Page MenuHomeFreeBSD

D26292.diff
No OneTemporary

D26292.diff

diff --git a/sys/amd64/include/ieeefp.h b/sys/amd64/include/ieeefp.h
--- a/sys/amd64/include/ieeefp.h
+++ b/sys/amd64/include/ieeefp.h
@@ -40,61 +40,14 @@
#ifndef _MACHINE_IEEEFP_H_
#define _MACHINE_IEEEFP_H_
-/*
- * Deprecated historical FPU control interface
- *
- * IEEE floating point type, constant and function definitions.
- * XXX: {FP,SSE}*FLD and {FP,SSE}*OFF are undocumented pollution.
- */
-
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
-/*
- * Rounding modes.
- */
-typedef enum {
- FP_RN=0, /* round to nearest */
- FP_RM, /* round down towards minus infinity */
- FP_RP, /* round up towards plus infinity */
- FP_RZ /* truncate */
-} fp_rnd_t;
+/* Deprecated historical FPU control interface */
-/*
- * Precision (i.e., rounding precision) modes.
- */
-typedef enum {
- FP_PS=0, /* 24 bit (single-precision) */
- FP_PRS, /* reserved */
- FP_PD, /* 53 bit (double-precision) */
- FP_PE /* 64 bit (extended-precision) */
-} fp_prec_t;
-
-#define fp_except_t int
-
-/*
- * Exception bit masks.
- */
-#define FP_X_INV 0x01 /* invalid operation */
-#define FP_X_DNML 0x02 /* denormal */
-#define FP_X_DZ 0x04 /* zero divide */
-#define FP_X_OFL 0x08 /* overflow */
-#define FP_X_UFL 0x10 /* underflow */
-#define FP_X_IMP 0x20 /* (im)precision */
-#define FP_X_STK 0x40 /* stack fault */
-
-/*
- * FPU control word bit-field masks.
- */
-#define FP_MSKS_FLD 0x3f /* exception masks field */
-#define FP_PRC_FLD 0x300 /* precision control field */
-#define FP_RND_FLD 0xc00 /* rounding control field */
+#include <x86/x86_ieeefp.h>
/*
- * FPU status word bit-field masks.
+ * IEEE floating point type, constant and function definitions.
+ * XXX: {FP,SSE}*FLD and {FP,SSE}*OFF are undocumented pollution.
*/
-#define FP_STKY_FLD 0x3f /* sticky flags field */
/*
* SSE mxcsr register bit-field masks.
@@ -105,18 +58,6 @@
#define SSE_RND_FLD 0x6000 /* rounding control */
#define SSE_FZ_FLD 0x8000 /* flush to zero on underflow */
-/*
- * FPU control word bit-field offsets (shift counts).
- */
-#define FP_MSKS_OFF 0 /* exception masks offset */
-#define FP_PRC_OFF 8 /* precision control offset */
-#define FP_RND_OFF 10 /* rounding control offset */
-
-/*
- * FPU status word bit-field offsets (shift counts).
- */
-#define FP_STKY_OFF 0 /* sticky flags offset */
-
/*
* SSE mxcsr register bit-field offsets (shift counts).
*/
@@ -128,43 +69,6 @@
#ifdef __GNUCLIKE_ASM
-#define __fldcw(addr) __asm __volatile("fldcw %0" : : "m" (*(addr)))
-#define __fldenv(addr) __asm __volatile("fldenv %0" : : "m" (*(addr)))
-#define __fnclex() __asm __volatile("fnclex")
-#define __fnstcw(addr) __asm __volatile("fnstcw %0" : "=m" (*(addr)))
-#define __fnstenv(addr) __asm __volatile("fnstenv %0" : "=m" (*(addr)))
-#define __fnstsw(addr) __asm __volatile("fnstsw %0" : "=m" (*(addr)))
-#define __ldmxcsr(addr) __asm __volatile("ldmxcsr %0" : : "m" (*(addr)))
-#define __stmxcsr(addr) __asm __volatile("stmxcsr %0" : "=m" (*(addr)))
-
-/*
- * Load the control word. Be careful not to trap if there is a currently
- * unmasked exception (ones that will become freshly unmasked are not a
- * problem). This case must be handled by a save/restore of the
- * environment or even of the full x87 state. Accessing the environment
- * is very inefficient, so only do it when necessary.
- */
-static __inline void
-__fnldcw(unsigned short _cw, unsigned short _newcw)
-{
