From 9031cb4af0adcf1c73cb9b8c73ca2d989023af2f Mon Sep 17 00:00:00 2001 From: Djordje Todorovic Date: Wed, 8 Nov 2017 21:19:05 +0000 Subject: [PATCH] BFD: Write Linux core PRSTATUS note into MIPS core file On MIPS o32, n32 and n64 platforms information such as PID was not correctly written into core file from GDB. This fixes that behavior. bfd/ChangeLog: * 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. (elf_backend_write_core_note): New macro. * elfn32-mips.c (elf32_mips_write_core_note): New function. (elf_backend_write_core_note): New macro. --- bfd/ChangeLog | 9 +++++++++ bfd/elf32-mips.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ bfd/elf64-mips.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ bfd/elfn32-mips.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 141 insertions(+) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 9e820c5b854..b977944865f 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,12 @@ +2017-11-08 Djordje Todorovic + + * 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. + (elf_backend_write_core_note): New macro. + * elfn32-mips.c (elf32_mips_write_core_note): New function. + (elf_backend_write_core_note): New macro. + 2017-11-07 Alan Modra * elf64-ppc.c (ppc64_elf_build_stubs): Correct pluralization in diff --git a/bfd/elf32-mips.c b/bfd/elf32-mips.c index 17ca43284d8..3b481031023 100644 --- a/bfd/elf32-mips.c +++ b/bfd/elf32-mips.c @@ -2373,6 +2373,45 @@ elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) return TRUE; } + +/* Write Linux core PRSTATUS note into core file. */ + +static char * +elf32_mips_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, + ...) +{ + switch (note_type) + { + default: + return NULL; + + case NT_PRPSINFO: + BFD_FAIL (); + return NULL; + + case NT_PRSTATUS: + { + char data[256]; + va_list ap; + long pid; + int cursig; + const void *greg; + + va_start (ap, note_type); + memset (data, 0, 72); + pid = va_arg (ap, long); + bfd_put_32 (abfd, pid, data + 24); + cursig = va_arg (ap, int); + bfd_put_16 (abfd, cursig, data + 12); + greg = va_arg (ap, const void *); + memcpy (data + 72, greg, 180); + memset (data + 252, 0, 4); + va_end (ap); + return elfcore_write_note (abfd, buf, bufsiz, + "CORE", note_type, data, sizeof (data)); + } + } +} /* Depending on the target vector we generate some version of Irix executables or "normal" MIPS ELF ABI executables. */ @@ -2554,6 +2593,9 @@ static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { #define ELF_COMMONPAGESIZE 0x1000 #define elf32_bed elf32_tradbed +#undef elf_backend_write_core_note +#define elf_backend_write_core_note elf32_mips_write_core_note + /* Include the target file again for this target. */ #include "elf32-target.h" @@ -2575,6 +2617,8 @@ static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { #undef elf32_bed #define elf32_bed elf32_fbsd_tradbed +#undef elf_backend_write_core_note + #include "elf32-target.h" /* Implement elf_backend_final_write_processing for VxWorks. */ diff --git a/bfd/elf64-mips.c b/bfd/elf64-mips.c index d51124b3098..af0c01c5410 100644 --- a/bfd/elf64-mips.c +++ b/bfd/elf64-mips.c @@ -4248,6 +4248,45 @@ elf64_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) return TRUE; } + +/* Write Linux core PRSTATUS note into core file. */ + +static char * +elf64_mips_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, + ...) +{ + switch (note_type) + { + default: + return NULL; + + case NT_PRPSINFO: + BFD_FAIL (); + return NULL; + + case NT_PRSTATUS: + { + char data[480]; + va_list ap; + long pid; + int cursig; + const void *greg; + + va_start (ap, note_type); + memset (data, 0, 112); + pid = va_arg (ap, long); + bfd_put_32 (abfd, pid, data + 32); + cursig = va_arg (ap, int); + bfd_put_16 (abfd, cursig, data + 12); + greg = va_arg (ap, const void *); + memcpy (data + 112, greg, 360); + memset (data + 472, 0, 8); + va_end (ap); + return elfcore_write_note (abfd, buf, bufsiz, + "CORE", note_type, data, sizeof (data)); + } + } +} /* ECOFF swapping routines. These are used when dealing with the .mdebug section, which is in the ECOFF debugging format. */ @@ -4454,6 +4493,9 @@ const struct elf_size_info mips_elf64_size_info = #define ELF_COMMONPAGESIZE 0x1000 #define elf64_bed elf64_tradbed +#undef elf_backend_write_core_note +#define elf_backend_write_core_note elf64_mips_write_core_note + /* Include the target file again for this target. */ #include "elf64-target.h" @@ -4476,4 +4518,6 @@ const struct elf_size_info mips_elf64_size_info = #undef elf64_bed #define elf64_bed elf64_fbsd_tradbed +#undef elf64_mips_write_core_note + #include "elf64-target.h" diff --git a/bfd/elfn32-mips.c b/bfd/elfn32-mips.c index 9ac2da3689d..8e5efa55255 100644 --- a/bfd/elfn32-mips.c +++ b/bfd/elfn32-mips.c @@ -3632,6 +3632,45 @@ elf_n32_mips_grok_freebsd_prstatus (bfd *abfd, Elf_Internal_Note *note) return _bfd_elfcore_make_pseudosection (abfd, ".reg", size, note->descpos + offset); } + +/* Write Linux core PRSTATUS note into core file. */ + +static char * +elf32_mips_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, + ...) +{ + switch (note_type) + { + default: + return NULL; + + case NT_PRPSINFO: + BFD_FAIL (); + return NULL; + + case NT_PRSTATUS: + { + char data[440]; + va_list ap; + long pid; + int cursig; + const void *greg; + + va_start (ap, note_type); + memset (data, 0, 72); + pid = va_arg (ap, long); + bfd_put_32 (abfd, pid, data + 24); + cursig = va_arg (ap, int); + bfd_put_16 (abfd, cursig, data + 12); + greg = va_arg (ap, const void *); + memcpy (data + 72, greg, 360); + memset (data + 432, 0, 8); + va_end (ap); + return elfcore_write_note (abfd, buf, bufsiz, + "CORE", note_type, data, sizeof (data)); + } + } +} /* Depending on the target vector we generate some version of Irix executables or "normal" MIPS ELF ABI executables. */ @@ -3824,6 +3863,9 @@ static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { #define ELF_COMMONPAGESIZE 0x1000 #define elf32_bed elf32_tradbed +#undef elf_backend_write_core_note +#define elf_backend_write_core_note elf32_mips_write_core_note + /* Include the target file again for this target. */ #include "elf32-target.h" @@ -3846,4 +3888,6 @@ static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { #undef elf32_bed #define elf32_bed elf32_fbsd_tradbed +#undef elf_backend_write_core_note + #include "elf32-target.h" -- 2.30.2