/* $NetBSD: sljitNativeARM_64.c,v 1.4.30.1 2024/04/18 15:21:55 martin Exp $ */ /* * 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) { return "ARM-64" SLJIT_CPUINFO; } /* Length of an instruction word */ typedef sljit_u32 sljit_ins; #define TMP_ZERO (0) #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2) #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3) #define TMP_REG3 (SLJIT_NUMBER_OF_REGISTERS + 4) #define TMP_LR (SLJIT_NUMBER_OF_REGISTERS + 5) #define TMP_SP (SLJIT_NUMBER_OF_REGISTERS + 6) #define TMP_FREG1 (0) #define TMP_FREG2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1) static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 8] = { 31, 0, 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 15, 16, 17, 8, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 29, 9, 10, 11, 30, 31 }; #define W_OP (1 << 31) #define RD(rd) (reg_map[rd]) #define RT(rt) (reg_map[rt]) #define RN(rn) (reg_map[rn] << 5) #define RT2(rt2) (reg_map[rt2] << 10) #define RM(rm) (reg_map[rm] << 16) #define VD(vd) (vd) #define VT(vt) (vt) #define VN(vn) ((vn) << 5) #define VM(vm) ((vm) << 16) /* --------------------------------------------------------------------- */ /* Instrucion forms */ /* --------------------------------------------------------------------- */ #define ADC 0x9a000000 #define ADD 0x8b000000 #define ADDI 0x91000000 #define AND 0x8a000000 #define ANDI 0x92000000 #define ASRV 0x9ac02800 #define B 0x14000000 #define B_CC 0x54000000 #define BL 0x94000000 #define BLR 0xd63f0000 #define BR 0xd61f0000 #define BRK 0xd4200000 #define CBZ 0xb4000000 #define CLZ 0xdac01000 #define CSINC 0x9a800400 #define EOR 0xca000000 #define EORI 0xd2000000 #define FABS 0x1e60c000 #define FADD 0x1e602800 #define FCMP 0x1e602000 #define FCVT 0x1e224000 #define FCVTZS 0x9e780000 #define FDIV 0x1e601800 #define FMOV 0x1e604000 #define FMUL 0x1e600800 #define FNEG 0x1e614000 #define FSUB 0x1e603800 #define LDRI 0xf9400000 #define LDP 0xa9400000 #define LDP_PST 0xa8c00000 #define LSLV 0x9ac02000 #define LSRV 0x9ac02400 #define MADD 0x9b000000 #define MOVK 0xf2800000 #define MOVN 0x92800000 #define MOVZ 0xd2800000 #define NOP 0xd503201f #define ORN 0xaa200000 #define ORR 0xaa000000 #define ORRI 0xb2000000 #define RET 0xd65f0000 #define SBC 0xda000000 #define SBFM 0x93000000 #define SCVTF 0x9e620000 #define SDIV 0x9ac00c00 #define SMADDL 0x9b200000 #define SMULH 0x9b403c00 #define STP 0xa9000000 #define STP_PRE 0xa9800000 #define STRI 0xf9000000 #define STR_FI 0x3d000000 #define STR_FR 0x3c206800 #define STUR_FI 0x3c000000 #define SUB 0xcb000000 #define SUBI 0xd1000000 #define SUBS 0xeb000000 #define UBFM 0xd3000000 #define UDIV 0x9ac00800 #define UMULH 0x9bc03c00 /* dest_reg is the absolute name of the register Useful for reordering instructions in the delay slot. */ static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins ins) { sljit_ins *ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins)); FAIL_IF(!ptr); *ptr = ins; compiler->size++; return SLJIT_SUCCESS; } static SLJIT_INLINE sljit_s32 emit_imm64_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_uw imm) { FAIL_IF(push_inst(compiler, MOVZ | RD(dst) | ((imm & 0xffff) << 5))); FAIL_IF(push_inst(compiler, MOVK | RD(dst) | (((imm >> 16) & 0xffff) << 5) | (1 << 21))); FAIL_IF(push_inst(compiler, MOVK | RD(dst) | (((imm >> 32) & 0xffff) << 5) | (2 << 21))); return push_inst(compiler, MOVK | RD(dst) | ((imm >> 48) << 5) | (3 << 21)); } static SLJIT_INLINE void modify_imm64_const(sljit_ins* inst, sljit_uw new_imm) { sljit_s32 dst = inst[0] & 0x1f; SLJIT_ASSERT((inst[0] & 0xffe00000) == MOVZ && (inst[1] & 0xffe00000) == (MOVK | (1 << 21))); inst[0] = MOVZ | dst | ((new_imm & 0xffff) << 5); inst[1] = MOVK | dst | (((new_imm >> 16) & 0xffff) << 5) | (1 << 21); inst[2] = MOVK | dst | (((new_imm >> 32) & 0xffff) << 5) | (2 << 21); inst[3] = MOVK | dst | ((new_imm >> 48) << 5) | (3 << 21); } static SLJIT_INLINE sljit_s32 detect_jump_type(struct sljit_jump *jump, sljit_ins *code_ptr, sljit_ins *code, sljit_sw executable_offset) { sljit_sw diff; sljit_uw target_addr; if (jump->flags & SLJIT_REWRITABLE_JUMP) { jump->flags |= PATCH_ABS64; return 0; } if (jump->flags & JUMP_ADDR) target_addr = jump->u.target; else { SLJIT_ASSERT(jump->flags & JUMP_LABEL); target_addr = (sljit_uw)(code + jump->u.label->size) + (sljit_uw)executable_offset; } diff = (sljit_sw)target_addr - (sljit_sw)(code_ptr + 4) - executable_offset; if (jump->flags & IS_COND) { diff += sizeof(sljit_ins); if (diff <= 0xfffff && diff >= -0x100000) { code_ptr[-5] ^= (jump->flags & IS_CBZ) ? (0x1 << 24) : 0x1; jump->addr -= sizeof(sljit_ins); jump->flags |= PATCH_COND; return 5; } diff -= sizeof(sljit_ins); } if (diff <= 0x7ffffff && diff >= -0x8000000) { jump->flags |= PATCH_B; return 4; } if (target_addr <= 0xffffffffl) { if (jump->flags & IS_COND) code_ptr[-5] -= (2 << 5); code_ptr[-2] = code_ptr[0]; return 2; } if (target_addr <= 0xffffffffffffl) { if (jump->flags & IS_COND) code_ptr[-5] -= (1 << 5); jump->flags |= PATCH_ABS48; code_ptr[-1] = code_ptr[0]; return 1; } jump->flags |= PATCH_ABS64; return 0; } SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler) { struct sljit_memory_fragment *buf; sljit_ins *code; sljit_ins *code_ptr; sljit_ins *buf_ptr; sljit_ins *buf_end; sljit_uw word_count; sljit_sw executable_offset; sljit_uw addr; sljit_s32 dst; struct sljit_label *label; struct sljit_jump *jump; struct sljit_const *const_; CHECK_ERROR_PTR(); CHECK_PTR(check_sljit_generate_code(compiler)); reverse_buf(compiler); code = (sljit_ins*)SLJIT_MALLOC_EXEC(compiler->size * sizeof(sljit_ins)); PTR_FAIL_WITH_EXEC_IF(code); buf = compiler->buf; code_ptr = code; word_count = 0; executable_offset = SLJIT_EXEC_OFFSET(code); label = compiler->labels; jump = compiler->jumps; const_ = compiler->consts; do { buf_ptr = (sljit_ins*)buf->memory; buf_end = buf_ptr + (buf->used_size >> 2); do { *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 (label && label->size == word_count) { label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); label->size = code_ptr - code; label = label->next; } if (jump && jump->addr == word_count) { jump->addr = (sljit_uw)(code_ptr - 4); code_ptr -= detect_jump_type(jump, code_ptr, code, executable_offset); jump = jump->next; } if (const_ && const_->addr == word_count) { const_->addr = (sljit_uw)code_ptr; const_ = const_->next; } code_ptr ++; word_count ++; } while (buf_ptr < buf_end); buf = buf->next; } while (buf); if (label && label->size == word_count) { label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); label->size = code_ptr - code; label = label->next; } SLJIT_ASSERT(!label); SLJIT_ASSERT(!jump); SLJIT_ASSERT(!const_); SLJIT_ASSERT(code_ptr - code <= (sljit_sw)compiler->size); jump = compiler->jumps; while (jump) { do { addr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target; buf_ptr = (sljit_ins *)jump->addr; if (jump->flags & PATCH_B) { addr = (sljit_sw)(addr - (sljit_uw)SLJIT_ADD_EXEC_OFFSET(buf_ptr, executable_offset)) >> 2; SLJIT_ASSERT((sljit_sw)addr <= 0x1ffffff && (sljit_sw)addr >= -0x2000000); buf_ptr[0] = ((jump->flags & IS_BL) ? BL : B) | (addr & 0x3ffffff); if (jump->flags & IS_COND) buf_ptr[-1] -= (4 << 5); break; } if (jump->flags & PATCH_COND) { addr = (sljit_sw)(addr - (sljit_uw)SLJIT_ADD_EXEC_OFFSET(buf_ptr, executable_offset)) >> 2; SLJIT_ASSERT((sljit_sw)addr <= 0x3ffff && (sljit_sw)addr >= -0x40000); buf_ptr[0] = (buf_ptr[0] & ~0xffffe0) | ((addr & 0x7ffff) << 5); break; } SLJIT_ASSERT((jump->flags & (PATCH_ABS48 | PATCH_ABS64)) || addr <= 0xffffffffl); SLJIT_ASSERT((jump->flags & PATCH_ABS64) || addr <= 0xffffffffffffl); dst = buf_ptr[0] & 0x1f; buf_ptr[0] = MOVZ | dst | ((addr & 0xffff) << 5); buf_ptr[1] = MOVK | dst | (((addr >> 16) & 0xffff) << 5) | (1 << 21); if (jump->flags & (PATCH_ABS48 | PATCH_ABS64)) buf_ptr[2] = MOVK | dst | (((addr >> 32) & 0xffff) << 5) | (2 << 21); if (jump->flags & PATCH_ABS64) buf_ptr[3] = MOVK | dst | (((addr >> 48) & 0xffff) << 5) | (3 << 21); } while (0); jump = jump->next; } compiler->error = SLJIT_ERR_COMPILED; compiler->executable_offset = executable_offset; compiler->executable_size = (code_ptr - code) * sizeof(sljit_ins); code = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(code, executable_offset); code_ptr = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); SLJIT_CACHE_FLUSH(code, code_ptr); return code; } /* --------------------------------------------------------------------- */ /* Core code generator functions. */ /* --------------------------------------------------------------------- */ #define COUNT_TRAILING_ZERO(value, result) \ result = 0; \ if (!(value & 0xffffffff)) { \ result += 32; \ value >>= 32; \ } \ if (!(value & 0xffff)) { \ result += 16; \ value >>= 16; \ } \ if (!(value & 0xff)) { \ result += 8; \ value >>= 8; \ } \ if (!(value & 0xf)) { \ result += 4; \ value >>= 4; \ } \ if (!(value & 0x3)) { \ result += 2; \ value >>= 2; \ } \ if (!(value & 0x1)) { \ result += 1; \ value >>= 1; \ } #define LOGICAL_IMM_CHECK 0x100 static sljit_ins logical_imm(sljit_sw imm, sljit_s32 len) { sljit_s32 negated, ones, right; sljit_uw mask, uimm; sljit_ins ins; if (len & LOGICAL_IMM_CHECK) { len &= ~LOGICAL_IMM_CHECK; if (len == 32 && (imm == 0 || imm == -1)) return 0; if (len == 16 && ((sljit_s32)imm == 0 || (sljit_s32)imm == -1)) return 0; } SLJIT_ASSERT((len == 32 && imm != 0 && imm != -1) || (len == 16 && (sljit_s32)imm != 0 && (sljit_s32)imm != -1)); uimm = (sljit_uw)imm; while (1) { if (len <= 0) { SLJIT_UNREACHABLE(); return 0; } mask = ((sljit_uw)1 << len) - 1; if ((uimm & mask) != ((uimm >> len) & mask)) break; len >>= 1; } len <<= 1; negated = 0; if (uimm & 0x1) { negated = 1; uimm = ~uimm; } if (len < 64) uimm &= ((sljit_uw)1 << len) - 1; /* Unsigned right shift. */ COUNT_TRAILING_ZERO(uimm, right); /* Signed shift. We also know that the highest bit is set. */ imm = (sljit_sw)~uimm; SLJIT_ASSERT(imm < 0); COUNT_TRAILING_ZERO(imm, ones); if (~imm) return 0; if (len == 64) ins = 1 << 22; else ins = (0x3f - ((len << 1) - 1)) << 10; if (negated) return ins | ((len - ones - 1) << 10) | ((len - ones - right) << 16); return ins | ((ones - 1) << 10) | ((len - right) << 16); } #undef COUNT_TRAILING_ZERO static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw simm) { sljit_uw imm = (sljit_uw)simm; sljit_s32 i, zeros, ones, first; sljit_ins bitmask; if (imm <= 0xffff) return push_inst(compiler, MOVZ | RD(dst) | (imm << 5)); if (simm >= -0x10000 && simm < 0) return push_inst(compiler, MOVN | RD(dst) | ((~imm & 0xffff) << 5)); if (imm <= 0xffffffffl) { if ((imm & 0xffff0000l) == 0xffff0000) return push_inst(compiler, (MOVN ^ W_OP) | RD(dst) | ((~imm & 0xffff) << 5)); if ((imm & 0xffff) == 0xffff) return push_inst(compiler, (MOVN ^ W_OP) | RD(dst) | ((~imm & 0xffff0000l) >> (16 - 5)) | (1 << 21)); bitmask = logical_imm(simm, 16); if (bitmask != 0) return push_inst(compiler, (ORRI ^ W_OP) | RD(dst) | RN(TMP_ZERO) | bitmask); } else { bitmask = logical_imm(simm, 32); if (bitmask != 0) return push_inst(compiler, ORRI | RD(dst) | RN(TMP_ZERO) | bitmask); } if (imm <= 0xffffffffl) { FAIL_IF(push_inst(compiler, MOVZ | RD(dst) | ((imm & 0xffff) << 5))); return push_inst(compiler, MOVK | RD(dst) | ((imm & 0xffff0000l) >> (16 - 5)) | (1 << 21)); } if (simm >= -0x100000000l && simm < 0) { FAIL_IF(push_inst(compiler, MOVN | RD(dst) | ((~imm & 0xffff) << 5))); return push_inst(compiler, MOVK | RD(dst) | ((imm & 0xffff0000l) >> (16 - 5)) | (1 << 21)); } /* A large amount of number can be constructed from ORR and MOVx, but computing them is costly. We don't */ zeros = 0; ones = 0; for (i = 4; i > 0; i--) { if ((simm & 0xffff) == 0) zeros++; if ((simm & 0xffff) == 0xffff) ones++; simm >>= 16; } simm = (sljit_sw)imm; first = 1; if (ones > zeros) { simm = ~simm; for (i = 0; i < 4; i++) { if (!(simm & 0xffff)) { simm >>= 16; continue; } if (first) { first = 0; FAIL_IF(push_inst(compiler, MOVN | RD(dst) | ((simm & 0xffff) << 5) | (i << 21))); } else FAIL_IF(push_inst(compiler, MOVK | RD(dst) | ((~simm & 0xffff) << 5) | (i << 21))); simm >>= 16; } return SLJIT_SUCCESS; } for (i = 0; i < 4; i++) { if (!(simm & 0xffff)) { simm >>= 16; continue; } if (first) { first = 0; FAIL_IF(push_inst(compiler, MOVZ | RD(dst) | ((simm & 0xffff) << 5) | (i << 21))); } else FAIL_IF(push_inst(compiler, MOVK | RD(dst) | ((simm & 0xffff) << 5) | (i << 21))); simm >>= 16; } return SLJIT_SUCCESS; } #define ARG1_IMM 0x0010000 #define ARG2_IMM 0x0020000 #define INT_OP 0x0040000 #define SET_FLAGS 0x0080000 #define UNUSED_RETURN 0x0100000 #define SLOW_DEST 0x0200000 #define SLOW_SRC1 0x0400000 #define SLOW_SRC2 0x0800000 #define CHECK_FLAGS(flag_bits) \ if (flags & SET_FLAGS) { \ inv_bits |= flag_bits; \ if (flags & UNUSED_RETURN) \ dst = TMP_ZERO; \ } static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 dst, sljit_sw arg1, sljit_sw arg2) { /* dst must be register, TMP_REG1 arg1 must be register, TMP_REG1, imm arg2 must be register, TMP_REG2, imm */ sljit_ins inv_bits = (flags & INT_OP) ? (1 << 31) : 0; sljit_ins inst_bits; sljit_s32 op = (flags & 0xffff); sljit_s32 reg; sljit_sw imm, nimm; if (SLJIT_UNLIKELY((flags & (ARG1_IMM | ARG2_IMM)) == (ARG1_IMM | ARG2_IMM))) { /* Both are immediates. */ flags &= ~ARG1_IMM; if (arg1 == 0 && op != SLJIT_ADD && op != SLJIT_SUB) arg1 = TMP_ZERO; else { 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 (op) { case SLJIT_MUL: case SLJIT_NEG: case SLJIT_CLZ: case SLJIT_ADDC: case SLJIT_SUBC: /* No form with immediate operand (except imm 0, which is represented by a ZERO register). */ break; case SLJIT_MOV: SLJIT_ASSERT(!