]>
Commit | Line | Data |
---|---|---|
2b1d2907 PS |
1 | diff -uNr binutils-2.15.94.0.2.2.orig/bfd/elf-bfd.h binutils-2.15.94.0.2.2/bfd/elf-bfd.h |
2 | --- binutils-2.15.94.0.2.2.orig/bfd/elf-bfd.h 2005-02-07 20:42:44.000000000 +0100 | |
3 | +++ binutils-2.15.94.0.2.2/bfd/elf-bfd.h 2005-02-20 13:13:17.362558200 +0100 | |
4 | @@ -1266,6 +1266,9 @@ | |
5 | /* Should the PT_GNU_RELRO segment be emitted? */ | |
6 | bfd_boolean relro; | |
60005366 PS |
7 | |
8 | + /* Segment flags for the PT_PAX_FLAGS segment. */ | |
9 | + unsigned int pax_flags; | |
10 | + | |
11 | /* Symbol version definitions in external objects. */ | |
12 | Elf_Internal_Verdef *verdef; | |
13 | ||
e78d5526 JB |
14 | --- binutils-2.17.50.0.3/bfd/elf.c.orig 2006-07-15 20:23:49.000000000 +0200 |
15 | +++ binutils-2.17.50.0.3/bfd/elf.c 2006-07-17 10:47:54.374440000 +0200 | |
16 | @@ -1101,6 +1101,7 @@ | |
340af3f9 JB |
17 | case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break; |
18 | case PT_GNU_STACK: pt = "STACK"; break; | |
19 | case PT_GNU_RELRO: pt = "RELRO"; break; | |
20 | + case PT_PAX_FLAGS: pt = "PAX_FLAGS"; break; | |
21 | default: pt = NULL; break; | |
22 | } | |
23 | return pt; | |
e78d5526 | 24 | @@ -2662,6 +2663,9 @@ |
0a05c5c3 JB |
25 | case PT_GNU_RELRO: |
26 | return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro"); | |
60005366 PS |
27 | |
28 | + case PT_PAX_FLAGS: | |
29 | + return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "pax_flags"); | |
30 | + | |
31 | default: | |
13ab81d9 PS |
32 | /* Check for any processor-specific program segment types. */ |
33 | bed = get_elf_backend_data (abfd); | |
e78d5526 | 34 | @@ -3633,6 +3637,11 @@ |
60005366 PS |
35 | ++segs; |
36 | } | |
37 | ||
38 | + { | |
39 | + /* We need a PT_PAX_FLAGS segment. */ | |
40 | + ++segs; | |
41 | + } | |
42 | + | |
43 | for (s = abfd->sections; s != NULL; s = s->next) | |
44 | { | |
45 | if ((s->flags & SEC_LOAD) != 0 | |
e78d5526 JB |
46 | @@ -4116,6 +4125,20 @@ |
47 | pm = &m->next; | |
48 | } | |
49 | ||
50 | + { | |
51 | + amt = sizeof (struct elf_segment_map); | |
52 | + m = bfd_zalloc (abfd, amt); | |
53 | + if (m == NULL) | |
54 | + goto error_return; | |
55 | + m->next = NULL; | |
56 | + m->p_type = PT_PAX_FLAGS; | |
57 | + m->p_flags = elf_tdata (abfd)->pax_flags; | |
58 | + m->p_flags_valid = 1; | |
59 | + | |
60 | + *pm = m; | |
61 | + pm = &m->next; | |
62 | + } | |
63 | + | |
64 | free (sections); | |
65 | elf_tdata (abfd)->segment_map = mfirst; | |
66 | } | |
67 | @@ -5228,7 +5251,8 @@ | |
2b1d2907 PS |
68 | 5. PT_GNU_STACK segments do not include any sections. |
69 | 6. PT_TLS segment includes only SHF_TLS sections. | |
13ab81d9 PS |
70 | 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. |
71 | - 8. PT_DYNAMIC should not contain empty sections at the beginning | |
72 | + 8. PT_PAX_FLAGS segments do not include any sections. | |
