diff options
Diffstat (limited to 'MacOSX/386')
| -rw-r--r-- | MacOSX/386/include/fpuctl.h | 76 | ||||
| -rw-r--r-- | MacOSX/386/include/lib9.h | 26 |
2 files changed, 26 insertions, 76 deletions
diff --git a/MacOSX/386/include/fpuctl.h b/MacOSX/386/include/fpuctl.h index 8389f6ee..e69de29b 100644 --- a/MacOSX/386/include/fpuctl.h +++ b/MacOSX/386/include/fpuctl.h @@ -1,76 +0,0 @@ -/* - * Linux 386 fpu support - * Mimic Plan9 floating point support - */ - -static void -setfcr(ulong fcr) -{ - __asm__( "xorb $0x3f, %%al\n\t" - "pushw %%ax\n\t" - "fwait\n\t" - "fldcw (%%esp)\n\t" - "popw %%ax\n\t" - : /* no output */ - : "al" (fcr) - ); -} - -static ulong -getfcr(void) -{ - ulong fcr = 0; - - __asm__( "pushl %%eax\n\t" - "fwait\n\t" - "fstcw (%%esp)\n\t" - "popl %%eax\n\t" - "xorb $0x3f, %%al\n\t" - : "=a" (fcr) - : "eax" (fcr) - ); - return fcr; -} - -static ulong -getfsr(void) -{ - ulong fsr = -1; - - __asm__( "fwait\n\t" - "fstsw (%%eax)\n\t" - "movl (%%eax), %%eax\n\t" - "andl $0xffff, %%eax\n\t" - : "=a" (fsr) - : "eax" (&fsr) - ); - return fsr; -} - -static void -setfsr(ulong fsr) -{ - __asm__("fclex\n\t"); -} - -/* FCR */ -#define FPINEX (1<<5) -#define FPUNFL ((1<<4)|(1<<1)) -#define FPOVFL (1<<3) -#define FPZDIV (1<<2) -#define FPINVAL (1<<0) -#define FPRNR (0<<10) -#define FPRZ (3<<10) -#define FPRPINF (2<<10) -#define FPRNINF (1<<10) -#define FPRMASK (3<<10) -#define FPPEXT (3<<8) -#define FPPSGL (0<<8) -#define FPPDBL (2<<8) -#define FPPMASK (3<<8) -/* FSR */ -#define FPAINEX FPINEX -#define FPAOVFL FPOVFL -#define FPAUNFL FPUNFL -#define FPAZDIV FPZDIV -#define FPAINVAL FPINVAL diff --git a/MacOSX/386/include/lib9.h b/MacOSX/386/include/lib9.h index c138227b..da60ef5b 100644 --- a/MacOSX/386/include/lib9.h +++ b/MacOSX/386/include/lib9.h @@ -487,3 +487,29 @@ extern char *argv0; #define setbinmode() +/* FCR */ +#define FPINEX (1<<5) +#define FPUNFL ((1<<4)|(1<<1)) +#define FPOVFL (1<<3) +#define FPZDIV (1<<2) +#define FPINVAL (1<<0) +#define FPRNR (0<<10) +#define FPRZ (3<<10) +#define FPRPINF (2<<10) +#define FPRNINF (1<<10) +#define FPRMASK (3<<10) +#define FPPEXT (3<<8) +#define FPPSGL (0<<8) +#define FPPDBL (2<<8) +#define FPPMASK (3<<8) +/* FSR */ +#define FPAINEX FPINEX +#define FPAOVFL FPOVFL +#define FPAUNFL FPUNFL +#define FPAZDIV FPZDIV +#define FPAINVAL FPINVAL + +extern void setfcr(ulong); +extern void setfsr(ulong); +extern ulong getfcr(void): +extern ulong getfsr(void); |
