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authorRichard Henderson <rth@twiddle.net>2012-03-09 12:51:27 -0800
committerRichard Henderson <rth@twiddle.net>2012-03-19 06:48:27 -0700
commitb4dabbb47a174e1075b5b93f29093319eab69f2c (patch)
tree8c9e9862826f3701c0095a316e4b6313ec2ba2e5 /sysdeps/x86_64/fpu
parent4851a949b4cd1f280b56a728c784aaa85e51124c (diff)
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Convert libc_feholdexcept et al from macros to inline functions.
Diffstat (limited to 'sysdeps/x86_64/fpu')
-rw-r--r--sysdeps/x86_64/fpu/math_private.h114
1 files changed, 57 insertions, 57 deletions
diff --git a/sysdeps/x86_64/fpu/math_private.h b/sysdeps/x86_64/fpu/math_private.h
index dae9ccca68..8b1fe70d2c 100644
--- a/sysdeps/x86_64/fpu/math_private.h
+++ b/sysdeps/x86_64/fpu/math_private.h
@@ -1,6 +1,8 @@
#ifndef X86_64_MATH_PRIVATE_H
#define X86_64_MATH_PRIVATE_H 1
+#include <fenv.h>
+
#define math_opt_barrier(x) \
({ __typeof(x) __x; \
if (sizeof (x) <= sizeof (double)) \
@@ -62,6 +64,61 @@
f = f__; \
} while (0)
+/* Specialized variants of the <fenv.h> interfaces which only handle
+ either the FPU or the SSE unit. */
+static __always_inline void
+libc_feholdexcept (fenv_t *e)
+{
+ unsigned int mxcsr;
+ asm (STMXCSR " %0" : "=m" (*&mxcsr));
+ e->__mxcsr = mxcsr;
+ mxcsr = (mxcsr | 0x1f80) & ~0x3f;
+ asm volatile (LDMXCSR " %0" : : "m" (*&mxcsr));
+}
+#define libc_feholdexcept libc_feholdexcept
+#define libc_feholdexceptf libc_feholdexcept
+
+static __always_inline void
+libc_feholdexcept_setround (fenv_t *e, int r)
+{
+ unsigned int mxcsr;
+ asm (STMXCSR " %0" : "=m" (*&mxcsr));
+ e->__mxcsr = mxcsr;
+ mxcsr = ((mxcsr | 0x1f80) & ~0x603f) | (r << 3);
+ asm volatile (LDMXCSR " %0" : : "m" (*&mxcsr));
+}
+#define libc_feholdexcept_setround libc_feholdexcept_setround
+#define libc_feholdexcept_setroundf libc_feholdexcept_setround
+
+static __always_inline int
+libc_fetestexcept (int e)
+{
+ unsigned int mxcsr;
+ asm volatile (STMXCSR " %0" : "=m" (*&mxcsr));
+ return mxcsr & e & FE_ALL_EXCEPT;
+}
+#define libc_fetestexcept libc_fetestexcept
+#define libc_fetestexceptf libc_fetestexcept
+
+static __always_inline void
+libc_fesetenv (fenv_t *e)
+{
+ asm volatile (LDMXCSR " %0" : : "m" (e->__mxcsr));
+}
+#define libc_fesetenv libc_fesetenv
+#define libc_fesetenvf libc_fesetenv
+
+static __always_inline void
+libc_feupdateenv (fenv_t *e)
+{
+ unsigned int mxcsr;
+ asm volatile (STMXCSR " %0" : "=m" (*&mxcsr));
+ asm volatile (LDMXCSR " %0" : : "m" ((e)->__mxcsr));
+ __feraiseexcept (mxcsr & FE_ALL_EXCEPT);
+}
+#define libc_feupdateenv libc_feupdateenv
+#define libc_feupdateenvf libc_feupdateenv
+
#include_next <math_private.h>
extern __always_inline double
@@ -146,61 +203,4 @@ __floorf (float d)
}
#endif /* __SSE4_1__ */
-
-/* Specialized variants of the <fenv.h> interfaces which only handle
- either the FPU or the SSE unit. */
-#undef libc_feholdexcept
-#define libc_feholdexcept(e) \
- do { \
- unsigned int mxcsr; \
- asm (STMXCSR " %0" : "=m" (*&mxcsr)); \
- (e)->__mxcsr = mxcsr; \
- mxcsr = (mxcsr | 0x1f80) & ~0x3f; \
- asm volatile (LDMXCSR " %0" : : "m" (*&mxcsr)); \
- } while (0)
-#undef libc_feholdexceptf
-#define libc_feholdexceptf(e) libc_feholdexcept (e)
-// #define libc_feholdexceptl(e) (void) feholdexcept (e)
-
-#undef libc_feholdexcept_setround
-#define libc_feholdexcept_setround(e, r) \
- do { \
- unsigned int mxcsr; \
- asm (STMXCSR " %0" : "=m" (*&mxcsr)); \
- (e)->__mxcsr = mxcsr; \
- mxcsr = ((mxcsr | 0x1f80) & ~0x603f) | ((r) << 3); \
- asm volatile (LDMXCSR " %0" : : "m" (*&mxcsr)); \
- } while (0)
-#undef libc_feholdexcept_setroundf
-#define libc_feholdexcept_setroundf(e, r) libc_feholdexcept_setround (e, r)
-// #define libc_feholdexcept_setroundl(e, r) ...
-
-#undef libc_fetestexcept
-#define libc_fetestexcept(e) \
- ({ unsigned int mxcsr; \
- asm volatile (STMXCSR " %0" : "=m" (*&mxcsr)); \
- mxcsr & (e) & FE_ALL_EXCEPT; })
-#undef libc_fetestexceptf
-#define libc_fetestexceptf(e) libc_fetestexcept (e)
-// #define libc_fetestexceptl(e) fetestexcept (e)
-
-#undef libc_fesetenv
-#define libc_fesetenv(e) \
- asm volatile (LDMXCSR " %0" : : "m" ((e)->__mxcsr))
-#undef libc_fesetenvf
-#define libc_fesetenvf(e) libc_fesetenv (e)
-// #define libc_fesetenvl(e) (void) fesetenv (e)
-
-#undef libc_feupdateenv
-#define libc_feupdateenv(e) \
- do { \
- unsigned int mxcsr; \
- asm volatile (STMXCSR " %0" : "=m" (*&mxcsr)); \
- asm volatile (LDMXCSR " %0" : : "m" ((e)->__mxcsr)); \
- __feraiseexcept (mxcsr & FE_ALL_EXCEPT); \
- } while (0)
-#undef libc_feupdateenvf
-#define libc_feupdateenvf(e) libc_feupdateenv (e)
-// #define libc_feupdateenvl(e) (void) feupdateenv (e)
-
#endif /* X86_64_MATH_PRIVATE_H */