| commit | d92b55a26032682f9691d98cbac944ea06e0d504 | |
| author | itsimbal <itsimbal@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Fri, 17 Nov 2017 22:57:07 +0000 (17 22:57 +0000) | ||
| committer | itsimbal <itsimbal@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Fri, 17 Nov 2017 22:57:07 +0000 (17 22:57 +0000) | ||
| tree | 0ff8632cc51a62f1347e564e5a2d05329e0aee43 | treesnapshot (tar.gz zip) |
| parent | 76501cd11b45f2a2e7e2d5d29f74d597bfa4e599 | commitdiff |
Add extra field to gtm_jmpbuf on x86 only
Expand the gtm_jmpbuf structure by one word field to add
Intel CET support further. The code in sjlj.S already
allocates more space on the stack then gtm_jmpbuf needs.
Use this extra space to absorb the new field.
The structure is allocated on the stack in such a way
that eip/rsp field is overlapped with return address on
the stack. Locate the new field right before eip/rsp so
code that accesses buffer fields relative to address of
gtm_jmpbuf has its offsets unchanged.
* libitm/config/x86/target.h: Add new field (ssp).
* libitm/config/x86/sjlj.S: Change offsets.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@254907 138bc75d-0d04-0410-961f-82ee72b054a4
Expand the gtm_jmpbuf structure by one word field to add
Intel CET support further. The code in sjlj.S already
allocates more space on the stack then gtm_jmpbuf needs.
Use this extra space to absorb the new field.
The structure is allocated on the stack in such a way
that eip/rsp field is overlapped with return address on
the stack. Locate the new field right before eip/rsp so
code that accesses buffer fields relative to address of
gtm_jmpbuf has its offsets unchanged.
* libitm/config/x86/target.h: Add new field (ssp).
* libitm/config/x86/sjlj.S: Change offsets.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@254907 138bc75d-0d04-0410-961f-82ee72b054a4
| libitm/ChangeLog | diffblobblamehistory | |
| libitm/config/x86/sjlj.S | diffblobblamehistory | |
| libitm/config/x86/target.h | diffblobblamehistory |