/* Mach-O support for BFD.
- Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
- 2009, 2010, 2011, 2012
- Free Software Foundation, Inc.
+ Copyright (C) 1999-2017 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#define bfd_mach_o_mkobject bfd_mach_o_gen_mkobject
#define FILE_ALIGN(off, algn) \
- (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1 << (algn)))
+ (((off) + ((file_ptr) 1 << (algn)) - 1) & ((file_ptr) -1U << (algn)))
+
+static bfd_boolean
+bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd);
unsigned int
bfd_mach_o_version (bfd *abfd)
{
return mach_o_wide_p (&bfd_mach_o_get_data (abfd)->header);
}
-
+
/* Tables to translate well known Mach-O segment/section names to bfd
names. Use of canonical names (such as .text or .debug_frame) is required
by gdb. */
/* __TEXT Segment. */
static const mach_o_section_name_xlat text_section_names_xlat[] =
{
- { ".text", "__text",
+ { ".text", "__text",
SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
BFD_MACH_O_S_ATTR_PURE_INSTRUCTIONS, 0},
{ ".const", "__const",
SEC_CODE | SEC_LOAD, BFD_MACH_O_S_REGULAR,
BFD_MACH_O_S_ATTR_NONE, 0},
{ ".eh_frame", "__eh_frame",
- SEC_READONLY | SEC_LOAD, BFD_MACH_O_S_COALESCED,
+ SEC_READONLY | SEC_DATA | SEC_LOAD, BFD_MACH_O_S_COALESCED,
BFD_MACH_O_S_ATTR_LIVE_SUPPORT
| BFD_MACH_O_S_ATTR_STRIP_STATIC_SYMS
- | BFD_MACH_O_S_ATTR_NO_TOC, 3},
+ | BFD_MACH_O_S_ATTR_NO_TOC, 2},
{ NULL, NULL, 0, 0, 0, 0}
};
{ ".debug_macro", "__debug_macro",
SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
BFD_MACH_O_S_ATTR_DEBUG, 0},
+ { ".debug_gdb_scripts", "__debug_gdb_scri",
+ SEC_DEBUGGING, BFD_MACH_O_S_REGULAR,
+ BFD_MACH_O_S_ATTR_DEBUG, 0},
{ NULL, NULL, 0, 0, 0, 0}
};
/* Fetch the translation from a Mach-O section designation (segment, section)
as a bfd short name, if one exists. Otherwise return NULL.
-
+
Allow the segment and section names to be unterminated 16 byte arrays. */
const mach_o_section_name_xlat *
BFD_MACH_O_SECTNAME_SIZE) == 0)
return sec;
- return NULL;
+ return NULL;
}
/* If the bfd_name for this section is a 'canonical' form for which we
- know the Mach-O data, return the segment name and the data for the
+ know the Mach-O data, return the segment name and the data for the
Mach-O equivalent. Otherwise return NULL. */
const mach_o_section_name_xlat *
return sec;
}
- return NULL;
+ return NULL;
}
/* Convert Mach-O section name to BFD.
- Try to use standard/canonical names, for which we have tables including
+ Try to use standard/canonical names, for which we have tables including
default flag settings - which are returned. Otherwise forge a new name
in the form "<segmentname>.<sectionname>" this will be prefixed with
LC_SEGMENT. if the segment name does not begin with an underscore.
*name = NULL;
*flags = SEC_NO_FLAGS;
- /* First search for a canonical name...
+ /* First search for a canonical name...
xlat will be non-null if there is an entry for segname, secname. */
xlat = bfd_mach_o_section_data_for_mach_sect (abfd, segname, secname);
if (xlat)
{
len = strlen (xlat->bfd_name);
- res = bfd_alloc (abfd, len+1);
+ res = bfd_alloc (abfd, len + 1);
if (res == NULL)
return;
memcpy (res, xlat->bfd_name, len+1);
return the translation table - which contains defaults for flags,
type, attribute and default alignment data.
- Otherwise, expand the bfd_name (assumed to be in the form
+ Otherwise, expand the bfd_name (assumed to be in the form
"[LC_SEGMENT.]<segmentname>.<sectionname>") and return NULL. */
static const mach_o_section_name_xlat *
seglen = dot - name;
seclen = len - (dot + 1 - name);
- if (seglen < 16 && seclen < 16)
+ if (seglen <= BFD_MACH_O_SEGNAME_SIZE
+ && seclen <= BFD_MACH_O_SECTNAME_SIZE)
{
memcpy (section->segname, name, seglen);
section->segname[seglen] = 0;
return sec->size / elsz;
}
+/* Append command CMD to ABFD. Note that header.ncmds is not updated. */
+
+static void
+bfd_mach_o_append_command (bfd *abfd, bfd_mach_o_load_command *cmd)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+
+ if (mdata->last_command != NULL)
+ mdata->last_command->next = cmd;
+ else
+ mdata->first_command = cmd;
+ mdata->last_command = cmd;
+ cmd->next = NULL;
+}
/* Copy any private info we understand from the input symbol
to the output symbol. */
asymbol *osymbol)
{
bfd_mach_o_asymbol *os, *is;
+
os = (bfd_mach_o_asymbol *)osymbol;
is = (bfd_mach_o_asymbol *)isymbol;
os->n_type = is->n_type;
os->n_sect = is->n_sect;
os->n_desc = is->n_desc;
os->symbol.udata.i = is->symbol.udata.i;
+
return TRUE;
}
to the output section. */
bfd_boolean
-bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd ATTRIBUTE_UNUSED,
- asection *isection,
- bfd *obfd ATTRIBUTE_UNUSED,
- asection *osection)
-{
- if (osection->used_by_bfd == NULL)
- osection->used_by_bfd = isection->used_by_bfd;
- else
- if (isection->used_by_bfd != NULL)
- memcpy (osection->used_by_bfd, isection->used_by_bfd,
- sizeof (bfd_mach_o_section));
-
- if (osection->used_by_bfd != NULL)
- ((bfd_mach_o_section *)osection->used_by_bfd)->bfdsection = osection;
+bfd_mach_o_bfd_copy_private_section_data (bfd *ibfd, asection *isection,
+ bfd *obfd, asection *osection)
+{
+ bfd_mach_o_section *os = bfd_mach_o_get_mach_o_section (osection);
+ bfd_mach_o_section *is = bfd_mach_o_get_mach_o_section (isection);
+
+ if (ibfd->xvec->flavour != bfd_target_mach_o_flavour
+ || obfd->xvec->flavour != bfd_target_mach_o_flavour)
+ return TRUE;
+
+ BFD_ASSERT (is != NULL && os != NULL);
+
+ os->flags = is->flags;
+ os->reserved1 = is->reserved1;
+ os->reserved2 = is->reserved2;
+ os->reserved3 = is->reserved3;
return TRUE;
}
to the output bfd. */
bfd_boolean
-bfd_mach_o_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
+bfd_mach_o_bfd_copy_private_header_data (bfd *ibfd, bfd *obfd)
{
+ bfd_mach_o_data_struct *imdata;
+ bfd_mach_o_data_struct *omdata;
+ bfd_mach_o_load_command *icmd;
+
if (bfd_get_flavour (ibfd) != bfd_target_mach_o_flavour
|| bfd_get_flavour (obfd) != bfd_target_mach_o_flavour)
return TRUE;
BFD_ASSERT (bfd_mach_o_valid (ibfd));
BFD_ASSERT (bfd_mach_o_valid (obfd));
- /* FIXME: copy commands. */
+ imdata = bfd_mach_o_get_data (ibfd);
+ omdata = bfd_mach_o_get_data (obfd);
+
+ /* Copy header flags. */
+ omdata->header.flags = imdata->header.flags;
+
+ /* Copy commands. */
+ for (icmd = imdata->first_command; icmd != NULL; icmd = icmd->next)
+ {
+ bfd_mach_o_load_command *ocmd;
+
+ switch (icmd->type)
+ {
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ case BFD_MACH_O_LC_LOAD_DYLINKER:
+ case BFD_MACH_O_LC_DYLD_INFO:
+ /* Command is copied. */
+ ocmd = bfd_alloc (obfd, sizeof (bfd_mach_o_load_command));
+ if (ocmd == NULL)
+ return FALSE;
+
+ /* Copy common fields. */
+ ocmd->type = icmd->type;
+ ocmd->type_required = icmd->type_required;
+ ocmd->offset = 0;
+ ocmd->len = icmd->len;
+ break;
+
+ default:
+ /* Command is not copied. */
+ continue;
+ break;
+ }
+
+ switch (icmd->type)
+ {
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ {
+ bfd_mach_o_dylib_command *idy = &icmd->command.dylib;
+ bfd_mach_o_dylib_command *ody = &ocmd->command.dylib;
+
+ ody->name_offset = idy->name_offset;
+ ody->timestamp = idy->timestamp;
+ ody->current_version = idy->current_version;
+ ody->compatibility_version = idy->compatibility_version;
+ ody->name_str = idy->name_str;
+ }
+ break;
+
+ case BFD_MACH_O_LC_LOAD_DYLINKER:
+ {
+ bfd_mach_o_dylinker_command *idy = &icmd->command.dylinker;
+ bfd_mach_o_dylinker_command *ody = &ocmd->command.dylinker;
+
+ ody->name_offset = idy->name_offset;
+ ody->name_str = idy->name_str;
+ }
+ break;
+
+ case BFD_MACH_O_LC_DYLD_INFO:
+ {
+ bfd_mach_o_dyld_info_command *idy = &icmd->command.dyld_info;
+ bfd_mach_o_dyld_info_command *ody = &ocmd->command.dyld_info;
+
+ if (bfd_mach_o_read_dyld_content (ibfd, idy))
+ {
+ ody->rebase_size = idy->rebase_size;
+ ody->rebase_content = idy->rebase_content;
+
+ ody->bind_size = idy->bind_size;
+ ody->bind_content = idy->bind_content;
+
+ ody->weak_bind_size = idy->weak_bind_size;
+ ody->weak_bind_content = idy->weak_bind_content;
+
+ ody->lazy_bind_size = idy->lazy_bind_size;
+ ody->lazy_bind_content = idy->lazy_bind_content;
+
+ ody->export_size = idy->export_size;
+ ody->export_content = idy->export_content;
+ }
+ /* PR 17512L: file: 730e492d. */
+ else
+ {
+ ody->rebase_size =
+ ody->bind_size =
+ ody->weak_bind_size =
+ ody->lazy_bind_size =
+ ody->export_size = 0;
+ ody->rebase_content =
+ ody->bind_content =
+ ody->weak_bind_content =
+ ody->lazy_bind_content =
+ ody->export_content = NULL;
+ }
+ }
+ break;
+
+ default:
+ /* That command should be handled. */
+ abort ();
+ }
+
+ /* Insert command. */
+ bfd_mach_o_append_command (obfd, ocmd);
+ }
return TRUE;
}
/* This allows us to set up to 32 bits of flags (unless we invent some
fiendish scheme to subdivide). For now, we'll just set the file flags
without error checking - just overwrite. */
-
+
bfd_boolean
bfd_mach_o_bfd_set_private_flags (bfd *abfd, flagword flags)
{
if (!bfd_mach_o_read_symtab_symbols (abfd))
{
- (*_bfd_error_handler)
+ _bfd_error_handler
(_("bfd_mach_o_canonicalize_symtab: unable to load symbols"));
return 0;
}
bfd_mach_o_dysymtab_command *dysymtab = mdata->dysymtab;
bfd_mach_o_symtab_command *symtab = mdata->symtab;
asymbol *s;
+ char * s_start;
+ char * s_end;
unsigned long count, i, j, n;
size_t size;
char *names;
char *nul_name;
+ const char stub [] = "$stub";
*ret = NULL;
/* Stop now if no symbols or no indirect symbols. */
- if (dysymtab == NULL || symtab == NULL || symtab->symbols == NULL)
- return 0;
-
- if (dysymtab->nindirectsyms == 0)
+ if (dysymtab == NULL || dysymtab->nindirectsyms == 0
+ || symtab == NULL || symtab->symbols == NULL)
return 0;
/* We need to allocate a bfd symbol for every indirect symbol and to
for (j = 0; j < count; j++)
{
+ const char * strng;
unsigned int isym = dysymtab->indirect_syms[j];
/* Some indirect symbols are anonymous. */
- if (isym < symtab->nsyms && symtab->symbols[isym].symbol.name)
- size += strlen (symtab->symbols[isym].symbol.name) + sizeof ("$stub");
+ if (isym < symtab->nsyms && (strng = symtab->symbols[isym].symbol.name))
+ /* PR 17512: file: f5b8eeba. */
+ size += strnlen (strng, symtab->strsize - (strng - symtab->strtab)) + sizeof (stub);
}
- s = *ret = (asymbol *) bfd_malloc (size);
+ s_start = bfd_malloc (size);
+ s = *ret = (asymbol *) s_start;
if (s == NULL)
return -1;
names = (char *) (s + count);
nul_name = names;
*names++ = 0;
-
+ s_end = s_start + size;
+
n = 0;
for (i = 0; i < mdata->nsects; i++)
{
unsigned int first, last;
bfd_vma addr;
bfd_vma entry_size;
-
+
switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
{
case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
last = first + bfd_mach_o_section_get_nbr_indirect (abfd, sec);
addr = sec->addr;
entry_size = bfd_mach_o_section_get_entry_size (abfd, sec);
+
+ /* PR 17512: file: 08e15eec. */
+ if (first >= count || last >= count || first > last)
+ goto fail;
+
for (j = first; j < last; j++)
{
unsigned int isym = dysymtab->indirect_syms[j];
+ /* PR 17512: file: 04d64d9b. */
+ if (((char *) s) + sizeof (* s) > s_end)
+ goto fail;
+
s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
s->section = sec->bfdsection;
s->value = addr - sec->addr;
s->udata.p = NULL;
-
+
if (isym < symtab->nsyms
&& symtab->symbols[isym].symbol.name)
{
s->name = names;
len = strlen (sym);
+ /* PR 17512: file: 47dfd4d2. */
+ if (names + len >= s_end)
+ goto fail;
memcpy (names, sym, len);
names += len;
- memcpy (names, "$stub", sizeof ("$stub"));
- names += sizeof ("$stub");
+ /* PR 17512: file: 18f340a4. */
+ if (names + sizeof (stub) >= s_end)
+ goto fail;
+ memcpy (names, stub, sizeof (stub));
+ names += sizeof (stub);
}
else
s->name = nul_name;
}
return n;
+
+ fail:
+ free (s_start);
+ * ret = NULL;
+ return -1;
}
void
*type = bfd_arch_powerpc;
*subtype = bfd_mach_ppc64;
break;
+ case BFD_MACH_O_CPU_TYPE_ARM64:
+ *type = bfd_arch_aarch64;
+ *subtype = bfd_mach_aarch64;
+ break;
default:
*type = bfd_arch_unknown;
break;
}
}
+/* Write n NUL bytes to ABFD so that LEN + n is a multiple of 4. Return the
+ number of bytes written or -1 in case of error. */
+
+static int
+bfd_mach_o_pad4 (bfd *abfd, unsigned int len)
+{
+ if (len % 4 != 0)
+ {
+ char pad[4] = {0,0,0,0};
+ unsigned int padlen = 4 - (len % 4);
+
+ if (bfd_bwrite (pad, padlen, abfd) != padlen)
+ return -1;
+
+ return padlen;
+ }
+ else
+ return 0;
+}
+
+/* Likewise, but for a command. */
+
+static int
+bfd_mach_o_pad_command (bfd *abfd, unsigned int len)
+{
+ unsigned int align = bfd_mach_o_wide_p (abfd) ? 8 : 4;
+
+ if (len % align != 0)
+ {
+ char pad[8] = {0};
+ unsigned int padlen = align - (len % align);
+
+ if (bfd_bwrite (pad, padlen, abfd) != padlen)
+ return -1;
+
+ return padlen;
+ }
+ else
+ return 0;
+}
+
static bfd_boolean
bfd_mach_o_write_header (bfd *abfd, bfd_mach_o_header *header)
{
return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_write_thread (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_thread_command *cmd = &command->command.thread;
BFD_ASSERT ((command->type == BFD_MACH_O_LC_THREAD)
|| (command->type == BFD_MACH_O_LC_UNIXTHREAD));
- offset = 8;
+ offset = BFD_MACH_O_LC_SIZE;
for (i = 0; i < cmd->nflavours; i++)
{
BFD_ASSERT ((cmd->flavours[i].size % 4) == 0);
if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ return FALSE;
offset += cmd->flavours[i].size + sizeof (raw);
}
- return 0;
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
+ struct mach_o_str_command_external raw;
+ unsigned int namelen;
+
+ bfd_h_put_32 (abfd, cmd->name_offset, raw.str);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ namelen = strlen (cmd->name_str) + 1;
+ if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
+ return FALSE;
+
+ if (bfd_mach_o_pad_command (abfd, namelen) < 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_dylib (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_dylib_command *cmd = &command->command.dylib;
+ struct mach_o_dylib_command_external raw;
+ unsigned int namelen;
+
+ bfd_h_put_32 (abfd, cmd->name_offset, raw.name);
+ bfd_h_put_32 (abfd, cmd->timestamp, raw.timestamp);
+ bfd_h_put_32 (abfd, cmd->current_version, raw.current_version);
+ bfd_h_put_32 (abfd, cmd->compatibility_version, raw.compatibility_version);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ namelen = strlen (cmd->name_str) + 1;
+ if (bfd_bwrite (cmd->name_str, namelen, abfd) != namelen)
+ return FALSE;
+
+ if (bfd_mach_o_pad_command (abfd, namelen) < 0)
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_main (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_main_command *cmd = &command->command.main;
+ struct mach_o_entry_point_command_external raw;
+
+ bfd_h_put_64 (abfd, cmd->entryoff, raw.entryoff);
+ bfd_h_put_64 (abfd, cmd->stacksize, raw.stacksize);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_write_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
+ struct mach_o_dyld_info_command_external raw;
+
+ bfd_h_put_32 (abfd, cmd->rebase_off, raw.rebase_off);
+ bfd_h_put_32 (abfd, cmd->rebase_size, raw.rebase_size);
+ bfd_h_put_32 (abfd, cmd->bind_off, raw.bind_off);
+ bfd_h_put_32 (abfd, cmd->bind_size, raw.bind_size);
+ bfd_h_put_32 (abfd, cmd->weak_bind_off, raw.weak_bind_off);
+ bfd_h_put_32 (abfd, cmd->weak_bind_size, raw.weak_bind_size);
+ bfd_h_put_32 (abfd, cmd->lazy_bind_off, raw.lazy_bind_off);
+ bfd_h_put_32 (abfd, cmd->lazy_bind_size, raw.lazy_bind_size);
+ bfd_h_put_32 (abfd, cmd->export_off, raw.export_off);
+ bfd_h_put_32 (abfd, cmd->export_size, raw.export_size);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ if (cmd->rebase_size != 0)
+ if (bfd_seek (abfd, cmd->rebase_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->rebase_content, cmd->rebase_size, abfd) !=
+ cmd->rebase_size))
+ return FALSE;
+
+ if (cmd->bind_size != 0)
+ if (bfd_seek (abfd, cmd->bind_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->bind_content, cmd->bind_size, abfd) !=
+ cmd->bind_size))
+ return FALSE;
+
+ if (cmd->weak_bind_size != 0)
+ if (bfd_seek (abfd, cmd->weak_bind_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->weak_bind_content, cmd->weak_bind_size, abfd) !=
+ cmd->weak_bind_size))
+ return FALSE;
+
+ if (cmd->lazy_bind_size != 0)
+ if (bfd_seek (abfd, cmd->lazy_bind_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->lazy_bind_content, cmd->lazy_bind_size, abfd) !=
