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authorA. Wilcox <AWilcox@Wilcox-Tech.com>2018-02-20 21:53:51 -0600
committerA. Wilcox <AWilcox@Wilcox-Tech.com>2018-02-20 21:54:20 -0600
commit6d7203982c05651f748825deb393eb6480c03e32 (patch)
treef771531d5103dede68a6c9f52b349d8ba04cbb09 /system/gcc/001_all_default-ssp-strong.patch
parent866f81aaa5e438537e6a4b30c1f0fcecc713a1a2 (diff)
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system/gcc: maintain our own toolchain
Diffstat (limited to 'system/gcc/001_all_default-ssp-strong.patch')
-rw-r--r--system/gcc/001_all_default-ssp-strong.patch215
1 files changed, 215 insertions, 0 deletions
diff --git a/system/gcc/001_all_default-ssp-strong.patch b/system/gcc/001_all_default-ssp-strong.patch
new file mode 100644
index 000000000..95949eb00
--- /dev/null
+++ b/system/gcc/001_all_default-ssp-strong.patch
@@ -0,0 +1,215 @@
+# DP: Turn on -fstack-protector by default for C, C++, ObjC, ObjC++.
+# DP: Build libgcc using -fno-stack-protector.
+
+---
+ gcc/Makefile.in | 2 ++
+ gcc/cp/lang-specs.h | 6 +++---
+ gcc/doc/invoke.texi | 4 ++++
+ gcc/gcc.c | 18 ++++++++++++++----
+ gcc/objc/lang-specs.h | 10 +++++-----
+ gcc/objcp/lang-specs.h | 8 ++++----
+ 6 files changed, 32 insertions(+), 16 deletions(-)
+
+Index: b/gcc/gcc.c
+===================================================================
+--- a/gcc/gcc.c
++++ b/gcc/gcc.c
+@@ -858,6 +858,14 @@ proper position among the other output f
+ #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
+ #endif
+
++#ifndef SSP_DEFAULT_SPEC
++#ifdef TARGET_LIBC_PROVIDES_SSP
++#define SSP_DEFAULT_SPEC "%{!fno-stack-protector:%{!fstack-protector-all:%{!ffreestanding:%{!nostdlib:%{!fstack-protector:-fstack-protector-strong}}}}}"
++#else
++#define SSP_DEFAULT_SPEC ""
++#endif
++#endif
++
+ #ifndef LINK_SSP_SPEC
+ #ifdef TARGET_LIBC_PROVIDES_SSP
+ #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
+@@ -1057,6 +1065,7 @@ static const char *cc1_spec = CC1_SPEC;
+ static const char *cc1plus_spec = CC1PLUS_SPEC;
+ static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
+ static const char *link_ssp_spec = LINK_SSP_SPEC;
++static const char *ssp_default_spec = SSP_DEFAULT_SPEC;
+ static const char *asm_spec = ASM_SPEC;
+ static const char *asm_final_spec = ASM_FINAL_SPEC;
+ static const char *link_spec = LINK_SPEC;
+@@ -1112,7 +1121,7 @@ static const char *cpp_unique_options =
+ static const char *cpp_options =
+ "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
+ %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
+- %{undef} %{save-temps*:-fpch-preprocess}";
++ %{undef} %{save-temps*:-fpch-preprocess} %(ssp_default)";
+
+ /* This contains cpp options which are not passed when the preprocessor
+ output will be used by another program. */
+@@ -1301,9 +1310,9 @@ static const struct compiler default_com
+ %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
+ %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
+ cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
+- %(cc1_options)}\
++ %(cc1_options) %(ssp_default)}\
+ %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
+- cc1 %(cpp_unique_options) %(cc1_options)}}}\
++ cc1 %(cpp_unique_options) %(cc1_options) %(ssp_default)}}}\
+ %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
+ {"-",
+ "%{!E:%e-E or -x required when input is from standard input}\
+@@ -1328,7 +1337,7 @@ static const struct compiler default_com
+ %W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0},
+ {".i", "@cpp-output", 0, 0, 0},
+ {"@cpp-output",
+- "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
++ "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %(ssp_default) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+ {".s", "@assembler", 0, 0, 0},
+ {"@assembler",
+ "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
+@@ -1560,6 +1569,7 @@ static struct spec_list static_specs[] =
+ INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
+ INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
+ INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
++ INIT_STATIC_SPEC ("ssp_default", &ssp_default_spec),
+ INIT_STATIC_SPEC ("endfile", &endfile_spec),
+ INIT_STATIC_SPEC ("link", &link_spec),
+ INIT_STATIC_SPEC ("lib", &lib_spec),
+Index: b/gcc/cp/lang-specs.h
+===================================================================
+--- a/gcc/cp/lang-specs.h
++++ b/gcc/cp/lang-specs.h
+@@ -46,7 +46,7 @@ along with GCC; see the file COPYING3.
