2 * Mach-O object file loading
4 * Copyright (c) 2006 Pierre d'Herbemont
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #include <sys/types.h>
32 #include <mach-o/loader.h>
33 #include <mach-o/fat.h>
34 #include <mach-o/nlist.h>
35 #include <mach-o/reloc.h>
36 #include <mach-o/ppc/reloc.h>
38 //#define DEBUG_MACHLOAD
41 # define DPRINTF(...) do { qemu_log(__VA_ARGS__); printf(__VA_ARGS__); } while(0)
43 # define DPRINTF(...) do { qemu_log(__VA_ARGS__); } while(0)
46 # define check_mach_header(x) (x.magic == MH_CIGAM)
48 extern const char *interp_prefix;
50 /* we don't have a good implementation for this */
51 #define DONT_USE_DYLD_SHARED_MAP
53 /* Pass extra arg to DYLD for debug */
54 //#define ACTIVATE_DYLD_TRACE
56 //#define OVERRIDE_DYLINKER
58 #ifdef OVERRIDE_DYLINKER
60 # define DYLINKER_NAME "/Users/steg/qemu/tests/i386-darwin-env/usr/lib/dyld"
62 # define DYLINKER_NAME "/usr/lib/dyld"
66 /* XXX: in an include */
76 unsigned long st_value;
77 unsigned long st_size;
80 /* Print symbols in gdb */
81 void *macho_text_sect = 0;
84 int load_object(const char *filename, struct target_pt_regs * regs, void ** mh);
85 void qerror(const char *format, ...);
87 typedef struct mach_i386_thread_state {
104 } mach_i386_thread_state_t;
106 void bswap_i386_thread_state(struct mach_i386_thread_state *ts)
108 bswap32s((uint32_t*)&ts->eax);
109 bswap32s((uint32_t*)&ts->ebx);
110 bswap32s((uint32_t*)&ts->ecx);
111 bswap32s((uint32_t*)&ts->edx);
112 bswap32s((uint32_t*)&ts->edi);
113 bswap32s((uint32_t*)&ts->esi);
114 bswap32s((uint32_t*)&ts->ebp);
115 bswap32s((uint32_t*)&ts->esp);
116 bswap32s((uint32_t*)&ts->ss);
117 bswap32s((uint32_t*)&ts->eflags);
118 bswap32s((uint32_t*)&ts->eip);
119 bswap32s((uint32_t*)&ts->cs);
120 bswap32s((uint32_t*)&ts->ds);
121 bswap32s((uint32_t*)&ts->es);
122 bswap32s((uint32_t*)&ts->fs);
123 bswap32s((uint32_t*)&ts->gs);
125 #define target_thread_state mach_i386_thread_state
126 #define TARGET_CPU_TYPE CPU_TYPE_I386
127 #define TARGET_CPU_NAME "i386"
131 struct mach_ppc_thread_state {
132 unsigned int srr0; /* Instruction address register (PC) */
133 unsigned int srr1; /* Machine state register (supervisor) */
167 unsigned int cr; /* Condition register */
168 unsigned int xer; /* User's integer exception register */
169 unsigned int lr; /* Link register */
170 unsigned int ctr; /* Count register */
171 unsigned int mq; /* MQ register (601 only) */
173 unsigned int vrsave; /* Vector Save Register */
176 void bswap_ppc_thread_state(struct mach_ppc_thread_state *ts)
178 bswap32s((uint32_t*)&ts->srr0);
179 bswap32s((uint32_t*)&ts->srr1);
180 bswap32s((uint32_t*)&ts->r0);
181 bswap32s((uint32_t*)&ts->r1);
182 bswap32s((uint32_t*)&ts->r2);
183 bswap32s((uint32_t*)&ts->r3);
184 bswap32s((uint32_t*)&ts->r4);
185 bswap32s((uint32_t*)&ts->r5);
186 bswap32s((uint32_t*)&ts->r6);
187 bswap32s((uint32_t*)&ts->r7);
188 bswap32s((uint32_t*)&ts->r8);
189 bswap32s((uint32_t*)&ts->r9);
190 bswap32s((uint32_t*)&ts->r10);
