| /* |
| * Stack-less Just-In-Time compiler |
| * |
| * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without modification, are |
| * permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, this list of |
| * conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright notice, this list |
| * of conditions and the following disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
| * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void) |
| { |
| #ifdef __SOFTFP__ |
| return "ARM-Thumb2" SLJIT_CPUINFO " ABI:softfp"; |
| #else |
| return "ARM-Thumb2" SLJIT_CPUINFO " ABI:hardfp"; |
| #endif |
| } |
| |
| /* Length of an instruction word. */ |
| typedef sljit_u32 sljit_ins; |
| |
| /* Last register + 1. */ |
| #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2) |
| #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3) |
| #define TMP_PC (SLJIT_NUMBER_OF_REGISTERS + 4) |
| |
| #define TMP_FREG1 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1) |
| #define TMP_FREG2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2) |
| |
| /* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */ |
| static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = { |
| 0, 0, 1, 2, 3, 11, 10, 9, 8, 7, 6, 5, 4, 13, 12, 14, 15 |
| }; |
| |
| static const sljit_u8 freg_map[SLJIT_NUMBER_OF_FLOAT_REGISTERS + 3] = { |
| 0, 0, 1, 2, 3, 4, 5, 6, 7 |
| }; |
| |
| #define COPY_BITS(src, from, to, bits) \ |
| ((from >= to ? (src >> (from - to)) : (src << (to - from))) & (((1 << bits) - 1) << to)) |
| |
| /* Thumb16 encodings. */ |
| #define RD3(rd) (reg_map[rd]) |
| #define RN3(rn) (reg_map[rn] << 3) |
| #define RM3(rm) (reg_map[rm] << 6) |
| #define RDN3(rdn) (reg_map[rdn] << 8) |
| #define IMM3(imm) (imm << 6) |
| #define IMM8(imm) (imm) |
| |
| /* Thumb16 helpers. */ |
| #define SET_REGS44(rd, rn) \ |
| ((reg_map[rn] << 3) | (reg_map[rd] & 0x7) | ((reg_map[rd] & 0x8) << 4)) |
| #define IS_2_LO_REGS(reg1, reg2) \ |
| (reg_map[reg1] <= 7 && reg_map[reg2] <= 7) |
| #define IS_3_LO_REGS(reg1, reg2, reg3) \ |
| (reg_map[reg1] <= 7 && reg_map[reg2] <= 7 && reg_map[reg3] <= 7) |
| |
| /* Thumb32 encodings. */ |
| #define RD4(rd) (reg_map[rd] << 8) |
| #define RN4(rn) (reg_map[rn] << 16) |
| #define RM4(rm) (reg_map[rm]) |
| #define RT4(rt) (reg_map[rt] << 12) |
| #define DD4(dd) (freg_map[dd] << 12) |
| #define DN4(dn) (freg_map[dn] << 16) |
| #define DM4(dm) (freg_map[dm]) |
| #define IMM5(imm) \ |
| (COPY_BITS(imm, 2, 12, 3) | ((imm & 0x3) << 6)) |
| #define IMM12(imm) \ |
| (COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff)) |
| |
| /* --------------------------------------------------------------------- */ |
| /* Instrucion forms */ |
| /* --------------------------------------------------------------------- */ |
| |
| /* dot '.' changed to _ |
| I immediate form (possibly followed by number of immediate bits). */ |
| #define ADCI 0xf1400000 |
| #define ADCS 0x4140 |
| #define ADC_W 0xeb400000 |
| #define ADD 0x4400 |
| #define ADDS 0x1800 |
| #define ADDSI3 0x1c00 |
| #define ADDSI8 0x3000 |
| #define ADD_W 0xeb000000 |
| #define ADDWI 0xf2000000 |
| #define ADD_SP 0xb000 |
| #define ADD_W 0xeb000000 |
| #define ADD_WI 0xf1000000 |
| #define ANDI 0xf0000000 |
| #define ANDS 0x4000 |
| #define AND_W 0xea000000 |
| #define ASRS 0x4100 |
| #define ASRSI 0x1000 |
| #define ASR_W 0xfa40f000 |
| #define ASR_WI 0xea4f0020 |
| #define BCC 0xd000 |
| #define BICI 0xf0200000 |
| #define BKPT 0xbe00 |
| #define BLX 0x4780 |
| #define BX 0x4700 |
| #define CLZ 0xfab0f080 |
| #define CMNI_W 0xf1100f00 |
| #define CMP 0x4280 |
| #define CMPI 0x2800 |
| #define CMPI_W 0xf1b00f00 |
| #define CMP_X 0x4500 |
| #define CMP_W 0xebb00f00 |
| #define EORI 0xf0800000 |
| #define EORS 0x4040 |
| #define EOR_W 0xea800000 |
| #define IT 0xbf00 |
| #define LDRI 0xf8500800 |
| #define LSLS 0x4080 |
| #define LSLSI 0x0000 |
| #define LSL_W 0xfa00f000 |
| #define LSL_WI 0xea4f0000 |
| #define LSRS 0x40c0 |
| #define LSRSI 0x0800 |
| #define LSR_W 0xfa20f000 |
| #define LSR_WI 0xea4f0010 |
| #define MOV 0x4600 |
| #define MOVS 0x0000 |
| #define MOVSI 0x2000 |
| #define MOVT 0xf2c00000 |
| #define MOVW 0xf2400000 |
| #define MOV_W 0xea4f0000 |
| #define MOV_WI 0xf04f0000 |
| #define MUL 0xfb00f000 |
| #define MVNS 0x43c0 |
| #define MVN_W 0xea6f0000 |
| #define MVN_WI 0xf06f0000 |
| #define NOP 0xbf00 |
| #define ORNI 0xf0600000 |
| #define ORRI 0xf0400000 |
| #define ORRS 0x4300 |
| #define ORR_W 0xea400000 |
| #define POP 0xbc00 |
| #define POP_W 0xe8bd0000 |
| #define PUSH 0xb400 |
| #define PUSH_W 0xe92d0000 |
| #define RSB_WI 0xf1c00000 |
| #define RSBSI 0x4240 |
| #define SBCI 0xf1600000 |
| #define SBCS 0x4180 |
| #define SBC_W 0xeb600000 |
| #define SDIV 0xfb90f0f0 |
| #define SMULL 0xfb800000 |
| #define STR_SP 0x9000 |
| #define SUBS 0x1a00 |
| #define SUBSI3 0x1e00 |
| #define SUBSI8 0x3800 |
| #define SUB_W 0xeba00000 |
| #define SUBWI 0xf2a00000 |
| #define SUB_SP 0xb080 |
| #define SUB_WI 0xf1a00000 |
| #define SXTB 0xb240 |
| #define SXTB_W 0xfa4ff080 |
| #define SXTH 0xb200 |
| #define SXTH_W 0xfa0ff080 |
| #define TST 0x4200 |
| #define UDIV 0xfbb0f0f0 |
| #define UMULL 0xfba00000 |
| #define UXTB 0xb2c0 |
| #define UXTB_W 0xfa5ff080 |
| #define UXTH 0xb280 |
| #define UXTH_W 0xfa1ff080 |
| #define VABS_F32 0xeeb00ac0 |
| #define VADD_F32 0xee300a00 |
| #define VCMP_F32 0xeeb40a40 |
| #define VCVT_F32_S32 0xeeb80ac0 |
| #define VCVT_F64_F32 0xeeb70ac0 |
| #define VCVT_S32_F32 0xeebd0ac0 |
| #define VDIV_F32 0xee800a00 |
| #define VMOV_F32 0xeeb00a40 |
| #define VMOV 0xee000a10 |
| #define VMOV2 0xec400a10 |
| #define VMRS 0xeef1fa10 |
| #define VMUL_F32 0xee200a00 |
| #define VNEG_F32 0xeeb10a40 |
| #define VSTR_F32 0xed000a00 |
| #define VSUB_F32 0xee300a40 |
| |
| static sljit_s32 push_inst16(struct sljit_compiler *compiler, sljit_ins inst) |
| { |
| sljit_u16 *ptr; |
| SLJIT_ASSERT(!(inst & 0xffff0000)); |
| |
| ptr = (sljit_u16*)ensure_buf(compiler, sizeof(sljit_u16)); |
| FAIL_IF(!ptr); |
| *ptr = inst; |
| compiler->size++; |
| return SLJIT_SUCCESS; |
| } |
| |
| static sljit_s32 push_inst32(struct sljit_compiler *compiler, sljit_ins inst) |
| { |
| sljit_u16 *ptr = (sljit_u16*)ensure_buf(compiler, sizeof(sljit_ins)); |
| FAIL_IF(!ptr); |
| *ptr++ = inst >> 16; |
| *ptr = inst; |
| compiler->size += 2; |
| return SLJIT_SUCCESS; |
| } |
| |
| static SLJIT_INLINE sljit_s32 emit_imm32_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_uw imm) |
| { |
| FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
| | COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))); |
| return push_inst32(compiler, MOVT | RD4(dst) |
| | COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16)); |
| } |
| |
| static SLJIT_INLINE void modify_imm32_const(sljit_u16 *inst, sljit_uw new_imm) |
| { |
| sljit_s32 dst = inst[1] & 0x0f00; |
| SLJIT_ASSERT(((inst[0] & 0xfbf0) == (MOVW >> 16)) && ((inst[2] & 0xfbf0) == (MOVT >> 16)) && dst == (inst[3] & 0x0f00)); |
| inst[0] = (MOVW >> 16) | COPY_BITS(new_imm, 12, 0, 4) | COPY_BITS(new_imm, 11, 10, 1); |
| inst[1] = dst | COPY_BITS(new_imm, 8, 12, 3) | (new_imm & 0xff); |
| inst[2] = (MOVT >> 16) | COPY_BITS(new_imm, 12 + 16, 0, 4) | COPY_BITS(new_imm, 11 + 16, 10, 1); |
| inst[3] = dst | COPY_BITS(new_imm, 8 + 16, 12, 3) | ((new_imm & 0xff0000) >> 16); |
| } |
| |
| static SLJIT_INLINE sljit_s32 detect_jump_type(struct sljit_jump *jump, sljit_u16 *code_ptr, sljit_u16 *code, sljit_sw executable_offset) |
| { |
| sljit_sw diff; |
| |
| if (jump->flags & SLJIT_REWRITABLE_JUMP) |
| return 0; |
| |
| if (jump->flags & JUMP_ADDR) { |
| /* Branch to ARM code is not optimized yet. */ |
| if (!(jump->u.target & 0x1)) |
| return 0; |
| diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2) - executable_offset) >> 1; |
| } |
| else { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2)) >> 1; |
| } |
| |
| if (jump->flags & IS_COND) { |
| SLJIT_ASSERT(!(jump->flags & IS_BL)); |
| if (diff <= 127 && diff >= -128) { |
| jump->flags |= PATCH_TYPE1; |
| return 5; |
| } |
| if (diff <= 524287 && diff >= -524288) { |
| jump->flags |= PATCH_TYPE2; |
| return 4; |
| } |
| /* +1 comes from the prefix IT instruction. */ |
| diff--; |
| if (diff <= 8388607 && diff >= -8388608) { |
| jump->flags |= PATCH_TYPE3; |
| return 3; |
| } |
| } |
| else if (jump->flags & IS_BL) { |
| if (diff <= 8388607 && diff >= -8388608) { |
| jump->flags |= PATCH_BL; |
| return 3; |
| } |
| } |
| else { |
| if (diff <= 1023 && diff >= -1024) { |
| jump->flags |= PATCH_TYPE4; |
| return 4; |
| } |
| if (diff <= 8388607 && diff >= -8388608) { |
| jump->flags |= PATCH_TYPE5; |
| return 3; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static SLJIT_INLINE void set_jump_instruction(struct sljit_jump *jump, sljit_sw executable_offset) |
| { |
| sljit_s32 type = (jump->flags >> 4) & 0xf; |
| sljit_sw diff; |
| sljit_u16 *jump_inst; |
| sljit_s32 s, j1, j2; |
| |
| if (SLJIT_UNLIKELY(type == 0)) { |
| modify_imm32_const((sljit_u16*)jump->addr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target); |
