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1 | 831b7825 | ths | /*
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2 | 831b7825 | ths | * Mach-O object file loading
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3 | 831b7825 | ths | *
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4 | 831b7825 | ths | * Copyright (c) 2006 Pierre d'Herbemont
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5 | 831b7825 | ths | *
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6 | 831b7825 | ths | * This library is free software; you can redistribute it and/or
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7 | 831b7825 | ths | * modify it under the terms of the GNU Lesser General Public
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8 | 831b7825 | ths | * License as published by the Free Software Foundation; either
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9 | 831b7825 | ths | * version 2 of the License, or (at your option) any later version.
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10 | 831b7825 | ths | *
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11 | 831b7825 | ths | * This library is distributed in the hope that it will be useful,
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12 | 831b7825 | ths | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 831b7825 | ths | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 831b7825 | ths | * Lesser General Public License for more details.
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15 | 831b7825 | ths | *
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16 | 831b7825 | ths | * You should have received a copy of the GNU Lesser General Public
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17 | 831b7825 | ths | * License along with this library; if not, write to the Free Software
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18 | 831b7825 | ths | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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19 | 831b7825 | ths | */
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20 | 831b7825 | ths | #include <stdio.h> |
21 | 831b7825 | ths | #include <sys/types.h> |
22 | 831b7825 | ths | #include <fcntl.h> |
23 | 831b7825 | ths | #include <sys/stat.h> |
24 | 831b7825 | ths | #include <errno.h> |
25 | 831b7825 | ths | #include <unistd.h> |
26 | 831b7825 | ths | #include <sys/mman.h> |
27 | 831b7825 | ths | #include <stdlib.h> |
28 | 831b7825 | ths | #include <string.h> |
29 | 831b7825 | ths | |
30 | 831b7825 | ths | #include "qemu.h" |
31 | 831b7825 | ths | #include "disas.h" |
32 | 831b7825 | ths | |
33 | 831b7825 | ths | #include <mach-o/loader.h> |
34 | 831b7825 | ths | #include <mach-o/fat.h> |
35 | 831b7825 | ths | #include <mach-o/nlist.h> |
36 | 831b7825 | ths | #include <mach-o/reloc.h> |
37 | 831b7825 | ths | #include <mach-o/ppc/reloc.h> |
38 | 831b7825 | ths | |
39 | 831b7825 | ths | //#define DEBUG_MACHLOAD
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40 | 831b7825 | ths | |
41 | 831b7825 | ths | #ifdef DEBUG_MACHLOAD
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42 | 831b7825 | ths | # define DPRINTF(...) do { if(loglevel) fprintf(logfile, __VA_ARGS__); printf(__VA_ARGS__); } while(0) |
43 | 831b7825 | ths | #else
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44 | 831b7825 | ths | # define DPRINTF(...) do { if(loglevel) fprintf(logfile, __VA_ARGS__); } while(0) |
45 | 831b7825 | ths | #endif
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46 | 831b7825 | ths | |
47 | 831b7825 | ths | # define check_mach_header(x) (x.magic == MH_CIGAM)
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48 | 831b7825 | ths | |
49 | 831b7825 | ths | extern const char *interp_prefix; |
50 | 831b7825 | ths | |
51 | 831b7825 | ths | /* we don't have a good implementation for this */
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52 | 831b7825 | ths | #define DONT_USE_DYLD_SHARED_MAP
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53 | 831b7825 | ths | |
54 | 831b7825 | ths | /* Pass extra arg to DYLD for debug */
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55 | 831b7825 | ths | //#define ACTIVATE_DYLD_TRACE
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56 | 831b7825 | ths | |
57 | 831b7825 | ths | //#define OVERRIDE_DYLINKER
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58 | 831b7825 | ths | |
59 | 831b7825 | ths | #ifdef OVERRIDE_DYLINKER
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60 | 831b7825 | ths | # ifdef TARGET_I386
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61 | 831b7825 | ths | # define DYLINKER_NAME "/Users/steg/qemu/tests/i386-darwin-env/usr/lib/dyld" |
62 | 831b7825 | ths | # else
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63 | 831b7825 | ths | # define DYLINKER_NAME "/usr/lib/dyld" |
64 | 831b7825 | ths | # endif
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65 | 831b7825 | ths | #endif
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66 | 831b7825 | ths | |
67 | 831b7825 | ths | /* XXX: in an include */
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68 | 831b7825 | ths | struct nlist_extended
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69 | 831b7825 | ths | { |
70 | 831b7825 | ths | union {
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71 | 831b7825 | ths | char *n_name;
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72 | 831b7825 | ths | long n_strx;
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73 | 831b7825 | ths | } n_un; |
74 | 831b7825 | ths | unsigned char n_type; |
75 | 831b7825 | ths | unsigned char n_sect; |
76 | 831b7825 | ths | short st_desc;
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77 | 831b7825 | ths | unsigned long st_value; |
78 | 831b7825 | ths | unsigned long st_size; |
79 | 831b7825 | ths | }; |
80 | 831b7825 | ths | |
81 | 831b7825 | ths | /* Print symbols in gdb */
