/*
* 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.
*/
SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void)
{
#ifdef __SOFTFP__
return "ARM-Thumb2" SLJIT_CPUINFO " ABI:softfp";
#else
return "ARM-Thumb2" SLJIT_CPUINFO " ABI:hardfp";
#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)
/* 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 + 3] = {
0, 0, 1, 2, 3, 4, 5, 6, 7
};
#define COPY_BITS(src, from, to, bits) \
((from >= to ? (src >> (from - to)) : (src << (to - from))) & (((1 << bits) - 1) << to))
/* Thumb16 encodings. */
#define RD3(rd) (reg_map[rd])
#define RN3(rn) (reg_map[rn] << 3)
#define RM3(rm) (reg_map[rm] << 6)
#define RDN3(rdn) (reg_map[rdn] << 8)
#define IMM3(imm) (imm << 6)
#define IMM8(imm) (imm)
/* Thumb16 helpers. */
#define SET_REGS44(rd, rn) \
((reg_map[rn] << 3) | (reg_map[rd] & 0x7) | ((reg_map[rd] & 0x8) << 4))
#define IS_2_LO_REGS(reg1, reg2) \
(reg_map[reg1] <= 7 && reg_map[reg2] <= 7)
#define IS_3_LO_REGS(reg1, reg2, reg3) \
(reg_map[reg1] <= 7 && reg_map[reg2] <= 7 && reg_map[reg3] <= 7)
/* Thumb32 encodings. */
#define RD4(rd) (reg_map[rd] << 8)
#define RN4(rn) (reg_map[rn] << 16)
#define RM4(rm) (reg_map[rm])
#define RT4(rt) (reg_map[rt] << 12)
#define DD4(dd) (freg_map[dd] << 12)
#define DN4(dn) (freg_map[dn] << 16)
#define DM4(dm) (freg_map[dm])
#define IMM5(imm) \
(COPY_BITS(imm, 2, 12, 3) | ((imm & 0x3) << 6))
#define IMM12(imm) \
(COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))
/* --------------------------------------------------------------------- */
/* Instrucion forms */
/* --------------------------------------------------------------------- */
/* dot '.' changed to _
I immediate form (possibly followed by number of immediate bits). */
#define ADCI 0xf1400000
#define ADCS 0x4140
#define ADC_W 0xeb400000
#define ADD 0x4400
#define ADDS 0x1800
#define ADDSI3 0x1c00
#define ADDSI8 0x3000
#define ADD_W 0xeb000000
#define ADDWI 0xf2000000
#define ADD_SP 0xb000
#define ADD_W 0xeb000000
#define ADD_WI 0xf1000000
#define ANDI 0xf0000000
#define ANDS 0x4000
#define AND_W 0xea000000
#define ASRS 0x4100
#define ASRSI 0x1000
#define ASR_W 0xfa40f000
#define ASR_WI 0xea4f0020
#define BCC 0xd000
#define BICI 0xf0200000
#define BKPT 0xbe00
#define BLX 0x4780
#define BX 0x4700
#define CLZ 0xfab0f080
#define CMNI_W 0xf1100f00
#define CMP 0x4280
#define CMPI 0x2800
#define CMPI_W 0xf1b00f00
#define CMP_X 0x4500
#define CMP_W 0xebb00f00
#define EORI 0xf0800000
#define EORS 0x4040
#define EOR_W 0xea800000
#define IT 0xbf00
#define LDRI 0xf8500800
#define LSLS 0x4080
#define LSLSI 0x0000
#define LSL_W 0xfa00f000
#define LSL_WI 0xea4f0000
#define LSRS 0x40c0
#define LSRSI 0x0800
#define LSR_W 0xfa20f000
#define LSR_WI 0xea4f0010
#define MOV 0x4600
#define MOVS 0x0000
#define MOVSI 0x2000
#define MOVT 0xf2c00000
#define MOVW 0xf2400000
#define MOV_W 0xea4f0000
#define MOV_WI 0xf04f0000
#define MUL 0xfb00f000
#define MVNS 0x43c0
#define MVN_W 0xea6f0000
#define MVN_WI 0xf06f0000
#define NOP 0xbf00
#define ORNI 0xf0600000
#define ORRI 0xf0400000
#define ORRS 0x4300
#define ORR_W 0xea400000
#define POP 0xbc00
#define POP_W 0xe8bd0000
#define PUSH 0xb400
#define PUSH_W 0xe92d0000
#define RSB_WI 0xf1c00000
#define RSBSI 0x4240
#define SBCI 0xf1600000
#define SBCS 0x4180
#define SBC_W 0xeb600000
#define SDIV 0xfb90f0f0
#define SMULL 0xfb800000
#define STR_SP 0x9000
#define SUBS 0x1a00
#define SUBSI3 0x1e00
#define SUBSI8 0x3800
#define SUB_W 0xeba00000
#define SUBWI 0xf2a00000
#define SUB_SP 0xb080
#define SUB_WI 0xf1a00000
#define SXTB 0xb240
#define SXTB_W 0xfa4ff080
#define SXTH 0xb200
#define SXTH_W 0xfa0ff080
#define TST 0x4200
#define UDIV 0xfbb0f0f0
#define UMULL 0xfba00000
#define UXTB 0xb2c0
#define UXTB_W 0xfa5ff080
#define UXTH 0xb280
#define UXTH_W 0xfa1ff080
#define VABS_F32 0xeeb00ac0
#define VADD_F32 0xee300a00
#define VCMP_F32 0xeeb40a40
#define VCVT_F32_S32 0xeeb80ac0
#define VCVT_F64_F32 0xeeb70ac0
#define VCVT_S32_F32 0xeebd0ac0
#define VDIV_F32 0xee800a00
#define VMOV_F32 0xeeb00a40
#define VMOV 0xee000a10
#define VMOV2 0xec400a10
#define VMRS 0xeef1fa10
#define VMUL_F32 0xee200a00
#define VNEG_F32 0xeeb10a40
#define VSTR_F32 0xed000a00
#define VSUB_F32 0xee300a40
static sljit_s32 push_inst16(struct sljit_compiler *compiler, sljit_ins inst)
{
sljit_u16 *ptr;
SLJIT_ASSERT(!(inst & 0xffff0000));
ptr = (sljit_u16*)ensure_buf(compiler, sizeof(sljit_u16));
FAIL_IF(!ptr);
*ptr = inst;
compiler->size++;
return SLJIT_SUCCESS;
}
static sljit_s32 push_inst32(struct sljit_compiler *compiler, sljit_ins inst)
{
sljit_u16 *ptr = (sljit_u16*)ensure_buf(compiler, sizeof(sljit_ins));
FAIL_IF(!ptr);
*ptr++ = inst >> 16;
*ptr = inst;
compiler->size += 2;
return SLJIT_SUCCESS;
}
static SLJIT_INLINE sljit_s32 emit_imm32_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_uw imm)
{
FAIL_IF(push_inst32(compiler, MOVW | RD4(dst)
| COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
return push_inst32(compiler, MOVT | RD4(dst)
| COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
}
static SLJIT_INLINE void modify_imm32_const(sljit_u16 *inst, sljit_uw new_imm)
{
sljit_s32 dst = inst[1] & 0x0f00;
SLJIT_ASSERT(((inst[0] & 0xfbf0) == (MOVW >> 16)) && ((inst[2] & 0xfbf0) == (MOVT >> 16)) && dst == (inst[3] & 0x0f00));
inst[0] = (MOVW >> 16) | COPY_BITS(new_imm, 12, 0, 4) | COPY_BITS(new_imm, 11, 10, 1);
inst[1] = dst | COPY_BITS(new_imm, 8, 12, 3) | (new_imm & 0xff);
inst[2] = (MOVT >> 16) | COPY_BITS(new_imm, 12 + 16, 0, 4) | COPY_BITS(new_imm, 11 + 16, 10, 1);
inst[3] = dst | COPY_BITS(new_imm, 8 + 16, 12, 3) | ((new_imm & 0xff0000) >> 16);
}
static SLJIT_INLINE sljit_s32 detect_jump_type(struct sljit_jump *jump, sljit_u16 *code_ptr, sljit_u16 *code, sljit_sw executable_offset)
{
sljit_sw diff;
if (jump->flags & SLJIT_REWRITABLE_JUMP)
return 0;
if (jump->flags & JUMP_ADDR) {
/* Branch to ARM code is not optimized yet. */
if (!(jump->u.target & 0x1))
return 0;
diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2) - executable_offset) >> 1;
}
else {
SLJIT_ASSERT(jump->flags & JUMP_LABEL);
diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2)) >> 1;
}
if (jump->flags & IS_COND) {
SLJIT_ASSERT(!(jump->flags & IS_BL));
if (diff <= 127 && diff >= -128) {
jump->flags |= PATCH_TYPE1;
return 5;
}
if (diff <= 524287 && diff >= -524288) {
jump->flags |= PATCH_TYPE2;
return 4;
}
/* +1 comes from the prefix IT instruction. */
diff--;
if (diff <= 8388607 && diff >= -8388608) {
jump->flags |= PATCH_TYPE3;
return 3;
}
}
else if (jump->flags & IS_BL) {
if (diff <= 8388607 && diff >= -8388608) {
jump->flags |= PATCH_BL;
return 3;
}
}
else {
if (diff <= 1023 && diff >= -1024) {
jump->flags |= PATCH_TYPE4;
return 4;
}
if (diff <= 8388607 && diff >= -8388608) {
jump->flags |= PATCH_TYPE5;
return 3;
}
}
return 0;
}
static SLJIT_INLINE void set_jump_instruction(struct sljit_jump *jump, sljit_sw executable_offset)
{
sljit_s32 type = (jump->flags >> 4) & 0xf;
sljit_sw diff;
sljit_u16 *jump_inst;
sljit_s32 s, j1, j2;
if (SLJIT_UNLIKELY(type == 0)) {
modify_imm32_const((sljit_u16*)jump->addr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target);
return;
}
if (jump->flags & JUMP_ADDR) {
SLJIT_ASSERT(jump->u.target & 0x1);
diff = ((sljit_sw)jump->u.target - (sljit_sw)(jump->addr + sizeof(sljit_u32)) - executable_offset) >> 1;