| return; |
| } |
| |
| if (jump->flags & JUMP_ADDR) { |
| SLJIT_ASSERT(jump->u.target & 0x1); |
| diff = ((sljit_sw)jump->u.target - (sljit_sw)(jump->addr + sizeof(sljit_u32)) - executable_offset) >> 1; |
| } |
| else { |
| SLJIT_ASSERT(jump->u.label->addr & 0x1); |
| diff = ((sljit_sw)(jump->u.label->addr) - (sljit_sw)(jump->addr + sizeof(sljit_u32)) - executable_offset) >> 1; |
| } |
| jump_inst = (sljit_u16*)jump->addr; |
| |
| switch (type) { |
| case 1: |
| /* Encoding T1 of 'B' instruction */ |
| SLJIT_ASSERT(diff <= 127 && diff >= -128 && (jump->flags & IS_COND)); |
| jump_inst[0] = 0xd000 | (jump->flags & 0xf00) | (diff & 0xff); |
| return; |
| case 2: |
| /* Encoding T3 of 'B' instruction */ |
| SLJIT_ASSERT(diff <= 524287 && diff >= -524288 && (jump->flags & IS_COND)); |
| jump_inst[0] = 0xf000 | COPY_BITS(jump->flags, 8, 6, 4) | COPY_BITS(diff, 11, 0, 6) | COPY_BITS(diff, 19, 10, 1); |
| jump_inst[1] = 0x8000 | COPY_BITS(diff, 17, 13, 1) | COPY_BITS(diff, 18, 11, 1) | (diff & 0x7ff); |
| return; |
| case 3: |
| SLJIT_ASSERT(jump->flags & IS_COND); |
| *jump_inst++ = IT | ((jump->flags >> 4) & 0xf0) | 0x8; |
| diff--; |
| type = 5; |
| break; |
| case 4: |
| /* Encoding T2 of 'B' instruction */ |
| SLJIT_ASSERT(diff <= 1023 && diff >= -1024 && !(jump->flags & IS_COND)); |
| jump_inst[0] = 0xe000 | (diff & 0x7ff); |
| return; |
| } |
| |
| SLJIT_ASSERT(diff <= 8388607 && diff >= -8388608); |
| |
| /* Really complex instruction form for branches. */ |
| s = (diff >> 23) & 0x1; |
| j1 = (~(diff >> 22) ^ s) & 0x1; |
| j2 = (~(diff >> 21) ^ s) & 0x1; |
| jump_inst[0] = 0xf000 | (s << 10) | COPY_BITS(diff, 11, 0, 10); |
| jump_inst[1] = (j1 << 13) | (j2 << 11) | (diff & 0x7ff); |
| |
| /* The others have a common form. */ |
| if (type == 5) /* Encoding T4 of 'B' instruction */ |
| jump_inst[1] |= 0x9000; |
| else if (type == 6) /* Encoding T1 of 'BL' instruction */ |
| jump_inst[1] |= 0xd000; |
| else |
| SLJIT_UNREACHABLE(); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler) |
| { |
| struct sljit_memory_fragment *buf; |
| sljit_u16 *code; |
| sljit_u16 *code_ptr; |
| sljit_u16 *buf_ptr; |
| sljit_u16 *buf_end; |
| sljit_uw half_count; |
| sljit_uw next_addr; |
| sljit_sw executable_offset; |
| |
| 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); |
| |
| code = (sljit_u16*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_u16)); |
| PTR_FAIL_WITH_EXEC_IF(code); |
| buf = compiler->buf; |
| |
| code_ptr = code; |
| half_count = 0; |
| next_addr = 0; |
| executable_offset = SLJIT_EXEC_OFFSET(code); |
| |
| label = compiler->labels; |
| jump = compiler->jumps; |
| const_ = compiler->consts; |
| put_label = compiler->put_labels; |
| |
| do { |
| buf_ptr = (sljit_u16*)buf->memory; |
| buf_end = buf_ptr + (buf->used_size >> 1); |
| do { |
| *code_ptr = *buf_ptr++; |
| if (next_addr == half_count) { |
| SLJIT_ASSERT(!label || label->size >= half_count); |
| SLJIT_ASSERT(!jump || jump->addr >= half_count); |
| SLJIT_ASSERT(!const_ || const_->addr >= half_count); |
| SLJIT_ASSERT(!put_label || put_label->addr >= half_count); |
| |
| /* These structures are ordered by their address. */ |
| if (label && label->size == half_count) { |
| label->addr = ((sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset)) | 0x1; |
| label->size = code_ptr - code; |
| label = label->next; |
| } |
| if (jump && jump->addr == half_count) { |
| jump->addr = (sljit_uw)code_ptr - ((jump->flags & IS_COND) ? 10 : 8); |
| code_ptr -= detect_jump_type(jump, code_ptr, code, executable_offset); |
| jump = jump->next; |
| } |
| if (const_ && const_->addr == half_count) { |
| const_->addr = (sljit_uw)code_ptr; |
| const_ = const_->next; |
| } |
| if (put_label && put_label->addr == half_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 ++; |
| half_count ++; |
| } while (buf_ptr < buf_end); |
| |
| buf = buf->next; |
| } while (buf); |
| |
| if (label && label->size == half_count) { |
| label->addr = ((sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset)) | 0x1; |
| label->size = code_ptr - code; |
| label = label->next; |
| } |
| |
| SLJIT_ASSERT(!label); |
| SLJIT_ASSERT(!jump); |
| SLJIT_ASSERT(!const_); |
| SLJIT_ASSERT(!put_label); |
| SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size); |
| |
| jump = compiler->jumps; |
| while (jump) { |
| set_jump_instruction(jump, executable_offset); |
| jump = jump->next; |
| } |
| |
| put_label = compiler->put_labels; |
| while (put_label) { |
| modify_imm32_const((sljit_u16 *)put_label->addr, put_label->label->addr); |
| put_label = put_label->next; |
| } |
| |
| compiler->error = SLJIT_ERR_COMPILED; |
| compiler->executable_offset = executable_offset; |
| compiler->executable_size = (code_ptr - code) * sizeof(sljit_u16); |
| |
| code = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(code, executable_offset); |
| code_ptr = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); |
| |
| SLJIT_CACHE_FLUSH(code, code_ptr); |
| /* Set thumb mode flag. */ |
| return (void*)((sljit_uw)code | 0x1); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type) |
| { |
| switch (feature_type) { |
| case SLJIT_HAS_FPU: |
| #ifdef SLJIT_IS_FPU_AVAILABLE |
| return SLJIT_IS_FPU_AVAILABLE; |
| #else |
| /* Available by default. */ |
| return 1; |
| #endif |
| |
| case SLJIT_HAS_CLZ: |
| case SLJIT_HAS_CMOV: |
| case SLJIT_HAS_PREFETCH: |
| return 1; |
| |
| default: |
| return 0; |
| } |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Core code generator functions. */ |
| /* --------------------------------------------------------------------- */ |
| |
| #define INVALID_IMM 0x80000000 |
| static sljit_uw get_imm(sljit_uw imm) |
| { |
| /* Thumb immediate form. */ |
| sljit_s32 counter; |
| |
| if (imm <= 0xff) |
| return imm; |
| |
| if ((imm & 0xffff) == (imm >> 16)) { |
| /* Some special cases. */ |
| if (!(imm & 0xff00)) |
| return (1 << 12) | (imm & 0xff); |
| if (!(imm & 0xff)) |
| return (2 << 12) | ((imm >> 8) & 0xff); |
| if ((imm & 0xff00) == ((imm & 0xff) << 8)) |
| return (3 << 12) | (imm & 0xff); |
| } |
| |
| /* Assembly optimization: count leading zeroes? */ |
| counter = 8; |
| if (!(imm & 0xffff0000)) { |
| counter += 16; |
| imm <<= 16; |
| } |
| if (!(imm & 0xff000000)) { |
| counter += 8; |
| imm <<= 8; |
| } |
| if (!(imm & 0xf0000000)) { |
| counter += 4; |
| imm <<= 4; |
| } |
| if (!(imm & 0xc0000000)) { |
| counter += 2; |
| imm <<= 2; |
| } |
| if (!(imm & 0x80000000)) { |
| counter += 1; |
| imm <<= 1; |
| } |
| /* Since imm >= 128, this must be true. */ |
| SLJIT_ASSERT(counter <= 31); |
| |
| if (imm & 0x00ffffff) |
| return INVALID_IMM; /* Cannot be encoded. */ |
| |
| return ((imm >> 24) & 0x7f) | COPY_BITS(counter, 4, 26, 1) | COPY_BITS(counter, 1, 12, 3) | COPY_BITS(counter, 0, 7, 1); |
| } |
| |
| static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst, sljit_uw imm) |
| { |
| sljit_uw tmp; |
| |
| /* MOVS cannot be used since it destroy flags. */ |
| |
| if (imm >= 0x10000) { |
| tmp = get_imm(imm); |
| if (tmp != INVALID_IMM) |
| return push_inst32(compiler, MOV_WI | RD4(dst) | tmp); |
| tmp = get_imm(~imm); |
| if (tmp != INVALID_IMM) |
| return push_inst32(compiler, MVN_WI | RD4(dst) | tmp); |
| } |
| |
| /* set low 16 bits, set hi 16 bits to 0. */ |
| FAIL_IF(push_inst32(compiler, MOVW | RD4(dst) |
| | COPY_BITS(imm, 12, 16, 4) | COPY_BITS(imm, 11, 26, 1) | COPY_BITS(imm, 8, 12, 3) | (imm & 0xff))); |
| |
| /* set hi 16 bit if needed. */ |
| if (imm >= 0x10000) |
| return push_inst32(compiler, MOVT | RD4(dst) |
| | COPY_BITS(imm, 12 + 16, 16, 4) | COPY_BITS(imm, 11 + 16, 26, 1) | COPY_BITS(imm, 8 + 16, 12, 3) | ((imm & 0xff0000) >> 16)); |
| return SLJIT_SUCCESS; |
| } |
| |
| #define ARG1_IMM 0x0010000 |
| #define ARG2_IMM 0x0020000 |
| /* SET_FLAGS must be 0x100000 as it is also the value of S bit (can be used for optimization). */ |
| #define SET_FLAGS 0x0100000 |
| #define UNUSED_RETURN 0x0200000 |
| |
| static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 dst, sljit_uw arg1, sljit_uw arg2) |
| { |
| /* dst must be register, TMP_REG1 |
| arg1 must be register, imm |
| arg2 must be register, imm */ |
| sljit_s32 reg; |
| sljit_uw imm, nimm; |
| |
| if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) { |
| /* Both are immediates, no temporaries are used. */ |
| flags &= ~ARG1_IMM; |
| FAIL_IF(load_immediate(compiler, TMP_REG1, arg1)); |
| arg1 = TMP_REG1; |
| } |
| |
| if (flags & (ARG1_IMM | ARG2_IMM)) { |
| reg = (flags & ARG2_IMM) ? arg1 : arg2; |
| imm = (flags & ARG2_IMM) ? arg2 : arg1; |
| |
| switch (flags & 0xffff) { |
| case SLJIT_CLZ: |
| case SLJIT_MUL: |
| /* No form with immediate operand. */ |
| break; |
| case SLJIT_MOV: |
| SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG2); |
| return load_immediate(compiler, dst, imm); |
| case SLJIT_NOT: |
| if (!(flags & SET_FLAGS)) |
| return load_immediate(compiler, dst, ~imm); |
| /* Since the flags should be set, we just fallback to the register mode. |
