diff options
Diffstat (limited to 'sljit/sljitNativeARM_T2_32.c')
-rw-r--r-- | sljit/sljitNativeARM_T2_32.c | 125 |
1 files changed, 102 insertions, 23 deletions
diff --git a/sljit/sljitNativeARM_T2_32.c b/sljit/sljitNativeARM_T2_32.c index 653c638..5fff69b 100644 --- a/sljit/sljitNativeARM_T2_32.c +++ b/sljit/sljitNativeARM_T2_32.c @@ -107,7 +107,11 @@ static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = { #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 @@ -429,6 +433,27 @@ SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compil 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_PRE_UPDATE: + case SLJIT_HAS_CLZ: + case SLJIT_HAS_CMOV: + return 1; + + default: + return 0; + } +} + /* --------------------------------------------------------------------- */ /* Core code generator functions. */ /* --------------------------------------------------------------------- */ @@ -566,9 +591,12 @@ static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, s if (nimm <= 0xfff) return push_inst32(compiler, SUBWI | RD4(dst) | RN4(reg) | IMM12(nimm)); } - imm = get_imm(imm); - if (imm != INVALID_IMM) - return push_inst32(compiler, ADD_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); + 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); @@ -576,6 +604,7 @@ static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, s 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)); @@ -584,6 +613,16 @@ static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, s 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) @@ -596,8 +635,6 @@ static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, s if (nimm <= 0xff) return push_inst16(compiler, ADDSI8 | IMM8(nimm) | RDN3(dst)); } - if (imm <= 0xff && (flags & UNUSED_RETURN)) - return push_inst16(compiler, CMPI | IMM8(imm) | RDN3(reg)); } if (!(flags & SET_FLAGS)) { if (imm <= 0xfff) @@ -605,9 +642,12 @@ static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, s if (nimm <= 0xfff) return push_inst32(compiler, ADDWI | RD4(dst) | RN4(reg) | IMM12(nimm)); } - imm = get_imm(imm); - if (imm != INVALID_IMM) - return push_inst32(compiler, SUB_WI | (flags & SET_FLAGS) | RD4(dst) | RN4(reg) | imm); + 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) @@ -729,11 +769,6 @@ static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, s case SLJIT_CLZ: SLJIT_ASSERT(arg1 == TMP_REG2); FAIL_IF(push_inst32(compiler, CLZ | RN4(arg2) | RD4(dst) | RM4(arg2))); - if (flags & SET_FLAGS) { - if (reg_map[dst] <= 7) - return push_inst16(compiler, CMPI | RDN3(dst)); - return push_inst32(compiler, ADD_WI | SET_FLAGS | RN4(dst) | RD4(dst)); - } return SLJIT_SUCCESS; case SLJIT_ADD: if (IS_3_LO_REGS(dst, arg1, arg2)) @@ -746,6 +781,11 @@ static sljit_s32 emit_op_imm(struct sljit_compiler *compiler, sljit_s32 flags, s 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)); @@ -1407,16 +1447,6 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *c /* 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 -} - #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) @@ -1830,6 +1860,7 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *co 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)); } @@ -1885,6 +1916,54 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *co return SLJIT_SUCCESS; } +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 dst_reg, + sljit_s32 src, sljit_sw srcw) +{ + sljit_uw cc, tmp; + + CHECK_ERROR(); + CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw)); + + dst_reg &= ~SLJIT_I32_OP; + + cc = get_cc(type & 0xff); + + if (!(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 struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value) { struct sljit_const *const_; |