| /* |
| * 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_V5 && SLJIT_CONFIG_ARM_V5) |
| return "ARMv5" SLJIT_CPUINFO ARM_ABI_INFO; |
| #else |
| #error "Internal error: Unknown ARM architecture" |
| #endif |
| } |
| |
| /* 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_uw*)(((sljit_uw)(ptr) + (CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1) & ~((CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1)) |
| #define MAX_DIFFERENCE(max_diff) \ |
| (((max_diff) / (sljit_s32)sizeof(sljit_uw)) - (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 + 3] = { |
| 0, 0, 1, 2, 3, 4, 5, 6, 7 |
| }; |
| |
| #define RM(rm) (reg_map[rm]) |
| #define RD(rd) (reg_map[rd] << 12) |
| #define RN(rn) (reg_map[rn] << 16) |
| |
| /* --------------------------------------------------------------------- */ |
| /* 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 BL 0xeb000000 |
| #define BLX 0xe12fff30 |
| #define BX 0xe12fff10 |
| #define CLZ 0xe16f0f10 |
| #define CMN 0xe1600000 |
| #define CMP 0xe1400000 |
| #define BKPT 0xe1200070 |
| #define EOR 0xe0200000 |
| #define MOV 0xe1a00000 |
| #define MUL 0xe0000090 |
| #define MVN 0xe1e00000 |
| #define NOP 0xe1a00000 |
| #define ORR 0xe1800000 |
| #define PUSH 0xe92d0000 |
| #define POP 0xe8bd0000 |
| #define RSB 0xe0600000 |
| #define RSC 0xe0e00000 |
| #define SBC 0xe0c00000 |
| #define SMULL 0xe0c00090 |
| #define SUB 0xe0400000 |
| #define UMULL 0xe0800090 |
| #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 |
| |
| #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| /* Arm v7 specific instructions. */ |
| #define MOVW 0xe3000000 |
| #define MOVT 0xe3400000 |
| #define SXTB 0xe6af0070 |
| #define SXTH 0xe6bf0070 |
| #define UXTB 0xe6ef0070 |
| #define UXTH 0xe6ff0070 |
| #endif |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| |
| static sljit_s32 push_cpool(struct sljit_compiler *compiler) |
| { |
| /* Pushing the constant pool into the instruction stream. */ |
| sljit_uw* 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_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| FAIL_IF(!inst); |
| compiler->size++; |
| *inst = 0xff000000 | compiler->cpool_fill; |
| |
| for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) { |
| inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 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_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 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_uw inst) |
| { |
| sljit_uw* 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_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| FAIL_IF(!ptr); |
| compiler->size++; |
| *ptr = inst; |
| return SLJIT_SUCCESS; |
| } |
| |
| static sljit_s32 push_inst_with_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal) |
| { |
| sljit_uw* 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 = 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_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 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_uw inst, sljit_uw literal) |
| { |
| sljit_uw* 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_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 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 & 0x0c0f0000) == 0x040f0000) { |
| diff = 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 + ind - 2) << 2; |
| SLJIT_ASSERT(diff <= 0xfff); |
| *last_pc_patch = (*last_pc_patch & ~0xfff) | diff; |
| } |
| else |
| *last_pc_patch = (*last_pc_patch & ~(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_s32 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 = (sljit_s32)cpool_start_address[cpool_current_index]; |
| else { |
| curr_patch = *first_patch; |
| prev_patch = NULL; |
| while (1) { |
| if (!curr_patch) { |
| value = (sljit_s32)cpool_start_address[cpool_current_index]; |
| break; |
| } |
| if ((sljit_uw)curr_patch->index == cpool_current_index) { |
| value = 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 (value >= 0) { |
| if ((sljit_uw)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 = value; |
| curr_patch->value = 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_uw inst) |
| { |
| sljit_uw* ptr; |
| |
| ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 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) | (imm & 0xfff))); |
| return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((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_V5 && SLJIT_CONFIG_ARM_V5) |
| if (jump->flags & IS_BL) |
| code_ptr--; |
| |
| if (jump->flags & JUMP_ADDR) |
| diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2) - executable_offset); |
| else { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| 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 (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 |
| if (jump->flags & JUMP_ADDR) |
| diff = ((sljit_sw)jump->u.target - (sljit_sw)code_ptr - executable_offset); |
| else { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)code_ptr); |
| } |
| |
| /* Branch to Thumb code has not been optimized yet. */ |
| if (diff & 0x3) |
| return 0; |
| |
| if (diff <= 0x01ffffff && diff >= -0x02000000) { |
| code_ptr -= 2; |
| *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK); |
| jump->flags |= PATCH_B; |
| return 1; |
| } |
| #endif |
| return 0; |
| } |
| |