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82 | 831b7825 | ths | void *macho_text_sect = 0; |
83 | 831b7825 | ths | int macho_offset = 0; |
84 | 831b7825 | ths | |
85 | 831b7825 | ths | int load_object(const char *filename, struct target_pt_regs * regs, void ** mh); |
86 | 831b7825 | ths | void qerror(const char *format, ...); |
87 | 831b7825 | ths | #ifdef TARGET_I386
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88 | 831b7825 | ths | typedef struct mach_i386_thread_state { |
89 | 831b7825 | ths | unsigned int eax; |
90 | 831b7825 | ths | unsigned int ebx; |
91 | 831b7825 | ths | unsigned int ecx; |
92 | 831b7825 | ths | unsigned int edx; |
93 | 831b7825 | ths | unsigned int edi; |
94 | 831b7825 | ths | unsigned int esi; |
95 | 831b7825 | ths | unsigned int ebp; |
96 | 831b7825 | ths | unsigned int esp; |
97 | 831b7825 | ths | unsigned int ss; |
98 | 831b7825 | ths | unsigned int eflags; |
99 | 831b7825 | ths | unsigned int eip; |
100 | 831b7825 | ths | unsigned int cs; |
101 | 831b7825 | ths | unsigned int ds; |
102 | 831b7825 | ths | unsigned int es; |
103 | 831b7825 | ths | unsigned int fs; |
104 | 831b7825 | ths | unsigned int gs; |
105 | 831b7825 | ths | } mach_i386_thread_state_t; |
106 | 831b7825 | ths | |
107 | 831b7825 | ths | void bswap_i386_thread_state(struct mach_i386_thread_state *ts) |
108 | 831b7825 | ths | { |
109 | 831b7825 | ths | bswap32s((uint32_t*)&ts->eax); |
110 | 831b7825 | ths | bswap32s((uint32_t*)&ts->ebx); |
111 | 831b7825 | ths | bswap32s((uint32_t*)&ts->ecx); |
112 | 831b7825 | ths | bswap32s((uint32_t*)&ts->edx); |
113 | 831b7825 | ths | bswap32s((uint32_t*)&ts->edi); |
114 | 831b7825 | ths | bswap32s((uint32_t*)&ts->esi); |
115 | 831b7825 | ths | bswap32s((uint32_t*)&ts->ebp); |
116 | 831b7825 | ths | bswap32s((uint32_t*)&ts->esp); |
117 | 831b7825 | ths | bswap32s((uint32_t*)&ts->ss); |
118 | 831b7825 | ths | bswap32s((uint32_t*)&ts->eflags); |
119 | 831b7825 | ths | bswap32s((uint32_t*)&ts->eip); |
120 | 831b7825 | ths | bswap32s((uint32_t*)&ts->cs); |
121 | 831b7825 | ths | bswap32s((uint32_t*)&ts->ds); |
122 | 831b7825 | ths | bswap32s((uint32_t*)&ts->es); |
123 | 831b7825 | ths | bswap32s((uint32_t*)&ts->fs); |
124 | 831b7825 | ths | bswap32s((uint32_t*)&ts->gs); |
125 | 831b7825 | ths | } |
126 | 831b7825 | ths | #define target_thread_state mach_i386_thread_state
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127 | 831b7825 | ths | #define TARGET_CPU_TYPE CPU_TYPE_I386
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128 | 831b7825 | ths | #define TARGET_CPU_NAME "i386" |
129 | 831b7825 | ths | #endif
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130 | 831b7825 | ths | |
131 | 831b7825 | ths | #ifdef TARGET_PPC
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132 | 831b7825 | ths | struct mach_ppc_thread_state {
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133 | 831b7825 | ths | unsigned int srr0; /* Instruction address register (PC) */ |
134 | 831b7825 | ths | unsigned int srr1; /* Machine state register (supervisor) */ |
135 | 831b7825 | ths | unsigned int r0; |
136 | 831b7825 | ths | unsigned int r1; |
137 | 831b7825 | ths | unsigned int r2; |
138 | 831b7825 | ths | unsigned int r3; |
139 | 831b7825 | ths | unsigned int r4; |
140 | 831b7825 | ths | unsigned int r5; |
141 | 831b7825 | ths | unsigned int r6; |
142 | 831b7825 | ths | unsigned int r7; |
143 | 831b7825 | ths | unsigned int r8; |
144 | 831b7825 | ths | unsigned int r9; |
145 | 831b7825 | ths | unsigned int r10; |
146 | 831b7825 | ths | unsigned int r11; |
147 | 831b7825 | ths | unsigned int r12; |
148 | 831b7825 | ths | unsigned int r13; |
149 | 831b7825 | ths | unsigned int r14; |
150 | 831b7825 | ths | unsigned int r15; |
151 | 831b7825 | ths | unsigned int r16; |
152 | 831b7825 | ths | unsigned int r17; |
153 | 831b7825 | ths | unsigned int r18; |
154 | 831b7825 | ths | unsigned int r19; |
155 | 831b7825 | ths | unsigned int r20; |
156 | 831b7825 | ths | unsigned int r21; |
157 | 831b7825 | ths | unsigned int r22; |
158 | 831b7825 | ths | unsigned int r23; |
159 | 831b7825 | ths | unsigned int r24; |
160 | 831b7825 | ths | unsigned int r25; |
161 | 831b7825 | ths | unsigned int r26; |
162 | 831b7825 | ths | unsigned int r27; |
163 | 831b7825 | ths | unsigned int r28; |
164 | 831b7825 | ths | unsigned int r29; |
165 | 831b7825 | ths | unsigned int r30; |
166 | 831b7825 | ths | unsigned int r31; |
167 | 831b7825 | ths | |
168 | 831b7825 | ths | unsigned int cr; /* Condition register */ |
169 | 831b7825 | ths | unsigned int xer; /* User's integer exception register */ |
170 | 831b7825 | ths | unsigned int lr; /* Link register */ |
171 | 831b7825 | ths | unsigned int ctr; /* Count register */ |
172 | 831b7825 | ths | unsigned int mq; /* MQ register (601 only) */ |
173 | 831b7825 | ths | |
174 | 831b7825 | ths | unsigned int vrsave; /* Vector Save Register */ |
175 | 831b7825 | ths | }; |
176 | 831b7825 | ths | |
177 | 831b7825 | ths | void bswap_ppc_thread_state(struct mach_ppc_thread_state *ts) |
178 | 831b7825 | ths | { |
179 | 831b7825 | ths | bswap32s((uint32_t*)&ts->srr0); |
180 | 831b7825 | ths | bswap32s((uint32_t*)&ts->srr1); |
181 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r0); |
182 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r1); |
183 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r2); |
184 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r3); |
185 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r4); |
186 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r5); |
187 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r6); |
188 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r7); |
189 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r8); |
190 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r9); |
191 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r10); |
192 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r11); |
