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Add Solaris specific ELF note processing
Add elfcore_grok_solaris_note function that enables to obtain process status, register values, and program info from Solaris's core files. bfd/ * elf.c (elfcore_grok_solaris_note): Solaris specific ELF note parser. Better GDB's coredump analysis on Solaris... (elfcore_grok_solaris_note_impl): New function. (elfcore_grok_solaris_prstatus): New function. (elfcore_grok_solaris_info): New function. (elfcore_grok_solaris_lwpstatus): New function. (elf_parse_notes): Added "CORE" groker element. include/ * elf/common.h: Add note segment constants for core files on Solaris systems.
This commit is contained in:
Libor Bukata
Alan Modra
parent
98ca73afe5
commit
6420dd27cb
194
bfd/elf.c
194
bfd/elf.c
@ -11057,6 +11057,195 @@ elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note)
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return true;
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}
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/* Processes Solaris's process status note.
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sig_off ~ offsetof(prstatus_t, pr_cursig)
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pid_off ~ offsetof(prstatus_t, pr_pid)
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lwpid_off ~ offsetof(prstatus_t, pr_who)
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gregset_size ~ sizeof(gregset_t)
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gregset_offset ~ offsetof(prstatus_t, pr_reg) */
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static bool
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elfcore_grok_solaris_prstatus (bfd *abfd, Elf_Internal_Note* note, int sig_off,
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int pid_off, int lwpid_off, size_t gregset_size,
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size_t gregset_offset)
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{
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asection *sect = NULL;
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elf_tdata (abfd)->core->signal
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= bfd_get_16 (abfd, note->descdata + sig_off);
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elf_tdata (abfd)->core->pid
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= bfd_get_32 (abfd, note->descdata + pid_off);
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elf_tdata (abfd)->core->lwpid
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= bfd_get_32 (abfd, note->descdata + lwpid_off);
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sect = bfd_get_section_by_name (abfd, ".reg");
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if (sect != NULL)
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sect->size = gregset_size;
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return _bfd_elfcore_make_pseudosection (abfd, ".reg", gregset_size,
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note->descpos + gregset_offset);
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}
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/* Gets program and arguments from a core.
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prog_off ~ offsetof(prpsinfo | psinfo_t, pr_fname)
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comm_off ~ offsetof(prpsinfo | psinfo_t, pr_psargs) */
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static bool
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elfcore_grok_solaris_info(bfd *abfd, Elf_Internal_Note* note,
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int prog_off, int comm_off)
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{
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elf_tdata (abfd)->core->program
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= _bfd_elfcore_strndup (abfd, note->descdata + prog_off, 16);
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elf_tdata (abfd)->core->command
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= _bfd_elfcore_strndup (abfd, note->descdata + comm_off, 80);
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return true;
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}
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/* Processes Solaris's LWP status note.
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gregset_size ~ sizeof(gregset_t)
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gregset_off ~ offsetof(lwpstatus_t, pr_reg)
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fpregset_size ~ sizeof(fpregset_t)
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fpregset_off ~ offsetof(lwpstatus_t, pr_fpreg) */
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static bool
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elfcore_grok_solaris_lwpstatus (bfd *abfd, Elf_Internal_Note* note,
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size_t gregset_size, int gregset_off,
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size_t fpregset_size, int fpregset_off)
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{
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asection *sect = NULL;
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char reg2_section_name[16] = { 0 };
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(void) snprintf (reg2_section_name, 16, "%s/%i", ".reg2",
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elf_tdata (abfd)->core->lwpid);
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/* offsetof(lwpstatus_t, pr_lwpid) */
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elf_tdata (abfd)->core->lwpid
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= bfd_get_32 (abfd, note->descdata + 4);
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/* offsetof(lwpstatus_t, pr_cursig) */
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elf_tdata (abfd)->core->signal
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= bfd_get_16 (abfd, note->descdata + 12);
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sect = bfd_get_section_by_name (abfd, ".reg");
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if (sect != NULL)
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sect->size = gregset_size;
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else if (!_bfd_elfcore_make_pseudosection (abfd, ".reg", gregset_size,
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note->descpos + gregset_off))
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return false;
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sect = bfd_get_section_by_name (abfd, reg2_section_name);
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if (sect != NULL)
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{
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sect->size = fpregset_size;
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sect->filepos = note->descpos + fpregset_off;
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sect->alignment_power = 2;
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}
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else if (!_bfd_elfcore_make_pseudosection (abfd, ".reg2", fpregset_size,
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note->descpos + fpregset_off))
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return false;
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return true;
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}
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static bool
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elfcore_grok_solaris_note_impl (bfd *abfd, Elf_Internal_Note *note)
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{
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if (note == NULL)
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return false;
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/* core files are identified as 32- or 64-bit, SPARC or x86,
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by the size of the descsz which matches the sizeof()
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the type appropriate for that note type (e.g., prstatus_t for
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SOLARIS_NT_PRSTATUS) for the corresponding architecture
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on Solaris. The core file bitness may differ from the bitness of
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gdb itself, so fixed values are used instead of sizeof().
