diff options
Diffstat (limited to 'sljit/sljitLir.h')
| -rw-r--r-- | sljit/sljitLir.h | 107 |
1 files changed, 64 insertions, 43 deletions
diff --git a/sljit/sljitLir.h b/sljit/sljitLir.h index 6b9832c..8012d71 100644 --- a/sljit/sljitLir.h +++ b/sljit/sljitLir.h @@ -127,9 +127,11 @@ of sljitConfigInternal.h */ #define SLJIT_RETURN_REG SLJIT_TEMPORARY_REG1 -/* x86 prefers temporary registers for special purposes. If other - registers are used such purpose, it costs a little performance - drawback. It doesn't matter for other archs. */ +/* x86 prefers specific registers for special purposes. In case of shift + by register it supports only SLJIT_TEMPORARY_REG3 for shift argument + (which is the src2 argument of sljit_emit_op2). If another register is + used, sljit must exchange data between registers which cause a minor + slowdown. Other architectures has no such limitation. */ #define SLJIT_PREF_SHIFT_REG SLJIT_TEMPORARY_REG3 @@ -370,15 +372,16 @@ SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compi */ /* - IMPORATNT NOTE: memory access MUST be naturally aligned. + IMPORATNT NOTE: memory access MUST be naturally aligned except + SLJIT_UNALIGNED macro is defined and its value is 1. + length | alignment ---------+----------- byte | 1 byte (not aligned) half | 2 byte (real_address & 0x1 == 0) int | 4 byte (real_address & 0x3 == 0) - sljit_w | 4 byte if SLJIT_32BIT_ARCHITECTURE defined - | 8 byte if SLJIT_64BIT_ARCHITECTURE defined - (This is a strict requirement for embedded systems.) + sljit_w | 4 byte if SLJIT_32BIT_ARCHITECTURE is defined and its value is 1 + | 8 byte if SLJIT_64BIT_ARCHITECTURE is defined and its value is 1 Note: different architectures have different addressing limitations Thus sljit may generate several instructions for other addressing modes @@ -450,6 +453,24 @@ SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compi Note: may or may not cause an extra cycle wait it can even decrease the runtime in a few cases. */ #define SLJIT_NOP 1 +/* Flags: may destroy flags + Unsigned multiplication of SLJIT_TEMPORARY_REG1 and SLJIT_TEMPORARY_REG2. + Result goes to SLJIT_TEMPORARY_REG2:SLJIT_TEMPORARY_REG1 (high:low) word */ +#define SLJIT_UMUL 2 +/* Flags: may destroy flags + Signed multiplication of SLJIT_TEMPORARY_REG1 and SLJIT_TEMPORARY_REG2. + Result goes to SLJIT_TEMPORARY_REG2:SLJIT_TEMPORARY_REG1 (high:low) word */ +#define SLJIT_SMUL 3 +/* Flags: I | may destroy flags + Unsigned divide the value in SLJIT_TEMPORARY_REG1 by SLJIT_TEMPORARY_REG2. + Result goes to SLJIT_TEMPORARY_REG1 and remainder goes to SLJIT_TEMPORARY_REG2. + Note: if SLJIT_TEMPORARY_REG2 is equal to 0, the behaviour is undefined. */ +#define SLJIT_UDIV 4 +/* Flags: I | may destroy flags + Signed divide the value in SLJIT_TEMPORARY_REG1 by SLJIT_TEMPORARY_REG2. + Result goes to SLJIT_TEMPORARY_REG1 and remainder goes to SLJIT_TEMPORARY_REG2. + Note: if SLJIT_TEMPORARY_REG2 is equal to 0, the behaviour is undefined. */ +#define SLJIT_SDIV 5 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op); @@ -462,68 +483,68 @@ SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int SH = unsgined half (16 bit) */ /* Flags: - (never set any flags) */ -#define SLJIT_MOV 2 +#define SLJIT_MOV 6 /* Flags: - (never set any flags) */ -#define SLJIT_MOV_UB 