svn commit: r230367 - in head/lib: libc/arm/gen msun/arm

[David Schultz]

Author: das
Date: Fri Jan 20 06:54:30 2012
New Revision: 230367
URL: http://svn.freebsd.org/changeset/base/230367

Log:
  Don't inline fenv.h functions on arm for now.  Inlining makes sense:
  the function bodies require only 2 to 10 instructions.  However, it
  leads to application binaries that refer to a private ABI, namely, the
  softfloat innards in libc.  This could complicate future changes in
  the implementation of the floating-point emulation layer, so it seems
  best to have programs refer to the official fe* entry points in libm.

Modified:
  head/lib/libc/arm/gen/flt_rounds.c
  head/lib/msun/arm/Symbol.map
  head/lib/msun/arm/fenv.c
  head/lib/msun/arm/fenv.h

Modified: head/lib/libc/arm/gen/flt_rounds.c
==============================================================================
--- head/lib/libc/arm/gen/flt_rounds.c	Fri Jan 20 06:51:41 2012	(r230366)
+++ head/lib/libc/arm/gen/flt_rounds.c	Fri Jan 20 06:54:30 2012	(r230367)
@@ -30,6 +30,8 @@ __FBSDID("$FreeBSD$");
 #include <fenv.h>
 #include <float.h>
 
+#include "softfloat-for-gcc.h"
+#include "milieu.h"
 #include "softfloat.h"
 
 int

Modified: head/lib/msun/arm/Symbol.map
==============================================================================
--- head/lib/msun/arm/Symbol.map	Fri Jan 20 06:51:41 2012	(r230366)
+++ head/lib/msun/arm/Symbol.map	Fri Jan 20 06:54:30 2012	(r230367)
@@ -5,8 +5,13 @@ FBSD_1.0 {
 };
 
 FBSD_1.3 {
+	feclearexcept;
+	fegetexceptflag;
 	fesetexceptflag;
 	feraiseexcept;
+	fetestexcept;
+	fegetround;
+	fesetround;
 	fegetenv;
 	feholdexcept;
 	feupdateenv;

Modified: head/lib/msun/arm/fenv.c
==============================================================================
--- head/lib/msun/arm/fenv.c	Fri Jan 20 06:51:41 2012	(r230366)
+++ head/lib/msun/arm/fenv.c	Fri Jan 20 06:54:30 2012	(r230367)
@@ -29,6 +29,20 @@
 #define	__fenv_static
 #include "fenv.h"
 
+/*
+ * The following macros map between the softfloat emulator's flags and
+ * the hardware's FPSR.  The hardware this file was written for doesn't
+ * have rounding control bits, so we stick those in the system ID byte.
+ */
+#define	__set_env(env, flags, mask, rnd) env = ((flags)			\
+						| (mask)<<_FPUSW_SHIFT	\
+						| (rnd) << 24)
+#define	__env_flags(env)		((env) & FE_ALL_EXCEPT)
+#define	__env_mask(env)			(((env) >> _FPUSW_SHIFT)	\
+						& FE_ALL_EXCEPT)
+#define	__env_round(env)		(((env) >> 24) & _ROUND_MASK)
+#include "fenv-softfloat.h"
+
 #ifdef __GNUC_GNU_INLINE__
 #error "This file must be compiled with C99 'inline' semantics"
 #endif

Modified: head/lib/msun/arm/fenv.h
==============================================================================
--- head/lib/msun/arm/fenv.h	Fri Jan 20 06:51:41 2012	(r230366)
+++ head/lib/msun/arm/fenv.h	Fri Jan 20 06:54:30 2012	(r230367)
@@ -65,19 +65,18 @@ extern const fenv_t	__fe_dfl_env;
 #define	_ENABLE_MASK	(FE_ALL_EXCEPT << _FPUSW_SHIFT)
 
 #ifndef	ARM_HARD_FLOAT
-/*
- * The following macros map between the softfloat emulator's flags and
- * the hardware's FPSR.  The hardware this file was written for doesn't
- * have rounding control bits, so we stick those in the system ID byte.
- */
-#define	__set_env(env, flags, mask, rnd) env = ((flags)			\
-						| (mask)<<_FPUSW_SHIFT	\
-						| (rnd) << 24)
-#define	__env_flags(env)		((env) & FE_ALL_EXCEPT)
-#define	__env_mask(env)			(((env) >> _FPUSW_SHIFT)	\
-						& FE_ALL_EXCEPT)
-#define	__env_round(env)		(((env) >> 24) & _ROUND_MASK)
-#include <fenv-softfloat.h>
+
+int feclearexcept(int __excepts);
+int fegetexceptflag(fexcept_t *__flagp, int __excepts);
+int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
+int feraiseexcept(int __excepts);
+int fetestexcept(int __excepts);
+int fegetround(void);
+int fesetround(int __round);
+int fegetenv(fenv_t *__envp);
+int feholdexcept(fenv_t *__envp);
+int fesetenv(const fenv_t *__envp);
+int feupdateenv(const fenv_t *__envp);
 
 #else	/* ARM_HARD_FLOAT */