(flags & SET_FLAGS) && (flags & ARG2_IMM) && arg1 == TMP_REG1); return load_immediate(compiler, dst, imm); case SLJIT_NOT: SLJIT_ASSERT(flags & ARG2_IMM); FAIL_IF(load_immediate(compiler, dst, (flags & INT_OP) ? (~imm & 0xffffffff) : ~imm)); goto set_flags; case SLJIT_SUB: if (flags & ARG1_IMM) break; imm = -imm; /* Fall through. */ case SLJIT_ADD: if (imm == 0) { CHECK_FLAGS(1 << 29); return push_inst(compiler, ((op == SLJIT_ADD ? ADDI : SUBI) ^ inv_bits) | RD(dst) | RN(reg)); } if (imm > 0 && imm <= 0xfff) { CHECK_FLAGS(1 << 29); return push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(reg) | (imm << 10)); } nimm = -imm; if (nimm > 0 && nimm <= 0xfff) { CHECK_FLAGS(1 << 29); return push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(reg) | (nimm << 10)); } if (imm > 0 && imm <= 0xffffff && !(imm & 0xfff)) { CHECK_FLAGS(1 << 29); return push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(reg) | ((imm >> 12) << 10) | (1 << 22)); } if (nimm > 0 && nimm <= 0xffffff && !(nimm & 0xfff)) { CHECK_FLAGS(1 << 29); return push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(reg) | ((nimm >> 12) << 10) | (1 << 22)); } if (imm > 0 && imm <= 0xffffff && !(flags & SET_FLAGS)) { FAIL_IF(push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(reg) | ((imm >> 12) << 10) | (1 << 22))); return push_inst(compiler, (ADDI ^ inv_bits) | RD(dst) | RN(dst) | ((imm & 0xfff) << 10)); } if (nimm > 0 && nimm <= 0xffffff && !(flags & SET_FLAGS)) { FAIL_IF(push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(reg) | ((nimm >> 12) << 10) | (1 << 22))); return push_inst(compiler, (SUBI ^ inv_bits) | RD(dst) | RN(dst) | ((nimm & 0xfff) << 10)); } break; case SLJIT_AND: inst_bits = logical_imm(imm, LOGICAL_IMM_CHECK | ((flags & INT_OP) ? 16 : 32)); if (!inst_bits) break; CHECK_FLAGS(3 << 29); return push_inst(compiler, (ANDI ^ inv_bits) | RD(dst) | RN(reg) | inst_bits); case SLJIT_OR: case SLJIT_XOR: inst_bits = logical_imm(imm, LOGICAL_IMM_CHECK | ((flags & INT_OP) ? 16 : 32)); if (!inst_bits) break; if (op == SLJIT_OR) inst_bits |= ORRI; else inst_bits |= EORI; FAIL_IF(push_inst(compiler, (inst_bits ^ inv_bits) | RD(dst) | RN(reg))); goto set_flags; case SLJIT_SHL: if (flags & ARG1_IMM) break; if (flags & INT_OP) { imm &= 0x1f; FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | ((-imm & 0x1f) << 16) | ((31 - imm) << 10))); } else { imm &= 0x3f; FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | (1 << 22) | ((-imm & 0x3f) << 16) | ((63 - imm) << 10))); } goto set_flags; case SLJIT_LSHR: case SLJIT_ASHR: if (flags & ARG1_IMM) break; if (op == SLJIT_ASHR) inv_bits |= 1 << 30; if (flags & INT_OP) { imm &= 0x1f; FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | (imm << 16) | (31 << 10))); } else { imm &= 0x3f; FAIL_IF(push_inst(compiler, (UBFM ^ inv_bits) | RD(dst) | RN(arg1) | (1 << 22) | (imm << 16) | (63 << 10))); } goto set_flags; default: SLJIT_UNREACHABLE(); break; } if (flags & ARG2_IMM) { if (arg2 == 0) arg2 = TMP_ZERO; else { FAIL_IF(load_immediate(compiler, TMP_REG2, arg2)); arg2 = TMP_REG2; } } else { if (arg1 == 0) arg1 = TMP_ZERO; else { FAIL_IF(load_immediate(compiler, TMP_REG1, arg1)); arg1 = TMP_REG1; } } } /* Both arguments are registers. */ switch (op) { case SLJIT_MOV: case SLJIT_MOV_P: case SLJIT_MOVU: case SLJIT_MOVU_P: SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); if (dst == arg2) return SLJIT_SUCCESS; return push_inst(compiler, ORR | RD(dst) | RN(TMP_ZERO) | RM(arg2)); case SLJIT_MOV_U8: case SLJIT_MOVU_U8: SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); return push_inst(compiler, (UBFM ^ (1 << 31)) | RD(dst) | RN(arg2) | (7 << 10)); case SLJIT_MOV_S8: case SLJIT_MOVU_S8: SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); if (!(flags & INT_OP)) inv_bits |= 1 << 22; return push_inst(compiler, (SBFM ^ inv_bits) | RD(dst) | RN(arg2) | (7 << 10)); case SLJIT_MOV_U16: case SLJIT_MOVU_U16: SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); return push_inst(compiler, (UBFM ^ (1 << 31)) | RD(dst) | RN(arg2) | (15 << 10)); case SLJIT_MOV_S16: case SLJIT_MOVU_S16: SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); if (!(flags & INT_OP)) inv_bits |= 1 << 22; return push_inst(compiler, (SBFM ^ inv_bits) | RD(dst) | RN(arg2) | (15 << 10)); case SLJIT_MOV_U32: case SLJIT_MOVU_U32: SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); if ((flags & INT_OP) && dst == arg2) return SLJIT_SUCCESS; return push_inst(compiler, (ORR ^ (1 << 31)) | RD(dst) | RN(TMP_ZERO) | RM(arg2)); case SLJIT_MOV_S32: case SLJIT_MOVU_S32: SLJIT_ASSERT(!(flags & SET_FLAGS) && arg1 == TMP_REG1); if ((flags & INT_OP) && dst == arg2) return SLJIT_SUCCESS; return push_inst(compiler, SBFM | (1 << 22) | RD(dst) | RN(arg2) | (31 << 10)); case SLJIT_NOT: SLJIT_ASSERT(arg1 == TMP_REG1); FAIL_IF(push_inst(compiler, (ORN ^ inv_bits) | RD(dst) | RN(TMP_ZERO) | RM(arg2))); goto set_flags; case SLJIT_NEG: SLJIT_ASSERT(arg1 == TMP_REG1); if (flags & SET_FLAGS) inv_bits |= 1 << 29; return push_inst(compiler, (SUB ^ inv_bits) | RD(dst) | RN(TMP_ZERO) | RM(arg2)); case SLJIT_CLZ: SLJIT_ASSERT(arg1 == TMP_REG1); FAIL_IF(push_inst(compiler, (CLZ ^ inv_bits) | RD(dst) | RN(arg2))); goto set_flags; case SLJIT_ADD: CHECK_FLAGS(1 << 29); return push_inst(compiler, (ADD ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); case SLJIT_ADDC: CHECK_FLAGS(1 << 29); return push_inst(compiler, (ADC ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); case SLJIT_SUB: CHECK_FLAGS(1 << 29); return push_inst(compiler, (SUB ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); case SLJIT_SUBC: CHECK_FLAGS(1 << 29); return push_inst(compiler, (SBC ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); case SLJIT_MUL: if (!