| static SLJIT_INLINE void inline_set_jump_addr(sljit_uw jump_ptr, sljit_sw executable_offset, sljit_uw new_addr, sljit_s32 flush_cache) |
| { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| sljit_uw *ptr = (sljit_uw *)jump_ptr; |
| sljit_uw *inst = (sljit_uw *)ptr[0]; |
| sljit_uw 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); |
| |
| if (diff <= 0x7fffff && diff >= -0x800000) { |
| /* Turn to branch. */ |
| if (!bl) { |
| inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff); |
| if (flush_cache) { |
| inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| } else { |
| inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff); |
| inst[1] = NOP; |
| if (flush_cache) { |
| inst = (sljit_uw *)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) { |
| inst[0] = mov_pc; |
| if (!bl) { |
| if (flush_cache) { |
| inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| } else { |
| inst[1] = BLX | RM(TMP_REG1); |
| if (flush_cache) { |
| inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| } |
| } |
| *ptr = new_addr; |
| } |
| #else |
| sljit_uw *inst = (sljit_uw*)jump_ptr; |
| SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT); |
| 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) { |
| inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| #endif |
| } |
| |
| static sljit_uw get_imm(sljit_uw imm); |
| |
| static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_sw executable_offset, sljit_sw new_constant, sljit_s32 flush_cache) |
| { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| sljit_uw *ptr = (sljit_uw*)addr; |
| sljit_uw *inst = (sljit_uw*)ptr[0]; |
| sljit_uw ldr_literal = ptr[1]; |
| sljit_uw src2; |
| |
| src2 = get_imm(new_constant); |
| if (src2) { |
| *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2; |
| if (flush_cache) { |
| inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| return; |
| } |
| |
| src2 = get_imm(~new_constant); |
| if (src2) { |
| *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2; |
| if (flush_cache) { |
| inst = (sljit_uw *)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) { |
| *inst = ldr_literal; |
| if (flush_cache) { |
| inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| } |
| *ptr = new_constant; |
| #else |
| sljit_uw *inst = (sljit_uw*)addr; |
| SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT); |
| 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) { |
| inst = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| #endif |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler) |
| { |
| struct sljit_memory_fragment *buf; |
| sljit_uw *code; |
| sljit_uw *code_ptr; |
| sljit_uw *buf_ptr; |
| sljit_uw *buf_end; |
| sljit_uw size; |
| sljit_uw word_count; |
| sljit_uw next_addr; |
| sljit_sw executable_offset; |
| sljit_sw addr; |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| sljit_uw cpool_size; |
| sljit_uw cpool_skip_alignment; |
| sljit_uw cpool_current_index; |
| sljit_uw *cpool_start_address; |
| sljit_uw *last_pc_patch; |
| struct future_patch *first_patch; |
| #endif |
| |
| struct sljit_label *label; |
| struct sljit_jump *jump; |
| struct sljit_const *const_; |
| struct sljit_put_label *put_label; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_generate_code(compiler)); |
| reverse_buf(compiler); |
| |
| /* Second code generation pass. */ |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| size = compiler->size + (compiler->patches << 1); |
| if (compiler->cpool_fill > 0) |
| size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1; |
| #else |
| size = compiler->size; |
| #endif |
| code = (sljit_uw*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_uw)); |
| PTR_FAIL_WITH_EXEC_IF(code); |
| buf = compiler->buf; |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| cpool_size = 0; |
| cpool_skip_alignment = 0; |
| cpool_current_index = 0; |
| cpool_start_address = NULL; |
| first_patch = NULL; |
| last_pc_patch = code; |
| #endif |
| |
| code_ptr = code; |
| word_count = 0; |
| next_addr = 1; |
| executable_offset = SLJIT_EXEC_OFFSET(code); |
| |
| label = compiler->labels; |
| jump = compiler->jumps; |
| const_ = compiler->consts; |
| put_label = compiler->put_labels; |
| |
| if (label && label->size == 0) { |
| label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code, executable_offset); |
| label = label->next; |
| } |
| |
| do { |
| buf_ptr = (sljit_uw*)buf->memory; |
| buf_end = buf_ptr + (buf->used_size >> 2); |
| do { |
| word_count++; |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 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); |
| compiler->error = SLJIT_ERR_ALLOC_FAILED; |
| return NULL; |
| } |
| buf_ptr++; |
| if (++cpool_current_index >= cpool_size) { |
| SLJIT_ASSERT(!first_patch); |
| cpool_size = 0; |
| if (label && label->size == word_count) { |
| /* Points after the current instruction. */ |
| label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); |
| label->size = code_ptr - code; |
| label = label->next; |
| |
| next_addr = compute_next_addr(label, jump, const_, put_label); |
| } |
| } |
| } |
| } |
| else if ((*buf_ptr & 0xff000000) != PUSH_POOL) { |
| #endif |
| *code_ptr = *buf_ptr++; |
| if (next_addr == word_count) { |
| SLJIT_ASSERT(!label || label->size >= word_count); |
| SLJIT_ASSERT(!jump || jump->addr >= word_count); |