191 bswap32s((uint32_t*)&ts->r11);
192 bswap32s((uint32_t*)&ts->r12);
193 bswap32s((uint32_t*)&ts->r13);
194 bswap32s((uint32_t*)&ts->r14);
195 bswap32s((uint32_t*)&ts->r15);
196 bswap32s((uint32_t*)&ts->r16);
197 bswap32s((uint32_t*)&ts->r17);
198 bswap32s((uint32_t*)&ts->r18);
199 bswap32s((uint32_t*)&ts->r19);
200 bswap32s((uint32_t*)&ts->r20);
201 bswap32s((uint32_t*)&ts->r21);
202 bswap32s((uint32_t*)&ts->r22);
203 bswap32s((uint32_t*)&ts->r23);
204 bswap32s((uint32_t*)&ts->r24);
205 bswap32s((uint32_t*)&ts->r25);
206 bswap32s((uint32_t*)&ts->r26);
207 bswap32s((uint32_t*)&ts->r27);
208 bswap32s((uint32_t*)&ts->r28);
209 bswap32s((uint32_t*)&ts->r29);
210 bswap32s((uint32_t*)&ts->r30);
211 bswap32s((uint32_t*)&ts->r31);
213 bswap32s((uint32_t*)&ts->cr);
214 bswap32s((uint32_t*)&ts->xer);
215 bswap32s((uint32_t*)&ts->lr);
216 bswap32s((uint32_t*)&ts->ctr);
217 bswap32s((uint32_t*)&ts->mq);
219 bswap32s((uint32_t*)&ts->vrsave);
222 #define target_thread_state mach_ppc_thread_state
223 #define TARGET_CPU_TYPE CPU_TYPE_POWERPC
224 #define TARGET_CPU_NAME "PowerPC"
227 struct target_thread_command {
228 unsigned long cmd; /* LC_THREAD or LC_UNIXTHREAD */
229 unsigned long cmdsize; /* total size of this command */
230 unsigned long flavor; /* flavor of thread state */
231 unsigned long count; /* count of longs in thread state */
232 struct target_thread_state state; /* thread state for this flavor */
235 void bswap_tc(struct target_thread_command *tc)
237 bswap32s((uint32_t*)(&tc->flavor));
238 bswap32s((uint32_t*)&tc->count);
239 #if defined(TARGET_I386)
240 bswap_i386_thread_state(&tc->state);
241 #elif defined(TARGET_PPC)
242 bswap_ppc_thread_state(&tc->state);
244 # error unknown TARGET_CPU_TYPE
248 void bswap_mh(struct mach_header *mh)
250 bswap32s((uint32_t*)(&mh->magic));
251 bswap32s((uint32_t*)&mh->cputype);
252 bswap32s((uint32_t*)&mh->cpusubtype);
253 bswap32s((uint32_t*)&mh->filetype);
254 bswap32s((uint32_t*)&mh->ncmds);
255 bswap32s((uint32_t*)&mh->sizeofcmds);
256 bswap32s((uint32_t*)&mh->flags);
259 void bswap_lc(struct load_command *lc)
261 bswap32s((uint32_t*)&lc->cmd);
262 bswap32s((uint32_t*)&lc->cmdsize);
266 void bswap_fh(struct fat_header *fh)
268 bswap32s((uint32_t*)&fh->magic);
269 bswap32s((uint32_t*)&fh->nfat_arch);
272 void bswap_fa(struct fat_arch *fa)
274 bswap32s((uint32_t*)&fa->cputype);
275 bswap32s((uint32_t*)&fa->cpusubtype);
276 bswap32s((uint32_t*)&fa->offset);
277 bswap32s((uint32_t*)&fa->size);
278 bswap32s((uint32_t*)&fa->align);
281 void bswap_segcmd(struct segment_command *sc)
283 bswap32s((uint32_t*)&sc->vmaddr);
284 bswap32s((uint32_t*)&sc->vmsize);
285 bswap32s((uint32_t*)&sc->fileoff);
286 bswap32s((uint32_t*)&sc->filesize);
287 bswap32s((uint32_t*)&sc->maxprot);
288 bswap32s((uint32_t*)&sc->initprot);
289 bswap32s((uint32_t*)&sc->nsects);
290 bswap32s((uint32_t*)&sc->flags);
293 void bswap_symtabcmd(struct symtab_command *stc)
295 bswap32s((uint32_t*)&stc->cmd);
