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| author | Uros Bizjak <ubizjak@gmail.com> | 2018-08-15 23:07:08 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2018-08-15 23:07:08 +0200 |
| commit | 9fe138fd34837a91334740e9a62f4f7c79428ae8 (patch) | |
| tree | cadb6c44fa2f79a7de491f403881f245d7216b61 /gcc/doc/invoke.texi | |
| parent | 245fbaaadfb4af170b63056c0254e61201e8834f (diff) | |
| download | gcc-9fe138fd34837a91334740e9a62f4f7c79428ae8.zip gcc-9fe138fd34837a91334740e9a62f4f7c79428ae8.tar.gz gcc-9fe138fd34837a91334740e9a62f4f7c79428ae8.tar.bz2 | |
i386.opt (mmitigate-rop): Mark as deprecated.
* config/i386/i386.opt (mmitigate-rop): Mark as deprecated.
* doc/invoke.texi (mmitigate-rop): Remove.
* config/i386/i386.c: Do not include "regrename.h".
(ix86_rop_should_change_byte_p, reg_encoded_number)
(ix86_get_modrm_for_rop, set_rop_modrm_reg_bits, ix86_mitigate_rop):
Remove.
(ix86_reorg): Remove call to ix86_mitigate_rop.
* config/i386/i386.md (attr "modrm_class"): Remove.
(cmp<mode>_ccno_1, mov<mode>_xor, movstrict<mode>_xor)
(x86_mov<mode>cc_0_m1. x86_mov<mode>cc_0_m1_se)
(x86_mov<mode>cc_0_m1_neg): Remove modrm_class attribute override.
testsuite/Changelog:
* gcc.target/i386/rop1.c: Remove.
* gcc.target/i386/pr83554 (dg-options): Remove -mmitigate-rop.
From-SVN: r263572
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 586af17..d91e6c5 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1292,7 +1292,7 @@ See RS/6000 and PowerPC Options. -malign-data=@var{type} -mstack-protector-guard=@var{guard} @gol -mstack-protector-guard-reg=@var{reg} @gol -mstack-protector-guard-offset=@var{offset} @gol --mstack-protector-guard-symbol=@var{symbol} -mmitigate-rop @gol +-mstack-protector-guard-symbol=@var{symbol} @gol -mgeneral-regs-only -mcall-ms2sysv-xlogues @gol -mindirect-branch=@var{choice} -mfunction-return=@var{choice} @gol -mindirect-branch-register} @@ -28003,13 +28003,6 @@ which segment register (@code{%fs} or @code{%gs}) to use as base register for reading the canary, and from what offset from that base register. The default for those is as specified in the relevant ABI. -@item -mmitigate-rop -@opindex mmitigate-rop -Try to avoid generating code sequences that contain unintended return -opcodes, to mitigate against certain forms of attack. At the moment, -this option is limited in what it can do and should not be relied -on to provide serious protection. - @item -mgeneral-regs-only @opindex mgeneral-regs-only Generate code that uses only the general-purpose registers. This |