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* elf-bfd.h (struct sdt_note): New struct.

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(struct elf_obj_tdata) <sdt_note_head>: New field.
	* elf.c (elfobj_grok_stapsdt_note_1): New function.
	(elfobj_grok_stapsdt_note): Likewise.
	(elf_parse_notes): Added code to treat SystemTap note
	sections.
	* common.h (NT_STAPSDT): New define.
This commit is contained in:
Nick Clifton 2011-04-15 11:14:01 +00:00
parent 9c68f58e48
commit e21e5835b6
5 changed files with 65 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
bfd/ChangeLog
View file

@ -1,3 +1,12 @@
2011-04-15 Sergio Durigan Junior <sergiodj@redhat.com>
* elf-bfd.h (struct sdt_note): New struct.
(struct elf_obj_tdata) <sdt_note_head>: New field.
* elf.c (elfobj_grok_stapsdt_note_1): New function.
(elfobj_grok_stapsdt_note): Likewise.
(elf_parse_notes): Added code to treat SystemTap note
sections.
2011-04-12 Richard Henderson <rth@redhat.com>
* elf64-alpha.c (elf64_alpha_size_dynamic_sections): Do not

14
bfd/elf-bfd.h
View file

@ -1476,6 +1476,15 @@ enum
Tag_compatibility = 32
};
/* The following struct stores information about every SystemTap section
found in the object file. */
struct sdt_note
{
struct sdt_note *next;
bfd_size_type size;
bfd_byte data[1];
};
/* Some private data is stashed away for future use using the tdata pointer
in the bfd structure. */
@ -1633,6 +1642,11 @@ struct elf_obj_tdata
bfd_size_type build_id_size;
bfd_byte *build_id;
/* Linked-list containing information about every Systemtap section
found in the object file. Each section corresponds to one entry
in the list. */
struct sdt_note *sdt_note_head;
/* True if the bfd contains symbols that have the STT_GNU_IFUNC
symbol type or STB_GNU_UNIQUE binding. Used to set the osabi
field in the ELF header structure. */

35
bfd/elf.c
View file

@ -8416,6 +8416,35 @@ elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note)
}
}
static bfd_boolean
elfobj_grok_stapsdt_note_1 (bfd *abfd, Elf_Internal_Note *note)
{
struct sdt_note *cur =
(struct sdt_note *) bfd_alloc (abfd, sizeof (struct sdt_note)
+ note->descsz);
cur->next = (struct sdt_note *) (elf_tdata (abfd))->sdt_note_head;
cur->size = (bfd_size_type) note->descsz;
memcpy (cur->data, note->descdata, note->descsz);
elf_tdata (abfd)->sdt_note_head = cur;
return TRUE;
}
static bfd_boolean
elfobj_grok_stapsdt_note (bfd *abfd, Elf_Internal_Note *note)
{
switch (note->type)
{
case NT_STAPSDT:
return elfobj_grok_stapsdt_note_1 (abfd, note);
default:
return TRUE;
}
}
static bfd_boolean
elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp)
{
@ -9189,6 +9218,12 @@ elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset)
if (! elfobj_grok_gnu_note (abfd, &in))
return FALSE;
}
else if (in.namesz == sizeof "stapsdt"
&& strcmp (in.namedata, "stapsdt") == 0)
{
if (! elfobj_grok_stapsdt_note (abfd, &in))
return FALSE;
}
break;
}

4
include/elf/ChangeLog
View file

@ -1,3 +1,7 @@
2011-04-15 Sergio Durigan Junior <sergiodj@redhat.com>
* common.h (NT_STAPSDT): New define.
2011-03-31 Bernd Schmidt <bernds@codesourcery.com>
* tic6x.h (R_C6000_JUMP_SPLOT, R_C6000_EHTYPE,

4
include/elf/common.h
View file

@ -1,6 +1,6 @@
/* ELF support for BFD.
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
Written by Fred Fish @ Cygnus Support, from information published
@ -548,6 +548,8 @@
#define NT_LWPSINFO 17 /* Has a struct lwpsinfo_t */
#define NT_WIN32PSTATUS 18 /* Has a struct win32_pstatus */
/* Note segment for SystemTap probes. */
#define NT_STAPSDT 3
/* Note segments for core files on NetBSD systems. Note name
must start with "NetBSD-CORE". */