296 bswap32s((uint32_t*)&stc->cmdsize);
297 bswap32s((uint32_t*)&stc->symoff);
298 bswap32s((uint32_t*)&stc->nsyms);
299 bswap32s((uint32_t*)&stc->stroff);
300 bswap32s((uint32_t*)&stc->strsize);
303 void bswap_sym(struct nlist *n)
305 bswap32s((uint32_t*)&n->n_un.n_strx);
306 bswap16s((uint16_t*)&n->n_desc);
307 bswap32s((uint32_t*)&n->n_value);
310 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)
315 #if defined(TARGET_I386)
316 entry = tc->state.eip;
317 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",
318 tc->state.eax, tc->state.ebx, tc->state.ecx, tc->state.edx, tc->state.edi, tc->state.esi, tc->state.ebp,
319 tc->state.esp, tc->state.ss, tc->state.eflags, tc->state.eip, tc->state.cs, tc->state.ds, tc->state.es,
320 tc->state.fs, tc->state.gs );
321 #define reg_copy(reg) regs->reg = tc->state.reg
346 #elif defined(TARGET_PPC)
347 entry = tc->state.srr0;
349 DPRINTF("load_thread: entry 0x%x\n", entry);
353 int load_dylinker(struct mach_header *mh, struct dylinker_command *dc, int fd, int mh_pos, int need_bswap)
356 char * dylinker_name;
357 size = dc->cmdsize - sizeof(struct dylinker_command);
360 dylinker_name = (char*)(bswap_32(dc->name.offset)+(int)dc);
362 dylinker_name = (char*)((dc->name.offset)+(int)dc);
364 #ifdef OVERRIDE_DYLINKER
365 dylinker_name = DYLINKER_NAME;
367 if(asprintf(&dylinker_name, "%s%s", interp_prefix, dylinker_name) == -1)
368 qerror("can't allocate the new dylinker name\n");
371 DPRINTF("dylinker_name %s\n", dylinker_name);
372 return load_object(dylinker_name, NULL, NULL);
375 int load_segment(struct mach_header *mh, struct segment_command *sc, int fd, int mh_pos, int need_bswap, int fixed, int slide)
377 unsigned long addr = sc->vmaddr;
378 unsigned long size = sc->filesize;
379 unsigned long error = 0;
386 DPRINTF("load_segment: sc->vmaddr == 0 returning\n");
390 if (strcmp(sc->segname, "__PAGEZERO") == 0)
392 DPRINTF("load_segment: __PAGEZERO returning\n");
396 /* Right now mmap memory */
397 /* XXX: should check to see that the space is free, because MAP_FIXED is dangerous */
398 DPRINTF("load_segment: mmaping %s to 0x%x-(0x%x|0x%x) + 0x%x\n", sc->segname, sc->vmaddr, sc->filesize, sc->vmsize, slide);
407 DPRINTF("sc->vmaddr 0x%x slide 0x%x add 0x%x\n", slide, sc->vmaddr, sc->vmaddr+slide);
409 addr = target_mmap(sc->vmaddr+slide, sc->filesize, sc->initprot, opt, fd, mh_pos + sc->fileoff);
412 qerror("load_segment: can't mmap at 0x%x\n", sc->vmaddr+slide);
414 error = addr-sc->vmaddr;
418 addr = sc->vmaddr+slide;
422 if(sc->vmsize > sc->filesize)
424 addr += sc->filesize;
425 size = sc->vmsize-sc->filesize;
426 addr = target_mmap(addr, size, sc->initprot, MAP_ANONYMOUS | MAP_FIXED, -1, 0);
428 qerror("load_segment: can't mmap at 0x%x\n", sc->vmaddr+slide);
434 void *load_data(int fd, long offset, unsigned int size)
441 lseek(fd, offset, SEEK_SET);
442 if (read(fd, data, size) != size) {
449 /* load a mach-o object file */
450 int load_object(const char *filename, struct target_pt_regs * regs, void ** mh)
