| /* |
| * Stack-less Just-In-Time compiler |
| * |
| * Copyright 2009-2010 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 SLJIT_CONST char* sljit_get_platform_name() |
| { |
| #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| return "arm-v7"; |
| #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| return "arm-v5"; |
| #else |
| #error "Internal error: Unknown ARM architecture" |
| #endif |
| } |
| |
| /* Last register + 1. */ |
| #define TMP_REG1 (SLJIT_NO_REGISTERS + 1) |
| #define TMP_REG2 (SLJIT_NO_REGISTERS + 2) |
| #define TMP_REG3 (SLJIT_NO_REGISTERS + 3) |
| #define TMP_PC (SLJIT_NO_REGISTERS + 4) |
| |
| #define TMP_FREG1 (SLJIT_FLOAT_REG4 + 1) |
| #define TMP_FREG2 (SLJIT_FLOAT_REG4 + 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) / (int)sizeof(sljit_uw)) - (CONST_POOL_ALIGNMENT - 1)) |
| |
| /* See sljit_emit_enter if you want to change them. */ |
| static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = { |
| 0, 0, 1, 2, 10, 11, 4, 5, 6, 7, 8, 13, 3, 12, 14, 15 |
| }; |
| |
| #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 |
| |
| /* DP - Data Processing instruction (use with EMIT_DATA_PROCESS_INS). */ |
| #define ADC_DP 0x5 |
| #define ADD_DP 0x4 |
| #define AND_DP 0x0 |
| #define B 0xea000000 |
| #define BIC_DP 0xe |
| #define BL 0xeb000000 |
| #define BLX 0xe12fff30 |
| #define BX 0xe12fff10 |
| #define CLZ 0xe16f0f10 |
| #define CMP_DP 0xa |
| #define DEBUGGER 0xe1200070 |
| #define EOR_DP 0x1 |
| #define MOV_DP 0xd |
| #define MUL 0xe0000090 |
| #define MVN_DP 0xf |
| #define NOP 0xe1a00000 |
| #define ORR_DP 0xc |
| #define PUSH 0xe92d0000 |
| #define POP 0xe8bd0000 |
| #define RSB_DP 0x3 |
| #define RSC_DP 0x7 |
| #define SBC_DP 0x6 |
| #define SMULL 0xe0c00090 |
| #define SUB_DP 0x2 |
| #define VABS_F64 0xeeb00bc0 |
| #define VADD_F64 0xee300b00 |
| #define VCMP_F64 0xeeb40b40 |
| #define VDIV_F64 0xee800b00 |
| #define VMOV_F64 0xeeb00b40 |
| #define VMRS 0xeef1fa10 |
| #define VMUL_F64 0xee200b00 |
| #define VNEG_F64 0xeeb10b40 |
| #define VSTR 0xed000b00 |
| #define VSUB_F64 0xee300b40 |
| |
| #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 int 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; |
| int 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 int 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 int 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_ub* 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 int 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 int 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 int 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)); |
| 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 ((int)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; |
| int index; |
| int value; |
| }; |
| |
| static SLJIT_INLINE int resolve_const_pool_index(struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr) |
| { |
| int value; |
| struct future_patch *curr_patch, *prev_patch; |
| |
| /* Using the values generated by patch_pc_relative_loads. */ |
| if (!*first_patch) |
| value = (int)cpool_start_address[cpool_current_index]; |
| else { |
| curr_patch = *first_patch; |
| prev_patch = 0; |
| while (1) { |
| if (!curr_patch) { |
| value = (int)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); |
| 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)); |
| if (!curr_patch) { |
| while (*first_patch) { |
| curr_patch = *first_patch; |
| *first_patch = (*first_patch)->next; |
| SLJIT_FREE(curr_patch); |
| } |
| 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 int 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 int emit_imm(struct sljit_compiler *compiler, int reg, sljit_w 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 int detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code) |
| { |
| sljit_w 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_w)jump->u.target - (sljit_w)(code_ptr + 2)); |
| else { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)(code_ptr + 2)); |
| } |
| |
| /* Branch to Thumb code has not been optimized yet. */ |
| if (diff & 0x3) |
| return 0; |
| |
| diff >>= 2; |
| 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_w)jump->u.target - (sljit_w)code_ptr); |
| else { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)code_ptr); |
| } |
| |
| /* Branch to Thumb code has not been optimized yet. */ |
| if (diff & 0x3) |
| return 0; |
| |
| diff >>= 2; |
| 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 addr, sljit_uw new_addr, int flush) |
| { |
| #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 mov_pc = ptr[1]; |
| int bl = (mov_pc & 0x0000f000) != RD(TMP_PC); |
| sljit_w diff = (sljit_w)(((sljit_w)new_addr - (sljit_w)(inst + 2)) >> 2); |
| |
| if (diff <= 0x7fffff && diff >= -0x800000) { |
| /* Turn to branch. */ |
| if (!bl) { |
| inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff); |
| if (flush) { |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| } else { |
| inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff); |
| inst[1] = NOP; |
| if (flush) { |
| 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) { |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| } else { |
| inst[1] = BLX | RM(TMP_REG1); |
| if (flush) { |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| } |
| } |
| *ptr = new_addr; |
| } |
| #else |
| sljit_uw *inst = (sljit_uw*)addr; |
| 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) { |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| #endif |
| } |
| |
| static sljit_uw get_immediate(sljit_uw imm); |
| |
| static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_w new_constant, int flush) |
| { |
| #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_immediate(new_constant); |
| if (src2) { |
| *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2; |
| if (flush) { |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| return; |
| } |
| |
| src2 = get_immediate(~new_constant); |
| if (src2) { |
| *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2; |
