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sh2 drc, make B/W read functions signed (reduces generated code size)

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This commit is contained in:
kub 2019-04-26 18:53:21 +02:00
parent ed7e915078
commit aa4c4cb951
7 changed files with 85 additions and 60 deletions
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22
cpu/drc/emit_x86.c
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@ -397,8 +397,12 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
#define emith_read8_r_r_r_c(cond, r, rs, rm) \
emith_read8_r_r_r(r, rs, rm)
#define emith_read8s_r_r_r_c(cond, r, rs, rm) \
emith_read8s_r_r_r(r, rs, rm)
#define emith_read16_r_r_r_c(cond, r, rs, rm) \
emith_read16_r_r_r(r, rs, rm)
#define emith_read16s_r_r_r_c(cond, r, rs, rm) \
emith_read16s_r_r_r(r, rs, rm)
#define emith_read_r_r_r_c(cond, r, rs, rm) \
emith_read_r_r_r(r, rs, rm)
@ -684,12 +688,24 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
EMIT_SIB(0, rs, rm); /* mov r, [rm + rs * 1] */ \
} while (0)
#define emith_read8s_r_r_r(r, rs, rm) do { \
EMIT(0x0f, u8); \
EMIT_OP_MODRM(0xbe, 0, r, 4); \
EMIT_SIB(0, rs, rm); /* mov r, [rm + rs * 1] */ \
} while (0)
#define emith_read16_r_r_r(r, rs, rm) do { \
EMIT(0x0f, u8); \
EMIT_OP_MODRM(0xb7, 0, r, 4); \
EMIT_SIB(0, rs, rm); /* mov r, [rm + rs * 1] */ \
} while (0)
#define emith_read16s_r_r_r(r, rs, rm) do { \
EMIT(0x0f, u8); \
EMIT_OP_MODRM(0xbf, 0, r, 4); \
EMIT_SIB(0, rs, rm); /* mov r, [rm + rs * 1] */ \
} while (0)
#define emith_read_r_r_r(r, rs, rm) do { \
EMIT_OP_MODRM(0x8b, 0, r, 4); \
EMIT_SIB(0, rs, rm); /* mov r, [rm + rs * 1] */ \
@ -785,9 +801,11 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
EMIT(offs, u32); \
} while (0)
#define emith_push_ret()
#define emith_push_ret() \
emith_push(xSI); /* to align */
#define emith_pop_and_ret() \
emith_pop(xSI); \
emith_ret()
#define EMITH_JMP_START(cond) { \
@ -1080,8 +1098,6 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
/* mh:ml += rn*rm, does saturation if required by S bit. rn, rm must be TEMP */
#define emith_sh2_macw(ml, mh, rn, rm, sr) do { \
emith_sext(rn, rn, 16); \
emith_sext(rm, rm, 16); \
emith_tst_r_imm(sr, S); \
EMITH_SJMP_START(DCOND_EQ); \
/* XXX: MACH should be untouched when S is set? */ \