| Although some clever things could be done here, "NOT IMM" does not worth the efforts. */ |
| break; |
| case SLJIT_ADD: |
| nimm = -imm; |
| if (IS_2_LO_REGS(reg, dst)) { |
| if (imm <= 0x7) |
| return push_inst16(compiler, ADDSI3 | IMM3(imm) | RD3(dst) | RN3(reg)); |
| if (nimm <= 0x7) |
| return push_inst16(compiler, SUBSI3 | IMM3(nimm) | RD3(dst) | RN3(reg)); |
| if (reg == dst) { |
| if (imm <= 0xff) |
| return push_inst16(compiler, ADDSI8 | IMM8(imm) | RDN3(dst)); |
| if (nimm <= 0xff) |
| return push_inst16(compiler, SUBSI8 | IMM8(nimm) | RDN3(dst)); |
| } |
| } |
| if (!(flags & SET_FLAGS)) { |
| if (imm <= 0xfff) |
| return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(imm)); |
| if (nimm <= 0xfff) |
| return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(nimm)); |
| } |
| nimm = get_imm(imm); |
| if (nimm != INVALID_IMM) |
| return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm); |
| nimm = get_imm(-imm); |
| if (nimm != INVALID_IMM) |
| return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm); |
| break; |
| case SLJIT_ADDC: |
| imm = get_imm(imm); |
| if (imm != INVALID_IMM) |
| return push_inst32(compiler, ADCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); |
| break; |
| case SLJIT_SUB: |
| /* SUB operation can be replaced by ADD because of the negative carry flag. */ |
| if (flags & ARG1_IMM) { |
| if (imm == 0 && IS_2_LO_REGS(reg, dst)) |
| return push_inst16(compiler, RSBSI | RD3(dst) | RN3(reg)); |
| imm = get_imm(imm); |
| if (imm != INVALID_IMM) |
| return push_inst32(compiler, RSB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); |
| break; |
| } |
| if (flags & UNUSED_RETURN) { |
| if (imm <= 0xff && reg_map[reg] <= 7) |
| return push_inst16(compiler, CMPI | IMM8(imm) | RDN3(reg)); |
| nimm = get_imm(imm); |
| if (nimm != INVALID_IMM) |
| return push_inst32(compiler, CMPI_W | RN4(reg) | nimm); |
| nimm = get_imm(-imm); |
| if (nimm != INVALID_IMM) |
| return push_inst32(compiler, CMNI_W | RN4(reg) | nimm); |
| } |
| nimm = -imm; |
| if (IS_2_LO_REGS(reg, dst)) { |
| if (imm <= 0x7) |
| return push_inst16(compiler, SUBSI3 | IMM3(imm) | RD3(dst) | RN3(reg)); |
| if (nimm <= 0x7) |
| return push_inst16(compiler, ADDSI3 | IMM3(nimm) | RD3(dst) | RN3(reg)); |
| if (reg == dst) { |
| if (imm <= 0xff) |
| return push_inst16(compiler, SUBSI8 | IMM8(imm) | RDN3(dst)); |
| if (nimm <= 0xff) |
| return push_inst16(compiler, ADDSI8 | IMM8(nimm) | RDN3(dst)); |
| } |
| } |
| if (!(flags & SET_FLAGS)) { |
| if (imm <= 0xfff) |
| return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(imm)); |
| if (nimm <= 0xfff) |
| return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(nimm)); |
| } |
| nimm = get_imm(imm); |
| if (nimm != INVALID_IMM) |
| return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm); |
| nimm = get_imm(-imm); |
| if (nimm != INVALID_IMM) |
| return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm); |
| break; |
| case SLJIT_SUBC: |
| if (flags & ARG1_IMM) |
| break; |
| imm = get_imm(imm); |
| if (imm != INVALID_IMM) |
| return push_inst32(compiler, SBCI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); |
| break; |
| case SLJIT_AND: |
| nimm = get_imm(imm); |
| if (nimm != INVALID_IMM) |
| return push_inst32(compiler, ANDI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm); |
| imm = get_imm(imm); |
| if (imm != INVALID_IMM) |
| return push_inst32(compiler, BICI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); |
| break; |
| case SLJIT_OR: |
| nimm = get_imm(imm); |
| if (nimm != INVALID_IMM) |
| return push_inst32(compiler, ORRI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | nimm); |
| imm = get_imm(imm); |
| if (imm != INVALID_IMM) |
| return push_inst32(compiler, ORNI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); |
| break; |
| case SLJIT_XOR: |
| imm = get_imm(imm); |
| if (imm != INVALID_IMM) |
| return push_inst32(compiler, EORI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); |
| break; |
| case SLJIT_SHL: |
| case SLJIT_LSHR: |
| case SLJIT_ASHR: |
| if (flags & ARG1_IMM) |
| break; |
| imm &= 0x1f; |
| if (imm == 0) { |
| if (!(flags & SET_FLAGS)) |
| return push_inst16(compiler, MOV | SET_REGS44(dst, reg)); |
| if (IS_2_LO_REGS(dst, reg)) |
| return push_inst16(compiler, MOVS | RD3(dst) | RN3(reg)); |
| return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(dst) | RM4(reg)); |
| } |
| switch (flags & 0xffff) { |
| case SLJIT_SHL: |
| if (IS_2_LO_REGS(dst, reg)) |
| return push_inst16(compiler, LSLSI | RD3(dst) | RN3(reg) | (imm << 6)); |
| return push_inst32(compiler, LSL_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm)); |
| case SLJIT_LSHR: |
| if (IS_2_LO_REGS(dst, reg)) |
| return push_inst16(compiler, LSRSI | RD3(dst) | RN3(reg) | (imm << 6)); |
| return push_inst32(compiler, LSR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm)); |
| default: /* SLJIT_ASHR */ |
| if (IS_2_LO_REGS(dst, reg)) |
| return push_inst16(compiler, ASRSI | RD3(dst) | RN3(reg) | (imm << 6)); |
| return push_inst32(compiler, ASR_WI | (flags & SET_FLAGS) | RD4(dst) | RM4(reg) | IMM5(imm)); |
| } |
| default: |
| SLJIT_UNREACHABLE(); |
| break; |
| } |
| |
| if (flags & ARG2_IMM) { |
| imm = arg2; |
| arg2 = (arg1 == TMP_REG1) ? TMP_REG2 : TMP_REG1; |
| FAIL_IF(load_immediate(compiler, arg2, imm)); |
| } |
| else { |
| imm = arg1; |
| arg1 = (arg2 == TMP_REG1) ? TMP_REG2 : TMP_REG1; |
| FAIL_IF(load_immediate(compiler, arg1, imm)); |
| } |
| |
| SLJIT_ASSERT(arg1 != arg2); |
| } |
| |
| /* Both arguments are registers. */ |
| switch (flags & 0xffff) { |
| case SLJIT_MOV: |
| case SLJIT_MOV_U32: |
| case SLJIT_MOV_S32: |
| case SLJIT_MOV_P: |
| SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2); |
| if (dst == arg2) |
| return SLJIT_SUCCESS; |
| return push_inst16(compiler, MOV | SET_REGS44(dst, arg2)); |
| case SLJIT_MOV_U8: |
| SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2); |
| if (IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, UXTB | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, UXTB_W | RD4(dst) | RM4(arg2)); |
| case SLJIT_MOV_S8: |
| SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2); |
| if (IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, SXTB | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, SXTB_W | RD4(dst) | RM4(arg2)); |
| case SLJIT_MOV_U16: |
| SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2); |
| if (IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, UXTH | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, UXTH_W | RD4(dst) | RM4(arg2)); |
| case SLJIT_MOV_S16: |
| SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG2); |
| if (IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, SXTH | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, SXTH_W | RD4(dst) | RM4(arg2)); |
| case SLJIT_NOT: |
| SLJIT_ASSERT(arg1 == TMP_REG2); |
| if (IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, MVNS | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, MVN_W | (flags & SET_FLAGS) | RD4(dst) | RM4(arg2)); |
| case SLJIT_CLZ: |
| SLJIT_ASSERT(arg1 == TMP_REG2); |
| FAIL_IF(push_inst32(compiler, CLZ | RN4(arg2) | RD4(dst) | RM4(arg2))); |
| return SLJIT_SUCCESS; |
| case SLJIT_ADD: |
| if (IS_3_LO_REGS(dst, arg1, arg2)) |
| return push_inst16(compiler, ADDS | RD3(dst) | RN3(arg1) | RM3(arg2)); |
| if (dst == arg1 && !(flags & SET_FLAGS)) |
| return push_inst16(compiler, ADD | SET_REGS44(dst, arg2)); |
| return push_inst32(compiler, ADD_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| case SLJIT_ADDC: |
| if (dst == arg1 && IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, ADCS | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, ADC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| case SLJIT_SUB: |
| if (flags & UNUSED_RETURN) { |
| if (IS_2_LO_REGS(arg1, arg2)) |
| return push_inst16(compiler, CMP | RD3(arg1) | RN3(arg2)); |
| return push_inst16(compiler, CMP_X | SET_REGS44(arg1, arg2)); |
| } |
| if (IS_3_LO_REGS(dst, arg1, arg2)) |
| return push_inst16(compiler, SUBS | RD3(dst) | RN3(arg1) | RM3(arg2)); |
| return push_inst32(compiler, SUB_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| case SLJIT_SUBC: |
| if (dst == arg1 && IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, SBCS | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, SBC_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| case SLJIT_MUL: |
| if (!(flags & SET_FLAGS)) |
| return push_inst32(compiler, MUL | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| SLJIT_ASSERT(dst != TMP_REG2); |
| FAIL_IF(push_inst32(compiler, SMULL | RT4(dst) | RD4(TMP_REG2) | RN4(arg1) | RM4(arg2))); |
| /* cmp TMP_REG2, dst asr #31. */ |
| return push_inst32(compiler, CMP_W | RN4(TMP_REG2) | 0x70e0 | RM4(dst)); |
| case SLJIT_AND: |
| if (dst == arg1 && IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, ANDS | RD3(dst) | RN3(arg2)); |
| if ((flags & UNUSED_RETURN) && IS_2_LO_REGS(arg1, arg2)) |
