diff options
Diffstat (limited to 'darwin-user/machload.c')
| -rw-r--r-- | darwin-user/machload.c | 902 |
1 files changed, 0 insertions, 902 deletions
diff --git a/darwin-user/machload.c b/darwin-user/machload.c deleted file mode 100644 index 26dd293686..0000000000 --- a/darwin-user/machload.c +++ /dev/null @@ -1,902 +0,0 @@ -/* - * Mach-O object file loading - * - * Copyright (c) 2006 Pierre d'Herbemont - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ -#include <stdio.h> -#include <sys/types.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <errno.h> -#include <unistd.h> -#include <sys/mman.h> -#include <stdlib.h> -#include <string.h> - -#include "qemu.h" -#include "disas.h" - -#include <mach-o/loader.h> -#include <mach-o/fat.h> -#include <mach-o/nlist.h> -#include <mach-o/reloc.h> -#include <mach-o/ppc/reloc.h> - -//#define DEBUG_MACHLOAD - -#ifdef DEBUG_MACHLOAD -# define DPRINTF(...) do { qemu_log(__VA_ARGS__); printf(__VA_ARGS__); } while(0) -#else -# define DPRINTF(...) do { qemu_log(__VA_ARGS__); } while(0) -#endif - -# define check_mach_header(x) (x.magic == MH_CIGAM) - -extern const char *interp_prefix; - -/* we don't have a good implementation for this */ -#define DONT_USE_DYLD_SHARED_MAP - -/* Pass extra arg to DYLD for debug */ -//#define ACTIVATE_DYLD_TRACE - -//#define OVERRIDE_DYLINKER - -#ifdef OVERRIDE_DYLINKER -# ifdef TARGET_I386 -# define DYLINKER_NAME "/Users/steg/qemu/tests/i386-darwin-env/usr/lib/dyld" -# else -# define DYLINKER_NAME "/usr/lib/dyld" -# endif -#endif - -/* XXX: in an include */ -struct nlist_extended -{ - union { - char *n_name; - long n_strx; - } n_un; - unsigned char n_type; - unsigned char n_sect; - short st_desc; - unsigned long st_value; - unsigned long st_size; -}; - -/* Print symbols in gdb */ -void *macho_text_sect = 0; -int macho_offset = 0; - -int load_object(const char *filename, struct target_pt_regs * regs, void ** mh); - -#ifdef TARGET_I386 -typedef struct mach_i386_thread_state { - unsigned int eax; - unsigned int ebx; - unsigned int ecx; - unsigned int edx; - unsigned int edi; - unsigned int esi; - unsigned int ebp; - unsigned int esp; - unsigned int ss; - unsigned int eflags; - unsigned int eip; - unsigned int cs; - unsigned int ds; - unsigned int es; - unsigned int fs; - unsigned int gs; -} mach_i386_thread_state_t; - -void bswap_i386_thread_state(struct mach_i386_thread_state *ts) -{ - bswap32s((uint32_t*)&ts->eax); - bswap32s((uint32_t*)&ts->ebx); - bswap32s((uint32_t*)&ts->ecx); - bswap32s((uint32_t*)&ts->edx); - bswap32s((uint32_t*)&ts->edi); - bswap32s((uint32_t*)&ts->esi); - bswap32s((uint32_t*)&ts->ebp); - bswap32s((uint32_t*)&ts->esp); - bswap32s((uint32_t*)&ts->ss); - bswap32s((uint32_t*)&ts->eflags); - bswap32s((uint32_t*)&ts->eip); - bswap32s((uint32_t*)&ts->cs); - bswap32s((uint32_t*)&ts->ds); - bswap32s((uint32_t*)&ts->es); - bswap32s((uint32_t*)&ts->fs); - bswap32s((uint32_t*)&ts->gs); -} -#define target_thread_state mach_i386_thread_state -#define TARGET_CPU_TYPE CPU_TYPE_I386 -#define TARGET_CPU_NAME "i386" -#endif - -#ifdef TARGET_PPC -struct mach_ppc_thread_state { - unsigned int srr0; /* Instruction address register (PC) */ - unsigned int srr1; /* Machine state register (supervisor) */ - unsigned int r0; - unsigned