193 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r12); |
194 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r13); |
195 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r14); |
196 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r15); |
197 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r16); |
198 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r17); |
199 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r18); |
200 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r19); |
201 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r20); |
202 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r21); |
203 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r22); |
204 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r23); |
205 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r24); |
206 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r25); |
207 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r26); |
208 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r27); |
209 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r28); |
210 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r29); |
211 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r30); |
212 | 831b7825 | ths | bswap32s((uint32_t*)&ts->r31); |
213 | 831b7825 | ths | |
214 | 831b7825 | ths | bswap32s((uint32_t*)&ts->cr); |
215 | 831b7825 | ths | bswap32s((uint32_t*)&ts->xer); |
216 | 831b7825 | ths | bswap32s((uint32_t*)&ts->lr); |
217 | 831b7825 | ths | bswap32s((uint32_t*)&ts->ctr); |
218 | 831b7825 | ths | bswap32s((uint32_t*)&ts->mq); |
219 | 831b7825 | ths | |
220 | 831b7825 | ths | bswap32s((uint32_t*)&ts->vrsave); |
221 | 831b7825 | ths | } |
222 | 831b7825 | ths | |
223 | 831b7825 | ths | #define target_thread_state mach_ppc_thread_state
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224 | 831b7825 | ths | #define TARGET_CPU_TYPE CPU_TYPE_POWERPC
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225 | 831b7825 | ths | #define TARGET_CPU_NAME "PowerPC" |
226 | 831b7825 | ths | #endif
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227 | 831b7825 | ths | |
228 | 831b7825 | ths | struct target_thread_command {
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229 | 831b7825 | ths | unsigned long cmd; /* LC_THREAD or LC_UNIXTHREAD */ |
230 | 831b7825 | ths | unsigned long cmdsize; /* total size of this command */ |
231 | 831b7825 | ths | unsigned long flavor; /* flavor of thread state */ |
232 | 831b7825 | ths | unsigned long count; /* count of longs in thread state */ |
233 | 831b7825 | ths | struct target_thread_state state; /* thread state for this flavor */ |
234 | 831b7825 | ths | }; |
235 | 831b7825 | ths | |
236 | 831b7825 | ths | void bswap_tc(struct target_thread_command *tc) |
237 | 831b7825 | ths | { |
238 | 831b7825 | ths | bswap32s((uint32_t*)(&tc->flavor)); |
239 | 831b7825 | ths | bswap32s((uint32_t*)&tc->count); |
240 | 831b7825 | ths | #if defined(TARGET_I386)
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241 | 831b7825 | ths | bswap_i386_thread_state(&tc->state); |
242 | 831b7825 | ths | #elif defined(TARGET_PPC)
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243 | 831b7825 | ths | bswap_ppc_thread_state(&tc->state); |
244 | 831b7825 | ths | #else
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245 | 831b7825 | ths | # error unknown TARGET_CPU_TYPE
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246 | 831b7825 | ths | #endif
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247 | 831b7825 | ths | } |
248 | 831b7825 | ths | |
249 | 831b7825 | ths | void bswap_mh(struct mach_header *mh) |
250 | 831b7825 | ths | { |
251 | 831b7825 | ths | bswap32s((uint32_t*)(&mh->magic)); |
252 | 831b7825 | ths | bswap32s((uint32_t*)&mh->cputype); |
253 | 831b7825 | ths | bswap32s((uint32_t*)&mh->cpusubtype); |
254 | 831b7825 | ths | bswap32s((uint32_t*)&mh->filetype); |
255 | 831b7825 | ths | bswap32s((uint32_t*)&mh->ncmds); |
256 | 831b7825 | ths | bswap32s((uint32_t*)&mh->sizeofcmds); |
257 | 831b7825 | ths | bswap32s((uint32_t*)&mh->flags); |
258 | 831b7825 | ths | } |
259 | 831b7825 | ths | |
260 | 831b7825 | ths | void bswap_lc(struct load_command *lc) |
261 | 831b7825 | ths | { |
262 | 831b7825 | ths | bswap32s((uint32_t*)&lc->cmd); |
263 | 831b7825 | ths | bswap32s((uint32_t*)&lc->cmdsize); |
264 | 831b7825 | ths | } |
265 | 831b7825 | ths | |
266 | 831b7825 | ths | |
267 | 831b7825 | ths | void bswap_fh(struct fat_header *fh) |
268 | 831b7825 | ths | { |
269 | 831b7825 | ths | bswap32s((uint32_t*)&fh->magic); |
270 | 831b7825 | ths | bswap32s((uint32_t*)&fh->nfat_arch); |
271 | 831b7825 | ths | } |
272 | 831b7825 | ths | |
273 | 831b7825 | ths | void bswap_fa(struct fat_arch *fa) |
274 | 831b7825 | ths | { |
275 | 831b7825 | ths | bswap32s((uint32_t*)&fa->cputype); |
276 | 831b7825 | ths | bswap32s((uint32_t*)&fa->cpusubtype); |
277 | 831b7825 | ths | bswap32s((uint32_t*)&fa->offset); |
278 | 831b7825 | ths | bswap32s((uint32_t*)&fa->size); |
279 | 831b7825 | ths | bswap32s((uint32_t*)&fa->align); |
280 | 831b7825 | ths | } |
281 | 831b7825 | ths | |
282 | 831b7825 | ths | void bswap_segcmd(struct segment_command *sc) |
283 | 831b7825 | ths | { |
284 | 831b7825 | ths | bswap32s((uint32_t*)&sc->vmaddr); |
285 | 831b7825 | ths | bswap32s((uint32_t*)&sc->vmsize); |
286 | 831b7825 | ths | bswap32s((uint32_t*)&sc->fileoff); |
287 | 831b7825 | ths | bswap32s((uint32_t*)&sc->filesize); |
288 | 831b7825 | ths | bswap32s((uint32_t*)&sc->maxprot); |
289 | 831b7825 | ths | bswap32s((uint32_t*)&sc->initprot); |
290 | 831b7825 | ths | bswap32s((uint32_t*)&sc->nsects); |
291 | 831b7825 | ths | bswap32s((uint32_t*)&sc->flags); |
292 | 831b7825 | ths | } |
293 | 831b7825 | ths | |
294 | 831b7825 | ths | void bswap_symtabcmd(struct symtab_command *stc) |
295 | 831b7825 | ths | { |
296 | 831b7825 | ths | bswap32s((uint32_t*)&stc->cmd); |
297 | 831b7825 | ths | bswap32s((uint32_t*)&stc->cmdsize); |
