diff options
Diffstat (limited to 'bfd/coff-h8300.c')
| -rw-r--r-- | bfd/coff-h8300.c | 1388 |
1 files changed, 0 insertions, 1388 deletions
diff --git a/bfd/coff-h8300.c b/bfd/coff-h8300.c deleted file mode 100644 index 74a4ec3962a..00000000000 --- a/bfd/coff-h8300.c +++ /dev/null @@ -1,1388 +0,0 @@ -/* BFD back-end for Hitachi H8/300 COFF binaries. - Copyright 1990, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. - Written by Steve Chamberlain, <sac@cygnus.com>. - -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. */ - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" -#include "bfdlink.h" -#include "genlink.h" -#include "coff/h8300.h" -#include "coff/internal.h" -#include "libcoff.h" - -#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) - -/* We derive a hash table from the basic BFD hash table to - hold entries in the function vector. Aside from the - info stored by the basic hash table, we need the offset - of a particular entry within the hash table as well as - the offset where we'll add the next entry. */ - -struct funcvec_hash_entry -{ - /* The basic hash table entry. */ - struct bfd_hash_entry root; - - /* The offset within the vectors section where - this entry lives. */ - bfd_vma offset; -}; - -struct funcvec_hash_table -{ - /* The basic hash table. */ - struct bfd_hash_table root; - - bfd *abfd; - - /* Offset at which we'll add the next entry. */ - unsigned int offset; -}; - -static struct bfd_hash_entry * -funcvec_hash_newfunc - PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); - -static boolean -funcvec_hash_table_init - PARAMS ((struct funcvec_hash_table *, bfd *, - struct bfd_hash_entry *(*) PARAMS ((struct bfd_hash_entry *, - struct bfd_hash_table *, - const char *)))); - -/* To lookup a value in the function vector hash table. */ -#define funcvec_hash_lookup(table, string, create, copy) \ - ((struct funcvec_hash_entry *) \ - bfd_hash_lookup (&(table)->root, (string), (create), (copy))) - -/* The derived h8300 COFF linker table. Note it's derived from - the generic linker hash table, not the COFF backend linker hash - table! We use this to attach additional data structures we - need while linking on the h8300. */ -struct h8300_coff_link_hash_table -{ - /* The main hash table. */ - struct generic_link_hash_table root; - - /* Section for the vectors table. This gets attached to a - random input bfd, we keep it here for easy access. */ - asection *vectors_sec; - - /* Hash table of the functions we need to enter into the function - vector. */ - struct funcvec_hash_table *funcvec_hash_table; -}; - -static struct bfd_link_hash_table *h8300_coff_link_hash_table_create - PARAMS ((bfd *)); - -/* Get the H8/300 COFF linker hash table from a link_info structure. */ - -#define h8300_coff_hash_table(p) \ - ((struct h8300_coff_link_hash_table *) ((coff_hash_table (p)))) - -/* Initialize fields within a funcvec hash table entry. Called whenever - a new entry is added to the funcvec hash table. */ - -static struct bfd_hash_entry * -funcvec_hash_newfunc (entry, gen_table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *gen_table; - const char *string; -{ - struct funcvec_hash_entry *ret; - struct funcvec_hash_table *table; - - ret = (struct funcvec_hash_entry *) entry; - table = (struct funcvec_hash_table *) gen_table; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == NULL) - ret = ((struct funcvec_hash_entry *) - bfd_hash_allocate (gen_table, - sizeof (struct funcvec_hash_entry))); - if (ret == NULL) - return NULL; - - /* Call the allocation method of the superclass. */ - ret = ((struct funcvec_hash_entry *) - bfd_hash_newfunc ((struct bfd_hash_entry *) ret, gen_table, string)); - - if (ret == NULL) - return NULL; - - /* Note where this entry will reside in the function vector table. */ - ret->offset = table->offset; - - /* Bump the offset at which we store entries in the function - vector. We'd like to bump up the size of the vectors section, - but it's not easily available here. */ - if (bfd_get_mach (table->abfd) == bfd_mach_h8300) - table->offset += 2; - else if (bfd_get_mach (table->abfd) == bfd_mach_h8300h - || bfd_get_mach (table->abfd) == bfd_mach_h8300s) - table->offset += 4; - else - return NULL; - - /* Everything went OK. */ - return (struct bfd_hash_entry *) ret; -} - -/* Initialize the function vector hash table. */ - -static boolean -funcvec_hash_table_init (table, abfd, newfunc) - struct funcvec_hash_table *table; - bfd *abfd; - struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, - struct bfd_hash_table *, - const char *)); -{ - /* Initialize our local fields, then call the generic initialization - routine. */ - table->offset = 0; - table->abfd = abfd; - return (bfd_hash_table_init (&table->root, newfunc)); -} - -/* Create the derived linker hash table. We use a derived hash table - basically to hold "static" information during an h8/300 coff link - without using static variables. */ - -static struct bfd_link_hash_table * -h8300_coff_link_hash_table_create (abfd) - bfd *abfd; -{ - struct h8300_coff_link_hash_table *ret; - ret = ((struct h8300_coff_link_hash_table *) - bfd_alloc (abfd, sizeof (struct h8300_coff_link_hash_table))); - if (ret == NULL) - return NULL; - if (!