diff options
| author | Eric Andersen <andersen@codepoet.org> | 2004-05-12 23:11:30 +0000 |
|---|---|---|
| committer | Eric Andersen <andersen@codepoet.org> | 2004-05-12 23:11:30 +0000 |
| commit | 8525fd1b9781796c8ccd560f777a5e41c2de7d8b (patch) | |
| tree | d8ea8844f5c1dfe253437ec5e781af0aabf4accc | |
| parent | b8361e2e12f612cf302bc03c2c9e7a648c37a84e (diff) | |
Patch from Bradley D. LaRonde:
ld.so mprotect rwx .dyanmic segment for mips DT_DEBUG
Allow writing debug_addr into the .dynamic segment.
Even though the program header is marked RWE, the kernel
gives it to us rx.
| -rw-r--r-- | ldso/ldso/dl-startup.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/ldso/ldso/dl-startup.c b/ldso/ldso/dl-startup.c index 1bb480e86..9b6ef76c6 100644 --- a/ldso/ldso/dl-startup.c +++ b/ldso/ldso/dl-startup.c @@ -377,13 +377,18 @@ found_got: } app_tpnt->dynamic_info[dpnt->d_tag] = dpnt->d_un.d_val; -#warning "Debugging threads on mips won't work till someone fixes this..." -#if 0 if (dpnt->d_tag == DT_DEBUG) { + /* Allow writing debug_addr into the .dynamic segment. + * Even though the program header is marked RWE, the kernel gives + * it to us rx. + */ + Elf32_Addr mpa = (ppnt->p_vaddr + app_tpnt->loadaddr) & ~(_dl_pagesize - 1); + if(_dl_mprotect(mpa, ppnt->p_memsz, PROT_READ | PROT_WRITE | PROT_EXEC)) { + SEND_STDERR("Couldn't mprotect .dynamic segment to rwx.\n"); + _dl_exit(0); + } dpnt->d_un.d_val = (unsigned long) debug_addr; } -#endif - #else if (dpnt->d_tag > DT_JMPREL) { dpnt++; |