summaryrefslogtreecommitdiff
path: root/bfd/coff-a29k.c
diff options
context:
space:
mode:
Diffstat (limited to 'bfd/coff-a29k.c')
-rw-r--r--bfd/coff-a29k.c603
1 files changed, 0 insertions, 603 deletions
diff --git a/bfd/coff-a29k.c b/bfd/coff-a29k.c
deleted file mode 100644
index b7b018cad28..00000000000
--- a/bfd/coff-a29k.c
+++ /dev/null
@@ -1,603 +0,0 @@
-/* BFD back-end for AMD 29000 COFF binaries.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001
- Free Software Foundation, Inc.
- Contributed by David Wood at New York University 7/8/91.
-
-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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#define A29K 1
-
-#include "bfd.h"
-#include "sysdep.h"
-#include "libbfd.h"
-#include "coff/a29k.h"
-#include "coff/internal.h"
-#include "libcoff.h"
-
-static long get_symbol_value PARAMS ((asymbol *));
-static bfd_reloc_status_type a29k_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static boolean coff_a29k_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
- struct internal_reloc *, struct internal_syment *, asection **));
-static boolean coff_a29k_adjust_symndx
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
- struct internal_reloc *, boolean *));
-
-#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
-
-#define INSERT_HWORD(WORD,HWORD) \
- (((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff))
-#define EXTRACT_HWORD(WORD) \
- ((((WORD) & 0x00ff0000) >> 8) | ((WORD) & 0xff))
-#define SIGN_EXTEND_HWORD(HWORD) \
- (((HWORD) ^ 0x8000) - 0x8000)
-
-/* Provided the symbol, returns the value reffed */
-static long
-get_symbol_value (symbol)
- asymbol *symbol;
-{
- long relocation = 0;
-
- if (bfd_is_com_section (symbol->section))
- {
- relocation = 0;
- }
- else
- {
- relocation = symbol->value +
- symbol->section->output_section->vma +
- symbol->section->output_offset;
- }
-
- return(relocation);
-}
-
-/* this function is in charge of performing all the 29k relocations */
-
-static bfd_reloc_status_type
-a29k_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol_in;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
-{
- /* the consth relocation comes in two parts, we have to remember
- the state between calls, in these variables */
- static boolean part1_consth_active = false;
- static unsigned long part1_consth_value;
-
- unsigned long insn;
- unsigned long sym_value;
- unsigned long unsigned_value;
- unsigned short r_type;
- long signed_value;
-
- unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
- bfd_byte *hit_data =addr + (bfd_byte *) (data);
-
- r_type = reloc_entry->howto->type;
-
- if (output_bfd)
- {
- /* Partial linking - do nothing */
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
-
- }
-
- if (symbol_in != NULL
- && bfd_is_und_section (symbol_in->section))
- {
- /* Keep the state machine happy in case we're called again */
- if (r_type == R_IHIHALF)
- {
- part1_consth_active = true;
- part1_consth_value = 0;
- }
- return(bfd_reloc_undefined);
- }
-
- if ((part1_consth_active) && (r_type != R_IHCONST))
- {
- part1_consth_active = false;
- *error_message = (char *) _("Missing IHCONST");
- return(bfd_reloc_dangerous);
- }
-
- sym_value = get_symbol_value(symbol_in);
-
- switch (r_type)
- {
- case R_IREL:
- insn = bfd_get_32 (abfd, hit_data);
- /* Take the value in the field and sign extend it */
- signed_value = EXTRACT_HWORD(insn);
- signed_value = SIGN_EXTEND_HWORD(signed_value);
- signed_value <<= 2;
-
- /* See the note on the R_IREL reloc in coff_a29k_relocate_section. */
- if (signed_value == - (long) reloc_entry->address)
- signed_value = 0;
-
- signed_value += sym_value + reloc_entry->addend;
- if ((signed_value & ~0x3ffff) == 0)
- { /* Absolute jmp/call */
- insn |= (1<<24); /* Make it absolute */
- /* FIXME: Should we change r_type to R_IABS */
- }
- else
- {
- /* Relative jmp/call, so subtract from the value the
- address of the place we're coming from */
- signed_value -= (reloc_entry->address
- + input_section->output_section->vma
- + input_section->output_offset);
- if (signed_value>0x1ffff || signed_value<-0x20000)
- return(bfd_reloc_overflow);
- }