_bfd_link_hash_table_init (&ret->root.root, abfd, _bfd_generic_link_hash_newfunc)) - { - bfd_release (abfd, ret); - return NULL; - } - - /* Initialize our data. */ - ret->vectors_sec = NULL; - ret->funcvec_hash_table = NULL; - - /* OK. Everything's intialized, return the base pointer. */ - return &ret->root.root; -} - -/* special handling for H8/300 relocs. - We only come here for pcrel stuff and return normally if not an -r link. - When doing -r, we can't do any arithmetic for the pcrel stuff, because - the code in reloc.c assumes that we can manipulate the targets of - the pcrel branches. This isn't so, since the H8/300 can do relaxing, - which means that the gap after the instruction may not be enough to - contain the offset required for the branch, so we have to use the only - the addend until the final link */ - -static bfd_reloc_status_type -special (abfd, reloc_entry, symbol, data, input_section, output_bfd, - error_message) - bfd *abfd; - arelent *reloc_entry; - asymbol *symbol; - PTR data; - asection *input_section; - bfd *output_bfd; - char **error_message; -{ - if (output_bfd == (bfd *) NULL) - return bfd_reloc_continue; - - return bfd_reloc_ok; -} - -static reloc_howto_type howto_table[] = -{ - HOWTO (R_RELBYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, special, "8", false, 0x000000ff, 0x000000ff, false), - HOWTO (R_RELWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, special, "16", false, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_RELLONG, 0, 2, 32, false, 0, complain_overflow_bitfield, special, "32", false, 0xffffffff, 0xffffffff, false), - HOWTO (R_PCRBYTE, 0, 0, 8, true, 0, complain_overflow_signed, special, "DISP8", false, 0x000000ff, 0x000000ff, true), - HOWTO (R_PCRWORD, 0, 1, 16, true, 0, complain_overflow_signed, special, "DISP16", false, 0x0000ffff, 0x0000ffff, true), - HOWTO (R_PCRLONG, 0, 2, 32, true, 0, complain_overflow_signed, special, "DISP32", false, 0xffffffff, 0xffffffff, true), - HOWTO (R_MOV16B1, 0, 1, 16, false, 0, complain_overflow_bitfield, special, "relaxable mov.b:16", false, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_MOV16B2, 0, 1, 8, false, 0, complain_overflow_bitfield, special, "relaxed mov.b:16", false, 0x000000ff, 0x000000ff, false), - HOWTO (R_JMP1, 0, 1, 16, false, 0, complain_overflow_bitfield, special, "16/pcrel", false, 0x0000ffff, 0x0000ffff, false), - HOWTO (R_JMP2, 0, 0, 8, false, 0, complain_overflow_bitfield, special, "pcrecl/16", false, 0x000000ff, 0x000000ff, false), - HOWTO (R_JMPL1, 0, 2, 32, false, 0, complain_overflow_bitfield, special, "24/pcrell", false, 0x00ffffff, 0x00ffffff, false), - HOWTO (R_JMPL2, 0, 0, 8, false, 0, complain_overflow_bitfield, special, "pc8/24", false, 0x000000ff, 0x000000ff, false), - HOWTO (R_MOV24B1, 0, 1, 32, false, 0, complain_overflow_bitfield, special, "relaxable mov.b:24", false, 0xffffffff, 0xffffffff, false), - HOWTO (R_MOV24B2, 0, 1, 8, false, 0, complain_overflow_bitfield, special, "relaxed mov.b:24", false, 0x0000ffff, 0x0000ffff, false), - - /* An indirect reference to a function. This causes the function's address - to be added to the function vector in lo-mem and puts the address of - the function vector's entry in the jsr instruction. */ - HOWTO (R_MEM_INDIRECT, 0, 0, 8, false, 0, complain_overflow_bitfield, special, "8/indirect", false, 0x000000ff, 0x000000ff, false), - - /* Internal reloc for relaxing. This is created when a 16bit pc-relative - branch is turned into an 8bit pc-relative branch. */ - HOWTO (R_PCRWORD_B, 0, 0, 8, true, 0, complain_overflow_bitfield, special, "relaxed bCC:16", false, 0x000000ff, 0x000000ff, false), - - HOWTO (R_MOVL1, 0, 2, 32, false, 0, complain_overflow_bitfield,special, "32/24 relaxable move", false, 0xffffffff, 0xffffffff, false), - - HOWTO (R_MOVL2, 0, 1, 16, false, 0, complain_overflow_bitfield, special, "32/24 relaxed move", false, 0x0000ffff, 0x0000ffff, false), - - HOWTO (R_BCC_INV, 0, 0, 8, true, 0, complain_overflow_signed, special, "DISP8 inverted", false, 0x000000ff, 0x000000ff, true), - - HOWTO (R_JMP_DEL, 0, 0, 8, true, 0, complain_overflow_signed, special, "Deleted jump", false, 0x000000ff, 0x000000ff, true), -}; - - -/* Turn a howto into a reloc number */ - -#define SELECT_RELOC(x,howto) \ - { x.r_type = select_reloc(howto); } - -#define BADMAG(x) (H8300BADMAG(x) && H8300HBADMAG(x) && H8300SBADMAG(x)) -#define H8300 1 /* Customize