diff options
| author | comex | 2015-03-01 19:35:12 -0500 |
|---|---|---|
| committer | comex | 2015-03-01 19:35:12 -0500 |
| commit | f3456372119e32c13b7bbe059f6c73815b7361cf (patch) | |
| tree | e4225e52f5f9299e56588bf6da09a28109a545d4 /lib/darwin/inject.c | |
| parent | minor changes (diff) | |
| download | substitute-f3456372119e32c13b7bbe059f6c73815b7361cf.tar.gz | |
fix stack alignment
Diffstat (limited to '')
| -rw-r--r-- | lib/darwin/inject.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/darwin/inject.c b/lib/darwin/inject.c index 6e0c50e..0f67ccb 100644 --- a/lib/darwin/inject.c +++ b/lib/darwin/inject.c @@ -381,7 +381,7 @@ got_symbol:; return true; } -static int do_baton(const char *filename, size_t filelen, bool is64, +static int do_baton(const char *filename, size_t filelen, cpu_type_t cputype, mach_vm_address_t target_stackpage_end, mach_vm_address_t *target_stack_top_p, uint64_t sym_addrs[static 5], @@ -391,13 +391,16 @@ static int do_baton(const char *filename, size_t filelen, bool is64, mach_port_t task, char **error) { int ret; + bool is64 = !!(cputype & CPU_ARCH_ABI64); size_t baton_len = 8 * (is64 ? 8 : 4); size_t shuttles_len = nshuttle * sizeof(struct shuttle); size_t filelen_rounded = (filelen + 7) & ~7; size_t total_len = baton_len + shuttles_len + filelen_rounded; mach_vm_address_t target_stack_top = target_stackpage_end - total_len; - target_stack_top &= ~7; + target_stack_top &= ~15; + if (cputype == CPU_TYPE_X86_64) + target_stack_top -= 8; *target_stack_top_p = target_stack_top; char *stackbuf = calloc(total_len, 1); if (!stackbuf) { @@ -639,7 +642,7 @@ int substitute_dlopen_in_pid(int pid, const char *filename, int options, dlsym_addr, munmap_addr}; mach_vm_address_t target_stack_top; - if ((ret = do_baton(filename, filelen, cputype & CPU_ARCH_ABI64, + if ((ret = do_baton(filename, filelen, cputype, target_code_page, &target_stack_top, sym_addrs, shuttle, nshuttle, &target_shuttle, &sem_port, task, error))) |