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| author | H.J. Lu <hjl.tools@gmail.com> | 2015-10-15 13:35:40 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2015-10-15 13:35:40 -0700 |
| commit | 983a33fa7d50aa8bcff1e0f183388c74b1b5e213 (patch) | |
| tree | 9dba17a716a178336e0a7e653f052278ccbd59dd | |
| parent | b7d09f0d63a5d6705b5e275b8e3c855210b173a0 (diff) | |
| download | glibc-983a33fa7d50aa8bcff1e0f183388c74b1b5e213.tar.gz glibc-983a33fa7d50aa8bcff1e0f183388c74b1b5e213.tar.xz glibc-983a33fa7d50aa8bcff1e0f183388c74b1b5e213.zip | |
Add comments for GCC 5 requirement
* sysdeps/unix/sysv/linux/i386/sysdep.h: Add comments for GCC 5 requirement.
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.h | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 77878ded96..6f103e8632 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 5324da6329..76db7b8ab9 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. */ |