i386.md (stack_protect_set): Disable the pattern for Android since Android libc ...

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

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d79da22e9f12f010a5bd1727efabb0b340ab02fc..60314f5f6bf27fb59d31ce0dd43cedff211fd152 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -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.

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 6c2ac842bffbcf71ec4892d2b4cf503a5c75e311..6a446a31ca089c0d5fd3b3e4ec1aba30a8c0d175 100644 (file)
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -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")])
 

diff --git a/gcc/config/linux.h b/gcc/config/linux.h
index dbbeea5c7fdd36055ef9360d00307e1cda070569..fb459e68028bb05dd073638b773d96bdc3f3521b 100644 (file)
--- a/gcc/config/linux.h
+++ b/gcc/config/linux.h
@@ -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)

diff --git a/gcc/defaults.h b/gcc/defaults.h
index cfd44babb0f7b8cb7fc6da3b523403bbe8f74ec7..316a1c31928fc8aa94ef6b5faf1d4438bce97aff 100644 (file)
--- a/gcc/defaults.h
+++ b/gcc/defaults.h
@@ -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