+ cmd->lazy_bind_size))
+ return FALSE;
+
+ if (cmd->export_size != 0)
+ if (bfd_seek (abfd, cmd->export_off, SEEK_SET) != 0
+ || (bfd_bwrite (cmd->export_content, cmd->export_size, abfd) !=
+ cmd->export_size))
+ return FALSE;
+
+ return TRUE;
}
long
return (asect->reloc_count + 1) * sizeof (arelent *);
}
-static int
-bfd_mach_o_canonicalize_one_reloc (bfd *abfd,
- struct mach_o_reloc_info_external *raw,
- arelent *res, asymbol **syms)
+/* In addition to the need to byte-swap the symbol number, the bit positions
+ of the fields in the relocation information vary per target endian-ness. */
+
+void
+bfd_mach_o_swap_in_non_scattered_reloc (bfd *abfd, bfd_mach_o_reloc_info *rel,
+ unsigned char *fields)
+{
+ unsigned char info = fields[3];
+
+ if (bfd_big_endian (abfd))
+ {
+ rel->r_value = (fields[0] << 16) | (fields[1] << 8) | fields[2];
+ rel->r_type = (info >> BFD_MACH_O_BE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
+ rel->r_pcrel = (info & BFD_MACH_O_BE_PCREL) ? 1 : 0;
+ rel->r_length = (info >> BFD_MACH_O_BE_LENGTH_SHIFT)
+ & BFD_MACH_O_LENGTH_MASK;
+ rel->r_extern = (info & BFD_MACH_O_BE_EXTERN) ? 1 : 0;
+ }
+ else
+ {
+ rel->r_value = (fields[2] << 16) | (fields[1] << 8) | fields[0];
+ rel->r_type = (info >> BFD_MACH_O_LE_TYPE_SHIFT) & BFD_MACH_O_TYPE_MASK;
+ rel->r_pcrel = (info & BFD_MACH_O_LE_PCREL) ? 1 : 0;
+ rel->r_length = (info >> BFD_MACH_O_LE_LENGTH_SHIFT)
+ & BFD_MACH_O_LENGTH_MASK;
+ rel->r_extern = (info & BFD_MACH_O_LE_EXTERN) ? 1 : 0;
+ }
+}
+
+/* Set syms_ptr_ptr and addend of RES. */
+
+bfd_boolean
+bfd_mach_o_canonicalize_non_scattered_reloc (bfd *abfd,
+ bfd_mach_o_reloc_info *reloc,
+ arelent *res, asymbol **syms)
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
- bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
- bfd_mach_o_reloc_info reloc;
- bfd_vma addr;
- bfd_vma symnum;
+ unsigned int num;
asymbol **sym;
+ /* Non-scattered relocation. */
+ reloc->r_scattered = 0;
+ res->addend = 0;
+
+ num = reloc->r_value;
+
+ if (reloc->r_extern)
+ {
+ /* PR 17512: file: 8396-1185-0.004. */
+ if (num >= (unsigned) bfd_mach_o_count_symbols (abfd))
+ sym = bfd_und_section_ptr->symbol_ptr_ptr;
+ else if (syms == NULL)
+ sym = bfd_und_section_ptr->symbol_ptr_ptr;
+ else
+ /* An external symbol number. */
+ sym = syms + num;
+ }
+ else if (num == 0x00ffffff || num == 0)
+ {
+ /* The 'symnum' in a non-scattered PAIR is 0x00ffffff. But as this
+ is generic code, we don't know wether this is really a PAIR.
+ This value is almost certainly not a valid section number, hence
+ this specific case to avoid an assertion failure.
+ Target specific swap_reloc_in routine should adjust that. */
+ sym = bfd_abs_section_ptr->symbol_ptr_ptr;
+ }
+ else
+ {
+ /* PR 17512: file: 006-2964-0.004. */
+ if (num > mdata->nsects)
+ return FALSE;
+
+ /* A section number. */
+ sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
+ /* For a symbol defined in section S, the addend (stored in the
+ binary) contains the address of the section. To comply with
+ bfd convention, subtract the section address.
+ Use the address from the header, so that the user can modify
+ the vma of the section. */
+ res->addend = -mdata->sections[num - 1]->addr;
+ }
+
+ /* Note: Pairs for PPC LO/HI/HA are not scattered, but contain the offset
+ in the lower 16bits of the address value. So we have to find the
+ 'symbol' from the preceding reloc. We do this even though the
+ section symbol is probably not needed here, because NULL symbol
+ values cause an assert in generic BFD code. This must be done in
+ the PPC swap_reloc_in routine. */
+ res->sym_ptr_ptr = sym;
+
+ return TRUE;
+}
+
+/* Do most of the work for canonicalize_relocs on RAW: create internal
+ representation RELOC and set most fields of RES using symbol table SYMS.
+ Each target still has to set the howto of RES and possibly adjust other
+ fields.
+ Previously the Mach-O hook point was simply swap_in, but some targets
+ (like arm64) don't follow the generic rules (symnum is a value for the
+ non-scattered relocation ADDEND). */
+
+bfd_boolean
+bfd_mach_o_pre_canonicalize_one_reloc (bfd *abfd,
+ struct mach_o_reloc_info_external *raw,
+ bfd_mach_o_reloc_info *reloc,
+ arelent *res, asymbol **syms)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_vma addr;
+
addr = bfd_get_32 (abfd, raw->r_address);
- symnum = bfd_get_32 (abfd, raw->r_symbolnum);
-
+ res->sym_ptr_ptr = NULL;
+ res->addend = 0;
+
if (addr & BFD_MACH_O_SR_SCATTERED)
{
unsigned int j;
-
- /* Scattered relocation.
- Extract section and offset from r_value. */
- res->sym_ptr_ptr = NULL;
- res->addend = 0;
+ bfd_vma symnum = bfd_get_32 (abfd, raw->r_symbolnum);
+
+ /* Scattered relocation, can't be extern. */
+ reloc->r_scattered = 1;
+ reloc->r_extern = 0;
+
+ /* Extract section and offset from r_value (symnum). */
+ reloc->r_value = symnum;
+ /* FIXME: This breaks when a symbol in a reloc exactly follows the
+ end of the data for the section (e.g. in a calculation of section
+ data length). At present, the symbol will end up associated with
+ the following section or, if it falls within alignment padding, as
+ null - which will assert later. */
for (j = 0; j < mdata->nsects; j++)
{
bfd_mach_o_section *sect = mdata->sections[j];
break;
}
}
+
+ /* Extract the info and address fields from r_address. */
+ reloc->r_type = BFD_MACH_O_GET_SR_TYPE (addr);
+ reloc->r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
+ reloc->r_pcrel = addr & BFD_MACH_O_SR_PCREL;
+ reloc->r_address = BFD_MACH_O_GET_SR_TYPE (addr);
res->address = BFD_MACH_O_GET_SR_ADDRESS (addr);
- reloc.r_type = BFD_MACH_O_GET_SR_TYPE (addr);
- reloc.r_length = BFD_MACH_O_GET_SR_LENGTH (addr);
- reloc.r_pcrel = addr & BFD_MACH_O_SR_PCREL;
- reloc.r_scattered = 1;
}
else
{
- unsigned int num = BFD_MACH_O_GET_R_SYMBOLNUM (symnum);
- res->addend = 0;
+ /* Non-scattered relocation. */
+ reloc->r_scattered = 0;
+ reloc->r_address = addr;
res->address = addr;
- if (symnum & BFD_MACH_O_R_EXTERN)
- {
- sym = syms + num;
- reloc.r_extern = 1;
- }
- else
- {
- BFD_ASSERT (num != 0);
- BFD_ASSERT (num <= mdata->nsects);
- sym = mdata->sections[num - 1]->bfdsection->symbol_ptr_ptr;
- /* For a symbol defined in section S, the addend (stored in the
- binary) contains the address of the section. To comply with
- bfd conventio, substract the section address.
- Use the address from the header, so that the user can modify
- the vma of the section. */
- res->addend = -mdata->sections[num - 1]->addr;
- reloc.r_extern = 0;
- }
- res->sym_ptr_ptr = sym;
- reloc.r_type = BFD_MACH_O_GET_R_TYPE (symnum);
- reloc.r_length = BFD_MACH_O_GET_R_LENGTH (symnum);
- reloc.r_pcrel = (symnum & BFD_MACH_O_R_PCREL) ? 1 : 0;
- reloc.r_scattered = 0;
- }
-
- if (!(*bed->_bfd_mach_o_swap_reloc_in)(res, &reloc))
- return -1;
- return 0;
+
+ /* The value and info fields have to be extracted dependent on target
+ endian-ness. */
+ bfd_mach_o_swap_in_non_scattered_reloc (abfd, reloc, raw->r_symbolnum);
+
+ if (!bfd_mach_o_canonicalize_non_scattered_reloc (abfd, reloc,
+ res, syms))
+ return FALSE;
+ }
+
+ /* We have set up a reloc with all the information present, so the swapper
+ can modify address, value and addend fields, if necessary, to convey
+ information in the generic BFD reloc that is mach-o specific. */
+
+ return TRUE;
}
static int
unsigned long count,
arelent *res, asymbol **syms)
{
+ bfd_mach_o_backend_data *bed = bfd_mach_o_get_backend_data (abfd);
unsigned long i;
struct mach_o_reloc_info_external *native_relocs;
bfd_size_type native_size;
/* Allocate and read relocs. */
native_size = count * BFD_MACH_O_RELENT_SIZE;
+
+ /* PR 17512: file: 09477b57. */
+ if (native_size < count)
+ return -1;
+
native_relocs =
(struct mach_o_reloc_info_external *) bfd_malloc (native_size);
if (native_relocs == NULL)
for (i = 0; i < count; i++)
{
- if (bfd_mach_o_canonicalize_one_reloc (abfd, &native_relocs[i],
- &res[i], syms) < 0)
+ if (!(*bed->_bfd_mach_o_canonicalize_one_reloc)(abfd, &native_relocs[i],
+ &res[i], syms, res))
goto err;
}
free (native_relocs);
return 0;
/* No need to go further if we don't know how to read relocs. */
- if (bed->_bfd_mach_o_swap_reloc_in == NULL)
+ if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
return 0;
if (asect->relocation == NULL)
{
+ if (asect->reloc_count * sizeof (arelent) < asect->reloc_count)
+ return -1;
res = bfd_malloc (asect->reloc_count * sizeof (arelent));
if (res == NULL)
return -1;
return 0;
/* No need to go further if we don't know how to read relocs. */
- if (bed->_bfd_mach_o_swap_reloc_in == NULL)
+ if (bed->_bfd_mach_o_canonicalize_one_reloc == NULL)
return 0;
if (mdata->dyn_reloc_cache == NULL)
{
+ if ((dysymtab->nextrel + dysymtab->nlocrel) * sizeof (arelent)
+ < (dysymtab->nextrel + dysymtab->nlocrel))
+ return -1;
+
res = bfd_malloc ((dysymtab->nextrel + dysymtab->nlocrel)
* sizeof (arelent));
if (res == NULL)
return i;
}
+/* In addition to the need to byte-swap the symbol number, the bit positions
+ of the fields in the relocation information vary per target endian-ness. */
+
+static void
+bfd_mach_o_swap_out_non_scattered_reloc (bfd *abfd, unsigned char *fields,
+ bfd_mach_o_reloc_info *rel)
+{
+ unsigned char info = 0;
+
+ BFD_ASSERT (rel->r_type <= 15);
+ BFD_ASSERT (rel->r_length <= 3);
+
+ if (bfd_big_endian (abfd))
+ {
+ fields[0] = (rel->r_value >> 16) & 0xff;
+ fields[1] = (rel->r_value >> 8) & 0xff;
+ fields[2] = rel->r_value & 0xff;
+ info |= rel->r_type << BFD_MACH_O_BE_TYPE_SHIFT;
+ info |= rel->r_pcrel ? BFD_MACH_O_BE_PCREL : 0;
+ info |= rel->r_length << BFD_MACH_O_BE_LENGTH_SHIFT;
+ info |= rel->r_extern ? BFD_MACH_O_BE_EXTERN : 0;
+ }
+ else
+ {
+ fields[2] = (rel->r_value >> 16) & 0xff;
+ fields[1] = (rel->r_value >> 8) & 0xff;
+ fields[0] = rel->r_value & 0xff;
+ info |= rel->r_type << BFD_MACH_O_LE_TYPE_SHIFT;
+ info |= rel->r_pcrel ? BFD_MACH_O_LE_PCREL : 0;
+ info |= rel->r_length << BFD_MACH_O_LE_LENGTH_SHIFT;
+ info |= rel->r_extern ? BFD_MACH_O_LE_EXTERN : 0;
+ }
+ fields[3] = info;
+}
+
static bfd_boolean
bfd_mach_o_write_relocs (bfd *abfd, bfd_mach_o_section *section)
{
- bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
unsigned int i;
arelent **entries;
asection *sec;
if (bed->_bfd_mach_o_swap_reloc_out == NULL)
return TRUE;
- /* Allocate relocation room. */
- mdata->filelen = FILE_ALIGN(mdata->filelen, 2);
- section->nreloc = sec->reloc_count;
- sec->rel_filepos = mdata->filelen;
- section->reloff = sec->rel_filepos;
- mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
-
if (bfd_seek (abfd, section->reloff, SEEK_SET) != 0)
return FALSE;
v = BFD_MACH_O_SR_SCATTERED
| (pinfo->r_pcrel ? BFD_MACH_O_SR_PCREL : 0)
- | BFD_MACH_O_SET_SR_LENGTH(pinfo->r_length)
- | BFD_MACH_O_SET_SR_TYPE(pinfo->r_type)
- | BFD_MACH_O_SET_SR_ADDRESS(pinfo->r_address);
+ | BFD_MACH_O_SET_SR_LENGTH (pinfo->r_length)
+ | BFD_MACH_O_SET_SR_TYPE (pinfo->r_type)
+ | BFD_MACH_O_SET_SR_ADDRESS (pinfo->r_address);
/* Note: scattered relocs have field in reverse order... */
bfd_put_32 (abfd, v, raw.r_address);
bfd_put_32 (abfd, pinfo->r_value, raw.r_symbolnum);
}
else
{
- unsigned long v;
-
bfd_put_32 (abfd, pinfo->r_address, raw.r_address);
- v = BFD_MACH_O_SET_R_SYMBOLNUM (pinfo->r_value)
- | (pinfo->r_pcrel ? BFD_MACH_O_R_PCREL : 0)
- | BFD_MACH_O_SET_R_LENGTH (pinfo->r_length)
- | (pinfo->r_extern ? BFD_MACH_O_R_EXTERN : 0)
- | BFD_MACH_O_SET_R_TYPE (pinfo->r_type);
- bfd_put_32 (abfd, v, raw.r_symbolnum);
+ bfd_mach_o_swap_out_non_scattered_reloc (abfd, raw.r_symbolnum,
+ pinfo);
}
if (bfd_bwrite (&raw, BFD_MACH_O_RELENT_SIZE, abfd)
return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_write_section_32 (bfd *abfd, bfd_mach_o_section *section)
{
struct mach_o_section_32_external raw;
if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
!= BFD_MACH_O_SECTION_SIZE)
- return -1;
+ return FALSE;
- return 0;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_write_section_64 (bfd *abfd, bfd_mach_o_section *section)
{
struct mach_o_section_64_external raw;
if (bfd_bwrite (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
!= BFD_MACH_O_SECTION_64_SIZE)
- return -1;
+ return FALSE;
- return 0;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_write_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
{
struct mach_o_segment_command_32_external raw;
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
if (!bfd_mach_o_write_relocs (abfd, sec))
- return -1;
+ return FALSE;
memcpy (raw.segname, seg->segname, 16);
bfd_h_put_32 (abfd, seg->vmaddr, raw.vmaddr);
bfd_h_put_32 (abfd, seg->initprot, raw.initprot);
bfd_h_put_32 (abfd, seg->nsects, raw.nsects);
bfd_h_put_32 (abfd, seg->flags, raw.flags);
-
+
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ return FALSE;
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
- if (bfd_mach_o_write_section_32 (abfd, sec))
- return -1;
+ if (!bfd_mach_o_write_section_32 (abfd, sec))
+ return FALSE;
- return 0;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_write_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
{
struct mach_o_segment_command_64_external raw;
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
if (!bfd_mach_o_write_relocs (abfd, sec))
- return -1;
+ return FALSE;
memcpy (raw.segname, seg->segname, 16);
bfd_h_put_64 (abfd, seg->vmaddr, raw.vmaddr);
if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
|| bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ return FALSE;
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
- if (bfd_mach_o_write_section_64 (abfd, sec))
- return -1;
+ if (!bfd_mach_o_write_section_64 (abfd, sec))
+ return FALSE;
- return 0;
+ return TRUE;
}
static bfd_boolean
-bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
+bfd_mach_o_write_symtab_content (bfd *abfd, bfd_mach_o_symtab_command *sym)
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
- bfd_mach_o_symtab_command *sym = &command->command.symtab;
unsigned long i;
unsigned int wide = bfd_mach_o_wide_p (abfd);
- unsigned int symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
struct bfd_strtab_hash *strtab;
asymbol **symbols = bfd_get_outsymbols (abfd);
-
- BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
+ int padlen;
/* Write the symbols first. */
- mdata->filelen = FILE_ALIGN(mdata->filelen, wide ? 3 : 2);
- sym->symoff = mdata->filelen;
if (bfd_seek (abfd, sym->symoff, SEEK_SET) != 0)
return FALSE;
- sym->nsyms = bfd_get_symcount (abfd);
- mdata->filelen += sym->nsyms * symlen;
-
strtab = _bfd_stringtab_init ();
if (strtab == NULL)
return FALSE;
{
bfd_size_type str_index;
bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
-
+
if (s->symbol.name == 0 || s->symbol.name[0] == '\0')
/* An index of 0 always means the empty string. */
str_index = 0;
sym->stroff = mdata->filelen;
mdata->filelen += sym->strsize;
- if (_bfd_stringtab_emit (abfd, strtab) != TRUE)
+ if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0)
goto err;
- _bfd_stringtab_free (strtab);
- /* The command. */
- {
- struct mach_o_symtab_command_external raw;
-
- bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
- bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
- bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
- bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
+ if (!_bfd_stringtab_emit (abfd, strtab))
+ goto err;
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
- return FALSE;
- }
+ /* Pad string table. */
+ padlen = bfd_mach_o_pad4 (abfd, sym->strsize);
+ if (padlen < 0)
+ return FALSE;
+ mdata->filelen += padlen;
+ sym->strsize += padlen;
return TRUE;
err:
_bfd_stringtab_free (strtab);
+ sym->strsize = 0;
return FALSE;
}
+static bfd_boolean
+bfd_mach_o_write_symtab (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_symtab_command *sym = &command->command.symtab;
+ struct mach_o_symtab_command_external raw;
+
+ BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
+
+ /* The command. */
+ bfd_h_put_32 (abfd, sym->symoff, raw.symoff);
+ bfd_h_put_32 (abfd, sym->nsyms, raw.nsyms);
+ bfd_h_put_32 (abfd, sym->stroff, raw.stroff);
+ bfd_h_put_32 (abfd, sym->strsize, raw.strsize);
+
+ if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
+ || bfd_bwrite (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ return TRUE;
+}
+
+/* Count the number of indirect symbols in the image.