- signed_value >>= 2;
- insn = INSERT_HWORD(insn, signed_value);
- bfd_put_32 (abfd, insn ,hit_data);
- break;
- case R_ILOHALF:
- insn = bfd_get_32 (abfd, hit_data);
- unsigned_value = EXTRACT_HWORD(insn);
- unsigned_value += sym_value + reloc_entry->addend;
- insn = INSERT_HWORD(insn, unsigned_value);
- bfd_put_32 (abfd, insn, hit_data);
- break;
- case R_IHIHALF:
- insn = bfd_get_32 (abfd, hit_data);
- /* consth, part 1
- Just get the symbol value that is referenced */
- part1_consth_active = true;
- part1_consth_value = sym_value + reloc_entry->addend;
- /* Don't modify insn until R_IHCONST */
- break;
- case R_IHCONST:
- insn = bfd_get_32 (abfd, hit_data);
- /* consth, part 2
- Now relocate the reference */
- if (part1_consth_active == false)
- {
- *error_message = (char *) _("Missing IHIHALF");
- return(bfd_reloc_dangerous);
- }
- /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
- unsigned_value = 0; /*EXTRACT_HWORD(insn) << 16;*/
- unsigned_value += reloc_entry->addend; /* r_symndx */
- unsigned_value += part1_consth_value;
- unsigned_value = unsigned_value >> 16;
- insn = INSERT_HWORD(insn, unsigned_value);
- part1_consth_active = false;
- bfd_put_32 (abfd, insn, hit_data);
- break;
- case R_BYTE:
- insn = bfd_get_8 (abfd, hit_data);
- unsigned_value = insn + sym_value + reloc_entry->addend;
- if (unsigned_value & 0xffffff00)
- return(bfd_reloc_overflow);
- bfd_put_8 (abfd, unsigned_value, hit_data);
- break;
- case R_HWORD:
- insn = bfd_get_16 (abfd, hit_data);
- unsigned_value = insn + sym_value + reloc_entry->addend;
- if (unsigned_value & 0xffff0000)
- return(bfd_reloc_overflow);
- bfd_put_16 (abfd, insn, hit_data);
- break;
- case R_WORD:
- insn = bfd_get_32 (abfd, hit_data);
- insn += sym_value + reloc_entry->addend;
- bfd_put_32 (abfd, insn, hit_data);
- break;
- default:
- *error_message = _("Unrecognized reloc");
- return (bfd_reloc_dangerous);
- }
-
- return(bfd_reloc_ok);
-}
-
-/* type rightshift
- size
- bitsize
- pc-relative
- bitpos
- absolute
- complain_on_overflow
- special_function
- relocation name
- partial_inplace
- src_mask
-*/
-
-/*FIXME: I'm not real sure about this table */
-static reloc_howto_type howto_table[] =
-{
- {R_ABS, 0, 3, 32, false, 0, complain_overflow_bitfield,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false},
- EMPTY_HOWTO (1),
- EMPTY_HOWTO (2),
- EMPTY_HOWTO (3),
- EMPTY_HOWTO (4),
- EMPTY_HOWTO (5),
- EMPTY_HOWTO (6),
- EMPTY_HOWTO (7),
- EMPTY_HOWTO (8),
- EMPTY_HOWTO (9),
- EMPTY_HOWTO (10),
- EMPTY_HOWTO (11),
- EMPTY_HOWTO (12),
- EMPTY_HOWTO (13),
- EMPTY_HOWTO (14),
- EMPTY_HOWTO (15),
- EMPTY_HOWTO (16),
- EMPTY_HOWTO (17),
- EMPTY_HOWTO (18),
- EMPTY_HOWTO (19),
- EMPTY_HOWTO (20),
- EMPTY_HOWTO (21),
- EMPTY_HOWTO (22),
- EMPTY_HOWTO (23),
- {R_IREL, 0, 3, 32, true, 0, complain_overflow_signed,a29k_reloc,"IREL", true, 0xffffffff,0xffffffff, false},
- {R_IABS, 0, 3, 32, false, 0, complain_overflow_bitfield, a29k_reloc,"IABS", true, 0xffffffff,0xffffffff, false},
- {R_ILOHALF, 0, 3, 16, true, 0, complain_overflow_signed, a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false},
- {R_IHIHALF, 0, 3, 16, true, 16, complain_overflow_signed, a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false},
- {R_IHCONST, 0, 3, 16, true, 0, complain_overflow_signed, a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false},
- {R_BYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, a29k_reloc,"BYTE", true, 0x000000ff,0x000000ff, false},
- {R_HWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, a29k_reloc,"HWORD", true, 0x0000ffff,0x0000ffff, false},
- {R_WORD, 0, 2, 32, false, 0, complain_overflow_bitfield, a29k_reloc,"WORD", true, 0xffffffff,0xffffffff, false},
-};
-
-#define BADMAG(x) A29KBADMAG(x)
-
-#define RELOC_PROCESSING(relent, reloc, symbols, abfd, section) \
- reloc_processing(relent, reloc, symbols, abfd, section)
-
-static void
-reloc_processing (relent,reloc, symbols, abfd, section)
- arelent *relent;
- struct internal_reloc *reloc;
- asymbol **symbols;
- bfd *abfd;
- asection *section;
-{
- static bfd_vma ihihalf_vaddr = (bfd_vma) -1;
-
- relent->address = reloc->r_vaddr;
- relent->howto = howto_table + reloc->r_type;
