/* ELF executable support for BFD.
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+ 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
}
else
{
- if (p->p_type == PT_LOAD
- || (this_hdr->sh_type == SHT_NOBITS
- && (this_hdr->sh_flags & SHF_TLS) != 0
- && this_hdr->sh_offset == 0))
+ if (p->p_type == PT_LOAD)
{
- if (this_hdr->sh_type == SHT_NOBITS)
- {
- /* These sections don't really need sh_offset,
- but give them one anyway. */
- bfd_vma adjust = vma_page_aligned_bias (this_hdr->sh_addr,
- off, align);
- this_hdr->sh_offset = sec->filepos = off + adjust;
- }
- else
- {
- this_hdr->sh_offset = sec->filepos = off;
- off += this_hdr->sh_size;
- }
+ this_hdr->sh_offset = sec->filepos = off;
+ if (this_hdr->sh_type != SHT_NOBITS)
+ off += this_hdr->sh_size;
+ }
+ else if (this_hdr->sh_type == SHT_NOBITS
+ && (this_hdr->sh_flags & SHF_TLS) != 0
+ && this_hdr->sh_offset == 0)
+ {
+ /* This is a .tbss section that didn't get a PT_LOAD.
+ (See _bfd_elf_map_sections_to_segments "Create a
+ final PT_LOAD".) Set sh_offset to the value it
+ would have if we had created a zero p_filesz and
+ p_memsz PT_LOAD header for the section. This
+ also makes the PT_TLS header have the same
+ p_offset value. */
+ bfd_vma adjust = vma_page_aligned_bias (this_hdr->sh_addr,
+ off, align);
+ this_hdr->sh_offset = sec->filepos = off + adjust;
}
if (this_hdr->sh_type != SHT_NOBITS)
enum { nothing_seen, symbol_seen, file_after_symbol_seen } state;
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ if (symbols == NULL)
+ return FALSE;
+
filename = NULL;
func = NULL;
file = NULL;
for (p = symbols; *p != NULL; p++)
{
- elf_symbol_type *q;
- unsigned int type;
-
- q = (elf_symbol_type *) *p;
+ asymbol *sym = *p;
+ asection *code_sec;
+ bfd_vma code_off;
- type = ELF_ST_TYPE (q->internal_elf_sym.st_info);
- switch (type)
+ if ((sym->flags & BSF_FILE) != 0)
{
- case STT_FILE:
- file = &q->symbol;
+ file = sym;
if (state == symbol_seen)
state = file_after_symbol_seen;
continue;
- default:
- if (!bed->is_function_type (type))
- break;
- case STT_NOTYPE:
- if (bfd_get_section (&q->symbol) == section
- && q->symbol.value >= low_func
- && q->symbol.value <= offset)
- {
- func = (asymbol *) q;
- low_func = q->symbol.value;
- filename = NULL;
- if (file != NULL
- && (ELF_ST_BIND (q->internal_elf_sym.st_info) == STB_LOCAL
- || state != file_after_symbol_seen))
- filename = bfd_asymbol_name (file);
- }
- break;
+ }
+
+ if (bed->maybe_function_sym (sym, &code_sec, &code_off)
+ && code_sec == section
+ && code_off >= low_func
+ && code_off <= offset)
+ {
+ func = sym;
+ low_func = code_off;
+ filename = NULL;
+ if (file != NULL
+ && ((sym->flags & BSF_LOCAL) != 0
+ || state != file_after_symbol_seen))
+ filename = bfd_asymbol_name (file);
}
if (state == nothing_seen)
state = symbol_seen;
return TRUE;
}
- if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
+ if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections,
+ section, symbols, offset,
filename_ptr, functionname_ptr,
line_ptr, 0,
&elf_tdata (abfd)->dwarf2_find_line_info))
bfd_boolean
_bfd_elf_close_and_cleanup (bfd *abfd)
{
- if (bfd_get_format (abfd) == bfd_object)
+ struct elf_obj_tdata *tdata = elf_tdata (abfd);
+ if (bfd_get_format (abfd) == bfd_object && tdata != NULL)
{
- if (elf_tdata (abfd) != NULL && elf_shstrtab (abfd) != NULL)
+ if (elf_shstrtab (abfd) != NULL)
_bfd_elf_strtab_free (elf_shstrtab (abfd));
- _bfd_dwarf2_cleanup_debug_info (abfd);
+ _bfd_dwarf2_cleanup_debug_info (abfd, &tdata->dwarf2_find_line_info);
}
return _bfd_generic_close_and_cleanup (abfd);
return elfcore_make_note_pseudosection (abfd, ".reg-s390-prefix", note);
}
+static bfd_boolean
+elfcore_grok_s390_last_break (bfd *abfd, Elf_Internal_Note *note)
+{
+ return elfcore_make_note_pseudosection (abfd, ".reg-s390-last-break", note);
+}
+
+static bfd_boolean
+elfcore_grok_s390_system_call (bfd *abfd, Elf_Internal_Note *note)
+{
+ return elfcore_make_note_pseudosection (abfd, ".reg-s390-system-call", note);
+}
+
static bfd_boolean
elfcore_grok_arm_vfp (bfd *abfd, Elf_Internal_Note *note)
{
else
return TRUE;
+ case NT_S390_LAST_BREAK:
+ if (note->namesz == 6
+ && strcmp (note->namedata, "LINUX") == 0)
+ return elfcore_grok_s390_last_break (abfd, note);
+ else
+ return TRUE;
+
+ case NT_S390_SYSTEM_CALL:
+ if (note->namesz == 6
+ && strcmp (note->namedata, "LINUX") == 0)