| if (flush) { |
| 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) { |
| 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) { |
| 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; |
| #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_; |
| |
| CHECK_ERROR_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; |
| |
| label = compiler->labels; |
| jump = compiler->jumps; |
| const_ = compiler->consts; |
| |
| if (label && label->size == 0) { |
| label->addr = (sljit_uw)code; |
| label->size = 0; |
| 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(&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)code_ptr; |
| label->size = code_ptr - code; |
| label = label->next; |
| } |
| } |
| } |
| } |
| else if ((*buf_ptr & 0xff000000) != PUSH_POOL) { |
| #endif |
| *code_ptr = *buf_ptr++; |
| /* These structures are ordered by their address. */ |
| SLJIT_ASSERT(!label || label->size >= word_count); |
| SLJIT_ASSERT(!jump || jump->addr >= word_count); |
| SLJIT_ASSERT(!const_ || const_->addr >= word_count); |
| if (jump && jump->addr == word_count) { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| if (detect_jump_type(jump, code_ptr, code)) |
| code_ptr--; |
| jump->addr = (sljit_uw)code_ptr; |
| #else |
| jump->addr = (sljit_uw)(code_ptr - 2); |
| if (detect_jump_type(jump, code_ptr, code)) |
| code_ptr -= 2; |
| #endif |
| jump = jump->next; |
| } |
| if (label && label->size == word_count) { |
| /* code_ptr can be affected above. */ |
| label->addr = (sljit_uw)(code_ptr + 1); |
| 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; |
| } |
| 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_); |
| |
| #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(&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) { |
| if (!(jump->flags & JUMP_ADDR)) { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| SLJIT_ASSERT(((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >= -0x02000000); |
| *buf_ptr |= (((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff; |
| } |
| else { |
| SLJIT_ASSERT(((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >= -0x02000000); |
| *buf_ptr |= (((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >> 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, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| code_ptr += 2; |
| #else |
| inline_set_jump_addr((sljit_uw)buf_ptr, (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, (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, *buf_ptr, 0); |
| code_ptr += 2; |
| |
| const_ = const_->next; |
| } |
| #endif |
| |
| SLJIT_ASSERT(code_ptr - code <= (int)size); |
| |
| SLJIT_CACHE_FLUSH(code, code_ptr); |
| compiler->error = SLJIT_ERR_COMPILED; |
| compiler->executable_size = size * sizeof(sljit_uw); |
| return code; |
| } |
| |
| /* emit_op inp_flags. |
| WRITE_BACK must be the first, since it is a flag. */ |
| #define WRITE_BACK 0x01 |
| #define ALLOW_IMM 0x02 |
| #define ALLOW_INV_IMM 0x04 |
| #define ALLOW_ANY_IMM (ALLOW_IMM | ALLOW_INV_IMM) |
| #define ARG_TEST 0x08 |
| |
| /* Creates an index in data_transfer_insts array. */ |
| #define WORD_DATA 0x00 |
| #define BYTE_DATA 0x10 |
| #define HALF_DATA 0x20 |
| #define SIGNED_DATA 0x40 |
| #define LOAD_DATA 0x80 |
| |
| #define EMIT_INSTRUCTION(inst) \ |
| FAIL_IF(push_inst(compiler, (inst))) |
| |
| /* Condition: AL. */ |
| #define EMIT_DATA_PROCESS_INS(opcode, set_flags, dst, src1, src2) \ |
| (0xe0000000 | ((opcode) << 21) | (set_flags) | RD(dst) | RN(src1) | (src2)) |
| |
| static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags, |
| int dst, sljit_w dstw, |
| int src1, sljit_w src1w, |
| int src2, sljit_w src2w); |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size) |
| { |
| int size; |
| sljit_uw push; |
| |
| CHECK_ERROR(); |
| check_sljit_emit_enter(compiler, args, temporaries, generals, local_size); |
| |
| compiler->temporaries = temporaries; |
| compiler->generals = generals; |
| |
| /* Push general registers, temporary registers |
| stmdb sp!, {..., lr} */ |
| push = PUSH | (1 << 14); |
| if (temporaries >= 5) |
| push |= 1 << 11; |
| if (temporaries >= 4) |
| push |= 1 << 10; |
| if (generals >= 5) |
| push |= 1 << 8; |
| if (generals >= 4) |
| push |= 1 << 7; |
| if (generals >= 3) |
| push |= 1 << 6; |
| if (generals >= 2) |
| push |= 1 << 5; |
| if (generals >= 1) |
| push |= 1 << 4; |
| EMIT_INSTRUCTION(push); |
| |
| /* Stack must be aligned to 8 bytes: */ |
| size = (1 + generals) * sizeof(sljit_uw); |
| if (temporaries >= 4) |
| size += (temporaries - 3) * sizeof(sljit_uw); |
| local_size += size; |
| local_size = (local_size + 7) & ~7; |
| local_size -= size; |
| compiler->local_size = local_size; |
| if (local_size > 0) |
| FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, local_size)); |
| |
| if (args >= 1) |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG1, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG1))); |
| if (args >= 2) |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG2, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG2))); |
| if (args >= 3) |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG3, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG3))); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_fake_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size) |
| { |
| int size; |
| |
| CHECK_ERROR_VOID(); |
| check_sljit_fake_enter(compiler, args, temporaries, generals, local_size); |
| |
| compiler->temporaries = temporaries; |
| compiler->generals = generals; |
| |
| size = (1 + generals) * sizeof(sljit_uw); |
| if (temporaries >= 4) |
| size += (temporaries - 3) * sizeof(sljit_uw); |
| local_size += size; |
| local_size = (local_size + 7) & ~7; |
| local_size -= size; |
| compiler->local_size = local_size; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int src, sljit_w srcw) |
| { |
| sljit_uw pop; |
| |
| CHECK_ERROR(); |
| check_sljit_emit_return(compiler, src, srcw); |
| |
| if (src != SLJIT_UNUSED && src != SLJIT_RETURN_REG) |
| FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, SLJIT_RETURN_REG, 0, TMP_REG1, 0, src, srcw)); |
| |
| if (compiler->local_size > 0) |
| FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, compiler->local_size)); |
| |
| pop = POP | (1 << 15); |
| /* Push general registers, temporary registers |
| ldmia sp!, {..., pc} */ |
| if (compiler->temporaries >= 5) |
| pop |= 1 << 11; |
| if (compiler->temporaries >= 4) |
| pop |= 1 << 10; |
| if (compiler->generals >= 5) |
| pop |= 1 << 8; |
| if (compiler->generals >= 4) |
| pop |= 1 << 7; |
| if (compiler->generals >= 3) |
| pop |= 1 << 6; |
| if (compiler->generals >= 2) |
| pop |= 1 << 5; |
| if (compiler->generals >= 1) |
| pop |= 1 << 4; |
| |
| return push_inst(compiler, pop); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Operators */ |
| /* --------------------------------------------------------------------- */ |
| |
| /* s/l - store/load (1 bit) |
| u/s - signed/unsigned (1 bit) |
| w/b/h/N - word/byte/half/NOT allowed (2 bit) |
| It contans 16 items, but not all are different. */ |
| |
| static sljit_w 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 N */ 0x00000000 /* not allowed */, |
| /* 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, wb, target, base1, base2) \ |
| (data_transfer_insts[(type) >> 4] | ((add) << 23) | ((wb) << 21) | (reg_map[target] << 12) | (reg_map[base1] << 16) | (base2)) |
| /* Normal ldr/str instruction. |
| Type2: ldrsb, ldrh, ldrsh */ |
| #define IS_TYPE1_TRANSFER(type) \ |
| (data_transfer_insts[(type) >> 4] & 0x04000000) |
| #define TYPE2_TRANSFER_IMM(imm) \ |
| (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22)) |
| |
| /* flags: */ |
| /* Arguments are swapped. */ |
| #define ARGS_SWAPPED 0x01 |
| /* Inverted immediate. */ |
| #define INV_IMM 0x02 |
| /* Source and destination is register. */ |
| #define REG_DEST 0x04 |
| #define REG_SOURCE 0x08 |
| /* One instruction is enough. */ |
| #define FAST_DEST 0x10 |
| /* Multiple instructions are required. */ |
| #define SLOW_DEST 0x20 |
| /* 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_DATA_PROCESS_INS_AND_RETURN(opcode) \ |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2))) |
| |
| #define EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(opcode, dst, src1, src2) \ |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, src2)) |
| |
| #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)); \ |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (compiler->shift_imm << 7) | (opcode << 5) | reg_map[src2])); \ |
| } \ |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (reg_map[(flags & ARGS_SWAPPED) ? src1 : src2] << 8) | (opcode << 5) | 0x10 | ((flags & ARGS_SWAPPED) ? reg_map[src2] : reg_map[src1]))); |
| |
| static SLJIT_INLINE int emit_single_op(struct sljit_compiler *compiler, int op, int flags, |
| int dst, int src1, int src2) |
| { |
| sljit_w mul_inst; |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_ADD: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| EMIT_DATA_PROCESS_INS_AND_RETURN(ADD_DP); |
| |
| case SLJIT_ADDC: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| EMIT_DATA_PROCESS_INS_AND_RETURN(ADC_DP); |
| |
| case SLJIT_SUB: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| if (!(flags & ARGS_SWAPPED)) |
| EMIT_DATA_PROCESS_INS_AND_RETURN(SUB_DP); |
| EMIT_DATA_PROCESS_INS_AND_RETURN(RSB_DP); |
| |
| case SLJIT_SUBC: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| if (!(flags & ARGS_SWAPPED)) |
| EMIT_DATA_PROCESS_INS_AND_RETURN(SBC_DP); |
| EMIT_DATA_PROCESS_INS_AND_RETURN(RSC_DP); |
| |
| case SLJIT_MUL: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| SLJIT_ASSERT(!(src2 & SRC2_IMM)); |
| if (SLJIT_UNLIKELY(op & SLJIT_SET_O)) |
| mul_inst = SMULL | (reg_map[TMP_REG3] << 16) | (reg_map[dst] << 12); |
| else |
| mul_inst = MUL | (reg_map[dst] << 16); |
| |
| if (dst != src2) |
| FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src1] << 8) | reg_map[src2])); |
| else if (dst != src1) |
| FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[src1])); |
| else { |
| /* Rm and Rd must not be the same register. */ |
| SLJIT_ASSERT(dst != TMP_REG1); |
| FAIL_IF(push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, reg_map[src2]))); |
| FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[TMP_REG1])); |
| } |
| |
| if (!(op & SLJIT_SET_O)) |
| return SLJIT_SUCCESS; |
| |
| /* We need to use TMP_REG3. */ |
| compiler->cache_arg = 0; |
| compiler->cache_argw = 0; |
| /* cmp TMP_REG2, dst asr #31. */ |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, SET_FLAGS, SLJIT_UNUSED, TMP_REG3, RM(dst) | 0xfc0)); |
| |
| case SLJIT_AND: |
| if (!(flags & INV_IMM)) |
| EMIT_DATA_PROCESS_INS_AND_RETURN(AND_DP); |
| EMIT_DATA_PROCESS_INS_AND_RETURN(BIC_DP); |
| |
| case SLJIT_OR: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| EMIT_DATA_PROCESS_INS_AND_RETURN(ORR_DP); |
| |
| case SLJIT_XOR: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| EMIT_DATA_PROCESS_INS_AND_RETURN(EOR_DP); |
| |
| 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); |
| |
| case SLJIT_MOV: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| if (dst != src2) { |
| if (src2 & SRC2_IMM) { |
| if (flags & INV_IMM) |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2); |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2); |
| } |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, reg_map[src2]); |
| } |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_MOV_UB: |
| case SLJIT_MOV_SB: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| if (op == SLJIT_MOV_UB) |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(AND_DP, 0, dst, src2, SRC2_IMM | 0xff)); |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | reg_map[src2])); |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | (op == SLJIT_MOV_UB ? 0x20 : 0x40) | reg_map[dst])); |
| #else |
| return push_inst(compiler, (op == SLJIT_MOV_UB ? UXTB : SXTB) | RD(dst) | RM(src2)); |
| #endif |
| } |
| else if (dst != src2) { |
| SLJIT_ASSERT(src2 & SRC2_IMM); |