+ %(cpp_options) %2 -o %{save-temps*:%b.ii} %{!save-temps*:%g.ii} \n}\
+ cc1plus %{save-temps*|no-integrated-cpp:-fpreprocessed %{save-temps*:%b.ii} %{!save-temps*:%g.ii}}\
+ %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}\
+- %(cc1_options) %2\
++ %(cc1_options) %(ssp_default) %2\
+ %{!fsyntax-only:-o %g.s \
+ %{!fdump-ada-spec*:%{!o*:--output-pch=%i.gch}\
+ %W{o*:--output-pch=%*}}%V}}}}",
+@@ -58,11 +58,11 @@ along with GCC; see the file COPYING3.
+ %(cpp_options) %2 -o %{save-temps*:%b.ii} %{!save-temps*:%g.ii} \n}\
+ cc1plus %{save-temps*|no-integrated-cpp:-fpreprocessed %{save-temps*:%b.ii} %{!save-temps*:%g.ii}}\
+ %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}\
+- %(cc1_options) %2\
++ %(cc1_options) %(ssp_default) %2\
+ %{!fsyntax-only:%(invoke_as)}}}}",
+ CPLUSPLUS_CPP_SPEC, 0, 0},
+ {".ii", "@c++-cpp-output", 0, 0, 0},
+ {"@c++-cpp-output",
+ "%{!M:%{!MM:%{!E:\
+- cc1plus -fpreprocessed %i %(cc1_options) %2\
++ cc1plus -fpreprocessed %i %(cc1_options) %(ssp_default) %2\
+ %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+Index: b/gcc/params.def
+===================================================================
+--- a/gcc/params.def
++++ b/gcc/params.def
+@@ -673,7 +673,7 @@ DEFPARAM (PARAM_INTEGER_SHARE_LIMIT,
+ DEFPARAM (PARAM_SSP_BUFFER_SIZE,
+ "ssp-buffer-size",
+ "The lower bound for a buffer to be considered for stack smashing protection.",
+- 8, 1, 0)
++ 4, 1, 0)
+
+ DEFPARAM (PARAM_MIN_SIZE_FOR_STACK_SHARING,
+ "min-size-for-stack-sharing",
+Index: b/gcc/objc/lang-specs.h
+===================================================================
+--- a/gcc/objc/lang-specs.h
++++ b/gcc/objc/lang-specs.h
+@@ -29,9 +29,9 @@ along with GCC; see the file COPYING3.
+ %{traditional|traditional-cpp:\
+ %eGNU Objective C no longer supports traditional compilation}\
+ %{save-temps*|no-integrated-cpp:cc1obj -E %(cpp_options) -o %{save-temps*:%b.mi} %{!save-temps*:%g.mi} \n\
+- cc1obj -fpreprocessed %{save-temps*:%b.mi} %{!save-temps*:%g.mi} %(cc1_options) %{print-objc-runtime-info} %{gen-decls}}\
++ cc1obj -fpreprocessed %{save-temps*:%b.mi} %{!save-temps*:%g.mi} %(cc1_options) %(ssp_default) %{print-objc-runtime-info} %{gen-decls}}\
+ %{!save-temps*:%{!no-integrated-cpp:\
+- cc1obj %(cpp_unique_options) %(cc1_options) %{print-objc-runtime-info} %{gen-decls}}}\
++ cc1obj %(cpp_unique_options) %(cc1_options) %(ssp_default) %{print-objc-runtime-info} %{gen-decls}}}\
+ %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+ {"@objective-c-header",
+ "%{E|M|MM:cc1obj -E %{traditional|traditional-cpp:-traditional-cpp}\
+@@ -40,18 +40,18 @@ along with GCC; see the file COPYING3.
