diff options
| author | Valery Ushakov <uwe@stderr.spb.ru> | 2016-06-01 14:23:27 +0300 |
|---|---|---|
| committer | Valery Ushakov <uwe@stderr.spb.ru> | 2016-06-01 14:23:27 +0300 |
| commit | 49c7e6d3dd79dc7807b70e8f149798f28319957c (patch) | |
| tree | f2843b8c956427908662499b78067eeac55bdc1e /NetBSD/386/include/fpuctl.h | |
| parent | ecdaf43c2cae919113d803376965be93e6b880af (diff) | |
Move fpuctl.h stuff into lib9, like on Linux. Inline asm version is
probably mis-optimized by modern gcc, but I didn't bother investigating.
Diffstat (limited to 'NetBSD/386/include/fpuctl.h')
| -rw-r--r-- | NetBSD/386/include/fpuctl.h | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/NetBSD/386/include/fpuctl.h b/NetBSD/386/include/fpuctl.h index 8389f6ee..e69de29b 100644 --- a/NetBSD/386/include/fpuctl.h +++ b/NetBSD/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 |