+ Requires that the sections are in their final order. */
+
+static unsigned int
+bfd_mach_o_count_indirect_symbols (bfd *abfd, bfd_mach_o_data_struct *mdata)
+{
+ unsigned int i;
+ unsigned int nisyms = 0;
+
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *sec = mdata->sections[i];
+
+ switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ {
+ case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_SYMBOL_STUBS:
+ nisyms += bfd_mach_o_section_get_nbr_indirect (abfd, sec);
+ break;
+ default:
+ break;
+ }
+ }
+ return nisyms;
+}
+
+/* Create the dysymtab. */
+
+static bfd_boolean
+bfd_mach_o_build_dysymtab (bfd *abfd, bfd_mach_o_dysymtab_command *cmd)
+{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+
+ /* TODO:
+ We are not going to try and fill these in yet and, moreover, we are
+ going to bail if they are already set. */
+ if (cmd->nmodtab != 0
+ || cmd->ntoc != 0
+ || cmd->nextrefsyms != 0)
+ {
+ _bfd_error_handler (_("sorry: modtab, toc and extrefsyms are not yet"
+ " implemented for dysymtab commands."));
+ return FALSE;
+ }
+
+ cmd->ilocalsym = 0;
+
+ if (bfd_get_symcount (abfd) > 0)
+ {
+ asymbol **symbols = bfd_get_outsymbols (abfd);
+ unsigned long i;
+
+ /* Count the number of each kind of symbol. */
+ for (i = 0; i < bfd_get_symcount (abfd); ++i)
+ {
+ bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
+ if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
+ break;
+ }
+ cmd->nlocalsym = i;
+ cmd->iextdefsym = i;
+ for (; i < bfd_get_symcount (abfd); ++i)
+ {
+ bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
+ if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
+ break;
+ }
+ cmd->nextdefsym = i - cmd->nlocalsym;
+ cmd->iundefsym = cmd->nextdefsym + cmd->iextdefsym;
+ cmd->nundefsym = bfd_get_symcount (abfd)
+ - cmd->nlocalsym
+ - cmd->nextdefsym;
+ }
+ else
+ {
+ cmd->nlocalsym = 0;
+ cmd->iextdefsym = 0;
+ cmd->nextdefsym = 0;
+ cmd->iundefsym = 0;
+ cmd->nundefsym = 0;
+ }
+
+ cmd->nindirectsyms = bfd_mach_o_count_indirect_symbols (abfd, mdata);
+ if (cmd->nindirectsyms > 0)
+ {
+ unsigned i;
+ unsigned n;
+
+ mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
+ cmd->indirectsymoff = mdata->filelen;
+ mdata->filelen += cmd->nindirectsyms * 4;
+
+ if (cmd->nindirectsyms * 4 < cmd->nindirectsyms)
+ return FALSE;
+ cmd->indirect_syms = bfd_zalloc (abfd, cmd->nindirectsyms * 4);
+ if (cmd->indirect_syms == NULL)
+ return FALSE;
+
+ n = 0;
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *sec = mdata->sections[i];
+
+ switch (sec->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ {
+ case BFD_MACH_O_S_NON_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_LAZY_SYMBOL_POINTERS:
+ case BFD_MACH_O_S_SYMBOL_STUBS:
+ {
+ unsigned j, num;
+ bfd_mach_o_asymbol **isyms = sec->indirect_syms;
+
+ num = bfd_mach_o_section_get_nbr_indirect (abfd, sec);
+ if (isyms == NULL || num == 0)
+ break;
+ /* Record the starting index in the reserved1 field. */
+ sec->reserved1 = n;
+ for (j = 0; j < num; j++, n++)
+ {
+ if (isyms[j] == NULL)
+ cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL;
+ else if (isyms[j]->symbol.section == bfd_abs_section_ptr
+ && ! (isyms[j]->n_type & BFD_MACH_O_N_EXT))
+ cmd->indirect_syms[n] = BFD_MACH_O_INDIRECT_SYM_LOCAL
+ | BFD_MACH_O_INDIRECT_SYM_ABS;
+ else
+ cmd->indirect_syms[n] = isyms[j]->symbol.udata.i;
+ }
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ return TRUE;
+}
+
/* Write a dysymtab command.
TODO: Possibly coalesce writes of smaller objects. */
return FALSE;
}
}
-
+
if (cmd->nindirectsyms > 0)
{
unsigned int i;
bfd_h_put_32 (abfd, cmd->indirect_syms[i], &raw);
if (bfd_bwrite (raw, sizeof (raw), abfd) != sizeof (raw))
return FALSE;
- }
+ }
}
if (cmd->nextrefsyms != 0)
}
else
s->n_type = BFD_MACH_O_N_SECT;
-
+
if (s->symbol.flags & BSF_GLOBAL)
s->n_type |= BFD_MACH_O_N_EXT;
}
&& s->symbol.section != bfd_com_section_ptr)
|| ((s->n_type & BFD_MACH_O_N_STAB) != 0
&& s->symbol.name == NULL))
- s->n_sect = s->symbol.section->target_index;
+ s->n_sect = s->symbol.section->output_section->target_index;
/* Number to preserve order for local and debug syms. */
s->symbol.udata.i = i;
unsigned nsect;
nsect = bfd_count_sections (abfd);
-
+
/* Don't do it if it's already set - assume the application knows what it's
doing. */
if (mdata->nsects == nsect
&& (mdata->nsects == 0 || mdata->sections != NULL))
return TRUE;
+ /* We need to check that this can be done... */
+ if (nsect > 255)
+ {
+ _bfd_error_handler (_("mach-o: there are too many sections (%u)"
+ " maximum is 255,\n"), nsect);
+ return FALSE;
+ }
+
mdata->nsects = nsect;
- mdata->sections = bfd_alloc (abfd,
- mdata->nsects * sizeof (bfd_mach_o_section *));
+ mdata->sections = bfd_alloc2 (abfd,
+ mdata->nsects, sizeof (bfd_mach_o_section *));
if (mdata->sections == NULL)
return FALSE;
- /* We need to check that this can be done... */
- if (nsect > 255)
- (*_bfd_error_handler) (_("mach-o: there are too many sections (%d)"
- " maximum is 255,\n"), nsect);
-
/* Create Mach-O sections.
- Section type, attribute and align should have been set when the
+ Section type, attribute and align should have been set when the
section was created - either read in or specified. */
target_index = 0;
for (sec = abfd->sections; sec; sec = sec->next)
msect->addr = bfd_get_section_vma (abfd, sec);
msect->size = bfd_get_section_size (sec);
- /* Use the largest alignment set, in case it was bumped after the
+ /* Use the largest alignment set, in case it was bumped after the
section was created. */
msect->align = msect->align > bfd_align ? msect->align : bfd_align;
bfd_boolean
bfd_mach_o_write_contents (bfd *abfd)
{
- unsigned int i;
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_load_command *cmd;
+ bfd_mach_o_symtab_command *symtab = NULL;
+ bfd_mach_o_dysymtab_command *dysymtab = NULL;
+ bfd_mach_o_segment_command *linkedit = NULL;
/* Make the commands, if not already present. */
- if (mdata->header.ncmds == 0)
- if (!bfd_mach_o_build_commands (abfd))
- return FALSE;
+ if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
+ return FALSE;
+ abfd->output_has_begun = TRUE;
+ /* Write the header. */
if (!bfd_mach_o_write_header (abfd, &mdata->header))
return FALSE;
- for (i = 0; i < mdata->header.ncmds; i++)
+ /* First pass: allocate the linkedit segment. */
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
+ switch (cmd->type)
+ {
+ case BFD_MACH_O_LC_SEGMENT_64:
+ case BFD_MACH_O_LC_SEGMENT:
+ if (strcmp (cmd->command.segment.segname, "__LINKEDIT") == 0)
+ linkedit = &cmd->command.segment;
+ break;
+ case BFD_MACH_O_LC_SYMTAB:
+ symtab = &cmd->command.symtab;
+ break;
+ case BFD_MACH_O_LC_DYSYMTAB:
+ dysymtab = &cmd->command.dysymtab;
+ break;
+ case BFD_MACH_O_LC_DYLD_INFO:
+ {
+ bfd_mach_o_dyld_info_command *di = &cmd->command.dyld_info;
+
+ if (di->rebase_size != 0)
+ {
+ di->rebase_off = mdata->filelen;
+ mdata->filelen += di->rebase_size;
+ }
+ if (di->bind_size != 0)
+ {
+ di->bind_off = mdata->filelen;
+ mdata->filelen += di->bind_size;
+ }
+ if (di->weak_bind_size != 0)
+ {
+ di->weak_bind_off = mdata->filelen;
+ mdata->filelen += di->weak_bind_size;
+ }
+ if (di->lazy_bind_size != 0)
+ {
+ di->lazy_bind_off = mdata->filelen;
+ mdata->filelen += di->lazy_bind_size;
+ }
+ if (di->export_size != 0)
+ {
+ di->export_off = mdata->filelen;
+ mdata->filelen += di->export_size;
+ }
+ }
+ break;
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ case BFD_MACH_O_LC_LOAD_DYLINKER:
+ case BFD_MACH_O_LC_MAIN:
+ /* Nothing to do. */
+ break;
+ default:
+ _bfd_error_handler
+ (_("unable to allocate data for load command %#x"),
+ cmd->type);
+ break;
+ }
+
+ /* Specially handle symtab and dysymtab. */
+
+ /* Pre-allocate the symbol table (but not the string table). The reason
+ is that the dysymtab is after the symbol table but before the string
+ table (required by the native strip tool). */
+ if (symtab != NULL)
+ {
+ unsigned int symlen;
+ unsigned int wide = bfd_mach_o_wide_p (abfd);
+
+ symlen = wide ? BFD_MACH_O_NLIST_64_SIZE : BFD_MACH_O_NLIST_SIZE;
+
+ /* Align for symbols. */
+ mdata->filelen = FILE_ALIGN (mdata->filelen, wide ? 3 : 2);
+ symtab->symoff = mdata->filelen;
+
+ symtab->nsyms = bfd_get_symcount (abfd);
+ mdata->filelen += symtab->nsyms * symlen;
+ }
+
+ /* Build the dysymtab. */
+ if (dysymtab != NULL)
+ if (!bfd_mach_o_build_dysymtab (abfd, dysymtab))
+ return FALSE;
+
+ /* Write symtab and strtab. */
+ if (symtab != NULL)
+ if (!bfd_mach_o_write_symtab_content (abfd, symtab))
+ return FALSE;
+
+ /* Adjust linkedit size. */
+ if (linkedit != NULL)
+ {
+ /* bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1; */
+
+ linkedit->vmsize = mdata->filelen - linkedit->fileoff;
+ /* linkedit->vmsize = (linkedit->vmsize + pagemask) & ~pagemask; */
+ linkedit->filesize = mdata->filelen - linkedit->fileoff;
+
+ linkedit->initprot = BFD_MACH_O_PROT_READ;
+ linkedit->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
+ | BFD_MACH_O_PROT_EXECUTE;
+ }
+
+ /* Second pass: write commands. */
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
struct mach_o_load_command_external raw;
- bfd_mach_o_load_command *cur = &mdata->commands[i];
unsigned long typeflag;
- typeflag = cur->type | (cur->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
+ typeflag = cmd->type | (cmd->type_required ? BFD_MACH_O_LC_REQ_DYLD : 0);
bfd_h_put_32 (abfd, typeflag, raw.cmd);
- bfd_h_put_32 (abfd, cur->len, raw.cmdsize);
+ bfd_h_put_32 (abfd, cmd->len, raw.cmdsize);
- if (bfd_seek (abfd, cur->offset, SEEK_SET) != 0
+ if (bfd_seek (abfd, cmd->offset, SEEK_SET) != 0
|| bfd_bwrite (&raw, BFD_MACH_O_LC_SIZE, abfd) != 8)
return FALSE;
- switch (cur->type)
+ switch (cmd->type)
{
case BFD_MACH_O_LC_SEGMENT:
- if (bfd_mach_o_write_segment_32 (abfd, cur) != 0)
+ if (!bfd_mach_o_write_segment_32 (abfd, cmd))
return FALSE;
break;
case BFD_MACH_O_LC_SEGMENT_64:
- if (bfd_mach_o_write_segment_64 (abfd, cur) != 0)
+ if (!bfd_mach_o_write_segment_64 (abfd, cmd))
return FALSE;
break;
case BFD_MACH_O_LC_SYMTAB:
- if (!bfd_mach_o_write_symtab (abfd, cur))
+ if (!bfd_mach_o_write_symtab (abfd, cmd))
return FALSE;
break;
case BFD_MACH_O_LC_DYSYMTAB:
- if (!bfd_mach_o_write_dysymtab (abfd, cur))
+ if (!bfd_mach_o_write_dysymtab (abfd, cmd))
return FALSE;
break;
- case BFD_MACH_O_LC_SYMSEG:
- break;
case BFD_MACH_O_LC_THREAD:
case BFD_MACH_O_LC_UNIXTHREAD:
- if (bfd_mach_o_write_thread (abfd, cur) != 0)
+ if (!bfd_mach_o_write_thread (abfd, cmd))
return FALSE;
break;
- case BFD_MACH_O_LC_LOADFVMLIB:
- case BFD_MACH_O_LC_IDFVMLIB:
- case BFD_MACH_O_LC_IDENT:
- case BFD_MACH_O_LC_FVMFILE:
- case BFD_MACH_O_LC_PREPAGE:
case BFD_MACH_O_LC_LOAD_DYLIB:
- case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
- case BFD_MACH_O_LC_ID_DYLIB:
- case BFD_MACH_O_LC_REEXPORT_DYLIB:
- case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
+ if (!bfd_mach_o_write_dylib (abfd, cmd))
+ return FALSE;
+ break;
case BFD_MACH_O_LC_LOAD_DYLINKER:
- case BFD_MACH_O_LC_ID_DYLINKER:
- case BFD_MACH_O_LC_PREBOUND_DYLIB:
- case BFD_MACH_O_LC_ROUTINES:
- case BFD_MACH_O_LC_SUB_FRAMEWORK:
+ if (!bfd_mach_o_write_dylinker (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_MAIN:
+ if (!bfd_mach_o_write_main (abfd, cmd))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_DYLD_INFO:
+ if (!bfd_mach_o_write_dyld_info (abfd, cmd))
+ return FALSE;
break;
default:
- (*_bfd_error_handler) (_("unable to write unknown load command 0x%lx"),
- (unsigned long) cur->type);
+ _bfd_error_handler
+ (_("unable to write unknown load command %#x"),
+ cmd->type);
return FALSE;
}
}
static void
bfd_mach_o_append_section_to_segment (bfd_mach_o_segment_command *seg,
- asection *sec)
+ bfd_mach_o_section *s)
{
- bfd_mach_o_section *s = (bfd_mach_o_section *)sec->used_by_bfd;
if (seg->sect_head == NULL)
seg->sect_head = s;
else
/* Create section Mach-O flags from BFD flags. */
static void
-bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
+bfd_mach_o_set_section_flags_from_bfd (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec)
{
flagword bfd_flags;
bfd_mach_o_section *s = bfd_mach_o_get_mach_o_section (sec);
s->flags = BFD_MACH_O_S_REGULAR;
}
-/* Count the number of sections in the list for the segment named.
