sljitNativeARM_32.c

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/*
 *    Stack-less Just-In-Time compiler
 *
 *    Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright notice, this list of
 *      conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright notice, this list
 *      of conditions and the following disclaimer in the documentation and/or other materials
 *      provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifdef __SOFTFP__
#define ARM_ABI_INFO " ABI:softfp"
#else
#define ARM_ABI_INFO " ABI:hardfp"
#endif
 
SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void)
{
#if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
    return "ARMv7" SLJIT_CPUINFO ARM_ABI_INFO;
#elif (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    return "ARMv6" SLJIT_CPUINFO ARM_ABI_INFO;
#else
#error "Internal error: Unknown ARM architecture"
#endif
}
 
/* Length of an instruction word. */
typedef sljit_u32 sljit_ins;
 
/* Last register + 1. */
#define TMP_REG1    (SLJIT_NUMBER_OF_REGISTERS + 2)
#define TMP_REG2    (SLJIT_NUMBER_OF_REGISTERS + 3)
#define TMP_PC      (SLJIT_NUMBER_OF_REGISTERS + 4)
 
#define TMP_FREG1   (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1)
#define TMP_FREG2   (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2)
 
/* In ARM instruction words.
   Cache lines are usually 32 byte aligned. */
#define CONST_POOL_ALIGNMENT    8
#define CONST_POOL_EMPTY    0xffffffff
 
#define ALIGN_INSTRUCTION(ptr) \
    (sljit_ins*)(((sljit_ins)(ptr) + (CONST_POOL_ALIGNMENT * sizeof(sljit_ins)) - 1) & ~((CONST_POOL_ALIGNMENT * sizeof(sljit_ins)) - 1))
#define MAX_DIFFERENCE(max_diff) \
    (((max_diff) / (sljit_s32)sizeof(sljit_ins)) - (CONST_POOL_ALIGNMENT - 1))
 
/* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */
static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = {
    0, 0, 1, 2, 3, 11, 10, 9, 8, 7, 6, 5, 4, 13, 12, 14, 15
};
 
static const sljit_u8 freg_map[((SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2) << 1) + 1] = {
    0,
    0, 1, 2, 3, 4, 5, 15, 14, 13, 12, 11, 10, 9, 8,
    7, 6,
    0, 1, 2, 3, 4, 5, 15, 14, 13, 12, 11, 10, 9, 8,
    7, 6
};
 
static const sljit_u8 freg_ebit_map[((SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2) << 1) + 1] = {
    0,
    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    0, 0,
    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
    1, 1
};
 
#define RM(rm) ((sljit_ins)reg_map[rm])
#define RM8(rm) ((sljit_ins)reg_map[rm] << 8)
#define RD(rd) ((sljit_ins)reg_map[rd] << 12)
#define RN(rn) ((sljit_ins)reg_map[rn] << 16)
 
#define VM(vm) (((sljit_ins)freg_map[vm]) | ((sljit_ins)freg_ebit_map[vm] << 5))
#define VD(vd) (((sljit_ins)freg_map[vd] << 12) | ((sljit_ins)freg_ebit_map[vd] << 22))
#define VN(vn) (((sljit_ins)freg_map[vn] << 16) | ((sljit_ins)freg_ebit_map[vn] << 7))
 
/* --------------------------------------------------------------------- */
/*  Instrucion forms                                                     */
/* --------------------------------------------------------------------- */
 
/* The instruction includes the AL condition.
   INST_NAME - CONDITIONAL remove this flag. */
#define COND_MASK   0xf0000000
#define CONDITIONAL 0xe0000000
#define PUSH_POOL   0xff000000
 
#define ADC     0xe0a00000
#define ADD     0xe0800000
#define AND     0xe0000000
#define B       0xea000000
#define BIC     0xe1c00000
#define BKPT        0xe1200070
#define BL      0xeb000000
#define BLX     0xe12fff30
#define BX      0xe12fff10
#define CLZ     0xe16f0f10
#define CMN     0xe1600000
#define CMP     0xe1400000
#define EOR     0xe0200000
#define LDR     0xe5100000
#define LDR_POST    0xe4100000
#define LDREX       0xe1900f9f
#define LDREXB      0xe1d00f9f
#define LDREXH      0xe1f00f9f
#define MLA     0xe0200090
#define MOV     0xe1a00000
#define MUL     0xe0000090
#define MVN     0xe1e00000
#define NOP     0xe1a00000
#define ORR     0xe1800000
#define PUSH        0xe92d0000
#define POP     0xe8bd0000
#define REV     0xe6bf0f30
#define REV16       0xe6bf0fb0
#define RSB     0xe0600000
#define RSC     0xe0e00000
#define SBC     0xe0c00000
#define SMULL       0xe0c00090
#define STR     0xe5000000
#define STREX       0xe1800f90
#define STREXB      0xe1c00f90
#define STREXH      0xe1e00f90
#define SUB     0xe0400000
#define SXTB        0xe6af0070
#define SXTH        0xe6bf0070
#define TST     0xe1000000
#define UMULL       0xe0800090
#define UXTB        0xe6ef0070
#define UXTH        0xe6ff0070
#define VABS_F32    0xeeb00ac0
#define VADD_F32    0xee300a00
#define VAND        0xf2000110
#define VCMP_F32    0xeeb40a40
#define VCVT_F32_S32    0xeeb80ac0
#define VCVT_F32_U32    0xeeb80a40
#define VCVT_F64_F32    0xeeb70ac0
#define VCVT_S32_F32    0xeebd0ac0
#define VDIV_F32    0xee800a00
#define VDUP        0xee800b10
#define VDUP_s      0xf3b00c00
#define VEOR        0xf3000110
#define VLD1        0xf4200000
#define VLD1_r      0xf4a00c00
#define VLD1_s      0xf4a00000
#define VLDR_F32    0xed100a00
#define VMOV_F32    0xeeb00a40
#define VMOV        0xee000a10
#define VMOV2       0xec400a10
#define VMOV_i      0xf2800010
#define VMOV_s      0xee000b10
#define VMOVN       0xf3b20200
#define VMRS        0xeef1fa10
#define VMUL_F32    0xee200a00
#define VNEG_F32    0xeeb10a40
#define VORR        0xf2200110
#define VPOP        0xecbd0b00
#define VPUSH       0xed2d0b00
#define VSHLL       0xf2800a10
#define VSHR        0xf2800010
#define VSRA        0xf2800110
#define VST1        0xf4000000
#define VST1_s      0xf4800000
#define VSTR_F32    0xed000a00
#define VSUB_F32    0xee300a40
 
#if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
/* Arm v7 specific instructions. */
#define MOVT        0xe3400000
#define MOVW        0xe3000000
#define RBIT        0xe6ff0f30
#endif
 
#if (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
 
static sljit_s32 function_check_is_freg(struct sljit_compiler *compiler, sljit_s32 fr, sljit_s32 is_32)
{
    if (compiler->scratches == -1)
        return 0;
 
    if (is_32 && fr >= SLJIT_F64_SECOND(SLJIT_FR0))
        fr -= SLJIT_F64_SECOND(0);
 
    return (fr >= SLJIT_FR0 && fr < (SLJIT_FR0 + compiler->fscratches))
        || (fr > (SLJIT_FS0 - compiler->fsaveds) && fr <= SLJIT_FS0)
        || (fr >= SLJIT_TMP_FREGISTER_BASE && fr < (SLJIT_TMP_FREGISTER_BASE + SLJIT_NUMBER_OF_TEMPORARY_FLOAT_REGISTERS));
}
 
#endif /* SLJIT_ARGUMENT_CHECKS */
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
 
static sljit_s32 push_cpool(struct sljit_compiler *compiler)
{
    /* Pushing the constant pool into the instruction stream. */
    sljit_ins* inst;
    sljit_uw* cpool_ptr;
    sljit_uw* cpool_end;
    sljit_s32 i;
 
    /* The label could point the address after the constant pool. */
    if (compiler->last_label && compiler->last_label->size == compiler->size)
        compiler->last_label->size += compiler->cpool_fill + (CONST_POOL_ALIGNMENT - 1) + 1;
 
    SLJIT_ASSERT(compiler->cpool_fill > 0 && compiler->cpool_fill <= CPOOL_SIZE);
    inst = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
    FAIL_IF(!inst);
    compiler->size++;
    *inst = 0xff000000 | compiler->cpool_fill;
 
    for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) {
        inst = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
        FAIL_IF(!inst);
        compiler->size++;
        *inst = 0;
    }
 
    cpool_ptr = compiler->cpool;
    cpool_end = cpool_ptr + compiler->cpool_fill;
    while (cpool_ptr < cpool_end) {
        inst = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
        FAIL_IF(!inst);
        compiler->size++;
        *inst = *cpool_ptr++;
    }
    compiler->cpool_diff = CONST_POOL_EMPTY;
    compiler->cpool_fill = 0;
    return SLJIT_SUCCESS;
}
 
static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins inst)
{
    sljit_ins* ptr;
 
    if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
        FAIL_IF(push_cpool(compiler));
 
    ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
    FAIL_IF(!ptr);
    compiler->size++;
    *ptr = inst;
    return SLJIT_SUCCESS;
}
 
static sljit_s32 push_inst_with_literal(struct sljit_compiler *compiler, sljit_ins inst, sljit_uw literal)
{
    sljit_ins* ptr;
    sljit_uw cpool_index = CPOOL_SIZE;
    sljit_uw* cpool_ptr;
    sljit_uw* cpool_end;
    sljit_u8* cpool_unique_ptr;
 
    if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)))
        FAIL_IF(push_cpool(compiler));
    else if (compiler->cpool_fill > 0) {
        cpool_ptr = compiler->cpool;
        cpool_end = cpool_ptr + compiler->cpool_fill;
        cpool_unique_ptr = compiler->cpool_unique;
        do {
            if ((*cpool_ptr == literal) && !(*cpool_unique_ptr)) {
                cpool_index = (sljit_uw)(cpool_ptr - compiler->cpool);
                break;
            }
            cpool_ptr++;
            cpool_unique_ptr++;
        } while (cpool_ptr < cpool_end);
    }
 
    if (cpool_index == CPOOL_SIZE) {
        /* Must allocate a new entry in the literal pool. */
        if (compiler->cpool_fill < CPOOL_SIZE) {
            cpool_index = compiler->cpool_fill;
            compiler->cpool_fill++;
        }
        else {
            FAIL_IF(push_cpool(compiler));
            cpool_index = 0;
            compiler->cpool_fill = 1;
        }
    }
 
    SLJIT_ASSERT((inst & 0xfff) == 0);
    ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
    FAIL_IF(!ptr);
    compiler->size++;
    *ptr = inst | cpool_index;
 
    compiler->cpool[cpool_index] = literal;
    compiler->cpool_unique[cpool_index] = 0;
    if (compiler->cpool_diff == CONST_POOL_EMPTY)
        compiler->cpool_diff = compiler->size;
    return SLJIT_SUCCESS;
}
 
static sljit_s32 push_inst_with_unique_literal(struct sljit_compiler *compiler, sljit_ins inst, sljit_uw literal)
{
    sljit_ins* ptr;
 
    if (SLJIT_UNLIKELY((compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)) || compiler->cpool_fill >= CPOOL_SIZE))
        FAIL_IF(push_cpool(compiler));
 
    SLJIT_ASSERT(compiler->cpool_fill < CPOOL_SIZE && (inst & 0xfff) == 0);
    ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
    FAIL_IF(!ptr);
    compiler->size++;
    *ptr = inst | compiler->cpool_fill;
 
    compiler->cpool[compiler->cpool_fill] = literal;
    compiler->cpool_unique[compiler->cpool_fill] = 1;
    compiler->cpool_fill++;
    if (compiler->cpool_diff == CONST_POOL_EMPTY)
        compiler->cpool_diff = compiler->size;
    return SLJIT_SUCCESS;
}
 
static SLJIT_INLINE sljit_s32 prepare_blx(struct sljit_compiler *compiler)
{
    /* Place for at least two instruction (doesn't matter whether the first has a literal). */
    if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4088)))
        return push_cpool(compiler);
    return SLJIT_SUCCESS;
}
 
static SLJIT_INLINE sljit_s32 emit_blx(struct sljit_compiler *compiler)
{
    /* Must follow tightly the previous instruction (to be able to convert it to bl instruction). */
    SLJIT_ASSERT(compiler->cpool_diff == CONST_POOL_EMPTY || compiler->size - compiler->cpool_diff < MAX_DIFFERENCE(4092));
    SLJIT_ASSERT(reg_map[TMP_REG1] != 14);
 
    return push_inst(compiler, BLX | RM(TMP_REG1));
}
 
static sljit_uw patch_pc_relative_loads(sljit_uw *last_pc_patch, sljit_uw *code_ptr, sljit_uw* const_pool, sljit_uw cpool_size)
{
    sljit_uw diff;
    sljit_uw ind;
    sljit_uw counter = 0;
    sljit_uw* clear_const_pool = const_pool;
    sljit_uw* clear_const_pool_end = const_pool + cpool_size;
 
    SLJIT_ASSERT(const_pool - code_ptr <= CONST_POOL_ALIGNMENT);
    /* Set unused flag for all literals in the constant pool.
       I.e.: unused literals can belong to branches, which can be encoded as B or BL.
       We can "compress" the constant pool by discarding these literals. */
    while (clear_const_pool < clear_const_pool_end)
        *clear_const_pool++ = (sljit_uw)(-1);
 
    while (last_pc_patch < code_ptr) {
        /* Data transfer instruction with Rn == r15. */
        if ((*last_pc_patch & 0x0e0f0000) == 0x040f0000) {
            diff = (sljit_uw)(const_pool - last_pc_patch);
            ind = (*last_pc_patch) & 0xfff;
 
            /* Must be a load instruction with immediate offset. */
            SLJIT_ASSERT(ind < cpool_size && !(*last_pc_patch & (1 << 25)) && (*last_pc_patch & (1 << 20)));
            if ((sljit_s32)const_pool[ind] < 0) {
                const_pool[ind] = counter;
                ind = counter;
                counter++;
            }
            else
                ind = const_pool[ind];
 
            SLJIT_ASSERT(diff >= 1);
            if (diff >= 2 || ind > 0) {
                diff = (diff + (sljit_uw)ind - 2) << 2;
                SLJIT_ASSERT(diff <= 0xfff);
                *last_pc_patch = (*last_pc_patch & ~(sljit_uw)0xfff) | diff;
            }
            else
                *last_pc_patch = (*last_pc_patch & ~(sljit_uw)(0xfff | (1 << 23))) | 0x004;
        }
        last_pc_patch++;
    }
    return counter;
}
 
/* In some rare ocasions we may need future patches. The probability is close to 0 in practice. */
struct future_patch {
    struct future_patch* next;
    sljit_s32 index;
    sljit_s32 value;
};
 
static sljit_s32 resolve_const_pool_index(struct sljit_compiler *compiler, struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr)
{
    sljit_u32 value;
    struct future_patch *curr_patch, *prev_patch;
 
    SLJIT_UNUSED_ARG(compiler);
 
    /* Using the values generated by patch_pc_relative_loads. */
    if (!*first_patch)
        value = cpool_start_address[cpool_current_index];
    else {
        curr_patch = *first_patch;
        prev_patch = NULL;
        while (1) {
            if (!curr_patch) {
                value = cpool_start_address[cpool_current_index];
                break;
            }
            if ((sljit_uw)curr_patch->index == cpool_current_index) {
                value = (sljit_uw)curr_patch->value;
                if (prev_patch)
                    prev_patch->next = curr_patch->next;
                else
                    *first_patch = curr_patch->next;
                SLJIT_FREE(curr_patch, compiler->allocator_data);
                break;
            }
            prev_patch = curr_patch;
            curr_patch = curr_patch->next;
        }
    }
 
    if ((sljit_sw)value >= 0) {
        if (value > cpool_current_index) {
            curr_patch = (struct future_patch*)SLJIT_MALLOC(sizeof(struct future_patch), compiler->allocator_data);
            if (!curr_patch) {
                while (*first_patch) {
                    curr_patch = *first_patch;
                    *first_patch = (*first_patch)->next;
                    SLJIT_FREE(curr_patch, compiler->allocator_data);
                }
                return SLJIT_ERR_ALLOC_FAILED;
            }
            curr_patch->next = *first_patch;
            curr_patch->index = (sljit_sw)value;
            curr_patch->value = (sljit_sw)cpool_start_address[value];
            *first_patch = curr_patch;
        }
        cpool_start_address[value] = *buf_ptr;
    }
    return SLJIT_SUCCESS;
}
 
#else
 
static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins inst)
{
    sljit_ins* ptr;
 
    ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins));
    FAIL_IF(!ptr);
    compiler->size++;
    *ptr = inst;
    return SLJIT_SUCCESS;
}
 
static SLJIT_INLINE sljit_s32 emit_imm(struct sljit_compiler *compiler, sljit_s32 reg, sljit_sw imm)
{
    FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | ((sljit_u32)imm & 0xfff)));
    return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | (((sljit_u32)imm >> 16) & 0xfff));
}
 
#endif
 
static SLJIT_INLINE sljit_s32 detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code, sljit_sw executable_offset)
{
    sljit_sw diff;
 
    if (jump->flags & SLJIT_REWRITABLE_JUMP)
        return 0;
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    if (jump->flags & IS_BL)
        code_ptr--;
#endif /* SLJIT_CONFIG_ARM_V6 */
 
    if (jump->flags & JUMP_ADDR)
        diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2) - executable_offset);
    else {
        SLJIT_ASSERT(jump->u.label != NULL);
        diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2));
    }
 
    /* Branch to Thumb code has not been optimized yet. */
    if (diff & 0x3)
        return 0;
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    if (jump->flags & IS_BL) {
        if (diff <= 0x01ffffff && diff >= -0x02000000) {
            *code_ptr = (BL - CONDITIONAL) | (*(code_ptr + 1) & COND_MASK);
            jump->flags |= PATCH_B;
            return 1;
        }
    }
    else {
        if (diff <= 0x01ffffff && diff >= -0x02000000) {
            *code_ptr = (B - CONDITIONAL) | (*code_ptr & COND_MASK);
            jump->flags |= PATCH_B;
        }
    }
#else /* !SLJIT_CONFIG_ARM_V6 */
    if (diff <= 0x01ffffff && diff >= -0x02000000) {
        *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (*code_ptr & COND_MASK);
        jump->flags |= PATCH_B;
        return 1;
    }
#endif /* SLJIT_CONFIG_ARM_V6 */
    return 0;
}
 
static void set_jump_addr(sljit_uw jump_ptr, sljit_sw executable_offset, sljit_uw new_addr, sljit_s32 flush_cache)
{
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    sljit_ins *ptr = (sljit_ins*)jump_ptr;
    sljit_ins *inst = (sljit_ins*)ptr[0];
    sljit_ins mov_pc = ptr[1];
    sljit_s32 bl = (mov_pc & 0x0000f000) != RD(TMP_PC);
    sljit_sw diff = (sljit_sw)(((sljit_sw)new_addr - (sljit_sw)(inst + 2) - executable_offset) >> 2);
 
    SLJIT_UNUSED_ARG(executable_offset);
 
    if (diff <= 0x7fffff && diff >= -0x800000) {
        /* Turn to branch. */
        if (!bl) {
            if (flush_cache) {
                SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0);
            }
            inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff);
            if (flush_cache) {
                SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
                inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
                SLJIT_CACHE_FLUSH(inst, inst + 1);
            }
        } else {
            if (flush_cache) {
                SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0);
            }
            inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff);
            inst[1] = NOP;
            if (flush_cache) {
                SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
                inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
                SLJIT_CACHE_FLUSH(inst, inst + 2);
            }
        }
    } else {
        /* Get the position of the constant. */
        if (mov_pc & (1 << 23))
            ptr = inst + ((mov_pc & 0xfff) >> 2) + 2;
        else
            ptr = inst + 1;
 
        if (*inst != mov_pc) {
            if (flush_cache) {
                SLJIT_UPDATE_WX_FLAGS(inst, inst + (!bl ? 1 : 2), 0);
            }
            inst[0] = mov_pc;
            if (!bl) {
                if (flush_cache) {
                    SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
                    inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
                    SLJIT_CACHE_FLUSH(inst, inst + 1);
                }
            } else {
                inst[1] = BLX | RM(TMP_REG1);
                if (flush_cache) {
                    SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
                    inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
                    SLJIT_CACHE_FLUSH(inst, inst + 2);
                }
            }
        }
 
        if (flush_cache) {
            SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 0);
        }
 
