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GNU C Library master sources branch master updated. glibc-2.22-391-g983a33f
- From: hjl at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 15 Oct 2015 20:36:13 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.22-391-g983a33f
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=983a33fa7d50aa8bcff1e0f183388c74b1b5e213
commit 983a33fa7d50aa8bcff1e0f183388c74b1b5e213
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Oct 15 13:35:40 2015 -0700
Add comments for GCC 5 requirement
* sysdeps/unix/sysv/linux/i386/sysdep.h: Add comments for
GCC 5 requirement.
diff --git a/ChangeLog b/ChangeLog
index 77878de..6f103e8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2015-10-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ * sysdeps/unix/sysv/linux/i386/sysdep.h: Add comments for
+ GCC 5 requirement.
+
2015-10-15 Joseph Myers <joseph@codesourcery.com>
* sysdeps/i386/configure.ac (libc_cv_as_i686): Remove configure
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index 5324da6..76db7b8 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -227,6 +227,10 @@
extern int __syscall_error (int)
attribute_hidden __attribute__ ((__regparm__ (1)));
+/* Since GCC 5 and above can properly spill %ebx with PIC when needed,
+ we can inline syscalls with 6 arguments if GCC 5 or above is used
+ to compile glibc. */
+
#if !__GNUC_PREREQ (5,0)
/* We need some help from the assembler to generate optimal code. We
define some macros here which later will be used. */
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
sysdeps/unix/sysv/linux/i386/sysdep.h | 4 ++++
2 files changed, 9 insertions(+), 0 deletions(-)
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