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Joseph Myers e770bfd997 Fix i386 FP_TRAPPING_EXCEPTIONS. 
The i386 sfp-machine.h defines FP_TRAPPING_EXCEPTIONS in a way that is
always wrong: it treats a set bit as indicating the exception is
trapping, when actually a set bit (both for 387 and SSE floating
point) indicates it is masked, and a clear bit indicates it is
trapping.  This patch fixes this bug.

Bootstrapped with no regressions on x86_64-unknown-linux-gnu.

libgcc:
	* config/i386/sfp-machine.h (FP_TRAPPING_EXCEPTIONS): Treat clear
	bits not set bits as indicating trapping exceptions.

gcc/testsuite:
	* gcc.dg/torture/float128-exact-underflow.c: New test.

From-SVN: r215347
 		2014-09-18 13:00:21 +01:00
..
aarch64 Add crtfastmath for AArch64. 2014-09-09 15:53:01 +00:00
alpha Use -fbuilding-libgcc for more target macros used in libgcc. 2014-09-05 13:03:46 +01:00
arc Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
arm bpabi.c (__gnu_uldivmod_helper): Remove. 2014-06-18 15:44:45 +00:00
avr re PR target/63223 ([avr] Make jumptables work with -Wl,--section-start,.text=) 2014-09-11 08:08:17 +00:00
bfin Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
c6x float128-mul-underflow.c, [...]: New tests. 2014-02-12 23:24:49 +00:00
cr16 Use -fbuilding-libgcc for more target macros used in libgcc. 2014-09-05 13:03:46 +01:00
cris float128-mul-underflow.c, [...]: New tests. 2014-02-12 23:24:49 +00:00
epiphany Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
fr30 Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
frv Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
h8300 Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
i386 Fix i386 FP_TRAPPING_EXCEPTIONS. 2014-09-18 13:00:21 +01:00
ia64 float128-mul-underflow.c, [...]: New tests. 2014-02-12 23:24:49 +00:00
iq2000 Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
libbid Remove LIBGCC2_HAS_?F_MODE target macros. 2014-09-12 13:05:18 +01:00
lm32 float128-mul-underflow.c, [...]: New tests. 2014-02-12 23:24:49 +00:00
m32c Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
m32r Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
m68k Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
mcore Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
mep Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
microblaze Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
mips Use -fbuilding-libgcc for more target macros used in libgcc. 2014-09-05 13:03:46 +01:00
mmix Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
moxie float128-mul-underflow.c, [...]: New tests. 2014-02-12 23:24:49 +00:00
msp430 t-msp430 (HOST_LIBGCC2_CFLAGS): Add -mhwmult=none. 2014-05-22 15:15:36 +00:00
nds32 float128-mul-underflow.c, [...]: New tests. 2014-02-12 23:24:49 +00:00
nios2 Use -fbuilding-libgcc for more target macros used in libgcc. 2014-09-05 13:03:46 +01:00
pa Use -fbuilding-libgcc for more target macros used in libgcc. 2014-09-05 13:03:46 +01:00
pdp11 Append to HOST_LIBGCC2_CFLAGS in libgcc 2011-11-07 17:14:32 +00:00
rl78 Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
rs6000 Use -fbuilding-libgcc for more target macros used in libgcc. 2014-09-05 13:03:46 +01:00
rx Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
s390 s390.c (s390_emit_tpf_eh_return): Pass original return address as second parameter to __tpf_eh_return routine. 2014-07-30 16:26:15 +00:00
score float128-mul-underflow.c, [...]: New tests. 2014-02-12 23:24:49 +00:00
sh Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
sparc Use -fbuilding-libgcc for more target macros used in libgcc. 2014-09-05 13:03:46 +01:00
spu Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
stormy16 Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
tilegx TILE-Gx big endian support. 2014-02-24 15:08:00 +00:00
tilepro Use -fbuilding-libgcc for more target macros used in libgcc. 2014-09-05 13:03:46 +01:00
v850 Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
vax Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