73 | + 9. PT_DYNAMIC should not contain empty sections at the beginning | |
74 | (with the possible exception of .dynamic). */ | |
2b1d2907 PS |
75 | #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \ |
76 | ((((segment->p_paddr \ | |
e78d5526 | 77 | @@ -5238,6 +5262,7 @@ |
60005366 PS |
78 | || IS_COREFILE_NOTE (segment, section)) \ |
79 | && section->output_section != NULL \ | |
80 | && segment->p_type != PT_GNU_STACK \ | |
81 | + && segment->p_type != PT_PAX_FLAGS \ | |
82 | && (segment->p_type != PT_TLS \ | |
83 | || (section->flags & SEC_THREAD_LOCAL)) \ | |
84 | && (segment->p_type == PT_LOAD \ | |
2b1d2907 PS |
85 | diff -uNr binutils-2.15.94.0.2.2.orig/bfd/elflink.c binutils-2.15.94.0.2.2/bfd/elflink.c |
86 | --- binutils-2.15.94.0.2.2.orig/bfd/elflink.c 2005-02-07 20:42:44.000000000 +0100 | |
87 | +++ binutils-2.15.94.0.2.2/bfd/elflink.c 2005-02-20 13:13:17.432547560 +0100 | |
1be9367e | 88 | @@ -5286,16 +5286,30 @@ |
2b1d2907 | 89 | if (!is_elf_hash_table (info->hash)) |
60005366 PS |
90 | return TRUE; |
91 | ||
92 | + elf_tdata (output_bfd)->pax_flags = PF_NORANDEXEC; | |
93 | + | |
94 | + if (info->execheap) | |
95 | + elf_tdata (output_bfd)->pax_flags |= PF_NOMPROTECT; | |
96 | + else if (info->noexecheap) | |
97 | + elf_tdata (output_bfd)->pax_flags |= PF_MPROTECT; | |
98 | + | |
99 | if (info->execstack) | |
2b1d2907 PS |
100 | - elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X; |
101 | + { | |
102 | + elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X; | |
103 | + elf_tdata (output_bfd)->pax_flags |= PF_EMUTRAMP; | |
104 | + } | |
60005366 | 105 | else if (info->noexecstack) |
2b1d2907 PS |
106 | - elf_tdata (output_bfd)->stack_flags = PF_R | PF_W; |
107 | + { | |
108 | + elf_tdata (output_bfd)->stack_flags = PF_R | PF_W; | |
109 | + elf_tdata (output_bfd)->pax_flags |= PF_NOEMUTRAMP; | |
110 | + } | |
60005366 PS |
111 | else |
112 | { | |
113 | bfd *inputobj; | |
114 | asection *notesec = NULL; | |
115 | int exec = 0; | |
116 | ||
117 | + elf_tdata (output_bfd)->pax_flags |= PF_NOEMUTRAMP; | |
118 | for (inputobj = info->input_bfds; | |
119 | inputobj; | |
120 | inputobj = inputobj->link_next) | |
1be9367e | 121 | @@ -5308,7 +5322,11 @@ |
60005366 PS |
122 | if (s) |
123 | { | |
124 | if (s->flags & SEC_CODE) | |
125 | - exec = PF_X; | |
126 | + { | |
127 | + elf_tdata (output_bfd)->pax_flags &= ~PF_NOEMUTRAMP; | |
128 | + elf_tdata (output_bfd)->pax_flags |= PF_EMUTRAMP; | |
129 | + exec = PF_X; | |
130 | + } | |
131 | notesec = s; | |
132 | } | |
133 | else | |
2b1d2907 PS |
134 | diff -uNr binutils-2.15.94.0.2.2.orig/binutils/readelf.c binutils-2.15.94.0.2.2/binutils/readelf.c |
135 | --- binutils-2.15.94.0.2.2.orig/binutils/readelf.c 2005-02-18 07:14:30.000000000 +0100 | |
136 | +++ binutils-2.15.94.0.2.2/binutils/readelf.c 2005-02-20 13:13:17.470541784 +0100 | |
137 | @@ -2293,6 +2293,7 @@ | |
60005366 | 138 | return "GNU_EH_FRAME"; |
