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Add checks for the NT_ARM_SVE section in a core file.

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The NT_ARM_SVE section is documented here:
  https://github.com/torvalds/linux/blob/master/Documentation/arm64/sve.txt
  * A NT_ARM_SVE note will be added to each coredump for each thread of the
   dumped process.  The contents will be equivalent to the data that would have
   been read if a PTRACE_GETREGSET of NT_ARM_SVE were executed for each thread
   when the coredump was generated.

	* elf.c (elfcore_grok_aarch_sve): New function.
	(elfcore_grok_note): Check for Aarch64 SVE.
	(elfcore_write_aarch_sve): New function.
	(elfcore_write_register_note): Check for Aarch64 SVE.
	* elf-bfd.h(elfcore_grok_aarch_sve): New declaration.
This commit is contained in:
Alan Hayward
2018-07-06 16:25:21 +01:00
committed by Nick Clifton
parent f311ba7ed8
commit ad1cc4e492
3 changed files with 37 additions and 0 deletions
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8
bfd/ChangeLog
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@ -1,3 +1,11 @@
2018-07-06 Alan Hayward <alan.hayward@arm.com>
* elf.c (elfcore_grok_aarch_sve): New function.
(elfcore_grok_note): Check for Aarch64 SVE.
(elfcore_write_aarch_sve): New function.
(elfcore_write_register_note): Check for Aarch64 SVE.
* elf-bfd.h(elfcore_grok_aarch_sve): New declaration.
2018-07-06 Alan Modra <amodra@gmail.com> 2018-07-06 Alan Modra <amodra@gmail.com>
* elf32-arm.c (elf32_arm_nabi_write_core_note): Don't use * elf32-arm.c (elf32_arm_nabi_write_core_note): Don't use

2
bfd/elf-bfd.h
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@ -2602,6 +2602,8 @@ extern char *elfcore_write_aarch_hw_break
(bfd *, char *, int *, const void *, int); (bfd *, char *, int *, const void *, int);
extern char *elfcore_write_aarch_hw_watch extern char *elfcore_write_aarch_hw_watch
(bfd *, char *, int *, const void *, int); (bfd *, char *, int *, const void *, int);
extern char *elfcore_write_aarch_sve
(bfd *, char *, int *, const void *, int);
extern char *elfcore_write_lwpstatus extern char *elfcore_write_lwpstatus
(bfd *, char *, int *, long, int, const void *); (bfd *, char *, int *, long, int, const void *);
extern char *elfcore_write_register_note extern char *elfcore_write_register_note

27
bfd/elf.c
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@ -9340,6 +9340,12 @@ elfcore_grok_aarch_hw_watch (bfd *abfd, Elf_Internal_Note *note)
return elfcore_make_note_pseudosection (abfd, ".reg-aarch-hw-watch", note); return elfcore_make_note_pseudosection (abfd, ".reg-aarch-hw-watch", note);
} }
static bfd_boolean
elfcore_grok_aarch_sve (bfd *abfd, Elf_Internal_Note *note)
{
return elfcore_make_note_pseudosection (abfd, ".reg-aarch-sve", note);
}
#if defined (HAVE_PRPSINFO_T) #if defined (HAVE_PRPSINFO_T)
typedef prpsinfo_t elfcore_psinfo_t; typedef prpsinfo_t elfcore_psinfo_t;
#if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
@ -9836,6 +9842,13 @@ elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
else else
return TRUE; return TRUE;
case NT_ARM_SVE:
if (note->namesz == 6
&& strcmp (note->namedata, "LINUX") == 0)
return elfcore_grok_aarch_sve (abfd, note);
else
return TRUE;
case NT_PRPSINFO: case NT_PRPSINFO:
case NT_PSINFO: case NT_PSINFO:
if (bed->elf_backend_grok_psinfo) if (bed->elf_backend_grok_psinfo)
@ -11027,6 +11040,18 @@ elfcore_write_aarch_hw_watch (bfd *abfd,
note_name, NT_ARM_HW_WATCH, aarch_hw_watch, size); note_name, NT_ARM_HW_WATCH, aarch_hw_watch, size);
} }
char *
elfcore_write_aarch_sve (bfd *abfd,
char *buf,
int *bufsiz,
const void *aarch_sve,
int size)
{
char *note_name = "LINUX";
return elfcore_write_note (abfd, buf, bufsiz,
note_name, NT_ARM_SVE, aarch_sve, size);
}
char * char *
elfcore_write_register_note (bfd *abfd, elfcore_write_register_note (bfd *abfd,
char *buf, char *buf,
@ -11079,6 +11104,8 @@ elfcore_write_register_note (bfd *abfd,
return elfcore_write_aarch_hw_break (abfd, buf, bufsiz, data, size); return elfcore_write_aarch_hw_break (abfd, buf, bufsiz, data, size);
if (strcmp (section, ".reg-aarch-hw-watch") == 0) if (strcmp (section, ".reg-aarch-hw-watch") == 0)
return elfcore_write_aarch_hw_watch (abfd, buf, bufsiz, data, size); return elfcore_write_aarch_hw_watch (abfd, buf, bufsiz, data, size);
if (strcmp (section, ".reg-aarch-sve") == 0)
return elfcore_write_aarch_sve (abfd, buf, bufsiz, data, size);
return NULL; return NULL;
} }