-
- The special case of NULL or "" for the segment name is valid for
- an MH_OBJECT file and means 'all sections available'.
-
- Requires that the sections table in mdata be filled in.
-
- Returns the number of sections (0 is valid).
- Any number > 255 signals an invalid section count, although we will,
- perhaps, allow the file to be written (in line with Darwin tools up
- to XCode 4).
-
- A section count of (unsigned long) -1 signals a definite error. */
-
-static unsigned long
-bfd_mach_o_count_sections_for_seg (const char *segment,
- bfd_mach_o_data_struct *mdata)
-{
- unsigned i,j;
- if (mdata == NULL || mdata->sections == NULL)
- return (unsigned long) -1;
-
- /* The MH_OBJECT case, all sections are considered; Although nsects is
- is an unsigned long, the maximum valid section count is 255 and this
- will have been checked already by mangle_sections. */
- if (segment == NULL || segment[0] == '\0')
- return mdata->nsects;
-
- /* Count the number of sections we see in this segment. */
- j = 0;
- for (i = 0; i < mdata->nsects; ++i)
- {
- bfd_mach_o_section *s = mdata->sections[i];
- if (strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) == 0)
- j++;
- }
- return j;
-}
-
static bfd_boolean
-bfd_mach_o_build_seg_command (const char *segment,
- bfd_mach_o_data_struct *mdata,
- bfd_mach_o_segment_command *seg)
+bfd_mach_o_build_obj_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
{
- unsigned i;
- int is_mho = (segment == NULL || segment[0] == '\0');
-
- /* Fill segment command. */
- if (is_mho)
- memset (seg->segname, 0, sizeof (seg->segname));
- else
- strncpy (seg->segname, segment, sizeof (seg->segname));
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ unsigned int i, j;
- /* TODO: fix this up for non-MH_OBJECT cases. */
seg->vmaddr = 0;
-
seg->fileoff = mdata->filelen;
- seg->filesize = 0;
- seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
- | BFD_MACH_O_PROT_EXECUTE;
- seg->initprot = seg->maxprot;
- seg->flags = 0;
- seg->sect_head = NULL;
- seg->sect_tail = NULL;
+ seg->initprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
+ | BFD_MACH_O_PROT_EXECUTE;
+ seg->maxprot = seg->initprot;
- /* Append sections to the segment. */
+ /* Append sections to the segment.
+ This is a little tedious, we have to honor the need to account zerofill
+ sections after all the rest. This forces us to do the calculation of
+ total vmsize in three passes so that any alignment increments are
+ properly accounted. */
for (i = 0; i < mdata->nsects; ++i)
{
bfd_mach_o_section *s = mdata->sections[i];
asection *sec = s->bfdsection;
- /* If we're not making an MH_OBJECT, check whether this section is from
- our segment, and skip if not. Otherwise, just add all sections. */
- if (! is_mho
- && strncmp (segment, s->segname, BFD_MACH_O_SEGNAME_SIZE) != 0)
- continue;
+ /* Although we account for zerofill section sizes in vm order, they are
+ placed in the file in source sequence. */
+ bfd_mach_o_append_section_to_segment (seg, s);
+ s->offset = 0;
+
+ /* Zerofill sections have zero file size & offset, the only content
+ written to the file is the symbols. */
+ if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) == BFD_MACH_O_S_ZEROFILL
+ || ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ == BFD_MACH_O_S_GB_ZEROFILL))
+ continue;
+
+ /* The Darwin system tools (in MH_OBJECT files, at least) always account
+ sections, even those with zero size. */
+ if (s->size > 0)
+ {
+ seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
+ seg->vmsize += s->size;
- bfd_mach_o_append_section_to_segment (seg, sec);
+ /* MH_OBJECT files have unaligned content. */
+ if (1)
+ {
+ seg->filesize = FILE_ALIGN (seg->filesize, s->align);
+ mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
+ }
+ seg->filesize += s->size;
- if (s->size == 0)
- s->offset = 0;
- else
- {
- mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
+ /* The system tools write even zero-sized sections with an offset
+ field set to the current file position. */
s->offset = mdata->filelen;
- }
+ }
sec->filepos = s->offset;
-
mdata->filelen += s->size;
}
- seg->filesize = mdata->filelen - seg->fileoff;
- seg->vmsize = seg->filesize;
+ /* Now pass through again, for zerofill, only now we just update the
+ vmsize, and then for zerofill_GB. */
+ for (j = 0; j < 2; j++)
+ {
+ unsigned int stype;
+
+ if (j == 0)
+ stype = BFD_MACH_O_S_ZEROFILL;
+ else
+ stype = BFD_MACH_O_S_GB_ZEROFILL;
+
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *s = mdata->sections[i];
+
+ if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != stype)
+ continue;
+
+ if (s->size > 0)
+ {
+ seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
+ seg->vmsize += s->size;
+ }
+ }
+ }
+
+ /* Allocate space for the relocations. */
+ mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
+
+ for (i = 0; i < mdata->nsects; ++i)
+ {
+ bfd_mach_o_section *ms = mdata->sections[i];
+ asection *sec = ms->bfdsection;
+
+ ms->nreloc = sec->reloc_count;
+ if (ms->nreloc == 0)
+ {
+ /* Clear nreloc and reloff if there is no relocs. */
+ ms->reloff = 0;
+ continue;
+ }
+ sec->rel_filepos = mdata->filelen;
+ ms->reloff = sec->rel_filepos;
+ mdata->filelen += sec->reloc_count * BFD_MACH_O_RELENT_SIZE;
+ }
return TRUE;
}
static bfd_boolean
-bfd_mach_o_build_dysymtab_command (bfd *abfd,
- bfd_mach_o_data_struct *mdata,
- bfd_mach_o_load_command *cmd)
+bfd_mach_o_build_exec_seg_command (bfd *abfd, bfd_mach_o_segment_command *seg)
{
- bfd_mach_o_dysymtab_command *dsym = &cmd->command.dysymtab;
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ unsigned int i;
+ bfd_vma pagemask = bfd_mach_o_get_backend_data (abfd)->page_size - 1;
+ bfd_vma vma;
+ bfd_mach_o_section *s;
- /* TODO:
- We are not going to try and fill these in yet and, moreover, we are
- going to bail if they are already set. */
- if (dsym->nmodtab != 0
- || dsym->ntoc != 0
- || dsym->nextrefsyms != 0)
+ seg->vmsize = 0;
+
+ seg->fileoff = mdata->filelen;
+ seg->maxprot = 0;
+ seg->initprot = 0;
+ seg->flags = 0;
+
+ /* Append sections to the segment. We assume they are properly ordered
+ by vma (but we check that). */
+ vma = 0;
+ for (i = 0; i < mdata->nsects; ++i)
{
- (*_bfd_error_handler) (_("sorry: modtab, toc and extrefsyms are not yet"
- " implemented for dysymtab commands."));
- return FALSE;
+ s = mdata->sections[i];
+
+ /* Consider only sections for this segment. */
+ if (strcmp (seg->segname, s->segname) != 0)
+ continue;
+
+ bfd_mach_o_append_section_to_segment (seg, s);
+
+ if (s->addr < vma)
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("section address (%#Lx) below start of segment (%#Lx)"),
+ s->addr, vma);
+ return FALSE;
+ }
+
+ vma = s->addr + s->size;
}
- dsym->ilocalsym = 0;
+ /* Set segment file offset: make it page aligned. */
+ vma = seg->sect_head->addr;
+ seg->vmaddr = vma & ~pagemask;
+ if ((mdata->filelen & pagemask) > (vma & pagemask))
+ mdata->filelen += pagemask + 1;
+ seg->fileoff = mdata->filelen & ~pagemask;
+ mdata->filelen = seg->fileoff + (vma & pagemask);
- if (bfd_get_symcount (abfd) > 0)
+ /* Set section file offset. */
+ for (s = seg->sect_head; s != NULL; s = s->next)
{
- asymbol **symbols = bfd_get_outsymbols (abfd);
- unsigned long i;
+ asection *sec = s->bfdsection;
+ flagword flags = bfd_get_section_flags (abfd, sec);
- /* Count the number of each kind of symbol. */
- for (i = 0; i < bfd_get_symcount (abfd); ++i)
+ /* Adjust segment size. */
+ seg->vmsize = FILE_ALIGN (seg->vmsize, s->align);
+ seg->vmsize += s->size;
+
+ /* File offset and length. */
+ seg->filesize = FILE_ALIGN (seg->filesize, s->align);
+
+ if ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK) != BFD_MACH_O_S_ZEROFILL
+ && ((s->flags & BFD_MACH_O_SECTION_TYPE_MASK)
+ != BFD_MACH_O_S_GB_ZEROFILL))
{
- bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
- if (s->n_type & (BFD_MACH_O_N_EXT | BFD_MACH_O_N_PEXT))
- break;
+ mdata->filelen = FILE_ALIGN (mdata->filelen, s->align);
+
+ s->offset = mdata->filelen;
+ s->bfdsection->filepos = s->offset;
+
+ seg->filesize += s->size;
+ mdata->filelen += s->size;
}
- dsym->nlocalsym = i;
- dsym->iextdefsym = i;
- for (; i < bfd_get_symcount (abfd); ++i)
+ else
{
- bfd_mach_o_asymbol *s = (bfd_mach_o_asymbol *)symbols[i];
- if ((s->n_type & BFD_MACH_O_N_TYPE) == BFD_MACH_O_N_UNDF)
- break;
+ s->offset = 0;
+ s->bfdsection->filepos = 0;
+ }
+
+ /* Set protection. */
+ if (flags & SEC_LOAD)
+ {
+ if (flags & SEC_CODE)
+ seg->initprot |= BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_EXECUTE;
+ if ((flags & (SEC_DATA | SEC_READONLY)) == SEC_DATA)
+ seg->initprot |= BFD_MACH_O_PROT_WRITE | BFD_MACH_O_PROT_READ;
}
- dsym->nextdefsym = i - dsym->nlocalsym;
- dsym->iundefsym = dsym->nextdefsym + dsym->iextdefsym;
- dsym->nundefsym = bfd_get_symcount (abfd)
- - dsym->nlocalsym
- - dsym->nextdefsym;
+
+ /* Relocs shouldn't appear in non-object files. */
+ if (s->bfdsection->reloc_count != 0)
+ return FALSE;
}
+
+ /* Set maxprot. */
+ if (seg->initprot != 0)
+ seg->maxprot = BFD_MACH_O_PROT_READ | BFD_MACH_O_PROT_WRITE
+ | BFD_MACH_O_PROT_EXECUTE;
else
- {
- dsym->nlocalsym = 0;
- dsym->iextdefsym = 0;
- dsym->nextdefsym = 0;
- dsym->iundefsym = 0;
- dsym->nundefsym = 0;
- }
+ seg->maxprot = 0;
+
+ /* Round segment size (and file size). */
+ seg->vmsize = (seg->vmsize + pagemask) & ~pagemask;
+ seg->filesize = (seg->filesize + pagemask) & ~pagemask;
+ mdata->filelen = (mdata->filelen + pagemask) & ~pagemask;
+
+ return TRUE;
+}
+
+/* Layout the commands: set commands size and offset, set ncmds and sizeofcmds
+ fields in header. */
+
+static bfd_boolean
+bfd_mach_o_layout_commands (bfd_mach_o_data_struct *mdata)
+{
+ unsigned wide = mach_o_wide_p (&mdata->header);
+ unsigned int hdrlen;
+ ufile_ptr offset;
+ bfd_mach_o_load_command *cmd;
+ unsigned int align;
+ bfd_boolean ret = TRUE;
+
+ hdrlen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
+ align = wide ? 8 - 1 : 4 - 1;
+ offset = hdrlen;
+ mdata->header.ncmds = 0;
- if (dsym->nindirectsyms > 0)
+ for (cmd = mdata->first_command; cmd; cmd = cmd->next)
{
- unsigned i;
+ mdata->header.ncmds++;
+ cmd->offset = offset;
- mdata->filelen = FILE_ALIGN (mdata->filelen, 2);
- dsym->indirectsymoff = mdata->filelen;
- mdata->filelen += dsym->nindirectsyms * 4;
-
- dsym->indirect_syms = bfd_zalloc (abfd, dsym->nindirectsyms * 4);
- if (dsym->indirect_syms == NULL)
- return FALSE;
-
- /* So fill in the indices. */
- for (i = 0; i < dsym->nindirectsyms; ++i)
+ switch (cmd->type)
{
- /* TODO: fill in the table. */
+ case BFD_MACH_O_LC_SEGMENT_64:
+ cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
+ + BFD_MACH_O_SECTION_64_SIZE * cmd->command.segment.nsects;
+ break;
+ case BFD_MACH_O_LC_SEGMENT:
+ cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
+ + BFD_MACH_O_SECTION_SIZE * cmd->command.segment.nsects;
+ break;
+ case BFD_MACH_O_LC_SYMTAB:
+ cmd->len = sizeof (struct mach_o_symtab_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ break;
+ case BFD_MACH_O_LC_DYSYMTAB:
+ cmd->len = sizeof (struct mach_o_dysymtab_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ break;
+ case BFD_MACH_O_LC_LOAD_DYLIB:
+ cmd->len = sizeof (struct mach_o_dylib_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ cmd->command.dylib.name_offset = cmd->len;
+ cmd->len += strlen (cmd->command.dylib.name_str);
+ cmd->len = (cmd->len + align) & ~align;
+ break;
+ case BFD_MACH_O_LC_LOAD_DYLINKER:
+ cmd->len = sizeof (struct mach_o_str_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ cmd->command.dylinker.name_offset = cmd->len;
+ cmd->len += strlen (cmd->command.dylinker.name_str);
+ cmd->len = (cmd->len + align) & ~align;
+ break;
+ case BFD_MACH_O_LC_MAIN:
+ cmd->len = sizeof (struct mach_o_entry_point_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ break;
+ case BFD_MACH_O_LC_DYLD_INFO:
+ cmd->len = sizeof (struct mach_o_dyld_info_command_external)
+ + BFD_MACH_O_LC_SIZE;
+ break;
+ default:
+ _bfd_error_handler
+ (_("unable to layout unknown load command %#x"),
+ cmd->type);
+ ret = FALSE;
+ break;
}
+
+ BFD_ASSERT (cmd->len % (align + 1) == 0);
+ offset += cmd->len;
}
+ mdata->header.sizeofcmds = offset - hdrlen;
+ mdata->filelen = offset;
- return TRUE;
+ return ret;
+}
+
+/* Subroutine of bfd_mach_o_build_commands: set type, name and nsects of a
+ segment. */
+
+static void
+bfd_mach_o_init_segment (bfd_mach_o_data_struct *mdata,
+ bfd_mach_o_load_command *cmd,
+ const char *segname, unsigned int nbr_sect)
+{
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
+ unsigned wide = mach_o_wide_p (&mdata->header);
+
+ /* Init segment command. */
+ cmd->type = wide ? BFD_MACH_O_LC_SEGMENT_64 : BFD_MACH_O_LC_SEGMENT;
+ cmd->type_required = FALSE;
+
+ strcpy (seg->segname, segname);
+ seg->nsects = nbr_sect;
+
+ seg->vmaddr = 0;
+ seg->vmsize = 0;
+
+ seg->fileoff = 0;
+ seg->filesize = 0;
+ seg->maxprot = 0;
+ seg->initprot = 0;
+ seg->flags = 0;
+ seg->sect_head = NULL;
+ seg->sect_tail = NULL;
}
/* Build Mach-O load commands (currently assuming an MH_OBJECT file).