}
else {
SLJIT_ASSERT(jump->u.label->addr & 0x1);
diff = ((sljit_sw)(jump->u.label->addr) - (sljit_sw)(jump->addr + sizeof(sljit_u32)) - executable_offset) >> 1;
}
jump_inst = (sljit_u16*)jump->addr;
switch (type) {
case 1:
/* Encoding T1 of 'B' instruction */
SLJIT_ASSERT(diff <= 127 && diff >= -128 && (jump->flags & IS_COND));
jump_inst[0] = 0xd000 | (jump->flags & 0xf00) | (diff & 0xff);
return;
case 2:
/* Encoding T3 of 'B' instruction */
SLJIT_ASSERT(diff <= 524287 && diff >= -524288 && (jump->flags & IS_COND));
jump_inst[0] = 0xf000 | COPY_BITS(jump->flags, 8, 6, 4) | COPY_BITS(diff, 11, 0, 6) | COPY_BITS(diff, 19, 10, 1);
jump_inst[1] = 0x8000 | COPY_BITS(diff, 17, 13, 1) | COPY_BITS(diff, 18, 11, 1) | (diff & 0x7ff);
return;
case 3:
SLJIT_ASSERT(jump->flags & IS_COND);
*jump_inst++ = IT | ((jump->flags >> 4) & 0xf0) | 0x8;
diff--;
type = 5;
break;
case 4:
/* Encoding T2 of 'B' instruction */
SLJIT_ASSERT(diff <= 1023 && diff >= -1024 && !(jump->flags & IS_COND));
jump_inst[0] = 0xe000 | (diff & 0x7ff);
return;
}
SLJIT_ASSERT(diff <= 8388607 && diff >= -8388608);
/* Really complex instruction form for branches. */
s = (diff >> 23) & 0x1;
j1 = (~(diff >> 22) ^ s) & 0x1;
j2 = (~(diff >> 21) ^ s) & 0x1;
jump_inst[0] = 0xf000 | (s << 10) | COPY_BITS(diff, 11, 0, 10);
jump_inst[1] = (j1 << 13) | (j2 << 11) | (diff & 0x7ff);
/* The others have a common form. */
if (type == 5) /* Encoding T4 of 'B' instruction */
jump_inst[1] |= 0x9000;
else if (type == 6) /* Encoding T1 of 'BL' instruction */
jump_inst[1] |= 0xd000;
else
SLJIT_UNREACHABLE();
}
SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler)
{
struct sljit_memory_fragment *buf;
sljit_u16 *code;
sljit_u16 *code_ptr;
sljit_u16 *buf_ptr;
sljit_u16 *buf_end;
sljit_uw half_count;
sljit_sw executable_offset;
struct sljit_label *label;
struct sljit_jump *jump;
struct sljit_const *const_;
CHECK_ERROR_PTR();
CHECK_PTR(check_sljit_generate_code(compiler));
reverse_buf(compiler);
code = (sljit_u16*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_u16));
PTR_FAIL_WITH_EXEC_IF(code);
buf = compiler->buf;
code_ptr = code;
half_count = 0;
executable_offset = SLJIT_EXEC_OFFSET(code);
label = compiler->labels;
jump = compiler->jumps;
const_ = compiler->consts;
do {
buf_ptr = (sljit_u16*)buf->memory;
buf_end = buf_ptr + (buf->used_size >> 1);
do {
*code_ptr = *buf_ptr++;
/* These structures are ordered by their address. */
SLJIT_ASSERT(!label || label->size >= half_count);
SLJIT_ASSERT(!jump || jump->addr >= half_count);
SLJIT_ASSERT(!const_ || const_->addr >= half_count);
if (label && label->size == half_count) {
label->addr = ((sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset)) | 0x1;
label->size = code_ptr - code;
label = label->next;
}
if (jump && jump->addr == half_count) {
jump->addr = (sljit_uw)code_ptr - ((jump->flags & IS_COND) ? 10 : 8);
code_ptr -= detect_jump_type(jump, code_ptr, code, executable_offset);
jump = jump->next;
}
if (const_ && const_->addr == half_count) {
const_->addr = (sljit_uw)code_ptr;
const_ = const_->next;
}
code_ptr ++;
half_count ++;
} while (buf_ptr < buf_end);
buf = buf->next;
} while (buf);
if (label && label->size == half_count) {
label->addr = ((sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset)) | 0x1;
label->size = code_ptr - code;
label = label->next;
}
SLJIT_ASSERT(!label);
SLJIT_ASSERT(!jump);
SLJIT_ASSERT(!const_);
SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size);
jump = compiler->jumps;
while (jump) {
set_jump_instruction(jump, executable_offset);
jump = jump->next;
}
compiler->error = SLJIT_ERR_COMPILED;
compiler->executable_offset = executable_offset;
compiler->executable_size = (code_ptr - code) * sizeof(sljit_u16);
code = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(code, executable_offset);
code_ptr = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
SLJIT_CACHE_FLUSH(code, code_ptr);
/* Set thumb mode flag. */
return (void*)((sljit_uw)code | 0x1);
}
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type)
{
switch (feature_type) {
case SLJIT_HAS_FPU:
#ifdef SLJIT_IS_FPU_AVAILABLE
return SLJIT_IS_FPU_AVAILABLE;
#else
/* Available by default. */
return 1;
#endif
case SLJIT_HAS_CLZ:
case SLJIT_HAS_CMOV:
return 1;
default:
return 0;
}
}
/* --------------------------------------------------------------------- */
/* Core code generator functions. */
/* --------------------------------------------------------------------- */
#define INVALID_IMM 0x80000000
static sljit_uw get_imm(sljit_uw imm)
{
/* Thumb immediate form. */
sljit_s32 counter;
if (imm <= 0xff)
return imm;
if ((imm & 0xffff) == (imm >> 16)) {
/* Some special cases. */
if (!(imm & 0xff00))
return (1 << 12) | (imm & 0xff);
if (!(imm & 0xff))
return (2 << 12) | ((imm >> 8) & 0xff);
if ((imm & 0xff00) == ((imm & 0xff) << 8))
return (3 << 12) | (imm & 0xff);
}
/* Assembly optimization: count leading zeroes? */
counter = 8;
if (!(imm & 0xffff0000)) {
counter += 16;
imm <<= 16;
}
if (!(imm & 0xff000000)) {
counter += 8;
imm <<= 8;
}
if (!(imm & 0xf0000000)) {
counter += 4;
imm <<= 4;
}
if (!(imm & 0xc0000000)) {
counter += 2;
imm <<= 2;
}
if (!(imm & 0x80000000)) {
counter += 1;
imm <<= 1;
}
/* Since imm >= 128, this must be true. */
SLJIT_ASSERT(counter <= 31);
if (imm & 0x00ffffff)
return INVALID_IMM; /* Cannot be encoded. */
return ((imm >> 24) & 0x7f) | COPY_BITS(counter, 4, 26, 1) | COPY_BITS(counter, 1, 12, 3) | COPY_BITS(counter, 0, 7, 1);
}
static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst, sljit_uw imm)
{
sljit_uw tmp;
/* MOVS cannot be used since it destroy flags. */
if (imm >= 0x10000) {
tmp = get_imm(imm);
if (tmp != INVALID_IMM)
return push_inst32(compiler, MOV_WI | RD4(dst) | tmp);
tmp = get_imm(~imm);
if (tmp != INVALID_IMM)
return push_inst32(compiler, MVN_WI | RD4(dst) | tmp);
}
/* set low 16 bits, set hi 16 bits to 0. */
FAIL_IF(push_inst32(compiler, MOVW | RD4(dst)
| COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)));
/* set hi 16 bit if needed. */
if (imm >= 0x10000)
return push_inst32(compiler, MOVT | RD4(dst)
| COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16));
return SLJIT_SUCCESS;
}
#define ARG1_IMM 0x0010000
#define ARG2_IMM 0x0020000
/* SET_FLAGS must be 0x100000 as it is also the value of S bit (can be used for optimization). */
#define SET_FLAGS 0x0100000
#define UNUSED_RETURN 0x0200000
static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 dst, sljit_uw arg1, sljit_uw arg2)
{
/* dst must be register, TMP_REG1
arg1 must be register, imm
arg2 must be register, imm */
sljit_s32 reg;
sljit_uw imm, nimm;
if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) {
/* Both are immediates, no temporaries are used. */
flags &= ~ARG1_IMM;
FAIL_IF(load_immediate(compiler, TMP_REG1, arg1));
arg1 = TMP_REG1;
}
if (flags & (ARG1_IMM | ARG2_IMM)) {
reg = (flags & ARG2_IMM) ? arg1 : arg2;
imm = (flags & ARG2_IMM) ? arg2 : arg1;
switch (flags & 0xffff) {
case SLJIT_CLZ:
case SLJIT_MUL:
/* No form with immediate operand. */
break;
case SLJIT_MOV:
SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG2);
return load_immediate(compiler, dst, imm);
case SLJIT_NOT:
if (!(flags & SET_FLAGS))
return load_immediate(compiler, dst, ~imm);
/* Since the flags should be set, we just fallback to the register mode.
