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| author | Nick Alcock <nick.alcock@oracle.com> | 2016-12-26 10:09:06 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2016-12-26 10:11:06 +0100 |
| commit | 2e6c45c59bcd40f1ae8466cbd32f4d263ff45619 (patch) | |
| tree | fc558d3f90670cf9028bfd33839dbe75c2d674bb /math | |
| parent | 1ad4ba28e9335c288687d1757bce3221c522f576 (diff) | |
| download | glibc-2e6c45c59bcd40f1ae8466cbd32f4d263ff45619.tar.gz glibc-2e6c45c59bcd40f1ae8466cbd32f4d263ff45619.tar.xz glibc-2e6c45c59bcd40f1ae8466cbd32f4d263ff45619.zip | |
Do not stack-protect sigreturn stubs [BZ #7065]
These are called from the kernel with the stack at a carefully- chosen location so that the stack frame can be restored: they must not move the stack pointer lest garbage be restored into the registers. We explicitly inhibit protection for SPARC and for signal/sigreturn.c: other arches either define their sigreturn stubs in .S files, or (i386, x86_64, mips) use macros expanding to top-level asm blocks and explicit labels in the text section to mock up a "function" without telling the compiler that one is there at all.
Diffstat (limited to 'math')
0 files changed, 0 insertions, 0 deletions