AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-23 13:30:06 +00:00
Code Issues Packages Projects Releases Wiki Activity
0022e688d0
glibc/sysdeps
History
Joseph Myers 73e28d9c88 soft-fp: Refactor exception handling for comparisons. 
This patch refactors how soft-fp comparisons handle setting exceptions
for NaN operands, so that exceptions are set through the FP_CMP macros
rather than directly in the C files calling them.

The _FP_CMP* and FP_CMP* macros gain an extra argument to specify when
exceptions should be set, 0 for no exception setting (I'm not sure
this is actually needed - at least it's not needed for IEEE operations
in glibc / libgcc, but might be relevant in some cases for kernel
use), 1 for exceptions only for signaling NaNs and 2 for exceptions
for all NaNs.  This argument is handled through _FP_CMP_CHECK_NAN,
newly called by the _FP_CMP* macros when a NaN is encountered.  Calls
to these macros are updated, which eliminates all the existing
checking and exception setting in soft-fp *.c files in glibc.

Tested for powerpc-nofpu.  (The __unord* functions have no code
changes; the __eq* / __ge* / __le* functions get slightly larger, but
I don't think that's significant.)

	* soft-fp/op-common.h (_FP_CMP_CHECK_NAN): New macro.
	(_FP_CMP): Add extra argument EX.  Call _FP_CMP_CHECK_NAN.
	(_FP_CMP_EQ): Likewise.
	(_FP_CMP_UNORD): Likewise.
	* soft-fp/double.h (FP_CMP_D): Add extra argument EX.
	(FP_CMP_EQ_D): Likewise.
	(FP_CMP_UNORD_D): Likewise.
	* soft-fp/extended.h (FP_CMP_E): Likewise.
	(FP_CMP_EQ_E): Likewise.
	(FP_CMP_UNORD_E): Likewise.
	* soft-fp/quad.h (FP_CMP_Q): Likewise.
	(FP_CMP_EQ_Q): Likewise.
	(FP_CMP_UNORD_Q): Likewise.
	* soft-fp/single.h (FP_CMP_S): Likewise.
	(FP_CMP_EQ_S): Likewise.
	(FP_CMP_UNORD_S): Likewise.
	* soft-fp/eqdf2.c (__eqdf2): Update call to FP_CMP_EQ_D.
	* soft-fp/eqsf2.c (__eqsf2): Update call to FP_CMP_EQ_S.
	* soft-fp/eqtf2.c (__eqtf2): Update call to FP_CMP_EQ_Q.
	* soft-fp/gedf2.c (__gedf2): Update call to FP_CMP_D.
	* soft-fp/gesf2.c (__gesf2): Update call to FP_CMP_S.
	* soft-fp/getf2.c (__getf2): Update call to FP_CMP_Q.
	* soft-fp/ledf2.c (__ledf2): Update call to FP_CMP_D.
	* soft-fp/lesf2.c (__lesf2): Update call to FP_CMP_S.
	* soft-fp/letf2.c (__letf2): Update call to FP_CMP_Q.
	* soft-fp/unorddf2.c (__unorddf2): Update call to FP_CMP_UNORD_D.
	* soft-fp/unordsf2.c (__unordsf2): Update call to FP_CMP_UNORD_S.
	* soft-fp/unordtf2.c (__unordtf2): Update call to FP_CMP_UNORD_Q.
	* sysdeps/alpha/soft-fp/ots_cmpe.c (internal_compare): Update call
	to FP_CMP_Q.
	* sysdeps/sparc/sparc32/soft-fp/q_cmp.c (_Q_cmp): Update call to
	FP_CMP_Q.
	* sysdeps/sparc/sparc32/soft-fp/q_cmpe.c (_Q_cmpe): Likewise.
	* sysdeps/sparc/sparc32/soft-fp/q_feq.c (_Q_feq): Update call to
	FP_CMP_EQ_Q.
	* sysdeps/sparc/sparc32/soft-fp/q_fge.c (_Q_fge): Update call to
	FP_CMP_Q.