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
unsigned wide = mach_o_wide_p (&mdata->header);
- int segcmd_idx = -1;
+ unsigned int nbr_segcmd = 0;
+ bfd_mach_o_load_command *commands;
+ unsigned int nbr_commands;
int symtab_idx = -1;
int dysymtab_idx = -1;
- unsigned long base_offset = 0;
+ int main_idx = -1;
+ unsigned int i;
- /* Return now if commands are already present. */
- if (mdata->header.ncmds)
- return FALSE;
+ /* Return now if already built. */
+ if (mdata->header.ncmds != 0)
+ return TRUE;
/* Fill in the file type, if not already set. */
-
if (mdata->header.filetype == 0)
{
if (abfd->flags & EXEC_P)
if (!bfd_mach_o_mangle_symbols (abfd))
return FALSE;
- /* Very simple command set (only really applicable to MH_OBJECTs):
- All the commands are optional - present only when there is suitable data.
- (i.e. it is valid to have an empty file)
+ /* Segment commands. */
+ if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
+ {
+ /* Only one segment for all the sections. But the segment is
+ optional if there is no sections. */
+ nbr_segcmd = (mdata->nsects > 0) ? 1 : 0;
+ }
+ else
+ {
+ bfd_mach_o_section *prev_sect = NULL;
- a command (segment) to contain all the sections,
- command for the symbol table,
- a command for the dysymtab.
+ /* One pagezero segment and one linkedit segment. */
+ nbr_segcmd = 2;
- ??? maybe we should assert that this is an MH_OBJECT? */
+ /* Create one segment for associated segment name in sections.
+ Assume that sections with the same segment name are consecutive. */
+ for (i = 0; i < mdata->nsects; i++)
+ {
+ bfd_mach_o_section *this_sect = mdata->sections[i];
- if (mdata->nsects > 0)
- {
- segcmd_idx = 0;
- mdata->header.ncmds = 1;
+ if (prev_sect == NULL
+ || strcmp (prev_sect->segname, this_sect->segname) != 0)
+ {
+ nbr_segcmd++;
+ prev_sect = this_sect;
+ }
+ }
}
+ nbr_commands = nbr_segcmd;
+
+ /* One command for the symbol table (only if there are symbols. */
if (bfd_get_symcount (abfd) > 0)
- {
- mdata->header.ncmds++;
- symtab_idx = segcmd_idx + 1; /* 0 if the seg command is absent. */
- }
+ symtab_idx = nbr_commands++;
/* FIXME:
This is a rather crude test for whether we should build a dysymtab. */
if (bfd_mach_o_should_emit_dysymtab ()
&& bfd_get_symcount (abfd))
{
- mdata->header.ncmds++;
/* If there should be a case where a dysymtab could be emitted without
a symtab (seems improbable), this would need amending. */
- dysymtab_idx = symtab_idx + 1;
+ dysymtab_idx = nbr_commands++;
}
- if (wide)
- base_offset = BFD_MACH_O_HEADER_64_SIZE;
- else
- base_offset = BFD_MACH_O_HEADER_SIZE;
+ /* Add an entry point command. */
+ if (mdata->header.filetype == BFD_MACH_O_MH_EXECUTE
+ && bfd_get_start_address (abfd) != 0)
+ main_idx = nbr_commands++;
/* Well, we must have a header, at least. */
- mdata->filelen = base_offset;
+ mdata->filelen = wide ? BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
/* A bit unusual, but no content is valid;
as -n empty.s -o empty.o */
- if (mdata->header.ncmds == 0)
- return TRUE;
+ if (nbr_commands == 0)
+ {
+ /* Layout commands (well none...) and set headers command fields. */
+ return bfd_mach_o_layout_commands (mdata);
+ }
- mdata->commands = bfd_zalloc (abfd, mdata->header.ncmds
- * sizeof (bfd_mach_o_load_command));
- if (mdata->commands == NULL)
+ /* Create commands for segments (and symtabs), prepend them. */
+ commands = bfd_zalloc (abfd, nbr_commands * sizeof (bfd_mach_o_load_command));
+ if (commands == NULL)
return FALSE;
+ for (i = 0; i < nbr_commands - 1; i++)
+ commands[i].next = &commands[i + 1];
+ commands[nbr_commands - 1].next = mdata->first_command;
+ if (mdata->first_command == NULL)
+ mdata->last_command = &commands[nbr_commands - 1];
+ mdata->first_command = &commands[0];
+
+ if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT && nbr_segcmd != 0)
+ {
+ /* For object file, there is only one segment. */
+ bfd_mach_o_init_segment (mdata, &commands[0], "", mdata->nsects);
+ }
+ else if (nbr_segcmd != 0)
+ {
+ bfd_mach_o_load_command *cmd;
- if (segcmd_idx >= 0)
- {
- bfd_mach_o_load_command *cmd = &mdata->commands[segcmd_idx];
- bfd_mach_o_segment_command *seg = &cmd->command.segment;
+ BFD_ASSERT (nbr_segcmd >= 2);
- /* Count the segctions in the special blank segment used for MH_OBJECT. */
- seg->nsects = bfd_mach_o_count_sections_for_seg (NULL, mdata);
- if (seg->nsects == (unsigned long) -1)
- return FALSE;
+ /* The pagezero. */
+ cmd = &commands[0];
+ bfd_mach_o_init_segment (mdata, cmd, "__PAGEZERO", 0);
- /* Init segment command. */
- cmd->offset = base_offset;
- if (wide)
+ /* Segments from sections. */
+ cmd++;
+ for (i = 0; i < mdata->nsects;)
{
- cmd->type = BFD_MACH_O_LC_SEGMENT_64;
- cmd->len = BFD_MACH_O_LC_SEGMENT_64_SIZE
- + BFD_MACH_O_SECTION_64_SIZE * seg->nsects;
- }
- else
- {
- cmd->type = BFD_MACH_O_LC_SEGMENT;
- cmd->len = BFD_MACH_O_LC_SEGMENT_SIZE
- + BFD_MACH_O_SECTION_SIZE * seg->nsects;
+ const char *segname = mdata->sections[i]->segname;
+ unsigned int nbr_sect = 1;
+
+ /* Count number of sections for this segment. */
+ for (i++; i < mdata->nsects; i++)
+ if (strcmp (mdata->sections[i]->segname, segname) == 0)
+ nbr_sect++;
+ else
+ break;
+
+ bfd_mach_o_init_segment (mdata, cmd, segname, nbr_sect);
+ cmd++;
}
- cmd->type_required = FALSE;
- mdata->header.sizeofcmds = cmd->len;
- mdata->filelen += cmd->len;
+ /* The linkedit. */
+ bfd_mach_o_init_segment (mdata, cmd, "__LINKEDIT", 0);
}
if (symtab_idx >= 0)
{
/* Init symtab command. */
- bfd_mach_o_load_command *cmd = &mdata->commands[symtab_idx];
-
- cmd->type = BFD_MACH_O_LC_SYMTAB;
- cmd->offset = base_offset;
- if (segcmd_idx >= 0)
- cmd->offset += mdata->commands[segcmd_idx].len;
+ bfd_mach_o_load_command *cmd = &commands[symtab_idx];
- cmd->len = sizeof (struct mach_o_symtab_command_external)
- + BFD_MACH_O_LC_SIZE;
+ cmd->type = BFD_MACH_O_LC_SYMTAB;
cmd->type_required = FALSE;
- mdata->header.sizeofcmds += cmd->len;
- mdata->filelen += cmd->len;
}
/* If required, setup symtab command, see comment above about the quality
of this test. */
if (dysymtab_idx >= 0)
{
- bfd_mach_o_load_command *cmd = &mdata->commands[dysymtab_idx];
+ bfd_mach_o_load_command *cmd = &commands[dysymtab_idx];
cmd->type = BFD_MACH_O_LC_DYSYMTAB;
- if (symtab_idx >= 0)
- cmd->offset = mdata->commands[symtab_idx].offset
- + mdata->commands[symtab_idx].len;
- else if (segcmd_idx >= 0)
- cmd->offset = mdata->commands[segcmd_idx].offset
- + mdata->commands[segcmd_idx].len;
- else
- cmd->offset = base_offset;
-
cmd->type_required = FALSE;
- cmd->len = sizeof (struct mach_o_dysymtab_command_external)
- + BFD_MACH_O_LC_SIZE;
+ }
+
+ /* Create the main command. */
+ if (main_idx >= 0)
+ {
+ bfd_mach_o_load_command *cmd = &commands[main_idx];
+
+ cmd->type = BFD_MACH_O_LC_MAIN;
+ cmd->type_required = TRUE;
- mdata->header.sizeofcmds += cmd->len;
- mdata->filelen += cmd->len;
+ cmd->command.main.entryoff = 0;
+ cmd->command.main.stacksize = 0;
}
+ /* Layout commands. */
+ if (! bfd_mach_o_layout_commands (mdata))
+ return FALSE;
+
/* So, now we have sized the commands and the filelen set to that.
Now we can build the segment command and set the section file offsets. */
- if (segcmd_idx >= 0
- && ! bfd_mach_o_build_seg_command
- (NULL, mdata, &mdata->commands[segcmd_idx].command.segment))
- return FALSE;
+ if (mdata->header.filetype == BFD_MACH_O_MH_OBJECT)
+ {
+ for (i = 0; i < nbr_segcmd; i++)
+ if (!bfd_mach_o_build_obj_seg_command
+ (abfd, &commands[i].command.segment))
+ return FALSE;
+ }
+ else
+ {
+ bfd_vma maxvma = 0;
- /* If we're doing a dysymtab, cmd points to its load command. */
- if (dysymtab_idx >= 0
- && ! bfd_mach_o_build_dysymtab_command (abfd, mdata,
- &mdata->commands[dysymtab_idx]))
- return FALSE;
+ /* Skip pagezero and linkedit segments. */
+ for (i = 1; i < nbr_segcmd - 1; i++)
+ {
+ bfd_mach_o_segment_command *seg = &commands[i].command.segment;
+
+ if (!bfd_mach_o_build_exec_seg_command (abfd, seg))
+ return FALSE;
+
+ if (seg->vmaddr + seg->vmsize > maxvma)
+ maxvma = seg->vmaddr + seg->vmsize;
+ }
+
+ /* Set the size of __PAGEZERO. */
+ commands[0].command.segment.vmsize =
+ commands[1].command.segment.vmaddr;
+
+ /* Set the vma and fileoff of __LINKEDIT. */
+ commands[nbr_segcmd - 1].command.segment.vmaddr = maxvma;
+ commands[nbr_segcmd - 1].command.segment.fileoff = mdata->filelen;
+
+ /* Set entry point (once segments have been laid out). */
+ if (main_idx >= 0)
+ commands[main_idx].command.main.entryoff =
+ bfd_get_start_address (abfd) - commands[1].command.segment.vmaddr;
+ }
- /* The symtab command is filled in when the symtab is written. */
return TRUE;
}
/* Trying to write the first section contents will trigger the creation of
the load commands if they are not already present. */
- if (! abfd->output_has_begun && ! bfd_mach_o_build_commands (abfd))
+ if (!abfd->output_has_begun && !bfd_mach_o_build_commands (abfd))
return FALSE;
if (count == 0)
}
static bfd_boolean
-bfd_mach_o_read_header (bfd *abfd, bfd_mach_o_header *header)
+bfd_mach_o_read_header (bfd *abfd, file_ptr hdr_off, bfd_mach_o_header *header)
{
struct mach_o_header_external raw;
unsigned int size;
bfd_vma (*get32) (const void *) = NULL;
/* Just read the magic number. */
- if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
|| bfd_bread (raw.magic, sizeof (raw.magic), abfd) != 4)
return FALSE;
size = mach_o_wide_p (header) ?