298 | 831b7825 | ths | bswap32s((uint32_t*)&stc->symoff); |
299 | 831b7825 | ths | bswap32s((uint32_t*)&stc->nsyms); |
300 | 831b7825 | ths | bswap32s((uint32_t*)&stc->stroff); |
301 | 831b7825 | ths | bswap32s((uint32_t*)&stc->strsize); |
302 | 831b7825 | ths | } |
303 | 831b7825 | ths | |
304 | 831b7825 | ths | void bswap_sym(struct nlist *n) |
305 | 831b7825 | ths | { |
306 | 831b7825 | ths | bswap32s((uint32_t*)&n->n_un.n_strx); |
307 | 831b7825 | ths | bswap16s((uint16_t*)&n->n_desc); |
308 | 831b7825 | ths | bswap32s((uint32_t*)&n->n_value); |
309 | 831b7825 | ths | } |
310 | 831b7825 | ths | |
311 | 831b7825 | ths | int load_thread(struct mach_header *mh, struct target_thread_command *tc, struct target_pt_regs * regs, int fd, int mh_pos, int need_bswap) |
312 | 831b7825 | ths | { |
313 | 831b7825 | ths | int entry;
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314 | 831b7825 | ths | if(need_bswap)
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315 | 831b7825 | ths | bswap_tc(tc); |
316 | 831b7825 | ths | #if defined(TARGET_I386)
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317 | 831b7825 | ths | entry = tc->state.eip; |
318 | 831b7825 | ths | DPRINTF(" eax 0x%.8x\n ebx 0x%.8x\n ecx 0x%.8x\n edx 0x%.8x\n edi 0x%.8x\n esi 0x%.8x\n ebp 0x%.8x\n esp 0x%.8x\n ss 0x%.8x\n eflags 0x%.8x\n eip 0x%.8x\n cs 0x%.8x\n ds 0x%.8x\n es 0x%.8x\n fs 0x%.8x\n gs 0x%.8x\n",
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319 | 831b7825 | ths | tc->state.eax, tc->state.ebx, tc->state.ecx, tc->state.edx, tc->state.edi, tc->state.esi, tc->state.ebp, |
320 | 831b7825 | ths | tc->state.esp, tc->state.ss, tc->state.eflags, tc->state.eip, tc->state.cs, tc->state.ds, tc->state.es, |
321 | 831b7825 | ths | tc->state.fs, tc->state.gs ); |
322 | 831b7825 | ths | #define reg_copy(reg) regs->reg = tc->state.reg
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323 | 831b7825 | ths | if(regs)
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324 | 831b7825 | ths | { |
325 | 831b7825 | ths | reg_copy(eax); |
326 | 831b7825 | ths | reg_copy(ebx); |
327 | 831b7825 | ths | reg_copy(ecx); |
328 | 831b7825 | ths | reg_copy(edx); |
329 | 831b7825 | ths | |
330 | 831b7825 | ths | reg_copy(edi); |
331 | 831b7825 | ths | reg_copy(esi); |
332 | 831b7825 | ths | |
333 | 831b7825 | ths | reg_copy(ebp); |
334 | 831b7825 | ths | reg_copy(esp); |
335 | 831b7825 | ths | |
336 | 831b7825 | ths | reg_copy(eflags); |
337 | 831b7825 | ths | reg_copy(eip); |
338 | 831b7825 | ths | /*
|
339 | 831b7825 | ths | reg_copy(ss);
|
340 | 831b7825 | ths | reg_copy(cs);
|
341 | 831b7825 | ths | reg_copy(ds);
|
342 | 831b7825 | ths | reg_copy(es);
|
343 | 831b7825 | ths | reg_copy(fs);
|
344 | 831b7825 | ths | reg_copy(gs);*/
|
345 | 831b7825 | ths | } |
346 | 831b7825 | ths | #undef reg_copy
|
347 | 831b7825 | ths | #elif defined(TARGET_PPC)
|
348 | 831b7825 | ths | entry = tc->state.srr0; |
349 | 831b7825 | ths | #endif
|
350 | 831b7825 | ths | DPRINTF("load_thread: entry 0x%x\n", entry);
|
351 | 831b7825 | ths | return entry;
|
352 | 831b7825 | ths | } |
353 | 831b7825 | ths | |
354 | 831b7825 | ths | int load_dylinker(struct mach_header *mh, struct dylinker_command *dc, int fd, int mh_pos, int need_bswap) |
355 | 831b7825 | ths | { |
356 | 831b7825 | ths | int size;
|
357 | 831b7825 | ths | char * dylinker_name;
|
358 | 831b7825 | ths | size = dc->cmdsize - sizeof(struct dylinker_command); |
359 | 831b7825 | ths | |
360 | 831b7825 | ths | if(need_bswap)
|
361 | 831b7825 | ths | dylinker_name = (char*)(bswap_32(dc->name.offset)+(int)dc); |
362 | 831b7825 | ths | else
|
363 | 831b7825 | ths | dylinker_name = (char*)((dc->name.offset)+(int)dc); |
364 | 831b7825 | ths | |
365 | 831b7825 | ths | #ifdef OVERRIDE_DYLINKER
|
366 | 831b7825 | ths | dylinker_name = DYLINKER_NAME; |
367 | 831b7825 | ths | #else
|
368 | 831b7825 | ths | if(asprintf(&dylinker_name, "%s%s", interp_prefix, dylinker_name) == -1) |
369 | 831b7825 | ths | qerror("can't allocate the new dylinker name\n");
|
370 | 831b7825 | ths | #endif
|
371 | 831b7825 | ths | |
372 | 831b7825 | ths | DPRINTF("dylinker_name %s\n", dylinker_name);
|
373 | 831b7825 | ths | return load_object(dylinker_name, NULL, NULL); |
374 | 831b7825 | ths | } |
375 | 831b7825 | ths | |
376 | 831b7825 | ths | int load_segment(struct mach_header *mh, struct segment_command *sc, int fd, int mh_pos, int need_bswap, int fixed, int slide) |
377 | 831b7825 | ths | { |
378 | 831b7825 | ths | unsigned long addr = sc->vmaddr; |
379 | 831b7825 | ths | unsigned long size = sc->filesize; |
380 | 831b7825 | ths | unsigned long error = 0; |
381 | 831b7825 | ths | |
382 | 831b7825 | ths | if(need_bswap)
|
383 | 831b7825 | ths | bswap_segcmd(sc); |
384 | 831b7825 | ths | |
385 | 831b7825 | ths | if(sc->vmaddr == 0) |
386 | 831b7825 | ths | { |
387 | 831b7825 | ths | DPRINTF("load_segment: sc->vmaddr == 0 returning\n");
|
388 | 831b7825 | ths | return -1; |
389 | 831b7825 | ths | } |
390 | 831b7825 | ths | |
391 | 831b7825 | ths | if (strcmp(sc->segname, "__PAGEZERO") == 0) |
392 | 831b7825 | ths | { |
393 | 831b7825 | ths | DPRINTF("load_segment: __PAGEZERO returning\n");
|
394 | 831b7825 | ths | return -1; |
395 | 831b7825 | ths | } |
396 | 831b7825 | ths | |
397 | 831b7825 | ths | /* Right now mmap memory */
|
398 | 831b7825 | ths | /* XXX: should check to see that the space is free, because MAP_FIXED is dangerous */
|
399 | 831b7825 | ths | DPRINTF("load_segment: mmaping %s to 0x%x-(0x%x|0x%x) + 0x%x\n", sc->segname, sc->vmaddr, sc->filesize, sc->vmsize, slide);
|
400 | 831b7825 | ths | |
401 | 831b7825 | ths | if(sc->filesize > 0) |
402 | 831b7825 | ths | { |
403 | 831b7825 | ths | int opt = 0; |
404 | 831b7825 | ths | |
405 | 831b7825 | ths | if(fixed)
|
406 | 831b7825 | ths | opt |= MAP_FIXED; |
407 | 831b7825 | ths | |
408 | 831b7825 | ths | DPRINTF("sc->vmaddr 0x%x slide 0x%x add 0x%x\n", slide, sc->vmaddr, sc->vmaddr+slide);
