Remove the error handling wrapper from pow

Introduce new pow symbol version that doesn't do SVID compatible error handling. The standard errno and fp exception based error handling is inline in the new code and does not have significant overhead. The wrapper is disabled for sysdeps/ieee754/dbl-64 by using empty w_pow.c and enabled for targets with their own pow implementation or ifunc dispatch on __ieee754_pow by including math/w_pow.c. The compatibility symbol version still uses the wrapper with SVID error handling around the new code. There is no new symbol version nor compatibility code on !LIBM_SVID_COMPAT targets (e.g. riscv). On targets where previously powl was an alias of pow, now it points to the compatibility symbol with the wrapper, because it still need the SVID compatible error handling. This affects NO_LONG_DOUBLE (e.g. arm) and LONG_DOUBLE_COMPAT (e.g. alpha) targets as well. The __pow_finite symbol is now an alias of pow. Both __pow_finite and pow set errno and thus not const functions. The ia64 asm is changed so the compat and new symbol versions map to the same address. On x86_64 #include <math.h> was added before macro definitions that may affect that header. Tested with build-many-glibcs.py. * math/Versions (GLIBC_2.29): Add pow. * math/w_pow_compat.c (__pow_compat): Change to versioned compat symbol. * math/w_pow.c: New file. * sysdeps/i386/fpu/w_pow.c: New file. * sysdeps/ia64/fpu/e_pow.S: Add versioned symbols. * sysdeps/ieee754/dbl-64/e_pow.c (__ieee754_pow): Rename to __pow and add necessary aliases. * sysdeps/ieee754/dbl-64/w_pow.c: New file. * sysdeps/m68k/m680x0/fpu/w_pow.c: New file. * sysdeps/mach/hurd/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Update. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Update. * sysdeps/unix/sysv/linux/arm/libm.abilist: Update. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Update. * sysdeps/unix/sysv/linux/i386/libm.abilist: Update. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Update. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Update. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Update. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Update. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Update. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Update. * sysdeps/unix/sysv/linux/sh/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Update. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Update. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Update. * sysdeps/x86_64/fpu/multiarch/e_pow-fma.c (__ieee754_pow): Rename to __pow. * sysdeps/x86_64/fpu/multiarch/e_pow-fma4.c (__ieee754_pow): Likewise. * sysdeps/x86_64/fpu/multiarch/e_pow.c (__ieee754_pow): Likewise. * sysdeps/x86_64/fpu/multiarch/w_pow.c: New file.
author: Szabolcs Nagy <szabolcs.nagy@arm.com> 2018-06-27 16:33:16 +0100
committer: Szabolcs Nagy <szabolcs.nagy@arm.com> 2018-11-21 09:58:36 +0000
commit: a502c5294b46109827c970a989ee10d1a9dcb176 (patch)
tree: 44a52823a8cbaf0b9fc6e58ce6ec220e57b9d0d4 /sysdeps/unix/sysv
parent: 718d6542f2c0e4c8ec65453c1df6612768d6ef00 (diff)
download: glibc-a502c5294b46109827c970a989ee10d1a9dcb176.tar.gz
glibc-a502c5294b46109827c970a989ee10d1a9dcb176.tar.xz
glibc-a502c5294b46109827c970a989ee10d1a9dcb176.zip
23 files changed, 23 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/aarch64/libm.abilist b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
index c01ff24dfe..d38ebfb510 100644
--- a/sysdeps/unix/sysv/linux/aarch64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libm.abilist
@@ -1036,3 +1036,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/alpha/libm.abilist b/sysdeps/unix/sysv/linux/alpha/libm.abilist
index f5ec8742dc..1157dcf398 100644
--- a/sysdeps/unix/sysv/linux/alpha/libm.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libm.abilist
@@ -1047,6 +1047,7 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.3.4 __c1_cabsf F
 GLIBC_2.3.4 __c1_cacosf F
 GLIBC_2.3.4 __c1_cacoshf F
diff --git a/sysdeps/unix/sysv/linux/arm/libm.abilist b/sysdeps/unix/sysv/linux/arm/libm.abilist
index 9b7d87b329..547e7bcd9f 100644
--- a/sysdeps/unix/sysv/linux/arm/libm.abilist
+++ b/sysdeps/unix/sysv/linux/arm/libm.abilist
@@ -457,6 +457,7 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 _LIB_VERSION D 0x4
 GLIBC_2.4 __clog10 F
 GLIBC_2.4 __clog10f F
diff --git a/sysdeps/unix/sysv/linux/hppa/libm.abilist b/sysdeps/unix/sysv/linux/hppa/libm.abilist
index d193f99561..4bdd605269 100644
--- a/sysdeps/unix/sysv/linux/hppa/libm.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libm.abilist
@@ -768,4 +768,5 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 exp2l F