        *ptr = new_addr;
 
        if (flush_cache) {
            SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 1);
        }
    }
#else /* !SLJIT_CONFIG_ARM_V6 */
    sljit_ins *inst = (sljit_ins*)jump_ptr;
 
    SLJIT_UNUSED_ARG(executable_offset);
 
    SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
 
    if (flush_cache) {
        SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0);
    }
 
    inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff);
    inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff);
 
    if (flush_cache) {
        SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
        inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
        SLJIT_CACHE_FLUSH(inst, inst + 2);
    }
#endif /* SLJIT_CONFIG_ARM_V6 */
}
 
static sljit_uw get_imm(sljit_uw imm);
static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg, sljit_uw imm);
static sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw, sljit_s32 tmp_reg);
 
static void set_const_value(sljit_uw addr, sljit_sw executable_offset, sljit_uw new_constant, sljit_s32 flush_cache)
{
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    sljit_ins *ptr = (sljit_ins*)addr;
    sljit_ins *inst = (sljit_ins*)ptr[0];
    sljit_uw ldr_literal = ptr[1];
    sljit_uw src2;
 
    SLJIT_UNUSED_ARG(executable_offset);
 
    src2 = get_imm(new_constant);
    if (src2) {
        if (flush_cache) {
            SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0);
        }
 
        *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2;
 
        if (flush_cache) {
            SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
            inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
            SLJIT_CACHE_FLUSH(inst, inst + 1);
        }
        return;
    }
 
    src2 = get_imm(~new_constant);
    if (src2) {
        if (flush_cache) {
            SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0);
        }
 
        *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2;
 
        if (flush_cache) {
            SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
            inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
            SLJIT_CACHE_FLUSH(inst, inst + 1);
        }
        return;
    }
 
    if (ldr_literal & (1 << 23))
        ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2;
    else
        ptr = inst + 1;
 
    if (*inst != ldr_literal) {
        if (flush_cache) {
            SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0);
        }
 
        *inst = ldr_literal;
 
        if (flush_cache) {
            SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1);
            inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
            SLJIT_CACHE_FLUSH(inst, inst + 1);
        }
    }
 
    if (flush_cache) {
        SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 0);
    }
 
    *ptr = new_constant;
 
    if (flush_cache) {
        SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 1);
    }
#else /* !SLJIT_CONFIG_ARM_V6 */
    sljit_ins *inst = (sljit_ins*)addr;
 
    SLJIT_UNUSED_ARG(executable_offset);
 
    SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT);
 
    if (flush_cache) {
        SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0);
    }
 
    inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff);
    inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff);
 
    if (flush_cache) {
        SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1);
        inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
        SLJIT_CACHE_FLUSH(inst, inst + 2);
    }
#endif /* SLJIT_CONFIG_ARM_V6 */
}
 
static SLJIT_INLINE sljit_sw mov_addr_get_length(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code, sljit_sw executable_offset)
{
    sljit_uw addr;
    sljit_sw diff;
    SLJIT_UNUSED_ARG(executable_offset);
 
    if (jump->flags & JUMP_ADDR)
        addr = jump->u.target;
    else
        addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code + jump->u.label->size, executable_offset);
 
    /* The pc+8 offset is represented by the 2 * SSIZE_OF(ins) below. */
    diff = (sljit_sw)addr - (sljit_sw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
 
    if ((diff & 0x3) == 0 && diff <= (0x3fc + 2 * SSIZE_OF(ins)) && diff >= (-0x3fc + 2 * SSIZE_OF(ins))) {
        jump->flags |= PATCH_B;
        return 0;
    }
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    return 0;
#else /* !SLJIT_CONFIG_ARM_V6 */
    return 1;
#endif /* SLJIT_CONFIG_ARM_V6 */
}
 
#if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
 
static void reduce_code_size(struct sljit_compiler *compiler)
{
    struct sljit_label *label;
    struct sljit_jump *jump;
    struct sljit_const *const_;
    SLJIT_NEXT_DEFINE_TYPES;
    sljit_uw total_size;
    sljit_uw size_reduce = 0;
    sljit_sw diff;
 
    label = compiler->labels;
    jump = compiler->jumps;
    const_ = compiler->consts;
    SLJIT_NEXT_INIT_TYPES();
 
    while (1) {
        SLJIT_GET_NEXT_MIN();
 
        if (next_min_addr == SLJIT_MAX_ADDRESS)
            break;
 
        if (next_min_addr == next_label_size) {
            label->size -= size_reduce;
 
            label = label->next;
            next_label_size = SLJIT_GET_NEXT_SIZE(label);
        }
 
        if (next_min_addr == next_const_addr) {
            const_->addr -= size_reduce;
            const_ = const_->next;
            next_const_addr = SLJIT_GET_NEXT_ADDRESS(const_);
            continue;
        }
 
        if (next_min_addr != next_jump_addr)
            continue;
 
        jump->addr -= size_reduce;
        if (!(jump->flags & JUMP_MOV_ADDR)) {
            total_size = JUMP_MAX_SIZE - 1;
 
            if (!(jump->flags & (SLJIT_REWRITABLE_JUMP | JUMP_ADDR))) {
                /* Unit size: instruction. */
                diff = (sljit_sw)jump->u.label->size - (sljit_sw)jump->addr - 2;
 
                if (diff <= (0x01ffffff / SSIZE_OF(ins)) && diff >= (-0x02000000 / SSIZE_OF(ins)))
                    total_size = 1 - 1;
            }
 
            size_reduce += JUMP_MAX_SIZE - 1 - total_size;
        } else {
            /* Real size minus 1. Unit size: instruction. */
            total_size = 1;
 
            if (!(jump->flags & JUMP_ADDR)) {
                diff = (sljit_sw)jump->u.label->size - (sljit_sw)jump->addr;
                if (diff <= 0xff + 2 && diff >= -0xff + 2)
                    total_size = 0;
            }
 
            size_reduce += 1 - total_size;
        }
 
        jump->flags |= total_size << JUMP_SIZE_SHIFT;
        jump = jump->next;
        next_jump_addr = SLJIT_GET_NEXT_ADDRESS(jump);
    }
 
    compiler->size -= size_reduce;
}
 
#endif /* SLJIT_CONFIG_ARM_V7 */
 
SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler, sljit_s32 options, void *exec_allocator_data)
{
    struct sljit_memory_fragment *buf;
    sljit_ins *code;
    sljit_ins *code_ptr;
    sljit_ins *buf_ptr;
    sljit_ins *buf_end;
    sljit_uw word_count;
    SLJIT_NEXT_DEFINE_TYPES;
    sljit_sw executable_offset;
    sljit_uw addr;
    sljit_sw diff;
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    sljit_uw cpool_size;
    sljit_uw cpool_skip_alignment;
    sljit_uw cpool_current_index;
    sljit_ins *cpool_start_address;
    sljit_ins *last_pc_patch;
    struct future_patch *first_patch;
#endif
 
    struct sljit_label *label;
    struct sljit_jump *jump;
    struct sljit_const *const_;
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_generate_code(compiler));
 
    /* Second code generation pass. */
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    compiler->size += (compiler->patches << 1);
    if (compiler->cpool_fill > 0)
        compiler->size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1;
#else /* !SLJIT_CONFIG_ARM_V6 */
    reduce_code_size(compiler);
#endif /* SLJIT_CONFIG_ARM_V6 */
    code = (sljit_ins*)allocate_executable_memory(compiler->size * sizeof(sljit_ins), options, exec_allocator_data, &executable_offset);
    PTR_FAIL_WITH_EXEC_IF(code);
 
    reverse_buf(compiler);
    buf = compiler->buf;
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    cpool_size = 0;
    cpool_skip_alignment = 0;
    cpool_current_index = 0;
    cpool_start_address = NULL;
    first_patch = NULL;
    last_pc_patch = code;
#endif /* SLJIT_CONFIG_ARM_V6 */
 
    code_ptr = code;
    word_count = 0;
    label = compiler->labels;
    jump = compiler->jumps;
    const_ = compiler->consts;
    SLJIT_NEXT_INIT_TYPES();
    SLJIT_GET_NEXT_MIN();
 
    do {
        buf_ptr = (sljit_ins*)buf->memory;
        buf_end = buf_ptr + (buf->used_size >> 2);
        do {
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
            if (cpool_size > 0) {
                if (cpool_skip_alignment > 0) {
                    buf_ptr++;
                    cpool_skip_alignment--;
                } else {
                    if (SLJIT_UNLIKELY(resolve_const_pool_index(compiler, &first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
                        SLJIT_FREE_EXEC(code, exec_allocator_data);
                        compiler->error = SLJIT_ERR_ALLOC_FAILED;
                        return NULL;
                    }
                    buf_ptr++;
                    if (++cpool_current_index >= cpool_size) {
                        SLJIT_ASSERT(!first_patch);
                        cpool_size = 0;
                    }
                }
            } else if ((*buf_ptr & 0xff000000) != PUSH_POOL) {
#endif /* SLJIT_CONFIG_ARM_V6 */
                *code_ptr = *buf_ptr++;
                if (next_min_addr == word_count) {
                    SLJIT_ASSERT(!label || label->size >= word_count);
                    SLJIT_ASSERT(!jump || jump->addr >= word_count);
                    SLJIT_ASSERT(!const_ || const_->addr >= word_count);
 
                    if (next_min_addr == next_label_size) {
                        label->u.addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
                        label->size = (sljit_uw)(code_ptr - code);
                        label = label->next;
                        next_label_size = SLJIT_GET_NEXT_SIZE(label);
                    }
 
                    /* These structures are ordered by their address. */
                    if (next_min_addr == next_jump_addr) {
                        if (!(jump->flags & JUMP_MOV_ADDR)) {
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
                            if (detect_jump_type(jump, code_ptr, code, executable_offset))
                                code_ptr--;
                            jump->addr = (sljit_uw)code_ptr;
#else /* !SLJIT_CONFIG_ARM_V6 */
                            word_count += jump->flags >> JUMP_SIZE_SHIFT;
                            jump->addr = (sljit_uw)code_ptr;
                            if (!detect_jump_type(jump, code_ptr, code, executable_offset)) {
                                code_ptr[2] = code_ptr[0];
                                addr = ((code_ptr[0] & 0xf) << 12);
                                code_ptr[0] = MOVW | addr;
                                code_ptr[1] = MOVT | addr;
                                code_ptr += 2;
                            }
                            SLJIT_ASSERT((sljit_uw)code_ptr - jump->addr <= (jump->flags >> JUMP_SIZE_SHIFT) * sizeof(sljit_ins));
#endif /* SLJIT_CONFIG_ARM_V6 */
                        } else {
#if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
                            word_count += jump->flags >> JUMP_SIZE_SHIFT;
#endif /* SLJIT_CONFIG_ARM_V7 */
                            addr = (sljit_uw)code_ptr;
                            code_ptr += mov_addr_get_length(jump, code_ptr, code, executable_offset);
                            jump->addr = addr;
                        }
                        jump = jump->next;
                        next_jump_addr = SLJIT_GET_NEXT_ADDRESS(jump);
                    } else if (next_min_addr == next_const_addr) {
                        const_->addr = (sljit_uw)code_ptr;
                        const_ = const_->next;
                        next_const_addr = SLJIT_GET_NEXT_ADDRESS(const_);
                    }
 
                    SLJIT_GET_NEXT_MIN();
                }
                code_ptr++;
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
            } else {
                /* Fortunately, no need to shift. */
                cpool_size = *buf_ptr++ & ~PUSH_POOL;
                SLJIT_ASSERT(cpool_size > 0);
                cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1);
                cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size);
                if (cpool_current_index > 0) {
                    /* Unconditional branch. */
                    *code_ptr = B | (((sljit_ins)(cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL);
                    code_ptr = (sljit_ins*)(cpool_start_address + cpool_current_index);
                }
                cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1;
                cpool_current_index = 0;
                last_pc_patch = code_ptr;
            }
#endif /* SLJIT_CONFIG_ARM_V6 */
            word_count++;
        } while (buf_ptr < buf_end);
        buf = buf->next;
    } while (buf);
 
    if (label && label->size == word_count) {
        label->u.addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
        label->size = (sljit_uw)(code_ptr - code);
        label = label->next;
    }
 
    SLJIT_ASSERT(!label);
    SLJIT_ASSERT(!jump);
    SLJIT_ASSERT(!const_);
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    SLJIT_ASSERT(cpool_size == 0);
    if (compiler->cpool_fill > 0) {
        cpool_start_address = ALIGN_INSTRUCTION(code_ptr);
        cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill);
        if (cpool_current_index > 0)
            code_ptr = (sljit_ins*)(cpool_start_address + cpool_current_index);
 
        buf_ptr = compiler->cpool;
        buf_end = buf_ptr + compiler->cpool_fill;
        cpool_current_index = 0;
        while (buf_ptr < buf_end) {
            if (SLJIT_UNLIKELY(resolve_const_pool_index(compiler, &first_patch, cpool_current_index, cpool_start_address, buf_ptr))) {
                SLJIT_FREE_EXEC(code, exec_allocator_data);
                compiler->error = SLJIT_ERR_ALLOC_FAILED;
                return NULL;
            }
            buf_ptr++;
            cpool_current_index++;
        }
        SLJIT_ASSERT(!first_patch);
    }
#endif
 
    jump = compiler->jumps;
    while (jump) {
        addr = (jump->flags & JUMP_ADDR) ? jump->u.target : jump->u.label->u.addr;
        buf_ptr = (sljit_ins*)jump->addr;
 
        if (jump->flags & JUMP_MOV_ADDR) {
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
            SLJIT_ASSERT((buf_ptr[0] & (sljit_ins)0xffff0000) == 0xe59f0000);
#else /* !SLJIT_CONFIG_ARM_V6 */
            SLJIT_ASSERT((buf_ptr[0] & ~(sljit_ins)0xf000) == 0);
#endif /* SLJIT_CONFIG_ARM_V6 */
 
            if (jump->flags & PATCH_B) {
                SLJIT_ASSERT((((sljit_sw)addr - (sljit_sw)SLJIT_ADD_EXEC_OFFSET(buf_ptr + 2, executable_offset)) & 0x3) == 0);
                diff = ((sljit_sw)addr - (sljit_sw)SLJIT_ADD_EXEC_OFFSET(buf_ptr + 2, executable_offset)) >> 2;
 
                SLJIT_ASSERT(diff <= 0xff && diff >= -0xff);
 
                addr = ADD;
                if (diff < 0) {
                    diff = -diff;
                    addr = SUB;
                }
 
                buf_ptr[0] = addr | (buf_ptr[0] & 0xf000) | RN(TMP_PC) | (1 << 25) | (0xf << 8) | (sljit_ins)(diff & 0xff);
            } else {
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
                buf_ptr[((buf_ptr[0] & 0xfff) >> 2) + 2] = addr;
#else /* !SLJIT_CONFIG_ARM_V6 */
                buf_ptr[1] = MOVT | buf_ptr[0] | ((addr >> 12) & 0xf0000) | ((addr >> 16) & 0xfff);
                buf_ptr[0] = MOVW | buf_ptr[0] | ((addr << 4) & 0xf0000) | (addr & 0xfff);
#endif /* SLJIT_CONFIG_ARM_V6 */
            }
        } else if (jump->flags & PATCH_B) {
            diff = (sljit_sw)addr - (sljit_sw)SLJIT_ADD_EXEC_OFFSET(buf_ptr + 2, executable_offset);
            SLJIT_ASSERT(diff <= 0x01ffffff && diff >= -0x02000000);
            *buf_ptr |= (diff >> 2) & 0x00ffffff;
        } else {
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
            if (jump->flags & IS_BL)
                buf_ptr--;
 
            if (jump->flags & SLJIT_REWRITABLE_JUMP) {
                jump->addr = (sljit_uw)code_ptr;
                code_ptr[0] = (sljit_ins)buf_ptr;
                code_ptr[1] = *buf_ptr;
                set_jump_addr((sljit_uw)code_ptr, executable_offset, addr, 0);
                code_ptr += 2;
            } else {
                if (*buf_ptr & (1 << 23))
                    buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
                else
                    buf_ptr += 1;
                *buf_ptr = addr;
            }
#else /* !SLJIT_CONFIG_ARM_V6 */
            set_jump_addr((sljit_uw)buf_ptr, executable_offset, addr, 0);
#endif /* SLJIT_CONFIG_ARM_V6 */
        }
 
        jump = jump->next;
    }
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    const_ = compiler->consts;
    while (const_) {
        buf_ptr = (sljit_ins*)const_->addr;
        const_->addr = (sljit_uw)code_ptr;
 
        code_ptr[0] = (sljit_ins)buf_ptr;
        code_ptr[1] = *buf_ptr;
        if (*buf_ptr & (1 << 23))
            buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2;
        else
            buf_ptr += 1;
        /* Set the value again (can be a simple constant). */
        set_const_value((sljit_uw)code_ptr, executable_offset, *buf_ptr, 0);
        code_ptr += 2;
 
        const_ = const_->next;
    }
#endif /* SLJIT_CONFIG_ARM_V6 */
 
    SLJIT_ASSERT(code_ptr - code <= (sljit_s32)compiler->size);
 
    compiler->error = SLJIT_ERR_COMPILED;
    compiler->executable_offset = executable_offset;
    compiler->executable_size = (sljit_uw)(code_ptr - code) * sizeof(sljit_uw);
 
    code = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(code, executable_offset);
    code_ptr = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
 
    SLJIT_CACHE_FLUSH(code, code_ptr);
    SLJIT_UPDATE_WX_FLAGS(code, code_ptr, 1);
    return code;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type)
{
    switch (feature_type) {
    case SLJIT_HAS_FPU:
    case SLJIT_HAS_F64_AS_F32_PAIR:
#ifdef SLJIT_IS_FPU_AVAILABLE
        return (SLJIT_IS_FPU_AVAILABLE) != 0;
#else
        /* Available by default. */
        return 1;
#endif /* SLJIT_IS_FPU_AVAILABLE */
    case SLJIT_HAS_SIMD:
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
        return 0;
#else
#ifdef SLJIT_IS_FPU_AVAILABLE
        return (SLJIT_IS_FPU_AVAILABLE) != 0;
#else
        /* Available by default. */
        return 1;
#endif /* SLJIT_IS_FPU_AVAILABLE */
#endif /* SLJIT_CONFIG_ARM_V6 */
 
    case SLJIT_SIMD_REGS_ARE_PAIRS:
    case SLJIT_HAS_CLZ:
    case SLJIT_HAS_ROT:
    case SLJIT_HAS_CMOV:
    case SLJIT_HAS_REV:
    case SLJIT_HAS_PREFETCH:
    case SLJIT_HAS_COPY_F32:
    case SLJIT_HAS_COPY_F64:
    case SLJIT_HAS_ATOMIC:
        return 1;
 
    case SLJIT_HAS_CTZ:
#if defined(SLJIT_CONFIG_ARM_V6) && SLJIT_CONFIG_ARM_V6
        return 2;
#else
        return 1;
#endif /* SLJIT_CONFIG_ARM_V6 */
 
    default:
        return 0;
    }
}
 
/* --------------------------------------------------------------------- */
/*  Entry, exit                                                          */
/* --------------------------------------------------------------------- */
 
/* Creates an index in data_transfer_insts array. */
#define WORD_SIZE   0x00
#define BYTE_SIZE   0x01
#define HALF_SIZE   0x02
#define PRELOAD     0x03
#define SIGNED      0x04
#define LOAD_DATA   0x08
 
/* Flag bits for emit_op. */
#define ALLOW_IMM       0x10
#define ALLOW_INV_IMM       0x20
#define ALLOW_ANY_IMM       (ALLOW_IMM | ALLOW_INV_IMM)
#define ALLOW_NEG_IMM       0x40
#define ALLOW_DOUBLE_IMM    0x80
 
/* s/l - store/load (1 bit)
   u/s - signed/unsigned (1 bit)
   w/b/h/N - word/byte/half/NOT allowed (2 bit)
   Storing signed and unsigned values are the same operations. */
 
static const sljit_ins data_transfer_insts[16] = {
/* s u w */ 0xe5000000 /* str */,
/* s u b */ 0xe5400000 /* strb */,
/* s u h */ 0xe10000b0 /* strh */,
/* s u N */ 0x00000000 /* not allowed */,
/* s s w */ 0xe5000000 /* str */,
/* s s b */ 0xe5400000 /* strb */,
/* s s h */ 0xe10000b0 /* strh */,
/* s s N */ 0x00000000 /* not allowed */,
 