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Appropriate fixed offsets are also used to obtain data from
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the note. */
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switch ((int) note->type)
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{
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case SOLARIS_NT_PRSTATUS:
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switch (note->descsz)
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{
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case 508: /* sizeof(prstatus_t) SPARC 32-bit */
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return elfcore_grok_solaris_prstatus(abfd, note,
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136, 216, 308, 152, 356);
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case 904: /* sizeof(prstatus_t) SPARC 64-bit */
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return elfcore_grok_solaris_prstatus(abfd, note,
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264, 360, 520, 304, 600);
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case 432: /* sizeof(prstatus_t) Intel 32-bit */
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return elfcore_grok_solaris_prstatus(abfd, note,
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136, 216, 308, 76, 356);
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case 824: /* sizeof(prstatus_t) Intel 64-bit */
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return elfcore_grok_solaris_prstatus(abfd, note,
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264, 360, 520, 224, 600);
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default:
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return true;
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}
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case SOLARIS_NT_PSINFO:
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case SOLARIS_NT_PRPSINFO:
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switch (note->descsz)
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{
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case 260: /* sizeof(prpsinfo_t) SPARC and Intel 32-bit */
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return elfcore_grok_solaris_info(abfd, note, 84, 100);
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case 328: /* sizeof(prpsinfo_t) SPARC and Intel 64-bit */
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return elfcore_grok_solaris_info(abfd, note, 120, 136);
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case 360: /* sizeof(psinfo_t) SPARC and Intel 32-bit */
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return elfcore_grok_solaris_info(abfd, note, 88, 104);
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case 440: /* sizeof(psinfo_t) SPARC and Intel 64-bit */
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return elfcore_grok_solaris_info(abfd, note, 136, 152);
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default:
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return true;
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}
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case SOLARIS_NT_LWPSTATUS:
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switch (note->descsz)
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{
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case 896: /* sizeof(lwpstatus_t) SPARC 32-bit */
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return elfcore_grok_solaris_lwpstatus(abfd, note,
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152, 344, 400, 496);
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case 1392: /* sizeof(lwpstatus_t) SPARC 64-bit */
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return elfcore_grok_solaris_lwpstatus(abfd, note,
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304, 544, 544, 848);
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case 800: /* sizeof(lwpstatus_t) Intel 32-bit */
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return elfcore_grok_solaris_lwpstatus(abfd, note,
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76, 344, 380, 420);
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case 1296: /* sizeof(lwpstatus_t) Intel 64-bit */
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return elfcore_grok_solaris_lwpstatus(abfd, note,
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224, 544, 528, 768);
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default:
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return true;
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}
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case SOLARIS_NT_LWPSINFO:
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/* sizeof(lwpsinfo_t) on 32- and 64-bit, respectively */
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if (note->descsz == 128 || note->descsz == 152)
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elf_tdata (abfd)->core->lwpid =
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bfd_get_32 (abfd, note->descdata + 4);
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break;
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default:
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break;
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}
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return true;
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}
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/* For name starting with "CORE" this may be either a Solaris
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core file or a gdb-generated core file. Do Solaris-specific
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processing on selected note types first with
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elfcore_grok_solaris_note(), then process the note
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in elfcore_grok_note(). */
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static bool
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elfcore_grok_solaris_note (bfd *abfd, Elf_Internal_Note *note)
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{
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if (!elfcore_grok_solaris_note_impl (abfd, note))
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return false;
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return elfcore_grok_note (abfd, note);
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}
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static bool
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elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note)
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{
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@ -12214,10 +12403,11 @@ elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset,
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GROKER_ELEMENT ("", elfcore_grok_note),
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GROKER_ELEMENT ("FreeBSD", elfcore_grok_freebsd_note),
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GROKER_ELEMENT ("NetBSD-CORE", elfcore_grok_netbsd_note),
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GROKER_ELEMENT ( "OpenBSD", elfcore_grok_openbsd_note),
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GROKER_ELEMENT ("OpenBSD", elfcore_grok_openbsd_note),
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GROKER_ELEMENT ("QNX", elfcore_grok_nto_note),
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GROKER_ELEMENT ("SPU/", elfcore_grok_spu_note),
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GROKER_ELEMENT ("GNU", elfobj_grok_gnu_note)
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GROKER_ELEMENT ("GNU", elfobj_grok_gnu_note),
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GROKER_ELEMENT ("CORE", elfcore_grok_solaris_note)
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};
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#undef GROKER_ELEMENT
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int i;
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@ -742,6 +742,29 @@
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#define NT_OPENBSD_WCOOKIE 23
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/* Note segments for core files on Solaris systems. Note name
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must start with "CORE". */
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#define SOLARIS_NT_PRSTATUS 1
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#define SOLARIS_NT_PRFPREG 2
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#define SOLARIS_NT_PRPSINFO 3
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#define SOLARIS_NT_PRXREG 4
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#define SOLARIS_NT_PLATFORM 5
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#define SOLARIS_NT_AUXV 6
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#define SOLARIS_NT_GWINDOWS 7
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#define SOLARIS_NT_ASRS 8
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#define SOLARIS_NT_LDT 9
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#define SOLARIS_NT_PSTATUS 10
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#define SOLARIS_NT_PSINFO 13
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#define SOLARIS_NT_PRCRED 14
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#define SOLARIS_NT_UTSNAME 15
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#define SOLARIS_NT_LWPSTATUS 16
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#define SOLARIS_NT_LWPSINFO 17
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#define SOLARIS_NT_PRPRIV 18
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#define SOLARIS_NT_PRPRIVINFO 19
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#define SOLARIS_NT_CONTENT 20
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#define SOLARIS_NT_ZONENAME 21
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#define SOLARIS_NT_PRCPUXREG 22
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/* Note segments for core files on SPU systems. Note name
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must start with "SPU/". */
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