This is the mail archive of the
libc-ports@sources.redhat.com
mailing list for the libc-ports project.
Ports updates for soft-fp changes
- From: "Joseph S. Myers" <joseph at codesourcery dot com>
- To: libc-ports at sourceware dot org
- Date: Wed, 30 May 2012 21:40:54 +0000 (UTC)
- Subject: Ports updates for soft-fp changes
I've applied this patch to update MIPS and powerpc-nofpu for the addition
of FP_TRAPPING_EXCEPTIONS to soft-fp, and to remove FP_EX_DENORM for
powerpc-nofpu as discussed on libc-alpha. (The MIPS change doesn't matter
for much; the only thing soft-fp gets used for at present is sqrtl, which
can't produce underflow.)
alpha should probably also get a definition of FP_TRAPPING_EXCEPTIONS
(assuming it supports enabling or disabling traps on particular
exceptions, so that the logic about signaling underflow is meaningful
there).
diff --git a/ChangeLog.mips b/ChangeLog.mips
index 7d07aa6..a63f051 100644
--- a/ChangeLog.mips
+++ b/ChangeLog.mips
@@ -1,5 +1,8 @@
2012-05-30 Joseph Myers <joseph@codesourcery.com>
+ * sysdeps/mips/mips64/soft-fp/sfp-machine.h
+ (FP_TRAPPING_EXCEPTIONS): Define.
+
* sysdeps/unix/sysv/linux/mips/Makefile (syscall-list-variants):
Rename to abi-variants.
(syscall-list-includes): Rename to abi-includes.
diff --git a/ChangeLog.powerpc b/ChangeLog.powerpc
index 5e32abd..1f7ac97 100644
--- a/ChangeLog.powerpc
+++ b/ChangeLog.powerpc
@@ -1,3 +1,8 @@
+2012-05-30 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/powerpc/soft-fp/sfp-machine.h (FP_EX_DENORM): Remove.
+ (FP_TRAPPING_EXCEPTIONS): Define.
+
2012-05-21 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libm.abilist
diff --git a/sysdeps/mips/mips64/soft-fp/sfp-machine.h b/sysdeps/mips/mips64/soft-fp/sfp-machine.h
index 9c1ee3b..c81067d 100644
--- a/sysdeps/mips/mips64/soft-fp/sfp-machine.h
+++ b/sysdeps/mips/mips64/soft-fp/sfp-machine.h
@@ -69,6 +69,7 @@ do { \
if (__builtin_expect (_fex, 0)) \
_FPU_SETCW (_fcw | _fex | (_fex << 10)); \
} while (0)
+#define FP_TRAPPING_EXCEPTIONS ((_fcw >> 5) & 0x7c)
#else
#define FP_INIT_ROUNDMODE _fcw = FP_RND_NEAREST
#endif
diff --git a/sysdeps/powerpc/soft-fp/sfp-machine.h b/sysdeps/powerpc/soft-fp/sfp-machine.h
index e7eafe2..8a9afad 100644
--- a/sysdeps/powerpc/soft-fp/sfp-machine.h
+++ b/sysdeps/powerpc/soft-fp/sfp-machine.h
@@ -46,12 +46,12 @@
#define FP_EX_INVALID (1 << (31 - 2))
#define FP_EX_OVERFLOW (1 << (31 - 3))
#define FP_EX_UNDERFLOW (1 << (31 - 4))
-#define FP_EX_DENORM FP_EX_UNDERFLOW
#define FP_EX_DIVZERO (1 << (31 - 5))
#define FP_EX_INEXACT (1 << (31 - 6))
#define FP_HANDLE_EXCEPTIONS __simulate_exceptions (_fex)
#define FP_ROUNDMODE __sim_round_mode
+#define FP_TRAPPING_EXCEPTIONS (~__sim_disabled_exceptions & 0x3e000000)
extern int __sim_exceptions;
libc_hidden_proto (__sim_exceptions);
--
Joseph S. Myers
joseph@codesourcery.com