From b5c2367c3ac5f696221d9c24f470498abdb83257 Mon Sep 17 00:00:00 2001 From: John Baldwin Date: Fri, 1 Apr 2022 13:16:46 -0700 Subject: [PATCH] Use pseudosections for NT_FREEBSD_X86_SEGBASES core dump notes. This includes adding pseudosections when reading a core dump as well as support for writing out a core dump note from a pseudosection. bfd/ChangeLog: * elf-bfd.h (elfcore_write_x86_segbases): New. * elf.c (elfcore_grok_freebsd_note): Add pseudosections for NT_FREEBSD_X86_SEGBASES register notes. (elfcore_write_x86_segbases): New. (elfcore_write_register_note): Write NT_FREEBSD_X86_SEGBASES register notes. --- bfd/ChangeLog | 9 +++++++++ bfd/elf-bfd.h | 2 ++ bfd/elf.c | 14 ++++++++++++++ 3 files changed, 25 insertions(+) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 1fcb8d97a74..98f0bab4211 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,12 @@ +2022-04-01 John Baldwin + + * elf-bfd.h (elfcore_write_x86_segbases): New. + * elf.c (elfcore_grok_freebsd_note): Add pseudosections for + NT_FREEBSD_X86_SEGBASES register notes. + (elfcore_write_x86_segbases): New. + (elfcore_write_register_note): Write NT_FREEBSD_X86_SEGBASES + register notes. + 2022-04-01 John Baldwin * elf.c (elfcore_grok_freebsd_note): Remove checks for namesz. diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h index 5c3985f6e57..c7c0a793b15 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -2786,6 +2786,8 @@ extern char *elfcore_write_prxfpreg (bfd *, char *, int *, const void *, int); extern char *elfcore_write_xstatereg (bfd *, char *, int *, const void *, int); +extern char *elfcore_write_x86_segbases + (bfd *, char *, int *, const void *, int); extern char *elfcore_write_ppc_vmx (bfd *, char *, int *, const void *, int); extern char *elfcore_write_ppc_vsx diff --git a/bfd/elf.c b/bfd/elf.c index a99149e50b3..37c53cfdf32 100644 --- a/bfd/elf.c +++ b/bfd/elf.c @@ -11027,6 +11027,9 @@ elfcore_grok_freebsd_note (bfd *abfd, Elf_Internal_Note *note) case NT_FREEBSD_PROCSTAT_AUXV: return elfcore_make_auxv_note_section (abfd, note, 4); + case NT_FREEBSD_X86_SEGBASES: + return elfcore_make_note_pseudosection (abfd, ".reg-x86-segbases", note); + case NT_X86_XSTATE: return elfcore_grok_xstatereg (abfd, note); @@ -11904,6 +11907,15 @@ elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz, note_name, NT_X86_XSTATE, xfpregs, size); } +char * +elfcore_write_x86_segbases (bfd *abfd, char *buf, int *bufsiz, + const void *regs, int size) +{ + char *note_name = "FreeBSD"; + return elfcore_write_note (abfd, buf, bufsiz, + note_name, NT_FREEBSD_X86_SEGBASES, regs, size); +} + char * elfcore_write_ppc_vmx (bfd *abfd, char *buf, @@ -12441,6 +12453,8 @@ elfcore_write_register_note (bfd *abfd, return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size); if (strcmp (section, ".reg-xstate") == 0) return elfcore_write_xstatereg (abfd, buf, bufsiz, data, size); + if (strcmp (section, ".reg-x86-segbases") == 0) + return elfcore_write_x86_segbases (abfd, buf, bufsiz, data, size); if (strcmp (section, ".reg-ppc-vmx") == 0) return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size); if (strcmp (section, ".reg-ppc-vsx") == 0) -- 2.30.2