| if (flags & INV_IMM) |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2); |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2); |
| } |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_MOV_UH: |
| case SLJIT_MOV_SH: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) { |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | reg_map[src2])); |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | (op == SLJIT_MOV_UH ? 0x20 : 0x40) | reg_map[dst])); |
| #else |
| return push_inst(compiler, (op == SLJIT_MOV_UH ? UXTH : SXTH) | RD(dst) | RM(src2)); |
| #endif |
| } |
| else if (dst != src2) { |
| SLJIT_ASSERT(src2 & SRC2_IMM); |
| if (flags & INV_IMM) |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2); |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2); |
| } |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_NOT: |
| if (src2 & SRC2_IMM) { |
| if (flags & INV_IMM) |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2); |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2); |
| } |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, 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))); |
| if (flags & SET_FLAGS) |
| EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(CMP_DP, SLJIT_UNUSED, dst, SRC2_IMM); |
| return SLJIT_SUCCESS; |
| } |
| SLJIT_ASSERT_STOP(); |
| return SLJIT_SUCCESS; |
| } |
| |
| #undef EMIT_DATA_PROCESS_INS_AND_RETURN |
| #undef EMIT_FULL_DATA_PROCESS_INS_AND_RETURN |
| #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_immediate(sljit_uw imm) |
| { |
| int 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 int generate_int(struct sljit_compiler *compiler, int reg, sljit_uw imm, int positive) |
| { |
| sljit_uw mask; |
| sljit_uw imm1; |
| sljit_uw imm2; |
| int 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; |
| } |
| |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? MOV_DP : MVN_DP, 0, reg, SLJIT_UNUSED, imm1)); |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? ORR_DP : BIC_DP, 0, reg, reg, imm2)); |
| return 1; |
| } |
| #endif |
| |
| static int load_immediate(struct sljit_compiler *compiler, int 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_immediate(imm); |
| if (tmp) { |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, tmp)); |
| return SLJIT_SUCCESS; |
| } |
| |
| tmp = get_immediate(~imm); |
| if (tmp) { |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, tmp)); |
| return SLJIT_SUCCESS; |
| } |
| |
| #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_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), imm); |
| #else |
| return emit_imm(compiler, reg, imm); |
| #endif |
| } |
| |
| /* Can perform an operation using at most 1 instruction. */ |
| static int getput_arg_fast(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw) |
| { |
| sljit_uw imm; |
| |
| if (arg & SLJIT_IMM) { |
| imm = get_immediate(argw); |
| if (imm) { |
| if (inp_flags & ARG_TEST) |
| return 1; |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, imm)); |
| return -1; |
| } |
| imm = get_immediate(~argw); |
| if (imm) { |
| if (inp_flags & ARG_TEST) |
| return 1; |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, imm)); |
| return -1; |
| } |
| return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0; |
| } |
| |
| SLJIT_ASSERT(arg & SLJIT_MEM); |
| |
| /* Fast loads/stores. */ |
| if (arg & 0xf) { |
| if (!(arg & 0xf0)) { |
| if (IS_TYPE1_TRANSFER(inp_flags)) { |
| if (argw >= 0 && argw <= 0xfff) { |
| if (inp_flags & ARG_TEST) |
| return 1; |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, argw)); |
| return -1; |
| } |
| if (argw < 0 && argw >= -0xfff) { |
| if (inp_flags & ARG_TEST) |
| return 1; |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, -argw)); |
| return -1; |
| } |
| } |
| else { |
| if (argw >= 0 && argw <= 0xff) { |
| if (inp_flags & ARG_TEST) |
| return 1; |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw))); |
| return -1; |
| } |
| if (argw < 0 && argw >= -0xff) { |
| if (inp_flags & ARG_TEST) |
| return 1; |
| argw = -argw; |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw))); |
| return -1; |
| } |
| } |
| } |
| else if ((argw & 0x3) == 0 || IS_TYPE1_TRANSFER(inp_flags)) { |
| if (inp_flags & ARG_TEST) |
| return 1; |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, |
| RM((arg >> 4) & 0xf) | (IS_TYPE1_TRANSFER(inp_flags) ? SRC2_IMM : 0) | ((argw & 0x3) << 7))); |
| return -1; |
| } |
| } |
| |
| return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0; |
| } |
| |
| /* See getput_arg below. |
| Note: can_cache is called only for binary operators. Those |
| operators always uses word arguments without write back. */ |
| static int can_cache(int arg, sljit_w argw, int next_arg, sljit_w next_argw) |
| { |
| /* Immediate caching is not supported as it would be an operation on constant arguments. */ |
| if (arg & SLJIT_IMM) |
| return 0; |
| |
| /* Always a simple operation. */ |
| if (arg & 0xf0) |
| return 0; |
| |
| if (!(arg & 0xf)) { |
| /* Immediate access. */ |
| if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff)) |
| return 1; |
| return 0; |
| } |
| |
| if (argw <= 0xfffff && argw >= -0xfffff) |
| return 0; |
| |
| if (argw == next_argw && (next_arg & SLJIT_MEM)) |
| return 1; |
| |
| if (arg == next_arg && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff)) |
| return 1; |
| |
| return 0; |
| } |
| |
| #define GETPUT_ARG_DATA_TRANSFER(add, wb, target, base, imm) \ |
| if (max_delta & 0xf00) \ |
| FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, imm))); \ |
| else \ |
| FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, TYPE2_TRANSFER_IMM(imm)))); |
| |
| #define TEST_WRITE_BACK() \ |
| if (inp_flags & WRITE_BACK) { \ |
| tmp_r = arg & 0xf; \ |
| if (reg == tmp_r) { \ |
| /* This can only happen for stores */ \ |
| /* since ldr reg, [reg, ...]! has no meaning */ \ |
| SLJIT_ASSERT(!(inp_flags & LOAD_DATA)); \ |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(reg))); \ |
| reg = TMP_REG3; \ |
| } \ |
| } |
| |
