diff options
Diffstat (limited to 'sljit/sljitNativeARM_32.c')
| -rw-r--r-- | sljit/sljitNativeARM_32.c | 117 |
1 files changed, 73 insertions, 44 deletions
diff --git a/sljit/sljitNativeARM_32.c b/sljit/sljitNativeARM_32.c index 7c69960..ac5a50e 100644 --- a/sljit/sljitNativeARM_32.c +++ b/sljit/sljitNativeARM_32.c @@ -82,6 +82,7 @@ static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = { #define BLX 0xe12fff30 #define BX 0xe12fff10 #define CLZ 0xe16f0f10 +#define CMN_DP 0xb #define CMP_DP 0xa #define BKPT 0xe1200070 #define EOR_DP 0x1 @@ -813,6 +814,27 @@ SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compil return code; } +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type) +{ + switch (feature_type) { + case SLJIT_HAS_FPU: +#ifdef SLJIT_IS_FPU_AVAILABLE + return SLJIT_IS_FPU_AVAILABLE; +#else + /* Available by default. */ + return 1; +#endif + + case SLJIT_HAS_PRE_UPDATE: + case SLJIT_HAS_CLZ: + case SLJIT_HAS_CMOV: + return 1; + + default: + return 0; + } +} + /* --------------------------------------------------------------------- */ /* Entry, exit */ /* --------------------------------------------------------------------- */ @@ -969,6 +991,8 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *comp #define INV_IMM 0x02 /* Source and destination is register. */ #define MOVE_REG_CONV 0x04 + /* Unused return value. */ +#define UNUSED_RETURN 0x08 /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */ #define SET_FLAGS (1 << 20) /* dst: reg @@ -1055,12 +1079,13 @@ static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sl SLJIT_ASSERT(!(flags & INV_IMM)); SLJIT_ASSERT(!(src2 & SRC2_IMM)); FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2))); - if (flags & SET_FLAGS) - return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, flags & SET_FLAGS, SLJIT_UNUSED, dst, SRC2_IMM)); return SLJIT_SUCCESS; case SLJIT_ADD: SLJIT_ASSERT(!(flags & INV_IMM)); + if ((flags & (UNUSED_RETURN | SET_FLAGS)) == (UNUSED_RETURN | SET_FLAGS) && !(flags & ARGS_SWAPPED)) + return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMN_DP, SET_FLAGS, + SLJIT_UNUSED, src1, (src2 & SRC2_IMM) ? src2 : RM(src2))); return push_inst(compiler, EMIT_DATA_PROCESS_INS(ADD_DP, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2))); @@ -1071,6 +1096,9 @@ static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sl case SLJIT_SUB: SLJIT_ASSERT(!(flags & INV_IMM)); + if ((flags & (UNUSED_RETURN | SET_FLAGS)) == (UNUSED_RETURN | SET_FLAGS) && !(flags & ARGS_SWAPPED)) + return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, SET_FLAGS, + SLJIT_UNUSED, src1, (src2 & SRC2_IMM) ? src2 : RM(src2))); return push_inst(compiler, EMIT_DATA_PROCESS_INS(!(flags & ARGS_SWAPPED) ? SUB_DP : RSB_DP, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2))); @@ -1296,7 +1324,10 @@ static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg, /* Load integer. */ return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), imm); #else - return emit_imm(compiler, reg, imm); + FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff))); + if (imm <= 0xffff) + return SLJIT_SUCCESS; + return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff)); #endif } @@ -1413,10 +1444,8 @@ static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s3 sljit_s32 flags = HAS_FLAGS(op) ? SET_FLAGS : 0; /* Destination check. */ - if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) { - if (op <= SLJIT_MOVU_P && !(src2 & SLJIT_MEM)) - return SLJIT_SUCCESS; - } + if (SLJIT_UNLIKELY(dst == SLJIT_UNUSED)) + flags |= UNUSED_RETURN; SLJIT_ASSERT(!(inp_flags & ALLOW_INV_IMM) || (inp_flags & ALLOW_IMM)); @@ -1752,43 +1781,6 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *c /* Floating point operators */ /* --------------------------------------------------------------------- */ -#if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) - -/* 0 - no fpu - 1 - vfp */ -static sljit_s32 arm_fpu_type = -1; - -static void init_compiler(void) -{ - if (arm_fpu_type != -1) - return; - - /* TODO: Only the OS can help to determine the correct fpu type. */ - arm_fpu_type = 1; -} - -SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_is_fpu_available(void) -{ -#ifdef SLJIT_IS_FPU_AVAILABLE - return SLJIT_IS_FPU_AVAILABLE; -#else - if (arm_fpu_type == -1) - init_compiler(); - return arm_fpu_type; -#endif -} - -#else - -#define arm_fpu_type 1 - -SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_is_fpu_available(void) -{ - /* Always available. */ - return 1; -} - -#endif #define FPU_LOAD (1 << 20) #define EMIT_FPU_DATA_TRANSFER(inst, add, base, freg, offs) \ @@ -2254,6 +2246,43 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *co return (flags & SLJIT_SET_Z) ? push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG2, SLJIT_UNUSED, RM(dst_reg))) : SLJIT_SUCCESS; } +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_cmov(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 dst_reg, + sljit_s32 src, sljit_sw srcw) +{ + sljit_uw cc, tmp; + + CHECK_ERROR(); + CHECK(check_sljit_emit_cmov(compiler, type, dst_reg, src, srcw)); + + dst_reg &= ~SLJIT_I32_OP; + + cc = get_cc(type & 0xff); + + if (SLJIT_UNLIKELY(src & SLJIT_IMM)) { + tmp = get_imm(srcw); + if (tmp) + return push_inst(compiler, (EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst_reg, SLJIT_UNUSED, tmp) & ~COND_MASK) | cc); + + tmp = get_imm(~srcw); + if (tmp) + return push_inst(compiler, (EMIT_DATA_PROCESS_INS(MVN_DP, 0, dst_reg, SLJIT_UNUSED, tmp) & ~COND_MASK) | cc); + +#if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) + tmp = (sljit_uw) srcw; + FAIL_IF(push_inst(compiler, (MOVW & ~COND_MASK) | cc | RD(dst_reg) | ((tmp << 4) & 0xf0000) | (tmp & 0xfff))); + if (tmp <= 0xffff) + return SLJIT_SUCCESS; + return push_inst(compiler, (MOVT & ~COND_MASK) | cc | RD(dst_reg) | ((tmp >> 12) & 0xf0000) | ((tmp >> 16) & 0xfff)); +#else + FAIL_IF(load_immediate(compiler, TMP_REG1, srcw)); + src = TMP_REG1; +#endif + } + + return push_inst(compiler, (EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst_reg, SLJIT_UNUSED, src) & ~COND_MASK) | cc); +} + 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_; |