(flags & SET_FLAGS)) return push_inst(compiler, (MADD ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2) | RT2(TMP_ZERO)); if (flags & INT_OP) { FAIL_IF(push_inst(compiler, SMADDL | RD(dst) | RN(arg1) | RM(arg2) | (31 << 10))); FAIL_IF(push_inst(compiler, ADD | RD(TMP_LR) | RN(TMP_ZERO) | RM(dst) | (2 << 22) | (31 << 10))); return push_inst(compiler, SUBS | RD(TMP_ZERO) | RN(TMP_LR) | RM(dst) | (2 << 22) | (63 << 10)); } FAIL_IF(push_inst(compiler, SMULH | RD(TMP_LR) | RN(arg1) | RM(arg2))); FAIL_IF(push_inst(compiler, MADD | RD(dst) | RN(arg1) | RM(arg2) | RT2(TMP_ZERO))); return push_inst(compiler, SUBS | RD(TMP_ZERO) | RN(TMP_LR) | RM(dst) | (2 << 22) | (63 << 10)); case SLJIT_AND: CHECK_FLAGS(3 << 29); return push_inst(compiler, (AND ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2)); case SLJIT_OR: FAIL_IF(push_inst(compiler, (ORR ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); goto set_flags; case SLJIT_XOR: FAIL_IF(push_inst(compiler, (EOR ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); goto set_flags; case SLJIT_SHL: FAIL_IF(push_inst(compiler, (LSLV ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); goto set_flags; case SLJIT_LSHR: FAIL_IF(push_inst(compiler, (LSRV ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); goto set_flags; case SLJIT_ASHR: FAIL_IF(push_inst(compiler, (ASRV ^ inv_bits) | RD(dst) | RN(arg1) | RM(arg2))); goto set_flags; } SLJIT_UNREACHABLE(); return SLJIT_SUCCESS; set_flags: if (flags & SET_FLAGS) return push_inst(compiler, (SUBS ^ inv_bits) | RD(TMP_ZERO) | RN(dst) | RM(TMP_ZERO)); return SLJIT_SUCCESS; } #define STORE 0x01 #define SIGNED 0x02 #define UPDATE 0x04 #define ARG_TEST 0x08 #define BYTE_SIZE 0x000 #define HALF_SIZE 0x100 #define INT_SIZE 0x200 #define WORD_SIZE 0x300 #define MEM_SIZE_SHIFT(flags) ((flags) >> 8) static const sljit_ins sljit_mem_imm[4] = { /* u l */ 0x39400000 /* ldrb [reg,imm] */, /* u s */ 0x39000000 /* strb [reg,imm] */, /* s l */ 0x39800000 /* ldrsb [reg,imm] */, /* s s */ 0x39000000 /* strb [reg,imm] */, }; static const sljit_ins sljit_mem_simm[4] = { /* u l */ 0x38400000 /* ldurb [reg,imm] */, /* u s */ 0x38000000 /* sturb [reg,imm] */, /* s l */ 0x38800000 /* ldursb [reg,imm] */, /* s s */ 0x38000000 /* sturb [reg,imm] */, }; static const sljit_ins sljit_mem_pre_simm[4] = { /* u l */ 0x38400c00 /* ldrb [reg,imm]! */, /* u s */ 0x38000c00 /* strb [reg,imm]! */, /* s l */ 0x38800c00 /* ldrsb [reg,imm]! */, /* s s */ 0x38000c00 /* strb [reg,imm]! */, }; static const sljit_ins sljit_mem_reg[4] = { /* u l */ 0x38606800 /* ldrb [reg,reg] */, /* u s */ 0x38206800 /* strb [reg,reg] */, /* s l */ 0x38a06800 /* ldrsb [reg,reg] */, /* s s */ 0x38206800 /* strb [reg,reg] */, }; /* 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_inst(compiler, ADDI | RD(dst) | RN(reg) | (value << 10)); if (value <= 0xffffff && !(value & 0xfff)) return push_inst(compiler, ADDI | (1 << 22) | RD(dst) | RN(reg) | (value >> 2)); } else { value = -value; if (value <= 0xfff) return push_inst(compiler, SUBI | RD(dst) | RN(reg) | (value << 10)); if (value <= 0xffffff && !(value & 0xfff)) return push_inst(compiler, SUBI | (1 << 22) | RD(dst) | RN(reg) | (value >> 2)); } return SLJIT_ERR_UNSUPPORTED; } /* Can perform an operation using at most 1 instruction. */ static sljit_s32 getput_arg_fast(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw) { sljit_u32 shift = MEM_SIZE_SHIFT(flags); SLJIT_ASSERT(arg & SLJIT_MEM); if (SLJIT_UNLIKELY(flags & UPDATE)) { if ((arg & REG_MASK) && !(arg & OFFS_REG_MASK) && argw <= 255 && argw >= -256) { if (SLJIT_UNLIKELY(flags & ARG_TEST)) return 1; arg &= REG_MASK; argw &= 0x1ff; FAIL_IF(push_inst(compiler, sljit_mem_pre_simm[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | (argw << 12))); return -1; } return 0; } if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) { argw &= 0x3; if (argw && argw != shift) return 0; if (SLJIT_UNLIKELY(flags & ARG_TEST)) return 1; FAIL_IF(push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | (argw ? (1 << 12) : 0))); return -1; } arg &= REG_MASK; if (argw >= 0 && (argw >> shift) <= 0xfff && (argw & ((1 << shift) - 1)) == 0) { if (SLJIT_UNLIKELY(flags & ARG_TEST)) return 1; FAIL_IF(push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | (argw << (10 - shift)))); return -1; } if (argw > 255 || argw < -256) return 0; if (SLJIT_UNLIKELY(flags & ARG_TEST)) return 1; FAIL_IF(push_inst(compiler, sljit_mem_simm[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | ((argw & 0x1ff) << 12))); return -1; } /* see getput_arg below. Note: can_cache is called only for binary operators. Those operators always uses word arguments without write back. */ static sljit_s32 can_cache(sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw) { sljit_sw diff; if ((arg & OFFS_REG_MASK) || !(next_arg & SLJIT_MEM)) return 0; if (!(arg & REG_MASK)) { diff = argw - next_argw; if (diff <= 0xfff && diff >= -0xfff) return 1; return 0; } if (argw == next_argw) return 1; diff = argw - next_argw; if (arg == next_arg && diff <= 0xfff && diff >= -0xfff) return 1; return 0; } /* Emit the necessary instructions. See can_cache above. */ static sljit_s32 getput_arg(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw, sljit_s32 next_arg, sljit_sw next_argw) { sljit_u32 shift = MEM_SIZE_SHIFT(flags); sljit_s32 tmp_r, other_r; sljit_sw diff; SLJIT_ASSERT(arg & SLJIT_MEM); if (!(next_arg & SLJIT_MEM)) { next_arg = 0; next_argw = 0; } tmp_r = (flags & STORE) ? TMP_REG3 : reg; if (SLJIT_UNLIKELY((flags & UPDATE) && (arg & REG_MASK))) { /* Update only applies if a base register exists. */ other_r = OFFS_REG(arg); if (!other_r) { other_r = arg & REG_MASK; SLJIT_ASSERT(other_r != reg); if (argw >= 0 && argw <= 0xffffff) { if ((argw & 0xfff) != 0) FAIL_IF(push_inst(compiler, ADDI | RD(other_r) | RN(other_r) | ((argw & 0xfff) << 10))); if (argw >> 12) FAIL_IF(push_inst(compiler, ADDI | (1 << 22) | RD(other_r) | RN(other_r) | ((argw >> 12) << 10))); return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(other_r)); } else if (argw < 0 && argw >= -0xffffff) { argw = -argw; if ((argw & 0xfff) != 0) FAIL_IF(push_inst(compiler, SUBI | RD(other_r) | RN(other_r) | ((argw & 0xfff) << 10))); if (argw >> 12) FAIL_IF(push_inst(compiler, SUBI | (1 << 22) | RD(other_r) | RN(other_r) | ((argw >> 12) << 10))); return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(other_r)); } if (compiler->cache_arg == SLJIT_MEM) { if (argw == compiler->cache_argw) { other_r = TMP_REG3; argw = 0; } else if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) { FAIL_IF(compiler->error); compiler->cache_argw = argw; other_r = TMP_REG3; argw = 0; } } if (argw) { FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); compiler->cache_arg = SLJIT_MEM; compiler->cache_argw = argw; other_r = TMP_REG3; argw = 0; } } /* No caching here. */ arg &= REG_MASK; FAIL_IF(push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(other_r))); return push_inst(compiler, ADD | RD(arg) | RN(arg) | RM(other_r)); } if (arg & OFFS_REG_MASK) { other_r = OFFS_REG(arg); arg &= REG_MASK; FAIL_IF(push_inst(compiler, ADD | RD(tmp_r) | RN(arg) | RM(other_r) | ((argw & 0x3) << 10))); return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(tmp_r)); } if (compiler->cache_arg == arg) { diff = argw - compiler->cache_argw; if (diff <= 255 && diff >= -256) return push_inst(compiler, sljit_mem_simm[flags & 0x3] | (shift << 30) | RT(reg) | RN(TMP_REG3) | ((diff & 0x1ff) << 12)); if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, diff) != SLJIT_ERR_UNSUPPORTED) { FAIL_IF(compiler->error); return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg)); } } if (argw >= 0 && argw <= 0xffffff && (argw & ((1 << shift) - 1)) == 0) { FAIL_IF(push_inst(compiler, ADDI | (1 << 22) | RD(tmp_r) | RN(arg & REG_MASK) | ((argw >> 12) << 10))); return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(tmp_r) | ((argw & 0xfff) << (10 - shift))); } diff = argw - next_argw; next_arg = (arg & REG_MASK) && (arg == next_arg) && diff <= 0xfff && diff >= -0xfff && diff != 0; arg &= REG_MASK; if (arg && compiler->cache_arg == SLJIT_MEM) { if (compiler->cache_argw == argw) return push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(TMP_REG3)); if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) { FAIL_IF(compiler->error); compiler->cache_argw = argw; return push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(TMP_REG3)); } } compiler->cache_argw = argw; if (next_arg && emit_set_delta(compiler, TMP_REG3, arg, argw) != SLJIT_ERR_UNSUPPORTED) { FAIL_IF(compiler->error); compiler->cache_arg = SLJIT_MEM | arg; arg = 0; } else { FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); compiler->cache_arg = SLJIT_MEM; if (next_arg) { FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG3) | RN(TMP_REG3) | RM(arg))); compiler->cache_arg = SLJIT_MEM | arg; arg = 0; } } if (arg) return push_inst(compiler, sljit_mem_reg[flags & 0x3] | (shift << 30) | RT(reg) | RN(arg) | RM(TMP_REG3)); return push_inst(compiler, sljit_mem_imm[flags & 0x3] | (shift << 30) | RT(reg) | RN(TMP_REG3)); } static SLJIT_INLINE sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw) { if (getput_arg_fast(compiler, flags, reg, arg, argw)) return compiler->error; compiler->cache_arg = 0; compiler->cache_argw = 0; return getput_arg(compiler, flags, reg, arg, argw, 0, 0); } static SLJIT_INLINE sljit_s32 emit_op_mem2(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg1, sljit_sw arg1w, sljit_s32 arg2, sljit_sw arg2w) { if (getput_arg_fast(compiler, flags, reg, arg1, arg1w)) return compiler->error; return getput_arg(compiler, flags, reg, arg1, arg1w, arg2, arg2w); } /* --------------------------------------------------------------------- */ /* Entry, exit */ /* --------------------------------------------------------------------- */ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler, sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds, sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) { sljit_s32 i, tmp, offs, prev, saved_regs_size; CHECK_ERROR(); CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size)); set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size); saved_regs_size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 0); local_size += saved_regs_size + SLJIT_LOCALS_OFFSET; local_size = (local_size + 15) & ~0xf; compiler->local_size = local_size; SLJIT_ASSERT(local_size >= 0); if ((size_t)local_size <= (63 * sizeof(sljit_sw))) { FAIL_IF(push_inst(compiler, STP_PRE | 29 | RT2(TMP_LR) | RN(TMP_SP) | ((-(local_size >> 3) & 0x7f) << 15))); FAIL_IF(push_inst(compiler, ADDI | RD(SLJIT_SP) | RN(TMP_SP) | (0 << 10))); offs = (local_size - saved_regs_size) << (15 - 3); } else { offs = 0 << 15; if (saved_regs_size & 0x8) { offs = 1 << 15; saved_regs_size += sizeof(sljit_sw); } local_size -= saved_regs_size + SLJIT_LOCALS_OFFSET; if (saved_regs_size > 0) FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | (saved_regs_size << 10))); } tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG; prev = -1; for (i = SLJIT_S0; i >= tmp; i--) { if (prev == -1) { if (!(offs & (1 << 15))) { prev = i; continue; } FAIL_IF(push_inst(compiler, STRI | RT(i) | RN(TMP_SP) | (offs >> 5))); offs += 1 << 15; continue; } FAIL_IF(push_inst(compiler, STP | RT(prev) | RT2(i) | RN(TMP_SP) | offs)); offs += 2 << 15; prev = -1; } for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) { if (prev == -1) { if (!(offs & (1 << 15))) { prev = i; continue; } FAIL_IF(push_inst(compiler, STRI | RT(i) | RN(TMP_SP) | (offs >> 5))); offs += 1 << 15; continue; } FAIL_IF(push_inst(compiler, STP | RT(prev) | RT2(i) | RN(TMP_SP) | offs)); offs += 2 << 15; prev = -1; } SLJIT_ASSERT(prev == -1); SLJIT_ASSERT(compiler->local_size >= 0); if ((size_t)compiler->local_size > (63 * sizeof(sljit_sw))) { /* The local_size is already adjusted by the saved registers. */ if (local_size > 0xfff) { FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | ((local_size >> 12) << 10) | (1 << 22))); local_size &= 0xfff; } if (local_size) FAIL_IF(push_inst(compiler, SUBI | RD(TMP_SP) | RN(TMP_SP) | (local_size << 10))); FAIL_IF(push_inst(compiler, STP_PRE | 29 | RT2(TMP_LR) | RN(TMP_SP) | ((-(16 >> 3) & 0x7f) << 15))); FAIL_IF(push_inst(compiler, ADDI | RD(SLJIT_SP) | RN(TMP_SP) | (0 << 10))); } if (args >= 1) FAIL_IF(push_inst(compiler, ORR | RD(SLJIT_S0) | RN(TMP_ZERO) | RM(SLJIT_R0))); if (args >= 2) FAIL_IF(push_inst(compiler, ORR | RD(SLJIT_S1) | RN(TMP_ZERO) | RM(SLJIT_R1))); if (args >= 3) FAIL_IF(push_inst(compiler, ORR | RD(SLJIT_S2) | RN(TMP_ZERO) | RM(SLJIT_R2))); return SLJIT_SUCCESS; } SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler, sljit_s32 options, sljit_s32 args, sljit_s32 scratches, sljit_s32 saveds, sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) { CHECK_ERROR(); CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size)); set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size); local_size += GET_SAVED_REGISTERS_SIZE(scratches, saveds, 0) + SLJIT_LOCALS_OFFSET; local_size = (local_size + 15) & ~0xf; compiler->local_size = local_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 local_size; sljit_s32 i, tmp, offs, prev, saved_regs_size; CHECK_ERROR(); CHECK(check_sljit_emit_return(compiler, op, src, srcw)); FAIL_IF(emit_mov_before_return(compiler, op, src, srcw)); local_size = compiler->local_size; saved_regs_size = GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 0); SLJIT_ASSERT(local_size >= 0); if ((size_t)local_size <= (63 * sizeof(sljit_sw))) offs = (local_size - saved_regs_size) << (15 - 3); else { FAIL_IF(push_inst(compiler, LDP_PST | 29 | RT2(TMP_LR) | RN(TMP_SP) | (((16 >> 3) & 0x7f) << 15))); offs = 0 << 15; if (saved_regs_size & 0x8) { offs = 1 << 15; saved_regs_size += sizeof(sljit_sw); } local_size -= saved_regs_size + SLJIT_LOCALS_OFFSET; if (local_size > 0xfff) { FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | ((local_size >> 12) << 10) | (1 << 22))); local_size &= 0xfff; } if (local_size) FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | (local_size << 10))); } tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG; prev = -1; for (i = SLJIT_S0; i >= tmp; i--) { if (prev == -1) { if (!