diff --git a/sysdeps/unix/sysv/linux/i386/libm.abilist b/sysdeps/unix/sysv/linux/i386/libm.abilist
index eae2c55d38..087e29790e 100644
--- a/sysdeps/unix/sysv/linux/i386/libm.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libm.abilist
@@ -1079,3 +1079,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/ia64/libm.abilist b/sysdeps/unix/sysv/linux/ia64/libm.abilist
index 9796e8d37b..fff5eb17b3 100644
--- a/sysdeps/unix/sysv/linux/ia64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libm.abilist
@@ -1009,3 +1009,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
index 9b7d87b329..547e7bcd9f 100644
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist
@@ -457,6 +457,7 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 _LIB_VERSION D 0x4
 GLIBC_2.4 __clog10 F
 GLIBC_2.4 __clog10f F
diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
index f73ad1a35c..5f422643b1 100644
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist
@@ -808,3 +808,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/microblaze/libm.abilist b/sysdeps/unix/sysv/linux/microblaze/libm.abilist
index dcb7dbba91..bbeeebf776 100644
--- a/sysdeps/unix/sysv/linux/microblaze/libm.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/libm.abilist
@@ -769,3 +769,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
index 1146e2d6fd..93405d1641 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/libm.abilist
@@ -768,4 +768,5 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 exp2l F
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
index d9c830da42..33f67a5d3d 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/libm.abilist
@@ -1036,3 +1036,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/nios2/libm.abilist b/sysdeps/unix/sysv/linux/nios2/libm.abilist
index 0902ca01f2..ecbe596898 100644
--- a/sysdeps/unix/sysv/linux/nios2/libm.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libm.abilist
@@ -769,3 +769,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
index 3e9e5e75fd..a47fca400a 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist
@@ -814,6 +814,7 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
index 7a3c6be1f4..ca7095fe72 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist
@@ -813,6 +813,7 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
index d50c82c7c8..554dcd2623 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist
@@ -1080,3 +1080,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
index cbf2ad3ca6..9c6cf06d13 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist
@@ -492,6 +492,7 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.3 _LIB_VERSION D 0x4
 GLIBC_2.3 __clog10 F
 GLIBC_2.3 __clog10f F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
index 382455c9cf..be5d286bf2 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist
@@ -1037,6 +1037,7 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
index 92b794bf12..512fbc8630 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist
@@ -1037,6 +1037,7 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/sh/libm.abilist b/sysdeps/unix/sysv/linux/sh/libm.abilist
index 3320f1403a..09d97d6f52 100644
--- a/sysdeps/unix/sysv/linux/sh/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sh/libm.abilist
@@ -768,4 +768,5 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 exp2l F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
index 2a10a0ffb9..3240ff6aa3 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist
@@ -1044,6 +1044,7 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
 GLIBC_2.4 __clog10l F
 GLIBC_2.4 __finitel F
 GLIBC_2.4 __fpclassifyl F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
index ebbc58da91..351331beb7 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist
@@ -1036,3 +1036,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
index 3e02619df9..087f4db051 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libm.abilist
@@ -1070,3 +1070,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
index 03cd62fd6f..e9a1cc0d5c 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist
@@ -1070,3 +1070,4 @@ GLIBC_2.29 exp F
 GLIBC_2.29 exp2 F
 GLIBC_2.29 log F
 GLIBC_2.29 log2 F
+GLIBC_2.29 pow F
author	Szabolcs Nagy <szabolcs.nagy@arm.com>	2018-06-27 16:33:16 +0100
committer	Szabolcs Nagy <szabolcs.nagy@arm.com>	2018-11-21 09:58:36 +0000
commit	a502c5294b46109827c970a989ee10d1a9dcb176 (patch)
tree	44a52823a8cbaf0b9fc6e58ce6ec220e57b9d0d4 /sysdeps/unix/sysv
parent	718d6542f2c0e4c8ec65453c1df6612768d6ef00 (diff)
download	glibc-a502c5294b46109827c970a989ee10d1a9dcb176.tar.gz glibc-a502c5294b46109827c970a989ee10d1a9dcb176.tar.xz glibc-a502c5294b46109827c970a989ee10d1a9dcb176.zip