Although some clever things could be done here, "NOT IMM" does not worth the efforts. */
break;
case SLJIT_ADD:
nimm = -imm;
if (IS_2_LO_REGS(reg, dst)) {
if (imm <= 0x7)
return push_inst16(compiler, ADDSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
if (nimm <= 0x7)
return push_inst16(compiler, SUBSI3 | IMM3(nimm) | RD3(dst) | RN3(reg));
if (reg == dst) {
if (imm <= 0xff)
return push_inst16(compiler, ADDSI8 | IMM8(imm) | RDN3(dst));
if (nimm <= 0xff)
return push_inst16(compiler, SUBSI8 | IMM8(nimm) | RDN3(dst));
}
}
if (!(flags & SET_FLAGS)) {
if (imm <= 0xfff)
return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(imm));
if (nimm <= 0xfff)
return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(nimm));
}
nimm = get_imm(imm);
if (nimm != INVALID_IMM)
return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
nimm = get_imm(-imm);
if (nimm != INVALID_IMM)
return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
break;
case SLJIT_ADDC:
imm = get_imm(imm);
if (imm != INVALID_IMM)
return push_inst32(compiler, ADCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
break;
case SLJIT_SUB:
/* SUB operation can be replaced by ADD because of the negative carry flag. */
if (flags & ARG1_IMM) {
if (imm == 0 && IS_2_LO_REGS(reg, dst))
return push_inst16(compiler, RSBSI | RD3(dst) | RN3(reg));
imm = get_imm(imm);
if (imm != INVALID_IMM)
return push_inst32(compiler, RSB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
break;
}
if (flags & UNUSED_RETURN) {
if (imm <= 0xff && reg_map[reg] <= 7)
return push_inst16(compiler, CMPI | IMM8(imm) | RDN3(reg));
nimm = get_imm(imm);
if (nimm != INVALID_IMM)
return push_inst32(compiler, CMPI_W | RN4(reg) | nimm);
nimm = get_imm(-imm);
if (nimm != INVALID_IMM)
return push_inst32(compiler, CMNI_W | RN4(reg) | nimm);
}
nimm = -imm;
if (IS_2_LO_REGS(reg, dst)) {
if (imm <= 0x7)
return push_inst16(compiler, SUBSI3 | IMM3(imm) | RD3(dst) | RN3(reg));
if (nimm <= 0x7)
return push_inst16(compiler, ADDSI3 | IMM3(nimm) | RD3(dst) | RN3(reg));
if (reg == dst) {
if (imm <= 0xff)
return push_inst16(compiler, SUBSI8 | IMM8(imm) | RDN3(dst));
if (nimm <= 0xff)
return push_inst16(compiler, ADDSI8 | IMM8(nimm) | RDN3(dst));
}
}
if (!(flags & SET_FLAGS)) {
if (imm <= 0xfff)
return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(imm));
if (nimm <= 0xfff)
return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(nimm));
}
nimm = get_imm(imm);
if (nimm != INVALID_IMM)
return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
nimm = get_imm(-imm);
if (nimm != INVALID_IMM)
return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
break;
case SLJIT_SUBC:
if (flags & ARG1_IMM)
break;
imm = get_imm(imm);
if (imm != INVALID_IMM)
return push_inst32(compiler, SBCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
break;
case SLJIT_AND:
nimm = get_imm(imm);
if (nimm != INVALID_IMM)
return push_inst32(compiler, ANDI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
imm = get_imm(imm);
if (imm != INVALID_IMM)
return push_inst32(compiler, BICI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
break;
case SLJIT_OR:
nimm = get_imm(imm);
if (nimm != INVALID_IMM)
return push_inst32(compiler, ORRI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm);
imm = get_imm(imm);
if (imm != INVALID_IMM)
return push_inst32(compiler, ORNI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
break;
case SLJIT_XOR:
imm = get_imm(imm);
if (imm != INVALID_IMM)
return push_inst32(compiler, EORI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm);
break;
case SLJIT_SHL:
case SLJIT_LSHR:
case SLJIT_ASHR:
if (flags & ARG1_IMM)
break;
imm &= 0x1f;
if (imm == 0) {
if (!(flags & SET_FLAGS))
return push_inst16(compiler, MOV | SET_REGS44(dst, reg));
if (IS_2_LO_REGS(dst, reg))
return push_inst16(compiler, MOVS | RD3(dst) | RN3(reg));
return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(dst) | RM4(reg));
}
switch (flags & 0xffff) {
case SLJIT_SHL:
if (IS_2_LO_REGS(dst, reg))
return push_inst16(compiler, LSLSI | RD3(dst) | RN3(reg) | (imm << 6));
return push_inst32(compiler, LSL_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
case SLJIT_LSHR:
if (IS_2_LO_REGS(dst, reg))
return push_inst16(compiler, LSRSI | RD3(dst) | RN3(reg) | (imm << 6));
return push_inst32(compiler, LSR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
default: /* SLJIT_ASHR */
if (IS_2_LO_REGS(dst, reg))
return push_inst16(compiler, ASRSI | RD3(dst) | RN3(reg) | (imm << 6));
return push_inst32(compiler, ASR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm));
}
default:
SLJIT_UNREACHABLE();
break;
}
if (flags & ARG2_IMM) {
imm = arg2;
arg2 = (arg1 == TMP_REG1) ? TMP_REG2 : TMP_REG1;
FAIL_IF(load_immediate(compiler, arg2, imm));
}
else {
imm = arg1;
arg1 = (arg2 == TMP_REG1) ? TMP_REG2 : TMP_REG1;
FAIL_IF(load_immediate(compiler, arg1, imm));
}
SLJIT_ASSERT(arg1 != arg2);
}
/* Both arguments are registers. */
switch (flags & 0xffff) {
case SLJIT_MOV:
case SLJIT_MOV_U32:
case SLJIT_MOV_S32:
case SLJIT_MOV_P:
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
if (dst == arg2)
return SLJIT_SUCCESS;
return push_inst16(compiler, MOV | SET_REGS44(dst, arg2));
case SLJIT_MOV_U8:
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
if (IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, UXTB | RD3(dst) | RN3(arg2));
return push_inst32(compiler, UXTB_W | RD4(dst) | RM4(arg2));
case SLJIT_MOV_S8:
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
if (IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, SXTB | RD3(dst) | RN3(arg2));
return push_inst32(compiler, SXTB_W | RD4(dst) | RM4(arg2));
case SLJIT_MOV_U16:
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
if (IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, UXTH | RD3(dst) | RN3(arg2));
return push_inst32(compiler, UXTH_W | RD4(dst) | RM4(arg2));
case SLJIT_MOV_S16:
SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2);
if (IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, SXTH | RD3(dst) | RN3(arg2));
return push_inst32(compiler, SXTH_W | RD4(dst) | RM4(arg2));
case SLJIT_NOT:
SLJIT_ASSERT(arg1 == TMP_REG2);
if (IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, MVNS | RD3(dst) | RN3(arg2));
return push_inst32(compiler, MVN_W | (flags & SET_FLAGS) | RD4(dst) | RM4(arg2));
case SLJIT_CLZ:
SLJIT_ASSERT(arg1 == TMP_REG2);
FAIL_IF(push_inst32(compiler, CLZ | RN4(arg2) | RD4(dst) | RM4(arg2)));
return SLJIT_SUCCESS;
case SLJIT_ADD:
if (IS_3_LO_REGS(dst, arg1, arg2))
return push_inst16(compiler, ADDS | RD3(dst) | RN3(arg1) | RM3(arg2));
if (dst == arg1 && !(flags & SET_FLAGS))
return push_inst16(compiler, ADD | SET_REGS44(dst, arg2));
return push_inst32(compiler, ADD_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
case SLJIT_ADDC:
if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, ADCS | RD3(dst) | RN3(arg2));
return push_inst32(compiler, ADC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
case SLJIT_SUB:
if (flags & UNUSED_RETURN) {
if (IS_2_LO_REGS(arg1, arg2))
return push_inst16(compiler, CMP | RD3(arg1) | RN3(arg2));
return push_inst16(compiler, CMP_X | SET_REGS44(arg1, arg2));
}
if (IS_3_LO_REGS(dst, arg1, arg2))
return push_inst16(compiler, SUBS | RD3(dst) | RN3(arg1) | RM3(arg2));
return push_inst32(compiler, SUB_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
case SLJIT_SUBC:
if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, SBCS | RD3(dst) | RN3(arg2));