/* l u w */ 0xe5100000 /* ldr */,
/* l u b */ 0xe5500000 /* ldrb */,
/* l u h */ 0xe11000b0 /* ldrh */,
/* l u p */ 0xf5500000 /* preload */,
/* l s w */ 0xe5100000 /* ldr */,
/* l s b */ 0xe11000d0 /* ldrsb */,
/* l s h */ 0xe11000f0 /* ldrsh */,
/* l s N */ 0x00000000 /* not allowed */,
};
 
#define EMIT_DATA_TRANSFER(type, add, target_reg, base_reg, arg) \
    (data_transfer_insts[(type) & 0xf] | ((add) << 23) | RD(target_reg) | RN(base_reg) | (sljit_ins)(arg))
 
/* Normal ldr/str instruction.
   Type2: ldrsb, ldrh, ldrsh */
#define IS_TYPE1_TRANSFER(type) \
    (data_transfer_insts[(type) & 0xf] & 0x04000000)
#define TYPE2_TRANSFER_IMM(imm) \
    (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22))
 
#define EMIT_FPU_OPERATION(opcode, mode, dst, src1, src2) \
    ((sljit_ins)(opcode) | (sljit_ins)(mode) | VD(dst) | VM(src1) | VN(src2))
 
/* Flags for emit_op: */
  /* Arguments are swapped. */
#define ARGS_SWAPPED    0x01
  /* Inverted immediate. */
#define INV_IMM     0x02
  /* Source and destination is register. */
#define REGISTER_OP 0x04
  /* Unused return value. */
#define UNUSED_RETURN   0x08
/* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */
#define SET_FLAGS   (1 << 20)
/* dst: reg
   src1: reg
   src2: reg or imm (if allowed)
   SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */
#define SRC2_IMM    (1 << 25)
 
static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 inp_flags,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w);
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler,
    sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds,
    sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
{
    sljit_uw imm, offset;
    sljit_s32 i, tmp, size, word_arg_count;
    sljit_s32 saved_arg_count = SLJIT_KEPT_SAVEDS_COUNT(options);
#ifdef __SOFTFP__
    sljit_u32 float_arg_count;
#else
    sljit_u32 old_offset, f32_offset;
    sljit_u32 remap[3];
    sljit_u32 *remap_ptr = remap;
#endif
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size));
    set_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size);
 
    imm = 0;
 
    tmp = SLJIT_S0 - saveds;
    for (i = SLJIT_S0 - saved_arg_count; i > tmp; i--)
        imm |= (sljit_uw)1 << reg_map[i];
 
    for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--)
        imm |= (sljit_uw)1 << reg_map[i];
 
    SLJIT_ASSERT(reg_map[TMP_REG2] == 14);
 
    /* Push saved and temporary registers
       multiple registers: stmdb sp!, {..., lr}
       single register: str reg, [sp, #-4]! */
    if (imm != 0)
        FAIL_IF(push_inst(compiler, PUSH | (1 << 14) | imm));
    else
        FAIL_IF(push_inst(compiler, 0xe52d0004 | RD(TMP_REG2)));
 
    /* Stack must be aligned to 8 bytes: */
    size = GET_SAVED_REGISTERS_SIZE(scratches, saveds - saved_arg_count, 1);
 
    if (fsaveds > 0 || fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG) {
        if ((size & SSIZE_OF(sw)) != 0) {
            FAIL_IF(push_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | sizeof(sljit_sw)));
            size += SSIZE_OF(sw);
        }
 
        if (fsaveds + fscratches >= SLJIT_NUMBER_OF_FLOAT_REGISTERS) {
            FAIL_IF(push_inst(compiler, VPUSH | VD(SLJIT_FS0) | ((sljit_ins)SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS << 1)));
        } else {
            if (fsaveds > 0)
                FAIL_IF(push_inst(compiler, VPUSH | VD(SLJIT_FS0) | ((sljit_ins)fsaveds << 1)));
            if (fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG)
                FAIL_IF(push_inst(compiler, VPUSH | VD(fscratches) | ((sljit_ins)(fscratches - (SLJIT_FIRST_SAVED_FLOAT_REG - 1)) << 1)));
        }
    }
 
    local_size = ((size + local_size + 0x7) & ~0x7) - size;
    compiler->local_size = local_size;
 
    if (options & SLJIT_ENTER_REG_ARG)
        arg_types = 0;
 
    arg_types >>= SLJIT_ARG_SHIFT;
    word_arg_count = 0;
    saved_arg_count = 0;
#ifdef __SOFTFP__
    SLJIT_COMPILE_ASSERT(SLJIT_FR0 == 1, float_register_index_start);
 
    offset = 0;
    float_arg_count = 0;
 
    while (arg_types) {
        switch (arg_types & SLJIT_ARG_MASK) {
        case SLJIT_ARG_TYPE_F64:
            if (offset & 0x7)
                offset += sizeof(sljit_sw);
 
            if (offset < 4 * sizeof(sljit_sw))
                FAIL_IF(push_inst(compiler, VMOV2 | (offset << 10) | ((offset + sizeof(sljit_sw)) << 14) | float_arg_count));
            else
                FAIL_IF(push_inst(compiler, VLDR_F32 | 0x800100 | RN(SLJIT_SP)
                        | (float_arg_count << 12) | ((offset + (sljit_ins)size - 4 * sizeof(sljit_sw)) >> 2)));
            float_arg_count++;
            offset += sizeof(sljit_f64) - sizeof(sljit_sw);
            break;
        case SLJIT_ARG_TYPE_F32:
            if (offset < 4 * sizeof(sljit_sw))
                FAIL_IF(push_inst(compiler, VMOV | (float_arg_count << 16) | (offset << 10)));
            else
                FAIL_IF(push_inst(compiler, VLDR_F32 | 0x800000 | RN(SLJIT_SP)
                        | (float_arg_count << 12) | ((offset + (sljit_ins)size - 4 * sizeof(sljit_sw)) >> 2)));
            float_arg_count++;
            break;
        default:
            word_arg_count++;
 
            if (!(arg_types & SLJIT_ARG_TYPE_SCRATCH_REG)) {
                tmp = SLJIT_S0 - saved_arg_count;
                saved_arg_count++;
            } else if (word_arg_count - 1 != (sljit_s32)(offset >> 2))
                tmp = word_arg_count;
            else
                break;
 
            if (offset < 4 * sizeof(sljit_sw))
                FAIL_IF(push_inst(compiler, MOV | RD(tmp) | (offset >> 2)));
            else
                FAIL_IF(push_inst(compiler, LDR | 0x800000 | RN(SLJIT_SP) | RD(tmp) | (offset + (sljit_ins)size - 4 * sizeof(sljit_sw))));
            break;
        }
 
        offset += sizeof(sljit_sw);
        arg_types >>= SLJIT_ARG_SHIFT;
    }
 
    compiler->args_size = offset;
#else
    offset = SLJIT_FR0;
    old_offset = SLJIT_FR0;
    f32_offset = 0;
 
    while (arg_types) {
        switch (arg_types & SLJIT_ARG_MASK) {
        case SLJIT_ARG_TYPE_F64:
            if (offset != old_offset)
                *remap_ptr++ = EMIT_FPU_OPERATION(VMOV_F32, SLJIT_32, offset, old_offset, 0);
            old_offset++;
            offset++;
            break;
        case SLJIT_ARG_TYPE_F32:
            if (f32_offset != 0) {
                *remap_ptr++ = EMIT_FPU_OPERATION(VMOV_F32, 0x20, offset, f32_offset, 0);
                f32_offset = 0;
            } else {
                if (offset != old_offset)
                    *remap_ptr++ = EMIT_FPU_OPERATION(VMOV_F32, 0, offset, old_offset, 0);
                f32_offset = old_offset;
                old_offset++;
            }
            offset++;
            break;
        default:
            if (!(arg_types & SLJIT_ARG_TYPE_SCRATCH_REG)) {
                FAIL_IF(push_inst(compiler, MOV | RD(SLJIT_S0 - saved_arg_count) | RM(SLJIT_R0 + word_arg_count)));
                saved_arg_count++;
            }
 
            word_arg_count++;
            break;
        }
        arg_types >>= SLJIT_ARG_SHIFT;
    }
 
    SLJIT_ASSERT((sljit_uw)(remap_ptr - remap) <= sizeof(remap));
 
    while (remap_ptr > remap)
        FAIL_IF(push_inst(compiler, *(--remap_ptr)));
#endif
 
    if (local_size > 0)
        FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM | ALLOW_DOUBLE_IMM, SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size));
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler,
    sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds,
    sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size)
{
    sljit_s32 size;
 
    CHECK_ERROR();
    CHECK(check_sljit_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size));
    set_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size);
 
    size = GET_SAVED_REGISTERS_SIZE(scratches, saveds - SLJIT_KEPT_SAVEDS_COUNT(options), 1);
 
    /* Doubles are saved, so alignment is unaffected. */
    if ((size & SSIZE_OF(sw)) != 0 && (fsaveds > 0 || fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG))
        size += SSIZE_OF(sw);
 
    compiler->local_size = ((size + local_size + 0x7) & ~0x7) - size;
    return SLJIT_SUCCESS;
}
 
static sljit_s32 emit_add_sp(struct sljit_compiler *compiler, sljit_uw imm)
{
    sljit_uw imm2 = get_imm(imm);
 
    if (imm2 == 0)
        return emit_op(compiler, SLJIT_ADD, ALLOW_IMM | ALLOW_DOUBLE_IMM, SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, (sljit_sw)imm);
 
    return push_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | imm2);
}
 
static sljit_s32 emit_stack_frame_release(struct sljit_compiler *compiler, sljit_s32 frame_size)
{
    sljit_s32 local_size, fscratches, fsaveds, i, tmp;
    sljit_s32 restored_reg = 0;
    sljit_s32 lr_dst = TMP_PC;
    sljit_uw reg_list = 0;
 
    SLJIT_ASSERT(reg_map[TMP_REG2] == 14 && frame_size <= 128);
 
    local_size = compiler->local_size;
    fscratches = compiler->fscratches;
    fsaveds = compiler->fsaveds;
 
    if (fsaveds > 0 || fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG) {
        if (local_size > 0)
            FAIL_IF(emit_add_sp(compiler, (sljit_uw)local_size));
 
        if (fsaveds + fscratches >= SLJIT_NUMBER_OF_FLOAT_REGISTERS) {
            FAIL_IF(push_inst(compiler, VPOP | VD(SLJIT_FS0) | ((sljit_ins)SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS << 1)));
        } else {
            if (fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG)
                FAIL_IF(push_inst(compiler, VPOP | VD(fscratches) | ((sljit_ins)(fscratches - (SLJIT_FIRST_SAVED_FLOAT_REG - 1)) << 1)));
            if (fsaveds > 0)
                FAIL_IF(push_inst(compiler, VPOP | VD(SLJIT_FS0) | ((sljit_ins)fsaveds << 1)));
        }
 
        local_size = GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 1) & 0x7;
    }
 
    if (frame_size < 0) {
        lr_dst = TMP_REG2;
        frame_size = 0;
    } else if (frame_size > 0) {
        SLJIT_ASSERT(frame_size == 1 || (frame_size & 0x7) == 0);
        lr_dst = 0;
        frame_size &= ~0x7;
    }
 
    if (lr_dst != 0)
        reg_list |= (sljit_uw)1 << reg_map[lr_dst];
 
    tmp = SLJIT_S0 - compiler->saveds;
    i = SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options);
    if (tmp < i) {
        restored_reg = i;
        do {
            reg_list |= (sljit_uw)1 << reg_map[i];
        } while (--i > tmp);
    }
 
    i = compiler->scratches;
    if (i >= SLJIT_FIRST_SAVED_REG) {
        restored_reg = i;
        do {
            reg_list |= (sljit_uw)1 << reg_map[i];
        } while (--i >= SLJIT_FIRST_SAVED_REG);
    }
 
    if (lr_dst == TMP_REG2 && reg_list == 0) {
        restored_reg = TMP_REG2;
        lr_dst = 0;
    }
 
    if (lr_dst == 0 && (reg_list & (reg_list - 1)) == 0) {
        /* The local_size does not include the saved registers. */
        tmp = 0;
        if (reg_list != 0) {
            tmp = 2;
            if (local_size <= 0xfff) {
                if (local_size == 0) {
                    SLJIT_ASSERT(restored_reg != TMP_REG2);
                    if (frame_size == 0)
                        return push_inst(compiler, LDR_POST | RN(SLJIT_SP) | RD(restored_reg) | 0x800008);
                    if (frame_size > 2 * SSIZE_OF(sw))
                        return push_inst(compiler, LDR_POST | RN(SLJIT_SP) | RD(restored_reg) | (sljit_ins)(frame_size - (2 * SSIZE_OF(sw))));
                }
 
                FAIL_IF(push_inst(compiler, LDR | 0x800000 | RN(SLJIT_SP) | RD(restored_reg) | (sljit_ins)local_size));
                tmp = 1;
            } else if (frame_size == 0) {
                frame_size = (restored_reg == TMP_REG2) ? SSIZE_OF(sw) : 2 * SSIZE_OF(sw);
                tmp = 3;
            }
 
            /* Place for the saved register. */
            if (restored_reg != TMP_REG2)
                local_size += SSIZE_OF(sw);
        }
 
        /* Place for the lr register. */
        local_size += SSIZE_OF(sw);
 
        if (frame_size > local_size)
            FAIL_IF(push_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | (1 << 25) | (sljit_ins)(frame_size - local_size)));
        else if (frame_size < local_size)
            FAIL_IF(emit_add_sp(compiler, (sljit_uw)(local_size - frame_size)));
 
        if (tmp <= 1)
            return SLJIT_SUCCESS;
 
        if (tmp == 2) {
            frame_size -= SSIZE_OF(sw);
            if (restored_reg != TMP_REG2)
                frame_size -= SSIZE_OF(sw);
 
            return push_inst(compiler, LDR | 0x800000 | RN(SLJIT_SP) | RD(restored_reg) | (sljit_ins)frame_size);
        }
 
        tmp = (restored_reg == TMP_REG2) ? 0x800004 : 0x800008;
        return push_inst(compiler, LDR_POST | RN(SLJIT_SP) | RD(restored_reg) | (sljit_ins)tmp);
    }
 
    if (local_size > 0)
        FAIL_IF(emit_add_sp(compiler, (sljit_uw)local_size));
 
    /* Pop saved and temporary registers
       multiple registers: ldmia sp!, {...}
       single register: ldr reg, [sp], #4 */
    if ((reg_list & (reg_list - 1)) == 0) {
        SLJIT_ASSERT(lr_dst != 0);
        SLJIT_ASSERT(reg_list == (sljit_uw)1 << reg_map[lr_dst]);
 
        return push_inst(compiler, LDR_POST | RN(SLJIT_SP) | RD(lr_dst) | 0x800004);
    }
 
    FAIL_IF(push_inst(compiler, POP | reg_list));
 
    if (frame_size > 0)
        return push_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | (1 << 25) | ((sljit_ins)frame_size - sizeof(sljit_sw)));
 
    if (lr_dst != 0)
        return SLJIT_SUCCESS;
 
    return push_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | (1 << 25) | sizeof(sljit_sw));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return_void(struct sljit_compiler *compiler)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_return_void(compiler));
 
    return emit_stack_frame_release(compiler, 0);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return_to(struct sljit_compiler *compiler,
    sljit_s32 src, sljit_sw srcw)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_return_to(compiler, src, srcw));
 
    if (src & SLJIT_MEM) {
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1));
        src = TMP_REG1;
        srcw = 0;
    } else if (src >= SLJIT_FIRST_SAVED_REG && src <= (SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options))) {
        FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | RM(src)));
        src = TMP_REG1;
        srcw = 0;
    }
 
    FAIL_IF(emit_stack_frame_release(compiler, 1));
 
    SLJIT_SKIP_CHECKS(compiler);
    return sljit_emit_ijump(compiler, SLJIT_JUMP, src, srcw);
}
 
/* --------------------------------------------------------------------- */
/*  Operators                                                            */
/* --------------------------------------------------------------------- */
 
static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags,
    sljit_uw dst, sljit_uw src1, sljit_uw src2)
{
    sljit_s32 reg, is_masked;
    sljit_uw shift_type;
 
    switch (op) {
    case SLJIT_MOV:
        SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
        if (dst != src2) {
            if (src2 & SRC2_IMM) {
                return push_inst(compiler, ((flags & INV_IMM) ? MVN : MOV) | RD(dst) | src2);
            }
            return push_inst(compiler, MOV | RD(dst) | RM(src2));
        }
        return SLJIT_SUCCESS;
 
    case SLJIT_MOV_U8:
    case SLJIT_MOV_S8:
        SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
        if (flags & REGISTER_OP)
            return push_inst(compiler, (op == SLJIT_MOV_U8 ? UXTB : SXTB) | RD(dst) | RM(src2));
 
        if (dst != src2) {
            SLJIT_ASSERT(src2 & SRC2_IMM);
            return push_inst(compiler, ((flags & INV_IMM) ? MVN : MOV) | RD(dst) | src2);
        }
        return SLJIT_SUCCESS;
 
    case SLJIT_MOV_U16:
    case SLJIT_MOV_S16:
        SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
        if (flags & REGISTER_OP)
            return push_inst(compiler, (op == SLJIT_MOV_U16 ? UXTH : SXTH) | RD(dst) | RM(src2));
 
        if (dst != src2) {
            SLJIT_ASSERT(src2 & SRC2_IMM);
            return push_inst(compiler, ((flags & INV_IMM) ? MVN : MOV) | RD(dst) | src2);
        }
        return SLJIT_SUCCESS;
 
    case SLJIT_CLZ:
        SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM));
        FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2)));
        return SLJIT_SUCCESS;
 
    case SLJIT_CTZ:
        SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM));
        SLJIT_ASSERT(src1 == TMP_REG1 && src2 != TMP_REG2 && !(flags & ARGS_SWAPPED));
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
        FAIL_IF(push_inst(compiler, RSB | SRC2_IMM | RD(TMP_REG2) | RN(src2) | 0));
        FAIL_IF(push_inst(compiler, AND | RD(TMP_REG1) | RN(src2) | RM(TMP_REG2)));
        FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(TMP_REG1)));
        FAIL_IF(push_inst(compiler, CMP | SET_FLAGS | SRC2_IMM | RN(dst) | 32));
        return push_inst(compiler, (EOR ^ 0xf0000000) | SRC2_IMM | RD(dst) | RN(dst) | 0x1f);
#else /* !SLJIT_CONFIG_ARM_V6 */
        FAIL_IF(push_inst(compiler, RBIT | RD(dst) | RM(src2)));
        return push_inst(compiler, CLZ | RD(dst) | RM(dst));
#endif /* SLJIT_CONFIG_ARM_V6 */
 
    case SLJIT_REV:
    case SLJIT_REV_U32:
    case SLJIT_REV_S32:
        SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
        return push_inst(compiler, REV | RD(dst) | RM(src2));
 
    case SLJIT_REV_U16:
    case SLJIT_REV_S16:
        SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED));
        FAIL_IF(push_inst(compiler, REV16 | RD(dst) | RM(src2)));
        if (!(flags & REGISTER_OP))
            return SLJIT_SUCCESS;
        return push_inst(compiler, (op == SLJIT_REV_U16 ? UXTH : SXTH) | RD(dst) | RM(dst));
    case SLJIT_ADD:
        SLJIT_ASSERT(!(flags & INV_IMM));
 
        if ((flags & (UNUSED_RETURN | ARGS_SWAPPED)) == UNUSED_RETURN)
            return push_inst(compiler, CMN | SET_FLAGS | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
        return push_inst(compiler, ADD | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
 
    case SLJIT_ADDC:
        SLJIT_ASSERT(!(flags & INV_IMM));
        return push_inst(compiler, ADC | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
 
    case SLJIT_SUB:
        SLJIT_ASSERT(!(flags & INV_IMM));
 
        if ((flags & (UNUSED_RETURN | ARGS_SWAPPED)) == UNUSED_RETURN)
            return push_inst(compiler, CMP | SET_FLAGS | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
 
        return push_inst(compiler, (!(flags & ARGS_SWAPPED) ? SUB : RSB) | (flags & SET_FLAGS)
            | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
 
    case SLJIT_SUBC:
        SLJIT_ASSERT(!(flags & INV_IMM));
        return push_inst(compiler, (!(flags & ARGS_SWAPPED) ? SBC : RSC) | (flags & SET_FLAGS)
            | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
 
    case SLJIT_MUL:
        SLJIT_ASSERT(!(flags & INV_IMM));
        SLJIT_ASSERT(!(src2 & SRC2_IMM));
        compiler->status_flags_state = 0;
 
        if (!(flags & SET_FLAGS))
            return push_inst(compiler, MUL | RN(dst) | RM8(src2) | RM(src1));
 
        reg = dst == TMP_REG1 ? TMP_REG2 : TMP_REG1;
        FAIL_IF(push_inst(compiler, SMULL | RN(reg) | RD(dst) | RM8(src2) | RM(src1)));
 
