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gcc48/gcc48-bnc1087932.patch
Richard Biener 338fa17f99 - Add gcc48-bnc1087932.patch, backport of -mfix-cortex-a53-843419. 
- Enable --enable-fix-cortex-a53-843419 for aarch64.  [bnc#1087932]

OBS-URL: https://build.opensuse.org/package/show/devel:gcc/gcc48?expand=0&rev=219
2018-04-04 07:48:14 +00:00

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2015-05-12 Yvan Roux <yvan.roux@linaro.org>
Backport from mainline.
2015-05-05 Yvan Roux <yvan.roux@linaro.org>
* config/aarch64/aarch64-elf-raw.h (CA53_ERR_843419_SPEC): Define.
(LINK_SPEC): Include CA53_ERR_843419_SPEC.
* config/aarch64/aarch64-linux.h (CA53_ERR_843419_SPEC): Define.
(LINK_SPEC): Include CA53_ERR_843419_SPEC.
* config/aarch64/aarch64.opt (mfix-cortex-a53-843419): New option.
* configure: Regenerate.
* configure.ac: Add --enable-fix-cortex-a53-843419 option.
* doc/install.texi (aarch64*-*-*): Document new
--enable-fix-cortex-a53-843419 option.
* doc/invoke.texi (AArch64 Options): Document -mfix-cortex-a53-843419
and -mno-fix-cortex-a53-843419 options.
Index: gcc/config/aarch64/aarch64-elf-raw.h
===================================================================
--- gcc/config/aarch64/aarch64-elf-raw.h (revision 235439)
+++ gcc/config/aarch64/aarch64-elf-raw.h (working copy)
@@ -33,9 +33,18 @@
" %{mfix-cortex-a53-835769:--fix-cortex-a53-835769}"
#endif
+#ifdef TARGET_FIX_ERR_A53_843419_DEFAULT
+#define CA53_ERR_843419_SPEC \
+ " %{!mno-fix-cortex-a53-843419:--fix-cortex-a53-843419}"
+#else
+#define CA53_ERR_843419_SPEC \
+ " %{mfix-cortex-a53-843419:--fix-cortex-a53-843419}"
+#endif
+
#ifndef LINK_SPEC
#define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X" \
- CA53_ERR_835769_SPEC
+ CA53_ERR_835769_SPEC \
+ CA53_ERR_843419_SPEC
#endif
#endif /* GCC_AARCH64_ELF_RAW_H */
Index: gcc/config/aarch64/aarch64-linux.h
===================================================================
--- gcc/config/aarch64/aarch64-linux.h (revision 235439)
+++ gcc/config/aarch64/aarch64-linux.h (working copy)
@@ -42,8 +42,17 @@
" %{mfix-cortex-a53-835769:--fix-cortex-a53-835769}"
#endif
+#ifdef TARGET_FIX_ERR_A53_843419_DEFAULT
+#define CA53_ERR_843419_SPEC \
+ " %{!mno-fix-cortex-a53-843419:--fix-cortex-a53-843419}"
+#else
+#define CA53_ERR_843419_SPEC \
+ " %{mfix-cortex-a53-843419:--fix-cortex-a53-843419}"
+#endif
+
#define LINK_SPEC LINUX_TARGET_LINK_SPEC \
- CA53_ERR_835769_SPEC
+ CA53_ERR_835769_SPEC \
+ CA53_ERR_843419_SPEC
#define TARGET_OS_CPP_BUILTINS() \
do \
Index: gcc/config/aarch64/aarch64.opt
===================================================================
--- gcc/config/aarch64/aarch64.opt (revision 235439)
+++ gcc/config/aarch64/aarch64.opt (working copy)
@@ -71,6 +71,10 @@ mfix-cortex-a53-835769
Target Report Var(aarch64_fix_a53_err835769) Init(2)
Workaround for ARM Cortex-A53 Erratum number 835769
+mfix-cortex-a53-843419
+Target Report
+Workaround for ARM Cortex-A53 Erratum number 843419
+
mlittle-endian
Target Report RejectNegative InverseMask(BIG_END)
Assume target CPU is configured as little endian
Index: gcc/configure
===================================================================
--- gcc/configure (revision 235439)
+++ gcc/configure (working copy)
@@ -911,6 +911,7 @@ enable_gnu_indirect_function
enable_initfini_array
enable_comdat
enable_fix_cortex_a53_835769
+enable_fix_cortex_a53_843419
enable_gnu_unique_object
enable_linker_build_id
with_long_double_128
@@ -1628,6 +1629,14 @@ Optional Features:
disable workaround for AArch64 Cortex-A53 erratum
835769 by default
+
+ --enable-fix-cortex-a53-843419
+ enable workaround for AArch64 Cortex-A53 erratum
+ 843419 by default
+ --disable-fix-cortex-a53-843419
+ disable workaround for AArch64 Cortex-A53 erratum
+ 843419 by default
+
--enable-gnu-unique-object
enable the use of the @gnu_unique_object ELF
extension on glibc systems
@@ -17847,7 +17856,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 17850 "configure"
+#line 17859 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -17953,7 +17962,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 17956 "configure"
+#line 17965 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@@ -23822,6 +23831,25 @@ if test "${enable_fix_cortex_a53_835769+
Valid choices are 'yes' and 'no'." "$LINENO" 5
;;
+ esac
+
+fi
+
+ # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
+ # Check whether --enable-fix-cortex-a53-843419 was given.