(offs & (1 << 15))) { prev = i; continue; } FAIL_IF(push_inst(compiler, LDRI | RT(i) | RN(TMP_SP) | (offs >> 5))); offs += 1 << 15; continue; } FAIL_IF(push_inst(compiler, LDP | RT(prev) | RT2(i) | RN(TMP_SP) | offs)); offs += 2 << 15; prev = -1; } for (i = compiler->scratches; i >= SLJIT_FIRST_SAVED_REG; i--) { if (prev == -1) { if (!(offs & (1 << 15))) { prev = i; continue; } FAIL_IF(push_inst(compiler, LDRI | RT(i) | RN(TMP_SP) | (offs >> 5))); offs += 1 << 15; continue; } FAIL_IF(push_inst(compiler, LDP | RT(prev) | RT2(i) | RN(TMP_SP) | offs)); offs += 2 << 15; prev = -1; } SLJIT_ASSERT(prev == -1); SLJIT_ASSERT(compiler->local_size >= 0); if ((size_t)compiler->local_size <= (63 * sizeof(sljit_sw))) { FAIL_IF(push_inst(compiler, LDP_PST | 29 | RT2(TMP_LR) | RN(TMP_SP) | (((local_size >> 3) & 0x7f) << 15))); } else if (saved_regs_size > 0) { FAIL_IF(push_inst(compiler, ADDI | RD(TMP_SP) | RN(TMP_SP) | (saved_regs_size << 10))); } FAIL_IF(push_inst(compiler, RET | RN(TMP_LR))); return SLJIT_SUCCESS; } /* --------------------------------------------------------------------- */ /* Operators */ /* --------------------------------------------------------------------- */ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op) { sljit_ins inv_bits = (op & SLJIT_I32_OP) ? (1 << 31) : 0; CHECK_ERROR(); CHECK(check_sljit_emit_op0(compiler, op)); op = GET_OPCODE(op); switch (op) { case SLJIT_BREAKPOINT: return push_inst(compiler, BRK); case SLJIT_NOP: return push_inst(compiler, NOP); case SLJIT_LMUL_UW: case SLJIT_LMUL_SW: FAIL_IF(push_inst(compiler, ORR | RD(TMP_REG1) | RN(TMP_ZERO) | RM(SLJIT_R0))); FAIL_IF(push_inst(compiler, MADD | RD(SLJIT_R0) | RN(SLJIT_R0) | RM(SLJIT_R1) | RT2(TMP_ZERO))); return push_inst(compiler, (op == SLJIT_LMUL_UW ? UMULH : SMULH) | RD(SLJIT_R1) | RN(TMP_REG1) | RM(SLJIT_R1)); case SLJIT_DIVMOD_UW: case SLJIT_DIVMOD_SW: FAIL_IF(push_inst(compiler, (ORR ^ inv_bits) | RD(TMP_REG1) | RN(TMP_ZERO) | RM(SLJIT_R0))); FAIL_IF(push_inst(compiler, ((op == SLJIT_DIVMOD_UW ? UDIV : SDIV) ^ inv_bits) | RD(SLJIT_R0) | RN(SLJIT_R0) | RM(SLJIT_R1))); FAIL_IF(push_inst(compiler, (MADD ^ inv_bits) | RD(SLJIT_R1) | RN(SLJIT_R0) | RM(SLJIT_R1) | RT2(TMP_ZERO))); return push_inst(compiler, (SUB ^ inv_bits) | RD(SLJIT_R1) | RN(TMP_REG1) | RM(SLJIT_R1)); case SLJIT_DIV_UW: case SLJIT_DIV_SW: return push_inst(compiler, ((op == SLJIT_DIV_UW ? UDIV : SDIV) ^ inv_bits) | RD(SLJIT_R0) | RN(SLJIT_R0) | RM(SLJIT_R1)); } 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, mem_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); compiler->cache_arg = 0; compiler->cache_argw = 0; dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; op = GET_OPCODE(op); if (op >= SLJIT_MOV && op <= SLJIT_MOVU_P) { switch (op) { case SLJIT_MOV: 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; case SLJIT_MOV_U32: flags = INT_SIZE; if (src & SLJIT_IMM) srcw = (sljit_u32)srcw; break; case SLJIT_MOV_S32: flags = INT_SIZE | SIGNED; if (src & SLJIT_IMM) srcw = (sljit_s32)srcw; break; case SLJIT_MOVU: case SLJIT_MOVU_P: flags = WORD_SIZE | UPDATE; break; case SLJIT_MOVU_U8: flags = BYTE_SIZE | UPDATE; if (src & SLJIT_IMM) srcw = (sljit_u8)srcw; break; case SLJIT_MOVU_S8: flags = BYTE_SIZE | SIGNED | UPDATE; if (src & SLJIT_IMM) srcw = (sljit_s8)srcw; break; case SLJIT_MOVU_U16: flags = HALF_SIZE | UPDATE; if (src & SLJIT_IMM) srcw = (sljit_u16)srcw; break; case SLJIT_MOVU_S16: flags = HALF_SIZE | SIGNED | UPDATE; if (src & SLJIT_IMM) srcw = (sljit_s16)srcw; break; case SLJIT_MOVU_U32: flags = INT_SIZE | UPDATE; if (src & SLJIT_IMM) srcw = (sljit_u32)srcw; break; case SLJIT_MOVU_S32: flags = INT_SIZE | SIGNED | UPDATE; if (src & SLJIT_IMM) srcw = (sljit_s32)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_REG1, srcw)); else if (src & SLJIT_MEM) { if (getput_arg_fast(compiler, flags, dst_r, src, srcw)) FAIL_IF(compiler->error); else FAIL_IF(getput_arg(compiler, flags, dst_r, src, srcw, dst, dstw)); } else { if (dst_r != TMP_REG1) return emit_op_imm(compiler, op | ((op_flags & SLJIT_I32_OP) ? INT_OP : 0), dst_r, TMP_REG1, src); dst_r = src; } if (dst & SLJIT_MEM) { if (getput_arg_fast(compiler, flags | STORE, dst_r, dst, dstw)) return compiler->error; else return getput_arg(compiler, flags | STORE, dst_r, dst, dstw, 0, 0); } return SLJIT_SUCCESS; } flags = HAS_FLAGS(op_flags) ? SET_FLAGS : 0; mem_flags = WORD_SIZE; if (op_flags & SLJIT_I32_OP) { flags |= INT_OP; mem_flags = INT_SIZE; } if (dst == SLJIT_UNUSED) flags |= UNUSED_RETURN; if (src & SLJIT_MEM) { if (getput_arg_fast(compiler, mem_flags, TMP_REG2, src, srcw)) FAIL_IF(compiler->error); else FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src, srcw, dst, dstw)); src = TMP_REG2; } if (src & SLJIT_IMM) { flags |= ARG2_IMM; if (op_flags & SLJIT_I32_OP) srcw = (sljit_s32)srcw; } else srcw = src; emit_op_imm(compiler, flags | op, dst_r, TMP_REG1, srcw); if (dst & SLJIT_MEM) { if (getput_arg_fast(compiler, mem_flags | STORE, dst_r, dst, dstw)) return compiler->error; else return getput_arg(compiler, mem_flags | STORE, dst_r, dst, dstw, 0, 0); } 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_r, flags, mem_flags; 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); compiler->cache_arg = 0; compiler->cache_argw = 0; dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; flags = HAS_FLAGS(op) ? SET_FLAGS : 0; mem_flags = WORD_SIZE; if (op & SLJIT_I32_OP) { flags |= INT_OP; mem_flags = INT_SIZE; } if (dst == SLJIT_UNUSED) flags |= UNUSED_RETURN; if ((dst & SLJIT_MEM) && !getput_arg_fast(compiler, mem_flags | STORE | ARG_TEST, TMP_REG1, dst, dstw)) flags |= SLOW_DEST; if (src1 & SLJIT_MEM) { if (getput_arg_fast(compiler, mem_flags, TMP_REG1, src1, src1w)) FAIL_IF(compiler->error); else flags |= SLOW_SRC1; } if (src2 & SLJIT_MEM) { if (getput_arg_fast(compiler, mem_flags, TMP_REG2, src2, src2w)) FAIL_IF(compiler->error); else flags |= SLOW_SRC2; } if ((flags & (SLOW_SRC1 | SLOW_SRC2)) == (SLOW_SRC1 | SLOW_SRC2)) { if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) { FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src2, src2w, src1, src1w)); FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG1, src1, src1w, dst, dstw)); } else { FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG1, src1, src1w, src2, src2w)); FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src2, src2w, dst, dstw)); } } else if (flags & SLOW_SRC1) FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG1, src1, src1w, dst, dstw)); else if (flags & SLOW_SRC2) FAIL_IF(getput_arg(compiler, mem_flags, TMP_REG2, src2, src2w, dst, dstw)); if (src1 & SLJIT_MEM) src1 = TMP_REG1; if (src2 & SLJIT_MEM) src2 = TMP_REG2; if (src1 & SLJIT_IMM) flags |= ARG1_IMM; else src1w = src1; if (src2 & SLJIT_IMM) flags |= ARG2_IMM; else src2w = src2; emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src1w, src2w); if (dst & SLJIT_MEM) { if (!