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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 30 |
1 files changed, 30 insertions, 0 deletions
@@ -1,3 +1,33 @@ +2018-07-25 Vedvyas Shanbhogue <vedvyas.shanbhogue@intel.com> + H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/unix/sysv/linux/x86/sys/ucontext.h (ucontext_t): Add + __ssp. + * sysdeps/unix/sysv/linux/x86_64/__start_context.S: Include + <asm/prctl.h> and "ucontext_i.h" when shadow stack is enabled. + (__push___start_context): New. + * sysdeps/unix/sysv/linux/x86_64/getcontext.S: Include + <asm/prctl.h>. + (__getcontext): Record the current shadow stack base. Save the + caller's shadow stack pointer and base. + * sysdeps/unix/sysv/linux/x86_64/makecontext.c: Include + <pthread.h>, <libc-pointer-arith.h> and <sys/prctl.h>. + (__push___start_context): New prototype. + (__makecontext): Call __push___start_context to allocate a new + shadow stack, push __start_context onto the new stack as well + as the new shadow stack. + * sysdeps/unix/sysv/linux/x86_64/setcontext.S: Include + <asm/prctl.h>. + (__setcontext): Restore the target shadow stack. + * sysdeps/unix/sysv/linux/x86_64/swapcontext.S: Include + <asm/prctl.h>. + (__swapcontext): Record the current shadow stack base. Save + the caller's shadow stack pointer and base. Restore the target + shadow stack. + * sysdeps/unix/sysv/linux/x86_64/sysdep.h + (STACK_SIZE_TO_SHADOW_STACK_SIZE_SHIFT): New. + * sysdeps/unix/sysv/linux/x86_64/ucontext_i.sym (oSSP): New. + 2018-07-25 H.J. Lu <hongjiu.lu@intel.com> * stdlib/Makefile ((tests): Add tst-setcontext6, tst-setcontext7, |