454 int dyld_entry_point = 0;
455 int slide, mmapfixed;
457 struct load_command *lcmds, *lc;
459 unsigned int i, magic;
460 int mach_hdr_pos = 0;
461 struct mach_header mach_hdr;
463 /* for symbol lookup whith -d flag. */
464 struct symtab_command * symtabcmd = 0;
465 struct nlist_extended *symtab, *sym;
466 struct nlist *symtab_std, *syment;
469 fd = open(filename, O_RDONLY);
471 qerror("can't open file '%s'", filename);
473 /* Read magic header. */
474 if (read(fd, &magic, sizeof (magic)) != sizeof (magic))
475 qerror("unable to read Magic of '%s'", filename);
477 /* Check Mach identification. */
478 if(magic == MH_MAGIC)
482 } else if (magic == MH_CIGAM)
486 } else if (magic == FAT_MAGIC)
490 } else if (magic == FAT_CIGAM)
496 qerror("Not a Mach-O file.", filename);
498 DPRINTF("loading %s %s...\n", filename, is_fat ? "[FAT]": "[REGULAR]");
502 struct fat_header fh;
505 lseek(fd, 0, SEEK_SET);
507 /* Read Fat header. */
508 if (read(fd, &fh, sizeof (fh)) != sizeof (fh))
509 qerror("unable to read file header");
515 fa = malloc(sizeof(struct fat_arch)*fh.nfat_arch);
517 if (read(fd, fa, sizeof(struct fat_arch)*fh.nfat_arch) != sizeof(struct fat_arch)*fh.nfat_arch)
518 qerror("unable to read file header");
520 for( i = 0; i < fh.nfat_arch; i++, fa++)
524 if(fa->cputype == TARGET_CPU_TYPE)
526 mach_hdr_pos = fa->offset;
527 lseek(fd, mach_hdr_pos, SEEK_SET);
529 /* Read Mach header. */
531 if (read(fd, &mach_hdr, sizeof(struct mach_header)) != sizeof (struct mach_header))
532 qerror("unable to read file header");
534 if(mach_hdr.magic == MH_MAGIC)
536 else if (mach_hdr.magic == MH_CIGAM)
539 qerror("Invalid mach header in Fat Mach-O File");
545 qerror("%s: No %s CPU found in FAT Header", filename, TARGET_CPU_NAME);
549 lseek(fd, 0, SEEK_SET);
550 /* Read Mach header */
551 if (read(fd, &mach_hdr, sizeof (mach_hdr)) != sizeof (mach_hdr))
552 qerror("%s: unable to read file header", filename);
558 if ((mach_hdr.cputype) != TARGET_CPU_TYPE)
559 qerror("%s: Unsupported CPU 0x%x (only 0x%x(%s) supported)", filename, mach_hdr.cputype, TARGET_CPU_TYPE, TARGET_CPU_NAME);
562 switch(mach_hdr.filetype)
564 case MH_EXECUTE: break;
567 case MH_DYLINKER: break;
569 qerror("%s: Unsupported Mach type (0x%x)", filename, mach_hdr.filetype);
572 /* read segment headers */
573 lcmds = malloc(mach_hdr.sizeofcmds);
575 if(read(fd, lcmds, mach_hdr.sizeofcmds) != mach_hdr.sizeofcmds)
576 qerror("%s: unable to read load_command", filename);
579 for(i=0, lc = lcmds; i < (mach_hdr.ncmds) ; i++)
587 /* The main_exe can't be relocated */
588 if(mach_hdr.filetype == MH_EXECUTE)
591 slide = load_segment(&mach_hdr, (struct segment_command*)lc, fd, mach_hdr_pos, need_bswap, mmapfixed, slide);
593 /* other segment must be mapped according to slide exactly, if load_segment did something */
597 slide = 0; /* load_segment didn't map the segment */
599 if(mach_hdr.filetype == MH_EXECUTE && slide != 0)