- struct {
- unsigned _cw;
- unsigned _other[6];
- } _env;
- unsigned short _sw;
-
- if ((_cw & FP_MSKS_FLD) != FP_MSKS_FLD) {
- __fnstsw(&_sw);
- if (((_sw & ~_cw) & FP_STKY_FLD) != 0) {
- __fnstenv(&_env);
- _env._cw = _newcw;
- __fldenv(&_env);
- return;
- }
- }
- __fldcw(&_newcw);
-}
-
/*
* General notes about conflicting SSE vs FP status bits.
* This code assumes that software will not fiddle with the control
diff --git a/sys/i386/include/ieeefp.h b/sys/i386/include/ieeefp.h
--- a/sys/i386/include/ieeefp.h
+++ b/sys/i386/include/ieeefp.h
@@ -40,113 +40,12 @@
#ifndef _MACHINE_IEEEFP_H_
#define _MACHINE_IEEEFP_H_
-/*
- * Deprecated historical FPU control interface
- *
- * IEEE floating point type, constant and function definitions.
- * XXX: FP*FLD and FP*OFF are undocumented pollution.
- */
-
-#ifndef _SYS_CDEFS_H_
-#error this file needs sys/cdefs.h as a prerequisite
-#endif
-
-/*
- * Rounding modes.
- */
-typedef enum {
- FP_RN=0, /* round to nearest */
- FP_RM, /* round down towards minus infinity */
- FP_RP, /* round up towards plus infinity */
- FP_RZ /* truncate */
-} fp_rnd_t;
-
-/*
- * Precision (i.e., rounding precision) modes.
- */
-typedef enum {
- FP_PS=0, /* 24 bit (single-precision) */
- FP_PRS, /* reserved */
- FP_PD, /* 53 bit (double-precision) */
- FP_PE /* 64 bit (extended-precision) */
-} fp_prec_t;
+/* Deprecated historical FPU control interface */
-#define fp_except_t int
-
-/*
- * Exception bit masks.
- */
-#define FP_X_INV 0x01 /* invalid operation */
-#define FP_X_DNML 0x02 /* denormal */
-#define FP_X_DZ 0x04 /* zero divide */
-#define FP_X_OFL 0x08 /* overflow */
-#define FP_X_UFL 0x10 /* underflow */
-#define FP_X_IMP 0x20 /* (im)precision */
-#define FP_X_STK 0x40 /* stack fault */
-
-/*
- * FPU control word bit-field masks.
- */
-#define FP_MSKS_FLD 0x3f /* exception masks field */
-#define FP_PRC_FLD 0x300 /* precision control field */
-#define FP_RND_FLD 0xc00 /* rounding control field */
-
-/*
- * FPU status word bit-field masks.
- */
-#define FP_STKY_FLD 0x3f /* sticky flags field */
-
-/*
- * FPU control word bit-field offsets (shift counts).
- */
-#define FP_MSKS_OFF 0 /* exception masks offset */
-#define FP_PRC_OFF 8 /* precision control offset */
-#define FP_RND_OFF 10 /* rounding control offset */
-
-/*
- * FPU status word bit-field offsets (shift counts).
- */
-#define FP_STKY_OFF 0 /* sticky flags offset */
+#include <x86/x86_ieeefp.h>
#ifdef __GNUCLIKE_ASM
-#define __fldcw(addr) __asm __volatile("fldcw %0" : : "m" (*(addr)))
-#define __fldenv(addr) __asm __volatile("fldenv %0" : : "m" (*(addr)))
-#define __fnclex() __asm __volatile("fnclex")
-#define __fnstcw(addr) __asm __volatile("fnstcw %0" : "=m" (*(addr)))
-#define __fnstenv(addr) __asm __volatile("fnstenv %0" : "=m" (*(addr)))
-#define __fnstsw(addr) __asm __volatile("fnstsw %0" : "=m" (*(addr)))
-#define __ldmxcsr(addr) __asm __volatile("ldmxcsr %0" : : "m" (*(addr)))
-#define __stmxcsr(addr) __asm __volatile("stmxcsr %0" : "=m" (*(addr)))
-
-/*
- * Load the control word. Be careful not to trap if there is a currently
- * unmasked exception (ones that will become freshly unmasked are not a
- * problem). This case must be handled by a save/restore of the
- * environment or even of the full x87 state. Accessing the environment
- * is very inefficient, so only do it when necessary.
- */
-static __inline void
-__fnldcw(unsigned short _cw, unsigned short _newcw)
-{
