mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-23 22:52:23 +00:00
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>
42 lines
1.5 KiB
Diff
42 lines
1.5 KiB
Diff
From 04553281f42e5c4340d554a93d1a73006365d8fb Mon Sep 17 00:00:00 2001
|
|
From: Richard Sandiford <richard.sandiford@arm.com>
|
|
Date: Fri, 16 Jun 2023 17:00:51 +0100
|
|
Subject: [PATCH 24/30] aarch64: Explicitly handle frames with no saved
|
|
registers
|
|
|
|
If a frame has no saved registers, it can be allocated in one go.
|
|
There is no need to treat the areas below and above the saved
|
|
registers as separate.
|
|
|
|
This is a no-op as thing stand, since a leaf function will have
|
|
no outgoing arguments, and so all the frame will be above where
|
|
the saved registers normally go.
|
|
|
|
gcc/
|
|
* config/aarch64/aarch64.c (aarch64_layout_frame): Explicitly
|
|
allocate the frame in one go if there are no saved registers.
|
|
---
|
|
gcc/config/aarch64/aarch64.c | 6 ++++--
|
|
1 file changed, 4 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
|
|
index 4e94be3b0b4d..bb4f6020e5df 100644
|
|
--- a/gcc/config/aarch64/aarch64.c
|
|
+++ b/gcc/config/aarch64/aarch64.c
|
|
@@ -2901,8 +2901,10 @@ aarch64_layout_frame (void)
|
|
else if (cfun->machine->frame.wb_candidate1 != INVALID_REGNUM)
|
|
max_push_offset = 256;
|
|
|
|
- if (cfun->machine->frame.frame_size < max_push_offset
|
|
- && crtl->outgoing_args_size == 0)
|
|
+ if (cfun->machine->frame.saved_regs_size == 0)
|
|
+ cfun->machine->frame.initial_adjust = cfun->machine->frame.frame_size;
|
|
+ else if (cfun->machine->frame.frame_size < max_push_offset
|
|
+ && crtl->outgoing_args_size == 0)
|
|
{
|
|
/* Simple, small frame with no outgoing arguments:
|
|
stp reg1, reg2, [sp, -frame_size]!
|
|
--
|
|
2.42.0
|
|
|