| SLJIT_ASSERT(!const_ || const_->addr >= word_count); |
| SLJIT_ASSERT(!put_label || put_label->addr >= word_count); |
| |
| /* These structures are ordered by their address. */ |
| if (jump && jump->addr == word_count) { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| if (detect_jump_type(jump, code_ptr, code, executable_offset)) |
| code_ptr--; |
| jump->addr = (sljit_uw)code_ptr; |
| #else |
| jump->addr = (sljit_uw)(code_ptr - 2); |
| if (detect_jump_type(jump, code_ptr, code, executable_offset)) |
| code_ptr -= 2; |
| #endif |
| jump = jump->next; |
| } |
| if (label && label->size == word_count) { |
| /* code_ptr can be affected above. */ |
| label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr + 1, executable_offset); |
| label->size = (code_ptr + 1) - code; |
| label = label->next; |
| } |
| if (const_ && const_->addr == word_count) { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| const_->addr = (sljit_uw)code_ptr; |
| #else |
| const_->addr = (sljit_uw)(code_ptr - 1); |
| #endif |
| const_ = const_->next; |
| } |
| if (put_label && put_label->addr == word_count) { |
| SLJIT_ASSERT(put_label->label); |
| put_label->addr = (sljit_uw)code_ptr; |
| put_label = put_label->next; |
| } |
| next_addr = compute_next_addr(label, jump, const_, put_label); |
| } |
| code_ptr++; |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| } |
| 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 | (((cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL); |
| code_ptr = cpool_start_address + cpool_current_index; |
| } |
| cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1; |
| cpool_current_index = 0; |
| last_pc_patch = code_ptr; |
| } |
| #endif |
| } while (buf_ptr < buf_end); |
| buf = buf->next; |
| } while (buf); |
| |
| SLJIT_ASSERT(!label); |
| SLJIT_ASSERT(!jump); |
| SLJIT_ASSERT(!const_); |
| SLJIT_ASSERT(!put_label); |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 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 = 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); |
| compiler->error = SLJIT_ERR_ALLOC_FAILED; |
| return NULL; |
| } |
| buf_ptr++; |
| cpool_current_index++; |
| } |
| SLJIT_ASSERT(!first_patch); |
| } |
| #endif |
| |
| jump = compiler->jumps; |
| while (jump) { |
| buf_ptr = (sljit_uw *)jump->addr; |
| |
| if (jump->flags & PATCH_B) { |
| addr = (sljit_sw)SLJIT_ADD_EXEC_OFFSET(buf_ptr + 2, executable_offset); |
| if (!(jump->flags & JUMP_ADDR)) { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| SLJIT_ASSERT(((sljit_sw)jump->u.label->addr - addr) <= 0x01ffffff && ((sljit_sw)jump->u.label->addr - addr) >= -0x02000000); |
| *buf_ptr |= (((sljit_sw)jump->u.label->addr - addr) >> 2) & 0x00ffffff; |
| } |
| else { |
| SLJIT_ASSERT(((sljit_sw)jump->u.target - addr) <= 0x01ffffff && ((sljit_sw)jump->u.target - addr) >= -0x02000000); |
| *buf_ptr |= (((sljit_sw)jump->u.target - addr) >> 2) & 0x00ffffff; |
| } |
| } |
| else if (jump->flags & SLJIT_REWRITABLE_JUMP) { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| jump->addr = (sljit_uw)code_ptr; |
| code_ptr[0] = (sljit_uw)buf_ptr; |
| code_ptr[1] = *buf_ptr; |
| inline_set_jump_addr((sljit_uw)code_ptr, executable_offset, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| code_ptr += 2; |
| #else |
| inline_set_jump_addr((sljit_uw)buf_ptr, executable_offset, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| #endif |
| } |
| else { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| if (jump->flags & IS_BL) |
| buf_ptr--; |
| if (*buf_ptr & (1 << 23)) |
| buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2; |
| else |
| buf_ptr += 1; |
| *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target; |
| #else |
| inline_set_jump_addr((sljit_uw)buf_ptr, executable_offset, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| #endif |
| } |
| jump = jump->next; |
| } |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| const_ = compiler->consts; |
| while (const_) { |
| buf_ptr = (sljit_uw*)const_->addr; |
| const_->addr = (sljit_uw)code_ptr; |
| |
| code_ptr[0] = (sljit_uw)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). */ |
| inline_set_const((sljit_uw)code_ptr, executable_offset, *buf_ptr, 0); |
| code_ptr += 2; |
| |
| const_ = const_->next; |
| } |
| #endif |
| |
| put_label = compiler->put_labels; |
| while (put_label) { |
| addr = put_label->label->addr; |
| buf_ptr = (sljit_uw*)put_label->addr; |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| SLJIT_ASSERT((buf_ptr[0] & 0xffff0000) == 0xe59f0000); |
| buf_ptr[((buf_ptr[0] & 0xfff) >> 2) + 2] = addr; |
| #else |
| SLJIT_ASSERT((buf_ptr[-1] & 0xfff00000) == MOVW && (buf_ptr[0] & 0xfff00000) == MOVT); |
| buf_ptr[-1] |= ((addr << 4) & 0xf0000) | (addr & 0xfff); |
| buf_ptr[0] |= ((addr >> 12) & 0xf0000) | ((addr >> 16) & 0xfff); |
| #endif |
| put_label = put_label->next; |
| } |
| |
| SLJIT_ASSERT(code_ptr - code <= (sljit_s32)size); |
| |
| compiler->error = SLJIT_ERR_COMPILED; |
| compiler->executable_offset = executable_offset; |
| compiler->executable_size = (code_ptr - code) * sizeof(sljit_uw); |
| |
| code = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(code, executable_offset); |
| code_ptr = (sljit_uw *)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); |
| |
| SLJIT_CACHE_FLUSH(code, code_ptr); |