BFD_MACH_O_HEADER_64_SIZE : BFD_MACH_O_HEADER_SIZE;
- if (bfd_seek (abfd, 0, SEEK_SET) != 0
+ if (bfd_seek (abfd, hdr_off, SEEK_SET) != 0
|| bfd_bread (&raw, size, abfd) != size)
return FALSE;
if (mach_o_wide_p (header))
header->reserved = (*get32) (raw.reserved);
+ else
+ header->reserved = 0;
return TRUE;
}
if (xlat != NULL)
{
s->flags = xlat->macho_sectype | xlat->macho_secattr;
- s->align = xlat->sectalign > bfdalign ? xlat->sectalign
+ s->align = xlat->sectalign > bfdalign ? xlat->sectalign
: bfdalign;
- bfd_set_section_alignment (abfd, sec, s->align);
+ (void) bfd_set_section_alignment (abfd, sec, s->align);
bfd_flags = bfd_get_section_flags (abfd, sec);
if (bfd_flags == SEC_NO_FLAGS)
bfd_set_section_flags (abfd, sec, xlat->bfd_flags);
}
static asection *
-bfd_mach_o_read_section_32 (bfd *abfd,
- unsigned int offset,
- unsigned long prot)
+bfd_mach_o_read_section_32 (bfd *abfd, unsigned long prot)
{
struct mach_o_section_32_external raw;
asection *sec;
bfd_mach_o_section *section;
- if (bfd_seek (abfd, offset, SEEK_SET) != 0
- || (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
- != BFD_MACH_O_SECTION_SIZE))
+ if (bfd_bread (&raw, BFD_MACH_O_SECTION_SIZE, abfd)
+ != BFD_MACH_O_SECTION_SIZE)
return NULL;
sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
section->size = bfd_h_get_32 (abfd, raw.size);
section->offset = bfd_h_get_32 (abfd, raw.offset);
section->align = bfd_h_get_32 (abfd, raw.align);
+ /* PR 17512: file: 0017eb76. */
+ if (section->align > 64)
+ {
+ _bfd_error_handler
+ (_("bfd_mach_o_read_section_32: overlarge alignment value: %#lx, "
+ "using 32 instead"), section->align);
+ section->align = 32;
+ }
section->reloff = bfd_h_get_32 (abfd, raw.reloff);
section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
section->flags = bfd_h_get_32 (abfd, raw.flags);
}
static asection *
-bfd_mach_o_read_section_64 (bfd *abfd,
- unsigned int offset,
- unsigned long prot)
+bfd_mach_o_read_section_64 (bfd *abfd, unsigned long prot)
{
struct mach_o_section_64_external raw;
asection *sec;
bfd_mach_o_section *section;
- if (bfd_seek (abfd, offset, SEEK_SET) != 0
- || (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
- != BFD_MACH_O_SECTION_64_SIZE))
+ if (bfd_bread (&raw, BFD_MACH_O_SECTION_64_SIZE, abfd)
+ != BFD_MACH_O_SECTION_64_SIZE)
return NULL;
sec = bfd_mach_o_make_bfd_section (abfd, raw.segname, raw.sectname);
section->size = bfd_h_get_64 (abfd, raw.size);
section->offset = bfd_h_get_32 (abfd, raw.offset);
section->align = bfd_h_get_32 (abfd, raw.align);
+ if (section->align > 64)
+ {
+ _bfd_error_handler
+ (_("bfd_mach_o_read_section_64: overlarge alignment value: %#lx, "
+ "using 32 instead"), section->align);
+ section->align = 32;
+ }
section->reloff = bfd_h_get_32 (abfd, raw.reloff);
section->nreloc = bfd_h_get_32 (abfd, raw.nreloc);
section->flags = bfd_h_get_32 (abfd, raw.flags);
}
static asection *
-bfd_mach_o_read_section (bfd *abfd,
- unsigned int offset,
- unsigned long prot,
- unsigned int wide)
+bfd_mach_o_read_section (bfd *abfd, unsigned long prot, unsigned int wide)
{
if (wide)
- return bfd_mach_o_read_section_64 (abfd, offset, prot);
+ return bfd_mach_o_read_section_64 (abfd, prot);
else
- return bfd_mach_o_read_section_32 (abfd, offset, prot);
+ return bfd_mach_o_read_section_32 (abfd, prot);
}
static bfd_boolean
if (bfd_seek (abfd, symoff, SEEK_SET) != 0
|| bfd_bread (&raw, symwidth, abfd) != symwidth)
{
- (*_bfd_error_handler)
- (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %lu"),
- symwidth, (unsigned long) symoff);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_read_symtab_symbol: unable to read %d bytes at %u"),
+ symwidth, symoff);
return FALSE;
}
if (stroff >= sym->strsize)
{
- (*_bfd_error_handler)
- (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %lu)"),
- (unsigned long) stroff,
- (unsigned long) sym->strsize);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_read_symtab_symbol: name out of range (%lu >= %u)"),
+ stroff,
+ sym->strsize);
return FALSE;
}
/* Mach-O uses 0 to mean "no section"; not an error. */
if (section != 0)
{
- (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
- "symbol \"%s\" specified invalid section %d (max %lu): setting to undefined"),
- s->symbol.name, section, mdata->nsects);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_read_symtab_symbol: "
+ "symbol \"%s\" specified invalid section %d (max %lu): "
+ "setting to undefined"),
+ s->symbol.name, section, mdata->nsects);
}
s->symbol.section = bfd_und_section_ptr;
}
s->symbol.value = 0;
break;
default:
- (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbol: "
- "symbol \"%s\" specified invalid type field 0x%x: setting to undefined"),
- s->symbol.name, symtype);
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("bfd_mach_o_read_symtab_symbol: "
+ "symbol \"%s\" specified invalid type field 0x%x: "
+ "setting to undefined"), s->symbol.name, symtype);
s->symbol.section = bfd_und_section_ptr;
break;
}
}
else
{
- sym->strtab = bfd_alloc (abfd, sym->strsize);
+ /* See PR 21840 for a reproducer. */
+ if ((sym->strsize + 1) == 0)
+ return FALSE;
+ sym->strtab = bfd_alloc (abfd, sym->strsize + 1);
if (sym->strtab == NULL)
return FALSE;
if (bfd_seek (abfd, sym->stroff, SEEK_SET) != 0
|| bfd_bread (sym->strtab, sym->strsize, abfd) != sym->strsize)
{
+ /* PR 17512: file: 10888-1609-0.004. */
+ bfd_release (abfd, sym->strtab);
+ sym->strtab = NULL;
bfd_set_error (bfd_error_file_truncated);
return FALSE;
}
+ /* Zero terminate the string table. */
+ sym->strtab[sym->strsize] = 0;
}
return TRUE;
unsigned long i;
if (sym == NULL || sym->symbols)
- {
- /* Return now if there are no symbols or if already loaded. */
- return TRUE;
- }
-
- sym->symbols = bfd_alloc (abfd, sym->nsyms * sizeof (bfd_mach_o_asymbol));
+ /* Return now if there are no symbols or if already loaded. */
+ return TRUE;
+ sym->symbols = bfd_alloc2 (abfd, sym->nsyms, sizeof (bfd_mach_o_asymbol));
if (sym->symbols == NULL)
{
- (*_bfd_error_handler) (_("bfd_mach_o_read_symtab_symbols: unable to allocate memory for symbols"));
+ _bfd_error_handler (_("bfd_mach_o_read_symtab_symbols: "
+ "unable to allocate memory for symbols"));
+ sym->nsyms = 0;
return FALSE;
}
if (!bfd_mach_o_read_symtab_strtab (abfd))
- return FALSE;
+ goto fail;
for (i = 0; i < sym->nsyms; i++)
- {
- if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
- return FALSE;
- }
+ if (!bfd_mach_o_read_symtab_symbol (abfd, sym, &sym->symbols[i], i))
+ goto fail;
return TRUE;
+
+ fail:
+ bfd_release (abfd, sym->symbols);
+ sym->symbols = NULL;
+ sym->nsyms = 0;
+ return FALSE;
}
static const char *
}
}
-static int
+static bfd_boolean
bfd_mach_o_read_dylinker (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_dylinker_command *cmd = &command->command.dylinker;
struct mach_o_str_command_external raw;
unsigned int nameoff;
+ unsigned int namelen;
- BFD_ASSERT ((command->type == BFD_MACH_O_LC_ID_DYLINKER)
- || (command->type == BFD_MACH_O_LC_LOAD_DYLINKER));
-
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
nameoff = bfd_h_get_32 (abfd, raw.str);
- cmd->name_offset = command->offset + nameoff;
- cmd->name_len = command->len - nameoff;
- cmd->name_str = bfd_alloc (abfd, cmd->name_len);
+ cmd->name_offset = nameoff;
+ namelen = command->len - nameoff;
+ nameoff += command->offset;
+ cmd->name_str = bfd_alloc (abfd, namelen);
if (cmd->name_str == NULL)
- return -1;
- if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
- || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
- return -1;
- return 0;
+ return FALSE;
+ if (bfd_seek (abfd, nameoff, SEEK_SET) != 0
+ || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
+ return FALSE;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_read_dylib (bfd *abfd, bfd_mach_o_load_command *command)
{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
bfd_mach_o_dylib_command *cmd = &command->command.dylib;
struct mach_o_dylib_command_external raw;
unsigned int nameoff;
+ unsigned int namelen;
switch (command->type)
{
case BFD_MACH_O_LC_LOAD_DYLIB:
+ case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
case BFD_MACH_O_LC_ID_DYLIB:
case BFD_MACH_O_LC_REEXPORT_DYLIB:
break;
default:
BFD_FAIL ();
- return -1;
+ return FALSE;
}
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
nameoff = bfd_h_get_32 (abfd, raw.name);
cmd->timestamp = bfd_h_get_32 (abfd, raw.timestamp);
cmd->compatibility_version = bfd_h_get_32 (abfd, raw.compatibility_version);
cmd->name_offset = command->offset + nameoff;
- cmd->name_len = command->len - nameoff;
- cmd->name_str = bfd_alloc (abfd, cmd->name_len);
+ namelen = command->len - nameoff;
+ cmd->name_str = bfd_alloc (abfd, namelen);
if (cmd->name_str == NULL)
- return -1;
- if (bfd_seek (abfd, cmd->name_offset, SEEK_SET) != 0
- || bfd_bread (cmd->name_str, cmd->name_len, abfd) != cmd->name_len)
- return -1;
- return 0;
+ return FALSE;
+ if (bfd_seek (abfd, mdata->hdr_offset + cmd->name_offset, SEEK_SET) != 0
+ || bfd_bread (cmd->name_str, namelen, abfd) != namelen)
+ return FALSE;
+ return TRUE;
}
-static int
-bfd_mach_o_read_prebound_dylib (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_mach_o_load_command *command ATTRIBUTE_UNUSED)
+static bfd_boolean
+bfd_mach_o_read_prebound_dylib (bfd *abfd,
+ bfd_mach_o_load_command *command)
{
- /* bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib; */
+ bfd_mach_o_prebound_dylib_command *cmd = &command->command.prebound_dylib;
+ struct mach_o_prebound_dylib_command_external raw;
+ unsigned int nameoff;
+ unsigned int modoff;
+ unsigned int str_len;
+ unsigned char *str;
- BFD_ASSERT (command->type == BFD_MACH_O_LC_PREBOUND_DYLIB);
- return 0;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ nameoff = bfd_h_get_32 (abfd, raw.name);
+ modoff = bfd_h_get_32 (abfd, raw.linked_modules);
+ if (nameoff > command->len || modoff > command->len)
+ return FALSE;
+
+ str_len = command->len - sizeof (raw);
+ str = bfd_alloc (abfd, str_len);
+ if (str == NULL)
+ return FALSE;
+ if (bfd_bread (str, str_len, abfd) != str_len)
+ return FALSE;
+
+ cmd->name_offset = command->offset + nameoff;
+ cmd->nmodules = bfd_h_get_32 (abfd, raw.nmodules);
+ cmd->linked_modules_offset = command->offset + modoff;
+
+ cmd->name_str = (char *)str + nameoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
+ cmd->linked_modules = str + modoff - (sizeof (raw) + BFD_MACH_O_LC_SIZE);
+ return TRUE;
}
-static int
+static bfd_boolean
+bfd_mach_o_read_prebind_cksum (bfd *abfd,
+ bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_prebind_cksum_command *cmd = &command->command.prebind_cksum;
+ struct mach_o_prebind_cksum_command_external raw;
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->cksum = bfd_get_32 (abfd, raw.cksum);
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_read_twolevel_hints (bfd *abfd,
+ bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_twolevel_hints_command *cmd = &command->command.twolevel_hints;
+ struct mach_o_twolevel_hints_command_external raw;
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->offset = bfd_get_32 (abfd, raw.offset);
+ cmd->nhints = bfd_get_32 (abfd, raw.nhints);
+ return TRUE;
+}
+
+static bfd_boolean
bfd_mach_o_read_fvmlib (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_fvmlib_command *fvm = &command->command.fvmlib;
struct mach_o_fvmlib_command_external raw;
unsigned int nameoff;
+ unsigned int namelen;
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
nameoff = bfd_h_get_32 (abfd, raw.name);
fvm->minor_version = bfd_h_get_32 (abfd, raw.minor_version);
fvm->header_addr = bfd_h_get_32 (abfd, raw.header_addr);
fvm->name_offset = command->offset + nameoff;
- fvm->name_len = command->len - nameoff;
- fvm->name_str = bfd_alloc (abfd, fvm->name_len);
+ namelen = command->len - nameoff;
+ fvm->name_str = bfd_alloc (abfd, namelen);
if (fvm->name_str == NULL)
- return -1;
+ return FALSE;
if (bfd_seek (abfd, fvm->name_offset, SEEK_SET) != 0
- || bfd_bread (fvm->name_str, fvm->name_len, abfd) != fvm->name_len)
- return -1;
- return 0;
+ || bfd_bread (fvm->name_str, namelen, abfd) != namelen)
+ return FALSE;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_read_thread (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
struct mach_o_thread_command_external raw;
if (offset >= command->len)
- return -1;
+ return FALSE;
if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
|| bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ return FALSE;
offset += sizeof (raw) + bfd_h_get_32 (abfd, raw.count) * 4;
nflavours++;
}
/* Allocate threads. */
- cmd->flavours = bfd_alloc
- (abfd, nflavours * sizeof (bfd_mach_o_thread_flavour));
+ cmd->flavours = bfd_alloc2
+ (abfd, nflavours, sizeof (bfd_mach_o_thread_flavour));
if (cmd->flavours == NULL)
- return -1;
+ return FALSE;
cmd->nflavours = nflavours;
offset = 8;
struct mach_o_thread_command_external raw;
if (offset >= command->len)
- return -1;
+ return FALSE;
if (nflavours >= cmd->nflavours)
- return -1;
+ return FALSE;
if (bfd_seek (abfd, command->offset + offset, SEEK_SET) != 0
|| bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ return FALSE;
cmd->flavours[nflavours].flavour = bfd_h_get_32 (abfd, raw.flavour);
cmd->flavours[nflavours].offset = command->offset + offset + sizeof (raw);
{
case BFD_MACH_O_CPU_TYPE_POWERPC:
case BFD_MACH_O_CPU_TYPE_POWERPC_64:
- flavourstr = bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
+ flavourstr =
+ bfd_mach_o_ppc_flavour_string (cmd->flavours[i].flavour);
break;
case BFD_MACH_O_CPU_TYPE_I386:
case BFD_MACH_O_CPU_TYPE_X86_64:
- flavourstr = bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
+ flavourstr =
+ bfd_mach_o_i386_flavour_string (cmd->flavours[i].flavour);
break;
default:
flavourstr = "UNKNOWN_ARCHITECTURE";
snamelen = strlen (prefix) + 1 + 20 + 1 + strlen (flavourstr) + 1;
sname = bfd_alloc (abfd, snamelen);
if (sname == NULL)
- return -1;
+ return FALSE;
for (;;)
{
cmd->section = bfdsec;
}
- return 0;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_read_dysymtab (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_dysymtab_command *cmd = &command->command.dysymtab;
{
struct mach_o_dysymtab_command_external raw;
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
cmd->ilocalsym = bfd_h_get_32 (abfd, raw.ilocalsym);
cmd->nlocalsym = bfd_h_get_32 (abfd, raw.nlocalsym);
unsigned int module_len = wide ? 56 : 52;
cmd->dylib_module =
- bfd_alloc (abfd, cmd->nmodtab * sizeof (bfd_mach_o_dylib_module));
+ bfd_alloc2 (abfd, cmd->nmodtab, sizeof (bfd_mach_o_dylib_module));
if (cmd->dylib_module == NULL)
- return -1;
+ return FALSE;
if (bfd_seek (abfd, cmd->modtaboff, SEEK_SET) != 0)
- return -1;
+ return FALSE;
for (i = 0; i < cmd->nmodtab; i++)
{
unsigned char buf[56];
if (bfd_bread ((void *) buf, module_len, abfd) != module_len)
- return -1;
+ return FALSE;
module->module_name_idx = bfd_h_get_32 (abfd, buf + 0);
module->iextdefsym = bfd_h_get_32 (abfd, buf + 4);
if (cmd->ntoc != 0)
{
- unsigned int i;
+ unsigned long i;
- cmd->dylib_toc = bfd_alloc
- (abfd, cmd->ntoc * sizeof (bfd_mach_o_dylib_table_of_content));
+ cmd->dylib_toc = bfd_alloc2
+ (abfd, cmd->ntoc, sizeof (bfd_mach_o_dylib_table_of_content));
if (cmd->dylib_toc == NULL)
- return -1;
+ return FALSE;
if (bfd_seek (abfd, cmd->tocoff, SEEK_SET) != 0)
- return -1;
+ return FALSE;
for (i = 0; i < cmd->ntoc; i++)
{
bfd_mach_o_dylib_table_of_content *toc = &cmd->dylib_toc[i];
if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ return FALSE;
toc->symbol_index = bfd_h_get_32 (abfd, raw.symbol_index);
toc->module_index = bfd_h_get_32 (abfd, raw.module_index);
{
unsigned int i;
- cmd->indirect_syms = bfd_alloc
- (abfd, cmd->nindirectsyms * sizeof (unsigned int));
+ cmd->indirect_syms = bfd_alloc2
+ (abfd, cmd->nindirectsyms, sizeof (unsigned int));
if (cmd->indirect_syms == NULL)
- return -1;
+ return FALSE;
if (bfd_seek (abfd, cmd->indirectsymoff, SEEK_SET) != 0)
- return -1;
+ return FALSE;
for (i = 0; i < cmd->nindirectsyms; i++)
{
unsigned int *is = &cmd->indirect_syms[i];
if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ return FALSE;
*is = bfd_h_get_32 (abfd, raw);
}
unsigned long v;
unsigned int i;
- cmd->ext_refs = bfd_alloc
- (abfd, cmd->nextrefsyms * sizeof (bfd_mach_o_dylib_reference));
+ cmd->ext_refs = bfd_alloc2
+ (abfd, cmd->nextrefsyms, sizeof (bfd_mach_o_dylib_reference));
if (cmd->ext_refs == NULL)
- return -1;
+ return FALSE;
if (bfd_seek (abfd, cmd->extrefsymoff, SEEK_SET) != 0)
- return -1;
+ return FALSE;
for (i = 0; i < cmd->nextrefsyms; i++)
{
bfd_mach_o_dylib_reference *ref = &cmd->ext_refs[i];
if (bfd_bread (raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ return FALSE;
/* Fields isym and flags are written as bit-fields, thus we need
a specific processing for endianness. */
}
if (mdata->dysymtab)
- return -1;
+ return FALSE;
mdata->dysymtab = cmd;
- return 0;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_read_symtab (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_symtab_command *symtab = &command->command.symtab;
BFD_ASSERT (command->type == BFD_MACH_O_LC_SYMTAB);
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
symtab->symoff = bfd_h_get_32 (abfd, raw.symoff);
symtab->nsyms = bfd_h_get_32 (abfd, raw.nsyms);
abfd->flags |= HAS_SYMS;
if (mdata->symtab)
- return -1;
+ return FALSE;
mdata->symtab = symtab;
- return 0;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_read_uuid (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_uuid_command *cmd = &command->command.uuid;
BFD_ASSERT (command->type == BFD_MACH_O_LC_UUID);
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (cmd->uuid, 16, abfd) != 16)
- return -1;
+ if (bfd_bread (cmd->uuid, 16, abfd) != 16)
+ return FALSE;
- return 0;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_read_linkedit (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_linkedit_command *cmd = &command->command.linkedit;
struct mach_o_linkedit_data_command_external raw;
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
cmd->dataoff = bfd_get_32 (abfd, raw.dataoff);
cmd->datasize = bfd_get_32 (abfd, raw.datasize);
- return 0;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_read_str (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_str_command *cmd = &command->command.str;
struct mach_o_str_command_external raw;