|
409 | 831b7825 | ths | |
410 | 831b7825 | ths | addr = target_mmap(sc->vmaddr+slide, sc->filesize, sc->initprot, opt, fd, mh_pos + sc->fileoff); |
411 | 831b7825 | ths | |
412 | 831b7825 | ths | if(addr==-1) |
413 | 831b7825 | ths | qerror("load_segment: can't mmap at 0x%x\n", sc->vmaddr+slide);
|
414 | 831b7825 | ths | |
415 | 831b7825 | ths | error = addr-sc->vmaddr; |
416 | 831b7825 | ths | } |
417 | 831b7825 | ths | else
|
418 | 831b7825 | ths | { |
419 | 831b7825 | ths | addr = sc->vmaddr+slide; |
420 | 831b7825 | ths | error = slide; |
421 | 831b7825 | ths | } |
422 | 831b7825 | ths | |
423 | 831b7825 | ths | if(sc->vmsize > sc->filesize)
|
424 | 831b7825 | ths | { |
425 | 831b7825 | ths | addr += sc->filesize; |
426 | 831b7825 | ths | size = sc->vmsize-sc->filesize; |
427 | 831b7825 | ths | addr = target_mmap(addr, size, sc->initprot, MAP_ANONYMOUS | MAP_FIXED, -1, 0); |
428 | 831b7825 | ths | if(addr==-1) |
429 | 831b7825 | ths | qerror("load_segment: can't mmap at 0x%x\n", sc->vmaddr+slide);
|
430 | 831b7825 | ths | } |
431 | 831b7825 | ths | |
432 | 831b7825 | ths | return error;
|
433 | 831b7825 | ths | } |
434 | 831b7825 | ths | |
435 | 831b7825 | ths | void *load_data(int fd, long offset, unsigned int size) |
436 | 831b7825 | ths | { |
437 | 831b7825 | ths | char *data;
|
438 | 831b7825 | ths | |
439 | 831b7825 | ths | data = malloc(size); |
440 | 831b7825 | ths | if (!data)
|
441 | 831b7825 | ths | return NULL; |
442 | 831b7825 | ths | lseek(fd, offset, SEEK_SET); |
443 | 831b7825 | ths | if (read(fd, data, size) != size) {
|
444 | 831b7825 | ths | free(data); |
445 | 831b7825 | ths | return NULL; |
446 | 831b7825 | ths | } |
447 | 831b7825 | ths | return data;
|
448 | 831b7825 | ths | } |
449 | 831b7825 | ths | |
450 | 831b7825 | ths | /* load a mach-o object file */
|
451 | 831b7825 | ths | int load_object(const char *filename, struct target_pt_regs * regs, void ** mh) |
452 | 831b7825 | ths | { |
453 | 831b7825 | ths | int need_bswap = 0; |
454 | 831b7825 | ths | int entry_point = 0; |
455 | 831b7825 | ths | int dyld_entry_point = 0; |
456 | 831b7825 | ths | int slide, mmapfixed;
|
457 | 831b7825 | ths | int fd;
|
458 | 831b7825 | ths | struct load_command *lcmds, *lc;
|
459 | 831b7825 | ths | int is_fat = 0; |
460 | 831b7825 | ths | unsigned int i, magic; |
461 | 831b7825 | ths | int mach_hdr_pos = 0; |
462 | 831b7825 | ths | struct mach_header mach_hdr;
|
463 | 831b7825 | ths | |
464 | 831b7825 | ths | /* for symbol lookup whith -d flag. */
|
465 | 831b7825 | ths | struct symtab_command * symtabcmd = 0; |
466 | 831b7825 | ths | struct nlist_extended *symtab, *sym;
|
467 | 831b7825 | ths | struct nlist *symtab_std, *syment;
|
468 | 831b7825 | ths | char *strtab;
|
469 | 831b7825 | ths | |
470 | 831b7825 | ths | fd = open(filename, O_RDONLY); |
471 | 831b7825 | ths | if (fd < 0) |
472 | 831b7825 | ths | qerror("can't open file '%s'", filename);
|
473 | 831b7825 | ths | |
474 | 831b7825 | ths | /* Read magic header. */
|
475 | 831b7825 | ths | if (read(fd, &magic, sizeof (magic)) != sizeof (magic)) |
476 | 831b7825 | ths | qerror("unable to read Magic of '%s'", filename);
|
477 | 831b7825 | ths | |
478 | 831b7825 | ths | /* Check Mach identification. */
|
479 | 831b7825 | ths | if(magic == MH_MAGIC)
|
480 | 831b7825 | ths | { |
481 | 831b7825 | ths | is_fat = 0;
|
482 | 831b7825 | ths | need_bswap = 0;
|
483 | 831b7825 | ths | } else if (magic == MH_CIGAM) |
484 | 831b7825 | ths | { |
485 | 831b7825 | ths | is_fat = 0;
|
486 | 831b7825 | ths | need_bswap = 1;
|
487 | 831b7825 | ths | } else if (magic == FAT_MAGIC) |
488 | 831b7825 | ths | { |
489 | 831b7825 | ths | is_fat = 1;
|
490 | 831b7825 | ths | need_bswap = 0;
|
491 | 831b7825 | ths | } else if (magic == FAT_CIGAM) |
492 | 831b7825 | ths | { |
493 | 831b7825 | ths | is_fat = 1;
|
494 | 831b7825 | ths | need_bswap = 1;
|
495 | 831b7825 | ths | } |
496 | 831b7825 | ths | else
|
497 | 831b7825 | ths | qerror("Not a Mach-O file.", filename);
|
498 | 831b7825 | ths | |
499 | 831b7825 | ths | DPRINTF("loading %s %s...\n", filename, is_fat ? "[FAT]": "[REGULAR]"); |
500 | 831b7825 | ths | if(is_fat)
|
501 | 831b7825 | ths | { |
502 | 831b7825 | ths | int found = 0; |
503 | 831b7825 | ths | struct fat_header fh;
|
504 | 831b7825 | ths | struct fat_arch *fa;
|
505 | 831b7825 | ths | |
506 | 831b7825 | ths | lseek(fd, 0, SEEK_SET);
|
507 | 831b7825 | ths | |
508 | 831b7825 | ths | /* Read Fat header. */
|
509 | 831b7825 | ths | if (read(fd, &fh, sizeof (fh)) != sizeof (fh)) |
510 | 831b7825 | ths | qerror("unable to read file header");
|
511 | 831b7825 | ths | |
512 | 831b7825 | ths | if(need_bswap)
|
513 | 831b7825 | ths | bswap_fh(&fh); |
514 | 831b7825 | ths | |
515 | 831b7825 | ths | /* Read Fat Arch. */
|
516 | 831b7825 | ths | fa = malloc(sizeof(struct fat_arch)*fh.nfat_arch); |
517 | 831b7825 | ths | |
518 | 831b7825 | ths | if (read(fd, fa, sizeof(struct fat_arch)*fh.nfat_arch) != sizeof(struct fat_arch)*fh.nfat_arch) |
519 | 831b7825 | ths | qerror("unable to read file header");
|
520 | 831b7825 | ths | |
521 | 831b7825 | ths | for( i = 0; i < fh.nfat_arch; i++, fa++) |
522 | 831b7825 | ths | { |
523 | 831b7825 | ths | if(need_bswap)
|
524 | 831b7825 | ths | bswap_fa(fa); |
525 | 831b7825 | ths | if(fa->cputype == TARGET_CPU_TYPE)
|
526 | 831b7825 | ths | { |
527 | 831b7825 | ths | mach_hdr_pos = fa->offset; |
528 | 831b7825 | ths | lseek(fd, mach_hdr_pos, SEEK_SET); |
529 | 831b7825 | ths | |
530 | 831b7825 | ths | /* Read Mach header. */
|
531 | 831b7825 | ths | |
532 | 831b7825 | ths | if (read(fd, &mach_hdr, sizeof(struct mach_header)) != sizeof (struct mach_header)) |
533 | 831b7825 | ths | qerror("unable to read file header");
|
534 | 831b7825 | ths | |
535 | 831b7825 | ths | if(mach_hdr.magic == MH_MAGIC)
|
536 | 831b7825 | ths | need_bswap = 0;
|
537 | 831b7825 | ths | else if (mach_hdr.magic == MH_CIGAM) |
538 | 831b7825 | ths | need_bswap = 1;
|