| return code; |
| } |
| |
| 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: |
| #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| case SLJIT_HAS_PREFETCH: |
| #endif |
| return 1; |
| |
| 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) |
| |
| /* 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_uw 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) | (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)) |
| |
| 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_s32 args, size, i, tmp; |
| sljit_uw push; |
| |
| 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); |
| |
| /* Push saved registers, temporary registers |
| stmdb sp!, {..., lr} */ |
| push = PUSH | (1 << 14); |
| |
| 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_inst(compiler, push)); |
| |
| /* Stack must be aligned to 8 bytes: */ |
| size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1); |
| local_size = ((size + local_size + 7) & ~7) - size; |
| compiler->local_size = local_size; |
| if (local_size > 0) |
| FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size)); |
| |
| args = get_arg_count(arg_types); |
| |
| if (args >= 1) |
| FAIL_IF(push_inst(compiler, MOV | RD(SLJIT_S0) | RM(SLJIT_R0))); |
| if (args >= 2) |
| FAIL_IF(push_inst(compiler, MOV | RD(SLJIT_S1) | RM(SLJIT_R1))); |
| if (args >= 3) |
| FAIL_IF(push_inst(compiler, MOV | RD(SLJIT_S2) | RM(SLJIT_R2))); |
| |
| 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_uw pop; |
| |
| 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) |
| FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, compiler->local_size)); |
| |
| /* Push saved registers, temporary registers |
| ldmia sp!, {..., pc} */ |
| pop = POP | (1 << 15); |
| |
| 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 push_inst(compiler, pop); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Operators */ |
| /* --------------------------------------------------------------------- */ |
| |
| /* flags: */ |
| /* Arguments are swapped. */ |
| #define ARGS_SWAPPED 0x01 |
| /* Inverted immediate. */ |
| #define INV_IMM 0x02 |
| /* Source and destination is register. */ |
| #define MOVE_REG_CONV 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) |
| |
| #define EMIT_SHIFT_INS_AND_RETURN(opcode) \ |
| SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); \ |
| if (compiler->shift_imm != 0x20) { \ |
| SLJIT_ASSERT(src1 == TMP_REG1); \ |
| SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); \ |
| \ |
| if (compiler->shift_imm != 0) \ |
| return push_inst(compiler, MOV | (flags & SET_FLAGS) | \ |
| RD(dst) | (compiler->shift_imm << 7) | (opcode << 5) | RM(src2)); \ |
| return push_inst(compiler, MOV | (flags & SET_FLAGS) | RD(dst) | RM(src2)); \ |
| } \ |
| return push_inst(compiler, MOV | (flags & SET_FLAGS) | RD(dst) | \ |
| (reg_map[(flags & ARGS_SWAPPED) ? src1 : src2] << 8) | (opcode << 5) | 0x10 | RM((flags & ARGS_SWAPPED) ? src2 : src1)); |
| |
| static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags, |
| sljit_s32 dst, sljit_s32 src1, sljit_s32 src2) |
| { |
| switch (GET_OPCODE(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 & MOVE_REG_CONV) { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| if (op == SLJIT_MOV_U8) |
| return push_inst(compiler, AND | RD(dst) | RN(src2) | SRC2_IMM | 0xff); |
| FAIL_IF(push_inst(compiler, MOV | RD(dst) | (24 << 7) | RM(src2))); |
| return push_inst(compiler, MOV | RD(dst) | (24 << 7) | (op == SLJIT_MOV_U8 ? 0x20 : 0x40) | RM(dst)); |
| #else |
| return push_inst(compiler, (op == SLJIT_MOV_U8 ? UXTB : SXTB) | RD(dst) | RM(src2)); |
| #endif |
| } |
| else 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 & MOVE_REG_CONV) { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| FAIL_IF(push_inst(compiler, MOV | RD(dst) | (16 << 7) | RM(src2))); |
| return push_inst(compiler, MOV | RD(dst) | (16 << 7) | (op == SLJIT_MOV_U16 ? 0x20 : 0x40) | RM(dst)); |
| #else |
| return push_inst(compiler, (op == SLJIT_MOV_U16 ? UXTH : SXTH) | RD(dst) | RM(src2)); |
| #endif |
| } |
| else 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_NOT: |
| if (src2 & SRC2_IMM) { |
| return push_inst(compiler, ((flags & INV_IMM) ? MOV : MVN) | (flags & SET_FLAGS) | RD(dst) | src2); |
| } |
| return push_inst(compiler, MVN | (flags & SET_FLAGS) | RD(dst) | RM(src2)); |
| |
| case SLJIT_CLZ: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| SLJIT_ASSERT(!(src2 & SRC2_IMM)); |
| FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2))); |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_ADD: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| if ((flags & (UNUSED_RETURN | SET_FLAGS)) == (UNUSED_RETURN | SET_FLAGS) && !(flags & ARGS_SWAPPED)) |
| 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 | SET_FLAGS)) == (UNUSED_RETURN | SET_FLAGS) && !(flags & ARGS_SWAPPED)) |
| 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)); |
| |
| if (!HAS_FLAGS(op)) |
| return push_inst(compiler, MUL | (reg_map[dst] << 16) | (reg_map[src2] << 8) | reg_map[src1]); |
| |
| FAIL_IF(push_inst(compiler, SMULL | (reg_map[TMP_REG1] << 16) | (reg_map[dst] << 12) | (reg_map[src2] << 8) | reg_map[src1])); |
| |
| /* cmp TMP_REG1, dst asr #31. */ |
| return push_inst(compiler, CMP | SET_FLAGS | RN(TMP_REG1) | RM(dst) | 0xfc0); |