| return push_inst16(compiler, TST | RD3(arg1) | RN3(arg2)); |
| return push_inst32(compiler, AND_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| case SLJIT_OR: |
| if (dst == arg1 && IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, ORRS | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, ORR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| case SLJIT_XOR: |
| if (dst == arg1 && IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, EORS | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, EOR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| case SLJIT_SHL: |
| if (dst == arg1 && IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, LSLS | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, LSL_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| case SLJIT_LSHR: |
| if (dst == arg1 && IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, LSRS | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, LSR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| case SLJIT_ASHR: |
| if (dst == arg1 && IS_2_LO_REGS(dst, arg2)) |
| return push_inst16(compiler, ASRS | RD3(dst) | RN3(arg2)); |
| return push_inst32(compiler, ASR_W | (flags & SET_FLAGS) | RD4(dst) | RN4(arg1) | RM4(arg2)); |
| } |
| |
| SLJIT_UNREACHABLE(); |
| return SLJIT_SUCCESS; |
| } |
| |
| #define STORE 0x01 |
| #define SIGNED 0x02 |
| |
| #define WORD_SIZE 0x00 |
| #define BYTE_SIZE 0x04 |
| #define HALF_SIZE 0x08 |
| #define PRELOAD 0x0c |
| |
| #define IS_WORD_SIZE(flags) (!(flags & (BYTE_SIZE | HALF_SIZE))) |
| #define OFFSET_CHECK(imm, shift) (!(argw & ~(imm << shift))) |
| |
| /* |
| 1st letter: |
| w = word |
| b = byte |
| h = half |
| |
| 2nd letter: |
| s = signed |
| u = unsigned |
| |
| 3rd letter: |
| l = load |
| s = store |
| */ |
| |
| static const sljit_ins sljit_mem16[12] = { |
| /* w u l */ 0x5800 /* ldr */, |
| /* w u s */ 0x5000 /* str */, |
| /* w s l */ 0x5800 /* ldr */, |
| /* w s s */ 0x5000 /* str */, |
| |
| /* b u l */ 0x5c00 /* ldrb */, |
| /* b u s */ 0x5400 /* strb */, |
| /* b s l */ 0x5600 /* ldrsb */, |
| /* b s s */ 0x5400 /* strb */, |
| |
| /* h u l */ 0x5a00 /* ldrh */, |
| /* h u s */ 0x5200 /* strh */, |
| /* h s l */ 0x5e00 /* ldrsh */, |
| /* h s s */ 0x5200 /* strh */, |
| }; |
| |
| static const sljit_ins sljit_mem16_imm5[12] = { |
| /* w u l */ 0x6800 /* ldr imm5 */, |
| /* w u s */ 0x6000 /* str imm5 */, |
| /* w s l */ 0x6800 /* ldr imm5 */, |
| /* w s s */ 0x6000 /* str imm5 */, |
| |
| /* b u l */ 0x7800 /* ldrb imm5 */, |
| /* b u s */ 0x7000 /* strb imm5 */, |
| /* b s l */ 0x0000 /* not allowed */, |
| /* b s s */ 0x7000 /* strb imm5 */, |
| |
| /* h u l */ 0x8800 /* ldrh imm5 */, |
| /* h u s */ 0x8000 /* strh imm5 */, |
| /* h s l */ 0x0000 /* not allowed */, |
| /* h s s */ 0x8000 /* strh imm5 */, |
| }; |
| |
| #define MEM_IMM8 0xc00 |
| #define MEM_IMM12 0x800000 |
| static const sljit_ins sljit_mem32[13] = { |
| /* w u l */ 0xf8500000 /* ldr.w */, |
| /* w u s */ 0xf8400000 /* str.w */, |
| /* w s l */ 0xf8500000 /* ldr.w */, |
| /* w s s */ 0xf8400000 /* str.w */, |
| |
| /* b u l */ 0xf8100000 /* ldrb.w */, |
| /* b u s */ 0xf8000000 /* strb.w */, |
| /* b s l */ 0xf9100000 /* ldrsb.w */, |
| /* b s s */ 0xf8000000 /* strb.w */, |
| |
| /* h u l */ 0xf8300000 /* ldrh.w */, |
| /* h u s */ 0xf8200000 /* strsh.w */, |
| /* h s l */ 0xf9300000 /* ldrsh.w */, |
| /* h s s */ 0xf8200000 /* strsh.w */, |
| |
| /* p u l */ 0xf8100000 /* pld */, |
| }; |
| |
| /* Helper function. Dst should be reg + value, using at most 1 instruction, flags does not set. */ |
| static sljit_s32 emit_set_delta(struct sljit_compiler *compiler, sljit_s32 dst, sljit_s32 reg, sljit_sw value) |
| { |
| if (value >= 0) { |
| if (value <= 0xfff) |
| return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(value)); |
| value = get_imm(value); |
| if (value != INVALID_IMM) |
| return push_inst32(compiler, ADD_WI | RD4(dst) | RN4(reg) | value); |
| } |
| else { |
| value = -value; |
| if (value <= 0xfff) |
| return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(value)); |
| value = get_imm(value); |
| if (value != INVALID_IMM) |
| return push_inst32(compiler, SUB_WI | RD4(dst) | RN4(reg) | value); |
| } |
| return SLJIT_ERR_UNSUPPORTED; |
| } |
| |
| static SLJIT_INLINE sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, |
| sljit_s32 arg, sljit_sw argw, sljit_s32 tmp_reg) |
| { |
| sljit_s32 other_r; |
| sljit_uw tmp; |
| |
| SLJIT_ASSERT(arg & SLJIT_MEM); |
| SLJIT_ASSERT((arg & REG_MASK) != tmp_reg); |
| arg &= ~SLJIT_MEM; |
| |
| if (SLJIT_UNLIKELY(!(arg & REG_MASK))) { |
| tmp = get_imm(argw & ~0xfff); |
| if (tmp != INVALID_IMM) { |
| FAIL_IF(push_inst32(compiler, MOV_WI | RD4(tmp_reg) | tmp)); |
| return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(tmp_reg) | (argw & 0xfff)); |
| } |
| |
| FAIL_IF(load_immediate(compiler, tmp_reg, argw)); |
| if (IS_2_LO_REGS(reg, tmp_reg) && sljit_mem16_imm5[flags]) |
| return push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(tmp_reg)); |
| return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(tmp_reg)); |
| } |
| |
| if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) { |
| argw &= 0x3; |
| other_r = OFFS_REG(arg); |
| arg &= 0xf; |
| |
| if (!argw && IS_3_LO_REGS(reg, arg, other_r)) |
| return push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(other_r)); |
| return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(other_r) | (argw << 4)); |
| } |
| |
| if (argw > 0xfff) { |
| tmp = get_imm(argw & ~0xfff); |
| if (tmp != INVALID_IMM) { |
| push_inst32(compiler, ADD_WI | RD4(tmp_reg) | RN4(arg) | tmp); |
| arg = tmp_reg; |
| argw = argw & 0xfff; |
| } |
| } |
| else if (argw < -0xff) { |
| tmp = get_imm(-argw & ~0xff); |
| if (tmp != INVALID_IMM) { |
| push_inst32(compiler, SUB_WI | RD4(tmp_reg) | RN4(arg) | tmp); |
| arg = tmp_reg; |
| argw = -(-argw & 0xff); |
| } |
| } |
| |
| if (IS_2_LO_REGS(reg, arg) && sljit_mem16_imm5[flags]) { |
| tmp = 3; |
| if (IS_WORD_SIZE(flags)) { |
| if (OFFSET_CHECK(0x1f, 2)) |
| tmp = 2; |
| } |
| else if (flags & BYTE_SIZE) |
| { |
| if (OFFSET_CHECK(0x1f, 0)) |
| tmp = 0; |
| } |
| else { |
| SLJIT_ASSERT(flags & HALF_SIZE); |
| if (OFFSET_CHECK(0x1f, 1)) |
| tmp = 1; |
| } |
| |
| if (tmp < 3) |
| return push_inst16(compiler, sljit_mem16_imm5[flags] | RD3(reg) | RN3(arg) | (argw << (6 - tmp))); |
| } |
| else if (SLJIT_UNLIKELY(arg == SLJIT_SP) && IS_WORD_SIZE(flags) && OFFSET_CHECK(0xff, 2) && reg_map[reg] <= 7) { |
| /* SP based immediate. */ |
| return push_inst16(compiler, STR_SP | ((flags & STORE) ? 0 : 0x800) | RDN3(reg) | (argw >> 2)); |
| } |
| |
| if (argw >= 0 && argw <= 0xfff) |
| return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM12 | RT4(reg) | RN4(arg) | argw); |
| else if (argw < 0 && argw >= -0xff) |
| return push_inst32(compiler, sljit_mem32[flags] | MEM_IMM8 | RT4(reg) | RN4(arg) | -argw); |
| |
| SLJIT_ASSERT(arg != tmp_reg); |
| |
| FAIL_IF(load_immediate(compiler, tmp_reg, argw)); |
| if (IS_3_LO_REGS(reg, arg, tmp_reg)) |
| return push_inst16(compiler, sljit_mem16[flags] | RD3(reg) | RN3(arg) | RM3(tmp_reg)); |
| return push_inst32(compiler, sljit_mem32[flags] | RT4(reg) | RN4(arg) | RM4(tmp_reg)); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Entry, exit */ |
| /* --------------------------------------------------------------------- */ |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler, |
| sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, |
| sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) |
| { |
| sljit_s32 args, size, i, tmp; |
| sljit_ins push = 0; |
| #ifdef _WIN32 |
| sljit_uw imm; |
| #endif |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); |
| set_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); |
| |
| tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG; |
| for (i = SLJIT_S0; i >= tmp; i--) |
| push |= 1 << reg_map[i]; |
| |
| for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) |
| push |= 1 << reg_map[i]; |
| |
| FAIL_IF((push & 0xff00) |
| ? push_inst32(compiler, PUSH_W | (1 << 14) | push) |
| : push_inst16(compiler, PUSH | (1 << 8) | push)); |
| |
| /* Stack must be aligned to 8 bytes: (LR, R4) */ |
| size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1); |
| local_size = ((size + local_size + 7) & ~7) - size; |
| compiler->local_size = local_size; |
| |
| #ifdef _WIN32 |
| if (local_size >= 256) { |
| if (local_size > 4096) |
| imm = get_imm(4096); |
| else |
| imm = get_imm(local_size & ~0xff); |
| |
| SLJIT_ASSERT(imm != INVALID_IMM); |
| FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(SLJIT_SP) | imm)); |
| } |
| #else |
| if (local_size > 0) { |
| if (local_size <= (127 << 2)) |
| FAIL_IF(push_inst16(compiler, SUB_SP | (local_size >> 2))); |
| else |
| FAIL_IF(emit_op_imm(compiler, SLJIT_SUB | ARG2_IMM, SLJIT_SP, SLJIT_SP, local_size)); |
| } |
| #endif |
| |
| args = get_arg_count(arg_types); |
| |
| if (args >= 1) |
| FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S0, SLJIT_R0))); |