+if test "${enable_fix_cortex_a53_843419+set}" = set; then :
+ enableval=$enable_fix_cortex_a53_843419;
+ case $enableval in
+ yes)
+ tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
+ ;;
+ no)
+ ;;
+ *)
+ as_fn_error "'$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
+ Valid choices are 'yes' and 'no'." "$LINENO" 5
+ ;;
+
esac
fi
Index: gcc/configure.ac
===================================================================
--- gcc/configure.ac (revision 235439)
+++ gcc/configure.ac (working copy)
@@ -3468,6 +3468,29 @@ AS_HELP_STRING([--disable-fix-cortex-a53
esac
],
[])
+ # Enable default workaround for AArch64 Cortex-A53 erratum 843419.
+ AC_ARG_ENABLE(fix-cortex-a53-843419,
+ [
+AS_HELP_STRING([--enable-fix-cortex-a53-843419],
+ [enable workaround for AArch64 Cortex-A53 erratum 843419 by default])
+AS_HELP_STRING([--disable-fix-cortex-a53-843419],
+ [disable workaround for AArch64 Cortex-A53 erratum 843419 by default])
+ ],
+ [
+ case $enableval in
+ yes)
+ tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1"
+ ;;
+ no)
+ ;;
+ *)
+ AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
+ Valid choices are 'yes' and 'no'.])
+ ;;
+
+ esac
+ ],
+ [])
;;
# All TARGET_ABI_OSF targets.
alpha*-*-linux* | alpha*-*-*bsd*)
Index: gcc/doc/install.texi
===================================================================
--- gcc/doc/install.texi (revision 235439)
+++ gcc/doc/install.texi (working copy)
@@ -3131,13 +3131,24 @@ information have to.
To enable a workaround for the Cortex-A53 erratum number 835769 by default
(for all CPUs regardless of -mcpu option given) at configure time use the
@option{--enable-fix-cortex-a53-835769} option. This will enable the fix by
-default and can be explicitly disabled during during compilation by passing the
+default and can be explicitly disabled during compilation by passing the
@option{-mno-fix-cortex-a53-835769} option. Conversely,
@option{--disable-fix-cortex-a53-835769} will disable the workaround by
default. The workaround is disabled by default if neither of
@option{--enable-fix-cortex-a53-835769} or
@option{--disable-fix-cortex-a53-835769} is given at configure time.
+To enable a workaround for the Cortex-A53 erratum number 843419 by default
+(for all CPUs regardless of -mcpu option given) at configure time use the
+@option{--enable-fix-cortex-a53-843419} option. This workaround is applied at
+link time. Enabling the workaround will cause GCC to pass the relevant option
+to the linker. It can be explicitly disabled during compilation by passing the
+@option{-mno-fix-cortex-a53-843419} option. Conversely,
+@option{--disable-fix-cortex-a53-843419} will disable the workaround by default.
+The workaround is disabled by default if neither of
+@option{--enable-fix-cortex-a53-843419} or
+@option{--disable-fix-cortex-a53-843419} is given at configure time.
+
@heading @anchor{alpha-x-x}alpha*-*-*
This section contains general configuration information for all
Index: gcc/doc/invoke.texi
===================================================================
--- gcc/doc/invoke.texi (revision 235439)
+++ gcc/doc/invoke.texi (working copy)
@@ -476,6 +476,7 @@ Objective-C and Objective-C++ Dialects}.
-momit-leaf-frame-pointer -mno-omit-leaf-frame-pointer @gol
-mtls-dialect=desc -mtls-dialect=traditional @gol
-mfix-cortex-a53-835769 -mno-fix-cortex-a53-835769 @gol
+-mfix-cortex-a53-843419 -mno-fix-cortex-a53-843419 @gol
-march=@var{name} -mcpu=@var{name} -mtune=@var{name}}
@emph{Adapteva Epiphany Options}
@@ -10943,6 +10944,14 @@ Enable or disable the workaround for the
This will involve inserting a NOP instruction between memory instructions and
64-bit integer multiply-accumulate instructions.
+@item -mfix-cortex-a53-843419
+@itemx -mno-fix-cortex-a53-843419
+@opindex mfix-cortex-a53-843419
+@opindex mno-fix-cortex-a53-843419
+Enable or disable the workaround for the ARM Cortex-A53 erratum number 843419.
+This erratum workaround is made at link time and this will only pass the
+corresponding flag to the linker.
+
@item -march=@var{name}
@opindex march
Specify the name of the target architecture, optionally suffixed by one or
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