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| author | Chris Packham <judge.packham@gmail.com> | 2023-09-13 17:10:20 +1200 |
|---|---|---|
| committer | Chris Packham <judge.packham@gmail.com> | 2023-09-17 15:41:50 +1200 |
| commit | c175b21ce470a07875a5db86f21439f02f93df0e (patch) | |
| tree | fb9e2da6156e247142f9c67fe21edd5a5978f66a /packages/gcc/7.5.0/0024-aarch64-Explicitly-handle-frames-with-no-saved-regis.patch | |
| parent | 977ed69427889a09f8e77ff9b60a6d50a18d8417 (diff) | |
| download | crosstool-ng-c175b21ce470a07875a5db86f21439f02f93df0e.tar.gz crosstool-ng-c175b21ce470a07875a5db86f21439f02f93df0e.tar.bz2 crosstool-ng-c175b21ce470a07875a5db86f21439f02f93df0e.zip | |
gcc: Bring in upstream fixes for CVE-2023-4039
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>
Diffstat (limited to 'packages/gcc/7.5.0/0024-aarch64-Explicitly-handle-frames-with-no-saved-regis.patch')
| -rw-r--r-- | packages/gcc/7.5.0/0024-aarch64-Explicitly-handle-frames-with-no-saved-regis.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/packages/gcc/7.5.0/0024-aarch64-Explicitly-handle-frames-with-no-saved-regis.patch b/packages/gcc/7.5.0/0024-aarch64-Explicitly-handle-frames-with-no-saved-regis.patch new file mode 100644 index 00000000..b2c9005e --- /dev/null +++ b/packages/gcc/7.5.0/0024-aarch64-Explicitly-handle-frames-with-no-saved-regis.patch @@ -0,0 +1,41 @@ +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 + |