| if (args >= 2) |
| FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S1, SLJIT_R1))); |
| if (args >= 3) |
| FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_S2, SLJIT_R2))); |
| |
| #ifdef _WIN32 |
| if (local_size >= 256) { |
| if (local_size > 4096) { |
| imm = get_imm(4096); |
| SLJIT_ASSERT(imm != INVALID_IMM); |
| |
| if (local_size < 4 * 4096) { |
| if (local_size > 2 * 4096) { |
| FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1))); |
| FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm)); |
| local_size -= 4096; |
| } |
| |
| if (local_size > 2 * 4096) { |
| FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1))); |
| FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm)); |
| local_size -= 4096; |
| } |
| |
| FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1))); |
| local_size -= 4096; |
| |
| SLJIT_ASSERT(local_size > 0); |
| } |
| else { |
| FAIL_IF(load_immediate(compiler, SLJIT_R3, (local_size >> 12) - 1)); |
| FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1))); |
| FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm)); |
| SLJIT_ASSERT(reg_map[SLJIT_R3] < 7); |
| FAIL_IF(push_inst16(compiler, SUBSI8 | RDN3(SLJIT_R3) | 1)); |
| FAIL_IF(push_inst16(compiler, BCC | (0x1 << 8) /* not-equal */ | (-7 & 0xff))); |
| |
| local_size &= 0xfff; |
| |
| if (local_size != 0) |
| FAIL_IF(push_inst32(compiler, LDRI | 0x400 | RT4(TMP_REG2) | RN4(TMP_REG1))); |
| } |
| |
| if (local_size >= 256) { |
| imm = get_imm(local_size & ~0xff); |
| SLJIT_ASSERT(imm != INVALID_IMM); |
| |
| FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(TMP_REG1) | imm)); |
| } |
| } |
| |
| local_size &= 0xff; |
| FAIL_IF(push_inst32(compiler, LDRI | 0x400 | (local_size > 0 ? 0x100 : 0) | RT4(TMP_REG2) | RN4(TMP_REG1) | local_size)); |
| |
| FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_SP, TMP_REG1))); |
| } |
| else if (local_size > 0) |
| FAIL_IF(push_inst32(compiler, LDRI | 0x500 | RT4(TMP_REG1) | RN4(SLJIT_SP) | local_size)); |
| #endif |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler, |
| sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, |
| sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) |
| { |
| sljit_s32 size; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); |
| set_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); |
| |
| size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1); |
| compiler->local_size = ((size + local_size + 7) & ~7) - size; |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw) |
| { |
| sljit_s32 i, tmp; |
| sljit_ins pop = 0; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_return(compiler, op, src, srcw)); |
| |
| FAIL_IF(emit_mov_before_return(compiler, op, src, srcw)); |
| |
| if (compiler->local_size > 0) { |
| if (compiler->local_size <= (127 << 2)) |
| FAIL_IF(push_inst16(compiler, ADD_SP | (compiler->local_size >> 2))); |
| else |
| FAIL_IF(emit_op_imm(compiler, SLJIT_ADD | ARG2_IMM, SLJIT_SP, SLJIT_SP, compiler->local_size)); |
| } |
| |
| tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG; |
| for (i = SLJIT_S0; i >= tmp; i--) |
| pop |= 1 << reg_map[i]; |
| |
| for (i = compiler->scratches; i >= SLJIT_FIRST_SAVED_REG; i--) |
| pop |= 1 << reg_map[i]; |
| |
| return (pop & 0xff00) |
| ? push_inst32(compiler, POP_W | (1 << 15) | pop) |
| : push_inst16(compiler, POP | (1 << 8) | pop); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Operators */ |
| /* --------------------------------------------------------------------- */ |
| |
| #if !(defined __ARM_FEATURE_IDIV) && !(defined __ARM_ARCH_EXT_IDIV__) |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifdef _WIN32 |
| extern unsigned long long __rt_udiv(unsigned int denominator, unsigned int numerator); |
| extern long long __rt_sdiv(int denominator, int numerator); |
| #elif defined(__GNUC__) |
| extern unsigned int __aeabi_uidivmod(unsigned int numerator, int unsigned denominator); |
| extern int __aeabi_idivmod(int numerator, int denominator); |
| #else |
| #error "Software divmod functions are needed" |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* !__ARM_FEATURE_IDIV && !__ARM_ARCH_EXT_IDIV__ */ |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op) |
| { |
| #if !(defined __ARM_FEATURE_IDIV) && !(defined __ARM_ARCH_EXT_IDIV__) |
| sljit_sw saved_reg_list[3]; |
| sljit_sw saved_reg_count; |
| #endif |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op0(compiler, op)); |
| |
| op = GET_OPCODE(op); |
| switch (op) { |
| case SLJIT_BREAKPOINT: |
| return push_inst16(compiler, BKPT); |
| case SLJIT_NOP: |
| return push_inst16(compiler, NOP); |
| case SLJIT_LMUL_UW: |
| case SLJIT_LMUL_SW: |
| return push_inst32(compiler, (op == SLJIT_LMUL_UW ? UMULL : SMULL) |
| | (reg_map[SLJIT_R1] << 8) |
| | (reg_map[SLJIT_R0] << 12) |
| | (reg_map[SLJIT_R0] << 16) |
| | reg_map[SLJIT_R1]); |
| #if (defined __ARM_FEATURE_IDIV) || (defined __ARM_ARCH_EXT_IDIV__) |
| case SLJIT_DIVMOD_UW: |
| case SLJIT_DIVMOD_SW: |
| FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG1, SLJIT_R0))); |
| FAIL_IF(push_inst32(compiler, (op == SLJIT_DIVMOD_UW ? UDIV : SDIV) | RD4(SLJIT_R0) | RN4(SLJIT_R0) | RM4(SLJIT_R1))); |
| FAIL_IF(push_inst32(compiler, MUL | RD4(SLJIT_R1) | RN4(SLJIT_R0) | RM4(SLJIT_R1))); |
| return push_inst32(compiler, SUB_W | RD4(SLJIT_R1) | RN4(TMP_REG1) | RM4(SLJIT_R1)); |
| case SLJIT_DIV_UW: |
| case SLJIT_DIV_SW: |
| return push_inst32(compiler, (op == SLJIT_DIV_UW ? UDIV : SDIV) | RD4(SLJIT_R0) | RN4(SLJIT_R0) | RM4(SLJIT_R1)); |
| #else /* !__ARM_FEATURE_IDIV && !__ARM_ARCH_EXT_IDIV__ */ |
| case SLJIT_DIVMOD_UW: |
| case SLJIT_DIVMOD_SW: |
| case SLJIT_DIV_UW: |
| case SLJIT_DIV_SW: |
| SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments); |
| SLJIT_ASSERT(reg_map[2] == 1 && reg_map[3] == 2 && reg_map[4] == 3); |
| |
| saved_reg_count = 0; |
| if (compiler->scratches >= 4) |
| saved_reg_list[saved_reg_count++] = 3; |
| if (compiler->scratches >= 3) |
| saved_reg_list[saved_reg_count++] = 2; |
| if (op >= SLJIT_DIV_UW) |
| saved_reg_list[saved_reg_count++] = 1; |
| |
| if (saved_reg_count > 0) { |
| FAIL_IF(push_inst32(compiler, 0xf84d0d00 | (saved_reg_count >= 3 ? 16 : 8) |
| | (saved_reg_list[0] << 12) /* str rX, [sp, #-8/-16]! */)); |
| if (saved_reg_count >= 2) { |
| SLJIT_ASSERT(saved_reg_list[1] < 8); |
| FAIL_IF(push_inst16(compiler, 0x9001 | (saved_reg_list[1] << 8) /* str rX, [sp, #4] */)); |
| } |
| if (saved_reg_count >= 3) { |
| SLJIT_ASSERT(saved_reg_list[2] < 8); |
| FAIL_IF(push_inst16(compiler, 0x9002 | (saved_reg_list[2] << 8) /* str rX, [sp, #8] */)); |
| } |
| } |
| |
| #ifdef _WIN32 |
| FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(TMP_REG1, SLJIT_R0))); |
| FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_R0, SLJIT_R1))); |
| FAIL_IF(push_inst16(compiler, MOV | SET_REGS44(SLJIT_R1, TMP_REG1))); |
| FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM, |
| ((op | 0x2) == SLJIT_DIV_UW ? SLJIT_FUNC_OFFSET(__rt_udiv) : SLJIT_FUNC_OFFSET(__rt_sdiv)))); |
| #elif defined(__GNUC__) |
| FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM, |
| ((op | 0x2) == SLJIT_DIV_UW ? SLJIT_FUNC_OFFSET(__aeabi_uidivmod) : SLJIT_FUNC_OFFSET(__aeabi_idivmod)))); |
| #else |
| #error "Software divmod functions are needed" |
| #endif |
| |
| if (saved_reg_count > 0) { |
| if (saved_reg_count >= 3) { |
| SLJIT_ASSERT(saved_reg_list[2] < 8); |
| FAIL_IF(push_inst16(compiler, 0x9802 | (saved_reg_list[2] << 8) /* ldr rX, [sp, #8] */)); |
| } |
| if (saved_reg_count >= 2) { |
| SLJIT_ASSERT(saved_reg_list[1] < 8); |
| FAIL_IF(push_inst16(compiler, 0x9801 | (saved_reg_list[1] << 8) /* ldr rX, [sp, #4] */)); |
| } |
| return push_inst32(compiler, 0xf85d0b00 | (saved_reg_count >= 3 ? 16 : 8) |
| | (saved_reg_list[0] << 12) /* ldr rX, [sp], #8/16 */); |
| } |
| return SLJIT_SUCCESS; |
| #endif /* __ARM_FEATURE_IDIV || __ARM_ARCH_EXT_IDIV__ */ |
| 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) |
| { |
| sljit_s32 dst_r, flags; |
| sljit_s32 op_flags = GET_ALL_FLAGS(op); |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| ADJUST_LOCAL_OFFSET(src, srcw); |
| |
| dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; |
| |
| op = GET_OPCODE(op); |
| if (op >= SLJIT_MOV && op <= SLJIT_MOV_P) { |
| switch (op) { |
| case SLJIT_MOV: |
| case SLJIT_MOV_U32: |
| case SLJIT_MOV_S32: |
| case SLJIT_MOV_P: |
| flags = WORD_SIZE; |
| break; |
| case SLJIT_MOV_U8: |
| flags = BYTE_SIZE; |
| if (src & SLJIT_IMM) |
| srcw = (sljit_u8)srcw; |
| break; |
| case SLJIT_MOV_S8: |
| flags = BYTE_SIZE | SIGNED; |
| if (src & SLJIT_IMM) |
| srcw = (sljit_s8)srcw; |
| break; |
| case SLJIT_MOV_U16: |
| flags = HALF_SIZE; |
| if (src & SLJIT_IMM) |
| srcw = (sljit_u16)srcw; |
| break; |
| case SLJIT_MOV_S16: |
| flags = HALF_SIZE | SIGNED; |
| if (src & SLJIT_IMM) |
| srcw = (sljit_s16)srcw; |
| break; |
| default: |
| SLJIT_UNREACHABLE(); |
| flags = 0; |
| break; |
| } |
| |
| if (src & SLJIT_IMM) |
| FAIL_IF(emit_op_imm(compiler, SLJIT_MOV | ARG2_IMM, dst_r, TMP_REG2, srcw)); |
