aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorH.J. Lu <hjl.tools@gmail.com>2015-10-15 13:35:40 -0700
committerH.J. Lu <hjl.tools@gmail.com>2015-10-15 13:35:40 -0700
commit983a33fa7d50aa8bcff1e0f183388c74b1b5e213 (patch)
tree9dba17a716a178336e0a7e653f052278ccbd59dd
parentb7d09f0d63a5d6705b5e275b8e3c855210b173a0 (diff)
downloadglibc-983a33fa7d50aa8bcff1e0f183388c74b1b5e213.zip
glibc-983a33fa7d50aa8bcff1e0f183388c74b1b5e213.tar.gz
glibc-983a33fa7d50aa8bcff1e0f183388c74b1b5e213.tar.bz2
Add comments for GCC 5 requirement
* sysdeps/unix/sysv/linux/i386/sysdep.h: Add comments for GCC 5 requirement.
-rw-r--r--ChangeLog5
-rw-r--r--sysdeps/unix/sysv/linux/i386/sysdep.h4
2 files changed, 9 insertions, 0 deletions
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. */