        /* cmp TMP_REG1, dst asr #31. */
        return push_inst(compiler, CMP | SET_FLAGS | RN(reg) | RM(dst) | 0xfc0);
 
    case SLJIT_AND:
        if ((flags & (UNUSED_RETURN | INV_IMM)) == UNUSED_RETURN)
            return push_inst(compiler, TST | SET_FLAGS | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
        return push_inst(compiler, (!(flags & INV_IMM) ? AND : BIC) | (flags & SET_FLAGS)
            | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
 
    case SLJIT_OR:
        SLJIT_ASSERT(!(flags & INV_IMM));
        return push_inst(compiler, ORR | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
 
    case SLJIT_XOR:
        if (flags & INV_IMM) {
            SLJIT_ASSERT(src2 == SRC2_IMM);
            return push_inst(compiler, MVN | (flags & SET_FLAGS) | RD(dst) | RM(src1));
        }
        return push_inst(compiler, EOR | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2)));
 
    case SLJIT_SHL:
    case SLJIT_MSHL:
        shift_type = 0;
        is_masked = op == SLJIT_MSHL;
        break;
 
    case SLJIT_LSHR:
    case SLJIT_MLSHR:
        shift_type = 1;
        is_masked = op == SLJIT_MLSHR;
        break;
 
    case SLJIT_ASHR:
    case SLJIT_MASHR:
        shift_type = 2;
        is_masked = op == SLJIT_MASHR;
        break;
 
    case SLJIT_ROTL:
        if (compiler->shift_imm == 0x20) {
            FAIL_IF(push_inst(compiler, RSB | SRC2_IMM | RD(TMP_REG2) | RN(src2) | 0));
            src2 = TMP_REG2;
        } else
            compiler->shift_imm = (sljit_uw)(-(sljit_sw)compiler->shift_imm) & 0x1f;
        /* fallthrough */
 
    case SLJIT_ROTR:
        shift_type = 3;
        is_masked = 0;
        break;
 
    case SLJIT_MULADD:
        return push_inst(compiler, MLA | RN(dst) | RD(dst) | RM8(src2) | RM(src1));
 
    default:
        SLJIT_UNREACHABLE();
        return SLJIT_SUCCESS;
    }
 
    SLJIT_ASSERT(!(flags & ARGS_SWAPPED) && !(flags & INV_IMM) && !(src2 & SRC2_IMM));
 
    if (compiler->shift_imm != 0x20) {
        SLJIT_ASSERT(src1 == TMP_REG1);
 
        if (compiler->shift_imm != 0)
            return push_inst(compiler, MOV | (flags & SET_FLAGS) |
                RD(dst) | (compiler->shift_imm << 7) | (shift_type << 5) | RM(src2));
        return push_inst(compiler, MOV | (flags & SET_FLAGS) | RD(dst) | RM(src2));
    }
 
    SLJIT_ASSERT(src1 != TMP_REG2);
 
    if (is_masked) {
        FAIL_IF(push_inst(compiler, AND | RD(TMP_REG2) | RN(src2) | SRC2_IMM | 0x1f));
        src2 = TMP_REG2;
    }
 
    return push_inst(compiler, MOV | (flags & SET_FLAGS) | RD(dst)
        | RM8(src2) | (sljit_ins)(shift_type << 5) | 0x10 | RM(src1));
}
 
#undef EMIT_SHIFT_INS_AND_RETURN
 
/* Tests whether the immediate can be stored in the 12 bit imm field.
   Returns with 0 if not possible. */
static sljit_uw get_imm(sljit_uw imm)
{
    sljit_u32 rol;
 
    if (imm <= 0xff)
        return SRC2_IMM | imm;
 
    if (!(imm & 0xff000000)) {
        imm <<= 8;
        rol = 8;
    } else {
        imm = (imm << 24) | (imm >> 8);
        rol = 0;
    }
 
    if (!(imm & 0xff000000)) {
        imm <<= 8;
        rol += 4;
    }
 
    if (!(imm & 0xf0000000)) {
        imm <<= 4;
        rol += 2;
    }
 
    if (!(imm & 0xc0000000)) {
        imm <<= 2;
        rol += 1;
    }
 
    if (!(imm & 0x00ffffff))
        return SRC2_IMM | (imm >> 24) | (rol << 8);
    return 0;
}
 
static sljit_uw compute_imm(sljit_uw imm, sljit_uw* imm2)
{
    sljit_uw mask;
    sljit_uw imm1;
    sljit_uw rol;
 
    /* Step1: Search a zero byte (8 continous zero bit). */
    mask = 0xff000000;
    rol = 8;
    while (1) {
        if (!(imm & mask)) {
            /* Rol imm by rol. */
            imm = (imm << rol) | (imm >> (32 - rol));
            /* Calculate arm rol. */
            rol = 4 + (rol >> 1);
            break;
        }
 
        rol += 2;
        mask >>= 2;
        if (mask & 0x3) {
            /* rol by 8. */
            imm = (imm << 8) | (imm >> 24);
            mask = 0xff00;
            rol = 24;
            while (1) {
                if (!(imm & mask)) {
                    /* Rol imm by rol. */
                    imm = (imm << rol) | (imm >> (32 - rol));
                    /* Calculate arm rol. */
                    rol = (rol >> 1) - 8;
                    break;
                }
                rol += 2;
                mask >>= 2;
                if (mask & 0x3)
                    return 0;
            }
            break;
        }
    }
 
    /* The low 8 bit must be zero. */
    SLJIT_ASSERT(!(imm & 0xff));
 
    if (!(imm & 0xff000000)) {
        imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8);
        *imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8);
    } else if (imm & 0xc0000000) {
        imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
        imm <<= 8;
        rol += 4;
 
        if (!(imm & 0xff000000)) {
            imm <<= 8;
            rol += 4;
        }
 
        if (!(imm & 0xf0000000)) {
            imm <<= 4;
            rol += 2;
        }
 
        if (!(imm & 0xc0000000)) {
            imm <<= 2;
            rol += 1;
        }
 
        if (!(imm & 0x00ffffff))
            *imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
        else
            return 0;
    } else {
        if (!(imm & 0xf0000000)) {
            imm <<= 4;
            rol += 2;
        }
 
        if (!(imm & 0xc0000000)) {
            imm <<= 2;
            rol += 1;
        }
 
        imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8);
        imm <<= 8;
        rol += 4;
 
        if (!(imm & 0xf0000000)) {
            imm <<= 4;
            rol += 2;
        }
 
        if (!(imm & 0xc0000000)) {
            imm <<= 2;
            rol += 1;
        }
 
        if (!(imm & 0x00ffffff))
            *imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8);
        else
            return 0;
    }
 
    return imm1;
}
 
static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg, sljit_uw imm)
{
    sljit_uw tmp;
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    sljit_uw imm1, imm2;
#else /* !SLJIT_CONFIG_ARM_V6 */
    if (!(imm & ~(sljit_uw)0xffff))
        return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff));
#endif /* SLJIT_CONFIG_ARM_V6 */
 
    /* Create imm by 1 inst. */
    tmp = get_imm(imm);
    if (tmp)
        return push_inst(compiler, MOV | RD(reg) | tmp);
 
    tmp = get_imm(~imm);
    if (tmp)
        return push_inst(compiler, MVN | RD(reg) | tmp);
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    /* Create imm by 2 inst. */
    imm1 = compute_imm(imm, &imm2);
    if (imm1 != 0) {
        FAIL_IF(push_inst(compiler, MOV | RD(reg) | imm1));
        return push_inst(compiler, ORR | RD(reg) | RN(reg) | imm2);
    }
 
    imm1 = compute_imm(~imm, &imm2);
    if (imm1 != 0) {
        FAIL_IF(push_inst(compiler, MVN | RD(reg) | imm1));
        return push_inst(compiler, BIC | RD(reg) | RN(reg) | imm2);
    }
 
    /* Load integer. */
    return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, reg, TMP_PC, 0), imm);
#else /* !SLJIT_CONFIG_ARM_V6 */
    FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)));
    if (imm <= 0xffff)
        return SLJIT_SUCCESS;
    return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff));
#endif /* SLJIT_CONFIG_ARM_V6 */
}
 
static sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg,
    sljit_s32 arg, sljit_sw argw, sljit_s32 tmp_reg)
{
    sljit_uw imm, offset_reg, tmp;
    sljit_sw mask = IS_TYPE1_TRANSFER(flags) ? 0xfff : 0xff;
    sljit_sw sign = IS_TYPE1_TRANSFER(flags) ? 0x1000 : 0x100;
 
    SLJIT_ASSERT(arg & SLJIT_MEM);
    SLJIT_ASSERT((arg & REG_MASK) != tmp_reg || (arg == SLJIT_MEM1(tmp_reg) && argw >= -mask && argw <= mask));
 
    if (SLJIT_UNLIKELY(!(arg & REG_MASK))) {
        tmp = (sljit_uw)(argw & (sign | mask));
        tmp = (sljit_uw)((argw + (tmp <= (sljit_uw)sign ? 0 : sign)) & ~mask);
 
        FAIL_IF(load_immediate(compiler, tmp_reg, tmp));
 
        argw -= (sljit_sw)tmp;
        tmp = 1;
 
        if (argw < 0) {
            argw = -argw;
            tmp = 0;
        }
 
        return push_inst(compiler, EMIT_DATA_TRANSFER(flags, tmp, reg, tmp_reg,
            (mask == 0xff) ? TYPE2_TRANSFER_IMM(argw) : argw));
    }
 
    if (arg & OFFS_REG_MASK) {
        offset_reg = OFFS_REG(arg);
        arg &= REG_MASK;
        argw &= 0x3;
 
        if (argw != 0 && (mask == 0xff)) {
            FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | RM(offset_reg) | ((sljit_ins)argw << 7)));
            return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, tmp_reg, TYPE2_TRANSFER_IMM(0)));
        }
 
        /* Bit 25: RM is offset. */
        return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg,
            RM(offset_reg) | (mask == 0xff ? 0 : (1 << 25)) | ((sljit_ins)argw << 7)));
    }
 
    arg &= REG_MASK;
 
    if (argw > mask) {
        tmp = (sljit_uw)(argw & (sign | mask));
        tmp = (sljit_uw)((argw + (tmp <= (sljit_uw)sign ? 0 : sign)) & ~mask);
        imm = get_imm(tmp);
 
        if (imm) {
            FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | imm));
            argw -= (sljit_sw)tmp;
            arg = tmp_reg;
 
            SLJIT_ASSERT(argw >= -mask && argw <= mask);
        }
    } else if (argw < -mask) {
        tmp = (sljit_uw)(-argw & (sign | mask));
        tmp = (sljit_uw)((-argw + (tmp <= (sljit_uw)sign ? 0 : sign)) & ~mask);
        imm = get_imm(tmp);
 
        if (imm) {
            FAIL_IF(push_inst(compiler, SUB | RD(tmp_reg) | RN(arg) | imm));
            argw += (sljit_sw)tmp;
            arg = tmp_reg;
 
            SLJIT_ASSERT(argw >= -mask && argw <= mask);
        }
    }
 
    if (argw <= mask && argw >= -mask) {
        if (argw >= 0) {
            if (mask == 0xff)
                argw = TYPE2_TRANSFER_IMM(argw);
            return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg, argw));
        }
 
        argw = -argw;
 
        if (mask == 0xff)
            argw = TYPE2_TRANSFER_IMM(argw);
 
        return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 0, reg, arg, argw));
    }
 
    FAIL_IF(load_immediate(compiler, tmp_reg, (sljit_uw)argw));
    return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg,
        RM(tmp_reg) | (mask == 0xff ? 0 : (1 << 25))));
}
 
static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 inp_flags,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    /* src1 is reg or TMP_REG1
       src2 is reg, TMP_REG2, or imm
       result goes to TMP_REG2, so put result can use TMP_REG1. */
 
    /* We prefers register and simple consts. */
    sljit_s32 dst_reg;
    sljit_s32 src1_reg = 0;
    sljit_s32 src2_reg = 0;
    sljit_s32 src2_tmp_reg = 0;
    sljit_s32 flags = HAS_FLAGS(op) ? SET_FLAGS : 0;
    sljit_s32 neg_op = 0;
    sljit_u32 imm2;
 
    op = GET_OPCODE(op);
 
    if (flags & SET_FLAGS)
        inp_flags &= ~ALLOW_DOUBLE_IMM;
 
    if (dst == TMP_REG1)
        flags |= UNUSED_RETURN;
 
    SLJIT_ASSERT(!(inp_flags & ALLOW_INV_IMM) || (inp_flags & ALLOW_IMM));
 
    if (inp_flags & ALLOW_NEG_IMM) {
        switch (op) {
        case SLJIT_ADD:
            compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD;
            neg_op = SLJIT_SUB;
            break;
        case SLJIT_ADDC:
            compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD;
            neg_op = SLJIT_SUBC;
            break;
        case SLJIT_SUB:
            compiler->status_flags_state = SLJIT_CURRENT_FLAGS_SUB;
            neg_op = SLJIT_ADD;
            break;
        case SLJIT_SUBC:
            compiler->status_flags_state = SLJIT_CURRENT_FLAGS_SUB;
            neg_op = SLJIT_ADDC;
            break;
        }
    }
 
    do {
        if (!(inp_flags & ALLOW_IMM))
            break;
 
        if (src2 == SLJIT_IMM) {
            src2_reg = (sljit_s32)get_imm((sljit_uw)src2w);
            if (src2_reg)
                break;
 
            if (inp_flags & ALLOW_INV_IMM) {
                src2_reg = (sljit_s32)get_imm(~(sljit_uw)src2w);
                if (src2_reg) {
                    flags |= INV_IMM;
                    break;
                }
            }
 
            if (neg_op != 0) {
                src2_reg = (sljit_s32)get_imm((neg_op == SLJIT_ADD || neg_op == SLJIT_SUB) ? (sljit_uw)-src2w : ~(sljit_uw)src2w);
                if (src2_reg) {
                    op = neg_op | GET_ALL_FLAGS(op);
                    break;
                }
            }
        }
 
        if (src1 == SLJIT_IMM) {
            src2_reg = (sljit_s32)get_imm((sljit_uw)src1w);
            if (src2_reg) {
                flags |= ARGS_SWAPPED;
                src1 = src2;
                src1w = src2w;
                break;
            }
 
            if (inp_flags & ALLOW_INV_IMM) {
                src2_reg = (sljit_s32)get_imm(~(sljit_uw)src1w);
                if (src2_reg) {
                    flags |= ARGS_SWAPPED | INV_IMM;
                    src1 = src2;
                    src1w = src2w;
                    break;
                }
            }
 
            if (neg_op >= SLJIT_SUB) {
                /* Note: additive operation (commutative). */
                SLJIT_ASSERT(op == SLJIT_ADD || op == SLJIT_ADDC);
 
                src2_reg = (sljit_s32)get_imm((sljit_uw)-src1w);
                if (src2_reg) {
                    src1 = src2;
                    src1w = src2w;
                    op = neg_op | GET_ALL_FLAGS(op);
                    break;
                }
            }
        }
    } while(0);
 
    /* Destination. */
    dst_reg = FAST_IS_REG(dst) ? dst : TMP_REG2;
 
    if (op <= SLJIT_MOV_P) {
        if (dst & SLJIT_MEM) {
            if (inp_flags & BYTE_SIZE)
                inp_flags &= ~SIGNED;
 
            if (FAST_IS_REG(src2))
                return emit_op_mem(compiler, inp_flags, src2, dst, dstw, TMP_REG1);
        }
 
        if (FAST_IS_REG(src2) && dst_reg != TMP_REG2)
            flags |= REGISTER_OP;
 
        src2_tmp_reg = dst_reg;
    } else {
        if (op == SLJIT_REV_U16 || op == SLJIT_REV_S16) {
            if (!(dst & SLJIT_MEM) && (!(src2 & SLJIT_MEM) || op == SLJIT_REV_S16))
                flags |= REGISTER_OP;
        }
 
        src2_tmp_reg = FAST_IS_REG(src1) ? TMP_REG1 : TMP_REG2;
    }
 
    if (src2_reg == 0 && (src2 & SLJIT_MEM)) {
        src2_reg = src2_tmp_reg;
        FAIL_IF(emit_op_mem(compiler, inp_flags | LOAD_DATA, src2_reg, src2, src2w, TMP_REG1));
    }
 
    /* Source 1. */
    if (FAST_IS_REG(src1))
        src1_reg = src1;
    else if (src1 & SLJIT_MEM) {
        FAIL_IF(emit_op_mem(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, TMP_REG1));
        src1_reg = TMP_REG1;
    } else if (!(inp_flags & ALLOW_DOUBLE_IMM) || src2_reg != 0 || op == SLJIT_SUB || op == SLJIT_SUBC) {
        FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)src1w));
        src1_reg = TMP_REG1;
    }
 
    /* Source 2. */
    if (src2_reg == 0) {
        src2_reg = src2_tmp_reg;
 
        if (FAST_IS_REG(src2))
            src2_reg = src2;
        else if (!(inp_flags & ALLOW_DOUBLE_IMM))
            FAIL_IF(load_immediate(compiler, src2_reg, (sljit_uw)src2w));
        else {
            SLJIT_ASSERT(!(flags & SET_FLAGS));
 
            if (src1_reg == 0) {
                FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)src1w));
                src1_reg = TMP_REG1;
            }
 
            src2_reg = (sljit_s32)compute_imm((sljit_uw)src2w, &imm2);
 
            if (src2_reg == 0 && neg_op != 0) {
                src2_reg = (sljit_s32)compute_imm((sljit_uw)-src2w, &imm2);
                if (src2_reg != 0)
                    op = neg_op;
            }
 
            if (src2_reg == 0) {
                FAIL_IF(load_immediate(compiler, src2_tmp_reg, (sljit_uw)src2w));
                src2_reg = src2_tmp_reg;
            } else {
                FAIL_IF(emit_single_op(compiler, op, flags, (sljit_uw)dst_reg, (sljit_uw)src1_reg, (sljit_uw)src2_reg));
                src1_reg = dst_reg;
                src2_reg = (sljit_s32)imm2;
 
                if (op == SLJIT_ADDC)
                    op = SLJIT_ADD;
                else if (op == SLJIT_SUBC)
                    op = SLJIT_SUB;
            }
        }
    }
 
    if (src1_reg == 0) {
        SLJIT_ASSERT((inp_flags & ALLOW_DOUBLE_IMM) && !(flags & SET_FLAGS));
 
        src1_reg = (sljit_s32)compute_imm((sljit_uw)src1w, &imm2);
 
        if (src1_reg == 0 && neg_op != 0) {
            src1_reg = (sljit_s32)compute_imm((sljit_uw)-src1w, &imm2);
            if (src1_reg != 0)
                op = neg_op;
        }
 
        if (src1_reg == 0) {
            FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)src1w));
            src1_reg = TMP_REG1;
        } else {
            FAIL_IF(emit_single_op(compiler, op, flags, (sljit_uw)dst_reg, (sljit_uw)src2_reg, (sljit_uw)src1_reg));
            src1_reg = dst_reg;
            src2_reg = (sljit_s32)imm2;
 
            if (op == SLJIT_ADDC)
                op = SLJIT_ADD;
        }
    }
 
    FAIL_IF(emit_single_op(compiler, op, flags, (sljit_uw)dst_reg, (sljit_uw)src1_reg, (sljit_uw)src2_reg));
 
    if (!(dst & SLJIT_MEM))
        return SLJIT_SUCCESS;
 
    return emit_op_mem(compiler, inp_flags, dst_reg, dst, dstw, TMP_REG1);
}
 
#ifdef __cplusplus
extern "C" {
#endif
 
#if defined(__GNUC__)
extern unsigned int __aeabi_uidivmod(unsigned int numerator, unsigned int denominator);
extern int __aeabi_idivmod(int numerator, int denominator);
#else
#error "Software divmod functions are needed"
#endif
 