2b1d2907 | 139 | case PT_GNU_STACK: return "GNU_STACK"; |
0a05c5c3 | 140 | case PT_GNU_RELRO: return "GNU_RELRO"; |
60005366 PS |
141 | + case PT_PAX_FLAGS: return "PAX_FLAGS"; |
142 | ||
143 | default: | |
144 | if ((p_type >= PT_LOPROC) && (p_type <= PT_HIPROC)) | |
2b1d2907 PS |
145 | diff -uNr binutils-2.15.94.0.2.2.orig/include/bfdlink.h binutils-2.15.94.0.2.2/include/bfdlink.h |
146 | --- binutils-2.15.94.0.2.2.orig/include/bfdlink.h 2004-11-22 21:33:32.000000000 +0100 | |
147 | +++ binutils-2.15.94.0.2.2/include/bfdlink.h 2005-02-20 13:13:17.476540872 +0100 | |
148 | @@ -313,6 +313,14 @@ | |
60005366 PS |
149 | flags. */ |
150 | unsigned int noexecstack: 1; | |
151 | ||
152 | + /* TRUE if PT_PAX_FLAGS segment should be created with PF_NOMPROTECT | |
153 | + flags. */ | |
154 | + unsigned int execheap: 1; | |
155 | + | |
156 | + /* TRUE if PT_PAX_FLAGS segment should be created with PF_MPROTECT | |
157 | + flags. */ | |
158 | + unsigned int noexecheap: 1; | |
159 | + | |
2b1d2907 PS |
160 | /* TRUE if PT_GNU_RELRO segment should be created. */ |
161 | unsigned int relro: 1; | |
162 | ||
163 | diff -uNr binutils-2.15.94.0.2.2.orig/include/elf/common.h binutils-2.15.94.0.2.2/include/elf/common.h | |
164 | --- binutils-2.15.94.0.2.2.orig/include/elf/common.h 2004-11-22 21:33:32.000000000 +0100 | |
165 | +++ binutils-2.15.94.0.2.2/include/elf/common.h 2005-02-20 13:13:17.482539960 +0100 | |
1be9367e | 166 | @@ -307,12 +307,27 @@ |
0a05c5c3 JB |
167 | #define PT_GNU_STACK (PT_LOOS + 0x474e551) /* Stack flags */ |
168 | #define PT_GNU_RELRO (PT_LOOS + 0x474e552) /* Read-only after relocation */ | |
1be9367e | 169 | #define PT_GNU_SHR (PT_LOOS + 0x474e554) /* Sharable segment */ |
2b1d2907 | 170 | +#define PT_PAX_FLAGS (PT_LOOS + 0x5041580) /* PaX flags */ |
60005366 PS |
171 | |
172 | /* Program segment permissions, in program header p_flags field. */ | |
173 | ||
174 | #define PF_X (1 << 0) /* Segment is executable */ | |
175 | #define PF_W (1 << 1) /* Segment is writable */ | |
176 | #define PF_R (1 << 2) /* Segment is readable */ | |
177 | + | |
178 | +#define PF_PAGEEXEC (1 << 4) /* Enable PAGEEXEC */ | |
179 | +#define PF_NOPAGEEXEC (1 << 5) /* Disable PAGEEXEC */ | |
180 | +#define PF_SEGMEXEC (1 << 6) /* Enable SEGMEXEC */ | |
181 | +#define PF_NOSEGMEXEC (1 << 7) /* Disable SEGMEXEC */ | |
182 | +#define PF_MPROTECT (1 << 8) /* Enable MPROTECT */ | |
183 | +#define PF_NOMPROTECT (1 << 9) /* Disable MPROTECT */ | |
184 | +#define PF_RANDEXEC (1 << 10) /* Enable RANDEXEC */ | |
185 | +#define PF_NORANDEXEC (1 << 11) /* Disable RANDEXEC */ | |
186 | +#define PF_EMUTRAMP (1 << 12) /* Enable EMUTRAMP */ | |
187 | +#define PF_NOEMUTRAMP (1 << 13) /* Disable EMUTRAMP */ | |
188 | +#define PF_RANDMMAP (1 << 14) /* Enable RANDMMAP */ | |
189 | +#define PF_NORANDMMAP (1 << 15) /* Disable RANDMMAP */ | |
190 | + | |
