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| author | Igor Tsimbalist <igor.v.tsimbalist@intel.com> | 2018-02-02 11:06:39 +0100 |
|---|---|---|
| committer | Igor Tsimbalist <itsimbal@gcc.gnu.org> | 2018-02-02 11:06:39 +0100 |
| commit | e8a5a6f6e2e4e06b8e8d357712277fb54ed71b07 (patch) | |
| tree | 4b9d182199d033a4586990c2ae1786953643e0a3 /gcc/go | |
| parent | fe23b12a23e357103a40fda08df33f3547f112e6 (diff) | |
| download | gcc-e8a5a6f6e2e4e06b8e8d357712277fb54ed71b07.zip gcc-e8a5a6f6e2e4e06b8e8d357712277fb54ed71b07.tar.gz gcc-e8a5a6f6e2e4e06b8e8d357712277fb54ed71b07.tar.bz2 | |
PR84066 Wrong shadow stack register size is saved for x32
x32 is a 64-bit process with 32-bit software pointer and kernel may
place x32 shadow stack above 4GB. We need to save and restore 64-bit
shadow stack register for x32. builtin jmp buf size is 5 pointers. We
have space to save 64-bit shadow stack pointers: 32-bit SP, 32-bit FP,
32-bit IP, 64-bit SSP for x32.
PR target/84066
* gcc/config/i386/i386.md: Replace Pmode with word_mode in
builtin_setjmp_setup and builtin_longjmp to support x32.
* gcc/testsuite/gcc.target/i386/cet-sjlj-6a.c: New test.
* gcc/testsuite/gcc.target/i386/cet-sjlj-6b.c: Likewise.
From-SVN: r257326
Diffstat (limited to 'gcc/go')
0 files changed, 0 insertions, 0 deletions