| |
| case SLJIT_AND: |
| 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: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| return push_inst(compiler, EOR | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| |
| case SLJIT_SHL: |
| EMIT_SHIFT_INS_AND_RETURN(0); |
| |
| case SLJIT_LSHR: |
| EMIT_SHIFT_INS_AND_RETURN(1); |
| |
| case SLJIT_ASHR: |
| EMIT_SHIFT_INS_AND_RETURN(2); |
| } |
| |
| SLJIT_UNREACHABLE(); |
| return SLJIT_SUCCESS; |
| } |
| |
| #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_s32 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); |
| else |
| return 0; |
| } |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| static sljit_s32 generate_int(struct sljit_compiler *compiler, sljit_s32 reg, sljit_uw imm, sljit_s32 positive) |
| { |
| sljit_uw mask; |
| sljit_uw imm1; |
| sljit_uw imm2; |
| sljit_s32 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; |
| } |
| |
| FAIL_IF(push_inst(compiler, (positive ? MOV : MVN) | RD(reg) | imm1)); |
| FAIL_IF(push_inst(compiler, (positive ? ORR : BIC) | RD(reg) | RN(reg) | imm2)); |
| return 1; |
| } |
| #endif |
| |
| static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg, sljit_uw imm) |
| { |
| sljit_uw tmp; |
| |
| #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| if (!(imm & ~0xffff)) |
| return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)); |
| #endif |
| |
| /* 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_V5 && SLJIT_CONFIG_ARM_V5) |
| /* Create imm by 2 inst. */ |
| FAIL_IF(generate_int(compiler, reg, imm, 1)); |
| FAIL_IF(generate_int(compiler, reg, ~imm, 0)); |
| |
| /* Load integer. */ |
| return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, reg, TMP_PC, 0), imm); |
| #else |
| 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 |
| } |
| |
| 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_uw imm, offset_reg; |
| sljit_uw is_type1_transfer = IS_TYPE1_TRANSFER(flags); |
| |
| SLJIT_ASSERT (arg & SLJIT_MEM); |
| SLJIT_ASSERT((arg & REG_MASK) != tmp_reg); |
| |
| if ((arg & REG_MASK) == SLJIT_UNUSED) { |
| if (is_type1_transfer) { |
| FAIL_IF(load_immediate(compiler, tmp_reg, argw & ~0xfff)); |
| argw &= 0xfff; |
| } |
| else { |
| FAIL_IF(load_immediate(compiler, tmp_reg, argw & ~0xff)); |
| argw &= 0xff; |
| } |
| |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, tmp_reg, |
| is_type1_transfer ? argw : TYPE2_TRANSFER_IMM(argw))); |
| } |
| |
| if (arg & OFFS_REG_MASK) { |
| offset_reg = OFFS_REG(arg); |
| arg &= REG_MASK; |
| argw &= 0x3; |
| |
| if (argw != 0 && !is_type1_transfer) { |
| FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | RM(offset_reg) | (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) | (is_type1_transfer ? (1 << 25) : 0) | (argw << 7))); |
| } |
| |
| arg &= REG_MASK; |
| |
| if (is_type1_transfer) { |
| if (argw > 0xfff) { |
| imm = get_imm(argw & ~0xfff); |
| if (imm) { |
| FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | imm)); |
| argw = argw & 0xfff; |
| arg = tmp_reg; |
| } |
| } |
| else if (argw < -0xfff) { |
| imm = get_imm(-argw & ~0xfff); |
| if (imm) { |
| FAIL_IF(push_inst(compiler, SUB | RD(tmp_reg) | RN(arg) | imm)); |
| argw = -(-argw & 0xfff); |
| arg = tmp_reg; |
| } |
| } |
| |
| if (argw >= 0 && argw <= 0xfff) |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg, argw)); |
| |
| if (argw < 0 && argw >= -0xfff) |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 0, reg, arg, -argw)); |
| } |
| else { |
| if (argw > 0xff) { |
| imm = get_imm(argw & ~0xff); |
| if (imm) { |
| FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | imm)); |
| argw = argw & 0xff; |
| arg = tmp_reg; |
| } |
| } |
| else if (argw < -0xff) { |
| imm = get_imm(-argw & ~0xff); |
| if (imm) { |
| FAIL_IF(push_inst(compiler, SUB | RD(tmp_reg) | RN(arg) | imm)); |
| argw = -(-argw & 0xff); |
| arg = tmp_reg; |
| } |
| } |
| |
| if (argw >= 0 && argw <= 0xff) |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg, TYPE2_TRANSFER_IMM(argw))); |
| |
| if (argw < 0 && argw >= -0xff) { |
| argw = -argw; |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 0, reg, arg, TYPE2_TRANSFER_IMM(argw))); |
| } |
| } |
| |
| FAIL_IF(load_immediate(compiler, tmp_reg, argw)); |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg, |
| RM(tmp_reg) | (is_type1_transfer ? (1 << 25) : 0))); |
| } |
| |
| 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; |
| sljit_s32 src2_reg; |
| sljit_s32 flags = HAS_FLAGS(op) ? SET_FLAGS : 0; |
| |
| /* Destination check. */ |
| if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) |
| flags |= UNUSED_RETURN; |
| |
| SLJIT_ASSERT(!(inp_flags & ALLOW_INV_IMM) || (inp_flags & ALLOW_IMM)); |
| |
| src2_reg = 0; |
| |
| do { |
| if (!(inp_flags & ALLOW_IMM)) |
| break; |
| |
| if (src2 & SLJIT_IMM) { |
| src2_reg = get_imm(src2w); |
| if (src2_reg) |
| break; |
| if (inp_flags & ALLOW_INV_IMM) { |
| src2_reg = get_imm(~src2w); |
| if (src2_reg) { |
| flags |= INV_IMM; |
| break; |
| } |
| } |
| if (GET_OPCODE(op) == SLJIT_ADD) { |
| src2_reg = get_imm(-src2w); |
| if (src2_reg) { |
| op = SLJIT_SUB | GET_ALL_FLAGS(op); |
| break; |
| } |
| } |
| if (GET_OPCODE(op) == SLJIT_SUB) { |
| src2_reg = get_imm(-src2w); |
| if (src2_reg) { |
| op = SLJIT_ADD | GET_ALL_FLAGS(op); |
| break; |
| } |
| } |
| } |
| |