+ %{traditional|traditional-cpp:\
+ %eGNU Objective C no longer supports traditional compilation}\
+ %{save-temps*|no-integrated-cpp:cc1obj -E %(cpp_options) -o %{save-temps*:%b.mi} %{!save-temps*:%g.mi} \n\
+- cc1obj -fpreprocessed %b.mi %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
++ cc1obj -fpreprocessed %b.mi %(cc1_options) %(ssp_default) %{print-objc-runtime-info} %{gen-decls}\
+ -o %g.s %{!o*:--output-pch=%i.gch}\
+ %W{o*:--output-pch=%*}%V}\
+ %{!save-temps*:%{!no-integrated-cpp:\
+- cc1obj %(cpp_unique_options) %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
++ cc1obj %(cpp_unique_options) %(cc1_options) %(ssp_default) %{print-objc-runtime-info} %{gen-decls}\
+ -o %g.s %{!o*:--output-pch=%i.gch}\
+ %W{o*:--output-pch=%*}%V}}}}}", 0, 0, 0},
+ {".mi", "@objective-c-cpp-output", 0, 0, 0},
+ {"@objective-c-cpp-output",
+- "%{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
++ "%{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %(ssp_default) %{print-objc-runtime-info} %{gen-decls}\
+ %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+ {"@objc-cpp-output",
+ "%nobjc-cpp-output is deprecated; please use objective-c-cpp-output instead\n\
+- %{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %{print-objc-runtime-info} %{gen-decls}\
++ %{!M:%{!MM:%{!E:cc1obj -fpreprocessed %i %(cc1_options) %(ssp_default) %{print-objc-runtime-info} %{gen-decls}\
+ %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+Index: b/gcc/objcp/lang-specs.h
+===================================================================
+--- a/gcc/objcp/lang-specs.h
++++ b/gcc/objcp/lang-specs.h
+@@ -36,7 +36,7 @@ along with GCC; see the file COPYING3.
+ %(cpp_options) %2 -o %{save-temps*:%b.mii} %{!save-temps*:%g.mii} \n}\
+ cc1objplus %{save-temps*|no-integrated-cpp:-fpreprocessed %{save-temps*:%b.mii} %{!save-temps*:%g.mii}}\
+ %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}\
+- %(cc1_options) %2\
++ %(cc1_options) %(ssp_default) %2\
+ -o %g.s %{!o*:--output-pch=%i.gch} %W{o*:--output-pch=%*}%V}}}",
+ CPLUSPLUS_CPP_SPEC, 0, 0},
+ {"@objective-c++",
+@@ -46,16 +46,16 @@ along with GCC; see the file COPYING3.
+ %(cpp_options) %2 -o %{save-temps*:%b.mii} %{!save-temps*:%g.mii} \n}\
+ cc1objplus %{save-temps*|no-integrated-cpp:-fpreprocessed %{save-temps*:%b.mii} %{!save-temps*:%g.mii}}\
+ %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}\
+- %(cc1_options) %2\
++ %(cc1_options) %(ssp_default) %2\
+ %{!fsyntax-only:%(invoke_as)}}}}",
+ CPLUSPLUS_CPP_SPEC, 0, 0},
+ {".mii", "@objective-c++-cpp-output", 0, 0, 0},
+ {"@objective-c++-cpp-output",
+ "%{!M:%{!MM:%{!E:\
+- cc1objplus -fpreprocessed %i %(cc1_options) %2\
++ cc1objplus -fpreprocessed %i %(cc1_options) %(ssp_default) %2\
+ %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+ {"@objc++-cpp-output",
+ "%nobjc++-cpp-output is deprecated; please use objective-c++-cpp-output instead\n\
+ %{!M:%{!MM:%{!E:\
+- cc1objplus -fpreprocessed %i %(cc1_options) %2\
++ cc1objplus -fpreprocessed %i %(cc1_options) %(ssp_default) %2\
+ %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+Index: b/gcc/doc/invoke.texi
+===================================================================
+--- a/gcc/doc/invoke.texi
++++ b/gcc/doc/invoke.texi
+@@ -9247,6 +9247,9 @@
+ The minimum size of variables taking part in stack slot sharing when not
+ optimizing. The default value is 32.
+
++The Alpine Linux default is "4", to increase
++the number of functions protected by the stack protector.
++
+ @item max-jump-thread-duplication-stmts
+ Maximum number of statements allowed in a block that needs to be
+ duplicated when threading jumps.
+@@ -10185,6 +10188,11 @@
+ Like @option{-fstack-protector} but includes additional functions to
+ be protected --- those that have local array definitions, or have
+ references to local frame addresses.
++
++NOTE: In Alpine Linux,
++@option{-fstack-protector-strong} is enabled by default for C,
++C++, ObjC, ObjC++, if none of @option{-fno-stack-protector},
++@option{-nostdlib}, nor @option{-ffreestanding} are found.
+
+ @item -fstack-protector-explicit
+ @opindex fstack-protector-explicit