+ return elfcore_grok_s390_system_call (abfd, note);
+ else
+ return TRUE;
+
case NT_ARM_VFP:
if (note->namesz == 6
&& strcmp (note->namedata, "LINUX") == 0)
return buf;
}
-#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
char *
elfcore_write_prpsinfo (bfd *abfd,
char *buf,
const char *fname,
const char *psargs)
{
- const char *note_name = "CORE";
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
if (bed->elf_backend_write_core_note != NULL)
return ret;
}
+#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
#if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
if (bed->s->elfclass == ELFCLASS32)
{
strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
return elfcore_write_note (abfd, buf, bufsiz,
- note_name, note_type, &data, sizeof (data));
+ "CORE", note_type, &data, sizeof (data));
}
else
#endif
strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
return elfcore_write_note (abfd, buf, bufsiz,
- note_name, note_type, &data, sizeof (data));
+ "CORE", note_type, &data, sizeof (data));
}
-}
#endif /* PSINFO_T or PRPSINFO_T */
-#if defined (HAVE_PRSTATUS_T)
+ free (buf);
+ return NULL;
+}
+
char *
elfcore_write_prstatus (bfd *abfd,
char *buf,
int cursig,
const void *gregs)
{
- const char *note_name = "CORE";
const struct elf_backend_data *bed = get_elf_backend_data (abfd);
if (bed->elf_backend_write_core_note != NULL)
return ret;
}
+#if defined (HAVE_PRSTATUS_T)
#if defined (HAVE_PRSTATUS32_T)
if (bed->s->elfclass == ELFCLASS32)
{
prstat.pr_pid = pid;
prstat.pr_cursig = cursig;
memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
- return elfcore_write_note (abfd, buf, bufsiz, note_name,
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE",
NT_PRSTATUS, &prstat, sizeof (prstat));
}
else
prstat.pr_pid = pid;
prstat.pr_cursig = cursig;
memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
- return elfcore_write_note (abfd, buf, bufsiz, note_name,
+ return elfcore_write_note (abfd, buf, bufsiz, "CORE",
NT_PRSTATUS, &prstat, sizeof (prstat));
}
-}
#endif /* HAVE_PRSTATUS_T */
+ free (buf);
+ return NULL;
+}
+
#if defined (HAVE_LWPSTATUS_T)
char *
elfcore_write_lwpstatus (bfd *abfd,
note_name, NT_S390_PREFIX, s390_prefix, size);
}
+char *
+elfcore_write_s390_last_break (bfd *abfd,
+ char *buf,
+ int *bufsiz,
+ const void *s390_last_break,
+ int size)
+{
+ char *note_name = "LINUX";
+ return elfcore_write_note (abfd, buf, bufsiz,
+ note_name, NT_S390_LAST_BREAK,
+ s390_last_break, size);
+}
+
+char *
+elfcore_write_s390_system_call (bfd *abfd,
+ char *buf,
+ int *bufsiz,
+ const void *s390_system_call,
+ int size)
+{
+ char *note_name = "LINUX";
+ return elfcore_write_note (abfd, buf, bufsiz,
+ note_name, NT_S390_SYSTEM_CALL,
+ s390_system_call, size);
+}
+
char *
elfcore_write_arm_vfp (bfd *abfd,
char *buf,
return elfcore_write_s390_ctrs (abfd, buf, bufsiz, data, size);
if (strcmp (section, ".reg-s390-prefix") == 0)
return elfcore_write_s390_prefix (abfd, buf, bufsiz, data, size);
+ if (strcmp (section, ".reg-s390-last-break") == 0)
+ return elfcore_write_s390_last_break (abfd, buf, bufsiz, data, size);
+ if (strcmp (section, ".reg-s390-system-call") == 0)
+ return elfcore_write_s390_system_call (abfd, buf, bufsiz, data, size);
if (strcmp (section, ".reg-arm-vfp") == 0)
return elfcore_write_arm_vfp (abfd, buf, bufsiz, data, size);
return NULL;
i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
/* To make things simpler for the loader on Linux systems we set the
- osabi field to ELFOSABI_LINUX if the binary contains symbols of
+ osabi field to ELFOSABI_GNU if the binary contains symbols of
the STT_GNU_IFUNC type or STB_GNU_UNIQUE binding. */
if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE
&& elf_tdata (abfd)->has_gnu_symbols)
- i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
+ i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_GNU;
}
return (type == STT_FUNC
|| type == STT_GNU_IFUNC);
}
+
+/* Return TRUE iff the ELF symbol SYM might be a function. Set *CODE_SEC
+ and *CODE_OFF to the function's entry point. */
+
+bfd_boolean
+_bfd_elf_maybe_function_sym (const asymbol *sym,
+ asection **code_sec, bfd_vma *code_off)
+{
+ if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
+ | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
+ return FALSE;
+
+ *code_sec = sym->section;
+ *code_off = sym->value;
+ return TRUE;
+}