diff options
| author | H.J. Lu <hjl.tools@gmail.com> | 2018-07-14 05:59:29 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-07-14 05:59:53 -0700 |
| commit | faaee1f07ed25b2779bfd935ffb29f431b80d6d3 (patch) | |
| tree | 3c85f88e2312c67e0f0e54be10b0bec833c7541f /ChangeLog | |
| parent | ebff9c5cfae62e84dbd0456d564bd882818dc15f (diff) | |
x86: Support shadow stack pointer in setjmp/longjmp
Save and restore shadow stack pointer in setjmp and longjmp to support
shadow stack in Intel CET. Use feature_1 in tcbhead_t to check if
shadow stack is enabled before saving and restoring shadow stack pointer.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* sysdeps/i386/__longjmp.S: Include <jmp_buf-ssp.h>.
(__longjmp): Restore shadow stack pointer if shadow stack is
enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp
isn't defined for __longjmp_cancel.
* sysdeps/i386/bsd-_setjmp.S: Include <jmp_buf-ssp.h>.
(_setjmp): Save shadow stack pointer if shadow stack is enabled
and SHADOW_STACK_POINTER_OFFSET is defined.
* sysdeps/i386/bsd-setjmp.S: Include <jmp_buf-ssp.h>.
(setjmp): Save shadow stack pointer if shadow stack is enabled
and SHADOW_STACK_POINTER_OFFSET is defined.
* sysdeps/i386/setjmp.S: Include <jmp_buf-ssp.h>.
(__sigsetjmp): Save shadow stack pointer if shadow stack is
enabled and SHADOW_STACK_POINTER_OFFSET is defined.
* sysdeps/unix/sysv/linux/i386/____longjmp_chk.S: Include
<jmp_buf-ssp.h>.
(____longjmp_chk): Restore shadow stack pointer if shadow stack
is enabled and SHADOW_STACK_POINTER_OFFSET is defined.
* sysdeps/unix/sysv/linux/x86/Makefile (gen-as-const-headers):
Remove jmp_buf-ssp.sym.
* sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S: Include
<jmp_buf-ssp.h>.
(____longjmp_chk): Restore shadow stack pointer if shadow stack
is enabled and SHADOW_STACK_POINTER_OFFSET is defined.
* sysdeps/x86/Makefile (gen-as-const-headers): Add
jmp_buf-ssp.sym.
* sysdeps/x86/jmp_buf-ssp.sym: New dummy file.
* sysdeps/x86_64/__longjmp.S: Include <jmp_buf-ssp.h>.
(__longjmp): Restore shadow stack pointer if shadow stack is
enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp
isn't defined for __longjmp_cancel.
* sysdeps/x86_64/setjmp.S: Include <jmp_buf-ssp.h>.
(__sigsetjmp): Save shadow stack pointer if shadow stack is
enabled and SHADOW_STACK_POINTER_OFFSET is defined.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 37 |
1 files changed, 37 insertions, 0 deletions
@@ -1,3 +1,40 @@ +2018-07-14 Igor Tsimbalist <igor.v.tsimbalist@intel.com> + H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/i386/__longjmp.S: Include <jmp_buf-ssp.h>. + (__longjmp): Restore shadow stack pointer if shadow stack is + enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp + isn't defined for __longjmp_cancel. + * sysdeps/i386/bsd-_setjmp.S: Include <jmp_buf-ssp.h>. + (_setjmp): Save shadow stack pointer if shadow stack is enabled + and SHADOW_STACK_POINTER_OFFSET is defined. + * sysdeps/i386/bsd-setjmp.S: Include <jmp_buf-ssp.h>. + (setjmp): Save shadow stack pointer if shadow stack is enabled + and SHADOW_STACK_POINTER_OFFSET is defined. + * sysdeps/i386/setjmp.S: Include <jmp_buf-ssp.h>. + (__sigsetjmp): Save shadow stack pointer if shadow stack is + enabled and SHADOW_STACK_POINTER_OFFSET is defined. + * sysdeps/unix/sysv/linux/i386/____longjmp_chk.S: Include + <jmp_buf-ssp.h>. + (____longjmp_chk): Restore shadow stack pointer if shadow stack + is enabled and SHADOW_STACK_POINTER_OFFSET is defined. + * sysdeps/unix/sysv/linux/x86/Makefile (gen-as-const-headers): + Remove jmp_buf-ssp.sym. + * sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S: Include + <jmp_buf-ssp.h>. + (____longjmp_chk): Restore shadow stack pointer if shadow stack + is enabled and SHADOW_STACK_POINTER_OFFSET is defined. + * sysdeps/x86/Makefile (gen-as-const-headers): Add + jmp_buf-ssp.sym. + * sysdeps/x86/jmp_buf-ssp.sym: New dummy file. + * sysdeps/x86_64/__longjmp.S: Include <jmp_buf-ssp.h>. + (__longjmp): Restore shadow stack pointer if shadow stack is + enabled, SHADOW_STACK_POINTER_OFFSET is defined and __longjmp + isn't defined for __longjmp_cancel. + * sysdeps/x86_64/setjmp.S: Include <jmp_buf-ssp.h>. + (__sigsetjmp): Save shadow stack pointer if shadow stack is + enabled and SHADOW_STACK_POINTER_OFFSET is defined. + 2018-07-14 H.J. Lu <hongjiu.lu@intel.com> [BZ #22563] |