- if (reloc->r_type == R_IHCONST)
- {
- /* The address of an R_IHCONST should always be the address of
- the immediately preceding R_IHIHALF. relocs generated by gas
- are correct, but relocs generated by High C are different (I
- can't figure out what the address means for High C). We can
- handle both gas and High C by ignoring the address here, and
- simply reusing the address saved for R_IHIHALF. */
- if (ihihalf_vaddr == (bfd_vma) -1)
- abort ();
- relent->address = ihihalf_vaddr;
- ihihalf_vaddr = (bfd_vma) -1;
- relent->addend = reloc->r_symndx;
- relent->sym_ptr_ptr= bfd_abs_section_ptr->symbol_ptr_ptr;
- }
- else
- {
- asymbol *ptr;
- relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx];
-
- ptr = *(relent->sym_ptr_ptr);
-
- if (ptr
- && bfd_asymbol_bfd(ptr) == abfd
-
- && ((ptr->flags & BSF_OLD_COMMON)== 0))
- {
- relent->addend = 0;
- }
- else
- {
- relent->addend = 0;
- }
- relent->address-= section->vma;
- if (reloc->r_type == R_IHIHALF)
- ihihalf_vaddr = relent->address;
- else if (ihihalf_vaddr != (bfd_vma) -1)
- abort ();
- }
-}
-
-/* The reloc processing routine for the optimized COFF linker. */
-
-static boolean
-coff_a29k_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, syms, sections)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- struct internal_reloc *relocs;
- struct internal_syment *syms;
- asection **sections;
-{
- struct internal_reloc *rel;
- struct internal_reloc *relend;
- boolean hihalf;
- bfd_vma hihalf_val;
-
- /* If we are performing a relocateable link, we don't need to do a
- thing. The caller will take care of adjusting the reloc
- addresses and symbol indices. */
- if (info->relocateable)
- return true;
-
- hihalf = false;
- hihalf_val = 0;
-
- rel = relocs;
- relend = rel + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- long symndx;
- bfd_byte *loc;
- struct coff_link_hash_entry *h;
- struct internal_syment *sym;
- asection *sec;
- bfd_vma val;
- boolean overflow;
- unsigned long insn;
- long signed_value;
- unsigned long unsigned_value;
- bfd_reloc_status_type rstat;
-
- symndx = rel->r_symndx;
- loc = contents + rel->r_vaddr - input_section->vma;
-
- if (symndx == -1 || rel->r_type == R_IHCONST)
- h = NULL;
- else
- h = obj_coff_sym_hashes (input_bfd)[symndx];
-
- sym = NULL;
- sec = NULL;
- val = 0;
-
- /* An R_IHCONST reloc does not have a symbol. Instead, the
- symbol index is an addend. R_IHCONST is always used in
- conjunction with R_IHHALF. */
- if (rel->r_type != R_IHCONST)
- {
- if (h == NULL)
- {
- if (symndx == -1)
- sec = bfd_abs_section_ptr;
- else
- {
- sym = syms + symndx;
- sec = sections[symndx];
- val = (sec->output_section->vma
- + sec->output_offset
- + sym->n_value
- - sec->vma);
- }
- }
- else
- {
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- sec = h->root.u.def.section;
- val = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd, input_section,
- rel->r_vaddr - input_section->vma, true)))
- return false;
- }
- }
-
- if (hihalf)
- {
- if (! ((*info->callbacks->reloc_dangerous)
- (info, _("missing IHCONST reloc"), input_bfd,
- input_section, rel->r_vaddr - input_section->vma)))
- return false;
- hihalf = false;
- }
- }
-
- overflow = false;
-
- switch (rel->r_type)
- {
- default:
- bfd_set_error (bfd_error_bad_value);
- return false;
-
- case R_IREL:
- insn = bfd_get_32 (input_bfd, loc);
-
- /* Extract the addend. */
- signed_value = EXTRACT_HWORD (insn);
- signed_value = SIGN_EXTEND_HWORD (signed_value);
- signed_value <<= 2;
-
- /* Unfortunately, there are two different versions of COFF
- a29k. In the original AMD version, the value stored in
- the field for the R_IREL reloc is a simple addend. In
- the GNU version, the value is the negative of the address
- of the reloc within section. We try to cope here by
- assuming the AMD version, unless the addend is exactly
- the negative of the address; in the latter case we assume
- the GNU version. This means that something like
- .text
- nop
- jmp i-4
- will fail, because the addend of -4 will happen to equal
- the negative of the address within the section. The
- compiler will never generate code like this.