539 | 831b7825 | ths | else
|
540 | 831b7825 | ths | qerror("Invalid mach header in Fat Mach-O File");
|
541 | 831b7825 | ths | found = 1;
|
542 | 831b7825 | ths | break;
|
543 | 831b7825 | ths | } |
544 | 831b7825 | ths | } |
545 | 831b7825 | ths | if(!found)
|
546 | 831b7825 | ths | qerror("%s: No %s CPU found in FAT Header", filename, TARGET_CPU_NAME);
|
547 | 831b7825 | ths | } |
548 | 831b7825 | ths | else
|
549 | 831b7825 | ths | { |
550 | 831b7825 | ths | lseek(fd, 0, SEEK_SET);
|
551 | 831b7825 | ths | /* Read Mach header */
|
552 | 831b7825 | ths | if (read(fd, &mach_hdr, sizeof (mach_hdr)) != sizeof (mach_hdr)) |
553 | 831b7825 | ths | qerror("%s: unable to read file header", filename);
|
554 | 831b7825 | ths | } |
555 | 831b7825 | ths | |
556 | 831b7825 | ths | if(need_bswap)
|
557 | 831b7825 | ths | bswap_mh(&mach_hdr); |
558 | 831b7825 | ths | |
559 | 831b7825 | ths | if ((mach_hdr.cputype) != TARGET_CPU_TYPE)
|
560 | 831b7825 | ths | qerror("%s: Unsupported CPU 0x%x (only 0x%x(%s) supported)", filename, mach_hdr.cputype, TARGET_CPU_TYPE, TARGET_CPU_NAME);
|
561 | 831b7825 | ths | |
562 | 831b7825 | ths | |
563 | 831b7825 | ths | switch(mach_hdr.filetype)
|
564 | 831b7825 | ths | { |
565 | 831b7825 | ths | case MH_EXECUTE: break; |
566 | 831b7825 | ths | case MH_FVMLIB:
|
567 | 831b7825 | ths | case MH_DYLIB:
|
568 | 831b7825 | ths | case MH_DYLINKER: break; |
569 | 831b7825 | ths | default:
|
570 | 831b7825 | ths | qerror("%s: Unsupported Mach type (0x%x)", filename, mach_hdr.filetype);
|
571 | 831b7825 | ths | } |
572 | 831b7825 | ths | |
573 | 831b7825 | ths | /* read segment headers */
|
574 | 831b7825 | ths | lcmds = malloc(mach_hdr.sizeofcmds); |
575 | 831b7825 | ths | |
576 | 831b7825 | ths | if(read(fd, lcmds, mach_hdr.sizeofcmds) != mach_hdr.sizeofcmds)
|
577 | 831b7825 | ths | qerror("%s: unable to read load_command", filename);
|
578 | 831b7825 | ths | slide = 0;
|
579 | 831b7825 | ths | mmapfixed = 0;
|
580 | 831b7825 | ths | for(i=0, lc = lcmds; i < (mach_hdr.ncmds) ; i++) |
581 | 831b7825 | ths | { |
582 | 831b7825 | ths | |
583 | 831b7825 | ths | if(need_bswap)
|
584 | 831b7825 | ths | bswap_lc(lc); |
585 | 831b7825 | ths | switch(lc->cmd)
|
586 | 831b7825 | ths | { |
587 | 831b7825 | ths | case LC_SEGMENT:
|
588 | 831b7825 | ths | /* The main_exe can't be relocated */
|
589 | 831b7825 | ths | if(mach_hdr.filetype == MH_EXECUTE)
|
590 | 831b7825 | ths | mmapfixed = 1;
|
591 | 831b7825 | ths | |
592 | 831b7825 | ths | slide = load_segment(&mach_hdr, (struct segment_command*)lc, fd, mach_hdr_pos, need_bswap, mmapfixed, slide);
|
593 | 831b7825 | ths | |
594 | 831b7825 | ths | /* other segment must be mapped according to slide exactly, if load_segment did something */
|
595 | 831b7825 | ths | if(slide != -1) |
596 | 831b7825 | ths | mmapfixed = 1;
|
597 | 831b7825 | ths | else
|
598 | 831b7825 | ths | slide = 0; /* load_segment didn't map the segment */ |
599 | 831b7825 | ths | |
600 | 831b7825 | ths | if(mach_hdr.filetype == MH_EXECUTE && slide != 0) |
601 | 831b7825 | ths | qerror("%s: Warning executable can't be mapped at the right address (offset: 0x%x)\n", filename, slide);
|
602 | 831b7825 | ths | |
603 | 831b7825 | ths | if(strcmp(((struct segment_command*)(lc))->segname, "__TEXT") == 0) |
604 | 831b7825 | ths | { |
605 | 831b7825 | ths | /* Text section */
|
606 | 831b7825 | ths | if(mach_hdr.filetype == MH_EXECUTE)
|
607 | 831b7825 | ths | { |
608 | 831b7825 | ths | /* return the mach_header */
|
609 | 831b7825 | ths | *mh = (void*)(((struct segment_command*)(lc))->vmaddr + slide); |
610 | 831b7825 | ths | } |
611 | 831b7825 | ths | else
|
612 | 831b7825 | ths | { |
613 | 831b7825 | ths | /* it is dyld save the section for gdb, we will be interested in dyld symbol
|
614 | 831b7825 | ths | while debuging */
|
615 | 831b7825 | ths | macho_text_sect = (void*)(((struct segment_command*)(lc))->vmaddr + slide); |
616 | 831b7825 | ths | macho_offset = slide; |
617 | 831b7825 | ths | } |
618 | 831b7825 | ths | } |
619 | 831b7825 | ths | break;
|
620 | 831b7825 | ths | case LC_LOAD_DYLINKER:
|
621 | 831b7825 | ths | dyld_entry_point = load_dylinker( &mach_hdr, (struct dylinker_command*)lc, fd, mach_hdr_pos, need_bswap );
|
622 | 831b7825 | ths | break;
|
623 | 831b7825 | ths | case LC_LOAD_DYLIB:
|
624 | 831b7825 | ths | /* dyld will do that for us */
|
625 | 831b7825 | ths | break;
|
626 | 831b7825 | ths | case LC_THREAD:
|
627 | 831b7825 | ths | case LC_UNIXTHREAD:
|
628 | 831b7825 | ths | { |
629 | 831b7825 | ths | struct target_pt_regs * _regs;
|
630 | 831b7825 | ths | if(mach_hdr.filetype == MH_DYLINKER)
|
631 | 831b7825 | ths | _regs = regs; |
632 | 831b7825 | ths | else
|
633 | 831b7825 | ths | _regs = 0;
|
634 | 831b7825 | ths | entry_point = load_thread( &mach_hdr, (struct target_thread_command*)lc, _regs, fd, mach_hdr_pos, need_bswap );
|
635 | 831b7825 | ths | } |
636 | 831b7825 | ths | break;
|
637 | 831b7825 | ths | case LC_SYMTAB:
|
638 | 831b7825 | ths | /* Save the symtab and strtab */
|
639 | 831b7825 | ths | symtabcmd = (struct symtab_command *)lc;
|
640 | 831b7825 | ths | break;
|
641 | 831b7825 | ths | case LC_ID_DYLINKER:
|
642 | 831b7825 | ths | case LC_ID_DYLIB:
|
643 | 831b7825 | ths | case LC_UUID:
|
644 | 831b7825 | ths | case LC_DYSYMTAB:
|
645 | 831b7825 | ths | case LC_TWOLEVEL_HINTS:
|
646 | 831b7825 | ths | case LC_PREBIND_CKSUM:
|
647 | 831b7825 | ths | case LC_SUB_LIBRARY:
|
648 | 831b7825 | ths | break;
|
649 | 831b7825 | ths | default: fprintf(stderr, "warning: unkown command 0x%x in '%s'\n", lc->cmd, filename); |
650 | 831b7825 | ths | } |
651 | 831b7825 | ths | lc = (struct load_command*)((int)(lc)+(lc->cmdsize)); |
652 | 831b7825 | ths | } |
653 | 831b7825 | ths | |
654 | 831b7825 | ths | if(symtabcmd)
|
655 | 831b7825 | ths | { |
656 | 831b7825 | ths | if(need_bswap)
|
657 | 831b7825 | ths | bswap_symtabcmd(symtabcmd); |
658 | 831b7825 | ths | |
