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| author | Alan Hayward <alan.hayward@arm.com> | 2019-02-20 10:39:28 +0000 |
|---|---|---|
| committer | Alan Hayward <alan.hayward@arm.com> | 2019-02-20 10:39:28 +0000 |
| commit | e6c3b5bfb449d1a02d26f3c4bae5b732951479fc (patch) | |
| tree | 9fb625a78e11377adfcfdb56ae89ba67f74e4899 /bfd | |
| parent | 34d75fb5c419a23922174c520e124523e01114c4 (diff) | |
| download | gdb-e6c3b5bfb449d1a02d26f3c4bae5b732951479fc.zip gdb-e6c3b5bfb449d1a02d26f3c4bae5b732951479fc.tar.gz gdb-e6c3b5bfb449d1a02d26f3c4bae5b732951479fc.tar.bz2 | |
AArch64: Add pauth core file section
Used for the AArch64 pointer authentication code mask registers in Arm v8.3-a.
NT_ARM_PAC_MASK matches the value in Linux include/uapi/linux/elf.h
include/ChangeLog:
* elf/common.h (NT_ARM_PAC_MASK): Add define.
bfd/ChangeLog:
* elf-bfd.h (elfcore_write_aarch_pauth): Add declaration.
* elf.c (elfcore_grok_aarch_pauth): New function.
(elfcore_grok_note): Check for NT_ARM_PAC_MASK.
(elfcore_write_aarch_pauth): New function.
(elfcore_write_register_note): Check for AArch64 pauth section.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 8 | ||||
| -rw-r--r-- | bfd/elf-bfd.h | 2 | ||||
| -rw-r--r-- | bfd/elf.c | 27 |
3 files changed, 37 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 8183678..c10f1a4 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,11 @@ +2019-02-20 Alan Hayward <alan.hayward@arm.com> + + * elf-bfd.h (elfcore_write_aarch_pauth): Add declaration. + * elf.c (elfcore_grok_aarch_pauth): New function. + (elfcore_grok_note): Check for NT_ARM_PAC_MASK. + (elfcore_write_aarch_pauth): New function. + (elfcore_write_register_note): Check for AArch64 pauth section. + 2019-02-20 Alan Modra <amodra@gmail.com> PR 24225 diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h index 5741c60..56cddda 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -2634,6 +2634,8 @@ extern char *elfcore_write_aarch_hw_watch (bfd *, char *, int *, const void *, int); extern char *elfcore_write_aarch_sve (bfd *, char *, int *, const void *, int); +extern char *elfcore_write_aarch_pauth + (bfd *, char *, int *, const void *, int); extern char *elfcore_write_lwpstatus (bfd *, char *, int *, long, int, const void *); extern char *elfcore_write_register_note @@ -9541,6 +9541,12 @@ elfcore_grok_aarch_sve (bfd *abfd, Elf_Internal_Note *note) return elfcore_make_note_pseudosection (abfd, ".reg-aarch-sve", note); } +static bfd_boolean +elfcore_grok_aarch_pauth (bfd *abfd, Elf_Internal_Note *note) +{ + return elfcore_make_note_pseudosection (abfd, ".reg-aarch-pauth", note); +} + #if defined (HAVE_PRPSINFO_T) typedef prpsinfo_t elfcore_psinfo_t; #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */ @@ -10135,6 +10141,13 @@ elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note) else return TRUE; + case NT_ARM_PAC_MASK: + if (note->namesz == 6 + && strcmp (note->namedata, "LINUX") == 0) + return elfcore_grok_aarch_pauth (abfd, note); + else + return TRUE; + case NT_PRPSINFO: case NT_PSINFO: if (bed->elf_backend_grok_psinfo) @@ -11495,6 +11508,18 @@ elfcore_write_aarch_sve (bfd *abfd, } char * +elfcore_write_aarch_pauth (bfd *abfd, + char *buf, + int *bufsiz, + const void *aarch_pauth, + int size) +{ + char *note_name = "LINUX"; + return elfcore_write_note (abfd, buf, bufsiz, + note_name, NT_ARM_PAC_MASK, aarch_pauth, size); +} + +char * elfcore_write_register_note (bfd *abfd, char *buf, int *bufsiz, @@ -11574,6 +11599,8 @@ elfcore_write_register_note (bfd *abfd, 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); + if (strcmp (section, ".reg-aarch-pauth") == 0) + return elfcore_write_aarch_pauth (abfd, buf, bufsiz, data, size); return NULL; } |