#ifdef __cplusplus
}
#endif
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
{
    sljit_uw saved_reg_list[3];
    sljit_sw saved_reg_count;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op0(compiler, op));
 
    op = GET_OPCODE(op);
    switch (op) {
    case SLJIT_BREAKPOINT:
        FAIL_IF(push_inst(compiler, BKPT));
        break;
    case SLJIT_NOP:
        FAIL_IF(push_inst(compiler, NOP));
        break;
    case SLJIT_LMUL_UW:
    case SLJIT_LMUL_SW:
        return push_inst(compiler, (op == SLJIT_LMUL_UW ? UMULL : SMULL)
            | RN(SLJIT_R1) | RD(SLJIT_R0) | RM8(SLJIT_R0) | RM(SLJIT_R1));
    case SLJIT_DIVMOD_UW:
    case SLJIT_DIVMOD_SW:
    case SLJIT_DIV_UW:
    case SLJIT_DIV_SW:
        SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments);
        SLJIT_ASSERT(reg_map[2] == 1 && reg_map[3] == 2 && reg_map[4] == 3);
 
        saved_reg_count = 0;
        if (compiler->scratches >= 4)
            saved_reg_list[saved_reg_count++] = 3;
        if (compiler->scratches >= 3)
            saved_reg_list[saved_reg_count++] = 2;
        if (op >= SLJIT_DIV_UW)
            saved_reg_list[saved_reg_count++] = 1;
 
        if (saved_reg_count > 0) {
            FAIL_IF(push_inst(compiler, STR | 0x2d0000 | (saved_reg_count >= 3 ? 16 : 8)
                        | (saved_reg_list[0] << 12) /* str rX, [sp, #-8/-16]! */));
            if (saved_reg_count >= 2) {
                SLJIT_ASSERT(saved_reg_list[1] < 8);
                FAIL_IF(push_inst(compiler, STR | 0x8d0004 | (saved_reg_list[1] << 12) /* str rX, [sp, #4] */));
            }
            if (saved_reg_count >= 3) {
                SLJIT_ASSERT(saved_reg_list[2] < 8);
                FAIL_IF(push_inst(compiler, STR | 0x8d0008 | (saved_reg_list[2] << 12) /* str rX, [sp, #8] */));
            }
        }
 
#if defined(__GNUC__)
        FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
            ((op | 0x2) == SLJIT_DIV_UW ? SLJIT_FUNC_ADDR(__aeabi_uidivmod) : SLJIT_FUNC_ADDR(__aeabi_idivmod))));
#else
#error "Software divmod functions are needed"
#endif
 
        if (saved_reg_count > 0) {
            if (saved_reg_count >= 3) {
                SLJIT_ASSERT(saved_reg_list[2] < 8);
                FAIL_IF(push_inst(compiler, LDR | 0x8d0008 | (saved_reg_list[2] << 12) /* ldr rX, [sp, #8] */));
            }
            if (saved_reg_count >= 2) {
                SLJIT_ASSERT(saved_reg_list[1] < 8);
                FAIL_IF(push_inst(compiler, LDR | 0x8d0004 | (saved_reg_list[1] << 12) /* ldr rX, [sp, #4] */));
            }
            return push_inst(compiler, (LDR ^ (1 << 24)) | 0x8d0000 | (sljit_ins)(saved_reg_count >= 3 ? 16 : 8)
                        | (saved_reg_list[0] << 12) /* ldr rX, [sp], #8/16 */);
        }
        return SLJIT_SUCCESS;
    case SLJIT_ENDBR:
    case SLJIT_SKIP_FRAMES_BEFORE_RETURN:
        return SLJIT_SUCCESS;
    }
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
    ADJUST_LOCAL_OFFSET(dst, dstw);
    ADJUST_LOCAL_OFFSET(src, srcw);
 
    switch (GET_OPCODE(op)) {
    case SLJIT_MOV:
    case SLJIT_MOV_U32:
    case SLJIT_MOV_S32:
    case SLJIT_MOV32:
    case SLJIT_MOV_P:
        return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw);
 
    case SLJIT_MOV_U8:
        return emit_op(compiler, SLJIT_MOV_U8, ALLOW_ANY_IMM | BYTE_SIZE, dst, dstw, TMP_REG1, 0, src, (src == SLJIT_IMM) ? (sljit_u8)srcw : srcw);
 
    case SLJIT_MOV_S8:
        return emit_op(compiler, SLJIT_MOV_S8, ALLOW_ANY_IMM | SIGNED | BYTE_SIZE, dst, dstw, TMP_REG1, 0, src, (src == SLJIT_IMM) ? (sljit_s8)srcw : srcw);
 
    case SLJIT_MOV_U16:
        return emit_op(compiler, SLJIT_MOV_U16, ALLOW_ANY_IMM | HALF_SIZE, dst, dstw, TMP_REG1, 0, src, (src == SLJIT_IMM) ? (sljit_u16)srcw : srcw);
 
    case SLJIT_MOV_S16:
        return emit_op(compiler, SLJIT_MOV_S16, ALLOW_ANY_IMM | SIGNED | HALF_SIZE, dst, dstw, TMP_REG1, 0, src, (src == SLJIT_IMM) ? (sljit_s16)srcw : srcw);
 
    case SLJIT_CLZ:
    case SLJIT_CTZ:
    case SLJIT_REV:
    case SLJIT_REV_U32:
    case SLJIT_REV_S32:
        return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw);
 
    case SLJIT_REV_U16:
    case SLJIT_REV_S16:
        return emit_op(compiler, op, HALF_SIZE, dst, dstw, TMP_REG1, 0, src, srcw);
    }
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_s32 inp_flags;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op2(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w));
    ADJUST_LOCAL_OFFSET(dst, dstw);
    ADJUST_LOCAL_OFFSET(src1, src1w);
    ADJUST_LOCAL_OFFSET(src2, src2w);
 
    switch (GET_OPCODE(op)) {
    case SLJIT_ADD:
    case SLJIT_ADDC:
    case SLJIT_SUB:
    case SLJIT_SUBC:
        return emit_op(compiler, op, ALLOW_IMM | ALLOW_NEG_IMM | ALLOW_DOUBLE_IMM, dst, dstw, src1, src1w, src2, src2w);
 
    case SLJIT_OR:
        return emit_op(compiler, op, ALLOW_IMM | ALLOW_DOUBLE_IMM, dst, dstw, src1, src1w, src2, src2w);
 
    case SLJIT_XOR:
        inp_flags = ALLOW_IMM | ALLOW_DOUBLE_IMM;
        if ((src1 == SLJIT_IMM && src1w == -1) || (src2 == SLJIT_IMM && src2w == -1)) {
            inp_flags |= ALLOW_INV_IMM;
        }
        return emit_op(compiler, op, inp_flags, dst, dstw, src1, src1w, src2, src2w);
 
    case SLJIT_MUL:
        return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
 
    case SLJIT_AND:
        return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w);
 
    case SLJIT_SHL:
    case SLJIT_MSHL:
    case SLJIT_LSHR:
    case SLJIT_MLSHR:
    case SLJIT_ASHR:
    case SLJIT_MASHR:
    case SLJIT_ROTL:
    case SLJIT_ROTR:
        if (src2 == SLJIT_IMM) {
            compiler->shift_imm = src2w & 0x1f;
            return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w);
        } else {
            compiler->shift_imm = 0x20;
            return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w);
        }
    }
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2u(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_op2(compiler, op, 1, 0, 0, src1, src1w, src2, src2w));
 
    SLJIT_SKIP_CHECKS(compiler);
    return sljit_emit_op2(compiler, op, TMP_REG1, 0, src1, src1w, src2, src2w);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2r(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst_reg,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_op2r(compiler, op, dst_reg, src1, src1w, src2, src2w));
    ADJUST_LOCAL_OFFSET(src1, src1w);
    ADJUST_LOCAL_OFFSET(src2, src2w);
 
    switch (GET_OPCODE(op)) {
    case SLJIT_MULADD:
        return emit_op(compiler, op, 0, dst_reg, 0, src1, src1w, src2, src2w);
    }
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_shift_into(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst_reg,
    sljit_s32 src1_reg,
    sljit_s32 src2_reg,
    sljit_s32 src3, sljit_sw src3w)
{
    sljit_s32 is_left;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_shift_into(compiler, op, dst_reg, src1_reg, src2_reg, src3, src3w));
 
    op = GET_OPCODE(op);
    is_left = (op == SLJIT_SHL || op == SLJIT_MSHL);
 
    if (src1_reg == src2_reg) {
        SLJIT_SKIP_CHECKS(compiler);
        return sljit_emit_op2(compiler, is_left ? SLJIT_ROTL : SLJIT_ROTR, dst_reg, 0, src1_reg, 0, src3, src3w);
    }
 
    ADJUST_LOCAL_OFFSET(src3, src3w);
 
    /* Shift type of ROR is 3. */
    if (src3 == SLJIT_IMM) {
        src3w &= 0x1f;
 
        if (src3w == 0)
            return SLJIT_SUCCESS;
 
        FAIL_IF(push_inst(compiler, MOV | RD(dst_reg) | RM(src1_reg) | ((sljit_ins)(is_left ? 0 : 1) << 5) | ((sljit_ins)src3w << 7)));
        src3w = (src3w ^ 0x1f) + 1;
        return push_inst(compiler, ORR | RD(dst_reg) | RN(dst_reg) | RM(src2_reg) | ((sljit_ins)(is_left ? 1 : 0) << 5) | ((sljit_ins)src3w << 7));
    }
 
    if (src3 & SLJIT_MEM) {
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG2, src3, src3w, TMP_REG2));
        src3 = TMP_REG2;
    }
 
    if (op == SLJIT_MSHL || op == SLJIT_MLSHR || dst_reg == src3) {
        FAIL_IF(push_inst(compiler, AND | SRC2_IMM | RD(TMP_REG2) | RN(src3) | 0x1f));
        src3 = TMP_REG2;
    }
 
    FAIL_IF(push_inst(compiler, MOV | RD(dst_reg) | RM8(src3) | ((sljit_ins)(is_left ? 0 : 1) << 5) | 0x10 | RM(src1_reg)));
    FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | RM(src2_reg) | ((sljit_ins)(is_left ? 1 : 0) << 5) | (1 << 7)));
    FAIL_IF(push_inst(compiler, EOR | SRC2_IMM | RD(TMP_REG2) | RN(src3) | 0x1f));
    return push_inst(compiler, ORR | RD(dst_reg) | RN(dst_reg) | RM8(TMP_REG2) | ((sljit_ins)(is_left ? 1 : 0) << 5) | 0x10 | RM(TMP_REG1));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_src(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 src, sljit_sw srcw)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_op_src(compiler, op, src, srcw));
    ADJUST_LOCAL_OFFSET(src, srcw);
 
    switch (op) {
    case SLJIT_FAST_RETURN:
        SLJIT_ASSERT(reg_map[TMP_REG2] == 14);
 
        if (FAST_IS_REG(src))
            FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG2) | RM(src)));
        else
            FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG2, src, srcw, TMP_REG1));
 
        return push_inst(compiler, BX | RM(TMP_REG2));
    case SLJIT_SKIP_FRAMES_BEFORE_FAST_RETURN:
        return SLJIT_SUCCESS;
    case SLJIT_PREFETCH_L1:
    case SLJIT_PREFETCH_L2:
    case SLJIT_PREFETCH_L3:
    case SLJIT_PREFETCH_ONCE:
        SLJIT_ASSERT(src & SLJIT_MEM);
        return emit_op_mem(compiler, PRELOAD | LOAD_DATA, TMP_PC, src, srcw, TMP_REG1);
    }
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_dst(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw)
{
    sljit_s32 size, dst_r;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op_dst(compiler, op, dst, dstw));
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    switch (op) {
    case SLJIT_FAST_ENTER:
        SLJIT_ASSERT(reg_map[TMP_REG2] == 14);
 
        if (FAST_IS_REG(dst))
            return push_inst(compiler, MOV | RD(dst) | RM(TMP_REG2));
        break;
    case SLJIT_GET_RETURN_ADDRESS:
        size = GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds - SLJIT_KEPT_SAVEDS_COUNT(compiler->options), 0);
 
        if (compiler->fsaveds > 0 || compiler->fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG) {
            /* The size of pc is not added above. */
            if ((size & SSIZE_OF(sw)) == 0)
                size += SSIZE_OF(sw);
 
            size += GET_SAVED_FLOAT_REGISTERS_SIZE(compiler->fscratches, compiler->fsaveds, f64);
        }
 
        SLJIT_ASSERT(((compiler->local_size + size + SSIZE_OF(sw)) & 0x7) == 0);
 
        dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2;
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, dst_r, SLJIT_MEM1(SLJIT_SP), compiler->local_size + size, TMP_REG1));
        break;
    }
 
    if (dst & SLJIT_MEM)
        return emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1);
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 type, sljit_s32 reg)
{
    CHECK_REG_INDEX(check_sljit_get_register_index(type, reg));
 
    if (type == SLJIT_GP_REGISTER)
        return reg_map[reg];
 
    if (type == SLJIT_FLOAT_REGISTER || type == SLJIT_SIMD_REG_64)
        return freg_map[reg];
 
    if (type != SLJIT_SIMD_REG_128)
        return freg_map[reg] & ~0x1;
 
    return -1;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
    void *instruction, sljit_u32 size)
{
    SLJIT_UNUSED_ARG(size);
    CHECK_ERROR();
    CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
 
    return push_inst(compiler, *(sljit_ins*)instruction);
}
 
/* --------------------------------------------------------------------- */
/*  Floating point operators                                             */
/* --------------------------------------------------------------------- */
 
#define FPU_LOAD (1 << 20)
#define EMIT_FPU_DATA_TRANSFER(inst, add, base, freg, offs) \
    ((inst) | (sljit_ins)((add) << 23) | RN(base) | VD(freg) | (sljit_ins)(offs))
 
static sljit_s32 emit_fop_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw)
{
    sljit_uw imm;
    sljit_ins inst = VSTR_F32 | (flags & (SLJIT_32 | FPU_LOAD));
 
    SLJIT_ASSERT(arg & SLJIT_MEM);
    arg &= ~SLJIT_MEM;
 
    if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
        FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | (((sljit_ins)argw & 0x3) << 7)));
        arg = TMP_REG1;
        argw = 0;
    }
 
    /* Fast loads and stores. */
    if (arg) {
        if (!(argw & ~0x3fc))
            return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, arg & REG_MASK, reg, argw >> 2));
        if (!(-argw & ~0x3fc))
            return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, arg & REG_MASK, reg, (-argw) >> 2));
 
        imm = get_imm((sljit_uw)argw & ~(sljit_uw)0x3fc);
        if (imm) {
            FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg & REG_MASK) | imm));
            return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG1, reg, (argw & 0x3fc) >> 2));
        }
        imm = get_imm((sljit_uw)-argw & ~(sljit_uw)0x3fc);
        if (imm) {
            argw = -argw;
            FAIL_IF(push_inst(compiler, SUB | RD(TMP_REG1) | RN(arg & REG_MASK) | imm));
            return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, TMP_REG1, reg, (argw & 0x3fc) >> 2));
        }
    }
 
    if (arg) {
        FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)argw));
        FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg & REG_MASK) | RM(TMP_REG1)));
    }
    else
        FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)argw));
 
    return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG1, reg, 0));
}
 
static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    op ^= SLJIT_32;
 
    if (src & SLJIT_MEM) {
        FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG1, src, srcw));
        src = TMP_FREG1;
    }
 
    FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCVT_S32_F32, op & SLJIT_32, TMP_FREG1, src, 0)));
 
    if (FAST_IS_REG(dst))
        return push_inst(compiler, VMOV | (1 << 20) | RD(dst) | VN(TMP_FREG1));
 
    /* Store the integer value from a VFP register. */
    return emit_fop_mem(compiler, 0, TMP_FREG1, dst, dstw);
}
 
static sljit_s32 sljit_emit_fop1_conv_f64_from_w(struct sljit_compiler *compiler, sljit_ins ins,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
 
    if (FAST_IS_REG(src))
        FAIL_IF(push_inst(compiler, VMOV | RD(src) | VN(TMP_FREG1)));
    else if (src & SLJIT_MEM) {
        /* Load the integer value into a VFP register. */
        FAIL_IF(emit_fop_mem(compiler, FPU_LOAD, TMP_FREG1, src, srcw));
    }
    else {
        FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)srcw));
        FAIL_IF(push_inst(compiler, VMOV | RD(TMP_REG1) | VN(TMP_FREG1)));
    }
 
    FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(ins, ins & SLJIT_32, dst_r, TMP_FREG1, 0)));
 
    if (dst & SLJIT_MEM)
        return emit_fop_mem(compiler, (ins & SLJIT_32), TMP_FREG1, dst, dstw);
    return SLJIT_SUCCESS;
}
 
static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    return sljit_emit_fop1_conv_f64_from_w(compiler, VCVT_F32_S32 | (~op & SLJIT_32), dst, dstw, src, srcw);
}
 
static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_uw(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    return sljit_emit_fop1_conv_f64_from_w(compiler, VCVT_F32_U32 | (~op & SLJIT_32), dst, dstw, src, srcw);
}
 
static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    op ^= SLJIT_32;
 
    if (src1 & SLJIT_MEM) {
        FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG1, src1, src1w));
        src1 = TMP_FREG1;
    }
 
    if (src2 & SLJIT_MEM) {
        FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG2, src2, src2w));
        src2 = TMP_FREG2;
    }
 
    FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCMP_F32, op & SLJIT_32, src1, src2, 0)));
    FAIL_IF(push_inst(compiler, VMRS));
 
    if (GET_FLAG_TYPE(op) != SLJIT_UNORDERED_OR_EQUAL)
        return SLJIT_SUCCESS;
 
    return push_inst(compiler, (CMP - CONDITIONAL) | (0x60000000 /* VS */) | SET_FLAGS | RN(TMP_REG1) | RM(TMP_REG1));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_s32 dst_r;
 
    CHECK_ERROR();
 
    SLJIT_COMPILE_ASSERT((SLJIT_32 == 0x100), float_transfer_bit_error);
    SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw);
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
 
    if (GET_OPCODE(op) != SLJIT_CONV_F64_FROM_F32)
        op ^= SLJIT_32;
 
    if (src & SLJIT_MEM) {
        FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, dst_r, src, srcw));
        src = dst_r;
    }
 
    switch (GET_OPCODE(op)) {
    case SLJIT_MOV_F64:
        if (src != dst_r) {
            if (!(dst & SLJIT_MEM))
                FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, op & SLJIT_32, dst_r, src, 0)));
            else
                dst_r = src;
        }
        break;
    case SLJIT_NEG_F64:
        FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VNEG_F32, op & SLJIT_32, dst_r, src, 0)));
        break;
    case SLJIT_ABS_F64:
        FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VABS_F32, op & SLJIT_32, dst_r, src, 0)));
        break;
    case SLJIT_CONV_F64_FROM_F32:
        FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCVT_F64_F32, op & SLJIT_32, dst_r, src, 0)));
        op ^= SLJIT_32;
        break;
    }
 
    if (dst & SLJIT_MEM)
        return emit_fop_mem(compiler, (op & SLJIT_32), dst_r, dst, dstw);
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2, sljit_sw src2w)
{
    sljit_s32 dst_r;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
    ADJUST_LOCAL_OFFSET(dst, dstw);
    ADJUST_LOCAL_OFFSET(src1, src1w);
    ADJUST_LOCAL_OFFSET(src2, src2w);
 
    op ^= SLJIT_32;
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
 
    if (src2 & SLJIT_MEM) {
        FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG2, src2, src2w));
        src2 = TMP_FREG2;
    }
 
    if (src1 & SLJIT_MEM) {
        FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG1, src1, src1w));
        src1 = TMP_FREG1;
    }
 
    switch (GET_OPCODE(op)) {
    case SLJIT_ADD_F64:
        FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VADD_F32, op & SLJIT_32, dst_r, src2, src1)));
        break;
    case SLJIT_SUB_F64:
        FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VSUB_F32, op & SLJIT_32, dst_r, src2, src1)));
        break;
    case SLJIT_MUL_F64:
        FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMUL_F32, op & SLJIT_32, dst_r, src2, src1)));
        break;
    case SLJIT_DIV_F64:
        FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VDIV_F32, op & SLJIT_32, dst_r, src2, src1)));
        break;
    case SLJIT_COPYSIGN_F64:
        FAIL_IF(push_inst(compiler, VMOV | (1 << 20) | VN(src2) | RD(TMP_REG1) | ((op & SLJIT_32) ? (1 << 7) : 0)));
        FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VABS_F32, op & SLJIT_32, dst_r, src1, 0)));
        FAIL_IF(push_inst(compiler, CMP | SET_FLAGS | RN(TMP_REG1) | SRC2_IMM | 0));
        return push_inst(compiler, EMIT_FPU_OPERATION((VNEG_F32 & ~COND_MASK) | 0xb0000000, op & SLJIT_32, dst_r, dst_r, 0));
    }
 
    if (dst_r != dst)
        FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32), TMP_FREG1, dst, dstw));
 
    return SLJIT_SUCCESS;
}
 
#undef EMIT_FPU_DATA_TRANSFER
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fset32(struct sljit_compiler *compiler,
    sljit_s32 freg, sljit_f32 value)
{
#if defined(__ARM_NEON) && __ARM_NEON
    sljit_u32 exp;
    sljit_ins ins;
#endif /* NEON */
    union {
        sljit_u32 imm;
        sljit_f32 value;
    } u;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_fset32(compiler, freg, value));
 
    u.value = value;
 