unsigned long off;
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
off = bfd_get_32 (abfd, raw.str);
cmd->stroff = command->offset + off;
cmd->str_len = command->len - off;
cmd->str = bfd_alloc (abfd, cmd->str_len);
if (cmd->str == NULL)
- return -1;
+ return FALSE;
if (bfd_seek (abfd, cmd->stroff, SEEK_SET) != 0
|| bfd_bread ((void *) cmd->str, cmd->str_len, abfd) != cmd->str_len)
- return -1;
- return 0;
+ return FALSE;
+ return TRUE;
}
-static int
+static unsigned char *
+bfd_mach_o_alloc_and_read (bfd *abfd, unsigned int off, unsigned int size)
+{
+ unsigned char *buf;
+
+ buf = bfd_alloc (abfd, size);
+ if (buf == NULL)
+ return NULL;
+ if (bfd_seek (abfd, off, SEEK_SET) != 0
+ || bfd_bread (buf, size, abfd) != size)
+ return NULL;
+ return buf;
+}
+
+static bfd_boolean
+bfd_mach_o_read_dyld_content (bfd *abfd, bfd_mach_o_dyld_info_command *cmd)
+{
+ /* Read rebase content. */
+ if (cmd->rebase_content == NULL && cmd->rebase_size != 0)
+ {
+ cmd->rebase_content =
+ bfd_mach_o_alloc_and_read (abfd, cmd->rebase_off, cmd->rebase_size);
+ if (cmd->rebase_content == NULL)
+ return FALSE;
+ }
+
+ /* Read bind content. */
+ if (cmd->bind_content == NULL && cmd->bind_size != 0)
+ {
+ cmd->bind_content =
+ bfd_mach_o_alloc_and_read (abfd, cmd->bind_off, cmd->bind_size);
+ if (cmd->bind_content == NULL)
+ return FALSE;
+ }
+
+ /* Read weak bind content. */
+ if (cmd->weak_bind_content == NULL && cmd->weak_bind_size != 0)
+ {
+ cmd->weak_bind_content = bfd_mach_o_alloc_and_read
+ (abfd, cmd->weak_bind_off, cmd->weak_bind_size);
+ if (cmd->weak_bind_content == NULL)
+ return FALSE;
+ }
+
+ /* Read lazy bind content. */
+ if (cmd->lazy_bind_content == NULL && cmd->lazy_bind_size != 0)
+ {
+ cmd->lazy_bind_content = bfd_mach_o_alloc_and_read
+ (abfd, cmd->lazy_bind_off, cmd->lazy_bind_size);
+ if (cmd->lazy_bind_content == NULL)
+ return FALSE;
+ }
+
+ /* Read export content. */
+ if (cmd->export_content == NULL && cmd->export_size != 0)
+ {
+ cmd->export_content = bfd_mach_o_alloc_and_read
+ (abfd, cmd->export_off, cmd->export_size);
+ if (cmd->export_content == NULL)
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static bfd_boolean
bfd_mach_o_read_dyld_info (bfd *abfd, bfd_mach_o_load_command *command)
{
bfd_mach_o_dyld_info_command *cmd = &command->command.dyld_info;
struct mach_o_dyld_info_command_external raw;
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
cmd->rebase_off = bfd_get_32 (abfd, raw.rebase_off);
cmd->rebase_size = bfd_get_32 (abfd, raw.rebase_size);
+ cmd->rebase_content = NULL;
cmd->bind_off = bfd_get_32 (abfd, raw.bind_off);
cmd->bind_size = bfd_get_32 (abfd, raw.bind_size);
+ cmd->bind_content = NULL;
cmd->weak_bind_off = bfd_get_32 (abfd, raw.weak_bind_off);
cmd->weak_bind_size = bfd_get_32 (abfd, raw.weak_bind_size);
+ cmd->weak_bind_content = NULL;
cmd->lazy_bind_off = bfd_get_32 (abfd, raw.lazy_bind_off);
cmd->lazy_bind_size = bfd_get_32 (abfd, raw.lazy_bind_size);
+ cmd->lazy_bind_content = NULL;
cmd->export_off = bfd_get_32 (abfd, raw.export_off);
cmd->export_size = bfd_get_32 (abfd, raw.export_size);
- return 0;
+ cmd->export_content = NULL;
+ return TRUE;
}
static bfd_boolean
struct mach_o_version_min_command_external raw;
unsigned int ver;
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
return FALSE;
ver = bfd_get_32 (abfd, raw.version);
bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
struct mach_o_encryption_info_command_external raw;
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
return FALSE;
cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
return TRUE;
}
-static int
+static bfd_boolean
+bfd_mach_o_read_encryption_info_64 (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_encryption_info_command *cmd = &command->command.encryption_info;
+ struct mach_o_encryption_info_64_command_external raw;
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->cryptoff = bfd_get_32 (abfd, raw.cryptoff);
+ cmd->cryptsize = bfd_get_32 (abfd, raw.cryptsize);
+ cmd->cryptid = bfd_get_32 (abfd, raw.cryptid);
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_read_main (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_main_command *cmd = &command->command.main;
+ struct mach_o_entry_point_command_external raw;
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ cmd->entryoff = bfd_get_64 (abfd, raw.entryoff);
+ cmd->stacksize = bfd_get_64 (abfd, raw.stacksize);
+ return TRUE;
+}
+
+static bfd_boolean
+bfd_mach_o_read_source_version (bfd *abfd, bfd_mach_o_load_command *command)
+{
+ bfd_mach_o_source_version_command *cmd = &command->command.source_version;
+ struct mach_o_source_version_command_external raw;
+ bfd_uint64_t ver;
+
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
+
+ ver = bfd_get_64 (abfd, raw.version);
+ /* Note: we use a serie of shift to avoid shift > 32 (for which gcc
+ generates warnings) in case of the host doesn't support 64 bit
+ integers. */
+ cmd->e = ver & 0x3ff;
+ ver >>= 10;
+ cmd->d = ver & 0x3ff;
+ ver >>= 10;
+ cmd->c = ver & 0x3ff;
+ ver >>= 10;
+ cmd->b = ver & 0x3ff;
+ ver >>= 10;
+ cmd->a = ver & 0xffffff;
+ return TRUE;
+}
+
+static bfd_boolean
bfd_mach_o_read_segment (bfd *abfd,
bfd_mach_o_load_command *command,
unsigned int wide)
BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT_64);
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
memcpy (seg->segname, raw.segname, 16);
seg->segname[16] = '\0';
BFD_ASSERT (command->type == BFD_MACH_O_LC_SEGMENT);
- if (bfd_seek (abfd, command->offset + BFD_MACH_O_LC_SIZE, SEEK_SET) != 0
- || bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
- return -1;
+ if (bfd_bread (&raw, sizeof (raw), abfd) != sizeof (raw))
+ return FALSE;
memcpy (seg->segname, raw.segname, 16);
seg->segname[16] = '\0';
for (i = 0; i < seg->nsects; i++)
{
- bfd_vma segoff;
asection *sec;
- if (wide)
- segoff = command->offset + BFD_MACH_O_LC_SEGMENT_64_SIZE
- + (i * BFD_MACH_O_SECTION_64_SIZE);
- else
- segoff = command->offset + BFD_MACH_O_LC_SEGMENT_SIZE
- + (i * BFD_MACH_O_SECTION_SIZE);
-
- sec = bfd_mach_o_read_section (abfd, segoff, seg->initprot, wide);
+ sec = bfd_mach_o_read_section (abfd, seg->initprot, wide);
if (sec == NULL)
- return -1;
+ return FALSE;
- bfd_mach_o_append_section_to_segment (seg, sec);
+ bfd_mach_o_append_section_to_segment
+ (seg, bfd_mach_o_get_mach_o_section (sec));
}
- return 0;
+ return TRUE;
}
-static int
+static bfd_boolean
bfd_mach_o_read_segment_32 (bfd *abfd, bfd_mach_o_load_command *command)
{
return bfd_mach_o_read_segment (abfd, command, 0);
}
-static int
+static bfd_boolean
bfd_mach_o_read_segment_64 (bfd *abfd, bfd_mach_o_load_command *command)
{
return bfd_mach_o_read_segment (abfd, command, 1);
}
-static int
+static bfd_boolean
bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
{
+ bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
struct mach_o_load_command_external raw;
unsigned int cmd;
/* Read command type and length. */
- if (bfd_seek (abfd, command->offset, SEEK_SET) != 0
+ if (bfd_seek (abfd, mdata->hdr_offset + command->offset, SEEK_SET) != 0
|| bfd_bread (&raw, BFD_MACH_O_LC_SIZE, abfd) != BFD_MACH_O_LC_SIZE)
- return -1;
+ return FALSE;
cmd = bfd_h_get_32 (abfd, raw.cmd);
command->type = cmd & ~BFD_MACH_O_LC_REQ_DYLD;
switch (command->type)
{
case BFD_MACH_O_LC_SEGMENT:
- if (bfd_mach_o_read_segment_32 (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_segment_32 (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_SEGMENT_64:
- if (bfd_mach_o_read_segment_64 (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_segment_64 (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_SYMTAB:
- if (bfd_mach_o_read_symtab (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_symtab (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_SYMSEG:
break;
case BFD_MACH_O_LC_THREAD:
case BFD_MACH_O_LC_UNIXTHREAD:
- if (bfd_mach_o_read_thread (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_thread (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_LOAD_DYLINKER:
case BFD_MACH_O_LC_ID_DYLINKER:
- if (bfd_mach_o_read_dylinker (abfd, command) != 0)
- return -1;
+ case BFD_MACH_O_LC_DYLD_ENVIRONMENT:
+ if (!bfd_mach_o_read_dylinker (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_LOAD_DYLIB:
+ case BFD_MACH_O_LC_LAZY_LOAD_DYLIB:
case BFD_MACH_O_LC_ID_DYLIB:
case BFD_MACH_O_LC_LOAD_WEAK_DYLIB:
case BFD_MACH_O_LC_REEXPORT_DYLIB:
case BFD_MACH_O_LC_LOAD_UPWARD_DYLIB:
- if (bfd_mach_o_read_dylib (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_dylib (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_PREBOUND_DYLIB:
- if (bfd_mach_o_read_prebound_dylib (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_prebound_dylib (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_LOADFVMLIB:
case BFD_MACH_O_LC_IDFVMLIB:
- if (bfd_mach_o_read_fvmlib (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_fvmlib (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_IDENT:
case BFD_MACH_O_LC_FVMFILE:
case BFD_MACH_O_LC_SUB_LIBRARY:
case BFD_MACH_O_LC_SUB_CLIENT:
case BFD_MACH_O_LC_RPATH:
- if (bfd_mach_o_read_str (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_str (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_DYSYMTAB:
- if (bfd_mach_o_read_dysymtab (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_dysymtab (abfd, command))
+ return FALSE;
break;
- case BFD_MACH_O_LC_TWOLEVEL_HINTS:
case BFD_MACH_O_LC_PREBIND_CKSUM:
+ if (!bfd_mach_o_read_prebind_cksum (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_TWOLEVEL_HINTS:
+ if (!bfd_mach_o_read_twolevel_hints (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_UUID:
- if (bfd_mach_o_read_uuid (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_uuid (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_CODE_SIGNATURE:
case BFD_MACH_O_LC_SEGMENT_SPLIT_INFO:
case BFD_MACH_O_LC_FUNCTION_STARTS:
- if (bfd_mach_o_read_linkedit (abfd, command) != 0)
- return -1;
+ case BFD_MACH_O_LC_DATA_IN_CODE:
+ case BFD_MACH_O_LC_DYLIB_CODE_SIGN_DRS:
+ case BFD_MACH_O_LC_LINKER_OPTIMIZATION_HINT:
+ if (!bfd_mach_o_read_linkedit (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_ENCRYPTION_INFO:
if (!bfd_mach_o_read_encryption_info (abfd, command))
- return -1;
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_ENCRYPTION_INFO_64:
+ if (!bfd_mach_o_read_encryption_info_64 (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_DYLD_INFO:
- if (bfd_mach_o_read_dyld_info (abfd, command) != 0)
- return -1;
+ if (!bfd_mach_o_read_dyld_info (abfd, command))
+ return FALSE;
break;
case BFD_MACH_O_LC_VERSION_MIN_MACOSX:
case BFD_MACH_O_LC_VERSION_MIN_IPHONEOS:
+ case BFD_MACH_O_LC_VERSION_MIN_WATCHOS:
if (!bfd_mach_o_read_version_min (abfd, command))
- return -1;
+ return FALSE;
break;
- default:
- (*_bfd_error_handler)(_("%B: unknown load command 0x%lx"),
- abfd, (unsigned long) command->type);
+ case BFD_MACH_O_LC_MAIN:
+ if (!bfd_mach_o_read_main (abfd, command))
+ return FALSE;
+ break;
+ case BFD_MACH_O_LC_SOURCE_VERSION:
+ if (!bfd_mach_o_read_source_version (abfd, command))
+ return FALSE;
break;
+ default:
+ command->len = 0;
+ _bfd_error_handler (_("%B: unknown load command %#x"),
+ abfd, command->type);
+ return FALSE;
}
- return 0;
+ return TRUE;
}
static void
bfd_mach_o_flatten_sections (bfd *abfd)
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ bfd_mach_o_load_command *cmd;
long csect = 0;
- unsigned long i;
/* Count total number of sections. */
mdata->nsects = 0;
- for (i = 0; i < mdata->header.ncmds; i++)
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
- if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
- || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
+ if (cmd->type == BFD_MACH_O_LC_SEGMENT
+ || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
{
- bfd_mach_o_segment_command *seg;
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
- seg = &mdata->commands[i].command.segment;
mdata->nsects += seg->nsects;
}
}
/* Allocate sections array. */
- mdata->sections = bfd_alloc (abfd,
- mdata->nsects * sizeof (bfd_mach_o_section *));
+ mdata->sections = bfd_alloc2 (abfd,
+ mdata->nsects, sizeof (bfd_mach_o_section *));
/* Fill the array. */
csect = 0;
- for (i = 0; i < mdata->header.ncmds; i++)
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
- if (mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT
- || mdata->commands[i].type == BFD_MACH_O_LC_SEGMENT_64)
+ if (cmd->type == BFD_MACH_O_LC_SEGMENT
+ || cmd->type == BFD_MACH_O_LC_SEGMENT_64)
{
- bfd_mach_o_segment_command *seg;
+ bfd_mach_o_segment_command *seg = &cmd->command.segment;
bfd_mach_o_section *sec;
- seg = &mdata->commands[i].command.segment;
BFD_ASSERT (csect + seg->nsects <= mdata->nsects);
for (sec = seg->sect_head; sec != NULL; sec = sec->next)
bfd_mach_o_scan_start_address (bfd *abfd)
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
- bfd_mach_o_thread_command *cmd = NULL;
+ bfd_mach_o_thread_command *thr = NULL;
+ bfd_mach_o_load_command *cmd;
unsigned long i;
- for (i = 0; i < mdata->header.ncmds; i++)
- if ((mdata->commands[i].type == BFD_MACH_O_LC_THREAD) ||
- (mdata->commands[i].type == BFD_MACH_O_LC_UNIXTHREAD))
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
+ if (cmd->type == BFD_MACH_O_LC_THREAD
+ || cmd->type == BFD_MACH_O_LC_UNIXTHREAD)
{
- cmd = &mdata->commands[i].command.thread;
+ thr = &cmd->command.thread;
break;
}
+ else if (cmd->type == BFD_MACH_O_LC_MAIN && mdata->nsects > 1)
+ {
+ bfd_mach_o_main_command *main_cmd = &cmd->command.main;
+ bfd_mach_o_section *text_sect = mdata->sections[0];
- if (cmd == NULL)
- return FALSE;
+ if (text_sect)
+ {
+ abfd->start_address = main_cmd->entryoff
+ + (text_sect->addr - text_sect->offset);
+ return TRUE;
+ }
+ }
+
+ /* An object file has no start address, so do not fail if not found. */
+ if (thr == NULL)
+ return TRUE;
/* FIXME: create a subtarget hook ? */
- for (i = 0; i < cmd->nflavours; i++)
+ for (i = 0; i < thr->nflavours; i++)
{
if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_I386)
- && (cmd->flavours[i].flavour
- == (unsigned long) BFD_MACH_O_x86_THREAD_STATE32))
+ && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE32))
{
unsigned char buf[4];
- if (bfd_seek (abfd, cmd->flavours[i].offset + 40, SEEK_SET) != 0
+ if (bfd_seek (abfd, thr->flavours[i].offset + 40, SEEK_SET) != 0
|| bfd_bread (buf, 4, abfd) != 4)
return FALSE;
abfd->start_address = bfd_h_get_32 (abfd, buf);
}
else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC)
- && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
+ && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE))
{
unsigned char buf[4];
- if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
+ if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
|| bfd_bread (buf, 4, abfd) != 4)
return FALSE;
abfd->start_address = bfd_h_get_32 (abfd, buf);
}
else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_POWERPC_64)
- && (cmd->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
+ && (thr->flavours[i].flavour == BFD_MACH_O_PPC_THREAD_STATE64))
{
unsigned char buf[8];
- if (bfd_seek (abfd, cmd->flavours[i].offset + 0, SEEK_SET) != 0
+ if (bfd_seek (abfd, thr->flavours[i].offset + 0, SEEK_SET) != 0
|| bfd_bread (buf, 8, abfd) != 8)
return FALSE;
abfd->start_address = bfd_h_get_64 (abfd, buf);
}
else if ((mdata->header.cputype == BFD_MACH_O_CPU_TYPE_X86_64)
- && (cmd->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
+ && (thr->flavours[i].flavour == BFD_MACH_O_x86_THREAD_STATE64))
{
unsigned char buf[8];
- if (bfd_seek (abfd, cmd->flavours[i].offset + (16 * 8), SEEK_SET) != 0
+ if (bfd_seek (abfd, thr->flavours[i].offset + (16 * 8), SEEK_SET) != 0
|| bfd_bread (buf, 8, abfd) != 8)
return FALSE;
&cputype, &cpusubtype);
if (cputype == bfd_arch_unknown)
{
- (*_bfd_error_handler)
+ _bfd_error_handler
+ /* xgettext:c-format */
(_("bfd_mach_o_scan: unknown architecture 0x%lx/0x%lx"),
header->cputype, header->cpusubtype);
return FALSE;
if (header->ncmds != 0)
{
- mdata->commands = bfd_alloc
- (abfd, header->ncmds * sizeof (bfd_mach_o_load_command));
- if (mdata->commands == NULL)
+ bfd_mach_o_load_command *cmd;
+
+ mdata->first_command = NULL;
+ mdata->last_command = NULL;
+
+ cmd = bfd_alloc2 (abfd, header->ncmds, sizeof (bfd_mach_o_load_command));
+ if (cmd == NULL)
return FALSE;
for (i = 0; i < header->ncmds; i++)
{
- bfd_mach_o_load_command *cur = &mdata->commands[i];
+ bfd_mach_o_load_command *cur = &cmd[i];
+
+ bfd_mach_o_append_command (abfd, cur);
if (i == 0)
cur->offset = hdrsize;
else
{
- bfd_mach_o_load_command *prev = &mdata->commands[i - 1];
+ bfd_mach_o_load_command *prev = &cmd[i - 1];
cur->offset = prev->offset + prev->len;
}
- if (bfd_mach_o_read_command (abfd, cur) < 0)
+ if (!bfd_mach_o_read_command (abfd, cur))
return FALSE;
}
}
- if (bfd_mach_o_scan_start_address (abfd) < 0)
+ /* Sections should be flatten before scanning start address. */
+ bfd_mach_o_flatten_sections (abfd);
+ if (!bfd_mach_o_scan_start_address (abfd))
return FALSE;
- bfd_mach_o_flatten_sections (abfd);
return TRUE;
}
{
bfd_mach_o_data_struct *mdata = NULL;
- mdata = bfd_alloc (abfd, sizeof (bfd_mach_o_data_struct));
+ mdata = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
if (mdata == NULL)
return FALSE;
abfd->tdata.mach_o_data = mdata;
mdata->header.sizeofcmds = 0;
mdata->header.flags = 0;
mdata->header.byteorder = BFD_ENDIAN_UNKNOWN;
- mdata->commands = NULL;
+ mdata->first_command = NULL;
+ mdata->last_command = NULL;
mdata->nsects = 0;
mdata->sections = NULL;
mdata->dyn_reloc_cache = NULL;
const bfd_target *
bfd_mach_o_header_p (bfd *abfd,
+ file_ptr hdr_off,
bfd_mach_o_filetype filetype,
bfd_mach_o_cpu_type cputype)
{
- struct bfd_preserve preserve;
bfd_mach_o_header header;
+ bfd_mach_o_data_struct *mdata;
- preserve.marker = NULL;
- if (!bfd_mach_o_read_header (abfd, &header))
+ if (!bfd_mach_o_read_header (abfd, hdr_off, &header))
goto wrong;
if (! (header.byteorder == BFD_ENDIAN_BIG
|| header.byteorder == BFD_ENDIAN_LITTLE))
{
- (*_bfd_error_handler) (_("unknown header byte-order value 0x%lx"),
- (unsigned long) header.byteorder);
+ _bfd_error_handler (_("unknown header byte-order value %#x"),
+ header.byteorder);
goto wrong;
}
if (header.cputype != cputype)
goto wrong;
}
+ else
+ {
+#ifndef BFD64
+ /* Do not recognize 64 architectures if not configured for 64bit targets.