(flags & SLOW_DEST)) { getput_arg_fast(compiler, mem_flags | STORE, dst_r, dst, dstw); return compiler->error; } return getput_arg(compiler, mem_flags | STORE, TMP_REG1, dst, dstw, 0, 0); } 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 reg; } SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler, void *instruction, sljit_s32 size) { CHECK_ERROR(); CHECK(check_sljit_emit_op_custom(compiler, instruction, size)); return push_inst(compiler, *(sljit_ins*)instruction); } /* --------------------------------------------------------------------- */ /* Floating point operators */ /* --------------------------------------------------------------------- */ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_is_fpu_available(void) { #ifdef SLJIT_IS_FPU_AVAILABLE return SLJIT_IS_FPU_AVAILABLE; #else /* Available by default. */ return 1; #endif } static sljit_s32 emit_fop_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw) { sljit_u32 shift = MEM_SIZE_SHIFT(flags); sljit_ins ins_bits = (shift << 30); sljit_s32 other_r; sljit_sw diff; SLJIT_ASSERT(arg & SLJIT_MEM); if (!(flags & STORE)) ins_bits |= 1 << 22; if (arg & OFFS_REG_MASK) { argw &= 3; if (!argw || argw == shift) return push_inst(compiler, STR_FR | ins_bits | VT(reg) | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | (argw ? (1 << 12) : 0)); other_r = OFFS_REG(arg); arg &= REG_MASK; FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg) | RM(other_r) | (argw << 10))); arg = TMP_REG1; argw = 0; } arg &= REG_MASK; if (arg && argw >= 0 && ((argw >> shift) <= 0xfff) && (argw & ((1 << shift) - 1)) == 0) return push_inst(compiler, STR_FI | ins_bits | VT(reg) | RN(arg) | (argw << (10 - shift))); if (arg && argw <= 255 && argw >= -256) return push_inst(compiler, STUR_FI | ins_bits | VT(reg) | RN(arg) | ((argw & 0x1ff) << 12)); /* Slow cases */ if (compiler->cache_arg == SLJIT_MEM && argw != compiler->cache_argw) { diff = argw - compiler->cache_argw; if (!arg && diff <= 255 && diff >= -256) return push_inst(compiler, STUR_FI | ins_bits | VT(reg) | RN(TMP_REG3) | ((diff & 0x1ff) << 12)); if (emit_set_delta(compiler, TMP_REG3, TMP_REG3, argw - compiler->cache_argw) != SLJIT_ERR_UNSUPPORTED) { FAIL_IF(compiler->error); compiler->cache_argw = argw; } } if (compiler->cache_arg != SLJIT_MEM || argw != compiler->cache_argw) { compiler->cache_arg = SLJIT_MEM; compiler->cache_argw = argw; FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); } if (arg & REG_MASK) return push_inst(compiler, STR_FR | ins_bits | VT(reg) | RN(arg) | RM(TMP_REG3)); return push_inst(compiler, STR_FI | ins_bits | VT(reg) | RN(TMP_REG3)); } 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) { sljit_s32 dst_r = SLOW_IS_REG(dst) ? dst : TMP_REG1; sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; if (GET_OPCODE(op) == SLJIT_CONV_S32_FROM_F64) inv_bits |= (1 << 31); if (src & SLJIT_MEM) { emit_fop_mem(compiler, (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE, TMP_FREG1, src, srcw); src = TMP_FREG1; } FAIL_IF(push_inst(compiler, (FCVTZS ^ inv_bits) | RD(dst_r) | VN(src))); if (dst_r == TMP_REG1 && dst != SLJIT_UNUSED) return emit_op_mem(compiler, ((GET_OPCODE(op) == SLJIT_CONV_S32_FROM_F64) ? INT_SIZE : WORD_SIZE) | STORE, TMP_REG1, dst, dstw); return SLJIT_SUCCESS; } static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 dst, sljit_sw dstw, sljit_s32 src, sljit_sw srcw) { sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32) inv_bits |= (1 << 31); if (src & SLJIT_MEM) { emit_op_mem(compiler, ((GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32) ? INT_SIZE : WORD_SIZE), TMP_REG1, src, srcw); src = TMP_REG1; } else if (src & SLJIT_IMM) { #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_S32) srcw = (sljit_s32)srcw; #endif FAIL_IF(load_immediate(compiler, TMP_REG1, srcw)); src = TMP_REG1; } FAIL_IF(push_inst(compiler, (SCVTF ^ inv_bits) | VD(dst_r) | RN(src))); if (dst & SLJIT_MEM) return emit_fop_mem(compiler, ((op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE) | STORE, 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) { sljit_s32 mem_flags = (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE; sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; if (src1 & SLJIT_MEM) { emit_fop_mem(compiler, mem_flags, TMP_FREG1, src1, src1w); src1 = TMP_FREG1; } if (src2 & SLJIT_MEM) { emit_fop_mem(compiler, mem_flags, TMP_FREG2, src2, src2w); src2 = TMP_FREG2; } return push_inst(compiler, (FCMP ^ inv_bits) | VN(src1) | VM(src2)); } 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, mem_flags = (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE; sljit_ins inv_bits; CHECK_ERROR(); compiler->cache_arg = 0; compiler->cache_argw = 0; SLJIT_COMPILE_ASSERT((INT_SIZE ^ 0x100) == WORD_SIZE, must_be_one_bit_difference); SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw); inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; if (src & SLJIT_MEM) { emit_fop_mem(compiler, (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_F32) ? (mem_flags ^ 0x100) : mem_flags, dst_r, src, srcw); src = dst_r; } switch (GET_OPCODE(op)) { case SLJIT_MOV_F64: if (src != dst_r) { if (dst_r != TMP_FREG1) FAIL_IF(push_inst(compiler, (FMOV ^ inv_bits) | VD(dst_r) | VN(src))); else dst_r = src; } break; case SLJIT_NEG_F64: FAIL_IF(push_inst(compiler, (FNEG ^ inv_bits) | VD(dst_r) | VN(src))); break; case SLJIT_ABS_F64: FAIL_IF(push_inst(compiler, (FABS ^ inv_bits) | VD(dst_r) | VN(src))); break; case SLJIT_CONV_F64_FROM_F32: FAIL_IF(push_inst(compiler, FCVT | ((op & SLJIT_F32_OP) ? (1 << 22) : (1 << 15)) | VD(dst_r) | VN(src))); break; } if (dst & SLJIT_MEM) return emit_fop_mem(compiler, mem_flags | STORE, 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, mem_flags = (op & SLJIT_F32_OP) ? INT_SIZE : WORD_SIZE; sljit_ins inv_bits = (op & SLJIT_F32_OP) ? (1 << 22) : 0; 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); compiler->cache_arg = 0; compiler->cache_argw = 0; dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; if (src1 & SLJIT_MEM) { emit_fop_mem(compiler, mem_flags, TMP_FREG1, src1, src1w); src1 = TMP_FREG1; } if (src2 & SLJIT_MEM) { emit_fop_mem(compiler, mem_flags, TMP_FREG2, src2, src2w); src2 = TMP_FREG2; } switch (GET_OPCODE(op)) { case SLJIT_ADD_F64: FAIL_IF(push_inst(compiler, (FADD ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2))); break; case SLJIT_SUB_F64: FAIL_IF(push_inst(compiler, (FSUB ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2))); break; case SLJIT_MUL_F64: FAIL_IF(push_inst(compiler, (FMUL ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2))); break; case SLJIT_DIV_F64: FAIL_IF(push_inst(compiler, (FDIV ^ inv_bits) | VD(dst_r) | VN(src1) | VM(src2))); break; } if (!