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| author | Uros Bizjak <uros@gcc.gnu.org> | 2011-08-02 11:01:37 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2011-08-02 11:01:37 +0200 |
| commit | 643e867f08b5c9cb3e53f17761787c53fae6a89d (patch) | |
| tree | dfce53916e52f6fa83a496805848ed5e3a6d7c44 /gcc | |
| parent | eaba57fb0a6e78750c116ff716071f6f46a0db2c (diff) | |
| download | gcc-643e867f08b5c9cb3e53f17761787c53fae6a89d.zip gcc-643e867f08b5c9cb3e53f17761787c53fae6a89d.tar.gz gcc-643e867f08b5c9cb3e53f17761787c53fae6a89d.tar.bz2 | |
re PR target/47766 ([x32] -fstack-protector doesn't work)
PR target/47766
* doc/md.texi (stack_protect_set): The pattern moves ptr_mode value.
(stack_protect_test): The pattern compares ptr_mode value.
From-SVN: r177096
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/doc/md.texi | 4 |
2 files changed, 9 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f8e25c0..55ba5b0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-08-02 Uros Bizjak <ubizjak@gmail.com> + + PR target/47766 + * doc/md.texi (stack_protect_set): The pattern moves ptr_mode value. + (stack_protect_test): The pattern compares ptr_mode value. + 2011-08-02 Alan Modra <amodra@gmail.com> * config/rs6000/rs6000.c (rs6000_emit_prologue): Add REG_CFA_RESTORE @@ -5,8 +11,7 @@ 2011-08-01 H.J. Lu <hongjiu.lu@intel.com> - * config/i386/lzcntintrin.h (__lzcnt64): Replace long with - long long. + * config/i386/lzcntintrin.h (__lzcnt64): Replace long with long long. 2011-08-01 Sebastian Pop <sebastian.pop@amd.com> Joseph Myers <joseph@codesourcery.com> diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index 1f08dae..3eae212 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -5557,7 +5557,7 @@ will be emitted, followed by a store of the value to the memory operand. @cindex @code{stack_protect_set} instruction pattern @item @samp{stack_protect_set} -This pattern, if defined, moves a @code{Pmode} value from the memory +This pattern, if defined, moves a @code{ptr_mode} value from the memory in operand 1 to the memory in operand 0 without leaving the value in a register afterward. This is to avoid leaking the value some place that an attacker might use to rewrite the stack guard slot after @@ -5568,7 +5568,7 @@ If this pattern is not defined, then a plain move pattern is generated. @cindex @code{stack_protect_test} instruction pattern @item @samp{stack_protect_test} -This pattern, if defined, compares a @code{Pmode} value from the +This pattern, if defined, compares a @code{ptr_mode} value from the memory in operand 1 with the memory in operand 0 without leaving the value in a register afterward and branches to operand 2 if the values weren't equal. |