static bfd_boolean
read_section_stabs_debugging_info (bfd *abfd, asymbol **syms, long symcount,
void *dhandle, bfd_boolean *pfound)
{
static struct
{
const char *secname;
const char *strsecname;
}
names[] =
{
{ ".stab", ".stabstr" },
{ "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr" },
{ "$GDB_SYMBOLS$", "$GDB_STRINGS$" }
};
unsigned int i;
void *shandle;
*pfound = FALSE;
shandle = NULL;
for (i = 0; i < sizeof names / sizeof names[0]; i++)
{
asection *sec, *strsec;
sec = bfd_get_section_by_name (abfd, names[i].secname);
strsec = bfd_get_section_by_name (abfd, names[i].strsecname);
if (sec != NULL && strsec != NULL)
{
bfd_size_type stabsize, strsize;
bfd_byte *stabs, *strings;
bfd_byte *stab;
bfd_size_type stroff, next_stroff;
stabsize = bfd_section_size (abfd, sec);
stabs = (bfd_byte *) xmalloc (stabsize);
if (! bfd_get_section_contents (abfd, sec, stabs, 0, stabsize))
{
fprintf (stderr, "%s: %s: %s\n",
bfd_get_filename (abfd), names[i].secname,
bfd_errmsg (bfd_get_error ()));
return FALSE;
}
strsize = bfd_section_size (abfd, strsec);
strings = (bfd_byte *) xmalloc (strsize + 1);
if (! bfd_get_section_contents (abfd, strsec, strings, 0, strsize))
{
fprintf (stderr, "%s: %s: %s\n",
bfd_get_filename (abfd), names[i].strsecname,
bfd_errmsg (bfd_get_error ()));
return FALSE;
}
/* Zero terminate the strings table, just in case. */
strings [strsize] = 0;
if (shandle == NULL)
{
shandle = start_stab (dhandle, abfd, TRUE, syms, symcount);
if (shandle == NULL)
return FALSE;
}
*pfound = TRUE;
stroff = 0;
next_stroff = 0;
/* PR 17512: file: 078-60391-0.001:0.1. */
for (stab = stabs; stab <= (stabs + stabsize) - 12; stab += 12)
{
unsigned int strx;
int type;
int other ATTRIBUTE_UNUSED;
int desc;
bfd_vma value;
/* This code presumes 32 bit values. */
strx = bfd_get_32 (abfd, stab);
type = bfd_get_8 (abfd, stab + 4);
other = bfd_get_8 (abfd, stab + 5);
desc = bfd_get_16 (abfd, stab + 6);
value = bfd_get_32 (abfd, stab + 8);
if (type == 0)
{
/* Special type 0 stabs indicate the offset to the
next string table. */
stroff = next_stroff;
next_stroff += value;
}
else
{
size_t len;
char *f, *s;
if (stroff + strx >= strsize)
{
fprintf (stderr, _("%s: %s: stab entry %ld is corrupt, strx = 0x%x, type = %d\n"),
bfd_get_filename (abfd), names[i].secname,
(long) (stab - stabs) / 12, strx, type);
continue;
}
s = (char *) strings + stroff + strx;
f = NULL;
/* PR 17512: file: 002-87578-0.001:0.1.
It is possible to craft a file where, without the 'strlen (s) > 0',
an attempt to read the byte before 'strings' would occur. */
while ((len = strlen (s)) > 0
&& s[len - 1] == '\\'
&& stab + 12 < stabs + stabsize)
{
char *p;
stab += 12;
p = s + len - 1;
*p = '\0';
strx = stroff + bfd_get_32 (abfd, stab);
if (strx >= strsize)
{
fprintf (stderr, _("%s: %s: stab entry %ld is corrupt\n"),
bfd_get_filename (abfd), names[i].secname,
(long) (stab - stabs) / 12);
break;
}
else
s = concat (s, (char *) strings + strx,
(const char *) NULL);
/* We have to restore the backslash, because, if
the linker is hashing stabs strings, we may
see the same string more than once. */
*p = '\\';
if (f != NULL)
free (f);
f = s;
}
save_stab (type, desc, value, s);
if (! parse_stab (dhandle, shandle, type, desc, value, s))
{
stab_context ();
free_saved_stabs ();
return FALSE;
}
/* Don't free f, since I think the stabs code
expects strings to hang around. This should be
straightened out. FIXME. */
}
}
free_saved_stabs ();
free (stabs);
/* Don't free strings, since I think the stabs code expects
the strings to hang around. This should be straightened
out. FIXME. */
}
}
if (shandle != NULL)
{
if (! finish_stab (dhandle, shandle))
return FALSE;
}
return TRUE;
}
static void
extra_case (bfd *in_abfd,
struct bfd_link_info *link_info,
struct bfd_link_order *link_order,
arelent *reloc,
bfd_byte *data,
unsigned int *src_ptr,