return push_inst32(compiler, SBC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
case SLJIT_MUL:
if (!(flags & SET_FLAGS))
return push_inst32(compiler, MUL | RD4(dst) | RN4(arg1) | RM4(arg2));
SLJIT_ASSERT(dst != TMP_REG2);
FAIL_IF(push_inst32(compiler, SMULL | RT4(dst) | RD4(TMP_REG2) | RN4(arg1) | RM4(arg2)));
/* cmp TMP_REG2, dst asr #31. */
return push_inst32(compiler, CMP_W | RN4(TMP_REG2) | 0x70e0 | RM4(dst));
case SLJIT_AND:
if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, ANDS | RD3(dst) | RN3(arg2));
if ((flags & UNUSED_RETURN) && IS_2_LO_REGS(arg1, arg2))
return push_inst16(compiler, TST | RD3(arg1) | RN3(arg2));
return push_inst32(compiler, AND_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
case SLJIT_OR:
if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, ORRS | RD3(dst) | RN3(arg2));
return push_inst32(compiler, ORR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
case SLJIT_XOR:
if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, EORS | RD3(dst) | RN3(arg2));
return push_inst32(compiler, EOR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
case SLJIT_SHL:
if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, LSLS | RD3(dst) | RN3(arg2));
return push_inst32(compiler, LSL_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
case SLJIT_LSHR:
if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, LSRS | RD3(dst) | RN3(arg2));
return push_inst32(compiler, LSR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
case SLJIT_ASHR:
if (dst == arg1 && IS_2_LO_REGS(dst, arg2))
return push_inst16(compiler, ASRS | RD3(dst) | RN3(arg2));
return push_inst32(compiler, ASR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2));
}
SLJIT_UNREACHABLE();
return SLJIT_SUCCESS;
}
#define STORE 0x01
#define SIGNED 0x02
#define WORD_SIZE 0x00
#define BYTE_SIZE 0x04
#define HALF_SIZE 0x08
#define PRELOAD 0x0c
#define IS_WORD_SIZE(flags) (!(flags & (BYTE_SIZE | HALF_SIZE)))
#define OFFSET_CHECK(imm, shift) (!(argw & ~(imm << shift)))
/*
1st letter:
w = word
b = byte
h = half
2nd letter:
s = signed
u = unsigned
3rd letter:
l = load
s = store
*/
static const sljit_ins sljit_mem16[12] = {
/* w u l */ 0x5800 /* ldr */,
/* w u s */ 0x5000 /* str */,
/* w s l */ 0x5800 /* ldr */,
/* w s s */ 0x5000 /* str */,
/* b u l */ 0x5c00 /* ldrb */,
/* b u s */ 0x5400 /* strb */,
/* b s l */ 0x5600 /* ldrsb */,
/* b s s */ 0x5400 /* strb */,
/* h u l */ 0x5a00 /* ldrh */,
/* h u s */ 0x5200 /* strh */,
/* h s l */ 0x5e00 /* ldrsh */,
/* h s s */ 0x5200 /* strh */,
};
static const sljit_ins sljit_mem16_imm5[12] = {
/* w u l */ 0x6800 /* ldr imm5 */,
/* w u s */ 0x6000 /* str imm5 */,
/* w s l */ 0x6800 /* ldr imm5 */,
/* w s s */ 0x6000 /* str imm5 */,
/* b u l */ 0x7800 /* ldrb imm5 */,
/* b u s */ 0x7000 /* strb imm5 */,
/* b s l */ 0x0000 /* not allowed */,
/* b s s */ 0x7000 /* strb imm5 */,
/* h u l */ 0x8800 /* ldrh imm5 */,
/* h u s */ 0x8000 /* strh imm5 */,
/* h s l */ 0x0000 /* not allowed */,
/* h s s */ 0x8000 /* strh imm5 */,
};
#define MEM_IMM8 0xc00
#define MEM_IMM12 0x800000
static const sljit_ins sljit_mem32[13] = {
/* w u l */ 0xf8500000 /* ldr.w */,
/* w u s */ 0xf8400000 /* str.w */,
/* w s l */ 0xf8500000 /* ldr.w */,
/* w s s */ 0xf8400000 /* str.w */,
/* b u l */ 0xf8100000 /* ldrb.w */,
/* b u s */ 0xf8000000 /* strb.w */,
/* b s l */ 0xf9100000 /* ldrsb.w */,
/* b s s */ 0xf8000000 /* strb.w */,
/* h u l */ 0xf8300000 /* ldrh.w */,
/* h u s */ 0xf8200000 /* strsh.w */,
/* h s l */ 0xf9300000 /* ldrsh.w */,
/* h s s */ 0xf8200000 /* strsh.w */,
/* p u l */ 0xf8100000 /* pld */,
};
/* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */
static sljit_s32 emit_set_delta(struct sljit_compiler *compiler, sljit_s32 dst, sljit_s32 reg, sljit_sw value)
{
if (value >= 0) {
if (value <= 0xfff)
return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(value));
value = get_imm(value);
if (value != INVALID_IMM)
return push_inst32(compiler, ADD_WI | RD4(dst) | RN4(reg) | value);
}
else {
value = -value;
if (value <= 0xfff)
return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(value));
value = get_imm(value);
if (value != INVALID_IMM)
return push_inst32(compiler, SUB_WI | RD4(dst) | RN4(reg) | value);
}
return SLJIT_ERR_UNSUPPORTED;
}
static SLJIT_INLINE 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_s32 other_r;
sljit_uw tmp;
SLJIT_ASSERT(arg & SLJIT_MEM);
SLJIT_ASSERT((arg & REG_MASK) != tmp_reg);
arg &= ~SLJIT_MEM;
if (SLJIT_UNLIKELY(!(arg & REG_MASK))) {
tmp = get_imm(argw & ~0xfff);
if (tmp != INVALID_IMM) {
FAIL_IF(push_inst32(compiler, MOV_WI | RD4(tmp_reg) | tmp));
return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(tmp_reg) | (argw & 0xfff));
}
FAIL_IF(load_immediate(compiler, tmp_reg, argw));
if (IS_2_LO_REGS(reg, tmp_reg) && sljit_mem16_imm5[flags])
return push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(tmp_reg));
return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(tmp_reg));
}
if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
argw &= 0x3;
other_r = OFFS_REG(arg);
arg &= 0xf;
if (!argw && IS_3_LO_REGS(reg, arg, other_r))
return push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(other_r));
return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(other_r) | (argw << 4));
}
if (argw > 0xfff) {
tmp = get_imm(argw & ~0xfff);
if (tmp != INVALID_IMM) {
push_inst32(compiler, ADD_WI | RD4(tmp_reg) | RN4(arg) | tmp);
arg = tmp_reg;
argw = argw & 0xfff;
}
}
else if (argw < -0xff) {
tmp = get_imm(-argw & ~0xff);
if (tmp != INVALID_IMM) {
push_inst32(compiler, SUB_WI | RD4(tmp_reg) | RN4(arg) | tmp);
arg = tmp_reg;
argw = -(-argw & 0xff);
}
}
if (IS_2_LO_REGS(reg, arg) && sljit_mem16_imm5[flags]) {
tmp = 3;
if (IS_WORD_SIZE(flags)) {
if (OFFSET_CHECK(0x1f, 2))
tmp = 2;
}
else if (flags & BYTE_SIZE)
{
if (OFFSET_CHECK(0x1f, 0))
tmp = 0;
}
else {
SLJIT_ASSERT(flags & HALF_SIZE);
if (OFFSET_CHECK(0x1f, 1))
tmp = 1;
}
if (tmp < 3)
return push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(arg) | (argw << (6 - tmp)));
}
else if (SLJIT_UNLIKELY(arg == SLJIT_SP) && IS_WORD_SIZE(flags) && OFFSET_CHECK(0xff, 2) && reg_map[reg] <= 7) {
/* SP based immediate. */
return push_inst16(compiler, STR_SP | ((flags & STORE) ? 0 : 0x800) | RDN3(reg) | (argw >> 2));
}
if (argw >= 0 && argw <= 0xfff)
return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw);
else if (argw < 0 && argw >= -0xff)
return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | -argw);
SLJIT_ASSERT(arg != tmp_reg);
FAIL_IF(load_immediate(compiler, tmp_reg, argw));
if (IS_3_LO_REGS(reg, arg, tmp_reg))
return push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(tmp_reg));
return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(tmp_reg));
}
/* --------------------------------------------------------------------- */
/* Entry, exit */
/* --------------------------------------------------------------------- */
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_s32 args, size, i, tmp;
sljit_ins push = 0;
#ifdef _WIN32
sljit_uw imm;
#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);
tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
for (i = SLJIT_S0; i >= tmp; i--)
push |= 1 << reg_map[i];
for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--)
push |= 1 << reg_map[i];
FAIL_IF((push & 0xff00)
? push_inst32(compiler, PUSH_W | (1 << 14) | push)
: push_inst16(compiler, PUSH | (1 << 8) | push));
/* Stack must be aligned to 8 bytes: (LR, R4) */