#if defined(__ARM_NEON) && __ARM_NEON
    if ((u.imm << (32 - 19)) == 0) {
        exp = (u.imm >> (23 + 2)) & 0x3f;
 
        if (exp == 0x20 || exp == 0x1f) {
            ins = ((u.imm >> 24) & 0x80) | ((u.imm >> 19) & 0x7f);
            return push_inst(compiler, (VMOV_F32 ^ (1 << 6)) | ((ins & 0xf0) << 12) | VD(freg) | (ins & 0xf));
        }
    }
#endif /* NEON */
 
    FAIL_IF(load_immediate(compiler, TMP_REG1, u.imm));
    return push_inst(compiler, VMOV | VN(freg) | RD(TMP_REG1));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fset64(struct sljit_compiler *compiler,
    sljit_s32 freg, sljit_f64 value)
{
#if defined(__ARM_NEON) && __ARM_NEON
    sljit_u32 exp;
    sljit_ins ins;
#endif /* NEON */
    union {
        sljit_u32 imm[2];
        sljit_f64 value;
    } u;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_fset64(compiler, freg, value));
 
    u.value = value;
 
#if defined(__ARM_NEON) && __ARM_NEON
    if (u.imm[0] == 0 && (u.imm[1] << (64 - 48)) == 0) {
        exp = (u.imm[1] >> ((52 - 32) + 2)) & 0x1ff;
 
        if (exp == 0x100 || exp == 0xff) {
            ins = ((u.imm[1] >> (56 - 32)) & 0x80) | ((u.imm[1] >> (48 - 32)) & 0x7f);
            return push_inst(compiler, (VMOV_F32 ^ (1 << 6)) | (1 << 8) | ((ins & 0xf0) << 12) | VD(freg) | (ins & 0xf));
        }
    }
#endif /* NEON */
 
    FAIL_IF(load_immediate(compiler, TMP_REG1, u.imm[0]));
    if (u.imm[0] == u.imm[1])
        return push_inst(compiler, VMOV2 | RN(TMP_REG1) | RD(TMP_REG1) | VM(freg));
 
    FAIL_IF(load_immediate(compiler, TMP_REG2, u.imm[1]));
    return push_inst(compiler, VMOV2 | RN(TMP_REG2) | RD(TMP_REG1) | VM(freg));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fcopy(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 freg, sljit_s32 reg)
{
    sljit_s32 reg2;
    sljit_ins inst;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_fcopy(compiler, op, freg, reg));
 
    if (reg & REG_PAIR_MASK) {
        reg2 = REG_PAIR_SECOND(reg);
        reg = REG_PAIR_FIRST(reg);
 
        inst = VMOV2 | RN(reg) | RD(reg2) | VM(freg);
    } else {
        inst = VMOV | VN(freg) | RD(reg);
 
        if (!(op & SLJIT_32))
            inst |= 1 << 7;
    }
 
    if (GET_OPCODE(op) == SLJIT_COPY_FROM_F64)
        inst |= 1 << 20;
 
    return push_inst(compiler, inst);
}
 
/* --------------------------------------------------------------------- */
/*  Conditional instructions                                             */
/* --------------------------------------------------------------------- */
 
static sljit_ins get_cc(struct sljit_compiler *compiler, sljit_s32 type)
{
    switch (type) {
    case SLJIT_EQUAL:
    case SLJIT_ATOMIC_STORED:
    case SLJIT_F_EQUAL:
    case SLJIT_ORDERED_EQUAL:
    case SLJIT_UNORDERED_OR_EQUAL:
        return 0x00000000;
 
    case SLJIT_NOT_EQUAL:
    case SLJIT_ATOMIC_NOT_STORED:
    case SLJIT_F_NOT_EQUAL:
    case SLJIT_UNORDERED_OR_NOT_EQUAL:
    case SLJIT_ORDERED_NOT_EQUAL:
        return 0x10000000;
 
    case SLJIT_CARRY:
        if (compiler->status_flags_state & SLJIT_CURRENT_FLAGS_ADD)
            return 0x20000000;
        /* fallthrough */
 
    case SLJIT_LESS:
        return 0x30000000;
 
    case SLJIT_NOT_CARRY:
        if (compiler->status_flags_state & SLJIT_CURRENT_FLAGS_ADD)
            return 0x30000000;
        /* fallthrough */
 
    case SLJIT_GREATER_EQUAL:
        return 0x20000000;
 
    case SLJIT_GREATER:
    case SLJIT_UNORDERED_OR_GREATER:
        return 0x80000000;
 
    case SLJIT_LESS_EQUAL:
    case SLJIT_F_LESS_EQUAL:
    case SLJIT_ORDERED_LESS_EQUAL:
        return 0x90000000;
 
    case SLJIT_SIG_LESS:
    case SLJIT_UNORDERED_OR_LESS:
        return 0xb0000000;
 
    case SLJIT_SIG_GREATER_EQUAL:
    case SLJIT_F_GREATER_EQUAL:
    case SLJIT_ORDERED_GREATER_EQUAL:
        return 0xa0000000;
 
    case SLJIT_SIG_GREATER:
    case SLJIT_F_GREATER:
    case SLJIT_ORDERED_GREATER:
        return 0xc0000000;
 
    case SLJIT_SIG_LESS_EQUAL:
    case SLJIT_UNORDERED_OR_LESS_EQUAL:
        return 0xd0000000;
 
    case SLJIT_OVERFLOW:
        if (!(compiler->status_flags_state & (SLJIT_CURRENT_FLAGS_ADD | SLJIT_CURRENT_FLAGS_SUB)))
            return 0x10000000;
        /* fallthrough */
 
    case SLJIT_UNORDERED:
        return 0x60000000;
 
    case SLJIT_NOT_OVERFLOW:
        if (!(compiler->status_flags_state & (SLJIT_CURRENT_FLAGS_ADD | SLJIT_CURRENT_FLAGS_SUB)))
            return 0x00000000;
        /* fallthrough */
 
    case SLJIT_ORDERED:
        return 0x70000000;
 
    case SLJIT_F_LESS:
    case SLJIT_ORDERED_LESS:
        return 0x40000000;
 
    case SLJIT_UNORDERED_OR_GREATER_EQUAL:
        return 0x50000000;
 
    default:
        SLJIT_ASSERT(type >= SLJIT_JUMP && type <= SLJIT_CALL_REG_ARG);
        return 0xe0000000;
    }
}
 
SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler)
{
    struct sljit_label *label;
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_emit_label(compiler));
 
    if (compiler->last_label && compiler->last_label->size == compiler->size)
        return compiler->last_label;
 
    label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label));
    PTR_FAIL_IF(!label);
    set_label(label, compiler);
    return label;
}
 
SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type)
{
    struct sljit_jump *jump;
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_emit_jump(compiler, type));
 
    jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
    PTR_FAIL_IF(!jump);
    set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP);
    type &= 0xff;
 
    SLJIT_ASSERT(reg_map[TMP_REG1] != 14);
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    if (type >= SLJIT_FAST_CALL)
        PTR_FAIL_IF(prepare_blx(compiler));
 
    jump->addr = compiler->size;
    PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1,
        type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(compiler, type), 0));
 
    if (jump->flags & SLJIT_REWRITABLE_JUMP)
        compiler->patches++;
 
    if (type >= SLJIT_FAST_CALL) {
        jump->flags |= IS_BL;
        jump->addr = compiler->size;
        PTR_FAIL_IF(emit_blx(compiler));
    }
#else /* !SLJIT_CONFIG_ARM_V6 */
    jump->addr = compiler->size;
    if (type >= SLJIT_FAST_CALL)
        jump->flags |= IS_BL;
    PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(compiler, type)));
    compiler->size += JUMP_MAX_SIZE - 1;
#endif /* SLJIT_CONFIG_ARM_V6 */
    return jump;
}
 
#ifdef __SOFTFP__
 
static sljit_s32 softfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src, sljit_u32 *extra_space)
{
    sljit_u32 is_tail_call = *extra_space & SLJIT_CALL_RETURN;
    sljit_u32 offset = 0;
    sljit_u32 word_arg_offset = 0;
    sljit_u32 src_offset = 4 * sizeof(sljit_sw);
    sljit_u32 float_arg_count = 0;
    sljit_s32 types = 0;
    sljit_u8 offsets[4];
    sljit_u8 *offset_ptr = offsets;
 
    if (src && FAST_IS_REG(*src))
        src_offset = (sljit_u32)reg_map[*src] * sizeof(sljit_sw);
 
    arg_types >>= SLJIT_ARG_SHIFT;
 
    while (arg_types) {
        types = (types << SLJIT_ARG_SHIFT) | (arg_types & SLJIT_ARG_MASK);
 
        switch (arg_types & SLJIT_ARG_MASK) {
        case SLJIT_ARG_TYPE_F64:
            if (offset & 0x7)
                offset += sizeof(sljit_sw);
            *offset_ptr++ = (sljit_u8)offset;
            offset += sizeof(sljit_f64);
            float_arg_count++;
            break;
        case SLJIT_ARG_TYPE_F32:
            *offset_ptr++ = (sljit_u8)offset;
            offset += sizeof(sljit_f32);
            float_arg_count++;
            break;
        default:
            *offset_ptr++ = (sljit_u8)offset;
            offset += sizeof(sljit_sw);
            word_arg_offset += sizeof(sljit_sw);
            break;
        }
 
        arg_types >>= SLJIT_ARG_SHIFT;
    }
 
    if (offset > 4 * sizeof(sljit_sw) && (!is_tail_call || offset > compiler->args_size)) {
        /* Keep lr register on the stack. */
        if (is_tail_call)
            offset += sizeof(sljit_sw);
 
        offset = ((offset - 4 * sizeof(sljit_sw)) + 0x7) & ~(sljit_u32)0x7;
 
        *extra_space = offset;
 
        if (is_tail_call)
            FAIL_IF(emit_stack_frame_release(compiler, (sljit_s32)offset));
        else
            FAIL_IF(push_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | offset));
    } else {
        if (is_tail_call)
            FAIL_IF(emit_stack_frame_release(compiler, -1));
        *extra_space = 0;
    }
 
    /* Process arguments in reversed direction. */
    while (types) {
        switch (types & SLJIT_ARG_MASK) {
        case SLJIT_ARG_TYPE_F64:
            float_arg_count--;
            offset = *(--offset_ptr);
 
            SLJIT_ASSERT((offset & 0x7) == 0);
 
            if (offset < 4 * sizeof(sljit_sw)) {
                if (src_offset == offset || src_offset == offset + sizeof(sljit_sw)) {
                    FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2)));
                    *src = TMP_REG1;
                }
                FAIL_IF(push_inst(compiler, VMOV2 | 0x100000 | (offset << 10) | ((offset + sizeof(sljit_sw)) << 14) | float_arg_count));
            } else
                FAIL_IF(push_inst(compiler, VSTR_F32 | 0x800100 | RN(SLJIT_SP)
                        | (float_arg_count << 12) | ((offset - 4 * sizeof(sljit_sw)) >> 2)));
            break;
        case SLJIT_ARG_TYPE_F32:
            float_arg_count--;
            offset = *(--offset_ptr);
 
            if (offset < 4 * sizeof(sljit_sw)) {
                if (src_offset == offset) {
                    FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2)));
                    *src = TMP_REG1;
                }
                FAIL_IF(push_inst(compiler, VMOV | 0x100000 | (float_arg_count << 16) | (offset << 10)));
            } else
                FAIL_IF(push_inst(compiler, VSTR_F32 | 0x800000 | RN(SLJIT_SP)
                        | (float_arg_count << 12) | ((offset - 4 * sizeof(sljit_sw)) >> 2)));
            break;
        default:
            word_arg_offset -= sizeof(sljit_sw);
            offset = *(--offset_ptr);
 
            SLJIT_ASSERT(offset >= word_arg_offset);
 
            if (offset != word_arg_offset) {
                if (offset < 4 * sizeof(sljit_sw)) {
                    if (src_offset == offset) {
                        FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2)));
                        *src = TMP_REG1;
                    }
                    else if (src_offset == word_arg_offset) {
                        *src = (sljit_s32)(SLJIT_R0 + (offset >> 2));
                        src_offset = offset;
                    }
                    FAIL_IF(push_inst(compiler, MOV | (offset << 10) | (word_arg_offset >> 2)));
                } else
                    FAIL_IF(push_inst(compiler, STR | 0x800000 | RN(SLJIT_SP) | (word_arg_offset << 10) | (offset - 4 * sizeof(sljit_sw))));
            }
            break;
        }
 
        types >>= SLJIT_ARG_SHIFT;
    }
 
    return SLJIT_SUCCESS;
}
 
static sljit_s32 softfloat_post_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types)
{
    if ((arg_types & SLJIT_ARG_MASK) == SLJIT_ARG_TYPE_F64)
        FAIL_IF(push_inst(compiler, VMOV2 | (1 << 16) | (0 << 12) | 0));
    if ((arg_types & SLJIT_ARG_MASK) == SLJIT_ARG_TYPE_F32)
        FAIL_IF(push_inst(compiler, VMOV | (0 << 16) | (0 << 12)));
 
    return SLJIT_SUCCESS;
}
 
#else /* !__SOFTFP__ */
 
static sljit_s32 hardfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types)
{
    sljit_u32 offset = SLJIT_FR0;
    sljit_u32 new_offset = SLJIT_FR0;
    sljit_u32 f32_offset = 0;
 
    /* Remove return value. */
    arg_types >>= SLJIT_ARG_SHIFT;
 
    while (arg_types) {
        switch (arg_types & SLJIT_ARG_MASK) {
        case SLJIT_ARG_TYPE_F64:
            if (offset != new_offset)
                FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32,
                    SLJIT_32, new_offset, offset, 0)));
 
            new_offset++;
            offset++;
            break;
        case SLJIT_ARG_TYPE_F32:
            if (f32_offset != 0) {
                FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32,
                    0x400000, f32_offset, offset, 0)));
                f32_offset = 0;
            } else {
                if (offset != new_offset)
                    FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32,
                        0, new_offset, offset, 0)));
                f32_offset = new_offset;
                new_offset++;
            }
            offset++;
            break;
        }
        arg_types >>= SLJIT_ARG_SHIFT;
    }
 
    return SLJIT_SUCCESS;
}
 
#endif /* __SOFTFP__ */
 
SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 arg_types)
{
#ifdef __SOFTFP__
    struct sljit_jump *jump;
    sljit_u32 extra_space = (sljit_u32)type;
#endif
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types));
 
#ifdef __SOFTFP__
    if ((type & 0xff) != SLJIT_CALL_REG_ARG) {
        PTR_FAIL_IF(softfloat_call_with_args(compiler, arg_types, NULL, &extra_space));
        SLJIT_ASSERT((extra_space & 0x7) == 0);
 
        if ((type & SLJIT_CALL_RETURN) && extra_space == 0)
            type = SLJIT_JUMP | (type & SLJIT_REWRITABLE_JUMP);
 
        SLJIT_SKIP_CHECKS(compiler);
        jump = sljit_emit_jump(compiler, type);
        PTR_FAIL_IF(jump == NULL);
 
        if (extra_space > 0) {
            if (type & SLJIT_CALL_RETURN)
                PTR_FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1,
                    TMP_REG2, SLJIT_SP, extra_space - sizeof(sljit_sw))));
 
            PTR_FAIL_IF(push_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | extra_space));
 
            if (type & SLJIT_CALL_RETURN) {
                PTR_FAIL_IF(push_inst(compiler, BX | RM(TMP_REG2)));
                return jump;
            }
        }
 
        SLJIT_ASSERT(!(type & SLJIT_CALL_RETURN));
        PTR_FAIL_IF(softfloat_post_call_with_args(compiler, arg_types));
        return jump;
    }
#endif /* __SOFTFP__ */
 
    if (type & SLJIT_CALL_RETURN) {
        PTR_FAIL_IF(emit_stack_frame_release(compiler, -1));
        type = SLJIT_JUMP | (type & SLJIT_REWRITABLE_JUMP);
    }
 
#ifndef __SOFTFP__
    if ((type & 0xff) != SLJIT_CALL_REG_ARG)
        PTR_FAIL_IF(hardfloat_call_with_args(compiler, arg_types));
#endif /* !__SOFTFP__ */
 
    SLJIT_SKIP_CHECKS(compiler);
    return sljit_emit_jump(compiler, type);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw)
{
    struct sljit_jump *jump;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_ijump(compiler, type, src, srcw));
    ADJUST_LOCAL_OFFSET(src, srcw);
 
    SLJIT_ASSERT(reg_map[TMP_REG1] != 14);
 
    if (src != SLJIT_IMM) {
        if (FAST_IS_REG(src)) {
            SLJIT_ASSERT(reg_map[src] != 14);
            return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src));
        }
 
        SLJIT_ASSERT(src & SLJIT_MEM);
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1));
        return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1));
    }
 
    /* These jumps are converted to jump/call instructions when possible. */
    jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
    FAIL_IF(!jump);
    set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0));
    jump->u.target = (sljit_uw)srcw;
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    if (type >= SLJIT_FAST_CALL)
        FAIL_IF(prepare_blx(compiler));
    jump->addr = compiler->size;
    FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0), 0));
    if (type >= SLJIT_FAST_CALL) {
        jump->addr = compiler->size;
        FAIL_IF(emit_blx(compiler));
    }
#else /* !SLJIT_CONFIG_ARM_V6 */
    jump->addr = compiler->size;
    FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)));
    compiler->size += JUMP_MAX_SIZE - 1;
#endif /* SLJIT_CONFIG_ARM_V6 */
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 arg_types,
    sljit_s32 src, sljit_sw srcw)
{
#ifdef __SOFTFP__
    sljit_u32 extra_space = (sljit_u32)type;
#endif
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw));
 
    if (src & SLJIT_MEM) {
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1));
        src = TMP_REG1;
    }
 
    if ((type & SLJIT_CALL_RETURN) && (src >= SLJIT_FIRST_SAVED_REG && src <= (SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options)))) {
        FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | RM(src)));
        src = TMP_REG1;
    }
 
#ifdef __SOFTFP__
    if ((type & 0xff) != SLJIT_CALL_REG_ARG) {
        FAIL_IF(softfloat_call_with_args(compiler, arg_types, &src, &extra_space));
        SLJIT_ASSERT((extra_space & 0x7) == 0);
 
        if ((type & SLJIT_CALL_RETURN) && extra_space == 0)
            type = SLJIT_JUMP;
 
        SLJIT_SKIP_CHECKS(compiler);
        FAIL_IF(sljit_emit_ijump(compiler, type, src, srcw));
 
        if (extra_space > 0) {
            if (type & SLJIT_CALL_RETURN)
                FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1,
                    TMP_REG2, SLJIT_SP, extra_space - sizeof(sljit_sw))));
 