| if (src1 & SLJIT_IMM) { |
| src2_reg = get_imm(src1w); |
| if (src2_reg) { |
| flags |= ARGS_SWAPPED; |
| src1 = src2; |
| src1w = src2w; |
| break; |
| } |
| if (inp_flags & ALLOW_INV_IMM) { |
| src2_reg = get_imm(~src1w); |
| if (src2_reg) { |
| flags |= ARGS_SWAPPED | INV_IMM; |
| src1 = src2; |
| src1w = src2w; |
| break; |
| } |
| } |
| if (GET_OPCODE(op) == SLJIT_ADD) { |
| src2_reg = get_imm(-src1w); |
| if (src2_reg) { |
| /* Note: add is commutative operation. */ |
| src1 = src2; |
| src1w = src2w; |
| op = SLJIT_SUB | GET_ALL_FLAGS(op); |
| break; |
| } |
| } |
| } |
| } while(0); |
| |
| /* 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 { |
| FAIL_IF(load_immediate(compiler, TMP_REG1, src1w)); |
| src1_reg = TMP_REG1; |
| } |
| |
| /* Destination. */ |
| dst_reg = SLOW_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_REG2); |
| } |
| |
| if (FAST_IS_REG(src2) && dst_reg != TMP_REG2) |
| flags |= MOVE_REG_CONV; |
| } |
| |
| /* Source 2. */ |
| if (src2_reg == 0) { |
| src2_reg = (op <= SLJIT_MOV_P) ? dst_reg : TMP_REG2; |
| |
| if (FAST_IS_REG(src2)) |
| src2_reg = src2; |
| else if (src2 & SLJIT_MEM) |
| FAIL_IF(emit_op_mem(compiler, inp_flags | LOAD_DATA, src2_reg, src2, src2w, TMP_REG2)); |
| else |
| FAIL_IF(load_immediate(compiler, src2_reg, src2w)); |
| } |
| |
| FAIL_IF(emit_single_op(compiler, op, flags, dst_reg, src1_reg, 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_sw 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) |
| | (reg_map[SLJIT_R1] << 16) |
| | (reg_map[SLJIT_R0] << 12) |
| | (reg_map[SLJIT_R0] << 8) |
| | reg_map[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, 0xe52d0000 | (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, 0xe58d0004 | (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, 0xe58d0008 | (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_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_inst(compiler, 0xe59d0008 | (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, 0xe59d0004 | (saved_reg_list[1] << 12) /* ldr rX, [sp, #4] */)); |
| } |
| return push_inst(compiler, 0xe49d0000 | (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_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_NOT: |
| return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw); |
| |
| case 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 | GET_ALL_FLAGS(op), dst, dstw, SLJIT_IMM, 0, src, srcw); |
| |
| case SLJIT_CLZ: |
| return emit_op(compiler, op, 0, 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) |
| { |
| 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; |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_ADD: |
| case SLJIT_ADDC: |
| case SLJIT_SUB: |
| case SLJIT_SUBC: |
| case SLJIT_OR: |
| case SLJIT_XOR: |
| return emit_op(compiler, op, ALLOW_IMM, 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_LSHR: |
| case SLJIT_ASHR: |
| 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_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: |
| #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| SLJIT_ASSERT(src & SLJIT_MEM); |
| return emit_op_mem(compiler, PRELOAD | LOAD_DATA, TMP_PC, src, srcw, TMP_REG1); |
| #else /* !SLJIT_CONFIG_ARM_V7 */ |
| return SLJIT_SUCCESS; |
| #endif /* SLJIT_CONFIG_ARM_V7 */ |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| 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)); |
| |
| return push_inst(compiler, *(sljit_uw*)instruction); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Floating point operators */ |
| /* --------------------------------------------------------------------- */ |
| |
| |
| #define FPU_LOAD (1 << 20) |
| #define EMIT_FPU_DATA_TRANSFER(inst, add, base, freg, offs) \ |
| ((inst) | ((add) << 23) | (reg_map[base] << 16) | (freg_map[freg] << 12) | (offs)) |
| #define EMIT_FPU_OPERATION(opcode, mode, dst, src1, src2) \ |
| ((opcode) | (mode) | (freg_map[dst] << 12) | freg_map[src1] | (freg_map[src2] << 16)) |
| |
| 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); |
| arg &= ~SLJIT_MEM; |
| |
| if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) { |
| FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG2) | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | ((argw & 0x3) << 7))); |
| arg = TMP_REG2; |
| 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(argw & ~0x3fc); |
| if (imm) { |
| FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG2) | RN(arg & REG_MASK) | imm)); |
| return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG2, reg, (argw & 0x3fc) >> 2)); |
| } |
| imm = get_imm(-argw & ~0x3fc); |
| if (imm) { |
| argw = -argw; |
| FAIL_IF(push_inst(compiler, SUB | RD(TMP_REG2) | RN(arg & REG_MASK) | imm)); |
| return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, TMP_REG2, reg, (argw & 0x3fc) >> 2)); |
| } |
| } |
| |
| if (arg) { |
| FAIL_IF(load_immediate(compiler, TMP_REG2, argw)); |
| FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG2) | RN(arg & REG_MASK) | RM(TMP_REG2))); |
| } |
| else |
| FAIL_IF(load_immediate(compiler, TMP_REG2, argw)); |
| |
| return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG2, 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_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_inst(compiler, EMIT_FPU_OPERATION(VCVT_S32_F32, op & SLJIT_F32_OP, TMP_FREG1, src, 0))); |
| |