coffcode.h */ -#define __A_MAGIC_SET__ - - - -/* Code to swap in the reloc */ -#define SWAP_IN_RELOC_OFFSET bfd_h_get_32 -#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32 -#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ - dst->r_stuff[0] = 'S'; \ - dst->r_stuff[1] = 'C'; - - -static int -select_reloc (howto) - reloc_howto_type *howto; -{ - return howto->type; -} - -/* Code to turn a r_type into a howto ptr, uses the above howto table - */ - -static void -rtype2howto (internal, dst) - arelent *internal; - struct internal_reloc *dst; -{ - switch (dst->r_type) - { - case R_RELBYTE: - internal->howto = howto_table + 0; - break; - case R_RELWORD: - internal->howto = howto_table + 1; - break; - case R_RELLONG: - internal->howto = howto_table + 2; - break; - case R_PCRBYTE: - internal->howto = howto_table + 3; - break; - case R_PCRWORD: - internal->howto = howto_table + 4; - break; - case R_PCRLONG: - internal->howto = howto_table + 5; - break; - case R_MOV16B1: - internal->howto = howto_table + 6; - break; - case R_MOV16B2: - internal->howto = howto_table + 7; - break; - case R_JMP1: - internal->howto = howto_table + 8; - break; - case R_JMP2: - internal->howto = howto_table + 9; - break; - case R_JMPL1: - internal->howto = howto_table + 10; - break; - case R_JMPL2: - internal->howto = howto_table + 11; - break; - case R_MOV24B1: - internal->howto = howto_table + 12; - break; - case R_MOV24B2: - internal->howto = howto_table + 13; - break; - case R_MEM_INDIRECT: - internal->howto = howto_table + 14; - break; - case R_PCRWORD_B: - internal->howto = howto_table + 15; - break; - case R_MOVL1: - internal->howto = howto_table + 16; - break; - case R_MOVL2: - internal->howto = howto_table + 17; - break; - case R_BCC_INV: - internal->howto = howto_table + 18; - break; - case R_JMP_DEL: - internal->howto = howto_table + 19; - break; - default: - abort (); - break; - } -} - -#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) - - -/* Perform any necessary magic to the addend in a reloc entry */ - - -#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ - cache_ptr->addend = ext_reloc.r_offset; - - -#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; -{ - relent->address = reloc->r_vaddr; - rtype2howto (relent, reloc); - - if (((int) reloc->r_symndx) > 0) - { - relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; - } - else - { - relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; - } - - - - relent->addend = reloc->r_offset; - - relent->address -= section->vma; - /* relent->section = 0;*/ -} - -static boolean -h8300_symbol_address_p (abfd, input_section, address) - bfd *abfd; - asection *input_section; - bfd_vma address; -{ - asymbol **s; - - s = _bfd_generic_link_get_symbols (abfd); - BFD_ASSERT (s != (asymbol **) NULL); - - /* Search all the symbols for one in INPUT_SECTION with - address ADDRESS. */ - while (*s) - { - asymbol *p = *s; - if (p->section == input_section - && (input_section->output_section->vma - + input_section->output_offset - + p->value) == address) - return true; - s++; - } - return false; -} - - -/* If RELOC represents a relaxable instruction/reloc, change it into - the relaxed reloc, notify the linker that symbol addresses - have changed (bfd_perform_slip) and return how much the current - section has shrunk by. - - FIXME: Much of this code has knowledge of the ordering of entries - in the howto table. This needs to be fixed. */ - -static int -h8300_reloc16_estimate(abfd, input_section, reloc, shrink, link_info) - bfd *abfd; - asection *input_section; - arelent *reloc; - unsigned int shrink; - struct bfd_link_info *link_info; -{ - bfd_vma value; - bfd_vma dot; - bfd_vma gap; - static asection *last_input_section = NULL; - static arelent *last_reloc = NULL; - - /* The address of the thing to be relocated will have moved back by - the size of the shrink - but we don't change reloc->address here, - since we need it to know where the relocation lives in the source - uncooked section. */ - bfd_vma address = reloc->address - shrink; - - if (input_section != last_input_section) - last_reloc = NULL; - - /* Only examine the relocs which might be relaxable. */ - switch (reloc->howto->type) - { - - /* This is the 16/24 bit absolute branch which could become an 8 bit - pc-relative branch. */ - case R_JMP1: - case R_JMPL1: - /* Get the address of the target of this branch. */ - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - /* Get the address of the next instruction (not the reloc). */ - dot = (input_section->output_section->vma - + input_section->output_offset + address); - - /* Adjust for R_JMP1 vs R_JMPL1. */ - dot += (reloc->howto->type == R_JMP1 ? 1 : 2); - - /* Compute the distance from this insn to the branch target. */ - gap = value - dot; - - /* If the distance is within -128..