| else if (src & SLJIT_MEM) { |
| FAIL_IF(emit_op_mem(compiler, flags, dst_r, src, srcw, TMP_REG1)); |
| } else { |
| if (dst_r != TMP_REG1) |
| return emit_op_imm(compiler, op, dst_r, TMP_REG2, src); |
| dst_r = src; |
| } |
| |
| if (!(dst & SLJIT_MEM)) |
| return SLJIT_SUCCESS; |
| |
| return emit_op_mem(compiler, flags | STORE, dst_r, dst, dstw, TMP_REG2); |
| } |
| |
| if (op == SLJIT_NEG) { |
| #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ |
| || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) |
| compiler->skip_checks = 1; |
| #endif |
| return sljit_emit_op2(compiler, SLJIT_SUB | op_flags, dst, dstw, SLJIT_IMM, 0, src, srcw); |
| } |
| |
| flags = HAS_FLAGS(op_flags) ? SET_FLAGS : 0; |
| |
| if (src & SLJIT_MEM) { |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src, srcw, TMP_REG1)); |
| src = TMP_REG1; |
| } |
| |
| emit_op_imm(compiler, flags | op, dst_r, TMP_REG2, src); |
| |
| if (SLJIT_UNLIKELY(dst & SLJIT_MEM)) |
| return emit_op_mem(compiler, flags | STORE, dst_r, dst, dstw, TMP_REG2); |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2, sljit_sw src2w) |
| { |
| sljit_s32 dst_reg, flags, src2_reg; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| ADJUST_LOCAL_OFFSET(src1, src1w); |
| ADJUST_LOCAL_OFFSET(src2, src2w); |
| |
| if (dst == SLJIT_UNUSED && !HAS_FLAGS(op)) |
| return SLJIT_SUCCESS; |
| |
| dst_reg = SLOW_IS_REG(dst) ? dst : TMP_REG1; |
| flags = HAS_FLAGS(op) ? SET_FLAGS : 0; |
| |
| if (src1 & SLJIT_IMM) |
| flags |= ARG1_IMM; |
| else if (src1 & SLJIT_MEM) { |
| emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src1, src1w, TMP_REG1); |
| src1w = TMP_REG1; |
| } |
| else |
| src1w = src1; |
| |
| if (src2 & SLJIT_IMM) |
| flags |= ARG2_IMM; |
| else if (src2 & SLJIT_MEM) { |
| src2_reg = (!(flags & ARG1_IMM) && (src1w == TMP_REG1)) ? TMP_REG2 : TMP_REG1; |
| emit_op_mem(compiler, WORD_SIZE, src2_reg, src2, src2w, src2_reg); |
| src2w = src2_reg; |
| } |
| else |
| src2w = src2; |
| |
| if (dst == SLJIT_UNUSED) |
| flags |= UNUSED_RETURN; |
| |
| emit_op_imm(compiler, flags | GET_OPCODE(op), dst_reg, src1w, src2w); |
| |
| if (!(dst & SLJIT_MEM)) |
| return SLJIT_SUCCESS; |
| return emit_op_mem(compiler, WORD_SIZE | STORE, dst_reg, dst, dstw, TMP_REG2); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_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_inst16(compiler, MOV | SET_REGS44(TMP_REG2, src))); |
| else |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, src, srcw, TMP_REG2)); |
| |
| return push_inst16(compiler, BX | RN3(TMP_REG2)); |
| 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: |
| return emit_op_mem(compiler, PRELOAD, TMP_PC, src, srcw, TMP_REG1); |
| } |
| |
| 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)); |
| |
| if (size == 2) |
| return push_inst16(compiler, *(sljit_u16*)instruction); |
| return push_inst32(compiler, *(sljit_ins*)instruction); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Floating point operators */ |
| /* --------------------------------------------------------------------- */ |
| |
| #define FPU_LOAD (1 << 20) |
| |
| static sljit_s32 emit_fop_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw) |
| { |
| sljit_uw imm; |
| sljit_sw inst = VSTR_F32 | (flags & (SLJIT_F32_OP | FPU_LOAD)); |
| |
| SLJIT_ASSERT(arg & SLJIT_MEM); |
| |
| /* Fast loads and stores. */ |
| if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) { |
| FAIL_IF(push_inst32(compiler, ADD_W | RD4(TMP_REG1) | RN4(arg & REG_MASK) | RM4(OFFS_REG(arg)) | ((argw & 0x3) << 6))); |
| arg = SLJIT_MEM | TMP_REG1; |
| argw = 0; |
| } |
| |
| if ((arg & REG_MASK) && (argw & 0x3) == 0) { |
| if (!(argw & ~0x3fc)) |
| return push_inst32(compiler, inst | 0x800000 | RN4(arg & REG_MASK) | DD4(reg) | (argw >> 2)); |
| if (!(-argw & ~0x3fc)) |
| return push_inst32(compiler, inst | RN4(arg & REG_MASK) | DD4(reg) | (-argw >> 2)); |
| } |
| |
| if (arg & REG_MASK) { |
| if (emit_set_delta(compiler, TMP_REG1, arg & REG_MASK, argw) != SLJIT_ERR_UNSUPPORTED) { |
| FAIL_IF(compiler->error); |
| return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg)); |
| } |
| imm = get_imm(argw & ~0x3fc); |
| if (imm != INVALID_IMM) { |
| FAIL_IF(push_inst32(compiler, ADD_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm)); |
| return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2)); |
| } |
| imm = get_imm(-argw & ~0x3fc); |
| if (imm != INVALID_IMM) { |
| argw = -argw; |
| FAIL_IF(push_inst32(compiler, SUB_WI | RD4(TMP_REG1) | RN4(arg & REG_MASK) | imm)); |
| return push_inst32(compiler, inst | RN4(TMP_REG1) | DD4(reg) | ((argw & 0x3fc) >> 2)); |
| } |
| } |
| |
| FAIL_IF(load_immediate(compiler, TMP_REG1, argw)); |
| if (arg & REG_MASK) |
| FAIL_IF(push_inst16(compiler, ADD | SET_REGS44(TMP_REG1, (arg & REG_MASK)))); |
| return push_inst32(compiler, inst | 0x800000 | RN4(TMP_REG1) | DD4(reg)); |
| } |
| |
| static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| op ^= SLJIT_F32_OP; |
| |
| if (src & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src, srcw)); |
| src = TMP_FREG1; |
| } |
| |
| FAIL_IF(push_inst32(compiler, VCVT_S32_F32 | (op & SLJIT_F32_OP) | DD4(TMP_FREG1) | DM4(src))); |
| |
| if (FAST_IS_REG(dst)) |
| return push_inst32(compiler, VMOV | (1 << 20) | RT4(dst) | DN4(TMP_FREG1)); |
| |
| /* Store the integer value from a VFP register. */ |
| return emit_fop_mem(compiler, 0, TMP_FREG1, dst, dstw); |
| } |
| |
| static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; |
| |
| op ^= SLJIT_F32_OP; |
| |
| if (FAST_IS_REG(src)) |
| FAIL_IF(push_inst32(compiler, VMOV | RT4(src) | DN4(TMP_FREG1))); |
| else if (src & SLJIT_MEM) { |
| /* Load the integer value into a VFP register. */ |
| FAIL_IF(emit_fop_mem(compiler, FPU_LOAD, TMP_FREG1, src, srcw)); |
| } |
| else { |
| FAIL_IF(load_immediate(compiler, TMP_REG1, srcw)); |
| FAIL_IF(push_inst32(compiler, VMOV | RT4(TMP_REG1) | DN4(TMP_FREG1))); |
| } |
| |
| FAIL_IF(push_inst32(compiler, VCVT_F32_S32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(TMP_FREG1))); |
| |
| if (dst & SLJIT_MEM) |
| return emit_fop_mem(compiler, (op & SLJIT_F32_OP), TMP_FREG1, dst, dstw); |
| return SLJIT_SUCCESS; |
| } |
| |
| static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2, sljit_sw src2w) |
| { |
| op ^= SLJIT_F32_OP; |
| |
| if (src1 & SLJIT_MEM) { |
| emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src1, src1w); |
| src1 = TMP_FREG1; |
| } |
| |
| if (src2 & SLJIT_MEM) { |
| emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w); |
| src2 = TMP_FREG2; |
| } |
| |
| FAIL_IF(push_inst32(compiler, VCMP_F32 | (op & SLJIT_F32_OP) | DD4(src1) | DM4(src2))); |
| return push_inst32(compiler, VMRS); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| sljit_s32 dst_r; |
| |
| CHECK_ERROR(); |
| |
| SLJIT_COMPILE_ASSERT((SLJIT_F32_OP == 0x100), float_transfer_bit_error); |
| SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw); |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; |
| |
| if (GET_OPCODE(op) != SLJIT_CONV_F64_FROM_F32) |
| op ^= SLJIT_F32_OP; |
| |
| if (src & SLJIT_MEM) { |
| emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, dst_r, src, srcw); |
| src = dst_r; |
| } |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_MOV_F64: |
| if (src != dst_r) { |
| if (dst_r != TMP_FREG1) |
| FAIL_IF(push_inst32(compiler, VMOV_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src))); |
| else |
| dst_r = src; |
| } |
| break; |
| case SLJIT_NEG_F64: |
| FAIL_IF(push_inst32(compiler, VNEG_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src))); |
| break; |
| case SLJIT_ABS_F64: |
| FAIL_IF(push_inst32(compiler, VABS_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src))); |
| break; |
| case SLJIT_CONV_F64_FROM_F32: |
| FAIL_IF(push_inst32(compiler, VCVT_F64_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DM4(src))); |
| op ^= SLJIT_F32_OP; |
| break; |
| } |
| |
| if (dst & SLJIT_MEM) |
| return emit_fop_mem(compiler, (op & SLJIT_F32_OP), dst_r, dst, dstw); |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2, sljit_sw src2w) |
| { |
| sljit_s32 dst_r; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| ADJUST_LOCAL_OFFSET(src1, src1w); |
| ADJUST_LOCAL_OFFSET(src2, src2w); |
| |
| op ^= SLJIT_F32_OP; |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; |
| if (src1 & SLJIT_MEM) { |
| emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG1, src1, src1w); |
| src1 = TMP_FREG1; |
| } |
| if (src2 & SLJIT_MEM) { |
| emit_fop_mem(compiler, (op & SLJIT_F32_OP) | FPU_LOAD, TMP_FREG2, src2, src2w); |
| src2 = TMP_FREG2; |
| } |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_ADD_F64: |
| FAIL_IF(push_inst32(compiler, VADD_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2))); |
| break; |
| case SLJIT_SUB_F64: |
| FAIL_IF(push_inst32(compiler, VSUB_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2))); |
| break; |
| case SLJIT_MUL_F64: |
| FAIL_IF(push_inst32(compiler, VMUL_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2))); |