600 qerror("%s: Warning executable can't be mapped at the right address (offset: 0x%x)\n", filename, slide);
602 if(strcmp(((struct segment_command*)(lc))->segname, "__TEXT") == 0)
605 if(mach_hdr.filetype == MH_EXECUTE)
607 /* return the mach_header */
608 *mh = (void*)(((struct segment_command*)(lc))->vmaddr + slide);
612 /* it is dyld save the section for gdb, we will be interested in dyld symbol
614 macho_text_sect = (void*)(((struct segment_command*)(lc))->vmaddr + slide);
615 macho_offset = slide;
619 case LC_LOAD_DYLINKER:
620 dyld_entry_point = load_dylinker( &mach_hdr, (struct dylinker_command*)lc, fd, mach_hdr_pos, need_bswap );
623 /* dyld will do that for us */
628 struct target_pt_regs * _regs;
629 if(mach_hdr.filetype == MH_DYLINKER)
633 entry_point = load_thread( &mach_hdr, (struct target_thread_command*)lc, _regs, fd, mach_hdr_pos, need_bswap );
637 /* Save the symtab and strtab */
638 symtabcmd = (struct symtab_command *)lc;
644 case LC_TWOLEVEL_HINTS:
645 case LC_PREBIND_CKSUM:
648 default: fprintf(stderr, "warning: unkown command 0x%x in '%s'\n", lc->cmd, filename);
650 lc = (struct load_command*)((int)(lc)+(lc->cmdsize));
656 bswap_symtabcmd(symtabcmd);
658 symtab_std = load_data(fd, symtabcmd->symoff+mach_hdr_pos, symtabcmd->nsyms * sizeof(struct nlist));
659 strtab = load_data(fd, symtabcmd->stroff+mach_hdr_pos, symtabcmd->strsize);
661 symtab = malloc(sizeof(struct nlist_extended) * symtabcmd->nsyms);
665 for(i = 0, syment = symtab_std; i < symtabcmd->nsyms; i++, syment++)
669 for(i = 0, sym = symtab, syment = symtab_std; i < symtabcmd->nsyms; i++, sym++, syment++)
671 struct nlist *sym_follow, *sym_next = 0;
673 memset(sym, 0, sizeof(*sym));
675 sym->n_type = syment->n_type;
676 if ( syment->n_type & N_STAB ) /* Debug symbols are skipped */
679 memcpy(sym, syment, sizeof(*syment));
681 /* Find the following symbol in order to get the current symbol size */
682 for(j = 0, sym_follow = symtab_std; j < symtabcmd->nsyms; j++, sym_follow++) {
683 if ( sym_follow->n_type & N_STAB || !(sym_follow->n_value > sym->st_value))
686 sym_next = sym_follow;
689 if(!(sym_next->n_value > sym_follow->n_value))
691 sym_next = sym_follow;
694 sym->st_size = sym_next->n_value - sym->st_value;
696 sym->st_size = 10; /* XXX: text_sec_hdr->size + text_sec_hdr->offset - sym->st_value; */
698 sym->st_value += slide;
701 free((void*)symtab_std);
704 DPRINTF("saving symtab of %s (%d symbol(s))\n", filename, symtabcmd->nsyms);
706 s = malloc(sizeof(*s));
707 s->disas_symtab = symtab;
708 s->disas_strtab = strtab;
709 s->disas_num_syms = symtabcmd->nsyms;
715 if(mach_hdr.filetype == MH_EXECUTE && dyld_entry_point)
716 return dyld_entry_point;
718 return entry_point+slide;
721 extern unsigned long stack_size;
723 unsigned long setup_arg_pages(void * mh, char ** argv, char ** env)
725 unsigned long stack_base, error, size;
730 /* Create enough stack to hold everything. If we don't use
731 * it for args, we'll use it for something else...