            FAIL_IF(push_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | extra_space));
 
            if (type & SLJIT_CALL_RETURN)
                return push_inst(compiler, BX | RM(TMP_REG2));
        }
 
        SLJIT_ASSERT(!(type & SLJIT_CALL_RETURN));
        return softfloat_post_call_with_args(compiler, arg_types);
    }
#endif /* __SOFTFP__ */
 
    if (type & SLJIT_CALL_RETURN) {
        FAIL_IF(emit_stack_frame_release(compiler, -1));
        type = SLJIT_JUMP;
    }
 
#ifndef __SOFTFP__
    if ((type & 0xff) != SLJIT_CALL_REG_ARG)
        FAIL_IF(hardfloat_call_with_args(compiler, arg_types));
#endif /* !__SOFTFP__ */
 
    SLJIT_SKIP_CHECKS(compiler);
    return sljit_emit_ijump(compiler, type, src, srcw);
}
 
#ifdef __SOFTFP__
 
static SLJIT_INLINE sljit_s32 emit_fmov_before_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
{
    if (compiler->options & SLJIT_ENTER_REG_ARG) {
        if (src == SLJIT_FR0)
            return SLJIT_SUCCESS;
 
        SLJIT_SKIP_CHECKS(compiler);
        return sljit_emit_fop1(compiler, op, SLJIT_RETURN_FREG, 0, src, srcw);
    }
 
    if (FAST_IS_REG(src)) {
        if (op & SLJIT_32)
            return push_inst(compiler, VMOV | (1 << 20) | RD(SLJIT_R0) | VN(src));
        return push_inst(compiler, VMOV2 | (1 << 20) | RD(SLJIT_R0) | RN(SLJIT_R1) | VM(src));
    }
 
    SLJIT_SKIP_CHECKS(compiler);
 
    if (op & SLJIT_32)
        return sljit_emit_op1(compiler, SLJIT_MOV, SLJIT_R0, 0, src, srcw);
    return sljit_emit_mem(compiler, SLJIT_MOV, SLJIT_REG_PAIR(SLJIT_R0, SLJIT_R1), src, srcw);
}
 
#endif /* __SOFTFP__ */
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst, sljit_sw dstw,
    sljit_s32 type)
{
    sljit_s32 dst_reg, flags = GET_ALL_FLAGS(op);
    sljit_ins cc, ins;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type));
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    op = GET_OPCODE(op);
    cc = get_cc(compiler, type);
    dst_reg = FAST_IS_REG(dst) ? dst : TMP_REG1;
 
    if (op < SLJIT_ADD) {
        FAIL_IF(push_inst(compiler, MOV | RD(dst_reg) | SRC2_IMM | 0));
        FAIL_IF(push_inst(compiler, ((MOV | RD(dst_reg) | SRC2_IMM | 1) & ~COND_MASK) | cc));
        if (dst & SLJIT_MEM)
            return emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2);
        return SLJIT_SUCCESS;
    }
 
    ins = (op == SLJIT_AND ? AND : (op == SLJIT_OR ? ORR : EOR));
 
    if (dst & SLJIT_MEM)
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, dst, dstw, TMP_REG2));
 
    FAIL_IF(push_inst(compiler, ((ins | RD(dst_reg) | RN(dst_reg) | SRC2_IMM | 1) & ~COND_MASK) | cc));
 
    if (op == SLJIT_AND)
        FAIL_IF(push_inst(compiler, ((ins | RD(dst_reg) | RN(dst_reg) | SRC2_IMM | 0) & ~COND_MASK) | (cc ^ 0x10000000)));
 
    if (dst & SLJIT_MEM)
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2));
 
    if (flags & SLJIT_SET_Z)
        return push_inst(compiler, MOV | SET_FLAGS | RD(TMP_REG2) | RM(dst_reg));
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_select(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 dst_reg,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2_reg)
{
    sljit_ins cc, tmp;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_select(compiler, type, dst_reg, src1, src1w, src2_reg));
 
    ADJUST_LOCAL_OFFSET(src1, src1w);
 
    if (src2_reg != dst_reg && src1 == dst_reg) {
        src1 = src2_reg;
        src1w = 0;
        src2_reg = dst_reg;
        type ^= 0x1;
    }
 
    if (src1 & SLJIT_MEM) {
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, (src2_reg != dst_reg) ? dst_reg : TMP_REG1, src1, src1w, TMP_REG1));
 
        if (src2_reg != dst_reg) {
            src1 = src2_reg;
            src1w = 0;
            type ^= 0x1;
        } else {
            src1 = TMP_REG1;
            src1w = 0;
        }
    } else if (dst_reg != src2_reg)
        FAIL_IF(push_inst(compiler, MOV | RD(dst_reg) | RM(src2_reg)));
 
    cc = get_cc(compiler, type & ~SLJIT_32);
 
    if (SLJIT_UNLIKELY(src1 == SLJIT_IMM)) {
        tmp = get_imm((sljit_uw)src1w);
        if (tmp)
            return push_inst(compiler, ((MOV | RD(dst_reg) | tmp) & ~COND_MASK) | cc);
 
        tmp = get_imm(~(sljit_uw)src1w);
        if (tmp)
            return push_inst(compiler, ((MVN | RD(dst_reg) | tmp) & ~COND_MASK) | cc);
 
#if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
        tmp = (sljit_ins)src1w;
        FAIL_IF(push_inst(compiler, (MOVW & ~COND_MASK) | cc | RD(dst_reg) | ((tmp << 4) & 0xf0000) | (tmp & 0xfff)));
        if (tmp <= 0xffff)
            return SLJIT_SUCCESS;
        return push_inst(compiler, (MOVT & ~COND_MASK) | cc | RD(dst_reg) | ((tmp >> 12) & 0xf0000) | ((tmp >> 16) & 0xfff));
#else /* !SLJIT_CONFIG_ARM_V7 */
        FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)src1w));
        src1 = TMP_REG1;
#endif /* SLJIT_CONFIG_ARM_V7 */
    }
 
    return push_inst(compiler, ((MOV | RD(dst_reg) | RM(src1)) & ~COND_MASK) | cc);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fselect(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 dst_freg,
    sljit_s32 src1, sljit_sw src1w,
    sljit_s32 src2_freg)
{
    sljit_ins cc;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_fselect(compiler, type, dst_freg, src1, src1w, src2_freg));
 
    ADJUST_LOCAL_OFFSET(src1, src1w);
 
    type ^= SLJIT_32;
 
    if (dst_freg != src2_freg) {
        if (dst_freg == src1) {
            src1 = src2_freg;
            src1w = 0;
            type ^= 0x1;
        } else
            FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, (type & SLJIT_32), dst_freg, src2_freg, 0)));
    }
 
    if (src1 & SLJIT_MEM) {
        FAIL_IF(emit_fop_mem(compiler, (type & SLJIT_32) | FPU_LOAD, TMP_FREG2, src1, src1w));
        src1 = TMP_FREG2;
    }
 
    cc = get_cc(compiler, type & ~SLJIT_32);
    return push_inst(compiler, EMIT_FPU_OPERATION((VMOV_F32 & ~COND_MASK) | cc, (type & SLJIT_32), dst_freg, src1, 0));
}
 
#undef EMIT_FPU_OPERATION
 
static sljit_s32 update_mem_addr(struct sljit_compiler *compiler, sljit_s32 *mem, sljit_sw *memw, sljit_s32 max_offset)
{
    sljit_s32 arg = *mem;
    sljit_sw argw = *memw;
    sljit_uw imm, tmp;
    sljit_sw mask = 0xfff;
    sljit_sw sign = 0x1000;
 
    SLJIT_ASSERT(max_offset >= 0xf00);
 
    *mem = TMP_REG1;
 
    if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
        *memw = 0;
        return push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | ((sljit_ins)(argw & 0x3) << 7));
    }
 
    arg &= REG_MASK;
 
    if (arg) {
        if (argw <= max_offset && argw >= -mask) {
            *mem = arg;
            return SLJIT_SUCCESS;
        }
 
        if (argw >= 0) {
            tmp = (sljit_uw)(argw & (sign | mask));
            tmp = (sljit_uw)((argw + ((tmp <= (sljit_uw)max_offset || tmp == (sljit_uw)sign) ? 0 : sign)) & ~mask);
            imm = get_imm(tmp);
 
            if (imm) {
                *memw = argw - (sljit_sw)tmp;
                SLJIT_ASSERT(*memw >= -mask && *memw <= max_offset);
 
                return push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg) | imm);
            }
        } else {
            tmp = (sljit_uw)(-argw & (sign | mask));
            tmp = (sljit_uw)((-argw + ((tmp <= (sljit_uw)((sign << 1) - max_offset - 1)) ? 0 : sign)) & ~mask);
            imm = get_imm(tmp);
 
            if (imm) {
                *memw = argw + (sljit_sw)tmp;
                SLJIT_ASSERT(*memw >= -mask && *memw <= max_offset);
 
                return push_inst(compiler, SUB | RD(TMP_REG1) | RN(arg) | imm);
            }
        }
    }
 
    tmp = (sljit_uw)(argw & (sign | mask));
    tmp = (sljit_uw)((argw + ((tmp <= (sljit_uw)max_offset || tmp == (sljit_uw)sign) ? 0 : sign)) & ~mask);
    *memw = argw - (sljit_sw)tmp;
 
    FAIL_IF(load_immediate(compiler, TMP_REG1, tmp));
 
    if (arg == 0)
        return SLJIT_SUCCESS;
 
    return push_inst(compiler, ADD | RD(TMP_REG1) | RN(TMP_REG1) | RM(arg));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 reg,
    sljit_s32 mem, sljit_sw memw)
{
    sljit_s32 flags;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_mem(compiler, type, reg, mem, memw));
 
    if (!(reg & REG_PAIR_MASK))
        return sljit_emit_mem_unaligned(compiler, type, reg, mem, memw);
 
    ADJUST_LOCAL_OFFSET(mem, memw);
 
    FAIL_IF(update_mem_addr(compiler, &mem, &memw, 0xfff - 4));
 
    flags = WORD_SIZE;
 
    if (!(type & SLJIT_MEM_STORE)) {
        if (REG_PAIR_FIRST(reg) == (mem & REG_MASK)) {
            FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, REG_PAIR_SECOND(reg), SLJIT_MEM1(mem), memw + SSIZE_OF(sw), TMP_REG1));
            return emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, REG_PAIR_FIRST(reg), SLJIT_MEM1(mem), memw, TMP_REG1);
        }
 
        flags = WORD_SIZE | LOAD_DATA;
    }
 
    FAIL_IF(emit_op_mem(compiler, flags, REG_PAIR_FIRST(reg), SLJIT_MEM1(mem), memw, TMP_REG1));
    return emit_op_mem(compiler, flags, REG_PAIR_SECOND(reg), SLJIT_MEM1(mem), memw + SSIZE_OF(sw), TMP_REG1);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem_update(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 reg,
    sljit_s32 mem, sljit_sw memw)
{
    sljit_s32 flags;
    sljit_ins is_type1_transfer, inst;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_mem_update(compiler, type, reg, mem, memw));
 
    is_type1_transfer = 1;
 
    switch (type & 0xff) {
    case SLJIT_MOV:
    case SLJIT_MOV_U32:
    case SLJIT_MOV_S32:
    case SLJIT_MOV32:
    case SLJIT_MOV_P:
        flags = WORD_SIZE;
        break;
    case SLJIT_MOV_U8:
        flags = BYTE_SIZE;
        break;
    case SLJIT_MOV_S8:
        if (!(type & SLJIT_MEM_STORE))
            is_type1_transfer = 0;
        flags = BYTE_SIZE | SIGNED;
        break;
    case SLJIT_MOV_U16:
        is_type1_transfer = 0;
        flags = HALF_SIZE;
        break;
    case SLJIT_MOV_S16:
        is_type1_transfer = 0;
        flags = HALF_SIZE | SIGNED;
        break;
    default:
        SLJIT_UNREACHABLE();
        flags = WORD_SIZE;
        break;
    }
 
    if (!(type & SLJIT_MEM_STORE))
        flags |= LOAD_DATA;
 
    SLJIT_ASSERT(is_type1_transfer == !!IS_TYPE1_TRANSFER(flags));
 
    if (SLJIT_UNLIKELY(mem & OFFS_REG_MASK)) {
        if (!is_type1_transfer && memw != 0)
            return SLJIT_ERR_UNSUPPORTED;
    } else {
        if (is_type1_transfer) {
            if (memw > 4095 || memw < -4095)
                return SLJIT_ERR_UNSUPPORTED;
        } else if (memw > 255 || memw < -255)
            return SLJIT_ERR_UNSUPPORTED;
    }
 
    if (type & SLJIT_MEM_SUPP)
        return SLJIT_SUCCESS;
 
    if (SLJIT_UNLIKELY(mem & OFFS_REG_MASK)) {
        memw &= 0x3;
 
        inst = EMIT_DATA_TRANSFER(flags, 1, reg, mem & REG_MASK, RM(OFFS_REG(mem)) | ((sljit_ins)memw << 7));
 
        if (is_type1_transfer)
            inst |= (1 << 25);
 
        if (type & SLJIT_MEM_POST)
            inst ^= (1 << 24);
        else
            inst |= (1 << 21);
 
        return push_inst(compiler, inst);
    }
 
    inst = EMIT_DATA_TRANSFER(flags, 0, reg, mem & REG_MASK, 0);
 
    if (type & SLJIT_MEM_POST)
        inst ^= (1 << 24);
    else
        inst |= (1 << 21);
 
    if (is_type1_transfer) {
        if (memw >= 0)
            inst |= (1 << 23);
        else
            memw = -memw;
 
        return push_inst(compiler, inst | (sljit_ins)memw);
    }
 
    if (memw >= 0)
        inst |= (1 << 23);
    else
        memw = -memw;
 
    return push_inst(compiler, inst | TYPE2_TRANSFER_IMM((sljit_ins)memw));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fmem(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 mem, sljit_sw memw)
{
    CHECK_ERROR();
    CHECK(check_sljit_emit_fmem(compiler, type, freg, mem, memw));
 
    if (type & SLJIT_MEM_ALIGNED_32)
        return emit_fop_mem(compiler, ((type ^ SLJIT_32) & SLJIT_32) | ((type & SLJIT_MEM_STORE) ? 0 : FPU_LOAD), freg, mem, memw);
 
    if (type & SLJIT_MEM_STORE) {
        FAIL_IF(push_inst(compiler, VMOV | (1 << 20) | VN(freg) | RD(TMP_REG2)));
 
        if (type & SLJIT_32)
            return emit_op_mem(compiler, WORD_SIZE, TMP_REG2, mem, memw, TMP_REG1);
 
        FAIL_IF(update_mem_addr(compiler, &mem, &memw, 0xfff - 4));
        mem |= SLJIT_MEM;
 
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, mem, memw, TMP_REG1));
        FAIL_IF(push_inst(compiler, VMOV | (1 << 20) | VN(freg) | 0x80 | RD(TMP_REG2)));
        return emit_op_mem(compiler, WORD_SIZE, TMP_REG2, mem, memw + 4, TMP_REG1);
    }
 
    if (type & SLJIT_32) {
        FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG2, mem, memw, TMP_REG1));
        return push_inst(compiler, VMOV | VN(freg) | RD(TMP_REG2));
    }
 
    FAIL_IF(update_mem_addr(compiler, &mem, &memw, 0xfff - 4));
    mem |= SLJIT_MEM;
 
    FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG2, mem, memw, TMP_REG1));
    FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, mem, memw + 4, TMP_REG1));
    return push_inst(compiler, VMOV2 | VM(freg) | RD(TMP_REG2) | RN(TMP_REG1));
}
 
static sljit_s32 sljit_emit_simd_mem_offset(struct sljit_compiler *compiler, sljit_s32 *mem_ptr, sljit_sw memw)
{
    sljit_s32 mem = *mem_ptr;
    sljit_uw imm;
 
    if (SLJIT_UNLIKELY(mem & OFFS_REG_MASK)) {
        *mem_ptr = TMP_REG1;
        return push_inst(compiler, ADD | RD(TMP_REG1) | RN(mem & REG_MASK) | RM(OFFS_REG(mem)) | ((sljit_ins)(memw & 0x3) << 7));
    }
 
    if (SLJIT_UNLIKELY(!(mem & REG_MASK))) {
        *mem_ptr = TMP_REG1;
        return load_immediate(compiler, TMP_REG1, (sljit_uw)memw);
    }
 
    mem &= REG_MASK;
 
    if (memw == 0) {
        *mem_ptr = mem;
        return SLJIT_SUCCESS;
    }
 
    *mem_ptr = TMP_REG1;
    imm = get_imm((sljit_uw)(memw < 0 ? -memw : memw));
 
    if (imm != 0)
        return push_inst(compiler, ((memw < 0) ? SUB : ADD) | RD(TMP_REG1) | RN(mem) | imm);
 
    FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)memw));
    return push_inst(compiler, ADD | RD(TMP_REG1) | RN(TMP_REG1) | RM(mem));
}
 
static SLJIT_INLINE sljit_s32 simd_get_quad_reg_index(sljit_s32 freg)
{
    freg += freg & 0x1;
 
    SLJIT_ASSERT((freg_map[freg] & 0x1) == (freg <= SLJIT_NUMBER_OF_SCRATCH_FLOAT_REGISTERS));
 
    if (freg <= SLJIT_NUMBER_OF_SCRATCH_FLOAT_REGISTERS)
        freg--;
 
    return freg;
}
 
#define SLJIT_QUAD_OTHER_HALF(freg) ((((freg) & 0x1) << 1) - 1)
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_mov(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 srcdst, sljit_sw srcdstw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_s32 alignment = SLJIT_SIMD_GET_ELEM2_SIZE(type);
    sljit_ins ins;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_mov(compiler, type, freg, srcdst, srcdstw));
 
    ADJUST_LOCAL_OFFSET(srcdst, srcdstw);
 
    if (reg_size != 3 && reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if ((type & SLJIT_SIMD_FLOAT) && (elem_size < 2 || elem_size > 3))
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (reg_size == 4)
        freg = simd_get_quad_reg_index(freg);
 
    if (!(srcdst & SLJIT_MEM)) {
        if (reg_size == 4)
            srcdst = simd_get_quad_reg_index(srcdst);
 
        if (type & SLJIT_SIMD_STORE)
            ins = VD(srcdst) | VN(freg) | VM(freg);
        else
            ins = VD(freg) | VN(srcdst) | VM(srcdst);
 
        if (reg_size == 4)
            ins |= (sljit_ins)1 << 6;
 
        return push_inst(compiler, VORR | ins);
    }
 
    FAIL_IF(sljit_emit_simd_mem_offset(compiler, &srcdst, srcdstw));
 
    if (elem_size > 3)
        elem_size = 3;
 
    ins = ((type & SLJIT_SIMD_STORE) ? VST1 : VLD1) | VD(freg)
        | (sljit_ins)((reg_size == 3) ? (0x7 << 8) : (0xa << 8));
 
    SLJIT_ASSERT(reg_size >= alignment);
 
    if (alignment == 3)
        ins |= 0x10;
    else if (alignment >= 3)
        ins |= 0x20;
 
    return push_inst(compiler, ins | RN(srcdst) | ((sljit_ins)elem_size) << 6 | 0xf);
}
 
static sljit_ins simd_get_imm(sljit_s32 elem_size, sljit_uw value)
{
    sljit_ins result;
 
    if (elem_size > 1 && (sljit_u16)value == (value >> 16)) {
        elem_size = 1;
        value = (sljit_u16)value;
    }
 
    if (elem_size == 1 && (sljit_u8)value == (value >> 8)) {
        elem_size = 0;
        value = (sljit_u8)value;
    }
 
    switch (elem_size) {
    case 0:
        SLJIT_ASSERT(value <= 0xff);
        result = 0xe00;
        break;
    case 1:
        SLJIT_ASSERT(value <= 0xffff);
        result = 0;
 
        while (1) {
            if (value <= 0xff) {
                result |= 0x800;
                break;
            }
 
            if ((value & 0xff) == 0) {
                value >>= 8;
                result |= 0xa00;
                break;
            }
 
            if (result != 0)
                return ~(sljit_ins)0;
 
            value ^= (sljit_uw)0xffff;
            result = (1 << 5);
        }
        break;
    default:
        SLJIT_ASSERT(value <= 0xffffffff);
        result = 0;
 
        while (1) {
            if (value <= 0xff) {
                result |= 0x000;
                break;
            }
 
            if ((value & ~(sljit_uw)0xff00) == 0) {
                value >>= 8;
                result |= 0x200;
                break;
            }
 
            if ((value & ~(sljit_uw)0xff0000) == 0) {
                value >>= 16;
                result |= 0x400;
                break;
            }
 
            if ((value & ~(sljit_uw)0xff000000) == 0) {
                value >>= 24;
                result |= 0x600;
                break;
            }
 
            if ((value & (sljit_uw)0xff) == 0xff && (value >> 16) == 0) {
                value >>= 8;
                result |= 0xc00;
                break;
            }
 
            if ((value & (sljit_uw)0xffff) == 0xffff && (value >> 24) == 0) {
                value >>= 16;
                result |= 0xd00;
                break;
            }
 
            if (result != 0)
                return ~(sljit_ins)0;
 
            value = ~value;
            result = (1 << 5);
        }
        break;
    }
 
    return ((sljit_ins)value & 0xf) | (((sljit_ins)value & 0x70) << 12) | (((sljit_ins)value & 0x80) << 17) | result;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_replicate(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_ins ins, imm;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_replicate(compiler, type, freg, src, srcw));
 