vms Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
xtensa Use -fbuilding-libgcc for more target macros used in libgcc. 2014-09-05 13:03:46 +01:00
darwin-64.c Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
darwin-crt-tm.c Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
darwin-crt3.c Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
gmon-sol2.c gmon-sol2.c: Reindent. 2011-06-01 14:46:24 +00:00
gthr-lynx.h Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
gthr-rtems.h Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
gthr-vxworks.h Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
hardfp.c configure.ac (libgcc_cv_mips_hard_float): New. 2014-02-07 07:46:34 +00:00
libgcc-glibc.ver Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
libgcc-libsystem.ver Move shlib support to toplevel libgcc 2011-11-02 10:49:46 +00:00
no-sfp-machine.h soft-fp: Move to ../libgcc. 2011-08-05 15:13:48 +00:00
no-unwind.h linux.h (MD_UNWIND_SUPPORT): Remove. 2011-06-03 18:30:39 +00:00
t-crtfm Remove obsolete Tru64 UNIX V5.1B support 2012-03-12 15:35:56 +00:00
t-crtstuff-pic Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
t-darwin * config/t-darwin (crt3.0): Remove work-around for fixed PR26840. 2012-07-14 13:50:59 +00:00
t-dfprules dfp-bit.c, dfp-bit.h: Move to ../libgcc. 2011-07-11 14:40:56 +00:00
t-eh-dw2-dip Makefile.in (UNWIND_H): Remove. 2011-08-05 14:37:48 +00:00
t-fdpbit Makefile.in (FPBIT_FUNCS, [...]): Remove. 2011-08-05 14:53:09 +00:00
t-fixedpoint-gnu-prefix Makefile.in (LIBGCC_VER_FIXEDPOINT_GNU_PREFIX): New. 2011-08-01 12:02:45 +00:00
t-fpbit Makefile.in (FPBIT_FUNCS, [...]): Remove. 2011-08-05 14:53:09 +00:00
t-freebsd-thread Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
t-gnu-prefix Makefile.in (LIBGCC_VER_FIXEDPOINT_GNU_PREFIX): New. 2011-08-01 12:02:45 +00:00
t-hardfp configure.ac (libgcc_cv_mips_hard_float): New. 2014-02-07 07:46:34 +00:00
t-hardfp-sfdf configure.ac (libgcc_cv_mips_hard_float): New. 2014-02-07 07:46:34 +00:00
t-libgcc-pic Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
t-libunwind Move libgcc2 to toplevel libgcc 2011-11-02 15:23:48 +00:00
t-libunwind-elf Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
t-linux Move shlib support to toplevel libgcc 2011-11-02 10:49:46 +00:00
t-openbsd-thread Append to HOST_LIBGCC2_CFLAGS in libgcc 2011-11-07 17:14:32 +00:00
t-rtems Consistently use t-rtems in libgcc 2011-11-07 17:12:33 +00:00
t-slibgcc Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
t-slibgcc-darwin Move shlib support to toplevel libgcc 2011-11-02 10:49:46 +00:00
t-slibgcc-elf-ver Move shlib support to toplevel libgcc 2011-11-02 10:49:46 +00:00
t-slibgcc-gld t-slibgcc-darwin: Move to ... 2011-06-01 14:39:17 +00:00
t-slibgcc-gld-nover Move shlib support to toplevel libgcc 2011-11-02 10:49:46 +00:00
t-slibgcc-hpux re PR other/55274 (gcc build hangs on HP-UX 11.11) 2013-04-06 18:22:09 +00:00
t-slibgcc-libgcc Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
t-slibgcc-nolc-override Move shlib support to toplevel libgcc 2011-11-02 10:49:46 +00:00
t-slibgcc-sld Don't build libgcc-unwind.map with --disable-shared (PR libgcc/61097) 2014-05-08 12:11:14 +00:00
t-slibgcc-vms Move shlib support to toplevel libgcc 2011-11-02 10:49:46 +00:00
t-softfp Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
t-softfp-excl soft-fp: Move to ../libgcc. 2011-08-05 15:13:48 +00:00
t-softfp-sfdf soft-fp: Move to ../libgcc. 2011-08-05 15:13:48 +00:00
t-softfp-tf soft-fp: Move to ../libgcc. 2011-08-05 15:13:48 +00:00
t-sol2 Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
t-stack t-stack (LIB2ADD_ST): Set instead of LIB2ADD. 2010-10-01 19:31:49 +00:00
t-tls tls.m4 (GCC_CHECK_CC_TLS): New. 2007-07-06 07:00:46 -07:00
t-vxworks Append to HOST_LIBGCC2_CFLAGS in libgcc 2011-11-07 17:14:32 +00:00
unwind-dw2-fde-darwin.c Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
vxlib-tls.c Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00
vxlib.c Update copyright years in libgcc/ 2014-01-02 22:25:22 +00:00