int r1; - unsigned int r2; - unsigned int r3; - unsigned int r4; - unsigned int r5; - unsigned int r6; - unsigned int r7; - unsigned int r8; - unsigned int r9; - unsigned int r10; - unsigned int r11; - unsigned int r12; - unsigned int r13; - unsigned int r14; - unsigned int r15; - unsigned int r16; - unsigned int r17; - unsigned int r18; - unsigned int r19; - unsigned int r20; - unsigned int r21; - unsigned int r22; - unsigned int r23; - unsigned int r24; - unsigned int r25; - unsigned int r26; - unsigned int r27; - unsigned int r28; - unsigned int r29; - unsigned int r30; - unsigned int r31; - - unsigned int cr; /* Condition register */ - unsigned int xer; /* User's integer exception register */ - unsigned int lr; /* Link register */ - unsigned int ctr; /* Count register */ - unsigned int mq; /* MQ register (601 only) */ - - unsigned int vrsave; /* Vector Save Register */ -}; - -void bswap_ppc_thread_state(struct mach_ppc_thread_state *ts) -{ - bswap32s((uint32_t*)&ts->srr0); - bswap32s((uint32_t*)&ts->srr1); - bswap32s((uint32_t*)&ts->r0); - bswap32s((uint32_t*)&ts->r1); - bswap32s((uint32_t*)&ts->r2); - bswap32s((uint32_t*)&ts->r3); - bswap32s((uint32_t*)&ts->r4); - bswap32s((uint32_t*)&ts->r5); - bswap32s((uint32_t*)&ts->r6); - bswap32s((uint32_t*)&ts->r7); - bswap32s((uint32_t*)&ts->r8); - bswap32s((uint32_t*)&ts->r9); - bswap32s((uint32_t*)&ts->r10); - bswap32s((uint32_t*)&ts->r11); - bswap32s((uint32_t*)&ts->r12); - bswap32s((uint32_t*)&ts->r13); - bswap32s((uint32_t*)&ts->r14); - bswap32s((uint32_t*)&ts->r15); - bswap32s((uint32_t*)&ts->r16); - bswap32s((uint32_t*)&ts->r17); - bswap32s((uint32_t*)&ts->r18); - bswap32s((uint32_t*)&ts->r19); - bswap32s((uint32_t*)&ts->r20); - bswap32s((uint32_t*)&ts->r21); - bswap32s((uint32_t*)&ts->r22); - bswap32s((uint32_t*)&ts->r23); - bswap32s((uint32_t*)&ts->r24); - bswap32s((uint32_t*)&ts->r25); - bswap32s((uint32_t*)&ts->r26); - bswap32s((uint32_t*)&ts->r27); - bswap32s((uint32_t*)&ts->r28); - bswap32s((uint32_t*)&ts->r29); - bswap32s((uint32_t*)&ts->r30); - bswap32s((uint32_t*)&ts->r31); - - bswap32s((uint32_t*)&ts->cr); - bswap32s((uint32_t*)&ts->xer); - bswap32s((uint32_t*)&ts->lr); - bswap32s((uint32_t*)&ts->ctr); - bswap32s((uint32_t*)&ts->mq); - - bswap32s((uint32_t*)&ts->vrsave); -} - -#define target_thread_state mach_ppc_thread_state -#define TARGET_CPU_TYPE CPU_TYPE_POWERPC -#define TARGET_CPU_NAME "PowerPC" -#endif - -struct target_thread_command { - unsigned long cmd; /* LC_THREAD or LC_UNIXTHREAD */ - unsigned long cmdsize; /* total size of this command */ - unsigned long flavor; /* flavor of thread state */ - unsigned long count; /* count of longs in thread state */ - struct target_thread_state state; /* thread state for this flavor */ -}; - -void bswap_tc(struct target_thread_command *tc) -{ - bswap32s((uint32_t*)(&tc->flavor)); - bswap32s((uint32_t*)&tc->count); -#if defined(TARGET_I386) - bswap_i386_thread_state(&tc->state); -#elif defined(TARGET_PPC) - bswap_ppc_thread_state(&tc->state); -#else -# error unknown TARGET_CPU_TYPE -#endif -} - -void bswap_mh(struct mach_header *mh) -{ - bswap32s((uint32_t*)(&mh->magic)); - bswap32s((uint32_t*)&mh->cputype); - bswap32s((uint32_t*)&mh->cpusubtype); - bswap32s((uint32_t*)&mh->filetype); - bswap32s((uint32_t*)&mh->ncmds); - bswap32s((uint32_t*)&mh->sizeofcmds); - bswap32s((uint32_t*)&mh->flags); -} - -void