diff options
| author | Bill Schmidt <wschmidt@linux.ibm.com> | 2021-05-14 14:15:55 -0500 |
|---|---|---|
| committer | Bill Schmidt <wschmidt@linux.ibm.com> | 2021-05-15 14:04:44 -0500 |
| commit | 0df864ed1d24bbb0cf7504814e2f48e496ea5669 (patch) | |
| tree | d5365a837de269765543ca4ec09fbd7f81e30be9 /gcc/doc | |
| parent | 57d2342fbb55f73ef29ca186744663b320352c92 (diff) | |
| download | gcc-0df864ed1d24bbb0cf7504814e2f48e496ea5669.zip gcc-0df864ed1d24bbb0cf7504814e2f48e496ea5669.tar.gz gcc-0df864ed1d24bbb0cf7504814e2f48e496ea5669.tar.bz2 | |
rs6000: Add -mrop-protect and -mprivileged flags
2021-05-14 Bill Schmidt <wschmidt@linux.ibm.com>
gcc/
* config/rs6000/rs6000.c (rs6000_option_override_internal):
Disable shrink wrap when inserting ROP-protect instructions.
* config/rs6000/rs6000.opt (mrop-protect): New option.
(mprivileged): Likewise.
* doc/invoke.texi: Document mrop-protect and mprivileged.
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 5198815..9cb8421 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1240,7 +1240,8 @@ See RS/6000 and PowerPC Options. -mgnu-attribute -mno-gnu-attribute @gol -mstack-protector-guard=@var{guard} -mstack-protector-guard-reg=@var{reg} @gol -mstack-protector-guard-offset=@var{offset} -mprefixed -mno-prefixed @gol --mpcrel -mno-pcrel -mmma -mno-mmma} +-mpcrel -mno-pcrel -mmma -mno-mmma -mrop-protect -mno-rop-protect @gol +-mprivileged -mno-privileged} @emph{RX Options} @gccoptlist{-m64bit-doubles -m32bit-doubles -fpu -nofpu@gol @@ -27029,7 +27030,8 @@ following options: -mmulhw -mdlmzb -mmfpgpr -mvsx @gol -mcrypto -mhtm -mpower8-fusion -mpower8-vector @gol -mquad-memory -mquad-memory-atomic -mfloat128 @gol --mfloat128-hardware -mprefixed -mpcrel -mmma} +-mfloat128-hardware -mprefixed -mpcrel -mmma @gol +-mrop-protect} The particular options set for any particular CPU varies between compiler versions, depending on what setting seems to produce optimal @@ -28034,6 +28036,20 @@ store instructions when the option @option{-mcpu=future} is used. Generate (do not generate) the MMA instructions when the option @option{-mcpu=future} is used. +@item -mrop-protect +@itemx -mno-rop-protect +@opindex mrop-protect +@opindex mno-rop-protect +Generate (do not generate) ROP protection instructions when the target +processor supports them. Currently this option disables the shrink-wrap +optimization (@option{-fshrink-wrap}). + +@item -mprivileged +@itemx -mno-privileged +@opindex mprivileged +@opindex mno-privileged +Generate (do not generate) code that will run in privileged state. + @item -mblock-ops-unaligned-vsx @itemx -mno-block-ops-unaligned-vsx @opindex block-ops-unaligned-vsx |