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i386.md (stack_protect_set): Disable the pattern for Android since Android libc (bionic) does not provide...

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2012-07-25 Sergey Melnikov <sergey.melnikov@intel.com>

        * config/i386/i386.md (stack_protect_set): Disable the pattern
        for Android since Android libc (bionic) does not provide random
        value for stack protection guard at gs:0x14. Guard value
        will be provided from external symbol (default implementation).
        (stack_protect_set_<mode>): Likewise.
        (stack_protect_test): Likewise.
        (stack_protect_test_<mode>): Likewise.
        * gcc/defaults.h: Define macro TARGET_HAS_BIONIC to 0 - target does
        not have Bionic by default
        * config/linux.h: Redefine macro TARGET_HAS_BIONIC to (OPTION_BIONIC)
        Macro OPTION_BIONIC is defined in this file and provides Bionic
        accessibility status

From-SVN: r189840
This commit is contained in:
Sergey Melnikov 2012-07-25 10:33:20 +00:00 • committed by Kirill Yukhin
parent 3e31cf28a4
commit 4bd5abcae1
4 changed files with 28 additions and 4 deletions
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15
gcc/ChangeLog
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@ -1,3 +1,18 @@
2012-07-25 Sergey Melnikov <sergey.melnikov@intel.com>
* config/i386/i386.md (stack_protect_set): Disable the pattern
for Android since Android libc (bionic) does not provide random
value for stack protection guard at gs:0x14. Guard value
will be provided from external symbol (default implementation).
(stack_protect_set_<mode>): Likewise.
(stack_protect_test): Likewise.
(stack_protect_test_<mode>): Likewise.
* gcc/defaults.h: Define macro TARGET_HAS_BIONIC to 0 - target does
not have Bionic by default
* config/linux.h: Redefine macro TARGET_HAS_BIONIC to (OPTION_BIONIC)
Macro OPTION_BIONIC is defined in this file and provides Bionic
accessibility status
2012-07-25 Steven Bosscher <steven@gcc.gnu.org>
* gimple-pretty-print.c (gimple_dump_bb_buff): Call pp_flush.

8
gcc/config/i386/i386.md
View file

@ -17677,7 +17677,7 @@
(define_expand "stack_protect_set"
[(match_operand 0 "memory_operand")
(match_operand 1 "memory_operand")]
""
"!TARGET_HAS_BIONIC"
{
rtx (*insn)(rtx, rtx);
@ -17702,7 +17702,7 @@
UNSPEC_SP_SET))
(set (match_scratch:PTR 2 "=&r") (const_int 0))
(clobber (reg:CC FLAGS_REG))]
""
"!TARGET_HAS_BIONIC"
"mov{<imodesuffix>}\t{%1, %2|%2, %1}\;mov{<imodesuffix>}\t{%2, %0|%0, %2}\;xor{l}\t%k2, %k2"
[(set_attr "type" "multi")])
@ -17720,7 +17720,7 @@
[(match_operand 0 "memory_operand")
(match_operand 1 "memory_operand")
(match_operand 2)]
""
"!TARGET_HAS_BIONIC"
{
rtx flags = gen_rtx_REG (CCZmode, FLAGS_REG);
@ -17750,7 +17750,7 @@
(match_operand:PTR 2 "memory_operand" "m")]
UNSPEC_SP_TEST))
(clobber (match_scratch:PTR 3 "=&r"))]
""
"!TARGET_HAS_BIONIC"
"mov{<imodesuffix>}\t{%1, %3|%3, %1}\;xor{<imodesuffix>}\t{%2, %3|%3, %2}"
[(set_attr "type" "multi")])

4
gcc/config/linux.h
View file

@ -104,3 +104,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
/* Whether we have sincos that follows the GNU extension. */
#undef TARGET_HAS_SINCOS
#define TARGET_HAS_SINCOS (OPTION_GLIBC || OPTION_BIONIC)
/* Whether we have Bionic libc runtime */
#undef TARGET_HAS_BIONIC
#define TARGET_HAS_BIONIC (OPTION_BIONIC)

5
gcc/defaults.h
View file

@ -1054,6 +1054,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#define TARGET_HAS_SINCOS 0
#endif
/* Determin whether the target runtime library is Bionic */
#ifndef TARGET_HAS_BIONIC
#define TARGET_HAS_BIONIC 0
#endif
/* Indicate that CLZ and CTZ are undefined at zero. */
#ifndef CLZ_DEFINED_VALUE_AT_ZERO
#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) 0