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Manually emit LAHF instructions so that 64-bit assemblers can grok it

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gbeauche 2006-02-06 22:55:44 +00:00
parent d475faf4ba
commit 9ccf62f7b0
1 changed files with 19 additions and 12 deletions
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31
BasiliskII/src/uae_cpu/m68k.h
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@ -219,11 +219,18 @@ static __inline__ int cctrue(int cc)
return 0; return 0;
} }
/* Manually emit LAHF instruction so that 64-bit assemblers can grok it */
#if defined __x86_64__ && defined __GNUC__
#define ASM_LAHF ".byte 0x9f"
#else
#define ASM_LAHF "lahf"
#endif
/* Is there any way to do this without declaring *all* memory clobbered? /* Is there any way to do this without declaring *all* memory clobbered?
I.e. any way to tell gcc that some byte-sized value is in %al? */ I.e. any way to tell gcc that some byte-sized value is in %al? */
#define optflag_testl(v) \ #define optflag_testl(v) \
__asm__ __volatile__ ("andl %0,%0\n\t" \ __asm__ __volatile__ ("andl %0,%0\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -231,7 +238,7 @@ static __inline__ int cctrue(int cc)
#define optflag_testw(v) \ #define optflag_testw(v) \
__asm__ __volatile__ ("andw %w0,%w0\n\t" \ __asm__ __volatile__ ("andw %w0,%w0\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -239,7 +246,7 @@ static __inline__ int cctrue(int cc)
#define optflag_testb(v) \ #define optflag_testb(v) \
__asm__ __volatile__ ("andb %b0,%b0\n\t" \ __asm__ __volatile__ ("andb %b0,%b0\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -247,7 +254,7 @@ static __inline__ int cctrue(int cc)
#define optflag_addl(v, s, d) do { \ #define optflag_addl(v, s, d) do { \
__asm__ __volatile__ ("addl %k1,%k0\n\t" \ __asm__ __volatile__ ("addl %k1,%k0\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -257,7 +264,7 @@ static __inline__ int cctrue(int cc)
#define optflag_addw(v, s, d) do { \ #define optflag_addw(v, s, d) do { \
__asm__ __volatile__ ("addw %w1,%w0\n\t" \ __asm__ __volatile__ ("addw %w1,%w0\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -267,7 +274,7 @@ static __inline__ int cctrue(int cc)
#define optflag_addb(v, s, d) do { \ #define optflag_addb(v, s, d) do { \
__asm__ __volatile__ ("addb %b1,%b0\n\t" \ __asm__ __volatile__ ("addb %b1,%b0\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -277,7 +284,7 @@ static __inline__ int cctrue(int cc)
#define optflag_subl(v, s, d) do { \ #define optflag_subl(v, s, d) do { \
__asm__ __volatile__ ("subl %k1,%k0\n\t" \ __asm__ __volatile__ ("subl %k1,%k0\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -287,7 +294,7 @@ static __inline__ int cctrue(int cc)
#define optflag_subw(v, s, d) do { \ #define optflag_subw(v, s, d) do { \
__asm__ __volatile__ ("subw %w1,%w0\n\t" \ __asm__ __volatile__ ("subw %w1,%w0\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -297,7 +304,7 @@ static __inline__ int cctrue(int cc)
#define optflag_subb(v, s, d) do { \ #define optflag_subb(v, s, d) do { \
__asm__ __volatile__ ("subb %b1,%b0\n\t" \ __asm__ __volatile__ ("subb %b1,%b0\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -307,7 +314,7 @@ static __inline__ int cctrue(int cc)
#define optflag_cmpl(s, d) \ #define optflag_cmpl(s, d) \
__asm__ __volatile__ ("cmpl %k0,%k1\n\t" \ __asm__ __volatile__ ("cmpl %k0,%k1\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -315,7 +322,7 @@ static __inline__ int cctrue(int cc)
#define optflag_cmpw(s, d) \ #define optflag_cmpw(s, d) \
__asm__ __volatile__ ("cmpw %w0,%w1\n\t" \ __asm__ __volatile__ ("cmpw %w0,%w1\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \
@ -323,7 +330,7 @@ static __inline__ int cctrue(int cc)
#define optflag_cmpb(s, d) \ #define optflag_cmpb(s, d) \
__asm__ __volatile__ ("cmpb %b0,%b1\n\t" \ __asm__ __volatile__ ("cmpb %b0,%b1\n\t" \
"lahf\n\t" \ ASM_LAHF "\n\t" \
"seto %%al\n\t" \ "seto %%al\n\t" \
"movb %%al,regflags\n\t" \ "movb %%al,regflags\n\t" \
"movb %%ah,regflags+1\n\t" \ "movb %%ah,regflags+1\n\t" \