+/* seclet.c
+ Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+ Written by Cygnus Support.
+
+This file is part of BFD, the Binary File Descriptor library.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
/* This module is part of BFD */
#include "libbfd.h"
#include "seclet.h"
#include "coff/internal.h"
+
+/* Create a new seclet and attach it to a section. */
+
bfd_seclet_type *
DEFUN(bfd_new_seclet,(abfd, section),
bfd *abfd AND
section->seclets_tail = n;
return n;
-
}
+/* Given an indirect seclet which points to an input section, relocate
+ the contents of the seclet and put the data in its final
+ destination. */
-
-
-#define MAX_ERRORS_IN_A_ROW 10
-extern bfd_error_vector_type bfd_error_vector;
-bfd_vma
-DEFUN(get_value,(reloc, seclet),
- arelent *reloc AND
- bfd_seclet_type *seclet)
+static boolean
+DEFUN(rel,(abfd, seclet, output_section, data, relocateable),
+ bfd *abfd AND
+ bfd_seclet_type *seclet AND
+ asection *output_section AND
+ PTR data AND
+ boolean relocateable)
{
- bfd_vma value;
- if (reloc->sym_ptr_ptr)
+ if ((output_section->flags & SEC_HAS_CONTENTS) != 0
+ && seclet->size)
{
- asymbol *symbol = *(reloc->sym_ptr_ptr);
-
-
- /* A symbol holds a pointer to a section, and an offset from the
- base of the section. To relocate, we find where the section will
- live in the output and add that in */
-
- if (symbol->section == (asection *)NULL)
+ data = (PTR) bfd_get_relocated_section_contents(abfd, seclet, data,
+ relocateable);
+ if(bfd_set_section_contents(abfd,
+ output_section,
+ data,
+ seclet->offset,
+ seclet->size) == false)
{
- /* Ouch, this is an undefined symbol.. */
- bfd_error_vector.undefined_symbol(reloc, seclet);
- value = symbol->value;
+ abort();
}
- else
- {
- value = symbol->value +
- symbol->section->output_offset +
- symbol->section->output_section->vma;
- }
}
-
- else
- {
- value = 0;
- }
-
- /* Add the value contained in the relocation */
- value += (short)((reloc->addend) & 0xffff);
-
- return value;
-
-
+ return true;
}
-static char *
-DEFUN(foo_bfd_get_relocated_section_contents,(seclet),
- bfd_seclet_type *seclet)
+/* Put the contents of a seclet in its final destination. */
+static boolean
+DEFUN(seclet_dump_seclet,(abfd, seclet, section, data, relocateable),
+ bfd *abfd AND
+ bfd_seclet_type *seclet AND
+ asection *section AND
+ PTR data AND
+ boolean relocateable)
{
- asymbol **symbols = 0;
- extern bfd *output_bfd;
- bfd *abfd;
-
- /* Get enough memory to hold the stuff */
- bfd *input_bfd = seclet->u.indirect.section->owner;
- asection *input_section = seclet->u.indirect.section;
-
- char *data = malloc(input_section->_raw_size);
- char *dst = data;
- char *prev_dst = data;
- unsigned int gap = 0;
-
- bfd_size_type reloc_size = bfd_get_reloc_upper_bound(input_bfd,
- input_section);
- arelent **reloc_vector = (arelent **)ldmalloc(reloc_size);
- abfd = output_bfd;
-
- /* read in the section */
- bfd_get_section_contents(input_bfd,
- input_section,
- data,
- 0,
- input_section->_raw_size);
-
-
- if (bfd_canonicalize_reloc(input_bfd,
- input_section,
- reloc_vector,
- seclet->u.indirect.symbols) )
- {
- arelent **parent = reloc_vector;
- arelent *reloc ;
-
-
-
- unsigned int dst_address = 0;
- unsigned int src_address = 0;
- unsigned int run;
- unsigned int idx;
-
- /* Find how long a run we can do */
- while (dst_address < seclet->size)
+ switch (seclet->type)
{
-
- reloc = *parent;
- if (reloc)
- {
- /* Note that the relaxing didn't tie up the addresses in the
- relocation, so we use the original address to work out the
- run of non-relocated data */
- run = reloc->address - src_address;
- parent++;
-
- }
- else
- {
- run = seclet->size - dst_address;
- }
- /* Copy the bytes */
- for (idx = 0; idx < run; idx++)
- {
- data[dst_address++] = data[src_address++];
- }
-
- /* Now do the relocation */
-
- if (reloc)
- {
- switch (reloc->howto->type)
- {
- case R_JMP2:
- /* Speciial relaxed type */
- {
- bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
- int gap = get_value(reloc,seclet)-dot-1;
- if ((gap & ~0xff ) != 0 &&((gap & 0xff00)!= 0xff00)) abort();
-
- bfd_put_8(abfd,gap, data+dst_address);
-
- switch (data[dst_address-1])
- {
-
- case 0x5e:
- /* jsr -> bsr */
- bfd_put_8(abfd, 0x55, data+dst_address-1);
- break;
- case 0x5a:
- /* jmp ->bra */
- bfd_put_8(abfd, 0x40, data+dst_address-1);
- break;
-
- default:
- abort();
-
- }
-
-
+ case bfd_indirect_seclet:
+ /* The contents of this section come from another one somewhere
+ else */
+ return rel(abfd, seclet, section, data, relocateable);
-
- dst_address++;
- src_address+=3;
-
- break;
+ case bfd_fill_seclet:
+ /* Fill in the section with us */
+ {
+ char *d = bfd_xmalloc(seclet->size);
+ unsigned int i;
+ for (i =0; i < seclet->size; i+=2) {
+ d[i] = seclet->u.fill.value >> 8;
}
-
-
- case R_MOVB2:
- /* Special relaxed type, there will be a gap between where we
- get stuff from and where we put stuff to now
-
- for a mov.b @aa:16 -> mov.b @aa:8
- opcode 0x6a 0x0y offset
- -> 0x2y off
- */
- if (data[dst_address-1] != 0x6a)
- abort();
- switch (data[dst_address] & 0xf0)
- {
- case 0x00:
- /* Src is memory */
- data[dst_address-1] = (data[src_address] & 0xf) | 0x20;
- break;
- case 0x80:
- /* Src is reg */
- data[dst_address-1] = (data[src_address] & 0xf) | 0x30;
- break;
- default:
- abort();
- }
-
- /* the offset must fit ! after all, what was all the relaxing
- about ? */
-
- bfd_put_8(abfd, get_value(reloc, seclet), data + dst_address);
-
- /* Note the magic - src goes up by two bytes, but dst by only
- one */
- dst_address+=1;
- src_address+=3;
-
- break;
- /* PCrel 8 bits */
- case R_PCRBYTE:
- {
- bfd_vma dot = seclet->offset + dst_address + seclet->u.indirect.section->output_section->vma;
- int gap = get_value(reloc,seclet)-dot;
- if (gap > 127 || gap < -128)
- {
- bfd_error_vector.reloc_value_truncated(reloc, seclet);
- }
-
- bfd_put_8(abfd,gap, data+dst_address);
- dst_address++;
- src_address++;
-
- break;
+ for (i = 1; i < seclet->size; i+=2) {
+ d[i] = seclet->u.fill.value ;
}
-
- case R_RELBYTE:
- {
- unsigned int gap =get_value(reloc,seclet);
- if (gap > 256)
+ /* Don't bother to fill in empty sections */
+ if (!(bfd_get_section_flags(abfd, section) & SEC_HAS_CONTENTS))
{
- bfd_error_vector.reloc_value_truncated(reloc, seclet);
+ return true;
}
-
- bfd_put_8(abfd, gap, data+dst_address);
- dst_address+=1;
- src_address+=1;
-
+ return bfd_set_section_contents(abfd, section, d, seclet->offset,
+ seclet->size);
+ }
- }
- break;
- case R_JMP1:
- /* A relword which would have like to have been a pcrel */
- case R_MOVB1:
- /* A relword which would like to have been modified but
- didn't make it */
- case R_RELWORD:
- bfd_put_16(abfd, get_value(reloc,seclet), data+dst_address);
- dst_address+=2;
- src_address+=2;
- break;
-
- default:
- abort();
- }
- }
+ default:
+ abort();
}
- }
- free((char *)reloc_vector);
- return data;
-
-}
-
-void
-DEFUN(rel,(abfd, seclet, output_section),
- bfd *abfd AND
- bfd_seclet_type *seclet AND
- asection *output_section)
-{
- bfd_byte *data;
- if (output_section->flags & SEC_HAS_CONTENTS )
- {
-
- data = bfd_get_relocated_section_contents(abfd, seclet);
- if(bfd_set_section_contents(abfd,
- output_section,
- data,
- seclet->offset,
- seclet->size) == false)
- {
- abort();
- }
-
+ return true;
}
-
+/*
+INTERNAL_FUNCTION
+ bfd_generic_seclet_link
-
+SYNOPSIS
+ boolean bfd_generic_seclet_link
+ (bfd *abfd,
+ PTR data,
+ boolean relocateable);
-}
-
-void
-DEFUN(seclet_dump_seclet,(abfd, seclet, section),
- bfd *abfd AND
- bfd_seclet_type *seclet AND
- asection *section)
-{
- switch (seclet->type)
- {
-
- case bfd_indirect_seclet:
- /* The contents of this section come from another one somewhere
- else */
- rel(abfd, seclet, section);
-
-
- break;
-
- default:
- abort();
- }
-
+DESCRIPTION
+ The generic seclet linking routine. The caller should have
+ set up seclets for all the output sections. The DATA argument
+ should point to a memory area large enough to hold the largest
+ section. This function looks through the seclets and moves
+ the contents into the output sections. If RELOCATEABLE is
+ true, the orelocation fields of the output sections must
+ already be initialized.
-}
+*/
-void
-DEFUN(seclet_dump,(abfd),
- bfd *abfd)
+boolean
+DEFUN(bfd_generic_seclet_link,(abfd, data, relocateable),
+ bfd *abfd AND
+ PTR data AND
+ boolean relocateable)
{
- /* Write all the seclets on the bfd out, relocate etc according to the
- rules */
-
asection *o = abfd->sections;
while (o != (asection *)NULL)
{
bfd_seclet_type *p = o->seclets_head;
while (p != (bfd_seclet_type *)NULL)
{
- seclet_dump_seclet(abfd, p, o);
+ if (seclet_dump_seclet(abfd, p, o, data, relocateable) == false)
+ return false;
p = p ->next;
}
-
o = o->next;
}
+ return true;
}
projects / deliverable / binutils-gdb.git / blobdiff