- struct {
- unsigned _cw;
- unsigned _other[6];
- } _env;
- unsigned short _sw;
-
- if ((_cw & FP_MSKS_FLD) != FP_MSKS_FLD) {
- __fnstsw(&_sw);
- if (((_sw & ~_cw) & FP_STKY_FLD) != 0) {
- __fnstenv(&_env);
- _env._cw = _newcw;
- __fldenv(&_env);
- return;
- }
- }
- __fldcw(&_newcw);
-}
-
static __inline fp_rnd_t
fpgetround(void)
{
diff --git a/sys/i386/include/ieeefp.h b/sys/x86/include/x86_ieeefp.h
copy from sys/i386/include/ieeefp.h
copy to sys/x86/include/x86_ieeefp.h
--- a/sys/i386/include/ieeefp.h
+++ b/sys/x86/include/x86_ieeefp.h
@@ -37,14 +37,14 @@
* $FreeBSD$
*/
-#ifndef _MACHINE_IEEEFP_H_
-#define _MACHINE_IEEEFP_H_
+#ifndef _X86_X86_IEEEFP_H_
+#define _X86_X86_IEEEFP_H_
+
+/* Deprecated historical FPU control interface */
/*
- * Deprecated historical FPU control interface
- *
* IEEE floating point type, constant and function definitions.
- * XXX: FP*FLD and FP*OFF are undocumented pollution.
+ * XXX: {FP,SSE}*FLD and {FP,SSE}*OFF are undocumented pollution.
*/
#ifndef _SYS_CDEFS_H_
@@ -147,116 +147,6 @@
__fldcw(&_newcw);
}
-static __inline fp_rnd_t
-fpgetround(void)
-{
- unsigned short _cw;
-
- __fnstcw(&_cw);
- return ((fp_rnd_t)((_cw & FP_RND_FLD) >> FP_RND_OFF));
-}
-
-static __inline fp_rnd_t
-fpsetround(fp_rnd_t _m)
-{
- fp_rnd_t _p;
- unsigned short _cw, _newcw;
-
- __fnstcw(&_cw);
- _p = (fp_rnd_t)((_cw & FP_RND_FLD) >> FP_RND_OFF);
- _newcw = _cw & ~FP_RND_FLD;
- _newcw |= (_m << FP_RND_OFF) & FP_RND_FLD;
- __fnldcw(_cw, _newcw);
- return (_p);
-}
-
-static __inline fp_prec_t
-fpgetprec(void)
-{
- unsigned short _cw;
-
- __fnstcw(&_cw);
- return ((fp_prec_t)((_cw & FP_PRC_FLD) >> FP_PRC_OFF));
-}
-
-static __inline fp_prec_t
-fpsetprec(fp_prec_t _m)
-{
- fp_prec_t _p;
- unsigned short _cw, _newcw;
-
- __fnstcw(&_cw);
- _p = (fp_prec_t)((_cw & FP_PRC_FLD) >> FP_PRC_OFF);
- _newcw = _cw & ~FP_PRC_FLD;
- _newcw |= (_m << FP_PRC_OFF) & FP_PRC_FLD;
- __fnldcw(_cw, _newcw);
- return (_p);
-}
-
-/*
- * Get or set the exception mask.
- * Note that the x87 mask bits are inverted by the API -- a mask bit of 1
- * means disable for x87 and SSE, but for fp*mask() it means enable.
- */
-
-static __inline fp_except_t
-fpgetmask(void)
-{
- unsigned short _cw;
-
- __fnstcw(&_cw);
- return ((~_cw & FP_MSKS_FLD) >> FP_MSKS_OFF);
-}
-
-static __inline fp_except_t
-fpsetmask(fp_except_t _m)
-{
- fp_except_t _p;
- unsigned short _cw, _newcw;
-
- __fnstcw(&_cw);
- _p = (~_cw & FP_MSKS_FLD) >> FP_MSKS_OFF;
- _newcw = _cw & ~FP_MSKS_FLD;
- _newcw |= (~_m << FP_MSKS_OFF) & FP_MSKS_FLD;
- __fnldcw(_cw, _newcw);
- return (_p);
-}
-
-static __inline fp_except_t
-fpgetsticky(void)
-{
- unsigned _ex;
- unsigned short _sw;
-
- __fnstsw(&_sw);
- _ex = (_sw & FP_STKY_FLD) >> FP_STKY_OFF;
- return ((fp_except_t)_ex);
-}
-
-static __inline fp_except_t
-fpresetsticky(fp_except_t _m)
-{
- struct {
- unsigned _cw;
- unsigned _sw;
- unsigned _other[5];
- } _env;
- fp_except_t _p;
-
- _m &= FP_STKY_FLD >> FP_STKY_OFF;
- _p = fpgetsticky();
- if ((_p & ~_m) == _p)
- return (_p);
- if ((_p & ~_m) == 0) {
- __fnclex();
- return (_p);
- }
- __fnstenv(&_env);
- _env._sw &= ~_m;
- __fldenv(&_env);
- return (_p);
-}
-
#endif /* __GNUCLIKE_ASM */
-#endif /* !_MACHINE_IEEEFP_H_ */
+#endif/* _X86_X86_IEEEFP_H_ */

File Metadata

Mime Type
text/plain
Expires
Mon, Nov 18, 10:57 PM (21 h, 36 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
14706132
Default Alt Text
D26292.diff (9 KB)

Event Timeline