1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
https://bugs.gentoo.org/822036
https://salsa.debian.org/toolchain-team/gcc/-/blob/master/debian/patches/gcc-distro-specs.diff
From: Sam James <sam@gentoo.org>
Subject: [PATCH] Enable CET (-fcf-protection=full) by default
Needs:
- CET to be enabled for GCC
- -DEXTRA_OPTIONS_CF to be passed during build (via toolchain.eclass).
Only supported on amd64.
--- a/gcc/cp/lang-specs.h
+++ b/gcc/cp/lang-specs.h
@@ -51,7 +51,7 @@ along with GCC; see the file COPYING3. If not see
" %{save-temps*:%b.ii} %{!save-temps*:%g.ii}}"
" %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}"
" %{fmodules-ts:-fmodule-header %{fpreprocessed:-fdirectives-only}}"
- " %(cc1_options) %2"
+ " %(cc1_options) %(default_flag_cf_spec) %2"
" %{!fsyntax-only:"
" %{!S:-o %g.s}"
" %{!fmodule-*:%{!fmodules-*:%{!fdump-ada-spec*:"
@@ -72,7 +72,7 @@ along with GCC; see the file COPYING3. If not see
" %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}"
" %{fmodules-ts:-fmodule-header=system"
" %{fpreprocessed:-fdirectives-only}}"
- " %(cc1_options) %2"
+ " %(cc1_options) %(default_flag_cf_spec) %2"
" %{!fsyntax-only:"
" %{!S:-o %g.s}"
" %{!fmodule-*:%{!fmodules-*:%{!fdump-ada-spec*:"
@@ -92,7 +92,7 @@ along with GCC; see the file COPYING3. If not see
" %{save-temps*:%b.ii} %{!save-temps*:%g.ii}}"
" %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}}"
" %{fmodules-ts:-fmodule-header=user %{fpreprocessed:-fdirectives-only}}"
- " %(cc1_options) %2"
+ " %(cc1_options) %(default_flag_cf_spec) %2"
" %{!fsyntax-only:"
" %{!S:-o %g.s}"
" %{!fmodule-*:%{!fmodules-*:%{!fdump-ada-spec*:"
@@ -107,7 +107,7 @@ along with GCC; see the file COPYING3. If not see
" 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) %(default_flag_cf_spec) %2"
" %{!fsyntax-only:"
" %{fmodule-only:%{!S:-o %g.s%V}}"
" %{!fmodule-only:%(invoke_as)}}"
@@ -116,7 +116,7 @@ along with GCC; see the file COPYING3. If not see
{".ii", "@c++-cpp-output", 0, 0, 0},
{"@c++-cpp-output",
"%{!E:%{!M:%{!MM:"
- " cc1plus -fpreprocessed %i %(cc1_options) %2"
+ " cc1plus -fpreprocessed %i %(cc1_options) %(default_flag_cf_spec) %2"
" %{!fsyntax-only:"
" %{fmodule-only:%{!S:-o %g.s%V}}"
" %{!fmodule-only:%{!fmodule-header*:%(invoke_as)}}}"
--- a/gcc/gcc.cc
+++ b/gcc/gcc.cc
@@ -999,6 +999,18 @@ proper position among the other output files. */
#define LINK_NOW_SPEC ""
#endif
+/* Default value for flag_cf_protection when flag_cf_protection is
+ initialized to CF_FULL.
+
+ We use a new option (EXTRA_OPTIONS_CF) here to avoid turning
+ this on accidentally for other arches. */
+#ifdef EXTRA_OPTIONS_CF
+#define DEFAULT_FLAG_CF_SPEC " %{!m16:%{!m32:%{!fcf-protection*:%{!fno-cf-protection:-fcf-protection}}}}"
+#endif
+#ifndef DEFAULT_FLAG_CF_SPEC
+#define DEFAULT_FLAG_CF_SPEC ""
+#endif
+
#ifdef ENABLE_DEFAULT_PIE
#define PIE_SPEC "!no-pie"
#define NO_FPIE1_SPEC "fno-pie"
@@ -1201,6 +1213,7 @@ static const char *cpp_spec = CPP_SPEC;
static const char *cc1_spec = CC1_SPEC OS_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 *default_flag_cf_spec = DEFAULT_FLAG_CF_SPEC;
static const char *link_ssp_spec = LINK_SSP_SPEC;
static const char *asm_spec = ASM_SPEC;
static const char *asm_final_spec = ASM_FINAL_SPEC;
@@ -1261,7 +1274,7 @@ static const char *cpp_options =
"%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
%{f*} %{g*:%{%:debug-level-gt(0):%{g*}\
%{!fno-working-directory:-fworking-directory}}} %{O*}\
- %{undef} %{save-temps*:-fpch-preprocess}";
+ %{undef} %{save-temps*:-fpch-preprocess} %(default_flag_cf_spec)";
/* Pass -d* flags, possibly modifying -dumpdir, -dumpbase et al.
@@ -1455,9 +1468,9 @@ static const struct compiler default_compilers[] =
%{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)%(default_flag_cf_spec)}\
%{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
- cc1 %(cpp_unique_options) %(cc1_options)}}}\
+ cc1 %(cpp_unique_options) %(cc1_options) %(default_flag_cf_spec)}}}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
{"-",
"%{!E:%e-E or -x required when input is from standard input}\
@@ -1482,7 +1495,7 @@ static const struct compiler default_compilers[] =
%W{o*:--output-pch %w%*}}%{!S:%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) %(default_flag_cf_spec) %{!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},
@@ -1714,6 +1727,7 @@ static struct spec_list static_specs[] =
INIT_STATIC_SPEC ("cc1_options", &cc1_options),
INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
+ INIT_STATIC_SPEC ("default_flag_cf_spec", &default_flag_cf_spec),
INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
INIT_STATIC_SPEC ("endfile", &endfile_spec),
INIT_STATIC_SPEC ("link", &link_spec),
--- a/gcc/objc/lang-specs.h
+++ b/gcc/objc/lang-specs.h
@@ -29,9 +29,9 @@ along with GCC; see the file COPYING3. If not see
%{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) %(default_flag_cf_spec) %{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) %(default_flag_cf_spec) %{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. If not see
%{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) %(default_flag_cf_spec) %{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) %(default_flag_cf_spec) %{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) %(default_flag_cf_spec) %{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) %(default_flag_cf_spec) %{print-objc-runtime-info} %{gen-decls}\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
--- a/gcc/objcp/lang-specs.h
+++ b/gcc/objcp/lang-specs.h
@@ -36,7 +36,7 @@ along with GCC; see the file COPYING3. If not see
%(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) %(default_flag_cf_spec) %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. If not see
%(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) %(default_flag_cf_spec) %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) %(default_flag_cf_spec) %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) %(default_flag_cf_spec) %2\
%{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
|
GitWeb