659 | 831b7825 | ths | symtab_std = load_data(fd, symtabcmd->symoff+mach_hdr_pos, symtabcmd->nsyms * sizeof(struct nlist)); |
660 | 831b7825 | ths | strtab = load_data(fd, symtabcmd->stroff+mach_hdr_pos, symtabcmd->strsize); |
661 | 831b7825 | ths | |
662 | 831b7825 | ths | symtab = malloc(sizeof(struct nlist_extended) * symtabcmd->nsyms); |
663 | 831b7825 | ths | |
664 | 831b7825 | ths | if(need_bswap)
|
665 | 831b7825 | ths | { |
666 | 831b7825 | ths | for(i = 0, syment = symtab_std; i < symtabcmd->nsyms; i++, syment++) |
667 | 831b7825 | ths | bswap_sym(syment); |
668 | 831b7825 | ths | } |
669 | 831b7825 | ths | |
670 | 831b7825 | ths | for(i = 0, sym = symtab, syment = symtab_std; i < symtabcmd->nsyms; i++, sym++, syment++) |
671 | 831b7825 | ths | { |
672 | 831b7825 | ths | struct nlist *sym_follow, *sym_next = 0; |
673 | 831b7825 | ths | unsigned int j; |
674 | 831b7825 | ths | memset(sym, 0, sizeof(*sym)); |
675 | 831b7825 | ths | |
676 | 831b7825 | ths | sym->n_type = syment->n_type; |
677 | 831b7825 | ths | if ( syment->n_type & N_STAB ) /* Debug symbols are skipped */ |
678 | 831b7825 | ths | continue;
|
679 | 831b7825 | ths | |
680 | 831b7825 | ths | memcpy(sym, syment, sizeof(*syment));
|
681 | 831b7825 | ths | |
682 | 831b7825 | ths | /* Find the following symbol in order to get the current symbol size */
|
683 | 831b7825 | ths | for(j = 0, sym_follow = symtab_std; j < symtabcmd->nsyms; j++, sym_follow++) { |
684 | 831b7825 | ths | if ( sym_follow->n_type & N_STAB || !(sym_follow->n_value > sym->st_value))
|
685 | 831b7825 | ths | continue;
|
686 | 831b7825 | ths | if(!sym_next) {
|
687 | 831b7825 | ths | sym_next = sym_follow; |
688 | 831b7825 | ths | continue;
|
689 | 831b7825 | ths | } |
690 | 831b7825 | ths | if(!(sym_next->n_value > sym_follow->n_value))
|
691 | 831b7825 | ths | continue;
|
692 | 831b7825 | ths | sym_next = sym_follow; |
693 | 831b7825 | ths | } |
694 | 831b7825 | ths | if(sym_next)
|
695 | 831b7825 | ths | sym->st_size = sym_next->n_value - sym->st_value; |
696 | 831b7825 | ths | else
|
697 | 831b7825 | ths | sym->st_size = 10; /* XXX: text_sec_hdr->size + text_sec_hdr->offset - sym->st_value; */ |
698 | 831b7825 | ths | |
699 | 831b7825 | ths | sym->st_value += slide; |
700 | 831b7825 | ths | } |
701 | 831b7825 | ths | |
702 | 831b7825 | ths | free((void*)symtab_std);
|
703 | 831b7825 | ths | |
704 | 831b7825 | ths | { |
705 | 831b7825 | ths | DPRINTF("saving symtab of %s (%d symbol(s))\n", filename, symtabcmd->nsyms);
|
706 | 831b7825 | ths | struct syminfo *s;
|
707 | 831b7825 | ths | s = malloc(sizeof(*s));
|
708 | 831b7825 | ths | s->disas_symtab = symtab; |
709 | 831b7825 | ths | s->disas_strtab = strtab; |
710 | 831b7825 | ths | s->disas_num_syms = symtabcmd->nsyms; |
711 | 831b7825 | ths | s->next = syminfos; |
712 | 831b7825 | ths | syminfos = s; |
713 | 831b7825 | ths | } |
714 | 831b7825 | ths | } |
715 | 831b7825 | ths | close(fd); |
716 | 831b7825 | ths | if(mach_hdr.filetype == MH_EXECUTE && dyld_entry_point)
|
717 | 831b7825 | ths | return dyld_entry_point;
|
718 | 831b7825 | ths | else
|
719 | 831b7825 | ths | return entry_point+slide;
|
720 | 831b7825 | ths | } |
721 | 831b7825 | ths | |
722 | 831b7825 | ths | extern unsigned long stack_size; |
723 | 831b7825 | ths | |
724 | 831b7825 | ths | unsigned long setup_arg_pages(void * mh, char ** argv, char ** env) |
725 | 831b7825 | ths | { |
726 | 831b7825 | ths | unsigned long stack_base, error, size; |
727 | 831b7825 | ths | int i;
|
728 | 831b7825 | ths | int * stack;
|
729 | 831b7825 | ths | int argc, envc;
|
730 | 831b7825 | ths | |
731 | 831b7825 | ths | /* Create enough stack to hold everything. If we don't use
|
732 | 831b7825 | ths | * it for args, we'll use it for something else...
|
733 | 831b7825 | ths | */
|
734 | 831b7825 | ths | size = stack_size; |
735 | 831b7825 | ths | |
736 | 831b7825 | ths | error = target_mmap(0,
|
737 | 831b7825 | ths | size + qemu_host_page_size, |
738 | 831b7825 | ths | PROT_READ | PROT_WRITE, |
739 | 831b7825 | ths | MAP_PRIVATE | MAP_ANONYMOUS, |
740 | 831b7825 | ths | -1, 0); |
741 | 831b7825 | ths | if (error == -1) |
742 | 831b7825 | ths | qerror("stk mmap");
|
743 | 831b7825 | ths | |
744 | 831b7825 | ths | /* we reserve one extra page at the top of the stack as guard */
|
745 | 831b7825 | ths | target_mprotect(error + size, qemu_host_page_size, PROT_NONE); |
746 | 831b7825 | ths | |
747 | 831b7825 | ths | stack_base = error + size; |
748 | 831b7825 | ths | stack = (void*)stack_base;
|
749 | 831b7825 | ths | /*
|
750 | 831b7825 | ths | * | STRING AREA |
|
751 | 831b7825 | ths | * +-------------+
|
752 | 831b7825 | ths | * | 0 |
|
753 | 831b7825 | ths | * +-------------+
|
754 | 831b7825 | ths | * | apple[n] |
|
755 | 831b7825 | ths | * +-------------+
|
756 | 831b7825 | ths | * :
|
757 | 831b7825 | ths | * +-------------+
|
758 | 831b7825 | ths | * | apple[0] |
|
759 | 831b7825 | ths | * +-------------+
|
760 | 831b7825 | ths | * | 0 |
|
761 | 831b7825 | ths | * +-------------+
|
762 | 831b7825 | ths | * | env[n] |
|
763 | 831b7825 | ths | * +-------------+
|
764 | 831b7825 | ths | * :
|
765 | 831b7825 | ths | * :
|
766 | 831b7825 | ths | * +-------------+
|
767 | 831b7825 | ths | * | env[0] |
|
768 | 831b7825 | ths | * +-------------+
|
769 | 831b7825 | ths | * | 0 |
|
770 | 831b7825 | ths | * +-------------+
|
771 | 831b7825 | ths | * | arg[argc-1] |
|
772 | 831b7825 | ths | * +-------------+
|
773 | 831b7825 | ths | * :
|
774 | 831b7825 | ths | * :
|
775 | 831b7825 | ths | * +-------------+
|
776 | 831b7825 | ths | * | arg[0] |
|
777 | 831b7825 | ths | * +-------------+
|
778 | 831b7825 | ths | * | argc |
|
779 | 831b7825 | ths | * +-------------+
|
780 | 831b7825 | ths | * sp-> | mh | address of where the a.out's file offset 0 is in memory
|
781 | 831b7825 | ths | * +-------------+
|
782 | 831b7825 | ths | */
|
783 | 831b7825 | ths | /* Construct the stack Stack grows down */
|
784 | 831b7825 | ths | stack--; |