| if (FAST_IS_REG(dst)) |
| return push_inst(compiler, VMOV | (1 << 20) | RD(dst) | (freg_map[TMP_FREG1] << 16)); |
| |
| /* 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_inst(compiler, VMOV | RD(src) | (freg_map[TMP_FREG1] << 16))); |
| 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_inst(compiler, VMOV | RD(TMP_REG1) | (freg_map[TMP_FREG1] << 16))); |
| } |
| |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCVT_F32_S32, op & SLJIT_F32_OP, dst_r, TMP_FREG1, 0))); |
| |
| 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) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src1, src1w)); |
| src1 = TMP_FREG1; |
| } |
| |
| if (src2 & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w)); |
| src2 = TMP_FREG2; |
| } |
| |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCMP_F32, op & SLJIT_F32_OP, src1, src2, 0))); |
| return push_inst(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) { |
| FAIL_IF(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_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, op & SLJIT_F32_OP, 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_F32_OP, dst_r, src, 0))); |
| break; |
| case SLJIT_ABS_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VABS_F32, op & SLJIT_F32_OP, dst_r, src, 0))); |
| break; |
| case SLJIT_CONV_F64_FROM_F32: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCVT_F64_F32, op & SLJIT_F32_OP, dst_r, src, 0))); |
| 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 (src2 & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w)); |
| src2 = TMP_FREG2; |
| } |
| |
| if (src1 & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | 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_F32_OP, dst_r, src2, src1))); |
| break; |
| |
| case SLJIT_SUB_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VSUB_F32, op & SLJIT_F32_OP, dst_r, src2, src1))); |
| break; |
| |
| case SLJIT_MUL_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMUL_F32, op & SLJIT_F32_OP, dst_r, src2, src1))); |
| break; |
| |
| case SLJIT_DIV_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VDIV_F32, op & SLJIT_F32_OP, dst_r, src2, src1))); |
| break; |
| } |
| |
| if (dst_r == TMP_FREG1) |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP), TMP_FREG1, dst, dstw)); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| #undef FPU_LOAD |
| #undef EMIT_FPU_DATA_TRANSFER |
| |
| /* --------------------------------------------------------------------- */ |
| /* 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_inst(compiler, MOV | RD(dst) | RM(TMP_REG2)); |
| |
| /* Memory. */ |
| return emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* 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 0x00000000; |
| |
| case SLJIT_NOT_EQUAL: |
| case SLJIT_MUL_OVERFLOW: |
| case SLJIT_NOT_EQUAL_F64: |
| return 0x10000000; |
| |
| case SLJIT_LESS: |
| case SLJIT_LESS_F64: |
| return 0x30000000; |
| |
| case SLJIT_GREATER_EQUAL: |
| case SLJIT_GREATER_EQUAL_F64: |
| return 0x20000000; |
| |
| case SLJIT_GREATER: |
| case SLJIT_GREATER_F64: |
| return 0x80000000; |
| |
| case SLJIT_LESS_EQUAL: |
| case SLJIT_LESS_EQUAL_F64: |
| return 0x90000000; |
| |
| case SLJIT_SIG_LESS: |
| return 0xb0000000; |
| |
| case SLJIT_SIG_GREATER_EQUAL: |
| return 0xa0000000; |
| |
| case SLJIT_SIG_GREATER: |
| return 0xc0000000; |
| |
| case SLJIT_SIG_LESS_EQUAL: |
| return 0xd0000000; |
| |
| case SLJIT_OVERFLOW: |
| case SLJIT_UNORDERED_F64: |
| return 0x60000000; |
| |
| case SLJIT_NOT_OVERFLOW: |
| case SLJIT_ORDERED_F64: |
| return 0x70000000; |
| |
| default: |
| SLJIT_ASSERT(type >= SLJIT_JUMP && type <= SLJIT_CALL_CDECL); |
| 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_V5 && SLJIT_CONFIG_ARM_V5) |
| if (type >= SLJIT_FAST_CALL) |
| PTR_FAIL_IF(prepare_blx(compiler)); |
| 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(type), 0)); |
| |
| if (jump->flags & SLJIT_REWRITABLE_JUMP) { |
| jump->addr = compiler->size; |
| compiler->patches++; |
| } |
| |
| if (type >= SLJIT_FAST_CALL) { |
| jump->flags |= IS_BL; |
| PTR_FAIL_IF(emit_blx(compiler)); |
| } |
| |
| if (!(jump->flags & SLJIT_REWRITABLE_JUMP)) |
| jump->addr = compiler->size; |
| #else |
| if (type >= SLJIT_FAST_CALL) |
| jump->flags |= IS_BL; |
| PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0)); |
| PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(type))); |
| jump->addr = compiler->size; |
| #endif |
| 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_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | (((stack_offset - 16) + 0x7) & ~0x7))); |
| |
| /* 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_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2))); |
| *src = TMP_REG1; |
| } |
| FAIL_IF(push_inst(compiler, VMOV | 0x100000 | (float_arg_count << 16) | (stack_offset << 10))); |
| } else |
| FAIL_IF(push_inst(compiler, VSTR_F32 | 0x800000 | RN(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_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2))); |
| *src = TMP_REG1; |
| } |
| FAIL_IF(push_inst(compiler, VMOV2 | 0x100000 | (stack_offset << 10) | ((stack_offset + sizeof(sljit_sw)) << 14) | float_arg_count)); |
| } else |
| FAIL_IF(push_inst(compiler, VSTR_F32 | 0x800100 | RN(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_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2))); |