3 +#define SLJIT_MOV_UB 7 /* Flags: - (never set any flags) */ -#define SLJIT_MOV_SB 4 +#define SLJIT_MOV_SB 8 /* Flags: - (never set any flags) */ -#define SLJIT_MOV_UH 5 +#define SLJIT_MOV_UH 9 /* Flags: - (never set any flags) */ -#define SLJIT_MOV_SH 6 +#define SLJIT_MOV_SH 10 /* Flags: - (never set any flags) */ -#define SLJIT_MOV_UI 7 +#define SLJIT_MOV_UI 11 /* Flags: - (never set any flags) */ -#define SLJIT_MOV_SI 8 +#define SLJIT_MOV_SI 12 /* Flags: - (never set any flags) */ -#define SLJIT_MOVU 9 +#define SLJIT_MOVU 13 /* Flags: - (never set any flags) */ -#define SLJIT_MOVU_UB 10 +#define SLJIT_MOVU_UB 14 /* Flags: - (never set any flags) */ -#define SLJIT_MOVU_SB 11 +#define SLJIT_MOVU_SB 15 /* Flags: - (never set any flags) */ -#define SLJIT_MOVU_UH 12 +#define SLJIT_MOVU_UH 16 /* Flags: - (never set any flags) */ -#define SLJIT_MOVU_SH 13 +#define SLJIT_MOVU_SH 17 /* Flags: - (never set any flags) */ -#define SLJIT_MOVU_UI 14 +#define SLJIT_MOVU_UI 18 /* Flags: - (never set any flags) */ -#define SLJIT_MOVU_SI 15 +#define SLJIT_MOVU_SI 19 /* Flags: I | E | K */ -#define SLJIT_NOT 16 +#define SLJIT_NOT 20 /* Flags: I | E | O | K */ -#define SLJIT_NEG 17 +#define SLJIT_NEG 21 /* Count leading zeroes Flags: I | E | K */ -#define SLJIT_CLZ 18 +#define SLJIT_CLZ 22 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int src, sljit_w srcw); /* Flags: I | E | O | C | K */ -#define SLJIT_ADD 19 +#define SLJIT_ADD 23 /* Flags: I | C | K */ -#define SLJIT_ADDC 20 +#define SLJIT_ADDC 24 /* Flags: I | E | S | U | O | C | K */ -#define SLJIT_SUB 21 +#define SLJIT_SUB 25 /* Flags: I | C | K */ -#define SLJIT_SUBC 22 +#define SLJIT_SUBC 26 /* Note: integer mul */ /* Flags: I | O (see SLJIT_C_MUL_*) | K */ -#define SLJIT_MUL 23 +#define SLJIT_MUL 27 /* Flags: I | E | K */ -#define SLJIT_AND 24 +#define SLJIT_AND 28 /* Flags: I | E | K */ -#define SLJIT_OR 25 +#define SLJIT_OR 29 /* Flags: I | E | K */ -#define SLJIT_XOR 26 +#define SLJIT_XOR 30 /* Flags: I | E | K */ -#define SLJIT_SHL 27 +#define SLJIT_SHL 31 /* Flags: I | E | K */ -#define SLJIT_LSHR 28 +#define SLJIT_LSHR 32 /* Flags: I | E | K */ -#define SLJIT_ASHR 29 +#define SLJIT_ASHR 33 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op2(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, @@ -560,26 +581,26 @@ SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void); Note: NaN check is always performed. If SLJIT_C_FLOAT_NAN is set, the comparison result is unpredictable. Flags: E | S (see SLJIT_C_FLOAT_*) */ -#define SLJIT_FCMP 30 +#define SLJIT_FCMP 34 /* Flags: - (never set any flags) */ -#define SLJIT_FMOV 31 +#define SLJIT_FMOV 35 /* Flags: - (never set any flags) */ -#define SLJIT_FNEG 32 +#define SLJIT_FNEG 36 /* Flags: - (never set any flags) */ -#define SLJIT_FABS 33 +#define SLJIT_FABS 37 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int src, sljit_w srcw); /* Flags: - (never set any flags) */ -#define SLJIT_FADD 34 +#define SLJIT_FADD 38 /* Flags: - (never set any flags) */ -#define SLJIT_FSUB 35 +#define SLJIT_FSUB 39 /* Flags: - (never set any flags) */ -#define SLJIT_FMUL 36 +#define SLJIT_FMUL 40 /* Flags: - (never set any flags) */ -#define SLJIT_FDIV 37 +#define SLJIT_FDIV 41 SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, |