+128 inclusive, then we can relax - this jump. +128 is valid since the target will move two bytes - closer if we do relax this branch. */ - if ((int)gap >= -128 && (int)gap <= 128 ) - { - - /* It's possible we may be able to eliminate this branch entirely; - if the previous instruction is a branch around this instruction, - and there's no label at this instruction, then we can reverse - the condition on the previous branch and eliminate this jump. - - original: new: - bCC lab1 bCC' lab2 - jmp lab2 - lab1: lab1: - - This saves 4 bytes instead of two, and should be relatively - common. */ - - if (gap <= 126 - && last_reloc - && last_reloc->howto->type == R_PCRBYTE) - { - bfd_vma last_value; - last_value = bfd_coff_reloc16_get_value (last_reloc, link_info, - input_section) + 1; - - if (last_value == dot + 2 - && last_reloc->address + 1 == reloc->address - && ! h8300_symbol_address_p (abfd, input_section, dot - 2)) - { - reloc->howto = howto_table + 19; - last_reloc->howto = howto_table + 18; - last_reloc->sym_ptr_ptr = reloc->sym_ptr_ptr; - last_reloc->addend = reloc->addend; - shrink += 4; - bfd_perform_slip (abfd, 4, input_section, address); - break; - } - } - - /* Change the reloc type. */ - reloc->howto = reloc->howto + 1; - - /* This shrinks this section by two bytes. */ - shrink += 2; - bfd_perform_slip(abfd, 2, input_section, address); - } - break; - - /* This is the 16 bit pc-relative branch which could become an 8 bit - pc-relative branch. */ - case R_PCRWORD: - /* Get the address of the target of this branch, add one to the value - because the addend field in PCrel jumps is off by -1. */ - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section) + 1; - - /* Get the address of the next instruction if we were to relax. */ - dot = input_section->output_section->vma + - input_section->output_offset + address; - - /* Compute the distance from this insn to the branch target. */ - gap = value - dot; - - /* If the distance is within -128..+128 inclusive, then we can relax - this jump. +128 is valid since the target will move two bytes - closer if we do relax this branch. */ - if ((int)gap >= -128 && (int)gap <= 128 ) - { - /* Change the reloc type. */ - reloc->howto = howto_table + 15; - - /* This shrinks this section by two bytes. */ - shrink += 2; - bfd_perform_slip(abfd, 2, input_section, address); - } - break; - - /* This is a 16 bit absolute address in a mov.b insn, which can - become an 8 bit absolute address if it's in the right range. */ - case R_MOV16B1: - /* Get the address of the data referenced by this mov.b insn. */ - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - /* The address is in 0xff00..0xffff inclusive on the h8300 or - 0xffff00..0xffffff inclusive on the h8300h, then we can - relax this mov.b */ - if ((bfd_get_mach (abfd) == bfd_mach_h8300 - && value >= 0xff00 - && value <= 0xffff) - || ((bfd_get_mach (abfd) == bfd_mach_h8300h - || bfd_get_mach (abfd) == bfd_mach_h8300s) - && value >= 0xffff00 - && value <= 0xffffff)) - { - /* Change the reloc type. */ - reloc->howto = reloc->howto + 1; - - /* This shrinks this section by two bytes. */ - shrink += 2; - bfd_perform_slip(abfd, 2, input_section, address); - } - break; - - /* Similarly for a 24 bit absolute address in a mov.b. Note that - if we can't relax this into an 8 bit absolute, we'll fall through - and try to relax it into a 16bit absolute. */ - case R_MOV24B1: - /* Get the address of the data referenced by this mov.b insn. */ - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - /* The address is in 0xffff00..0xffffff inclusive on the h8300h, - then we can relax this mov.b */ - if ((bfd_get_mach (abfd) == bfd_mach_h8300h - || bfd_get_mach (abfd) == bfd_mach_h8300s) - && value >= 0xffff00 - && value <= 0xffffff) - { - /* Change the reloc type. */ - reloc->howto = reloc->howto + 1; - - /* This shrinks this section by four bytes. */ - shrink += 4; - bfd_perform_slip(abfd, 4, input_section, address); - - /* Done with this reloc. */ - break; - } - - /* FALLTHROUGH and try to turn the 32/24 bit reloc into a 16 bit - reloc. */ - - /* This is a 24/32 bit absolute address in a mov insn, which can - become an 16 bit absolute address if it's in the right range. */ - case R_MOVL1: - /* Get the address of the data referenced by this mov insn. */ - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - /* If this address is in 0x0000..0x7fff inclusive or - 0xff8000..0xffffff inclusive, then it can be relaxed. */ - if (value <= 0x7fff || value >= 0xff8000) - { - /* Change the reloc type. */ - reloc->howto = howto_table + 17; - - /* This shrinks this section by two bytes. */ - shrink += 2; - bfd_perform_slip(abfd, 2, input_section, address); - } - break; - - /* No other reloc types represent relaxing opportunities. */ - default: - break; - } - - last_reloc = reloc; - last_input_section = input_section; - return shrink; -} - - -/* Handle relocations for the H8/300, including relocs for relaxed - instructions. - - FIXME: Not all relocations check for overflow! */ - -static void -h8300_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr, - dst_ptr) - bfd *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; -{ - unsigned int src_address = *src_ptr; - unsigned int dst_address = *dst_ptr; - asection *input_section = link_order->u.indirect.section; - bfd_vma value; - bfd_vma dot; - int gap,tmp; - - switch (reloc->howto->type) - { - - /* Generic 8bit pc-relative relocation. */ - case R_PCRBYTE: - /* Get the address of the target of this branch. */ - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - dot = (link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma); - - gap = value - dot; - - /* Sanity check. */ - if (gap < -128 || gap > 126) - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - - /* Everything looks OK. Apply the relocation and update the - src/dst address appropriately. */ - - bfd_put_8 (abfd, gap, data + dst_address); - dst_address++; - src_address++; - - /* All done. */ - break; - - /* Generic 16bit pc-relative relocation. */ - case R_PCRWORD: - /* Get the address of the target of this branch. */ - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - /* Get the address of the instruction (not the reloc). */ - dot = (link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma + 1); - - gap = value - dot; - - /* Sanity check. */ - if (gap > 32766 || gap < -32768) - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - - /* Everything looks OK. Apply the relocation and update the - src/dst address appropriately. */ - - bfd_put_16 (abfd, gap, data + dst_address); - dst_address += 2; - src_address += 2; - - /* All done. */ - break; - - /* Generic 8bit absolute relocation. */ - case R_RELBYTE: - /* Get the address of the object referenced by this insn. */ - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - - /* Sanity check. */ - if (value <= 0xff - || (value >= 0x0000ff00 && value <= 0x0000ffff) - || (value >= 0x00ffff00 && value <= 0x00ffffff) - || (value >= 0xffffff00 && value <= 0xffffffff)) - { - /* Everything looks OK. Apply the relocation and update the - src/dst address appropriately. */ - - bfd_put_8 (abfd, value & 0xff, data + dst_address); - dst_address += 1; - src_address += 1; - } - else - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - - /* All done. */ - break; - - /* Various simple 16bit absolute relocations. */ - case R_MOV16B1: - case R_JMP1: - case R_RELWORD: - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - bfd_put_16 (abfd, value, data + dst_address); - dst_address += 2; - src_address += 2; - break; - - /* Various simple 24/32bit absolute relocations. */ - case R_MOV24B1: - case R_MOVL1: - case R_RELLONG: - /* Get the address of the target of this branch. */ - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section), - bfd_put_32 (abfd, value, data + dst_address); - dst_address += 4; - src_address += 4; - break; - - /* Another 24/32bit absolute relocation. */ - case R_JMPL1: - /* Get the address of the target of this branch. */ - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - - value = ((value & 0x00ffffff) - | (bfd_get_32 (abfd, data + src_address) & 0xff000000)); - bfd_put_32 (abfd, value, data + dst_address); - dst_address += 4; - src_address += 4; - break; - - /* A 16bit abolute relocation that was formerlly a 24/32bit - absolute relocation. */ - case R_MOVL2: - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - - /* Sanity check. */ - if (value < 0x8000 || value > 0xff8000) - { - /* Insert the 16bit value into the proper location. */ - bfd_put_16 (abfd, value, data + dst_address); - - /* Fix the opcode. For all the move insns, we simply - need to turn off bit 0x20 in the previous byte. */ - data[dst_address - 1] &= ~0x20; - dst_address += 2; - src_address += 4; - } - else - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - break; - - /* A 16bit absolute branch that is now an 8-bit pc-relative branch. */ - case R_JMP2: - /* Get the address of the target of this branch. */ - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - - /* Get the address of the next instruction. */ - dot = (link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma + 1); - - gap = value - dot; - - /* Sanity check. */ - if (gap < -128 || gap > 126) - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - - /* Now fix the instruction itself. */ - 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 (); - } - - /* Write out the 8bit value. */ - bfd_put_8 (abfd, gap, data + dst_address); - - dst_address += 1; - src_address += 3; - - break; - - /* A 16bit pc-relative branch that is now an 8-bit pc-relative branch. */ - case R_PCRWORD_B: - /* Get the address of the target of this branch. */ - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - - /* Get the address of the instruction (not the reloc). */ - dot = (link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma - 1); - - gap = value - dot; - - /* Sanity check. */ - if (gap < -128 || gap > 126) - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - - /* Now fix the instruction. */ - switch (data[dst_address - 2]) - { - case 0x58: - /* bCC:16 -> bCC:8 */ - /* Get the condition code from the original insn. */ - tmp = data[dst_address - 1]; - tmp &= 0xf0; - tmp >>= 4; - - /* Now or in the high nibble of the opcode. */ - tmp |= 0x40; - - /* Write it. */ - bfd_put_8 (abfd, tmp, data + dst_address - 2); - break; - - default: - abort (); - } - - /* Output the target. */ - bfd_put_8 (abfd, gap, data + dst_address - 1); - - /* We don't advance dst_address -- the 8bit reloc is applied at - dst_address - 1, so the next insn should begin at dst_address. */ - src_address += 2; - - break; - - /* Similarly for a 24bit absolute that is now 8 bits. */ - case R_JMPL2: - /* Get the address of the target of this branch. */ - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - - /* Get the address of the instruction (not the reloc). */ - dot = (link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma + 2); - - gap = value - dot; - - /* Fix the instruction. */ - switch (data[src_address]) - { - case 0x5e: - /* jsr -> bsr */ - bfd_put_8 (abfd, 0x55, data + dst_address); - break; - case 0x5a: - /* jmp ->bra */ - bfd_put_8 (abfd, 0x40, data + dst_address); - break; - default: - abort (); - } - - bfd_put_8 (abfd, gap, data + dst_address + 1); - dst_address += 2; - src_address += 4; - - break; - - /* A 16bit absolute mov.b that is now an 8bit absolute mov.b. */ - case R_MOV16B2: - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - - /* Sanity check. */ - if (data[dst_address - 2] != 0x6a) - abort (); - - /* Fix up the opcode. */ - switch (data[src_address-1] & 0xf0) - { - case 0x00: - data[dst_address - 2] = (data[src_address-1] & 0xf) | 0x20; - break; - case 0x80: - data[dst_address - 2] = (data[src_address-1] & 0xf) | 0x30; - break; - default: - abort (); - } - - bfd_put_8 (abfd, value & 0xff, data + dst_address - 1); - src_address += 2; - break; - - /* Similarly for a 24bit mov.b */ - case R_MOV24B2: - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - - /* Sanity check. */ - if (data[dst_address - 2] != 0x6a) - abort (); - - /* Fix up the opcode. */ - switch (data[src_address-1] & 0xf0) - { - case 0x20: - data[dst_address - 2] = (data[src_address-1] & 0xf) | 0x20; - break; - case 0xa0: - data[dst_address - 2] = (data[src_address-1] & 0xf) | 0x30; - break; - default: - abort (); - } - - bfd_put_8 (abfd, value & 0xff, data + dst_address - 1); - src_address += 4; - break; - - case R_BCC_INV: - /* Get the address of the target of this branch. */ - value = bfd_coff_reloc16_get_value(reloc, link_info, input_section); - - dot = (link_order->offset - + dst_address - + link_order->u.indirect.section->output_section->vma) + 1; - - gap = value - dot; - - /* Sanity check. */ - if (gap < -128 || gap > 126) - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - - /* Everything looks OK. Fix the condition in the instruction, apply - the relocation, and update the src/dst address appropriately. */ - - bfd_put_8 (abfd, bfd_get_8 (abfd, data + dst_address - 1) ^ 1, - data + dst_address - 1); - bfd_put_8 (abfd, gap, data + dst_address); - dst_address++; - src_address++; - - /* All done. */ - break; - - case R_JMP_DEL: - src_address += 4; - break; - - /* An 8bit memory indirect instruction (jmp/jsr). - - There's several things that need to be done to handle - this relocation. - - If this is a reloc against the absolute symbol, then - we should handle it just R_RELBYTE. Likewise if it's - for a symbol with a value ge 0 and le 0xff. - - Otherwise it's a jump/call through the function vector, - and the linker is expected to set up the function vector - and put the right value into the jump/call instruction. */ - case R_MEM_INDIRECT: - { - /* We need to find the symbol so we can determine it's - address in the function vector table. */ - asymbol *symbol; - bfd_vma value; - const char *name; - struct funcvec_hash_entry *h; - asection *vectors_sec = h8300_coff_hash_table (link_info)->vectors_sec; - - /* First see if this is a reloc against the absolute symbol - or against a symbol with a nonnegative value <= 0xff. */ - symbol = *(reloc->sym_ptr_ptr); - value = bfd_coff_reloc16_get_value (reloc, link_info, input_section); - if (symbol == bfd_abs_section_ptr->symbol - || (value >= 0 && value <= 0xff)) - { - /* This should be handled in a manner very similar to - R_RELBYTES. If the value is in range, then just slam - the value into the right location. Else trigger a - reloc overflow callback. */ - if (value >= 0 && value <= 0xff) - { - bfd_put_8 (abfd, value, data + dst_address); - dst_address += 1; - src_address += 1; - } - else - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), - reloc->howto->name, reloc->addend, input_section->owner, - input_section, reloc->address))) - abort (); - } - break; - } - - /* This is a jump/call through a function vector, and we're - expected to create the function vector ourselves. - - First look up this symbol in the linker hash table -- we need - the derived linker symbol which holds this symbol's index - in the function vector. */ - name = symbol->name; - if (symbol->flags & BSF_LOCAL) - { - char *new_name = bfd_malloc (strlen (name) + 9); - if (new_name == NULL) - abort (); - - strcpy (new_name, name); - sprintf (new_name + strlen (name), "_%08x", - (int)symbol->section); - name = new_name; - } - - h = funcvec_hash_lookup (h8300_coff_hash_table (link_info)->funcvec_hash_table, - name, false, false); - - /* This shouldn't ever happen. If it does that means we've got - data corruption of some kind. Aborting seems like a reasonable - think to do here. */ - if (h == NULL || vectors_sec == NULL) - abort (); - - /* Place the address of the function vector entry into the - reloc's address. */ - bfd_put_8 (abfd, - vectors_sec->output_offset + h->offset, - data + dst_address); - - dst_address++; - src_address++; - - /* Now create an entry in the function vector itself. */ - if (bfd_get_mach (input_section->owner) == bfd_mach_h8300) - bfd_put_16 (abfd, - bfd_coff_reloc16_get_value (reloc, - link_info, - input_section), - vectors_sec->contents + h->offset); - else if (bfd_get_mach (input_section->owner) == bfd_mach_h8300h - || bfd_get_mach (input_section->owner) == bfd_mach_h8300s) - bfd_put_32 (abfd, - bfd_coff_reloc16_get_value (reloc, - link_info, - input_section), - vectors_sec->contents + h->offset); - else - abort (); - - /* Gross. We've already written the contents of the vector section - before we get here... So we write it again with the new data. */ - bfd_set_section_contents (vectors_sec->output_section->owner, - vectors_sec->output_section, - vectors_sec->contents, - vectors_sec->output_offset, - vectors_sec->_raw_size); - break; - } - - default: - abort (); - break; - - } - - *src_ptr = src_address; - *dst_ptr = dst_address; -} - - -/* Routine for the h8300 linker. - - This routine is necessary to handle the special R_MEM_INDIRECT - relocs on the h8300. It's responsible for generating a vectors - section and attaching it to an input bfd as well as sizing - the vectors section. It also creates our vectors hash table. - - It uses the generic linker routines to actually add the symbols. - from this BFD to the bfd linker hash table. It may add a few - selected static symbols to the bfd linker hash table. */ - -static boolean -h8300_bfd_link_add_symbols(abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - asection *sec; - struct funcvec_hash_table *funcvec_hash_table; - - /* If we haven't created a vectors section, do so now. */ - if (!h8300_coff_hash_table (info)->vectors_sec) - { - flagword flags; - - /* Make sure the appropriate flags are set, including SEC_IN_MEMORY. */ - flags = (SEC_ALLOC | SEC_LOAD - | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_READONLY); - h8300_coff_hash_table (info)->vectors_sec = bfd_make_section (abfd, - ".vectors"); - - /* If the section wasn't created, or we couldn't set the flags, - quit quickly now, rather than dieing a painful death later. */ - if (! h8300_coff_hash_table (info)->vectors_sec - || ! bfd_set_section_flags (abfd, - h8300_coff_hash_table(info)->vectors_sec, - flags)) - return false; - - /* Also create the vector hash table. */ - funcvec_hash_table = ((struct funcvec_hash_table *) - bfd_alloc (abfd, sizeof (struct funcvec_hash_table))); - - if (!funcvec_hash_table) - return false; - - /* And initialize the funcvec hash table. */ - if (!funcvec_hash_table_init (funcvec_hash_table, abfd, - funcvec_hash_newfunc)) - { - bfd_release (abfd, funcvec_hash_table); - return false; - } - - /* Store away a pointer to the funcvec hash table. */ - h8300_coff_hash_table (info)->funcvec_hash_table = funcvec_hash_table; - } - - /* Load up the function vector hash table. */ - funcvec_hash_table = h8300_coff_hash_table (info)->funcvec_hash_table; - - /* Add the symbols using the generic code. */ - _bfd_generic_link_add_symbols (abfd, info); - - /* Now scan the relocs for all the sections in this bfd; create - additional space in the .vectors section as needed. */ - for (sec = abfd->sections; sec; sec = sec->next) - { - long reloc_size, reloc_count, i; - asymbol **symbols; - arelent **relocs; - - /* Suck in the relocs, symbols & canonicalize them. */ - reloc_size = bfd_get_reloc_upper_bound (abfd, sec); - if (reloc_size <= 0) - continue; - - relocs = (arelent **)bfd_malloc ((size_t)reloc_size); - if (!relocs) - return false; - - /* The symbols should have been read in by _bfd_generic link_add_symbols - call abovec, so we can cheat and use the pointer to them that was - saved in the above call. */ - symbols = _bfd_generic_link_get_symbols(abfd); - reloc_count = bfd_canonicalize_reloc (abfd, sec, relocs, symbols); - if (reloc_count <= 0) - { - free (relocs); - continue; - } - - /* Now walk through all the relocations in this section. */ - for (i = 0; i < reloc_count; i++) - { - arelent *reloc = relocs[i]; - asymbol *symbol = *(reloc->sym_ptr_ptr); - const char *name; - - /* We've got an indirect reloc. See if we need to add it - to the function vector table. At this point, we have - to add a new entry for each unique symbol referenced - by an R_MEM_INDIRECT relocation except for a reloc - against the absolute section symbol. */ - if (reloc->howto->type == R_MEM_INDIRECT - && symbol != bfd_abs_section_ptr->symbol) - - { - struct funcvec_hash_entry *h; - - name = symbol->name; - if (symbol->flags & BSF_LOCAL) - { - char *new_name = bfd_malloc (strlen (name) + 9); - - if (new_name == NULL) - abort (); - - strcpy (new_name, name); - sprintf (new_name + strlen (name), "_%08x", - (int)symbol->section); - name = new_name; - } - - /* Look this symbol up in the function vector hash table. */ - h = funcvec_hash_lookup (h8300_coff_hash_table (info)->funcvec_hash_table, - name, false, false); - - - /* If this symbol isn't already in the hash table, add - it and bump up the size of the hash table. */ - if (h == NULL) - { - h = funcvec_hash_lookup (h8300_coff_hash_table (info)->funcvec_hash_table, - name, true, true); - if (h == NULL) - { - free (relocs); - return false; - } - - /* Bump the size of the vectors section. Each vector - takes 2 bytes on the h8300 and 4 bytes on the h8300h. */ - if (bfd_get_mach (abfd) == bfd_mach_h8300) - h8300_coff_hash_table (info)->vectors_sec->_raw_size += 2; - else if (bfd_get_mach (abfd) == bfd_mach_h8300h - || bfd_get_mach (abfd) == bfd_mach_h8300s) - h8300_coff_hash_table (info)->vectors_sec->_raw_size += 4; - } - } - } - - /* We're done with the relocations, release them. */ - free (relocs); - } - - /* Now actually allocate some space for the function vector. It's - wasteful to do this more than once, but this is easier. */ - if (h8300_coff_hash_table (info)->vectors_sec->_raw_size != 0) - { - /* Free the old contents. */ - if (h8300_coff_hash_table (info)->vectors_sec->contents) - free (h8300_coff_hash_table (info)->vectors_sec->contents); - - /* Allocate new contents. */ - h8300_coff_hash_table (info)->vectors_sec->contents - = bfd_malloc (h8300_coff_hash_table (info)->vectors_sec->_raw_size); - } - - return true; -} - -#define coff_reloc16_extra_cases h8300_reloc16_extra_cases -#define coff_reloc16_estimate h8300_reloc16_estimate -#define coff_bfd_link_add_symbols h8300_bfd_link_add_symbols -#define coff_bfd_link_hash_table_create h8300_coff_link_hash_table_create - -#define COFF_LONG_FILENAMES -#include "coffcode.h" - - -#undef coff_bfd_get_relocated_section_contents -#undef coff_bfd_relax_section -#define coff_bfd_get_relocated_section_contents \ - bfd_coff_reloc16_get_relocated_section_contents -#define coff_bfd_relax_section bfd_coff_reloc16_relax_section - - - -const bfd_target h8300coff_vec = -{ - "coff-h8300", /* name */ - bfd_target_coff_flavour, - BFD_ENDIAN_BIG, /* data byte order is big */ - BFD_ENDIAN_BIG, /* header byte order is big */ - - (HAS_RELOC | EXEC_P | /* object flags */ - HAS_LINENO | HAS_DEBUG | - HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ), - (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ - '_', /* leading char */ - '/', /* ar_pad_char */ - 15, /* ar_max_namelen */ - bfd_getb64, bfd_getb_signed_64, bfd_putb64, - bfd_getb32, bfd_getb_signed_32, bfd_putb32, - bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ - bfd_getb64, bfd_getb_signed_64, bfd_putb64, - bfd_getb32, bfd_getb_signed_32, bfd_putb32, - bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ - - {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ - bfd_generic_archive_p, _bfd_dummy_target}, - {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ - bfd_false}, - {bfd_false, coff_write_object_contents, /* bfd_write_contents */ - _bfd_write_archive_contents, bfd_false}, - - BFD_JUMP_TABLE_GENERIC (coff), - BFD_JUMP_TABLE_COPY (coff), - BFD_JUMP_TABLE_CORE (_bfd_nocore), - BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), - BFD_JUMP_TABLE_SYMBOLS (coff), - BFD_JUMP_TABLE_RELOCS (coff), - BFD_JUMP_TABLE_WRITE (coff), - BFD_JUMP_TABLE_LINK (coff), - BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), - - COFF_SWAP_TABLE, -}; |