| *src = TMP_REG1; |
| } |
| else if (src_offset == word_arg_offset) { |
| *src = 1 + (stack_offset >> 2); |
| src_offset = stack_offset; |
| } |
| FAIL_IF(push_inst(compiler, MOV | (stack_offset << 10) | (word_arg_offset >> 2))); |
| } else |
| FAIL_IF(push_inst(compiler, data_transfer_insts[WORD_SIZE] | 0x800000 | RN(SLJIT_SP) | (word_arg_offset << 10) | (stack_offset - 16))); |
| } |
| 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_inst(compiler, VMOV | (0 << 16) | (0 << 12))); |
| if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F64) |
| FAIL_IF(push_inst(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_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | (((stack_size - 16) + 0x7) & ~0x7)); |
| } |
| |
| #else /* !__SOFTFP__ */ |
| |
| 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_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, |
| 0, (new_offset >> 1) + 1, (offset >> 1) + 1, 0) | ((new_offset & 0x1) ? 0x400000 : 0))); |
| |
| 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_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, SLJIT_F32_OP, (new_offset >> 1) + 1, (offset >> 1) + 1, 0))); |
| |
| offset += 2; |
| } |
| arg_types >>= SLJIT_DEF_SHIFT; |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| #endif /* __SOFTFP__ */ |
| |
| #undef EMIT_FPU_OPERATION |
| |
| 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 /* !__SOFTFP__ */ |
| 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 /* __SOFTFP__ */ |
| } |
| |
| 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 = srcw; |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| if (type >= SLJIT_FAST_CALL) |
| FAIL_IF(prepare_blx(compiler)); |
| 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) |
| FAIL_IF(emit_blx(compiler)); |
| #else |
| FAIL_IF(emit_imm(compiler, TMP_REG1, 0)); |
| FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1))); |
| #endif |
| jump->addr = compiler->size; |
| 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) |
| { |
| 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 | LOAD_DATA, 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_reg, flags = GET_ALL_FLAGS(op); |
| sljit_uw 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(type & 0xff); |
| 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_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 (SLJIT_UNLIKELY(src & SLJIT_IMM)) { |
| tmp = get_imm(srcw); |
| if (tmp) |
| return push_inst(compiler, ((MOV | RD(dst_reg) | tmp) & ~COND_MASK) | cc); |
| |
| tmp = get_imm(~srcw); |
| 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_uw) srcw; |
| 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 |
| FAIL_IF(load_immediate(compiler, TMP_REG1, srcw)); |
| src = TMP_REG1; |
| #endif |
| } |
| |
| return push_inst(compiler, ((MOV | RD(dst_reg) | RM(src)) & ~COND_MASK) | cc); |
| } |
| |
| 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_uw is_type1_transfer, inst; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_mem(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_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)) | (memw << 7)); |
| |
| if (is_type1_transfer) |
| inst |= (1 << 25); |
| |
| if (type & SLJIT_MEM_PRE) |
| inst |= (1 << 21); |
| else |
| inst ^= (1 << 24); |
| |
| return push_inst(compiler, inst); |
| } |
| |
| inst = EMIT_DATA_TRANSFER(flags, 0, reg, mem & REG_MASK, 0); |
| |
| if (type & SLJIT_MEM_PRE) |
| inst |= (1 << 21); |
| else |
| inst ^= (1 << 24); |
| |
| if (is_type1_transfer) { |
| if (memw >= 0) |
| inst |= (1 << 23); |
| else |
| memw = -memw; |
| |
| return push_inst(compiler, inst | memw); |
| } |
| |
| if (memw >= 0) |
| inst |= (1 << 23); |
| else |
| memw = -memw; |
| |
| return push_inst(compiler, inst | TYPE2_TRANSFER_IMM(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); |
| |
| dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG2; |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, dst_r, TMP_PC, 0), init_value)); |
| compiler->patches++; |
| #else |
| PTR_FAIL_IF(emit_imm(compiler, dst_r, init_value)); |
| #endif |
| |
| const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const)); |
| PTR_FAIL_IF(!const_); |
| set_const(const_, compiler); |
| |
| 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_put_label* sljit_emit_put_label(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw) |
| { |
| struct sljit_put_label *put_label; |
| sljit_s32 dst_r; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_put_label(compiler, dst, dstw)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| |
| dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG2; |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 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 |
| PTR_FAIL_IF(emit_imm(compiler, dst_r, 0)); |
| #endif |
| |
| put_label = (struct sljit_put_label*)ensure_abuf(compiler, sizeof(struct sljit_put_label)); |
| PTR_FAIL_IF(!put_label); |
| set_put_label(put_label, compiler, 0); |
| |
| if (dst & SLJIT_MEM) |
| PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1)); |
| return put_label; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset) |
| { |
| inline_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) |
| { |
| inline_set_const(addr, executable_offset, new_constant, 1); |
| } |