    ADJUST_LOCAL_OFFSET(src, srcw);
 
    if (reg_size != 3 && reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if ((type & SLJIT_SIMD_FLOAT) ? (elem_size < 2 || elem_size > 3) : (elem_size > 2))
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (reg_size == 4)
        freg = simd_get_quad_reg_index(freg);
 
    if (src == SLJIT_IMM && srcw == 0)
        return push_inst(compiler, VMOV_i | ((reg_size == 4) ? (1 << 6) : 0) | VD(freg));
 
    if (SLJIT_UNLIKELY(elem_size == 3)) {
        SLJIT_ASSERT(type & SLJIT_SIMD_FLOAT);
 
        if (src & SLJIT_MEM) {
            FAIL_IF(emit_fop_mem(compiler, FPU_LOAD | SLJIT_32, freg, src, srcw));
            src = freg;
        } else if (freg != src)
            FAIL_IF(push_inst(compiler, VORR | VD(freg) | VN(src) | VM(src)));
 
        freg += SLJIT_QUAD_OTHER_HALF(freg);
 
        if (freg != src)
            return push_inst(compiler, VORR | VD(freg) | VN(src) | VM(src));
        return SLJIT_SUCCESS;
    }
 
    if (src & SLJIT_MEM) {
        FAIL_IF(sljit_emit_simd_mem_offset(compiler, &src, srcw));
 
        ins = (sljit_ins)(elem_size << 6);
 
        if (reg_size == 4)
            ins |= (sljit_ins)1 << 5;
 
        return push_inst(compiler, VLD1_r | ins | VD(freg) | RN(src) | 0xf);
    }
 
    if (type & SLJIT_SIMD_FLOAT) {
        SLJIT_ASSERT(elem_size == 2);
        ins = ((sljit_ins)freg_ebit_map[src] << (16 + 2 + 1)) | ((sljit_ins)1 << (16 + 2));
 
        if (reg_size == 4)
            ins |= (sljit_ins)1 << 6;
 
        return push_inst(compiler, VDUP_s | ins | VD(freg) | (sljit_ins)freg_map[src]);
    }
 
    if (src == SLJIT_IMM) {
        if (elem_size < 2)
            srcw &= ((sljit_sw)1 << (((sljit_sw)1 << elem_size) << 3)) - 1;
 
        imm = simd_get_imm(elem_size, (sljit_uw)srcw);
 
        if (imm != ~(sljit_ins)0) {
            if (reg_size == 4)
                imm |= (sljit_ins)1 << 6;
 
            return push_inst(compiler, VMOV_i | imm | VD(freg));
        }
 
        FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)srcw));
        src = TMP_REG1;
    }
 
    switch (elem_size) {
    case 0:
        ins = 1 << 22;
        break;
    case 1:
        ins = 1 << 5;
        break;
    default:
        ins = 0;
        break;
    }
 
    if (reg_size == 4)
        ins |= (sljit_ins)1 << 21;
 
    return push_inst(compiler, VDUP | ins | VN(freg) | RD(src));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_lane_mov(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg, sljit_s32 lane_index,
    sljit_s32 srcdst, sljit_sw srcdstw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_ins ins;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_lane_mov(compiler, type, freg, lane_index, srcdst, srcdstw));
 
    ADJUST_LOCAL_OFFSET(srcdst, srcdstw);
 
    if (reg_size != 3 && reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if ((type & SLJIT_SIMD_FLOAT) ? (elem_size < 2 || elem_size > 3) : (elem_size > 2))
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (reg_size == 4)
        freg = simd_get_quad_reg_index(freg);
 
    if (type & SLJIT_SIMD_LANE_ZERO) {
        ins = (reg_size == 3) ? 0 : ((sljit_ins)1 << 6);
 
        if (type & SLJIT_SIMD_FLOAT) {
            if (elem_size == 3 && !(srcdst & SLJIT_MEM)) {
                if (lane_index == 1)
                    freg += SLJIT_QUAD_OTHER_HALF(freg);
 
                if (srcdst != freg)
                    FAIL_IF(push_inst(compiler, VORR | VD(freg) | VN(srcdst) | VM(srcdst)));
 
                freg += SLJIT_QUAD_OTHER_HALF(freg);
                return push_inst(compiler, VMOV_i | VD(freg));
            }
 
            if (srcdst == freg || (elem_size == 3 && srcdst == (freg + SLJIT_QUAD_OTHER_HALF(freg)))) {
                FAIL_IF(push_inst(compiler, VORR | ins | VD(TMP_FREG2) | VN(freg) | VM(freg)));
                srcdst = TMP_FREG2;
                srcdstw = 0;
            }
        }
 
        FAIL_IF(push_inst(compiler, VMOV_i | ins | VD(freg)));
    }
 
    if (reg_size == 4 && lane_index >= (0x8 >> elem_size)) {
        lane_index -= (0x8 >> elem_size);
        freg += SLJIT_QUAD_OTHER_HALF(freg);
    }
 
    if (srcdst & SLJIT_MEM) {
        if (elem_size == 3)
            return emit_fop_mem(compiler, ((type & SLJIT_SIMD_STORE) ? 0 : FPU_LOAD) | SLJIT_32, freg, srcdst, srcdstw);
 
        FAIL_IF(sljit_emit_simd_mem_offset(compiler, &srcdst, srcdstw));
 
        lane_index = lane_index << elem_size;
        ins = (sljit_ins)((elem_size << 10) | (lane_index << 5));
        return push_inst(compiler, ((type & SLJIT_SIMD_STORE) ? VST1_s : VLD1_s) | ins | VD(freg) | RN(srcdst) | 0xf);
    }
 
    if (type & SLJIT_SIMD_FLOAT) {
        if (elem_size == 3) {
            if (type & SLJIT_SIMD_STORE)
                return push_inst(compiler, VORR | VD(srcdst) | VN(freg) | VM(freg));
            return push_inst(compiler, VMOV_F32 | SLJIT_32 | VD(freg) | VM(srcdst));
        }
 
        if (type & SLJIT_SIMD_STORE) {
            if (freg_ebit_map[freg] == 0) {
                if (lane_index == 1)
                    freg = SLJIT_F64_SECOND(freg);
 
                return push_inst(compiler, VMOV_F32 | VD(srcdst) | VM(freg));
            }
 
            FAIL_IF(push_inst(compiler, VMOV_s | (1 << 20) | ((sljit_ins)lane_index << 21) | VN(freg) | RD(TMP_REG1)));
            return push_inst(compiler, VMOV | VN(srcdst) | RD(TMP_REG1));
        }
 
        FAIL_IF(push_inst(compiler, VMOV | (1 << 20) | VN(srcdst) | RD(TMP_REG1)));
        return push_inst(compiler, VMOV_s | ((sljit_ins)lane_index << 21) | VN(freg) | RD(TMP_REG1));
    }
 
    if (srcdst == SLJIT_IMM) {
        if (elem_size < 2)
            srcdstw &= ((sljit_sw)1 << (((sljit_sw)1 << elem_size) << 3)) - 1;
 
        FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)srcdstw));
        srcdst = TMP_REG1;
    }
 
    if (elem_size == 0)
        ins = 0x400000;
    else if (elem_size == 1)
        ins = 0x20;
    else
        ins = 0;
 
    lane_index = lane_index << elem_size;
    ins |= (sljit_ins)(((lane_index & 0x4) << 19) | ((lane_index & 0x3) << 5));
 
    if (type & SLJIT_SIMD_STORE) {
        ins |= (1 << 20);
 
        if (elem_size < 2 && !(type & SLJIT_SIMD_LANE_SIGNED))
            ins |= (1 << 23);
    }
 
    return push_inst(compiler, VMOV_s | ins | VN(freg) | RD(srcdst));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_lane_replicate(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 src, sljit_s32 src_lane_index)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_ins ins;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_lane_replicate(compiler, type, freg, src, src_lane_index));
 
    if (reg_size != 3 && reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if ((type & SLJIT_SIMD_FLOAT) && (elem_size < 2 || elem_size > 3))
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (reg_size == 4) {
        freg = simd_get_quad_reg_index(freg);
        src = simd_get_quad_reg_index(src);
 
        if (src_lane_index >= (0x8 >> elem_size)) {
            src_lane_index -= (0x8 >> elem_size);
            src += SLJIT_QUAD_OTHER_HALF(src);
        }
    }
 
    if (elem_size == 3) {
        if (freg != src)
            FAIL_IF(push_inst(compiler, VORR | VD(freg) | VN(src) | VM(src)));
 
        freg += SLJIT_QUAD_OTHER_HALF(freg);
 
        if (freg != src)
            return push_inst(compiler, VORR | VD(freg) | VN(src) | VM(src));
        return SLJIT_SUCCESS;
    }
 
    ins = ((((sljit_ins)src_lane_index << 1) | 1) << (16 + elem_size));
 
    if (reg_size == 4)
        ins |= (sljit_ins)1 << 6;
 
    return push_inst(compiler, VDUP_s | ins | VD(freg) | VM(src));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_extend(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 src, sljit_sw srcw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_s32 elem2_size = SLJIT_SIMD_GET_ELEM2_SIZE(type);
    sljit_s32 dst_reg;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_extend(compiler, type, freg, src, srcw));
 
    ADJUST_LOCAL_OFFSET(src, srcw);
 
    if (reg_size != 3 && reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if ((type & SLJIT_SIMD_FLOAT) && (elem_size != 2 || elem2_size != 3))
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (reg_size == 4)
        freg = simd_get_quad_reg_index(freg);
 
    if (src & SLJIT_MEM) {
        FAIL_IF(sljit_emit_simd_mem_offset(compiler, &src, srcw));
        if (reg_size == 4 && elem2_size - elem_size == 1)
            FAIL_IF(push_inst(compiler, VLD1 | (0x7 << 8) | VD(freg) | RN(src) | 0xf));
        else
            FAIL_IF(push_inst(compiler, VLD1_s | (sljit_ins)((reg_size - elem2_size + elem_size) << 10) | VD(freg) | RN(src) | 0xf));
        src = freg;
    } else if (reg_size == 4)
        src = simd_get_quad_reg_index(src);
 
    if (!(type & SLJIT_SIMD_FLOAT)) {
        dst_reg = (reg_size == 4) ? freg : TMP_FREG2;
 
        do {
            FAIL_IF(push_inst(compiler, VSHLL | ((type & SLJIT_SIMD_EXTEND_SIGNED) ? 0 : (1 << 24))
                | ((sljit_ins)1 << (19 + elem_size)) | VD(dst_reg) | VM(src)));
            src = dst_reg;
        } while (++elem_size < elem2_size);
 
        if (dst_reg == TMP_FREG2)
            return push_inst(compiler, VORR | VD(freg) | VN(TMP_FREG2) | VM(TMP_FREG2));
        return SLJIT_SUCCESS;
    }
 
    /* No SIMD variant, must use VFP instead. */
    SLJIT_ASSERT(reg_size == 4);
 
    if (freg == src) {
        freg += SLJIT_QUAD_OTHER_HALF(freg);
        FAIL_IF(push_inst(compiler, VCVT_F64_F32 | VD(freg) | VM(src) | 0x20));
        freg += SLJIT_QUAD_OTHER_HALF(freg);
        return push_inst(compiler, VCVT_F64_F32 | VD(freg) | VM(src));
    }
 
    FAIL_IF(push_inst(compiler, VCVT_F64_F32 | VD(freg) | VM(src)));
    freg += SLJIT_QUAD_OTHER_HALF(freg);
    return push_inst(compiler, VCVT_F64_F32 | VD(freg) | VM(src) | 0x20);
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_sign(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 freg,
    sljit_s32 dst, sljit_sw dstw)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_ins ins, imms;
    sljit_s32 dst_r;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_sign(compiler, type, freg, dst, dstw));
 
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    if (reg_size != 3 && reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if ((type & SLJIT_SIMD_FLOAT) && (elem_size < 2 || elem_size > 3))
        return SLJIT_ERR_UNSUPPORTED;
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    switch (elem_size) {
    case 0:
        imms = 0x243219;
        ins = VSHR | (1 << 24) | (0x9 << 16);
        break;
    case 1:
        imms = (reg_size == 4) ? 0x243219 : 0x2231;
        ins = VSHR | (1 << 24) | (0x11 << 16);
        break;
    case 2:
        imms = (reg_size == 4) ? 0x2231 : 0x21;
        ins = VSHR | (1 << 24) | (0x21 << 16);
        break;
    default:
        imms = 0x21;
        ins = VSHR | (1 << 24) | (0x1 << 16) | (1 << 7);
        break;
    }
 
    if (reg_size == 4) {
        freg = simd_get_quad_reg_index(freg);
        ins |= (sljit_ins)1 << 6;
    }
 
    SLJIT_ASSERT((freg_map[TMP_FREG2] & 0x1) == 0);
    FAIL_IF(push_inst(compiler, ins | VD(TMP_FREG2) | VM(freg)));
 
    if (reg_size == 4 && elem_size > 0)
        FAIL_IF(push_inst(compiler, VMOVN | ((sljit_ins)(elem_size - 1) << 18) | VD(TMP_FREG2) | VM(TMP_FREG2)));
 
    ins = (reg_size == 4 && elem_size == 0) ? (1 << 6) : 0;
 
    while (imms >= 0x100) {
        FAIL_IF(push_inst(compiler, VSRA | (1 << 24) | ins | ((imms & 0xff) << 16) | VD(TMP_FREG2) | VM(TMP_FREG2)));
        imms >>= 8;
    }
 
    FAIL_IF(push_inst(compiler, VSRA | (1 << 24) | ins | (1 << 7) | (imms << 16) | VD(TMP_FREG2) | VM(TMP_FREG2)));
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
    FAIL_IF(push_inst(compiler, VMOV_s | (1 << 20) | (1 << 23) | (0x2 << 21) | RD(dst_r) | VN(TMP_FREG2)));
 
    if (reg_size == 4 && elem_size == 0) {
        SLJIT_ASSERT(freg_map[TMP_FREG2] + 1 == freg_map[TMP_FREG1]);
        FAIL_IF(push_inst(compiler, VMOV_s | (1 << 20) | (1 << 23) | (0x2 << 21) | RD(TMP_REG2) | VN(TMP_FREG1)));
        FAIL_IF(push_inst(compiler, ORR | RD(dst_r) | RN(dst_r) | RM(TMP_REG2) | (0x8 << 7)));
    }
 
    if (dst_r == TMP_REG1)
        return emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2);
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_op2(struct sljit_compiler *compiler, sljit_s32 type,
    sljit_s32 dst_freg, sljit_s32 src1_freg, sljit_s32 src2_freg)
{
    sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type);
    sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type);
    sljit_ins ins = 0;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_simd_op2(compiler, type, dst_freg, src1_freg, src2_freg));
 
    if (reg_size != 3 && reg_size != 4)
        return SLJIT_ERR_UNSUPPORTED;
 
    if ((type & SLJIT_SIMD_FLOAT) && (elem_size < 2 || elem_size > 3))
        return SLJIT_ERR_UNSUPPORTED;
 
    switch (SLJIT_SIMD_GET_OPCODE(type)) {
    case SLJIT_SIMD_OP2_AND:
        ins = VAND;
        break;
    case SLJIT_SIMD_OP2_OR:
        ins = VORR;
        break;
    case SLJIT_SIMD_OP2_XOR:
        ins = VEOR;
        break;
    }
 
    if (type & SLJIT_SIMD_TEST)
        return SLJIT_SUCCESS;
 
    if (reg_size == 4) {
        dst_freg = simd_get_quad_reg_index(dst_freg);
        src1_freg = simd_get_quad_reg_index(src1_freg);
        src2_freg = simd_get_quad_reg_index(src2_freg);
        ins |= (sljit_ins)1 << 6;
    }
 
    return push_inst(compiler, ins | VD(dst_freg) | VN(src1_freg) | VM(src2_freg));
}
 
#undef FPU_LOAD
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_atomic_load(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 dst_reg,
    sljit_s32 mem_reg)
{
    sljit_u32 ins;
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_atomic_load(compiler, op, dst_reg, mem_reg));
 
    switch (GET_OPCODE(op)) {
    case SLJIT_MOV_U8:
        ins = LDREXB;
        break;
    case SLJIT_MOV_U16:
        ins = LDREXH;
        break;
    default:
        ins = LDREX;
        break;
    }
 
    return push_inst(compiler, ins | RN(mem_reg) | RD(dst_reg));
}
 
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_atomic_store(struct sljit_compiler *compiler, sljit_s32 op,
    sljit_s32 src_reg,
    sljit_s32 mem_reg,
    sljit_s32 temp_reg)
{
    sljit_u32 ins;
 
    /* temp_reg == mem_reg is undefined so use another temp register */
    SLJIT_UNUSED_ARG(temp_reg);
 
    CHECK_ERROR();
    CHECK(check_sljit_emit_atomic_store(compiler, op, src_reg, mem_reg, temp_reg));
 
    switch (GET_OPCODE(op)) {
    case SLJIT_MOV_U8:
        ins = STREXB;
        break;
    case SLJIT_MOV_U16:
        ins = STREXH;
        break;
    default:
        ins = STREX;
        break;
    }
 
    FAIL_IF(push_inst(compiler, ins | RN(mem_reg) | RD(TMP_REG1) | RM(src_reg)));
    if (op & SLJIT_SET_ATOMIC_STORED)
        return push_inst(compiler, CMP | SET_FLAGS | SRC2_IMM | RN(TMP_REG1));
 
    return SLJIT_SUCCESS;
}
 
SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value)
{
    struct sljit_const *const_;
    sljit_s32 dst_r;
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value));
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const));
    PTR_FAIL_IF(!const_);
    set_const(const_, compiler);
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2;
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    PTR_FAIL_IF(push_inst_with_unique_literal(compiler,
        EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, dst_r, TMP_PC, 0), (sljit_ins)init_value));
    compiler->patches++;
#else /* !SLJIT_CONFIG_ARM_V6 */
    PTR_FAIL_IF(emit_imm(compiler, dst_r, init_value));
#endif /* SLJIT_CONFIG_ARM_V6 */
 
    if (dst & SLJIT_MEM)
        PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1));
    return const_;
}
 
SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_mov_addr(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
{
    struct sljit_jump *jump;
    sljit_s32 dst_r;
 
    CHECK_ERROR_PTR();
    CHECK_PTR(check_sljit_emit_mov_addr(compiler, dst, dstw));
    ADJUST_LOCAL_OFFSET(dst, dstw);
 
    dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2;
 
#if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6)
    PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, dst_r, TMP_PC, 0), 0));
    compiler->patches++;
#else /* !SLJIT_CONFIG_ARM_V6 */
    PTR_FAIL_IF(push_inst(compiler, RD(dst_r)));
#endif /* SLJIT_CONFIG_ARM_V6 */
 
    jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump));
    PTR_FAIL_IF(!jump);
    set_mov_addr(jump, compiler, 1);
 
#if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
    compiler->size += 1;
#endif /* SLJIT_CONFIG_ARM_V7 */
 
    if (dst & SLJIT_MEM)
        PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1));
    return jump;
}
 
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
{
    set_jump_addr(addr, executable_offset, new_target, 1);
}
 
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
{
    set_const_value(addr, executable_offset, (sljit_uw)new_constant, 1);
}