191 | /* #define PF_MASKOS 0x0F000000 *//* OS-specific reserved bits */ | |
192 | #define PF_MASKOS 0x0FF00000 /* New value, Oct 4, 1999 Draft */ | |
193 | #define PF_MASKPROC 0xF0000000 /* Processor-specific reserved bits */ | |
2b1d2907 PS |
194 | diff -uNr binutils-2.15.94.0.2.2.orig/ld/emultempl/elf32.em binutils-2.15.94.0.2.2/ld/emultempl/elf32.em |
195 | --- binutils-2.15.94.0.2.2.orig/ld/emultempl/elf32.em 2004-11-22 21:33:33.000000000 +0100 | |
196 | +++ binutils-2.15.94.0.2.2/ld/emultempl/elf32.em 2005-02-20 13:13:17.492538440 +0100 | |
93b95e8b | 197 | @@ -1859,6 +1859,16 @@ |
2b1d2907 PS |
198 | link_info.noexecstack = TRUE; |
199 | link_info.execstack = FALSE; | |
200 | } | |
93b95e8b | 201 | + else if (strcmp (optarg, "execheap") == 0) |
60005366 PS |
202 | + { |
203 | + link_info.execheap = TRUE; | |
204 | + link_info.noexecheap = FALSE; | |
205 | + } | |
206 | + else if (strcmp (optarg, "noexecheap") == 0) | |
207 | + { | |
208 | + link_info.noexecheap = TRUE; | |
209 | + link_info.execheap = FALSE; | |
210 | + } | |
93b95e8b PS |
211 | EOF |
212 | ||
213 | if test -n "$COMMONPAGESIZE"; then | |
214 | @@ -1925,6 +1935,7 @@ | |
60005366 PS |
215 | fprintf (file, _(" -z combreloc\t\tMerge dynamic relocs into one section and sort\n")); |
216 | fprintf (file, _(" -z defs\t\tReport unresolved symbols in object files.\n")); | |
217 | fprintf (file, _(" -z execstack\t\tMark executable as requiring executable stack\n")); | |
218 | + fprintf (file, _(" -z execheap\t\tMark executable as requiring executable heap\n")); | |
219 | fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n")); | |
220 | fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n")); | |
93b95e8b PS |
221 | fprintf (file, _(" -z lazy\t\tMark object lazy runtime binding (default)\n")); |
222 | @@ -1936,6 +1947,7 @@ | |
223 | fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n")); | |
60005366 PS |
224 | fprintf (file, _(" -z nodlopen\t\tMark DSO not available to dlopen\n")); |
225 | fprintf (file, _(" -z nodump\t\tMark DSO not available to dldump\n")); | |
2b1d2907 | 226 | + fprintf (file, _(" -z noexecheap\tMark executable as not requiring executable heap\n")); |
93b95e8b PS |
227 | fprintf (file, _(" -z noexecstack\tMark executable as not requiring executable stack\n")); |
228 | EOF | |
229 | ||
2b1d2907 PS |
230 | diff -uNr binutils-2.15.94.0.2.2.orig/ld/ldgram.y binutils-2.15.94.0.2.2/ld/ldgram.y |
231 | --- binutils-2.15.94.0.2.2.orig/ld/ldgram.y 2004-11-22 21:33:32.000000000 +0100 | |
232 | +++ binutils-2.15.94.0.2.2/ld/ldgram.y 2005-02-20 13:13:17.499537376 +0100 | |
233 | @@ -1073,6 +1073,8 @@ | |
60005366 PS |
234 | $$ = exp_intop (0x6474e550); |
235 | else if (strcmp (s, "PT_GNU_STACK") == 0) | |
236 | $$ = exp_intop (0x6474e551); | |
237 | + else if (strcmp (s, "PT_PAX_FLAGS") == 0) | |
238 | + $$ = exp_intop (0x65041580); | |
239 | else | |
240 | { | |
241 | einfo (_("\ |