(dst & SLJIT_MEM)) return SLJIT_SUCCESS; return emit_fop_mem(compiler, mem_flags | STORE, TMP_FREG1, dst, dstw); } /* --------------------------------------------------------------------- */ /* 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); /* For UNUSED dst. Uncommon, but possible. */ if (dst == SLJIT_UNUSED) return SLJIT_SUCCESS; if (FAST_IS_REG(dst)) return push_inst(compiler, ORR | RD(dst) | RN(TMP_ZERO) | RM(TMP_LR)); /* Memory. */ return emit_op_mem(compiler, WORD_SIZE | STORE, TMP_LR, dst, dstw); } SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw) { CHECK_ERROR(); CHECK(check_sljit_emit_fast_return(compiler, src, srcw)); ADJUST_LOCAL_OFFSET(src, srcw); if (FAST_IS_REG(src)) FAIL_IF(push_inst(compiler, ORR | RD(TMP_LR) | RN(TMP_ZERO) | RM(src))); else if (src & SLJIT_MEM) FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_LR, src, srcw)); else if (src & SLJIT_IMM) FAIL_IF(load_immediate(compiler, TMP_LR, srcw)); return push_inst(compiler, RET | RN(TMP_LR)); } /* --------------------------------------------------------------------- */ /* 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 0x1; case SLJIT_NOT_EQUAL: case SLJIT_MUL_OVERFLOW: case SLJIT_NOT_EQUAL_F64: return 0x0; case SLJIT_LESS: case SLJIT_LESS_F64: return 0x2; case SLJIT_GREATER_EQUAL: case SLJIT_GREATER_EQUAL_F64: return 0x3; case SLJIT_GREATER: case SLJIT_GREATER_F64: return 0x9; case SLJIT_LESS_EQUAL: case SLJIT_LESS_EQUAL_F64: return 0x8; case SLJIT_SIG_LESS: return 0xa; case SLJIT_SIG_GREATER_EQUAL: return 0xb; case SLJIT_SIG_GREATER: return 0xd; case SLJIT_SIG_LESS_EQUAL: return 0xc; case SLJIT_OVERFLOW: case SLJIT_UNORDERED_F64: return 0x7; case SLJIT_NOT_OVERFLOW: case SLJIT_ORDERED_F64: return 0x6; default: 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; 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; if (type < SLJIT_JUMP) { jump->flags |= IS_COND; PTR_FAIL_IF(push_inst(compiler, B_CC | (6 << 5) | get_cc(type))); } else if (type >= SLJIT_FAST_CALL) jump->flags |= IS_BL; PTR_FAIL_IF(emit_imm64_const(compiler, TMP_REG1, 0)); jump->addr = compiler->size; PTR_FAIL_IF(push_inst(compiler, ((type >= SLJIT_FAST_CALL) ? BLR : BR) | RN(TMP_REG1))); return jump; } static SLJIT_INLINE struct sljit_jump* emit_cmp_to0(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw) { struct sljit_jump *jump; sljit_ins inv_bits = (type & SLJIT_I32_OP) ? (1 << 31) : 0; SLJIT_ASSERT((type & 0xff) == SLJIT_EQUAL || (type & 0xff) == SLJIT_NOT_EQUAL); ADJUST_LOCAL_OFFSET(src, srcw); jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); PTR_FAIL_IF(!jump); set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP); jump->flags |= IS_CBZ | IS_COND; if (src & SLJIT_MEM) { PTR_FAIL_IF(emit_op_mem(compiler, inv_bits ? INT_SIZE : WORD_SIZE, TMP_REG1, src, srcw)); src = TMP_REG1; } else if (src & SLJIT_IMM) { PTR_FAIL_IF(load_immediate(compiler, TMP_REG1, srcw)); src = TMP_REG1; } SLJIT_ASSERT(FAST_IS_REG(src)); if ((type & 0xff) == SLJIT_EQUAL) inv_bits |= 1 << 24; PTR_FAIL_IF(push_inst(compiler, (CBZ ^ inv_bits) | (6 << 5) | RT(src))); PTR_FAIL_IF(emit_imm64_const(compiler, TMP_REG1, 0)); jump->addr = compiler->size; PTR_FAIL_IF(push_inst(compiler, BR | RN(TMP_REG1))); return jump; } 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); /* In ARM, we don't need to touch the arguments. */ if (!(src & SLJIT_IMM)) { if (src & SLJIT_MEM) { FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, src, srcw)); src = TMP_REG1; } return push_inst(compiler, ((type >= SLJIT_FAST_CALL) ? BLR : BR) | RN(src)); } 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_imm64_const(compiler, TMP_REG1, 0)); jump->addr = compiler->size; return push_inst(compiler, ((type >= SLJIT_FAST_CALL) ? BLR : BR) | RN(TMP_REG1)); } 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 src, sljit_sw srcw, sljit_s32 type) { sljit_s32 dst_r, flags, mem_flags; sljit_ins cc; CHECK_ERROR(); CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, src, srcw, type)); ADJUST_LOCAL_OFFSET(dst, dstw); ADJUST_LOCAL_OFFSET(src, srcw); if (dst == SLJIT_UNUSED) return SLJIT_SUCCESS; cc = get_cc(type & 0xff); dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1; if (GET_OPCODE(op) < SLJIT_ADD) { FAIL_IF(push_inst(compiler, CSINC | (cc << 12) | RD(dst_r) | RN(TMP_ZERO) | RM(TMP_ZERO))); if (dst_r != TMP_REG1) return SLJIT_SUCCESS; return emit_op_mem(compiler, (GET_OPCODE(op) == SLJIT_MOV ? WORD_SIZE : INT_SIZE) | STORE, TMP_REG1, dst, dstw); } compiler->cache_arg = 0; compiler->cache_argw = 0; flags = HAS_FLAGS(op) ? SET_FLAGS : 0; mem_flags = WORD_SIZE; if (op & SLJIT_I32_OP) { flags |= INT_OP; mem_flags = INT_SIZE; } if (src & SLJIT_MEM) { FAIL_IF(emit_op_mem2(compiler, mem_flags, TMP_REG1, src, srcw, dst, dstw)); src = TMP_REG1; srcw = 0; } else if (src & SLJIT_IMM) flags |= ARG1_IMM; FAIL_IF(push_inst(compiler, CSINC | (cc << 12) | RD(TMP_REG2) | RN(TMP_ZERO) | RM(TMP_ZERO))); emit_op_imm(compiler, flags | GET_OPCODE(op), dst_r, src, TMP_REG2); if (dst_r != TMP_REG1) return SLJIT_SUCCESS; return emit_op_mem2(compiler, mem_flags | STORE, TMP_REG1, dst, dstw, 0, 0); } 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 = SLOW_IS_REG(dst) ? dst : TMP_REG1; PTR_FAIL_IF(emit_imm64_const(compiler, dst_r, init_value)); if (dst & SLJIT_MEM) PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE | STORE, dst_r, dst, dstw)); return const_; } SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset) { sljit_ins* inst = (sljit_ins*)addr; modify_imm64_const(inst, new_target); inst = (sljit_ins *)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_ins* inst = (sljit_ins*)addr; modify_imm64_const(inst, new_constant); inst = (sljit_ins *)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); SLJIT_CACHE_FLUSH(inst, inst + 4); }