71 lines
2.7 KiB
Diff
71 lines
2.7 KiB
Diff
First part taken from Alpine.
|
|
|
|
Second part added to prevent gccgo from thinking it can -fsplit-stack on musl.
|
|
|
|
--- a/gcc/gcc.c
|
|
+++ b/gcc/gcc.c
|
|
@@ -874,10 +874,15 @@ proper position among the other output files. */
|
|
#define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L %G}"
|
|
#endif
|
|
|
|
+#ifdef ENABLE_DEFAULT_SSP
|
|
+#define NO_SSP_SPEC "%{nostdlib|nodefaultlibs|ffreestanding:-fno-stack-protector} "
|
|
+#else
|
|
+#define NO_SSP_SPEC ""
|
|
+#endif
|
|
+
|
|
#ifndef LINK_SSP_SPEC
|
|
#ifdef TARGET_LIBC_PROVIDES_SSP
|
|
-#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
|
|
- "|fstack-protector-strong|fstack-protector-explicit:}"
|
|
+#define LINK_SSP_SPEC "-lssp_nonshared"
|
|
#else
|
|
#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
|
|
"|fstack-protector-strong|fstack-protector-explicit" \
|
|
@@ -1155,7 +1160,7 @@ static const char *cc1_options =
|
|
%{-version:--version}\
|
|
%{-help=*:--help=%*}\
|
|
%{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
|
|
- %{fsyntax-only:-o %j} %{-param*}\
|
|
+ %{fsyntax-only:-o %j} %{-param*} " NO_SSP_SPEC "\
|
|
%{coverage:-fprofile-arcs -ftest-coverage}\
|
|
%{fprofile-arcs|fprofile-generate*|coverage:\
|
|
%{!fprofile-update=single:\
|
|
--- a/gcc/params.opt
|
|
+++ b/gcc/params.opt
|
|
@@ -853,7 +853,7 @@ Common Joined UInteger Var(param_ssa_name_def_chain_limit) Init(512) Param Optim
|
|
The maximum number of SSA_NAME assignments to follow in determining a value.
|
|
|
|
-param=ssp-buffer-size=
|
|
-Common Joined UInteger Var(param_ssp_buffer_size) Init(8) IntegerRange(1, 65536) Param Optimization
|
|
+Common Joined UInteger Var(param_ssp_buffer_size) Init(4) IntegerRange(1, 65536) Param Optimization
|
|
The lower bound for a buffer to be considered for stack smashing protection.
|
|
|
|
-param=stack-clash-protection-guard-size=
|
|
--- a/gcc/config/i386/gnu-user-common.h
|
|
+++ b/gcc/config/i386/gnu-user-common.h
|
|
@@ -64,9 +64,3 @@ along with GCC; see the file COPYING3. If not see
|
|
|
|
/* Static stack checking is supported by means of probes. */
|
|
#define STACK_CHECK_STATIC_BUILTIN 1
|
|
-
|
|
-/* We only build the -fsplit-stack support in libgcc if the
|
|
- assembler has full support for the CFI directives. */
|
|
-#if HAVE_GAS_CFI_PERSONALITY_DIRECTIVE
|
|
-#define TARGET_CAN_SPLIT_STACK
|
|
-#endif
|
|
--- a/gcc/config/i386/gnu.h
|
|
+++ b/gcc/config/i386/gnu.h
|
|
@@ -40,11 +40,6 @@ along with GCC. If not, see <http://www.gnu.org/licenses/>.
|
|
/* i386 glibc provides __stack_chk_guard in %gs:0x14. */
|
|
#define TARGET_THREAD_SSP_OFFSET 0x14
|
|
|
|
-/* We only build the -fsplit-stack support in libgcc if the
|
|
- assembler has full support for the CFI directives. */
|
|
-#if HAVE_GAS_CFI_PERSONALITY_DIRECTIVE
|
|
-#define TARGET_CAN_SPLIT_STACK
|
|
-#endif
|
|
/* We steal the last transactional memory word. */
|
|
#define TARGET_THREAD_SPLIT_STACK_OFFSET 0x30
|
|
#endif
|