| /* Emit the necessary instructions. See can_cache above. */ |
| static int getput_arg(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw, int next_arg, sljit_w next_argw) |
| { |
| int tmp_r; |
| sljit_w max_delta; |
| sljit_w sign; |
| |
| if (arg & SLJIT_IMM) { |
| SLJIT_ASSERT(inp_flags & LOAD_DATA); |
| return load_immediate(compiler, reg, argw); |
| } |
| |
| SLJIT_ASSERT(arg & SLJIT_MEM); |
| |
| tmp_r = (inp_flags & LOAD_DATA) ? reg : TMP_REG3; |
| max_delta = IS_TYPE1_TRANSFER(inp_flags) ? 0xfff : 0xff; |
| |
| if ((arg & 0xf) == SLJIT_UNUSED) { |
| /* Write back is not used. */ |
| if ((compiler->cache_arg & SLJIT_IMM) && (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta || ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta)) { |
| if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) { |
| sign = 1; |
| argw = argw - compiler->cache_argw; |
| } |
| else { |
| sign = 0; |
| argw = compiler->cache_argw - argw; |
| } |
| |
| if (max_delta & 0xf00) { |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, argw)); |
| } |
| else { |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, TYPE2_TRANSFER_IMM(argw))); |
| } |
| return SLJIT_SUCCESS; |
| } |
| |
| /* With write back, we can create some sophisticated loads, but |
| it is hard to decide whether we should convert downward (0s) or upward (1s). */ |
| if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) { |
| SLJIT_ASSERT(inp_flags & LOAD_DATA); |
| |
| compiler->cache_arg = SLJIT_IMM; |
| compiler->cache_argw = argw; |
| tmp_r = TMP_REG3; |
| } |
| |
| FAIL_IF(load_immediate(compiler, tmp_r, argw)); |
| GETPUT_ARG_DATA_TRANSFER(1, 0, reg, tmp_r, 0); |
| return SLJIT_SUCCESS; |
| } |
| |
| /* Extended imm addressing for [reg+imm] format. */ |
| sign = (max_delta << 8) | 0xff; |
| if (!(arg & 0xf0) && argw <= sign && argw >= -sign) { |
| TEST_WRITE_BACK(); |
| if (argw >= 0) { |
| sign = 1; |
| } |
| else { |
| sign = 0; |
| argw = -argw; |
| } |
| |
| /* Optimization: add is 0x4, sub is 0x2. Sign is 1 for add and 0 for sub. */ |
| if (max_delta & 0xf00) |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 12) | 0xa00)); |
| else |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 8) | 0xc00)); |
| |
| argw &= max_delta; |
| GETPUT_ARG_DATA_TRANSFER(sign, inp_flags & WRITE_BACK, reg, tmp_r, argw); |
| return SLJIT_SUCCESS; |
| } |
| |
| if (arg & 0xf0) { |
| SLJIT_ASSERT((argw & 0x3) && !(max_delta & 0xf00)); |
| if (inp_flags & WRITE_BACK) |
| tmp_r = arg & 0xf; |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7))); |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, 0, reg, tmp_r, TYPE2_TRANSFER_IMM(0))); |
| return SLJIT_SUCCESS; |
| } |
| |
| if (compiler->cache_arg == arg && ((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) { |
| SLJIT_ASSERT(!(inp_flags & WRITE_BACK)); |
| argw = argw - compiler->cache_argw; |
| GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, argw); |
| return SLJIT_SUCCESS; |
| } |
| |
| if (compiler->cache_arg == arg && ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta) { |
| SLJIT_ASSERT(!(inp_flags & WRITE_BACK)); |
| argw = compiler->cache_argw - argw; |
| GETPUT_ARG_DATA_TRANSFER(0, 0, reg, TMP_REG3, argw); |
| return SLJIT_SUCCESS; |
| } |
| |
| if ((compiler->cache_arg & SLJIT_IMM) && compiler->cache_argw == argw) { |
| TEST_WRITE_BACK(); |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0))); |
| return SLJIT_SUCCESS; |
| } |
| |
| if (argw == next_argw && (next_arg & SLJIT_MEM)) { |
| SLJIT_ASSERT(inp_flags & LOAD_DATA); |
| FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); |
| |
| compiler->cache_arg = SLJIT_IMM; |
| compiler->cache_argw = argw; |
| |
| TEST_WRITE_BACK(); |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0))); |
| return SLJIT_SUCCESS; |
| } |
| |
| if (arg == next_arg && !(inp_flags & WRITE_BACK) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) { |
| SLJIT_ASSERT(inp_flags & LOAD_DATA); |
| FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, TMP_REG3, reg_map[arg & 0xf])); |
| |
| compiler->cache_arg = arg; |
| compiler->cache_argw = argw; |
| |
| GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, 0); |
| return SLJIT_SUCCESS; |
| } |
| |
| if ((arg & 0xf) == tmp_r) { |
| compiler->cache_arg = SLJIT_IMM; |
| compiler->cache_argw = argw; |
| tmp_r = TMP_REG3; |
| } |
| |
| FAIL_IF(load_immediate(compiler, tmp_r, argw)); |
| EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, reg_map[tmp_r] | (max_delta & 0xf00 ? SRC2_IMM : 0))); |
| return SLJIT_SUCCESS; |
| } |
| |
| static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags, |
| int dst, sljit_w dstw, |
| int src1, sljit_w src1w, |
| int src2, sljit_w src2w) |
| { |
| /* arg1 goes to TMP_REG1 or src reg |
| arg2 goes to TMP_REG2, imm or src reg |
| TMP_REG3 can be used for caching |
| result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */ |
| |
| /* We prefers register and simple consts. */ |
| int dst_r; |
| int src1_r; |
| int src2_r = 0; |
| int sugg_src2_r = TMP_REG2; |
| int flags = GET_FLAGS(op) ? SET_FLAGS : 0; |
| |
| compiler->cache_arg = 0; |
| compiler->cache_argw = 0; |
| |
| /* Destination check. */ |
| if (dst >= SLJIT_TEMPORARY_REG1 && dst <= TMP_REG3) { |
| dst_r = dst; |
| flags |= REG_DEST; |
| if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI) |
| sugg_src2_r = dst_r; |
| } |
| else if (dst == SLJIT_UNUSED) { |
| if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM)) |
| return SLJIT_SUCCESS; |
| dst_r = TMP_REG2; |
| } |
| else { |
| SLJIT_ASSERT(dst & SLJIT_MEM); |
| if (getput_arg_fast(compiler, inp_flags | ARG_TEST, TMP_REG2, dst, dstw)) { |
| flags |= FAST_DEST; |
| dst_r = TMP_REG2; |
| } |
| else { |
| flags |= SLOW_DEST; |
| dst_r = 0; |
| } |
| } |
| |
| /* Source 1. */ |
| if (src1 >= SLJIT_TEMPORARY_REG1 && src1 <= TMP_REG3) |
| src1_r = src1; |
| else if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) { |
| flags |= ARGS_SWAPPED; |
| src1_r = src2; |
| src2 = src1; |
| src2w = src1w; |
| } |
| else { |