unsigned int *dst_ptr)
{
asection * input_section = link_order->u.indirect.section;
switch (reloc->howto->type)
{
case R_IMM8:
bfd_put_8 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
data + *dst_ptr);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_IMM32:
/* If no flags are set, assume immediate value. */
if (! (*reloc->sym_ptr_ptr)->section->flags)
{
bfd_put_32 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info,
input_section),
data + *dst_ptr);
}
else
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
/* Addresses are 23 bit, and the layout of those in a 32-bit
value is as follows:
1AAAAAAA xxxxxxxx AAAAAAAA AAAAAAAA
(A - address bits, x - ignore). */
dst = (dst & 0xffff) | ((dst & 0xff0000) << 8) | 0x80000000;
bfd_put_32 (in_abfd, dst, data + *dst_ptr);
}
(*dst_ptr) += 4;
(*src_ptr) += 4;
break;
case R_IMM4L:
bfd_put_8 (in_abfd,
((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0)
| (0x0f
& bfd_coff_reloc16_get_value (reloc, link_info,
input_section))),
data + *dst_ptr);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_IMM16:
bfd_put_16 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
data + *dst_ptr);
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
case R_JR:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = (link_order->offset
+ *dst_ptr
+ input_section->output_section->vma);
/* -1L, since we are in the odd byte of the word, and the pc has been
* incremented: */
ptrdiff_t gap = ((ptrdiff_t)(dst - dot) - 1L);
if (gap & 1L)
abort();
gap /= 2L;
if ((gap > 128L) || (gap < -128L))
{
if (!((*link_info->callbacks->reloc_overflow)
(link_info, NULL,
bfd_asymbol_name(*reloc->sym_ptr_ptr),
reloc->howto->name, reloc->addend, input_section->owner,
input_section, reloc->address)))
abort();
}
bfd_put_8(in_abfd, gap, (data + *dst_ptr));
(*dst_ptr)++;
(*src_ptr)++;
break;
}
case R_DISP7:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = (link_order->offset
+ *dst_ptr
+ input_section->output_section->vma);
/* -1L, since we are in the odd byte of the word, and the pc has been
* incremented: */
ptrdiff_t gap = ((ptrdiff_t)(dst - dot) - 1L);
if (gap & 1L)
abort();
gap /= 2L;
if ((gap > 0L) || (gap < -127L))
{
if (!((*link_info->callbacks->reloc_overflow)
(link_info, NULL,
bfd_asymbol_name(*reloc->sym_ptr_ptr),
reloc->howto->name, reloc->addend, input_section->owner,
input_section, reloc->address)))
abort();
}
bfd_put_8(in_abfd,
(bfd_get_8(in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f),
(data + *dst_ptr));
(*dst_ptr)++;
(*src_ptr)++;
break;
}
case R_CALLR:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = (link_order->offset
+ *dst_ptr
+ input_section->output_section->vma);
ptrdiff_t gap = ((ptrdiff_t)(dst - dot) - 2L);
if (gap & 1L)
abort();
if ((gap > 4096L) || (gap < -4095L))
{
if (!((*link_info->callbacks->reloc_overflow)
(link_info, NULL,
bfd_asymbol_name(*reloc->sym_ptr_ptr),
reloc->howto->name, reloc->addend, input_section->owner,
input_section, reloc->address)))
abort();
}
gap /= 2L;
bfd_put_16(in_abfd,
((bfd_get_16(in_abfd, (data + *dst_ptr)) & 0xf000)
| (-gap & 0x0fff)),
(data + *dst_ptr));
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
}
case R_REL16:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = (link_order->offset
+ *dst_ptr
+ input_section->output_section->vma);
ptrdiff_t gap = ((ptrdiff_t)(dst - dot) - 2L);
if ((gap > 32767L) || (gap < -32768L))
{
if (!((*link_info->callbacks->reloc_overflow)
(link_info, NULL,
bfd_asymbol_name(*reloc->sym_ptr_ptr),
reloc->howto->name, reloc->addend, input_section->owner,
input_section, reloc->address)))
abort();
}
bfd_put_16(in_abfd, (bfd_vma)gap, (data + *dst_ptr));
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
}
default:
abort();
}
}
useless for a relocation, so we just get the offset value and place
a version of this within the object code.