735 error = target_mmap(0,
736 size + qemu_host_page_size,
737 PROT_READ | PROT_WRITE,
738 MAP_PRIVATE | MAP_ANONYMOUS,
743 /* we reserve one extra page at the top of the stack as guard */
744 target_mprotect(error + size, qemu_host_page_size, PROT_NONE);
746 stack_base = error + size;
747 stack = (void*)stack_base;
779 * sp-> | mh | address of where the a.out's file offset 0 is in memory
782 /* Construct the stack Stack grows down */
785 /* XXX: string should go up there */
790 /* Push the absolute path of our executable */
791 DPRINTF("pushing apple %s (0x%x)\n", (char*)argv[0], (int)argv[0]);
792 stl(stack, (int) argv[0]);
800 for(envc = 0; env[envc]; envc++);
802 for(i = envc-1; i >= 0; i--)
804 DPRINTF("pushing env %s (0x%x)\n", (char*)env[i], (int)env[i]);
805 stl(stack, (int)env[i]);
808 /* XXX: remove that when string will be on top of the stack */
809 page_set_flags((int)env[i], (int)(env[i]+strlen(env[i])), PROT_READ | PAGE_VALID);
812 /* Add on the stack the interp_prefix choosen if so */
816 asprintf(&dyld_root, "DYLD_ROOT_PATH=%s", interp_prefix);
817 page_set_flags((int)dyld_root, (int)(dyld_root+strlen(interp_prefix)+1), PROT_READ | PAGE_VALID);
819 stl(stack, (int)dyld_root);
823 #ifdef DONT_USE_DYLD_SHARED_MAP
825 char *shared_map_mode;
826 asprintf(&shared_map_mode, "DYLD_SHARED_REGION=avoid");
827 page_set_flags((int)shared_map_mode, (int)(shared_map_mode+strlen(shared_map_mode)+1), PROT_READ | PAGE_VALID);
829 stl(stack, (int)shared_map_mode);
834 #ifdef ACTIVATE_DYLD_TRACE
835 char * extra_env_static[] = {"DYLD_DEBUG_TRACE=yes",
836 "DYLD_PREBIND_DEBUG=3", "DYLD_UNKNOW_TRACE=yes",
837 "DYLD_PRINT_INITIALIZERS=yes",
838 "DYLD_PRINT_SEGMENTS=yes", "DYLD_PRINT_REBASINGS=yes", "DYLD_PRINT_BINDINGS=yes", "DYLD_PRINT_INITIALIZERS=yes", "DYLD_PRINT_WARNINGS=yes" };
840 char ** extra_env = malloc(sizeof(extra_env_static));
841 bcopy(extra_env_static, extra_env, sizeof(extra_env_static));
842 page_set_flags((int)extra_env, (int)((void*)extra_env+sizeof(extra_env_static)), PROT_READ | PAGE_VALID);
846 DPRINTF("pushing (extra) env %s (0x%x)\n", (char*)extra_env[i], (int)extra_env[i]);
847 stl(stack, (int) extra_env[i]);
856 for(argc = 0; argv[argc]; argc++);
858 for(i = argc-1; i >= 0; i--)
860 DPRINTF("pushing arg %s (0x%x)\n", (char*)argv[i], (int)argv[i]);
861 stl(stack, (int) argv[i]);
864 /* XXX: remove that when string will be on top of the stack */
865 page_set_flags((int)argv[i], (int)(argv[i]+strlen(argv[i])), PROT_READ | PAGE_VALID);
868 DPRINTF("pushing argc %d \n", argc);
872 DPRINTF("pushing mh 0x%x \n", (int)mh);
873 stl(stack, (int) mh);
875 /* Stack points on the mh */
876 return (unsigned long)stack;
879 int mach_exec(const char * filename, char ** argv, char ** envp,
880 struct target_pt_regs * regs)
882 int entrypoint, stack;
883 void * mh; /* the Mach Header that will be used by dyld */
885 DPRINTF("mach_exec at 0x%x\n", (int)mach_exec);
887 entrypoint = load_object(filename, regs, &mh);
888 stack = setup_arg_pages(mh, argv, envp);
889 #if defined(TARGET_I386)
890 regs->eip = entrypoint;
892 #elif defined(TARGET_PPC)
893 regs->nip = entrypoint;
894 regs->gpr[1] = stack;
896 DPRINTF("mach_exec returns eip set to 0x%x esp 0x%x mh 0x%x\n", entrypoint, stack, (int)mh);
899 qerror("%s: no entry point!\n", filename);