	* sysdeps/sparc/sparc32/soft-fp/q_fgt.c (_Q_fgt): Likewise.
	* sysdeps/sparc/sparc32/soft-fp/q_fle.c (_Q_fle): Likewise.
	* sysdeps/sparc/sparc32/soft-fp/q_flt.c (_Q_flt): Likewise.
	* sysdeps/sparc/sparc32/soft-fp/q_fne.c (_Q_fne): Update call to
	FP_CMP_EQ_Q.
	* sysdeps/sparc/sparc64/soft-fp/qp_cmp.c (_Qp_cmp): Update call to
	FP_CMP_Q.
	* sysdeps/sparc/sparc64/soft-fp/qp_cmpe.c (_Qp_cmpe): Likewise.
	* sysdeps/sparc/sparc64/soft-fp/qp_feq.c (_Qp_feq): Update call to
	FP_CMP_EQ_Q.
	* sysdeps/sparc/sparc64/soft-fp/qp_fge.c (_Qp_fge): Update call to
	FP_CMP_Q.
	* sysdeps/sparc/sparc64/soft-fp/qp_fgt.c (_Qp_fgt): Likewise.
	* sysdeps/sparc/sparc64/soft-fp/qp_fle.c (_Qp_fle): Likewise.
	* sysdeps/sparc/sparc64/soft-fp/qp_flt.c (_Qp_flt): Likewise.
	* sysdeps/sparc/sparc64/soft-fp/qp_fne.c (_Qp_fne): Update call to
	FP_CMP_EQ_Q.
2014-10-09 01:03:56 +00:00
..
aarch64 Require autoconf 2.69 2014-09-29 07:53:36 -07:00
alpha soft-fp: Refactor exception handling for comparisons. 2014-10-09 01:03:56 +00:00
arm Require autoconf 2.69 2014-09-29 07:53:36 -07:00
generic Add __safe_fatal and use it in __pthread_unwind forwarder fallback. 2014-07-31 14:00:33 -07:00
gnu Add new Linux 3.16 constants to netinet/udp.h. 2014-09-12 12:13:08 +00:00
hppa Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
i386 i386 TLS_INIT_TP might produce bogus asm changing stack pointer [BZ #17319] 2014-08-28 09:53:08 +02:00
ia64 Require autoconf 2.69 2014-09-29 07:53:36 -07:00
ieee754 Fix missing <math_private.h> in ldbl-96 fma 2014-08-04 10:20:20 +02:00
init_array Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
m68k Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
mach Require autoconf 2.69 2014-09-29 07:53:36 -07:00
microblaze Move architecture shlib-versions files to Linux-specific directories. 2014-07-17 14:31:12 +00:00
mips Remove extra whitespace from end of line. 2014-10-01 13:46:51 -07:00
nptl Check value of futex before updating in __lll_timedlock 2014-08-12 12:57:27 +01:00
posix Remove _POSIX_REGEX_VERSION 2014-09-15 10:16:14 +05:30
powerpc PowerPC: memset optimization for POWER8/PPC64 2014-09-10 07:39:46 -04:00
pthread Restore subdir conditional for tst-timer dependency. 2014-07-03 18:52:51 -07:00
s390 Require autoconf 2.69 2014-09-29 07:53:36 -07:00
sh Remove unnecessary uses of NOT_IN_libc 2014-08-21 10:26:46 +05:30
sparc soft-fp: Refactor exception handling for comparisons. 2014-10-09 01:03:56 +00:00
tile tile: fix copyright header blocks in just-committed files 2014-10-06 13:47:02 -04:00
unix Don't use INTUSE with __adjtimex (bug 14132). 2014-10-08 23:19:32 +00:00
wordsize-32 Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
wordsize-64 Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
x86 Run tst-ld-sse-use.sh with bash. 2014-09-29 23:24:37 +00:00
x86_64 Remove unnecessary uses of NOT_IN_libc 2014-08-21 10:26:46 +05:30