size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1);
local_size = ((size + local_size + 7) & ~7) - size;
compiler->local_size = local_size;
#ifdef _WIN32
if (local_size >= 256) {
if (local_size > 4096)
imm = get_imm(4096);
else
imm = get_imm(local_size & ~0xff);
SLJIT_ASSERT(imm != INVALID_IMM);
FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(SLJIT_SP) | imm));
}
#else
if (local_size > 0) {
if (local_size <= (127 << 2))
FAIL_IF(push_inst16(compiler, SUB_SP | (local_size >> 2)));
else
FAIL_IF(emit_op_imm(compiler, SLJIT_SUB | ARG2_IMM, SLJIT_SP, SLJIT_SP, local_size));
}
#endif
args = get_arg_count(arg_types);
if (args >= 1)
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S0, SLJIT_R0)));
if (args >= 2)
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S1, SLJIT_R1)));
if (args >= 3)
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S2, SLJIT_R2)));
#ifdef _WIN32
if (local_size >= 256) {
if (local_size > 4096) {
imm = get_imm(4096);
SLJIT_ASSERT(imm != INVALID_IMM);
if (local_size < 4 * 4096) {
if (local_size > 2 * 4096) {
FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm));
local_size -= 4096;
}
if (local_size > 2 * 4096) {
FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm));
local_size -= 4096;
}
FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
local_size -= 4096;
SLJIT_ASSERT(local_size > 0);
}
else {
FAIL_IF(load_immediate(compiler, SLJIT_R3, (local_size >> 12) - 1));
FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm));
SLJIT_ASSERT(reg_map[SLJIT_R3] < 7);
FAIL_IF(push_inst16(compiler, SUBSI8 | RDN3(SLJIT_R3) | 1));
FAIL_IF(push_inst16(compiler, BCC | (0x1 << 8) /* not-equal */ | (-7 & 0xff)));
local_size &= 0xfff;
if (local_size != 0)
FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1)));
}
if (local_size >= 256) {
imm = get_imm(local_size & ~0xff);
SLJIT_ASSERT(imm != INVALID_IMM);
FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm));
}
}
local_size &= 0xff;
FAIL_IF(push_inst32(compiler, LDRI | 0x400 | (local_size > 0 ? 0x100 : 0) | RT4(TMP_REG2) | RN4(TMP_REG1) | local_size));
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_SP, TMP_REG1)));
}
else if (local_size > 0)
FAIL_IF(push_inst32(compiler, LDRI | 0x500 | RT4(TMP_REG1) | RN4(SLJIT_SP) | local_size));
#endif
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, 1);
compiler->local_size = ((size + local_size + 7) & ~7) - size;
return SLJIT_SUCCESS;
}
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw)
{
sljit_s32 i, tmp;
sljit_ins pop = 0;
CHECK_ERROR();
CHECK(check_sljit_emit_return(compiler, op, src, srcw));
FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
if (compiler->local_size > 0) {
if (compiler->local_size <= (127 << 2))
FAIL_IF(push_inst16(compiler, ADD_SP | (compiler->local_size >> 2)));
else
FAIL_IF(emit_op_imm(compiler, SLJIT_ADD | ARG2_IMM, SLJIT_SP, SLJIT_SP, compiler->local_size));
}
tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
for (i = SLJIT_S0; i >= tmp; i--)
pop |= 1 << reg_map[i];
for (i = compiler->scratches; i >= SLJIT_FIRST_SAVED_REG; i--)
pop |= 1 << reg_map[i];
return (pop & 0xff00)
? push_inst32(compiler, POP_W | (1 << 15) | pop)
: push_inst16(compiler, POP | (1 << 8) | pop);
}
/* --------------------------------------------------------------------- */
/* Operators */
/* --------------------------------------------------------------------- */
#if !(defined __ARM_FEATURE_IDIV) && !(defined __ARM_ARCH_EXT_IDIV__)
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _WIN32
extern unsigned long long __rt_udiv(unsigned int denominator, unsigned int numerator);
extern long long __rt_sdiv(int denominator, int numerator);
#elif defined(__GNUC__)
extern unsigned int __aeabi_uidivmod(unsigned int numerator, int unsigned denominator);
extern int __aeabi_idivmod(int numerator, int denominator);
#else
#error "Software divmod functions are needed"
#endif
#ifdef __cplusplus
}
#endif
#endif /* !__ARM_FEATURE_IDIV && !__ARM_ARCH_EXT_IDIV__ */
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op)
{
#if !(defined __ARM_FEATURE_IDIV) && !(defined __ARM_ARCH_EXT_IDIV__)
sljit_sw saved_reg_list[3];
sljit_sw saved_reg_count;
#endif
CHECK_ERROR();
CHECK(check_sljit_emit_op0(compiler, op));
op = GET_OPCODE(op);
switch (op) {
case SLJIT_BREAKPOINT:
return push_inst16(compiler, BKPT);
case SLJIT_NOP:
return push_inst16(compiler, NOP);
case SLJIT_LMUL_UW:
case SLJIT_LMUL_SW:
return push_inst32(compiler, (op == SLJIT_LMUL_UW ? UMULL : SMULL)
| (reg_map[SLJIT_R1] << 8)
| (reg_map[SLJIT_R0] << 12)
| (reg_map[SLJIT_R0] << 16)
| reg_map[SLJIT_R1]);
#if (defined __ARM_FEATURE_IDIV) || (defined __ARM_ARCH_EXT_IDIV__)
case SLJIT_DIVMOD_UW:
case SLJIT_DIVMOD_SW:
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG1, SLJIT_R0)));
FAIL_IF(push_inst32(compiler, (op == SLJIT_DIVMOD_UW ? UDIV : SDIV) | RD4(SLJIT_R0) | RN4(SLJIT_R0) | RM4(SLJIT_R1)));
FAIL_IF(push_inst32(compiler, MUL | RD4(SLJIT_R1) | RN4(SLJIT_R0) | RM4(SLJIT_R1)));
return push_inst32(compiler, SUB_W | RD4(SLJIT_R1) | RN4(TMP_REG1) | RM4(SLJIT_R1));
case SLJIT_DIV_UW:
case SLJIT_DIV_SW:
return push_inst32(compiler, (op == SLJIT_DIV_UW ? UDIV : SDIV) | RD4(SLJIT_R0) | RN4(SLJIT_R0) | RM4(SLJIT_R1));
#else /* !__ARM_FEATURE_IDIV && !__ARM_ARCH_EXT_IDIV__ */
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_inst32(compiler, 0xf84d0d00 | (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_inst16(compiler, 0x9001 | (saved_reg_list[1] << 8) /* str rX, [sp, #4] */));
}
if (saved_reg_count >= 3) {
SLJIT_ASSERT(saved_reg_list[2] < 8);
FAIL_IF(push_inst16(compiler, 0x9002 | (saved_reg_list[2] << 8) /* str rX, [sp, #8] */));
}
}
#ifdef _WIN32
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG1, SLJIT_R0)));
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_R0, SLJIT_R1)));
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_R1, TMP_REG1)));
FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
((op | 0x2) == SLJIT_DIV_UW ? SLJIT_FUNC_OFFSET(__rt_udiv) : SLJIT_FUNC_OFFSET(__rt_sdiv))));
#elif defined(__GNUC__)
FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM,
((op | 0x2) == SLJIT_DIV_UW ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__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_inst16(compiler, 0x9802 | (saved_reg_list[2] << 8) /* ldr rX, [sp, #8] */));
}
if (saved_reg_count >= 2) {
SLJIT_ASSERT(saved_reg_list[1] < 8);
FAIL_IF(push_inst16(compiler, 0x9801 | (saved_reg_list[1] << 8) /* ldr rX, [sp, #4] */));
}
return push_inst32(compiler, 0xf85d0b00 | (saved_reg_count >= 3 ? 16 : 8)
| (saved_reg_list[0] << 12) /* ldr rX, [sp], #8/16 */);
}
return SLJIT_SUCCESS;
#endif /* __ARM_FEATURE_IDIV || __ARM_ARCH_EXT_IDIV__ */
}
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)
{
sljit_s32 dst_r, flags;
sljit_s32 op_flags = GET_ALL_FLAGS(op);
CHECK_ERROR();
CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw));
ADJUST_LOCAL_OFFSET(dst, dstw);
ADJUST_LOCAL_OFFSET(src, srcw);
if (dst == SLJIT_UNUSED && !HAS_FLAGS(op)) {
/* Since TMP_PC has index 15, IS_2_LO_REGS and IS_3_LO_REGS checks always fail. */
if (op <= SLJIT_MOV_P && (src & SLJIT_MEM))
return emit_op_mem(compiler, PRELOAD, TMP_PC, src, srcw, TMP_REG1);
return SLJIT_SUCCESS;
}
dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1;
op = GET_OPCODE(op);
if (op >= SLJIT_MOV && op <= SLJIT_MOV_P) {
switch (op) {
case SLJIT_MOV:
case SLJIT_MOV_U32:
case SLJIT_MOV_S32:
case SLJIT_MOV_P:
flags = WORD_SIZE;
break;
case SLJIT_MOV_U8:
flags = BYTE_SIZE;
