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authorJoseph Myers <joseph@codesourcery.com>2012-06-14 15:18:27 +0000
committerJoseph Myers <joseph@codesourcery.com>2012-06-14 15:18:27 +0000
commite525bc9c260c6dcb96cd08590a8a983701af9419 (patch)
tree042b1f0692d1bc0df6f73b49eb3971b40ba69707
parent7fe70b0c0610a5dcc13f557468eabc91cdd34a27 (diff)
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Fix MIPS32 frame-pointer forcing for more recent GCC.
-rw-r--r--ChangeLog.mips6
-rw-r--r--sysdeps/unix/sysv/linux/mips/mips32/sysdep.h5
2 files changed, 9 insertions, 2 deletions
diff --git a/ChangeLog.mips b/ChangeLog.mips
index 853f286811..9469b5c576 100644
--- a/ChangeLog.mips
+++ b/ChangeLog.mips
@@ -1,3 +1,9 @@
+2012-06-14  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/mips/mips32/sysdep.h
+	(FORCE_FRAME_POINTER): Assign result of alloca to a volatile
+	variable.
+
 2012-06-01  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/mips/mips64/n32/s_fma.c: New file.
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/sysdep.h b/sysdeps/unix/sysv/linux/mips/mips32/sysdep.h
index e51f3295ea..8c024b0241 100644
--- a/sysdeps/unix/sysv/linux/mips/mips32/sysdep.h
+++ b/sysdeps/unix/sysv/linux/mips/mips32/sysdep.h
@@ -194,8 +194,9 @@
 /* We need to use a frame pointer for the functions in which we
    adjust $sp around the syscall, or debug information and unwind
    information will be $sp relative and thus wrong during the syscall.  As
-   of GCC 3.4.3, this is sufficient.  */
-#define FORCE_FRAME_POINTER alloca (4)
+   of GCC 4.7, this is sufficient.  */
+#define FORCE_FRAME_POINTER						\
+  void *volatile __fp_force __attribute__ ((unused)) = alloca (4)
 
 #define internal_syscall5(ncs_init, cs_init, input, err, arg1, arg2, arg3, arg4, arg5)\
 ({									\