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BFD: Extract PID from MIPS core dump file

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On MIPS o32, n32 and n64 platforms, PID information was not
correctly propagated from core dump file to internal GDB
structures.  This patch fixes that behavior.

A correct PID is needed by `libthread_db' library supplied with
glibc repository revisions before commit c579f48edba8 ("Remove
cached PID/TID in clone") or released versions before 2.25 for
GDB to fetch value of TLS variable from core file.

bfd/ChangeLog:

	* elf32-mips.c (elf32_mips_grok_psinfo): Extract core->pid.
	* elf64-mips.c (elf64_mips_grok_psinfo): Likewise.
	* elfn32-mips.c (elf32_mips_grok_psinfo): Likewise.
This commit is contained in:
Djordje Todorovic 2017-11-08 21:19:05 +00:00 committed by Maciej W. Rozycki
parent 9031cb4af0
commit c9ec0e8945
4 changed files with 12 additions and 0 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
2017-11-08 Djordje Todorovic <djordje.todorovic@rt-rk.com>
* elf32-mips.c (elf32_mips_grok_psinfo): Extract core->pid.
* elf64-mips.c (elf64_mips_grok_psinfo): Likewise.
* elfn32-mips.c (elf32_mips_grok_psinfo): Likewise.
2017-11-08 Djordje Todorovic <djordje.todorovic@rt-rk.com>
* elf32-mips.c (elf32_mips_write_core_note): New function.

2
bfd/elf32-mips.c
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@ -2353,6 +2353,8 @@ elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
return FALSE;
case 128: /* Linux/MIPS elf_prpsinfo */
elf_tdata (abfd)->core->pid
= bfd_get_32 (abfd, note->descdata + 16);
elf_tdata (abfd)->core->program
= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
elf_tdata (abfd)->core->command

2
bfd/elf64-mips.c
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@ -4228,6 +4228,8 @@ elf64_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
return FALSE;
case 136: /* Linux/MIPS - N64 kernel elf_prpsinfo */
elf_tdata (abfd)->core->pid
= bfd_get_32 (abfd, note->descdata + 24);
elf_tdata (abfd)->core->program
= _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
elf_tdata (abfd)->core->command

2
bfd/elfn32-mips.c
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@ -3562,6 +3562,8 @@ elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
return FALSE;
case 128: /* Linux/MIPS elf_prpsinfo */
elf_tdata (abfd)->core->pid
= bfd_get_32 (abfd, note->descdata + 16);
elf_tdata (abfd)->core->program
= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
elf_tdata (abfd)->core->command