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authorH.J. Lu <hongjiu.lu@intel.com>2016-02-18 11:00:33 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2016-02-18 14:55:29 -0200
commit16396c41deab45f715ffd813280d9d685b3b281e (patch)
tree5ed0830f0b3524559d6a099c3a19af14223ef28a /include
parent6400ae6ecf6376af230d3ec82a8541848d3239e9 (diff)
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Add _STRING_INLINE_unaligned and string_private.h
As discussed in https://sourceware.org/ml/libc-alpha/2015-10/msg00403.html the setting of _STRING_ARCH_unaligned currently controls the external GLIBC ABI as well as selecting the use of unaligned accesses withing GLIBC. Since _STRING_ARCH_unaligned was recently changed for AArch64, this would potentially break the ABI in GLIBC 2.23, so split the uses and add _STRING_INLINE_unaligned to select the string ABI. This setting must be fixed for each target, while _STRING_ARCH_unaligned may be changed from release to release. _STRING_ARCH_unaligned is used unconditionally in glibc. But <bits/string.h>, which defines _STRING_ARCH_unaligned, isn't included with -Os. Since _STRING_ARCH_unaligned is internal to glibc and may change between glibc releases, it should be made private to glibc. _STRING_ARCH_unaligned should defined in the new string_private.h heade file which is included unconditionally from internal <string.h> for glibc build. [BZ #19462] * bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This. * include/string.h: Include <string_private.h>. * string/bits/string2.h: Replace _STRING_ARCH_unaligned with _STRING_INLINE_unaligned. * sysdeps/aarch64/bits/string.h (_STRING_ARCH_unaligned): Removed. (_STRING_INLINE_unaligned): New. * sysdeps/aarch64/string_private.h: New file. * sysdeps/generic/string_private.h: Likewise. * sysdeps/m68k/m680x0/m68020/string_private.h: Likewise. * sysdeps/s390/string_private.h: Likewise. * sysdeps/x86/string_private.h: Likewise. * sysdeps/m68k/m680x0/m68020/bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This. * sysdeps/s390/bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This. * sysdeps/sparc/bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This. * sysdeps/x86/bits/string.h (_STRING_ARCH_unaligned): Renamed to ... (_STRING_INLINE_unaligned): This.
Diffstat (limited to 'include')
-rw-r--r--include/string.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/string.h b/include/string.h
index a684fd9..e145bfd 100644
--- a/include/string.h
+++ b/include/string.h
@@ -46,6 +46,9 @@ extern int __ffs (int __i) __attribute__ ((const));
extern char *__strerror_r (int __errnum, char *__buf, size_t __buflen);
#endif
+/* Get _STRING_ARCH_unaligned. */
+#include <string_private.h>
+
/* Now the real definitions. We do this here since some of the functions
above are defined as macros in the headers. */
#include <string/string.h>