| if ((inp_flags & ALLOW_ANY_IMM) && (src1 & SLJIT_IMM)) { |
| /* The second check will generate a hit. */ |
| src2_r = get_immediate(src1w); |
| if (src2_r) { |
| flags |= ARGS_SWAPPED; |
| src1 = src2; |
| src1w = src2w; |
| } |
| if (inp_flags & ALLOW_INV_IMM) { |
| src2_r = get_immediate(~src1w); |
| if (src2_r) { |
| flags |= ARGS_SWAPPED | INV_IMM; |
| src1 = src2; |
| src1w = src2w; |
| } |
| } |
| } |
| |
| src1_r = 0; |
| if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w)) { |
| FAIL_IF(compiler->error); |
| src1_r = TMP_REG1; |
| } |
| } |
| |
| /* Source 2. */ |
| if (src2_r == 0) { |
| if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) { |
| src2_r = src2; |
| flags |= REG_SOURCE; |
| if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI) |
| dst_r = src2_r; |
| } |
| else do { /* do { } while(0) is used because of breaks. */ |
| if ((inp_flags & ALLOW_ANY_IMM) && (src2 & SLJIT_IMM)) { |
| src2_r = get_immediate(src2w); |
| if (src2_r) |
| break; |
| if (inp_flags & ALLOW_INV_IMM) { |
| src2_r = get_immediate(~src2w); |
| if (src2_r) { |
| flags |= INV_IMM; |
| break; |
| } |
| } |
| } |
| |
| /* src2_r is 0. */ |
| if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w)) { |
| FAIL_IF(compiler->error); |
| src2_r = sugg_src2_r; |
| } |
| } while (0); |
| } |
| |
| /* src1_r, src2_r and dst_r can be zero (=unprocessed) or non-zero. |
| If they are zero, they must not be registers. */ |
| if (src1_r == 0 && src2_r == 0 && dst_r == 0) { |
| if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) { |
| SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); |
| flags |= ARGS_SWAPPED; |
| FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src2, src2w, src1, src1w)); |
| FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src1, src1w, dst, dstw)); |
| } |
| else { |
| FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w)); |
| FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src2, src2w, dst, dstw)); |
| } |
| src1_r = TMP_REG1; |
| src2_r = TMP_REG2; |
| } |
| else if (src1_r == 0 && src2_r == 0) { |
| FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w)); |
| src1_r = TMP_REG1; |
| } |
| else if (src1_r == 0 && dst_r == 0) { |
| FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, dst, dstw)); |
| src1_r = TMP_REG1; |
| } |
| else if (src2_r == 0 && dst_r == 0) { |
| FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, dst, dstw)); |
| src2_r = sugg_src2_r; |
| } |
| |
| if (dst_r == 0) |
| dst_r = TMP_REG2; |
| |
| if (src1_r == 0) { |
| FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, 0, 0)); |
| src1_r = TMP_REG1; |
| } |
| |
| if (src2_r == 0) { |
| FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, 0, 0)); |
| src2_r = sugg_src2_r; |
| } |
| |
| FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r)); |
| |
| if (flags & (FAST_DEST | SLOW_DEST)) { |
| if (flags & FAST_DEST) |
| FAIL_IF(getput_arg_fast(compiler, inp_flags, dst_r, dst, dstw)); |
| else |
| FAIL_IF(getput_arg(compiler, inp_flags, dst_r, dst, dstw, 0, 0)); |
| } |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op) |
| { |
| CHECK_ERROR(); |
| check_sljit_emit_op0(compiler, op); |
| |
| op = GET_OPCODE(op); |
| switch (op) { |
| case SLJIT_BREAKPOINT: |
| EMIT_INSTRUCTION(DEBUGGER); |
| break; |
| case SLJIT_NOP: |
| EMIT_INSTRUCTION(NOP); |
| break; |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op, |
| int dst, sljit_w dstw, |
| int src, sljit_w srcw) |
| { |
| CHECK_ERROR(); |
| check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw); |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_MOV: |
| case SLJIT_MOV_UI: |
| case SLJIT_MOV_SI: |
| return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw); |
| |
| case SLJIT_MOV_UB: |
| return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw); |
| |
| case SLJIT_MOV_SB: |
| return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw); |
| |
| case SLJIT_MOV_UH: |
| return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw); |
| |
| case SLJIT_MOV_SH: |
| return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw); |
| |
| case SLJIT_MOVU: |
| case SLJIT_MOVU_UI: |
| case SLJIT_MOVU_SI: |
| return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw); |
| |
| case SLJIT_MOVU_UB: |
| return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw); |
| |
| case SLJIT_MOVU_SB: |
| return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw); |
| |
| case SLJIT_MOVU_UH: |
| return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw); |
| |
| case SLJIT_MOVU_SH: |
| return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)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_DEBUG && SLJIT_DEBUG) |
| compiler->skip_checks = 1; |
| #endif |
| return sljit_emit_op2(compiler, SLJIT_SUB | GET_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 int sljit_emit_op2(struct sljit_compiler *compiler, int op, |
| int dst, sljit_w dstw, |
| int src1, sljit_w src1w, |
| int src2, sljit_w src2w) |
| { |
| CHECK_ERROR(); |
| check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w); |
| |
| 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; |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Floating point operators */ |
| /* --------------------------------------------------------------------- */ |
| |
| #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| |
| /* 0 - no fpu |
| 1 - vfp */ |
| static int arm_fpu_type = -1; |
| |
| static void init_compiler() |
| { |
| if (arm_fpu_type != -1) |
| return; |
| |
| /* TODO: Only the OS can help to determine the correct fpu type. */ |
| arm_fpu_type = 1; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void) |
| { |
| if (arm_fpu_type == -1) |
| init_compiler(); |
| return arm_fpu_type; |
| } |
| |
| #else |
| |
| #define arm_fpu_type 1 |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void) |
| { |
| /* Always available. */ |
| return 1; |
| } |
| |
| #endif |
| |
| #define EMIT_FPU_DATA_TRANSFER(add, load, base, freg, offs) \ |
| (VSTR | ((add) << 23) | ((load) << 20) | (reg_map[base] << 16) | (freg << 12) | (offs)) |
