BFD: Extract PID from MIPS core dump file

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.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index b977944..8e61929 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,11 @@
 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.
        (elf_backend_write_core_note): New macro.
        * elf64-mips.c (elf64_mips_write_core_note): New function.

diff --git a/bfd/elf32-mips.c b/bfd/elf32-mips.c
index 3b48103..ec4e7d3 100644 (file)
--- a/bfd/elf32-mips.c
+++ b/bfd/elf32-mips.c
@@ -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

diff --git a/bfd/elf64-mips.c b/bfd/elf64-mips.c
index af0c01c..291a8a9 100644 (file)
--- a/bfd/elf64-mips.c
+++ b/bfd/elf64-mips.c
@@ -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

diff --git a/bfd/elfn32-mips.c b/bfd/elfn32-mips.c
index 8e5efa5..8de1ff4 100644 (file)
--- a/bfd/elfn32-mips.c
+++ b/bfd/elfn32-mips.c
@@ -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