diff options
Diffstat (limited to 'gdb/gdbserver')
| -rw-r--r-- | gdb/gdbserver/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/gdbserver/linux-low.c | 47 |
2 files changed, 44 insertions, 7 deletions
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog index 25d9cb3..966b22f 100644 --- a/gdb/gdbserver/ChangeLog +++ b/gdb/gdbserver/ChangeLog @@ -1,3 +1,7 @@ +2012-04-10 Maciej W. Rozycki <macro@codesourcery.com> + + * linux-low.c (get_r_debug): Handle DT_MIPS_RLD_MAP. + 2012-04-05 Pedro Alves <palves@redhat.com> -Werror=strict-aliasing diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c index 043451d..f7a83f4 100644 --- a/gdb/gdbserver/linux-low.c +++ b/gdb/gdbserver/linux-low.c @@ -5419,7 +5419,9 @@ get_dynamic (const int pid, const int is_elf64) } /* Return &_r_debug in the inferior, or -1 if not present. Return value - can be 0 if the inferior does not yet have the library list initialized. */ + can be 0 if the inferior does not yet have the library list initialized. + We look for DT_MIPS_RLD_MAP first. MIPS executables use this instead of + DT_DEBUG, although they sometimes contain an unused DT_DEBUG entry too. */ static CORE_ADDR get_r_debug (const int pid, const int is_elf64) @@ -5427,19 +5429,35 @@ get_r_debug (const int pid, const int is_elf64) CORE_ADDR dynamic_memaddr; const int dyn_size = is_elf64 ? sizeof (Elf64_Dyn) : sizeof (Elf32_Dyn); unsigned char buf[sizeof (Elf64_Dyn)]; /* The larger of the two. */ + CORE_ADDR map = -1; dynamic_memaddr = get_dynamic (pid, is_elf64); if (dynamic_memaddr == 0) - return (CORE_ADDR) -1; + return map; while (linux_read_memory (dynamic_memaddr, buf, dyn_size) == 0) { if (is_elf64) { Elf64_Dyn *const dyn = (Elf64_Dyn *) buf; + union + { + Elf64_Xword map; + unsigned char buf[sizeof (Elf64_Xword)]; + } + rld_map; + + if (dyn->d_tag == DT_MIPS_RLD_MAP) + { + if (linux_read_memory (dyn->d_un.d_val, + rld_map.buf, sizeof (rld_map.buf)) == 0) + return rld_map.map; + else + break; + } - if (dyn->d_tag == DT_DEBUG) - return dyn->d_un.d_val; + if (dyn->d_tag == DT_DEBUG && map == -1) + map = dyn->d_un.d_val; if (dyn->d_tag == DT_NULL) break; @@ -5447,9 +5465,24 @@ get_r_debug (const int pid, const int is_elf64) else { Elf32_Dyn *const dyn = (Elf32_Dyn *) buf; + union + { + Elf32_Word map; + unsigned char buf[sizeof (Elf32_Word)]; + } + rld_map; + + if (dyn->d_tag == DT_MIPS_RLD_MAP) + { + if (linux_read_memory (dyn->d_un.d_val, + rld_map.buf, sizeof (rld_map.buf)) == 0) + return rld_map.map; + else + break; + } - if (dyn->d_tag == DT_DEBUG) - return dyn->d_un.d_val; + if (dyn->d_tag == DT_DEBUG && map == -1) + map = dyn->d_un.d_val; if (dyn->d_tag == DT_NULL) break; @@ -5458,7 +5491,7 @@ get_r_debug (const int pid, const int is_elf64) dynamic_memaddr += dyn_size; } - return (CORE_ADDR) -1; + return map; } /* Read one pointer from MEMADDR in the inferior. */ |