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| author | Charles Forsyth <charles.forsyth@gmail.com> | 2015-03-24 16:35:00 +0000 |
|---|---|---|
| committer | Charles Forsyth <charles.forsyth@gmail.com> | 2015-03-24 16:35:00 +0000 |
| commit | 1e8781edb296be22fed3bd5588151e465ac5c4ac (patch) | |
| tree | 9c6d1fa0494e3c6f1277e74b1cb7c3d504d027d7 /Linux/386/include/fpuctl.h | |
| parent | 662e797001aeaf4a8acfe46e5c12a52b862ff492 (diff) | |
empty fpuctl.h
Diffstat (limited to 'Linux/386/include/fpuctl.h')
| -rw-r--r-- | Linux/386/include/fpuctl.h | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/Linux/386/include/fpuctl.h b/Linux/386/include/fpuctl.h index 8389f6ee..e69de29b 100644 --- a/Linux/386/include/fpuctl.h +++ b/Linux/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 |
