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| author | Andrew Ruder <andrew.ruder@elecsyscorp.com> | 2014-01-24 09:11:19 -0600 |
|---|---|---|
| committer | Peter Korsgaard <peter@korsgaard.com> | 2014-01-27 09:17:36 +0100 |
| commit | c443c2be1768ebbdcb76c55d0a08fd7c983488c8 (patch) | |
| tree | f641ef7994225ff01785e4d42d9cf8c144a1dd1e /package/gcc | |
| parent | f5437a65020f6882cc6cc3c25d781cdd5bd32e21 (diff) | |
| download | buildroot-c443c2be1768ebbdcb76c55d0a08fd7c983488c8.tar.gz buildroot-c443c2be1768ebbdcb76c55d0a08fd7c983488c8.zip | |
gcc 4.8.2: arm fixes for stack corruption
This seems to especially affect the kernel, but in an
interrupt-heavy system, this fixes a bug that can cause frequent
NULL pointer dereference crashes on ARM systems.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Diffstat (limited to 'package/gcc')
| -rw-r--r-- | package/gcc/4.8.2/842-gcc-4.8.2-Fix-PR-target-58854.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/package/gcc/4.8.2/842-gcc-4.8.2-Fix-PR-target-58854.patch b/package/gcc/4.8.2/842-gcc-4.8.2-Fix-PR-target-58854.patch new file mode 100644 index 0000000000..4927930133 --- /dev/null +++ b/package/gcc/4.8.2/842-gcc-4.8.2-Fix-PR-target-58854.patch @@ -0,0 +1,32 @@ +From 9a228f68817f79bbd1d295b8e6fcaed25c47ee8f Mon Sep 17 00:00:00 2001 +From: ramana <ramana@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Wed, 30 Oct 2013 10:54:04 +0000 +Subject: [PATCH] Fix PR target/58854 + +2013-10-30 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com> + + PR target/58854 + * config/arm/arm.c (arm_expand_epilogue_apcs_frame): Emit blockage. + + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204203 138bc75d-0d04-0410-961f-82ee72b054a4 +--- + (omitted from this patch) gcc/ChangeLog | 5 +++++ + gcc/config/arm/arm.c | 1 + + 2 files changed, 6 insertions(+), 0 deletions(-) + +diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c +index 212a4bc..23dfc0e 100644 +--- a/gcc/config/arm/arm.c ++++ b/gcc/config/arm/arm.c +@@ -26547,6 +26547,7 @@ arm_expand_epilogue_apcs_frame (bool really_return) + num_regs = bit_count (saved_regs_mask); + if ((offsets->outgoing_args != (1 + num_regs)) || cfun->calls_alloca) + { ++ emit_insn (gen_blockage ()); + /* Unwind the stack to just below the saved registers. */ + emit_insn (gen_addsi3 (stack_pointer_rtx, + hard_frame_pointer_rtx, +-- +1.7.1 + |