| #define EMIT_FPU_OPERATION(opcode, dst, src1, src2) \ |
| ((opcode) | ((dst) << 12) | (src1) | ((src2) << 16)) |
| |
| static int emit_fpu_data_transfer(struct sljit_compiler *compiler, int fpu_reg, int load, int arg, sljit_w argw) |
| { |
| SLJIT_ASSERT(arg & SLJIT_MEM); |
| |
| /* Fast loads and stores. */ |
| if ((arg & 0xf) && !(arg & 0xf0) && (argw & 0x3) == 0) { |
| if (argw >= 0 && argw <= 0x3ff) { |
| EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, arg & 0xf, fpu_reg, argw >> 2)); |
| return SLJIT_SUCCESS; |
| } |
| if (argw < 0 && argw >= -0x3ff) { |
| EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, arg & 0xf, fpu_reg, (-argw) >> 2)); |
| return SLJIT_SUCCESS; |
| } |
| if (argw >= 0 && argw <= 0x3ffff) { |
| SLJIT_ASSERT(get_immediate(argw & 0x3fc00)); |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00))); |
| argw &= 0x3ff; |
| EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, argw >> 2)); |
| return SLJIT_SUCCESS; |
| } |
| if (argw < 0 && argw >= -0x3ffff) { |
| argw = -argw; |
| SLJIT_ASSERT(get_immediate(argw & 0x3fc00)); |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00))); |
| argw &= 0x3ff; |
| EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG1, fpu_reg, argw >> 2)); |
| return SLJIT_SUCCESS; |
| } |
| } |
| |
| if (arg & 0xf0) { |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7))); |
| EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, 0)); |
| return SLJIT_SUCCESS; |
| } |
| |
| if (compiler->cache_arg == arg && ((argw - compiler->cache_argw) & 0x3) == 0) { |
| if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= 0x3ff) { |
| EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, (argw - compiler->cache_argw) >> 2)); |
| return SLJIT_SUCCESS; |
| } |
| if (((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= 0x3ff) { |
| EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG3, fpu_reg, (compiler->cache_argw - argw) >> 2)); |
| return SLJIT_SUCCESS; |
| } |
| } |
| |
| compiler->cache_arg = arg; |
| compiler->cache_argw = argw; |
| if (arg & 0xf) { |
| FAIL_IF(load_immediate(compiler, TMP_REG1, argw)); |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, arg & 0xf, reg_map[TMP_REG1])); |
| } |
| else |
| FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); |
| |
| EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, 0)); |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op, |
| int dst, sljit_w dstw, |
| int src, sljit_w srcw) |
| { |
| int dst_freg; |
| |
| CHECK_ERROR(); |
| check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw); |
| |
| compiler->cache_arg = 0; |
| compiler->cache_argw = 0; |
| |
| if (GET_OPCODE(op) == SLJIT_FCMP) { |
| if (dst > SLJIT_FLOAT_REG4) { |
| FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, dst, dstw)); |
| dst = TMP_FREG1; |
| } |
| if (src > SLJIT_FLOAT_REG4) { |
| FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src, srcw)); |
| src = TMP_FREG2; |
| } |
| EMIT_INSTRUCTION(VCMP_F64 | (dst << 12) | src); |
| EMIT_INSTRUCTION(VMRS); |
| return SLJIT_SUCCESS; |
| } |
| |
| dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst; |
| |
| if (src > SLJIT_FLOAT_REG4) { |
| FAIL_IF(emit_fpu_data_transfer(compiler, dst_freg, 1, src, srcw)); |
| src = dst_freg; |
| } |
| |
| switch (op) { |
| case SLJIT_FMOV: |
| if (src != dst_freg && dst_freg != TMP_FREG1) |
| EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMOV_F64, dst_freg, src, 0)); |
| break; |
| case SLJIT_FNEG: |
| EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VNEG_F64, dst_freg, src, 0)); |
| break; |
| case SLJIT_FABS: |
| EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VABS_F64, dst_freg, src, 0)); |
| break; |
| } |
| |
| if (dst_freg == TMP_FREG1) |
| FAIL_IF(emit_fpu_data_transfer(compiler, src, 0, dst, dstw)); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op, |
| int dst, sljit_w dstw, |
| int src1, sljit_w src1w, |
| int src2, sljit_w src2w) |
| { |
| int dst_freg; |
| |
| CHECK_ERROR(); |
| check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w); |
| |
| compiler->cache_arg = 0; |
| compiler->cache_argw = 0; |
| |
| dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst; |
| |
| if (src2 > SLJIT_FLOAT_REG4) { |
| FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src2, src2w)); |
| src2 = TMP_FREG2; |
| } |
| |
| if (src1 > SLJIT_FLOAT_REG4) { |
| FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, src1, src1w)); |
| src1 = TMP_FREG1; |
| } |
| |
| switch (op) { |
| case SLJIT_FADD: |
| EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VADD_F64, dst_freg, src2, src1)); |
| break; |
| |
| case SLJIT_FSUB: |
| EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VSUB_F64, dst_freg, src2, src1)); |
| break; |
| |
| case SLJIT_FMUL: |
| EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMUL_F64, dst_freg, src2, src1)); |
| break; |
| |
| case SLJIT_FDIV: |
| EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VDIV_F64, dst_freg, src2, src1)); |
| break; |
| } |
| |
| if (dst_freg == TMP_FREG1) |
| FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 0, dst, dstw)); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Other instructions */ |
| /* --------------------------------------------------------------------- */ |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_enter(struct sljit_compiler *compiler, int dst, sljit_w dstw, int args, int temporaries, int generals, int local_size) |
| { |
| int size; |
| |
| CHECK_ERROR(); |
| check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, generals, local_size); |
| |
| compiler->temporaries = temporaries; |
| compiler->generals = generals; |
| |
| size = (1 + generals) * sizeof(sljit_uw); |
| if (temporaries >= 4) |
| size += (temporaries - 3) * sizeof(sljit_uw); |
| local_size += size; |
| local_size = (local_size + 7) & ~7; |
| local_size -= size; |
| compiler->local_size = local_size; |
| |
| if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, RM(TMP_REG3))); |