tic30_aout_final_link_relocate will then calculate the required
relocation to add on to the value in the object code. */
static bfd_reloc_status_type
tic30_aout_fix_pcrel_16 (bfd *abfd,
arelent *reloc_entry,
asymbol *symbol ATTRIBUTE_UNUSED,
void * data,
asection *input_section ATTRIBUTE_UNUSED,
bfd *output_bfd ATTRIBUTE_UNUSED,
char **error_message ATTRIBUTE_UNUSED)
{
bfd_vma relocation = 1;
bfd_byte offset_data = bfd_get_8 (abfd, (bfd_byte *) data + reloc_entry->address - 1);
/* The byte before the location of the fix contains bits 23-16 of
the pcrel instruction. Bit 21 is set for a delayed instruction
which requires on offset of 3 instead of 1. */
if (offset_data & 0x20)
relocation -= 3;
else
relocation -= 1;
bfd_put_16 (abfd, relocation, (bfd_byte *) data + reloc_entry->address);
return bfd_reloc_ok;
}
/* This function is used as a callback for 16-bit relocs. This is
required for relocations between segments. A line in aoutx.h
requires that any relocations for the data section should point to
static bfd_boolean
read_section_stabs_debugging_info (bfd *abfd, asymbol **syms, long symcount,
void *dhandle, bfd_boolean *pfound)
{
static struct
{
const char *secname;
const char *strsecname;
} names[] = { { ".stab", ".stabstr" },
{ "LC_SYMTAB.stabs", "LC_SYMTAB.stabstr" } };
unsigned int i;
void *shandle;
*pfound = FALSE;
shandle = NULL;
for (i = 0; i < sizeof names / sizeof names[0]; i++)
{
asection *sec, *strsec;
sec = bfd_get_section_by_name (abfd, names[i].secname);
strsec = bfd_get_section_by_name (abfd, names[i].strsecname);
if (sec != NULL && strsec != NULL)
{
bfd_size_type stabsize, strsize;
bfd_byte *stabs, *strings;
bfd_byte *stab;
bfd_size_type stroff, next_stroff;
stabsize = bfd_section_size (abfd, sec);
stabs = (bfd_byte *) xmalloc (stabsize);
if (! bfd_get_section_contents (abfd, sec, stabs, 0, stabsize))
{
fprintf (stderr, "%s: %s: %s\n",
bfd_get_filename (abfd), names[i].secname,
bfd_errmsg (bfd_get_error ()));
return FALSE;
}
strsize = bfd_section_size (abfd, strsec);
strings = (bfd_byte *) xmalloc (strsize);
if (! bfd_get_section_contents (abfd, strsec, strings, 0, strsize))
{
fprintf (stderr, "%s: %s: %s\n",
bfd_get_filename (abfd), names[i].strsecname,
bfd_errmsg (bfd_get_error ()));
return FALSE;
}
if (shandle == NULL)
{
shandle = start_stab (dhandle, abfd, TRUE, syms, symcount);
if (shandle == NULL)
return FALSE;
}
*pfound = TRUE;
stroff = 0;
next_stroff = 0;
for (stab = stabs; stab < (stabs + stabsize); stab += 12)
{
unsigned int strx;
int type;
int other;
int desc;
bfd_vma value;
/* This code presumes 32 bit values: */
strx = bfd_get_32(abfd, stab);
type = bfd_get_8(abfd, stab + 4);
other = bfd_get_8(abfd, stab + 5);
desc = bfd_get_16(abfd, stab + 6);
value = bfd_get_32(abfd, stab + 8);
if (type == 0)
{
/* Special type 0 stabs indicate the offset to the
next string table. */
stroff = next_stroff;
next_stroff += value;
}
else
{
char *f, *s;
f = NULL;
if ((stroff + strx) > strsize)
{
fprintf(stderr,
"%s: %s: stab entry %ld is corrupt, strx = 0x%x, type = %d, other = %d\n",
bfd_get_filename(abfd), names[i].secname,
(long)(stab - stabs) / 12, strx, type,
other);
continue;
}
s = (char *) strings + stroff + strx;
while (s[strlen (s) - 1] == '\\'
&& stab + 12 < stabs + stabsize)
{
char *p;
stab += 12;
p = s + strlen (s) - 1;
*p = '\0';
s = concat (s,
((char *) strings
+ stroff
+ bfd_get_32 (abfd, stab)),
(const char *) NULL);
/* We have to restore the backslash, because, if
the linker is hashing stabs strings, we may
see the same string more than once. */
*p = '\\';
if (f != NULL)
free (f);
f = s;
}
save_stab (type, desc, value, s);
if (! parse_stab (dhandle, shandle, type, desc, value, s))
{
stab_context ();
free_saved_stabs ();
return FALSE;
}
/* Don't free f, since I think the stabs code
expects strings to hang around. This should be
straightened out. FIXME. */
}
}
free_saved_stabs ();
free (stabs);
/* Don't free strings, since I think the stabs code expects
the strings to hang around. This should be straightened
out. FIXME. */
}
}
if (shandle != NULL)
{
if (! finish_stab (dhandle, shandle))
return FALSE;
}
return TRUE;
}