-
- At some point in the future we may want to take out this
- check. */
-
- if (signed_value == - (long) (rel->r_vaddr - input_section->vma))
- signed_value = 0;
-
- /* Determine the destination of the jump. */
- signed_value += val;
-
- if ((signed_value & ~0x3ffff) == 0)
- {
- /* We can use an absolute jump. */
- insn |= (1 << 24);
- }
- else
- {
- /* Make the destination PC relative. */
- signed_value -= (input_section->output_section->vma
- + input_section->output_offset
- + (rel->r_vaddr - input_section->vma));
- if (signed_value > 0x1ffff || signed_value < - 0x20000)
- {
- overflow = true;
- signed_value = 0;
- }
- }
-
- /* Put the adjusted value back into the instruction. */
- signed_value >>= 2;
- insn = INSERT_HWORD (insn, signed_value);
-
- bfd_put_32 (input_bfd, (bfd_vma) insn, loc);
-
- break;
-
- case R_ILOHALF:
- insn = bfd_get_32 (input_bfd, loc);
- unsigned_value = EXTRACT_HWORD (insn);
- unsigned_value += val;
- insn = INSERT_HWORD (insn, unsigned_value);
- bfd_put_32 (input_bfd, insn, loc);
- break;
-
- case R_IHIHALF:
- /* Save the value for the R_IHCONST reloc. */
- hihalf = true;
- hihalf_val = val;
- break;
-
- case R_IHCONST:
- if (! hihalf)
- {
- if (! ((*info->callbacks->reloc_dangerous)
- (info, _("missing IHIHALF reloc"), input_bfd,
- input_section, rel->r_vaddr - input_section->vma)))
- return false;
- hihalf_val = 0;
- }
-
- insn = bfd_get_32 (input_bfd, loc);
- unsigned_value = rel->r_symndx + hihalf_val;
- unsigned_value >>= 16;
- insn = INSERT_HWORD (insn, unsigned_value);
- bfd_put_32 (input_bfd, (bfd_vma) insn, loc);
-
- hihalf = false;
-
- break;
-
- case R_BYTE:
- case R_HWORD:
- case R_WORD:
- rstat = _bfd_relocate_contents (howto_table + rel->r_type,
- input_bfd, val, loc);
- if (rstat == bfd_reloc_overflow)
- overflow = true;
- else if (rstat != bfd_reloc_ok)
- abort ();
- break;
- }
-
- if (overflow)
- {
- const char *name;
- char buf[SYMNMLEN + 1];
-
- if (symndx == -1)
- name = "*ABS*";
- else if (h != NULL)
- name = h->root.root.string;
- else if (sym == NULL)
- name = "*unknown*";
- else if (sym->_n._n_n._n_zeroes == 0
- && sym->_n._n_n._n_offset != 0)
- name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
- else
- {
- strncpy (buf, sym->_n._n_name, SYMNMLEN);
- buf[SYMNMLEN] = '\0';
- name = buf;
- }
-
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto_table[rel->r_type].name, (bfd_vma) 0,
- input_bfd, input_section,
- rel->r_vaddr - input_section->vma)))
- return false;
- }
- }
-
- return true;
-}
-
-#define coff_relocate_section coff_a29k_relocate_section
-
-/* We don't want to change the symndx of a R_IHCONST reloc, since it
- is actually an addend, not a symbol index at all. */
-
-static boolean
-coff_a29k_adjust_symndx (obfd, info, ibfd, sec, irel, adjustedp)
- bfd *obfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- bfd *ibfd ATTRIBUTE_UNUSED;
- asection *sec ATTRIBUTE_UNUSED;
- struct internal_reloc *irel;
- boolean *adjustedp;
-{
- if (irel->r_type == R_IHCONST)
- *adjustedp = true;
- else
- *adjustedp = false;
- return true;
-}
-
-#define coff_adjust_symndx coff_a29k_adjust_symndx
-
-#include "coffcode.h"
-
-CREATE_BIG_COFF_TARGET_VEC (a29kcoff_big_vec, "coff-a29k-big", 0, SEC_READONLY, '_', NULL)
View Lorry Controller Status