+ This could happen only for generic targets. */
+ if (mach_o_wide_p (&header))
+ goto wrong;
+#endif
+ }
if (filetype)
{
}
}
- preserve.marker = bfd_zalloc (abfd, sizeof (bfd_mach_o_data_struct));
- if (preserve.marker == NULL
- || !bfd_preserve_save (abfd, &preserve))
+ mdata = (bfd_mach_o_data_struct *) bfd_zalloc (abfd, sizeof (*mdata));
+ if (mdata == NULL)
goto fail;
+ mdata->hdr_offset = hdr_off;
- if (!bfd_mach_o_scan (abfd, &header,
- (bfd_mach_o_data_struct *) preserve.marker))
+ if (!bfd_mach_o_scan (abfd, &header, mdata))
goto wrong;
- bfd_preserve_finish (abfd, &preserve);
return abfd->xvec;
wrong:
bfd_set_error (bfd_error_wrong_format);
fail:
- if (preserve.marker != NULL)
- bfd_preserve_restore (abfd, &preserve);
return NULL;
}
static const bfd_target *
bfd_mach_o_gen_object_p (bfd *abfd)
{
- return bfd_mach_o_header_p (abfd, 0, 0);
+ return bfd_mach_o_header_p (abfd, 0, 0, 0);
}
static const bfd_target *
bfd_mach_o_gen_core_p (bfd *abfd)
{
- return bfd_mach_o_header_p (abfd, BFD_MACH_O_MH_CORE, 0);
+ return bfd_mach_o_header_p (abfd, 0, BFD_MACH_O_MH_CORE, 0);
+}
+
+/* Return the base address of ABFD, ie the address at which the image is
+ mapped. The possible initial pagezero is ignored. */
+
+bfd_vma
+bfd_mach_o_get_base_address (bfd *abfd)
+{
+ bfd_mach_o_data_struct *mdata;
+ bfd_mach_o_load_command *cmd;
+
+ /* Check for Mach-O. */
+ if (!bfd_mach_o_valid (abfd))
+ return 0;
+ mdata = bfd_mach_o_get_data (abfd);
+
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
+ {
+ if ((cmd->type == BFD_MACH_O_LC_SEGMENT
+ || cmd->type == BFD_MACH_O_LC_SEGMENT_64))
+ {
+ struct bfd_mach_o_segment_command *segcmd = &cmd->command.segment;
+
+ if (segcmd->initprot != 0)
+ return segcmd->vmaddr;
+ }
+ }
+ return 0;
}
typedef struct mach_o_fat_archentry
} mach_o_fat_data_struct;
const bfd_target *
-bfd_mach_o_archive_p (bfd *abfd)
+bfd_mach_o_fat_archive_p (bfd *abfd)
{
mach_o_fat_data_struct *adata = NULL;
struct mach_o_fat_header_external hdr;
goto error;
adata->archentries =
- bfd_alloc (abfd, adata->nfat_arch * sizeof (mach_o_fat_archentry));
+ bfd_alloc2 (abfd, adata->nfat_arch, sizeof (mach_o_fat_archentry));
if (adata->archentries == NULL)
goto error;
}
abfd->tdata.mach_o_fat_data = adata;
+
return abfd->xvec;
error:
if (ap)
{
/* Use the architecture name if known. */
- abfd->filename = ap->printable_name;
+ abfd->filename = xstrdup (ap->printable_name);
}
else
{
/* Forge a uniq id. */
const size_t namelen = 2 + 8 + 1 + 2 + 8 + 1;
- char *name = bfd_alloc (abfd, namelen);
+ char *name = xmalloc (namelen);
snprintf (name, namelen, "0x%lx-0x%lx",
entry->cputype, entry->cpusubtype);
abfd->filename = name;
}
- areltdata = bfd_zalloc (abfd, sizeof (struct areltdata));
+ areltdata = bfd_zmalloc (sizeof (struct areltdata));
areltdata->parsed_size = entry->size;
abfd->arelt_data = areltdata;
abfd->iostream = NULL;
}
bfd *
-bfd_mach_o_openr_next_archived_file (bfd *archive, bfd *prev)
+bfd_mach_o_fat_openr_next_archived_file (bfd *archive, bfd *prev)
{
mach_o_fat_data_struct *adata;
mach_o_fat_archentry *entry = NULL;
bfd_mach_o_load_command_type type,
bfd_mach_o_load_command **mcommand)
{
- struct mach_o_data_struct *md = bfd_mach_o_get_data (abfd);
- bfd_mach_o_load_command *ncmd = NULL;
- unsigned int i, num;
+ struct mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
+ struct bfd_mach_o_load_command *cmd;
+ unsigned int num;
- BFD_ASSERT (md != NULL);
+ BFD_ASSERT (mdata != NULL);
BFD_ASSERT (mcommand != NULL);
num = 0;
- for (i = 0; i < md->header.ncmds; i++)
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
- struct bfd_mach_o_load_command *cmd = &md->commands[i];
-
if (cmd->type != type)
continue;
if (num == 0)
- ncmd = cmd;
+ *mcommand = cmd;
num++;
}
- *mcommand = ncmd;
return num;
}
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
unsigned long stackaddr = bfd_mach_o_stack_addr (mdata->header.cputype);
- unsigned int i = 0;
+ bfd_mach_o_load_command *cmd;
- for (i = 0; i < mdata->header.ncmds; i++)
+ for (cmd = mdata->first_command; cmd != NULL; cmd = cmd->next)
{
- bfd_mach_o_load_command *cur = &mdata->commands[i];
- bfd_mach_o_segment_command *seg = NULL;
+ bfd_mach_o_segment_command *seg;
- if (cur->type != BFD_MACH_O_LC_SEGMENT)
+ if (cmd->type != BFD_MACH_O_LC_SEGMENT)
continue;
- seg = &cur->command.segment;
+ seg = &cmd->command.segment;
if ((seg->vmaddr + seg->vmsize) == stackaddr)
{
{
unsigned char *buf = NULL;
unsigned int len = 0;
- int ret = -1;
+ int ret;
ret = bfd_mach_o_core_fetch_environment (abfd, &buf, &len);
if (ret < 0)
static bfd_mach_o_uuid_command *
bfd_mach_o_lookup_uuid_command (bfd *abfd)
{
- bfd_mach_o_load_command *uuid_cmd;
+ bfd_mach_o_load_command *uuid_cmd = NULL;
int ncmd = bfd_mach_o_lookup_command (abfd, BFD_MACH_O_LC_UUID, &uuid_cmd);
- if (ncmd != 1)
+ if (ncmd != 1 || uuid_cmd == NULL)
return FALSE;
return &uuid_cmd->command.uuid;
}
if (abfd == NULL || bfd_get_flavour (abfd) != bfd_target_mach_o_flavour)
return NULL;
- if (abfd->my_archive)
+ if (abfd->my_archive && !bfd_is_thin_archive (abfd->my_archive))
base_bfd = abfd->my_archive;
/* BFD may have been opened from a stream. */
if (base_bfd->filename == NULL)
bfd_boolean
bfd_mach_o_find_nearest_line (bfd *abfd,
- asection *section,
asymbol **symbols,
+ asection *section,
bfd_vma offset,
const char **filename_ptr,
const char **functionname_ptr,
- unsigned int *line_ptr)
+ unsigned int *line_ptr,
+ unsigned int *discriminator_ptr)
{
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
if (mdata == NULL)
break;
if (! _bfd_dwarf2_slurp_debug_info (abfd, mdata->dsym_bfd,
dwarf_debug_sections, symbols,
- &mdata->dwarf2_find_line_info))
+ &mdata->dwarf2_find_line_info,
+ FALSE))
return FALSE;
}
break;
default:
return FALSE;
}
- if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections,
- section, symbols, offset,
- filename_ptr, functionname_ptr,
- line_ptr, 0,
- &mdata->dwarf2_find_line_info))
- return TRUE;
- return FALSE;
+ return _bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
+ filename_ptr, functionname_ptr,
+ line_ptr, discriminator_ptr,
+ dwarf_debug_sections, 0,
+ &mdata->dwarf2_find_line_info);
}
bfd_boolean
if (mdata->dsym_bfd != NULL)
{
bfd *fat_bfd = mdata->dsym_bfd->my_archive;
+#if 0
+ /* FIXME: PR 19435: This calculation to find the memory allocated by
+ bfd_mach_o_follow_dsym for the filename does not always end up
+ selecting the correct pointer. Unfortunately this problem is
+ very hard to reproduce on a non Mach-O native system, so until it
+ can be traced and fixed on such a system, this code will remain
+ commented out. This does mean that there will be a memory leak,
+ but it is small, and happens when we are closing down, so it
+ should not matter too much. */
char *dsym_filename = (char *)(fat_bfd
? fat_bfd->filename
: mdata->dsym_bfd->filename);
+#endif
bfd_close (mdata->dsym_bfd);
mdata->dsym_bfd = NULL;
if (fat_bfd)
bfd_close (fat_bfd);
+#if 0
free (dsym_filename);
+#endif
}
}
return TRUE;
}
-#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
+#define bfd_mach_o_bfd_reloc_type_lookup _bfd_norelocs_bfd_reloc_type_lookup
#define bfd_mach_o_bfd_reloc_name_lookup _bfd_norelocs_bfd_reloc_name_lookup
-#define bfd_mach_o_swap_reloc_in NULL
+#define bfd_mach_o_canonicalize_one_reloc NULL
#define bfd_mach_o_swap_reloc_out NULL
#define bfd_mach_o_print_thread NULL
#define bfd_mach_o_tgt_seg_table NULL
#define TARGET_NAME mach_o_be_vec
#define TARGET_STRING "mach-o-be"
#define TARGET_ARCHITECTURE bfd_arch_unknown
+#define TARGET_PAGESIZE 1
#define TARGET_BIG_ENDIAN 1
#define TARGET_ARCHIVE 0
#define TARGET_PRIORITY 1
#undef TARGET_NAME
#undef TARGET_STRING
#undef TARGET_ARCHITECTURE
+#undef TARGET_PAGESIZE
#undef TARGET_BIG_ENDIAN
#undef TARGET_ARCHIVE
#undef TARGET_PRIORITY
#define TARGET_NAME mach_o_le_vec
#define TARGET_STRING "mach-o-le"
#define TARGET_ARCHITECTURE bfd_arch_unknown
+#define TARGET_PAGESIZE 1
#define TARGET_BIG_ENDIAN 0
#define TARGET_ARCHIVE 0
#define TARGET_PRIORITY 1
#undef TARGET_NAME
#undef TARGET_STRING
#undef TARGET_ARCHITECTURE
+#undef TARGET_PAGESIZE
#undef TARGET_BIG_ENDIAN
#undef TARGET_ARCHIVE
#undef TARGET_PRIORITY
/* Not yet handled: creating an archive. */
#define bfd_mach_o_mkarchive _bfd_noarchive_mkarchive
+#define bfd_mach_o_close_and_cleanup bfd_true
+
/* Not used. */
-#define bfd_mach_o_read_ar_hdr _bfd_noarchive_read_ar_hdr
-#define bfd_mach_o_write_ar_hdr _bfd_noarchive_write_ar_hdr
-#define bfd_mach_o_slurp_armap _bfd_noarchive_slurp_armap
-#define bfd_mach_o_slurp_extended_name_table _bfd_noarchive_slurp_extended_name_table
-#define bfd_mach_o_construct_extended_name_table _bfd_noarchive_construct_extended_name_table
-#define bfd_mach_o_truncate_arname _bfd_noarchive_truncate_arname
-#define bfd_mach_o_write_armap _bfd_noarchive_write_armap
-#define bfd_mach_o_get_elt_at_index _bfd_noarchive_get_elt_at_index
#define bfd_mach_o_generic_stat_arch_elt bfd_mach_o_fat_stat_arch_elt
-#define bfd_mach_o_update_armap_timestamp _bfd_noarchive_update_armap_timestamp
+#define bfd_mach_o_openr_next_archived_file bfd_mach_o_fat_openr_next_archived_file
+#define bfd_mach_o_archive_p bfd_mach_o_fat_archive_p
#define TARGET_NAME mach_o_fat_vec
#define TARGET_STRING "mach-o-fat"
#define TARGET_ARCHITECTURE bfd_arch_unknown
+#define TARGET_PAGESIZE 1
#define TARGET_BIG_ENDIAN 1
#define TARGET_ARCHIVE 1
#define TARGET_PRIORITY 0
#undef TARGET_NAME
#undef TARGET_STRING
#undef TARGET_ARCHITECTURE
+#undef TARGET_PAGESIZE
#undef TARGET_BIG_ENDIAN
#undef TARGET_ARCHIVE
#undef TARGET_PRIORITY