| break; |
| case SLJIT_DIV_F64: |
| FAIL_IF(push_inst32(compiler, VDIV_F32 | (op & SLJIT_F32_OP) | DD4(dst_r) | DN4(src1) | DM4(src2))); |
| break; |
| } |
| |
| if (!(dst & SLJIT_MEM)) |
| return SLJIT_SUCCESS; |
| return emit_fop_mem(compiler, (op & SLJIT_F32_OP), TMP_FREG1, dst, dstw); |
| } |
| |
| #undef FPU_LOAD |
| |
| /* --------------------------------------------------------------------- */ |
| /* Other instructions */ |
| /* --------------------------------------------------------------------- */ |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw) |
| { |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| |
| SLJIT_ASSERT(reg_map[TMP_REG2] == 14); |
| |
| if (FAST_IS_REG(dst)) |
| return push_inst16(compiler, MOV | SET_REGS44(dst, TMP_REG2)); |
| |
| /* Memory. */ |
| return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG2, dst, dstw, TMP_REG1); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Conditional instructions */ |
| /* --------------------------------------------------------------------- */ |
| |
| static sljit_uw get_cc(sljit_s32 type) |
| { |
| switch (type) { |
| case SLJIT_EQUAL: |
| case SLJIT_MUL_NOT_OVERFLOW: |
| case SLJIT_EQUAL_F64: |
| return 0x0; |
| |
| case SLJIT_NOT_EQUAL: |
| case SLJIT_MUL_OVERFLOW: |
| case SLJIT_NOT_EQUAL_F64: |
| return 0x1; |
| |
| case SLJIT_LESS: |
| case SLJIT_LESS_F64: |
| return 0x3; |
| |
| case SLJIT_GREATER_EQUAL: |
| case SLJIT_GREATER_EQUAL_F64: |
| return 0x2; |
| |
| case SLJIT_GREATER: |
| case SLJIT_GREATER_F64: |
| return 0x8; |
| |
| case SLJIT_LESS_EQUAL: |
| case SLJIT_LESS_EQUAL_F64: |
| return 0x9; |
| |
| case SLJIT_SIG_LESS: |
| return 0xb; |
| |
| case SLJIT_SIG_GREATER_EQUAL: |
| return 0xa; |
| |
| case SLJIT_SIG_GREATER: |
| return 0xc; |
| |
| case SLJIT_SIG_LESS_EQUAL: |
| return 0xd; |
| |
| case SLJIT_OVERFLOW: |
| case SLJIT_UNORDERED_F64: |
| return 0x6; |
| |
| case SLJIT_NOT_OVERFLOW: |
| case SLJIT_ORDERED_F64: |
| return 0x7; |
| |
| default: /* SLJIT_JUMP */ |
| SLJIT_UNREACHABLE(); |
| return 0xe; |
| } |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler) |
| { |
| struct sljit_label *label; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_label(compiler)); |
| |
| if (compiler->last_label && compiler->last_label->size == compiler->size) |
| return compiler->last_label; |
| |
| label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label)); |
| PTR_FAIL_IF(!label); |
| set_label(label, compiler); |
| return label; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type) |
| { |
| struct sljit_jump *jump; |
| sljit_ins cc; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_jump(compiler, type)); |
| |
| jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); |
| PTR_FAIL_IF(!jump); |
| set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP); |
| type &= 0xff; |
| |
| PTR_FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0)); |
| if (type < SLJIT_JUMP) { |
| jump->flags |= IS_COND; |
| cc = get_cc(type); |
| jump->flags |= cc << 8; |
| PTR_FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8)); |
| } |
| |
| jump->addr = compiler->size; |
| if (type <= SLJIT_JUMP) |
| PTR_FAIL_IF(push_inst16(compiler, BX | RN3(TMP_REG1))); |
| else { |
| jump->flags |= IS_BL; |
| PTR_FAIL_IF(push_inst16(compiler, BLX | RN3(TMP_REG1))); |
| } |
| |
| return jump; |
| } |
| |
| #ifdef __SOFTFP__ |
| |
| static sljit_s32 softfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src) |
| { |
| sljit_s32 stack_offset = 0; |
| sljit_s32 arg_count = 0; |
| sljit_s32 word_arg_offset = 0; |
| sljit_s32 float_arg_count = 0; |
| sljit_s32 types = 0; |
| sljit_s32 src_offset = 4 * sizeof(sljit_sw); |
| sljit_u8 offsets[4]; |
| |
| if (src && FAST_IS_REG(*src)) |
| src_offset = reg_map[*src] * sizeof(sljit_sw); |
| |
| arg_types >>= SLJIT_DEF_SHIFT; |
| |
| while (arg_types) { |
| types = (types << SLJIT_DEF_SHIFT) | (arg_types & SLJIT_DEF_MASK); |
| |
| switch (arg_types & SLJIT_DEF_MASK) { |
| case SLJIT_ARG_TYPE_F32: |
| offsets[arg_count] = (sljit_u8)stack_offset; |
| stack_offset += sizeof(sljit_f32); |
| arg_count++; |
| float_arg_count++; |
| break; |
| case SLJIT_ARG_TYPE_F64: |
| if (stack_offset & 0x7) |
| stack_offset += sizeof(sljit_sw); |
| offsets[arg_count] = (sljit_u8)stack_offset; |
| stack_offset += sizeof(sljit_f64); |
| arg_count++; |
| float_arg_count++; |
| break; |
| default: |
| offsets[arg_count] = (sljit_u8)stack_offset; |
| stack_offset += sizeof(sljit_sw); |
| arg_count++; |
| word_arg_offset += sizeof(sljit_sw); |
| break; |
| } |
| |
| arg_types >>= SLJIT_DEF_SHIFT; |
| } |
| |
| if (stack_offset > 16) |
| FAIL_IF(push_inst16(compiler, SUB_SP | (((stack_offset - 16) + 0x7) & ~0x7) >> 2)); |
| |
| SLJIT_ASSERT(reg_map[TMP_REG1] == 12); |
| |
| /* Process arguments in reversed direction. */ |
| while (types) { |
| switch (types & SLJIT_DEF_MASK) { |
| case SLJIT_ARG_TYPE_F32: |
| arg_count--; |
| float_arg_count--; |
| stack_offset = offsets[arg_count]; |
| |
| if (stack_offset < 16) { |
| if (src_offset == stack_offset) { |
| FAIL_IF(push_inst16(compiler, MOV | (src_offset << 1) | 4 | (1 << 7))); |
| *src = TMP_REG1; |
| } |
| FAIL_IF(push_inst32(compiler, VMOV | 0x100000 | (float_arg_count << 16) | (stack_offset << 10))); |
| } else |
| FAIL_IF(push_inst32(compiler, VSTR_F32 | 0x800000 | RN4(SLJIT_SP) | (float_arg_count << 12) | ((stack_offset - 16) >> 2))); |
| break; |
| case SLJIT_ARG_TYPE_F64: |
| arg_count--; |
| float_arg_count--; |
| stack_offset = offsets[arg_count]; |
| |
| SLJIT_ASSERT((stack_offset & 0x7) == 0); |
| |
| if (stack_offset < 16) { |
| if (src_offset == stack_offset || src_offset == stack_offset + sizeof(sljit_sw)) { |
| FAIL_IF(push_inst16(compiler, MOV | (src_offset << 1) | 4 | (1 << 7))); |
| *src = TMP_REG1; |
| } |
| FAIL_IF(push_inst32(compiler, VMOV2 | 0x100000 | (stack_offset << 10) | ((stack_offset + sizeof(sljit_sw)) << 14) | float_arg_count)); |
| } else |
| FAIL_IF(push_inst32(compiler, VSTR_F32 | 0x800100 | RN4(SLJIT_SP) | (float_arg_count << 12) | ((stack_offset - 16) >> 2))); |
| break; |
| default: |
| arg_count--; |
| word_arg_offset -= sizeof(sljit_sw); |
| stack_offset = offsets[arg_count]; |
| |
| SLJIT_ASSERT(stack_offset >= word_arg_offset); |
| |
| if (stack_offset != word_arg_offset) { |
| if (stack_offset < 16) { |
| if (src_offset == stack_offset) { |
| FAIL_IF(push_inst16(compiler, MOV | (src_offset << 1) | 4 | (1 << 7))); |
| *src = TMP_REG1; |
| } |
| else if (src_offset == word_arg_offset) { |
| *src = 1 + (stack_offset >> 2); |
| src_offset = stack_offset; |
| } |
| FAIL_IF(push_inst16(compiler, MOV | (stack_offset >> 2) | (word_arg_offset << 1))); |
| } else |
| FAIL_IF(push_inst16(compiler, STR_SP | (word_arg_offset << 6) | ((stack_offset - 16) >> 2))); |
| } |
| break; |
| } |
| |
| types >>= SLJIT_DEF_SHIFT; |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| static sljit_s32 softfloat_post_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types) |
| { |
| sljit_s32 stack_size = 0; |
| |
| if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F32) |
| FAIL_IF(push_inst32(compiler, VMOV | (0 << 16) | (0 << 12))); |
| if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F64) |
| FAIL_IF(push_inst32(compiler, VMOV2 | (1 << 16) | (0 << 12) | 0)); |
| |
| arg_types >>= SLJIT_DEF_SHIFT; |
| |
| while (arg_types) { |
| switch (arg_types & SLJIT_DEF_MASK) { |
| case SLJIT_ARG_TYPE_F32: |
| stack_size += sizeof(sljit_f32); |
| break; |
| case SLJIT_ARG_TYPE_F64: |
| if (stack_size & 0x7) |
| stack_size += sizeof(sljit_sw); |
| stack_size += sizeof(sljit_f64); |
| break; |
| default: |
| stack_size += sizeof(sljit_sw); |
| break; |
| } |
| |
| arg_types >>= SLJIT_DEF_SHIFT; |
| } |
| |
| if (stack_size <= 16) |
| return SLJIT_SUCCESS; |
| |
| return push_inst16(compiler, ADD_SP | ((((stack_size - 16) + 0x7) & ~0x7) >> 2)); |
| } |
| |
| #else |
| |
| static sljit_s32 hardfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types) |
| { |
| sljit_u32 remap = 0; |
| sljit_u32 offset = 0; |
| sljit_u32 new_offset, mask; |
| |
| /* Remove return value. */ |
| arg_types >>= SLJIT_DEF_SHIFT; |
| |
| while (arg_types) { |
| if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F32) { |
| new_offset = 0; |
| mask = 1; |
| |
| while (remap & mask) { |
| new_offset++; |
| mask <<= 1; |
| } |
| remap |= mask; |
| |
| if (offset != new_offset) |
| FAIL_IF(push_inst32(compiler, VMOV_F32 | DD4((new_offset >> 1) + 1) |
| | ((new_offset & 0x1) ? 0x400000 : 0) | DM4((offset >> 1) + 1))); |
| |
| offset += 2; |
| } |
| else if ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F64) { |
| new_offset = 0; |
| mask = 3; |
| |
| while (remap & mask) { |
| new_offset += 2; |
| mask <<= 2; |
| } |
| remap |= mask; |
| |
| if (offset != new_offset) |
| FAIL_IF(push_inst32(compiler, VMOV_F32 | SLJIT_F32_OP | DD4((new_offset >> 1) + 1) | DM4((offset >> 1) + 1))); |
| |
| offset += 2; |
| } |