if (src & SLJIT_IMM)
srcw = (sljit_u8)srcw;
break;
case SLJIT_MOV_S8:
flags = BYTE_SIZE | SIGNED;
if (src & SLJIT_IMM)
srcw = (sljit_s8)srcw;
break;
case SLJIT_MOV_U16:
flags = HALF_SIZE;
if (src & SLJIT_IMM)
srcw = (sljit_u16)srcw;
break;
case SLJIT_MOV_S16:
flags = HALF_SIZE | SIGNED;
if (src & SLJIT_IMM)
srcw = (sljit_s16)srcw;
break;
default:
SLJIT_UNREACHABLE();
flags = 0;
break;
}
if (src & SLJIT_IMM)
FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG2, srcw));
else if (src & SLJIT_MEM) {
FAIL_IF(emit_op_mem(compiler, flags, dst_r, src, srcw, TMP_REG1));
} else {
if (dst_r != TMP_REG1)
return emit_op_imm(compiler, op, dst_r, TMP_REG2, src);
dst_r = src;
}
if (!(dst & SLJIT_MEM))
return SLJIT_SUCCESS;
return emit_op_mem(compiler, flags | STORE, dst_r, dst, dstw, TMP_REG2);
}
if (op == SLJIT_NEG) {
#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
|| (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
compiler->skip_checks = 1;
#endif
return sljit_emit_op2(compiler, SLJIT_SUB | op_flags, dst, dstw, SLJIT_IMM, 0, src, srcw);
}
flags = HAS_FLAGS(op_flags) ? SET_FLAGS : 0;
if (src & SLJIT_MEM) {
FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src, srcw, TMP_REG1));
src = TMP_REG1;
}
emit_op_imm(compiler, flags | op, dst_r, TMP_REG2, src);
if (SLJIT_UNLIKELY(dst & SLJIT_MEM))
return emit_op_mem(compiler, flags | STORE, dst_r, dst, dstw, TMP_REG2);
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 dst_reg, flags, src2_reg;
CHECK_ERROR();
CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w));
ADJUST_LOCAL_OFFSET(dst, dstw);
ADJUST_LOCAL_OFFSET(src1, src1w);
ADJUST_LOCAL_OFFSET(src2, src2w);
if (dst == SLJIT_UNUSED && !HAS_FLAGS(op))
return SLJIT_SUCCESS;
dst_reg = SLOW_IS_REG(dst) ? dst : TMP_REG1;
flags = HAS_FLAGS(op) ? SET_FLAGS : 0;
if (src1 & SLJIT_IMM)
flags |= ARG1_IMM;
else if (src1 & SLJIT_MEM) {
emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src1, src1w, TMP_REG1);
src1w = TMP_REG1;
}
else
src1w = src1;
if (src2 & SLJIT_IMM)
flags |= ARG2_IMM;
else if (src2 & SLJIT_MEM) {
src2_reg = (!(flags & ARG1_IMM) && (src1w == TMP_REG1)) ? TMP_REG2 : TMP_REG1;
emit_op_mem(compiler, WORD_SIZE, src2_reg, src2, src2w, src2_reg);
src2w = src2_reg;
}
else
src2w = src2;
if (dst == SLJIT_UNUSED)
flags |= UNUSED_RETURN;
emit_op_imm(compiler, flags | GET_OPCODE(op), dst_reg, src1w, src2w);
if (!(dst & SLJIT_MEM))
return SLJIT_SUCCESS;
return emit_op_mem(compiler, WORD_SIZE | STORE, dst_reg, dst, dstw, TMP_REG2);
}
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 reg)
{
CHECK_REG_INDEX(check_sljit_get_register_index(reg));
return reg_map[reg];
}
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_float_register_index(sljit_s32 reg)
{
CHECK_REG_INDEX(check_sljit_get_float_register_index(reg));
return (freg_map[reg] << 1);
}
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler,
void *instruction, sljit_s32 size)
{
CHECK_ERROR();
CHECK(check_sljit_emit_op_custom(compiler, instruction, size));
if (size == 2)
return push_inst16(compiler, *(sljit_u16*)instruction);
return push_inst32(compiler, *(sljit_ins*)instruction);
}
/* --------------------------------------------------------------------- */
/* Floating point operators */
/* --------------------------------------------------------------------- */
#define FPU_LOAD (1 << 20)
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_sw inst = VSTR_F32 | (flags & (SLJIT_F32_OP | FPU_LOAD));
SLJIT_ASSERT(arg & SLJIT_MEM);
/* Fast loads and stores. */
if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) {
FAIL_IF(push_inst32(compiler, ADD_W | RD4(TMP_REG1) | RN4(arg & REG_MASK) | RM4(OFFS_REG(arg)) | ((argw & 0x3) << 6)));
arg = SLJIT_MEM | TMP_REG1;
argw = 0;
}
if ((arg & REG_MASK) && (argw & 0x3) == 0) {
if (!(argw & ~0x3fc))
return push_inst32(compiler, inst | 0x800000 | RN4(arg & REG_MASK) | DD4(reg) | (argw >> 2));
if (!(-argw & ~0x3fc))
return push_inst32(compiler, inst | RN4(arg & REG_MASK) | DD4(reg) | (-argw >> 2));
}
if (arg & REG_MASK) {
if (emit_set_delta(compiler, TMP_REG1, arg & REG_MASK, argw) != SLJIT_ERR_UNSUPPORTED) {
FAIL_IF(compiler->error);
return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg));
}
imm = get_imm(argw & ~0x3fc);
if (imm != INVALID_IMM) {
FAIL_IF(push_inst32(compiler, ADD_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm));
return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2));
}
imm = get_imm(-argw & ~0x3fc);
if (imm != INVALID_IMM) {
argw = -argw;
FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm));
return push_inst32(compiler, inst | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2));
}
}
FAIL_IF(load_immediate(compiler, TMP_REG1, argw));
if (arg & REG_MASK)
FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG1, (arg & REG_MASK))));
return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg));
}
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_F32_OP;
if (src & SLJIT_MEM) {
FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src, srcw));
src = TMP_FREG1;
}
FAIL_IF(push_inst32(compiler, VCVT_S32_F32 | (op & SLJIT_F32_OP) | DD4(TMP_FREG1) | DM4(src)));
if (FAST_IS_REG(dst))
return push_inst32(compiler, VMOV | (1 << 20) | RT4(dst) | DN4(TMP_FREG1));
/* Store the integer value from a VFP register. */
return emit_fop_mem(compiler, 0, TMP_FREG1, dst, dstw);
}
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)
{
sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
op ^= SLJIT_F32_OP;
if (FAST_IS_REG(src))
FAIL_IF(push_inst32(compiler, VMOV | RT4(src) | DN4(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, srcw));
FAIL_IF(push_inst32(compiler, VMOV | RT4(TMP_REG1) | DN4(TMP_FREG1)));
}
FAIL_IF(push_inst32(compiler, VCVT_F32_S32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(TMP_FREG1)));
if (dst & SLJIT_MEM)
return emit_fop_mem(compiler, (op & SLJIT_F32_OP), TMP_FREG1, dst, dstw);
return SLJIT_SUCCESS;
}
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_F32_OP;
if (src1 & SLJIT_MEM) {
emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src1, src1w);
src1 = TMP_FREG1;
}
if (src2 & SLJIT_MEM) {
emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w);
src2 = TMP_FREG2;
}
FAIL_IF(push_inst32(compiler, VCMP_F32 | (op & SLJIT_F32_OP) | DD4(src1) | DM4(src2)));
return push_inst32(compiler, VMRS);
}
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_F32_OP == 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_F32_OP;
if (src & SLJIT_MEM) {
emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, dst_r, src, srcw);
src = dst_r;
}
switch (GET_OPCODE(op)) {
case SLJIT_MOV_F64:
if (src != dst_r) {
if (dst_r != TMP_FREG1)
FAIL_IF(push_inst32(compiler, VMOV_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src)));
else
dst_r = src;
}
break;
case SLJIT_NEG_F64:
FAIL_IF(push_inst32(compiler, VNEG_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src)));
break;
case SLJIT_ABS_F64:
FAIL_IF(push_inst32(compiler, VABS_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src)));
break;
case SLJIT_CONV_F64_FROM_F32:
FAIL_IF(push_inst32(compiler, VCVT_F64_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src)));
op ^= SLJIT_F32_OP;
break;
}
if (dst & SLJIT_MEM)
return emit_fop_mem(compiler, (op & SLJIT_F32_OP), 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_F32_OP;
dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1;
if (src1 & SLJIT_MEM) {
emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src1, src1w);
