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c175b21ce4
Bring in the fixes for GCC 7 through 13. https://rtx.meta.security/mitigation/2023/09/12/CVE-2023-4039.html https://developer.arm.com/Arm%20Security%20Center/GCC%20Stack%20Protector%20Vulnerability%20AArch64 Signed-off-by: Chris Packham <judge.packham@gmail.com>
46 lines
1.6 KiB
Diff
46 lines
1.6 KiB
Diff
From 2b983f9064d808daf909bde1d4a13980934a7e6e Mon Sep 17 00:00:00 2001
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From: Richard Sandiford <richard.sandiford@arm.com>
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Date: Tue, 12 Sep 2023 16:08:51 +0100
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Subject: [PATCH 16/28] aarch64: Only calculate chain_offset if there is a
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chain
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After previous patches, it is no longer necessary to calculate
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a chain_offset in cases where there is no chain record.
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gcc/
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* config/aarch64/aarch64.cc (aarch64_expand_prologue): Move the
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calculation of chain_offset into the emit_frame_chain block.
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---
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gcc/config/aarch64/aarch64.cc | 10 +++++-----
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1 file changed, 5 insertions(+), 5 deletions(-)
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diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
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index e79551af41df..d71a042d6112 100644
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--- a/gcc/config/aarch64/aarch64.cc
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+++ b/gcc/config/aarch64/aarch64.cc
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@@ -9747,16 +9747,16 @@ aarch64_expand_prologue (void)
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if (callee_adjust != 0)
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aarch64_push_regs (reg1, reg2, callee_adjust);
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- /* The offset of the frame chain record (if any) from the current SP. */
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- poly_int64 chain_offset = (initial_adjust + callee_adjust
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- - frame.hard_fp_offset);
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- gcc_assert (known_ge (chain_offset, 0));
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-
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/* The offset of the current SP from the bottom of the static frame. */
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poly_int64 bytes_below_sp = frame_size - initial_adjust - callee_adjust;
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if (emit_frame_chain)
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{
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+ /* The offset of the frame chain record (if any) from the current SP. */
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+ poly_int64 chain_offset = (initial_adjust + callee_adjust
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+ - frame.hard_fp_offset);
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+ gcc_assert (known_ge (chain_offset, 0));
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+
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if (callee_adjust == 0)
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{
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reg1 = R29_REGNUM;
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--
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2.42.0
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