| arg_types >>= SLJIT_DEF_SHIFT; |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| #endif |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 arg_types) |
| { |
| #ifdef __SOFTFP__ |
| struct sljit_jump *jump; |
| #endif |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types)); |
| |
| #ifdef __SOFTFP__ |
| PTR_FAIL_IF(softfloat_call_with_args(compiler, arg_types, NULL)); |
| |
| #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ |
| || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) |
| compiler->skip_checks = 1; |
| #endif |
| |
| jump = sljit_emit_jump(compiler, type); |
| PTR_FAIL_IF(jump == NULL); |
| |
| PTR_FAIL_IF(softfloat_post_call_with_args(compiler, arg_types)); |
| return jump; |
| #else |
| PTR_FAIL_IF(hardfloat_call_with_args(compiler, arg_types)); |
| |
| #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ |
| || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) |
| compiler->skip_checks = 1; |
| #endif |
| |
| return sljit_emit_jump(compiler, type); |
| #endif |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw) |
| { |
| struct sljit_jump *jump; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_ijump(compiler, type, src, srcw)); |
| ADJUST_LOCAL_OFFSET(src, srcw); |
| |
| SLJIT_ASSERT(reg_map[TMP_REG1] != 14); |
| |
| if (!(src & SLJIT_IMM)) { |
| if (FAST_IS_REG(src)) { |
| SLJIT_ASSERT(reg_map[src] != 14); |
| return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(src)); |
| } |
| |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, src, srcw, TMP_REG1)); |
| if (type >= SLJIT_FAST_CALL) |
| return push_inst16(compiler, BLX | RN3(TMP_REG1)); |
| } |
| |
| /* These jumps are converted to jump/call instructions when possible. */ |
| jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); |
| FAIL_IF(!jump); |
| set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0)); |
| jump->u.target = srcw; |
| |
| FAIL_IF(emit_imm32_const(compiler, TMP_REG1, 0)); |
| jump->addr = compiler->size; |
| return push_inst16(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RN3(TMP_REG1)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 arg_types, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw)); |
| |
| #ifdef __SOFTFP__ |
| if (src & SLJIT_MEM) { |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src, srcw, TMP_REG1)); |
| src = TMP_REG1; |
| } |
| |
| FAIL_IF(softfloat_call_with_args(compiler, arg_types, &src)); |
| |
| #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ |
| || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) |
| compiler->skip_checks = 1; |
| #endif |
| |
| FAIL_IF(sljit_emit_ijump(compiler, type, src, srcw)); |
| |
| return softfloat_post_call_with_args(compiler, arg_types); |
| #else /* !__SOFTFP__ */ |
| FAIL_IF(hardfloat_call_with_args(compiler, arg_types)); |
| |
| #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ |
| || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) |
| compiler->skip_checks = 1; |
| #endif |
| |
| return sljit_emit_ijump(compiler, type, src, srcw); |
| #endif /* __SOFTFP__ */ |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 type) |
| { |
| sljit_s32 dst_r, flags = GET_ALL_FLAGS(op); |
| sljit_ins cc; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| |
| op = GET_OPCODE(op); |
| cc = get_cc(type & 0xff); |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1; |
| |
| if (op < SLJIT_ADD) { |
| FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4)); |
| if (reg_map[dst_r] > 7) { |
| FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 1)); |
| FAIL_IF(push_inst32(compiler, MOV_WI | RD4(dst_r) | 0)); |
| } else { |
| /* The movsi (immediate) instruction does not set flags in IT block. */ |
| FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 1)); |
| FAIL_IF(push_inst16(compiler, MOVSI | RDN3(dst_r) | 0)); |
| } |
| if (!(dst & SLJIT_MEM)) |
| return SLJIT_SUCCESS; |
| return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, TMP_REG2); |
| } |
| |
| if (dst & SLJIT_MEM) |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2)); |
| |
| if (op == SLJIT_AND) { |
| FAIL_IF(push_inst16(compiler, IT | (cc << 4) | (((cc & 0x1) ^ 0x1) << 3) | 0x4)); |
| FAIL_IF(push_inst32(compiler, ANDI | RN4(dst_r) | RD4(dst_r) | 1)); |
| FAIL_IF(push_inst32(compiler, ANDI | RN4(dst_r) | RD4(dst_r) | 0)); |
| } |
| else { |
| FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8)); |
| FAIL_IF(push_inst32(compiler, ((op == SLJIT_OR) ? ORRI : EORI) | RN4(dst_r) | RD4(dst_r) | 1)); |
| } |
| |
| if (dst & SLJIT_MEM) |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, TMP_REG1, dst, dstw, TMP_REG2)); |
| |
| if (!(flags & SLJIT_SET_Z)) |
| return SLJIT_SUCCESS; |
| |
| /* The condition must always be set, even if the ORR/EORI is not executed above. */ |
| return push_inst32(compiler, MOV_W | SET_FLAGS | RD4(TMP_REG1) | RM4(dst_r)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 dst_reg, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| sljit_uw cc, tmp; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw)); |
| |
| dst_reg &= ~SLJIT_I32_OP; |
| |
| cc = get_cc(type & 0xff); |
| |
| if (!(src & SLJIT_IMM)) { |
| FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8)); |
| return push_inst16(compiler, MOV | SET_REGS44(dst_reg, src)); |
| } |
| |
| tmp = (sljit_uw) srcw; |
| |
| if (tmp < 0x10000) { |
| /* set low 16 bits, set hi 16 bits to 0. */ |
| FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8)); |
| return push_inst32(compiler, MOVW | RD4(dst_reg) |
| | COPY_BITS(tmp, 12, 16, 4) | COPY_BITS(tmp, 11, 26, 1) | COPY_BITS(tmp, 8, 12, 3) | (tmp & 0xff)); |
| } |
| |
| tmp = get_imm(srcw); |
| if (tmp != INVALID_IMM) { |
| FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8)); |
| return push_inst32(compiler, MOV_WI | RD4(dst_reg) | tmp); |
| } |
| |
| tmp = get_imm(~srcw); |
| if (tmp != INVALID_IMM) { |
| FAIL_IF(push_inst16(compiler, IT | (cc << 4) | 0x8)); |
| return push_inst32(compiler, MVN_WI | RD4(dst_reg) | tmp); |
| } |
| |
| FAIL_IF(push_inst16(compiler, IT | (cc << 4) | ((cc & 0x1) << 3) | 0x4)); |
| |
| tmp = (sljit_uw) srcw; |
| FAIL_IF(push_inst32(compiler, MOVW | RD4(dst_reg) |
| | COPY_BITS(tmp, 12, 16, 4) | COPY_BITS(tmp, 11, 26, 1) | COPY_BITS(tmp, 8, 12, 3) | (tmp & 0xff))); |
| return push_inst32(compiler, MOVT | RD4(dst_reg) |
| | COPY_BITS(tmp, 12 + 16, 16, 4) | COPY_BITS(tmp, 11 + 16, 26, 1) | COPY_BITS(tmp, 8 + 16, 12, 3) | ((tmp & 0xff0000) >> 16)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 reg, |
| sljit_s32 mem, sljit_sw memw) |
| { |
| sljit_s32 flags; |
| sljit_ins inst; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_mem(compiler, type, reg, mem, memw)); |
| |
| if ((mem & OFFS_REG_MASK) || (memw > 255 || memw < -255)) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if (type & SLJIT_MEM_SUPP) |
| return SLJIT_SUCCESS; |
| |
| switch (type & 0xff) { |
| case SLJIT_MOV: |
| case SLJIT_MOV_U32: |
| case SLJIT_MOV_S32: |
| case SLJIT_MOV_P: |
| flags = WORD_SIZE; |
| break; |
| case SLJIT_MOV_U8: |
| flags = BYTE_SIZE; |
| break; |
| case SLJIT_MOV_S8: |
| flags = BYTE_SIZE | SIGNED; |
| break; |
| case SLJIT_MOV_U16: |
| flags = HALF_SIZE; |
| break; |
| case SLJIT_MOV_S16: |
| flags = HALF_SIZE | SIGNED; |
| break; |
| default: |
| SLJIT_UNREACHABLE(); |
| flags = WORD_SIZE; |
| break; |
| } |
| |
| if (type & SLJIT_MEM_STORE) |
| flags |= STORE; |
| |
| inst = sljit_mem32[flags] | 0x900; |
| |
| if (type & SLJIT_MEM_PRE) |
| inst |= 0x400; |
| |
| if (memw >= 0) |
| inst |= 0x200; |
| else |
| memw = -memw; |
| |
| return push_inst32(compiler, inst | RT4(reg) | RN4(mem & REG_MASK) | memw); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value) |
| { |
| struct sljit_const *const_; |
| sljit_s32 dst_r; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| |
| const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const)); |
| PTR_FAIL_IF(!const_); |
| set_const(const_, compiler); |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1; |
| PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, init_value)); |
| |
| if (dst & SLJIT_MEM) |
| PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw, TMP_REG2)); |
| return const_; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE 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); |
| |
| 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); |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1; |
| PTR_FAIL_IF(emit_imm32_const(compiler, dst_r, 0)); |
| |
| if (dst & SLJIT_MEM) |
| PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw, TMP_REG2)); |
| return put_label; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset) |
| { |
| sljit_u16 *inst = (sljit_u16*)addr; |
| modify_imm32_const(inst, new_target); |
| inst = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 4); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset) |
| { |
| sljit_u16 *inst = (sljit_u16*)addr; |
| modify_imm32_const(inst, new_constant); |
| inst = (sljit_u16 *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 4); |
| } |