src1 = TMP_FREG1;
}
if (src2 & SLJIT_MEM) {
emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w);
src2 = TMP_FREG2;
}
switch (GET_OPCODE(op)) {
case SLJIT_ADD_F64:
FAIL_IF(push_inst32(compiler, VADD_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
break;
case SLJIT_SUB_F64:
FAIL_IF(push_inst32(compiler, VSUB_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
break;
case SLJIT_MUL_F64:
FAIL_IF(push_inst32(compiler, VMUL_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
break;
case SLJIT_DIV_F64:
FAIL_IF(push_inst32(compiler, VDIV_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2)));
break;
}
if (!(dst & SLJIT_MEM))
return SLJIT_SUCCESS;
return emit_fop_mem(compiler, (op & SLJIT_F32_OP), TMP_FREG1, dst, dstw);
}
#undef FPU_LOAD
/* --------------------------------------------------------------------- */
/* Other instructions */
/* --------------------------------------------------------------------- */
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
{
CHECK_ERROR();
CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
ADJUST_LOCAL_OFFSET(dst, dstw);
SLJIT_ASSERT(reg_map[TMP_REG2] == 14);
if (FAST_IS_REG(dst))
return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG2));
/* Memory. */
return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, TMP_REG1);
}
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw)
{
CHECK_ERROR();
CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
ADJUST_LOCAL_OFFSET(src, srcw);
SLJIT_ASSERT(reg_map[TMP_REG2] == 14);
if (FAST_IS_REG(src))
FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG2, src)));
else
FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, src, srcw, TMP_REG2));
return push_inst16(compiler, BX | RN3(TMP_REG2));
}
/* --------------------------------------------------------------------- */
/* Conditional instructions */
/* --------------------------------------------------------------------- */
static sljit_uw get_cc(sljit_s32 type)
{
switch (type) {
case SLJIT_EQUAL:
case SLJIT_MUL_NOT_OVERFLOW:
case SLJIT_EQUAL_F64:
return 0x0;
case SLJIT_NOT_EQUAL:
case SLJIT_MUL_OVERFLOW:
case SLJIT_NOT_EQUAL_F64:
return 0x1;
case SLJIT_LESS:
case SLJIT_LESS_F64:
return 0x3;
case SLJIT_GREATER_EQUAL:
case SLJIT_GREATER_EQUAL_F64:
return 0x2;
case SLJIT_GREATER:
case SLJIT_GREATER_F64:
return 0x8;
case SLJIT_LESS_EQUAL:
case SLJIT_LESS_EQUAL_F64:
return 0x9;
case SLJIT_SIG_LESS:
return 0xb;
case SLJIT_SIG_GREATER_EQUAL:
return 0xa;
case SLJIT_SIG_GREATER:
return 0xc;
case SLJIT_SIG_LESS_EQUAL:
return 0xd;
case SLJIT_OVERFLOW:
case SLJIT_UNORDERED_F64:
return 0x6;
case SLJIT_NOT_OVERFLOW:
case SLJIT_ORDERED_F64:
return 0x7;
default: /* SLJIT_JUMP */
SLJIT_UNREACHABLE();
return 0xe;
}
}
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;
sljit_ins cc;
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;
PTR_FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
if (type < SLJIT_JUMP) {
jump->flags |= IS_COND;
cc = get_cc(type);
jump->flags |= cc << 8;
PTR_FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
}
jump->addr = compiler->size;
if (type <= SLJIT_JUMP)
PTR_FAIL_IF(push_inst16(compiler, BX | RN3(TMP_REG1)));
else {
jump->flags |= IS_BL;
PTR_FAIL_IF(push_inst16(compiler, BLX | RN3(TMP_REG1)));
}
return jump;
}
#ifdef __SOFTFP__
static sljit_s32 softfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src)
{
sljit_s32 stack_offset = 0;
sljit_s32 arg_count = 0;
sljit_s32 word_arg_offset = 0;
sljit_s32 float_arg_count = 0;
sljit_s32 types = 0;
sljit_s32 src_offset = 4 * sizeof(sljit_sw);
sljit_u8 offsets[4];
if (src && FAST_IS_REG(*src))
src_offset = reg_map[*src] * sizeof(sljit_sw);
arg_types >>= SLJIT_DEF_SHIFT;
while (arg_types) {
types = (types << SLJIT_DEF_SHIFT) | (arg_types & SLJIT_DEF_MASK);
switch (arg_types & SLJIT_DEF_MASK) {
case SLJIT_ARG_TYPE_F32:
offsets[arg_count] = (sljit_u8)stack_offset;
stack_offset += sizeof(sljit_f32);
arg_count++;
float_arg_count++;
break;
case SLJIT_ARG_TYPE_F64:
if (stack_offset & 0x7)
stack_offset += sizeof(sljit_sw);
offsets[arg_count] = (sljit_u8)stack_offset;
stack_offset += sizeof(sljit_f64);
arg_count++;
float_arg_count++;
break;
default:
offsets[arg_count] = (sljit_u8)stack_offset;
stack_offset += sizeof(sljit_sw);
arg_count++;
word_arg_offset += sizeof(sljit_sw);
break;
}
arg_types >>= SLJIT_DEF_SHIFT;
}
if (stack_offset > 16)
FAIL_IF(push_inst16(compiler, SUB_SP | (((stack_offset - 16) + 0x7) & ~0x7) >> 2));
SLJIT_ASSERT(reg_map[TMP_REG1] == 12);
/* Process arguments in reversed direction. */
while (types) {
switch (types & SLJIT_DEF_MASK) {
case SLJIT_ARG_TYPE_F32:
arg_count--;
float_arg_count--;
stack_offset = offsets[arg_count];
if (stack_offset < 16) {
if (src_offset == stack_offset) {
FAIL_IF(push_inst16(compiler, MOV | (src_offset << 1) | 4 | (1 << 7)));
*src = TMP_REG1;
}
FAIL_IF(push_inst32(compiler, VMOV | 0x100000 | (float_arg_count << 16) | (stack_offset << 10)));
} else
FAIL_IF(push_inst32(compiler, VSTR_F32 | 0x800000 | RN4(SLJIT_SP) | (float_arg_count << 12) | ((stack_offset - 16) >> 2)));
break;
case SLJIT_ARG_TYPE_F64:
arg_count--;
float_arg_count--;
stack_offset = offsets[arg_count];
SLJIT_ASSERT((stack_offset & 0x7) == 0);
if (stack_offset < 16) {
if (src_offset == stack_offset || src_offset == stack_offset + sizeof(sljit_sw)) {
FAIL_IF(push_inst16(compiler, MOV | (src_offset << 1) | 4 | (1 << 7)));
*src = TMP_REG1;
}
FAIL_IF(push_inst32(compiler, VMOV2 | 0x100000 | (stack_offset << 10) | ((stack_offset + sizeof(sljit_sw)) << 14) | float_arg_count));
} else
FAIL_IF(push_inst32(compiler, VSTR_F32 | 0x800100 | RN4(SLJIT_SP) | (float_arg_count << 12) | ((stack_offset - 16) >> 2)));
break;
default:
arg_count--;
word_arg_offset -= sizeof(sljit_sw);
stack_offset = offsets[arg_count];
SLJIT_ASSERT(stack_offset >= word_arg_offset);
if (stack_offset != word_arg_offset) {
if (stack_offset < 16) {
if (src_offset == stack_offset) {
FAIL_IF(push_inst16(compiler, MOV | (src_offset << 1) | 4 | (1 << 7)));
*src = TMP_REG1;
}
else if (src_offset == word_arg_offset) {
*src = 1 + (stack_offset >> 2);
src_offset = stack_offset;
}
FAIL_IF(push_inst16(compiler, MOV | (stack_offset >> 2) | (word_arg_offset << 1)));
} else
FAIL_IF(push_inst16(compiler, STR_SP | (word_arg_offset << 6) | ((stack_offset - 16) >> 2)));
}
break;
}
types >>= SLJIT_DEF_SHIFT;
}
return SLJIT_SUCCESS;
}
static sljit_s32 softfloat_post_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types)
{
sljit_s32 stack_size = 0;
if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F32)
FAIL_IF(push_inst32(compiler, VMOV | (0 << 16) | (0 << 12)));
if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F64)
FAIL_IF(push_inst32(compiler, VMOV2 | (1 << 16) | (0 << 12) | 0));
arg_types >>= SLJIT_DEF_SHIFT;
while (arg_types) {
switch (arg_types & SLJIT_DEF_MASK) {
case SLJIT_ARG_TYPE_F32:
stack_size += sizeof(sljit_f32);
break;
case SLJIT_ARG_TYPE_F64:
if (stack_size & 0x7)
stack_size += sizeof(sljit_sw);
stack_size += sizeof(sljit_f64);
break;
default:
stack_size += sizeof(sljit_sw);
break;
}
arg_types >>= SLJIT_DEF_SHIFT;
}
if (stack_size <= 16)
return SLJIT_SUCCESS;
return push_inst16(compiler, ADD_SP | ((((stack_size - 16) + 0x7) & ~0x7) >> 2));
}
#else
static sljit_s32 hardfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types)
{
sljit_u32 remap = 0;
sljit_u32 offset = 0;
sljit_u32 new_offset, mask;
/* Remove return value. */
arg_types >>= SLJIT_DEF_SHIFT;
while (arg_types) {
