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* [gcc(refs/users/marxin/heads/PR93274-make-resolver-static-v2)] Emit .note.GNU-stack for hard-float linux targets.
@ 2020-01-27 10:11 Martin Liska
0 siblings, 0 replies; only message in thread
From: Martin Liska @ 2020-01-27 10:11 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:54b3d52c3cca836c7c4c08cc9c02eda6c096372a
commit 54b3d52c3cca836c7c4c08cc9c02eda6c096372a
Author: Dragan Mladjenovic <dragan.mladjenovic@rt-rk.com>
Date: Thu Jan 23 16:37:20 2020 +0100
Emit .note.GNU-stack for hard-float linux targets.
libgcc/ChangeLog:
2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com>
* config/mips/gnustack.h: Check for TARGET_LIBC_GNUSTACK also.
gcc/ChangeLog:
2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com>
* config.in: Regenerated.
* config/mips/linux.h (NEED_INDICATE_EXEC_STACK): Define to 1
for TARGET_LIBC_GNUSTACK.
* configure: Regenerated.
* configure.ac: Define TARGET_LIBC_GNUSTACK if glibc version is
found to be 2.31 or greater.
Diff:
---
gcc/ChangeLog | 9 +++++++++
gcc/config/mips/linux.h | 4 ++++
gcc/configure.ac | 12 ++++++++++++
libgcc/ChangeLog | 4 ++++
libgcc/config/mips/gnustack.h | 2 +-
5 files changed, 30 insertions(+), 1 deletion(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index b8b9b55..840668d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,14 @@
2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com>
+ * config.in: Regenerated.
+ * config/mips/linux.h (NEED_INDICATE_EXEC_STACK): Define to 1
+ for TARGET_LIBC_GNUSTACK.
+ * configure: Regenerated.
+ * configure.ac: Define TARGET_LIBC_GNUSTACK if glibc version is
+ found to be 2.31 or greater.
+
+2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com>
+
* config/mips/linux.h (NEED_INDICATE_EXEC_STACK): Define to
TARGET_SOFT_FLOAT.
* config/mips/mips.c (TARGET_ASM_FILE_END): Define to ...
diff --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
index 183b62f..54446e5 100644
--- a/gcc/config/mips/linux.h
+++ b/gcc/config/mips/linux.h
@@ -53,4 +53,8 @@ along with GCC; see the file COPYING3. If not see
#undef NEED_INDICATE_EXEC_STACK
+#ifdef TARGET_LIBC_GNUSTACK
+#define NEED_INDICATE_EXEC_STACK 1
+#else
#define NEED_INDICATE_EXEC_STACK TARGET_SOFT_FLOAT
+#endif
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 4a1790b..a7521ee 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -6247,6 +6247,18 @@ if test x$gcc_cv_libc_provides_hwcap_in_tcb = xyes; then
[Define if your target C Library provides the AT_HWCAP value in the TCB])
fi
+# Check if the target LIBC handles PT_GNU_STACK.
+gcc_cv_libc_gnustack=unknown
+case "$target" in
+ mips*-*-linux*)
+ GCC_GLIBC_VERSION_GTE_IFELSE([2], [31], [gcc_cv_libc_gnustack=yes], )
+ ;;
+esac
+if test x$gcc_cv_libc_gnustack = xyes; then
+ AC_DEFINE(TARGET_LIBC_GNUSTACK, 1,
+ [Define if your target C Library properly handles PT_GNU_STACK])
+fi
+
AC_MSG_CHECKING(dl_iterate_phdr in target C library)
gcc_cv_target_dl_iterate_phdr=unknown
case "$target" in
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index eddcd9f..bea77b2 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,5 +1,9 @@
2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com>
+ * config/mips/gnustack.h: Check for TARGET_LIBC_GNUSTACK also.
+
+2020-01-23 Dragan Mladjenovic <dmladjenovic@wavecomp.com>
+
* config/mips/gnustack.h: New file.
* config/mips/crti.S: Include gnustack.h.
* config/mips/crtn.S: Likewise.
diff --git a/libgcc/config/mips/gnustack.h b/libgcc/config/mips/gnustack.h
index c7e9fe7..561b348 100644
--- a/libgcc/config/mips/gnustack.h
+++ b/libgcc/config/mips/gnustack.h
@@ -1,6 +1,6 @@
#include "config.h"
#if defined(__ELF__) && defined(__linux__)
-#if defined (__mips_soft_float)
+#if defined (TARGET_LIBC_GNUSTACK) || defined (__mips_soft_float)
.section .note.GNU-stack,"",%progbits
.previous
#endif
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