785 | 831b7825 | ths | |
786 | 831b7825 | ths | /* XXX: string should go up there */
|
787 | 831b7825 | ths | |
788 | 831b7825 | ths | *stack = 0;
|
789 | 831b7825 | ths | stack--; |
790 | 831b7825 | ths | |
791 | 831b7825 | ths | /* Push the absolute path of our executable */
|
792 | 831b7825 | ths | DPRINTF("pushing apple %s (0x%x)\n", (char*)argv[0], (int)argv[0]); |
793 | 831b7825 | ths | stl(stack, (int) argv[0]); |
794 | 831b7825 | ths | |
795 | 831b7825 | ths | stack--; |
796 | 831b7825 | ths | |
797 | 831b7825 | ths | stl(stack, 0);
|
798 | 831b7825 | ths | stack--; |
799 | 831b7825 | ths | |
800 | 831b7825 | ths | /* Get envc */
|
801 | 831b7825 | ths | for(envc = 0; env[envc]; envc++); |
802 | 831b7825 | ths | |
803 | 831b7825 | ths | for(i = envc-1; i >= 0; i--) |
804 | 831b7825 | ths | { |
805 | 831b7825 | ths | DPRINTF("pushing env %s (0x%x)\n", (char*)env[i], (int)env[i]); |
806 | 831b7825 | ths | stl(stack, (int)env[i]);
|
807 | 831b7825 | ths | stack--; |
808 | 831b7825 | ths | |
809 | 831b7825 | ths | /* XXX: remove that when string will be on top of the stack */
|
810 | 831b7825 | ths | page_set_flags((int)env[i], (int)(env[i]+strlen(env[i])), PROT_READ | PAGE_VALID); |
811 | 831b7825 | ths | } |
812 | 831b7825 | ths | |
813 | 831b7825 | ths | /* Add on the stack the interp_prefix choosen if so */
|
814 | 831b7825 | ths | if(interp_prefix[0]) |
815 | 831b7825 | ths | { |
816 | 831b7825 | ths | char *dyld_root;
|
817 | 831b7825 | ths | asprintf(&dyld_root, "DYLD_ROOT_PATH=%s", interp_prefix);
|
818 | 831b7825 | ths | page_set_flags((int)dyld_root, (int)(dyld_root+strlen(interp_prefix)+1), PROT_READ | PAGE_VALID); |
819 | 831b7825 | ths | |
820 | 831b7825 | ths | stl(stack, (int)dyld_root);
|
821 | 831b7825 | ths | stack--; |
822 | 831b7825 | ths | } |
823 | 831b7825 | ths | |
824 | 831b7825 | ths | #ifdef DONT_USE_DYLD_SHARED_MAP
|
825 | 831b7825 | ths | { |
826 | 831b7825 | ths | char *shared_map_mode;
|
827 | 831b7825 | ths | asprintf(&shared_map_mode, "DYLD_SHARED_REGION=avoid");
|
828 | 831b7825 | ths | page_set_flags((int)shared_map_mode, (int)(shared_map_mode+strlen(shared_map_mode)+1), PROT_READ | PAGE_VALID); |
829 | 831b7825 | ths | |
830 | 831b7825 | ths | stl(stack, (int)shared_map_mode);
|
831 | 831b7825 | ths | stack--; |
832 | 831b7825 | ths | } |
833 | 831b7825 | ths | #endif
|
834 | 831b7825 | ths | |
835 | 831b7825 | ths | #ifdef ACTIVATE_DYLD_TRACE
|
836 | 831b7825 | ths | char * extra_env_static[] = {"DYLD_DEBUG_TRACE=yes", |
837 | 831b7825 | ths | "DYLD_PREBIND_DEBUG=3", "DYLD_UNKNOW_TRACE=yes", |
838 | 831b7825 | ths | "DYLD_PRINT_INITIALIZERS=yes",
|
839 | 831b7825 | ths | "DYLD_PRINT_SEGMENTS=yes", "DYLD_PRINT_REBASINGS=yes", "DYLD_PRINT_BINDINGS=yes", "DYLD_PRINT_INITIALIZERS=yes", "DYLD_PRINT_WARNINGS=yes" }; |
840 | 831b7825 | ths | |
841 | 831b7825 | ths | char ** extra_env = malloc(sizeof(extra_env_static)); |
842 | 831b7825 | ths | bcopy(extra_env_static, extra_env, sizeof(extra_env_static));
|
843 | 831b7825 | ths | page_set_flags((int)extra_env, (int)((void*)extra_env+sizeof(extra_env_static)), PROT_READ | PAGE_VALID); |
844 | 831b7825 | ths | |
845 | 831b7825 | ths | for(i = 0; i<9; i++) |
846 | 831b7825 | ths | { |
847 | 831b7825 | ths | DPRINTF("pushing (extra) env %s (0x%x)\n", (char*)extra_env[i], (int)extra_env[i]); |
848 | 831b7825 | ths | stl(stack, (int) extra_env[i]);
|
849 | 831b7825 | ths | stack--; |
850 | 831b7825 | ths | } |
851 | 831b7825 | ths | #endif
|
852 | 831b7825 | ths | |
853 | 831b7825 | ths | stl(stack, 0);
|
854 | 831b7825 | ths | stack--; |
855 | 831b7825 | ths | |
856 | 831b7825 | ths | /* Get argc */
|
857 | 831b7825 | ths | for(argc = 0; argv[argc]; argc++); |
858 | 831b7825 | ths | |
859 | 831b7825 | ths | for(i = argc-1; i >= 0; i--) |
860 | 831b7825 | ths | { |
861 | 831b7825 | ths | DPRINTF("pushing arg %s (0x%x)\n", (char*)argv[i], (int)argv[i]); |
862 | 831b7825 | ths | stl(stack, (int) argv[i]);
|
863 | 831b7825 | ths | stack--; |
864 | 831b7825 | ths | |
865 | 831b7825 | ths | /* XXX: remove that when string will be on top of the stack */
|
866 | 831b7825 | ths | page_set_flags((int)argv[i], (int)(argv[i]+strlen(argv[i])), PROT_READ | PAGE_VALID); |
867 | 831b7825 | ths | } |
868 | 831b7825 | ths | |
869 | 831b7825 | ths | DPRINTF("pushing argc %d \n", argc);
|
870 | 831b7825 | ths | stl(stack, argc); |
871 | 831b7825 | ths | stack--; |
872 | 831b7825 | ths | |
873 | 831b7825 | ths | DPRINTF("pushing mh 0x%x \n", (int)mh); |
874 | 831b7825 | ths | stl(stack, (int) mh);
|
875 | 831b7825 | ths | |
876 | 831b7825 | ths | /* Stack points on the mh */
|
877 | 831b7825 | ths | return (unsigned long)stack; |
878 | 831b7825 | ths | } |
879 | 831b7825 | ths | |
880 | 831b7825 | ths | int mach_exec(const char * filename, char ** argv, char ** envp, |
881 | 831b7825 | ths | struct target_pt_regs * regs)
|
882 | 831b7825 | ths | { |
883 | 831b7825 | ths | int entrypoint, stack;
|
884 | 831b7825 | ths | void * mh; /* the Mach Header that will be used by dyld */ |
885 | 831b7825 | ths | |
886 | 831b7825 | ths | DPRINTF("mach_exec at 0x%x\n", (int)mach_exec); |
887 | 831b7825 | ths | |
888 | 831b7825 | ths | entrypoint = load_object(filename, regs, &mh); |
889 | 831b7825 | ths | stack = setup_arg_pages(mh, argv, envp); |
890 | 831b7825 | ths | #if defined(TARGET_I386)
|
891 | 831b7825 | ths | regs->eip = entrypoint; |
892 | 831b7825 | ths | regs->esp = stack; |
893 | 831b7825 | ths | #elif defined(TARGET_PPC)
|
894 | 831b7825 | ths | regs->nip = entrypoint; |
895 | 831b7825 | ths | regs->gpr[1] = stack;
|
896 | 831b7825 | ths | #endif
|
897 | 831b7825 | ths | DPRINTF("mach_exec returns eip set to 0x%x esp 0x%x mh 0x%x\n", entrypoint, stack, (int)mh); |
898 | 831b7825 | ths | |
899 | 831b7825 | ths | if(!entrypoint)
|
900 | 831b7825 | ths | qerror("%s: no entry point!\n", filename);
|
901 | 831b7825 | ths | |
902 | 831b7825 | ths | return 0; |
903 | 831b7825 | ths | } |