if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F32) {
new_offset = 0;
mask = 1;
while (remap & mask) {
new_offset++;
mask <<= 1;
}
remap |= mask;
if (offset != new_offset)
FAIL_IF(push_inst32(compiler, VMOV_F32 | DD4((new_offset >> 1) + 1)
| ((new_offset & 0x1) ? 0x400000 : 0) | DM4((offset >> 1) + 1)));
offset += 2;
}
else if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F64) {
new_offset = 0;
mask = 3;
while (remap & mask) {
new_offset += 2;
mask <<= 2;
}
remap |= mask;
if (offset != new_offset)
FAIL_IF(push_inst32(compiler, VMOV_F32 | SLJIT_F32_OP | DD4((new_offset >> 1) + 1) | DM4((offset >> 1) + 1)));
offset += 2;
}
arg_types >>= SLJIT_DEF_SHIFT;
}
return SLJIT_SUCCESS;
}
#endif
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;
#endif
CHECK_ERROR_PTR();
CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types));
#ifdef __SOFTFP__
PTR_FAIL_IF(softfloat_call_with_args(compiler, arg_types, NULL));
#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
|| (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
compiler->skip_checks = 1;
#endif
jump = sljit_emit_jump(compiler, type);
PTR_FAIL_IF(jump == NULL);
PTR_FAIL_IF(softfloat_post_call_with_args(compiler, arg_types));
return jump;
#else
PTR_FAIL_IF(hardfloat_call_with_args(compiler, arg_types));
#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
|| (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
compiler->skip_checks = 1;
#endif
return sljit_emit_jump(compiler, type);
#endif
}
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_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(src));
}
FAIL_IF(emit_op_mem(compiler, WORD_SIZE, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, src, srcw, TMP_REG1));
if (type >= SLJIT_FAST_CALL)
return push_inst16(compiler, BLX | RN3(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 = srcw;
FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0));
jump->addr = compiler->size;
return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(TMP_REG1));
}
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)
{
CHECK_ERROR();
CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw));
#ifdef __SOFTFP__
if (src & SLJIT_MEM) {
FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src, srcw, TMP_REG1));
src = TMP_REG1;
}
FAIL_IF(softfloat_call_with_args(compiler, arg_types, &src));
#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
|| (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
compiler->skip_checks = 1;
#endif
FAIL_IF(sljit_emit_ijump(compiler, type, src, srcw));
return softfloat_post_call_with_args(compiler, arg_types);
#else /* !__SOFTFP__ */
FAIL_IF(hardfloat_call_with_args(compiler, arg_types));
#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
|| (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
compiler->skip_checks = 1;
#endif
return sljit_emit_ijump(compiler, type, 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_r, flags = GET_ALL_FLAGS(op);
sljit_ins cc;
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(type & 0xff);
dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
if (op < SLJIT_ADD) {
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
if (reg_map[dst_r] > 7) {
FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 1));
FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 0));
} else {
/* The movsi (immediate) instruction does not set flags in IT block. */
FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 1));
FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 0));
}
if (!(dst & SLJIT_MEM))
return SLJIT_SUCCESS;
return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, TMP_REG2);
}
if (dst & SLJIT_MEM)
FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2));
if (op == SLJIT_AND) {
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4));
FAIL_IF(push_inst32(compiler, ANDI | RN4(dst_r) | RD4(dst_r) | 1));
FAIL_IF(push_inst32(compiler, ANDI | RN4(dst_r) | RD4(dst_r) | 0));
}
else {
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
FAIL_IF(push_inst32(compiler, ((op == SLJIT_OR) ? ORRI : EORI) | RN4(dst_r) | RD4(dst_r) | 1));
}
if (dst & SLJIT_MEM)
FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, TMP_REG2));
if (!(flags & SLJIT_SET_Z))
return SLJIT_SUCCESS;
/* The condition must always be set, even if the ORR/EORI is not executed above. */
return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(TMP_REG1) | RM4(dst_r));
}
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type,
sljit_s32 dst_reg,
sljit_s32 src, sljit_sw srcw)
{
sljit_uw cc, tmp;
CHECK_ERROR();
CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw));
dst_reg &= ~SLJIT_I32_OP;
cc = get_cc(type & 0xff);
if (!(src & SLJIT_IMM)) {
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
return push_inst16(compiler, MOV | SET_REGS44(dst_reg, src));
}
tmp = (sljit_uw) srcw;
if (tmp < 0x10000) {
/* set low 16 bits, set hi 16 bits to 0. */
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
return push_inst32(compiler, MOVW | RD4(dst_reg)
| COPY_BITS(tmp, 12, 16, 4) | COPY_BITS(tmp, 11, 26, 1) | COPY_BITS(tmp, 8, 12, 3) | (tmp & 0xff));
}
tmp = get_imm(srcw);
if (tmp != INVALID_IMM) {
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
return push_inst32(compiler, MOV_WI | RD4(dst_reg) | tmp);
}
tmp = get_imm(~srcw);
if (tmp != INVALID_IMM) {
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8));
return push_inst32(compiler, MVN_WI | RD4(dst_reg) | tmp);
}
FAIL_IF(push_inst16(compiler, IT | (cc << 4) | ((cc & 0x1) << 3) | 0x4));
tmp = (sljit_uw) srcw;
FAIL_IF(push_inst32(compiler, MOVW | RD4(dst_reg)
| COPY_BITS(tmp, 12, 16, 4) | COPY_BITS(tmp, 11, 26, 1) | COPY_BITS(tmp, 8, 12, 3) | (tmp & 0xff)));
return push_inst32(compiler, MOVT | RD4(dst_reg)
| COPY_BITS(tmp, 12 + 16, 16, 4) | COPY_BITS(tmp, 11 + 16, 26, 1) | COPY_BITS(tmp, 8 + 16, 12, 3) | ((tmp & 0xff0000) >> 16));
}
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;
sljit_ins inst;
CHECK_ERROR();
CHECK(check_sljit_emit_mem(compiler, type, reg, mem, memw));
if ((mem & OFFS_REG_MASK) || (memw > 255 && memw < -255))
return SLJIT_ERR_UNSUPPORTED;
if (type & SLJIT_MEM_SUPP)
return SLJIT_SUCCESS;
switch (type & 0xff) {
case SLJIT_MOV:
case SLJIT_MOV_U32:
case SLJIT_MOV_S32:
case SLJIT_MOV_P:
flags = WORD_SIZE;
break;
case SLJIT_MOV_U8:
flags = BYTE_SIZE;
break;
case SLJIT_MOV_S8:
flags = BYTE_SIZE | SIGNED;
break;
case SLJIT_MOV_U16:
flags = HALF_SIZE;
break;
case SLJIT_MOV_S16:
flags = HALF_SIZE | SIGNED;
break;
default:
SLJIT_UNREACHABLE();
flags = WORD_SIZE;
break;
}
if (type & SLJIT_MEM_STORE)
flags |= STORE;
inst = sljit_mem32[flags] | 0x900;
if (type & SLJIT_MEM_PRE)
inst |= 0x400;
if (memw >= 0)
inst |= 0x200;
else
memw = -memw;
return push_inst32(compiler, inst | RT4(reg) | RN4(mem & REG_MASK) | memw);
}
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_REG1;
PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, init_value));
if (dst & SLJIT_MEM)
PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw, TMP_REG2));
return const_;
}
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset)
{
sljit_u16 *inst = (sljit_u16*)addr;
modify_imm32_const(inst, new_target);
inst = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
SLJIT_CACHE_FLUSH(inst, inst + 4);
}
SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset)
{
sljit_u16 *inst = (sljit_u16*)addr;
modify_imm32_const(inst, new_constant);
inst = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset);
SLJIT_CACHE_FLUSH(inst, inst + 4);
}