| else if (dst & SLJIT_MEM) { |
| if (getput_arg_fast(compiler, WORD_DATA, TMP_REG3, dst, dstw)) |
| return compiler->error; |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG2, SLJIT_UNUSED, RM(TMP_REG3))); |
| compiler->cache_arg = 0; |
| compiler->cache_argw = 0; |
| return getput_arg(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0); |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw) |
| { |
| CHECK_ERROR(); |
| check_sljit_emit_fast_return(compiler, src, srcw); |
| |
| if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS) |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(src))); |
| else if (src & SLJIT_MEM) { |
| if (getput_arg_fast(compiler, WORD_DATA | LOAD_DATA, TMP_REG3, src, srcw)) |
| FAIL_IF(compiler->error); |
| else { |
| compiler->cache_arg = 0; |
| compiler->cache_argw = 0; |
| FAIL_IF(getput_arg(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw, 0, 0)); |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(TMP_REG2))); |
| } |
| } |
| else if (src & SLJIT_IMM) |
| FAIL_IF(load_immediate(compiler, TMP_REG3, srcw)); |
| return push_inst(compiler, BLX | RM(TMP_REG3)); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Conditional instructions */ |
| /* --------------------------------------------------------------------- */ |
| |
| static sljit_uw get_cc(int type) |
| { |
| switch (type) { |
| case SLJIT_C_EQUAL: |
| case SLJIT_C_MUL_NOT_OVERFLOW: |
| case SLJIT_C_FLOAT_EQUAL: |
| return 0x00000000; |
| |
| case SLJIT_C_NOT_EQUAL: |
| case SLJIT_C_MUL_OVERFLOW: |
| case SLJIT_C_FLOAT_NOT_EQUAL: |
| return 0x10000000; |
| |
| case SLJIT_C_LESS: |
| case SLJIT_C_FLOAT_LESS: |
| return 0x30000000; |
| |
| case SLJIT_C_GREATER_EQUAL: |
| case SLJIT_C_FLOAT_GREATER_EQUAL: |
| return 0x20000000; |
| |
| case SLJIT_C_GREATER: |
| case SLJIT_C_FLOAT_GREATER: |
| return 0x80000000; |
| |
| case SLJIT_C_LESS_EQUAL: |
| case SLJIT_C_FLOAT_LESS_EQUAL: |
| return 0x90000000; |
| |
| case SLJIT_C_SIG_LESS: |
| return 0xb0000000; |
| |
| case SLJIT_C_SIG_GREATER_EQUAL: |
| return 0xa0000000; |
| |
| case SLJIT_C_SIG_GREATER: |
| return 0xc0000000; |
| |
| case SLJIT_C_SIG_LESS_EQUAL: |
| return 0xd0000000; |
| |
| case SLJIT_C_OVERFLOW: |
| case SLJIT_C_FLOAT_NAN: |
| return 0x60000000; |
| |
| case SLJIT_C_NOT_OVERFLOW: |
| case SLJIT_C_FLOAT_NOT_NAN: |
| return 0x70000000; |
| |
| default: /* SLJIT_JUMP */ |
| return 0xe0000000; |
| } |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler) |
| { |
| struct sljit_label *label; |
| |
| CHECK_ERROR_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, int type) |
| { |
| struct sljit_jump *jump; |
| |
| CHECK_ERROR_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; |
| |
| /* In ARM, we don't need to touch the arguments. */ |
| #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_DATA | LOAD_DATA, 1, 0, |
| 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; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_ijump(struct sljit_compiler *compiler, int type, int src, sljit_w srcw) |
| { |
| struct sljit_jump *jump; |
| |
| CHECK_ERROR(); |
| check_sljit_emit_ijump(compiler, type, src, srcw); |
| |
| /* In ARM, we don't need to touch the arguments. */ |
| if (src & SLJIT_IMM) { |
| 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_DATA | LOAD_DATA, 1, 0, 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; |
| } |
| else { |
| if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS) |
| return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src)); |
| |
| SLJIT_ASSERT(src & SLJIT_MEM); |
| FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, TMP_REG2, 0, TMP_REG1, 0, src, srcw)); |
| return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG2)); |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_cond_value(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int type) |
| { |
| int reg; |
| sljit_uw cc; |
| |
| CHECK_ERROR(); |
| check_sljit_emit_cond_value(compiler, op, dst, dstw, type); |
| |
| if (dst == SLJIT_UNUSED) |
| return SLJIT_SUCCESS; |
| |
| cc = get_cc(type); |
| if (GET_OPCODE(op) == SLJIT_OR) { |
| if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) { |
| EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ORR_DP, 0, dst, dst, SRC2_IMM | 1) & ~COND_MASK) | cc); |
| if (op & SLJIT_SET_E) |
| return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst))); |
| return SLJIT_SUCCESS; |
| } |
| |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 0)); |
| EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc); |
| #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG) |
| compiler->skip_checks = 1; |
| #endif |
| return emit_op(compiler, op, ALLOW_IMM, dst, dstw, TMP_REG1, 0, dst, dstw); |
| } |
| |
| reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2; |
| |
| EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 0)); |
| EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc); |
| |
| if (reg == TMP_REG2) |
| return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0); |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, int dst, sljit_w dstw, sljit_w init_value) |
| { |
| struct sljit_const *const_; |
| int reg; |
| |
| CHECK_ERROR_PTR(); |
| check_sljit_emit_const(compiler, dst, dstw, init_value); |
| |
| const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const)); |
| PTR_FAIL_IF(!const_); |
| |
| reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? 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_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), init_value)); |
| compiler->patches++; |
| #else |
| PTR_FAIL_IF(emit_imm(compiler, reg, init_value)); |
| #endif |
| set_const(const_, compiler); |
| |
| if (reg == TMP_REG2 && dst != SLJIT_UNUSED) |
| if (emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0)) |
| return NULL; |
| return const_; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr) |
| { |
| inline_set_jump_addr(addr, new_addr, 1); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant) |
| { |
| inline_set_const(addr, new_constant, 1); |
| } |