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Some MMX optimizations.

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This commit is contained in:
OBattler
2023-07-16 03:43:54 +02:00
parent e47e1b62c8
commit 1d59351c03
5 changed files with 11 additions and 6 deletions
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2
src/cpu/CMakeLists.txt
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@@ -14,7 +14,7 @@
#
add_library(cpu OBJECT cpu.c cpu_table.c fpu.c x86.c 808x.c 386.c 386_common.c
386_dynarec.c x86seg.c x87.c x87_timings.c 8080.c)
386_dynarec.c x86_ops_mmx.c x86seg.c x87.c x87_timings.c 8080.c)
if(AMD_K5)
target_compile_definitions(cpu PRIVATE USE_AMD_K5)

1
src/cpu/cpu.c
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@@ -1646,6 +1646,7 @@ cpu_set(void)
cpu_exec = exec386;
else
cpu_exec = execx86;
mmx_init();
gdbstub_cpu_init();
}

5
src/cpu/cpu.h
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@@ -850,4 +850,9 @@ extern void cpu_fast_off_reset(void);
extern void smi_raise(void);
extern void nmi_raise(void);
extern MMX_REG *MMP[8];
extern uint16_t *MMEP[8];
extern void mmx_init(void);
#endif /*EMU_CPU_H*/

7
src/cpu/x86_ops_mmx.h
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@@ -3,12 +3,11 @@
#define USATB(val) (((val) < 0) ? 0 : (((val) > 255) ? 255 : (val)))
#define USATW(val) (((val) < 0) ? 0 : (((val) > 65535) ? 65535 : (val)))
#define MMX_GETREGP(r) fpu_softfloat ? ((MMX_REG *) &fpu_state.st_space[r].fraction) : &(cpu_state.MM[r])
#define MMX_GETREG(r) fpu_softfloat ? (*(MMX_REG *) &fpu_state.st_space[r].fraction) : cpu_state.MM[r]
#define MMX_GETREGP(r) MMP[r]
#define MMX_GETREG(r) *(MMP[r])
#define MMX_SETEXP(r) \
if (fpu_softfloat) \
fpu_state.st_space[r].exp = 0xffff
*(MMEP[r]) = 0xffff
#define MMX_GETSRC() \
if (cpu_mod == 3) { \