bswap_lc(struct load_command *lc) -{ - bswap32s((uint32_t*)&lc->cmd); - bswap32s((uint32_t*)&lc->cmdsize); -} - - -void bswap_fh(struct fat_header *fh) -{ - bswap32s((uint32_t*)&fh->magic); - bswap32s((uint32_t*)&fh->nfat_arch); -} - -void bswap_fa(struct fat_arch *fa) -{ - bswap32s((uint32_t*)&fa->cputype); - bswap32s((uint32_t*)&fa->cpusubtype); - bswap32s((uint32_t*)&fa->offset); - bswap32s((uint32_t*)&fa->size); - bswap32s((uint32_t*)&fa->align); -} - -void bswap_segcmd(struct segment_command *sc) -{ - bswap32s((uint32_t*)&sc->vmaddr); - bswap32s((uint32_t*)&sc->vmsize); - bswap32s((uint32_t*)&sc->fileoff); - bswap32s((uint32_t*)&sc->filesize); - bswap32s((uint32_t*)&sc->maxprot); - bswap32s((uint32_t*)&sc->initprot); - bswap32s((uint32_t*)&sc->nsects); - bswap32s((uint32_t*)&sc->flags); -} - -void bswap_symtabcmd(struct symtab_command *stc) -{ - bswap32s((uint32_t*)&stc->cmd); - bswap32s((uint32_t*)&stc->cmdsize); - bswap32s((uint32_t*)&stc->symoff); - bswap32s((uint32_t*)&stc->nsyms); - bswap32s((uint32_t*)&stc->stroff); - bswap32s((uint32_t*)&stc->strsize); -} - -void bswap_sym(struct nlist *n) -{ - bswap32s((uint32_t*)&n->n_un.n_strx); - bswap16s((uint16_t*)&n->n_desc); - bswap32s((uint32_t*)&n->n_value); -} - -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) -{ - int entry; - if(need_bswap) - bswap_tc(tc); -#if defined(TARGET_I386) - entry = tc->state.eip; - 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", - tc->state.eax, tc->state.ebx, tc->state.ecx, tc->state.edx, tc->state.edi, tc->state.esi, tc->state.ebp, - tc->state.esp, tc->state.ss, tc->state.eflags, tc->state.eip, tc->state.cs, tc->state.ds, tc->state.es, - tc->state.fs, tc->state.gs ); -#define reg_copy(reg) regs->reg = tc->state.reg - if(regs) - { - reg_copy(eax); - reg_copy(ebx); - reg_copy(ecx); - reg_copy(edx); - - reg_copy(edi); - reg_copy(esi); - - reg_copy(ebp); - reg_copy(esp); - - reg_copy(eflags); - reg_copy(eip); - /* - reg_copy(ss); - reg_copy(cs); - reg_copy(ds); - reg_copy(es); - reg_copy(fs); - reg_copy(gs);*/ - } -#undef reg_copy -#elif defined(TARGET_PPC) - entry = tc->state.srr0; -#endif - DPRINTF("load_thread: entry 0x%x\n", entry); - return entry; -} - -int load_dylinker(struct mach_header *mh, struct dylinker_command *dc, int fd, int mh_pos, int need_bswap) -{ - int size; - char * dylinker_name; - size = dc->cmdsize - sizeof(struct dylinker_command); - - if(need_bswap) - dylinker_name = (char*)(bswap_32(dc->name.offset)+(int)dc); - else - dylinker_name = (char*)((dc->name.offset)+(int)dc); - -#ifdef OVERRIDE_DYLINKER - dylinker_name = DYLINKER_NAME; -#else - if(asprintf(&dylinker_name, "%s%s", interp_prefix, dylinker_name) == -1) - qerror("can't allocate the new dylinker name\n"); -#endif - - DPRINTF("dylinker_name %s\n", dylinker_name); - return load_object(dylinker_name, NULL, NULL); -} - -int load_segment(struct mach_header *mh, struct segment_command *sc, int fd, int mh_pos, int need_bswap, int fixed, int slide) -{ - unsigned long addr = sc->vmaddr; - unsigned long size = sc->filesize; - unsigned long error = 0; - - if(need_bswap) - bswap_segcmd(sc); - - if(sc->vmaddr == 0) - { - DPRINTF("load_segment: sc->vmaddr == 0 returning\n"); - return -1; - } - - if (strcmp(sc->segname, "__PAGEZERO") == 0) - { - DPRINTF("load_segment: __PAGEZERO returning\n"); - return -1; - } - - /* Right now mmap memory */ - /* XXX: should check to see that the space is free, because MAP_FIXED is dangerous */ - DPRINTF("load_segment: mmaping %s to 0x%x-(0x%x|0x%x) + 0x%x\n", sc->segname, sc->vmaddr, sc->filesize, sc->vmsize, slide); - - if(sc->filesize > 0) - { - int opt = 0; - - if(fixed) - opt |= MAP_FIXED; - - DPRINTF("sc->vmaddr 0x%x slide 0x%x add 0x%x\n", slide, sc->vmaddr, sc->vmaddr+slide); - - addr = target_mmap(sc->vmaddr+slide, sc->filesize, sc->initprot, opt, fd, mh_pos + sc->fileoff); - - if(addr==-1) - qerror("load_segment: can't mmap at 0x%x\n", sc->vmaddr+slide); - - error = addr-sc->vmaddr; - } - else - { - addr = sc->vmaddr+slide; - error = slide; - } - - if(sc->vmsize > sc->filesize) - { - addr += sc->filesize; - size = sc->vmsize-sc->filesize; - addr = target_mmap(addr, size, sc->initprot, MAP_ANONYMOUS | MAP_FIXED, -1, 0); - if(addr==-1) - qerror("load_segment: can't mmap at 0x%x\n", sc->vmaddr+slide); - } - - return error; -} - -void *load_data(int fd, long offset, unsigned int size) -{ - char *data; - - data = malloc(size); - if (!data) - return NULL; - lseek(fd, offset, SEEK_SET); - if (read(fd, data, size) != size) { - free(data); - return NULL; - } - return data; -} - -/* load a mach-o object file */ -int load_object(const char *filename, struct target_pt_regs * regs, void ** mh) -{ - int need_bswap = 0; - int entry_point = 0; - int dyld_entry_point = 0; - int slide, mmapfixed; - int fd; - struct load_command *lcmds, *lc; - int is_fat = 0; - unsigned int i, magic; - int mach_hdr_pos = 0; - struct mach_header mach_hdr; - - /* for symbol lookup with -d flag. */ - struct symtab_command * symtabcmd = 0; - struct nlist_extended *symtab, *sym; - struct nlist *symtab_std, *syment; - char *strtab; - - fd = open(filename, O_RDONLY); - if (fd < 0) - qerror("can't open file '%s'", filename); - - /* Read magic header. */ - if (read(fd, &magic, sizeof (magic)) != sizeof (magic)) - qerror("unable to read Magic of '%s'", filename); - - /* Check Mach identification. */ - if(magic == MH_MAGIC) - { - is_fat = 0; - need_bswap = 0; - } else if (magic == MH_CIGAM) - { - is_fat = 0; - need_bswap = 1; - } else if (magic == FAT_MAGIC) - { - is_fat = 1; - need_bswap = 0; - } else if (magic == FAT_CIGAM) - { - is_fat = 1; - need_bswap = 1; - } - else - qerror("Not a Mach-O file.", filename); - - DPRINTF("loading %s %s...\n", filename, is_fat ? "[FAT]": "[REGULAR]"); - if(is_fat) - { - int found = 0; - struct fat_header fh; - struct fat_arch *fa; - - lseek(fd, 0, SEEK_SET); - - /* Read Fat header. */ - if (read(fd, &fh, sizeof (fh)) != sizeof (fh)) - qerror("unable to read file header"); - - if(need_bswap) - bswap_fh(&fh); - - /* Read Fat Arch. */ - fa = malloc(sizeof(struct fat_arch)*fh.nfat_arch); - - if (read(fd, fa, sizeof(struct fat_arch)*fh.nfat_arch) != sizeof(struct fat_arch)*fh.nfat_arch) - qerror("unable to read file header"); - - for( i = 0; i < fh.nfat_arch; i++, fa++) - { - if(need_bswap) - bswap_fa(fa); - if(fa->cputype == TARGET_CPU_TYPE) - { - mach_hdr_pos = fa->offset; - lseek(fd, mach_hdr_pos, SEEK_SET); - - /* Read Mach header. */ - - if (read(fd, &mach_hdr, sizeof(struct mach_header)) != sizeof (struct mach_header)) - qerror("unable to read file header"); - - if(mach_hdr.magic == MH_MAGIC) - need_bswap = 0; - else if (mach_hdr.magic == MH_CIGAM) - need_bswap = 1; - else - qerror("Invalid mach header in Fat Mach-O File"); - found = 1; - break; - } - } - if(!found) - qerror("%s: No %s CPU found in FAT Header", filename, TARGET_CPU_NAME); - } - else - { - lseek(fd, 0, SEEK_SET); - /* Read Mach header */ - if (read(fd, &mach_hdr, sizeof (mach_hdr)) != sizeof (mach_hdr)) - qerror("%s: unable to read file header", filename); - } - - if(need_bswap) - bswap_mh(&mach_hdr); - - if ((mach_hdr.cputype) != TARGET_CPU_TYPE) - qerror("%s: Unsupported CPU 0x%x (only 0x%x(%s) supported)", filename, mach_hdr.cputype, TARGET_CPU_TYPE, TARGET_CPU_NAME); - - - switch(mach_hdr.filetype) - { - case MH_EXECUTE: break; - case MH_FVMLIB: - case MH_DYLIB: - case MH_DYLINKER: break; - default: - qerror("%s: Unsupported Mach type (0x%x)", filename, mach_hdr.filetype); - } - - /* read segment headers */ - lcmds = malloc(mach_hdr.sizeofcmds); - - if(read(fd, lcmds, mach_hdr.sizeofcmds) != mach_hdr.sizeofcmds) - qerror("%s: unable to read load_command", filename); - slide = 0; - mmapfixed = 0; - for(i=0, lc = lcmds; i < (mach_hdr.ncmds) ; i++) - { - - if(need_bswap) - bswap_lc(lc); - switch(lc->cmd) - { - case LC_SEGMENT: - /* The main_exe can't be relocated */ - if(mach_hdr.filetype == MH_EXECUTE) - mmapfixed = 1; - - slide = load_segment(&mach_hdr, (struct segment_command*)lc, fd, mach_hdr_pos, need_bswap, mmapfixed, slide); - - /* other segment must be mapped according to slide exactly, if load_segment did something */ - if(slide != -1) - mmapfixed = 1; - else - slide = 0; /* load_segment didn't map the segment */ - - if(mach_hdr.filetype == MH_EXECUTE && slide != 0) - qerror("%s: Warning executable can't be mapped at the right address (offset: 0x%x)\n", filename, slide); - - if(strcmp(((struct segment_command*)(lc))->segname, "__TEXT") == 0) - { - /* Text section */ - if(mach_hdr.filetype == MH_EXECUTE) - { - /* return the mach_header */ - *mh = (void*)(((struct segment_command*)(lc))->vmaddr + slide); - } - else - { - /* it is dyld save the section for gdb, we will be interested in dyld symbol - while debuging */ - macho_text_sect = (void*)(((struct segment_command*)(lc))->vmaddr + slide); - macho_offset = slide; - } - } - break; - case LC_LOAD_DYLINKER: - dyld_entry_point = load_dylinker( &mach_hdr, (struct dylinker_command*)lc, fd, mach_hdr_pos, need_bswap ); - break; - case LC_LOAD_DYLIB: - /* dyld will do that for us */ - break; - case LC_THREAD: - case LC_UNIXTHREAD: - { - struct target_pt_regs * _regs; - if(mach_hdr.filetype == MH_DYLINKER) - _regs = regs; - else - _regs = 0; - entry_point = load_thread( &mach_hdr, (struct target_thread_command*)lc, _regs, fd, mach_hdr_pos, need_bswap ); - } - break; - case LC_SYMTAB: - /* Save the symtab and strtab */ - symtabcmd = (struct symtab_command *)lc; - break; - case LC_ID_DYLINKER: - case LC_ID_DYLIB: - case LC_UUID: - case LC_DYSYMTAB: - case LC_TWOLEVEL_HINTS: - case LC_PREBIND_CKSUM: - case LC_SUB_LIBRARY: - break; - default: fprintf(stderr, "warning: unknown command 0x%x in '%s'\n", lc->cmd, filename); - } - lc = (struct load_command*)((int)(lc)+(lc->cmdsize)); - } - - if(symtabcmd) - { - if(need_bswap) - bswap_symtabcmd(symtabcmd); - - symtab_std = load_data(fd, symtabcmd->symoff+mach_hdr_pos, symtabcmd->nsyms * sizeof(struct nlist)); - strtab = load_data(fd, symtabcmd->stroff+mach_hdr_pos, symtabcmd->strsize); - - symtab = malloc(sizeof(struct nlist_extended) * symtabcmd->nsyms); - - if(need_bswap) - { - for(i = 0, syment = symtab_std; i < symtabcmd->nsyms; i++, syment++) - bswap_sym(syment); - } - - for(i = 0, sym = symtab, syment = symtab_std; i < symtabcmd->nsyms; i++, sym++, syment++) - { - struct nlist *sym_follow, *sym_next = 0; - unsigned int j; - memset(sym, 0, sizeof(*sym)); - - sym->n_type = syment->n_type; - if ( syment->n_type & N_STAB ) /* Debug symbols are skipped */ - continue; - - memcpy(sym, syment, sizeof(*syment)); - - /* Find the following symbol in order to get the current symbol size */ - for(j = 0, sym_follow = symtab_std; j < symtabcmd->nsyms; j++, sym_follow++) { - if ( sym_follow->n_type & N_STAB || !(sym_follow->n_value > sym->st_value)) - continue; - if(!sym_next) { - sym_next = sym_follow; - continue; - } - if(!(sym_next->n_value > sym_follow->n_value)) - continue; - sym_next = sym_follow; - } - if(sym_next) - sym->st_size = sym_next->n_value - sym->st_value; - else - sym->st_size = 10; /* XXX: text_sec_hdr->size + text_sec_hdr->offset - sym->st_value; */ - - sym->st_value += slide; - } - - free((void*)symtab_std); - - { - DPRINTF("saving symtab of %s (%d symbol(s))\n", filename, symtabcmd->nsyms); - struct syminfo *s; - s = malloc(sizeof(*s)); - s->disas_symtab = symtab; - s->disas_strtab = strtab; - s->disas_num_syms = symtabcmd->nsyms; - s->next = syminfos; - syminfos = s; - } - } - close(fd); - if(mach_hdr.filetype == MH_EXECUTE && dyld_entry_point) - return dyld_entry_point; - else - return entry_point+slide; -} - -extern unsigned long stack_size; - -unsigned long setup_arg_pages(void * mh, char ** argv, char ** env) -{ - unsigned long stack_base, error, size; - int i; - int * stack; - int argc, envc; - - /* Create enough stack to hold everything. If we don't use - * it for args, we'll use it for something else... - */ - size = stack_size; - - error = target_mmap(0, - size + qemu_host_page_size, - PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, - -1, 0); - if (error == -1) - qerror("stk mmap"); - - /* we reserve one extra page at the top of the stack as guard */ - target_mprotect(error + size, qemu_host_page_size, PROT_NONE); - - stack_base = error + size; - stack = (void*)stack_base; -/* - * | STRING AREA | - * +-------------+ - * | 0 | -* +-------------+ - * | apple[n] | - * +-------------+ - * : - * +-------------+ - * | apple[0] | - * +-------------+ - * | 0 | - * +-------------+ - * | env[n] | - * +-------------+ - * : - * : - * +-------------+ - * | env[0] | - * +-------------+ - * | 0 | - * +-------------+ - * | arg[argc-1] | - * +-------------+ - * : - * : - * +-------------+ - * | arg[0] | - * +-------------+ - * | argc | - * +-------------+ - * sp-> | mh | address of where the a.out's file offset 0 is in memory - * +-------------+ -*/ - /* Construct the stack Stack grows down */ - stack--; - - /* XXX: string should go up there */ - - *stack = 0; - stack--; - - /* Push the absolute path of our executable */ - DPRINTF("pushing apple %s (0x%x)\n", (char*)argv[0], (int)argv[0]); - stl(stack, (int) argv[0]); - - stack--; - - stl(stack, 0); - stack--; - - /* Get envc */ - for(envc = 0; env[envc]; envc++); - - for(i = envc-1; i >= 0; i--) - { - DPRINTF("pushing env %s (0x%x)\n", (char*)env[i], (int)env[i]); - stl(stack, (int)env[i]); - stack--; - - /* XXX: remove that when string will be on top of the stack */ - page_set_flags((int)env[i], (int)(env[i]+strlen(env[i])), PROT_READ | PAGE_VALID); - } - - /* Add on the stack the interp_prefix chosen if so */ - if(interp_prefix[0]) - { - char *dyld_root; - asprintf(&dyld_root, "DYLD_ROOT_PATH=%s", interp_prefix); - page_set_flags((int)dyld_root, (int)(dyld_root+strlen(interp_prefix)+1), PROT_READ | PAGE_VALID); - - stl(stack, (int)dyld_root); - stack--; - } - -#ifdef DONT_USE_DYLD_SHARED_MAP - { - char *shared_map_mode; - asprintf(&shared_map_mode, "DYLD_SHARED_REGION=avoid"); - page_set_flags((int)shared_map_mode, (int)(shared_map_mode+strlen(shared_map_mode)+1), PROT_READ | PAGE_VALID); - - stl(stack, (int)shared_map_mode); - stack--; - } -#endif - -#ifdef ACTIVATE_DYLD_TRACE - char * extra_env_static[] = {"DYLD_DEBUG_TRACE=yes", - "DYLD_PREBIND_DEBUG=3", "DYLD_UNKNOW_TRACE=yes", - "DYLD_PRINT_INITIALIZERS=yes", - "DYLD_PRINT_SEGMENTS=yes", "DYLD_PRINT_REBASINGS=yes", "DYLD_PRINT_BINDINGS=yes", "DYLD_PRINT_INITIALIZERS=yes", "DYLD_PRINT_WARNINGS=yes" }; - - char ** extra_env = malloc(sizeof(extra_env_static)); - bcopy(extra_env_static, extra_env, sizeof(extra_env_static)); - page_set_flags((int)extra_env, (int)((void*)extra_env+sizeof(extra_env_static)), PROT_READ | PAGE_VALID); - - for(i = 0; i<9; i++) - { - DPRINTF("pushing (extra) env %s (0x%x)\n", (char*)extra_env[i], (int)extra_env[i]); - stl(stack, (int) extra_env[i]); - stack--; - } -#endif - - stl(stack, 0); - stack--; - - /* Get argc */ - for(argc = 0; argv[argc]; argc++); - - for(i = argc-1; i >= 0; i--) - { - DPRINTF("pushing arg %s (0x%x)\n", (char*)argv[i], (int)argv[i]); - stl(stack, (int) argv[i]); - stack--; - - /* XXX: remove that when string will be on top of the stack */ - page_set_flags((int)argv[i], (int)(argv[i]+strlen(argv[i])), PROT_READ | PAGE_VALID); - } - - DPRINTF("pushing argc %d\n", argc); - stl(stack, argc); - stack--; - - DPRINTF("pushing mh 0x%x\n", (int)mh); - stl(stack, (int) mh); - - /* Stack points on the mh */ - return (unsigned long)stack; -} - -int mach_exec(const char * filename, char ** argv, char ** envp, - struct target_pt_regs * regs) -{ - int entrypoint, stack; - void * mh; /* the Mach Header that will be used by dyld */ - - DPRINTF("mach_exec at 0x%x\n", (int)mach_exec); - - entrypoint = load_object(filename, regs, &mh); - stack = setup_arg_pages(mh, argv, envp); -#if defined(TARGET_I386) - regs->eip = entrypoint; - regs->esp = stack; -#elif defined(TARGET_PPC) - regs->nip = entrypoint; - regs->gpr[1] = stack; -#endif - DPRINTF("mach_exec returns eip set to 0x%x esp 0x%x mh 0x%x\n", entrypoint, stack, (int)mh); - - if(!entrypoint) - qerror("%s: no entry point!\n", filename); - - return 0; -} |