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- /* BFD library support routines for the Hitachi H8/300 architecture.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
- Hacked by Steve Chamberlain of 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. */
-
- #include "bfd.h"
- #include "sysdep.h"
- #include "libbfd.h"
-
- #define DEFINE_TABLE
- #include "opcode/h8300.h"
-
- #define MAXSAME 14
-
- static struct h8_opcode * h8_opcodes_sorted[256][MAXSAME];
-
- /* Run through the opcodes and sort them into order to make them easy
- to disassemble
- */
- static void
- DEFUN_VOID(bfd_h8_disassemble_init)
- {
- unsigned int i;
- struct h8_opcode *p;
-
- for (p = h8_opcodes; p->name; p++) {
- int n1 = 0;
- int n2 = 0;
-
- if ((int)p->data.nib[0] < 16) {
- n1 =(int) p->data.nib[0] ;
- } else n1 = 0;
- if ((int)p->data.nib[1] < 16) {
- n2 = (int) p->data.nib[1];
- }else n2 = 0;
-
- for (i = 0; i < MAXSAME; i++) {
- int j = n1 * 16 + n2;
- if (h8_opcodes_sorted[j][i] == (struct h8_opcode *)NULL) {
- h8_opcodes_sorted[j][i] = p;
- break;
- }
- }
-
- if (i==MAXSAME)abort();
-
- /* Just make sure there are an even number of nibbles in it, and
- that the count is the same s the length */
- for (i = 0; p->data.nib[i] != E; i++)
- /*EMPTY*/;
- if (i & 1) abort();
- p->length = i/2;
- }
- for (i = 0; i < 256; i++)
- {
- if (h8_opcodes_sorted[i][0])
- p = h8_opcodes_sorted[i][0];
- else h8_opcodes_sorted[i][0] = p;
- }
- }
-
-
- unsigned int
- DEFUN(bfd_h8_disassemble,(addr, data, stream),
- bfd_vma addr AND
- CONST bfd_byte *data AND
- FILE *stream)
- {
- /* Find the first entry in the table for this opcode */
- static CONST char *regnames[] = {
- "r0h","r1h","r2h","r3h","r4h","r5h","r6h","r7h",
- "r0l","r1l","r2l","r3l","r4l","r5l","r6l","r7l" };
-
- int rs = 0;
- int rd = 0;
- int rdisp = 0;
- int abs = 0;
- struct h8_opcode **p = h8_opcodes_sorted[(unsigned)(data[0])];
- struct h8_opcode *q;
-
- /* Find the exact opcode/arg combo */
- while (*p) {
- op_type *nib;
- unsigned int len = 0;
- q = *p++;
- nib =q->data.nib;
- while (*nib != E) {
- op_type looking_for = *nib;
- int thisnib = data[len>>1] ;
- thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf);
- if ((int)looking_for & (int)B31) {
- if (((int)thisnib & 0x8) ==0) goto fail;
- looking_for = (op_type)((int)looking_for & ~(int)B31);
- }
- if ((int)looking_for & (int)B30) {
- if (((int)thisnib & 0x8) !=0) goto fail;
- looking_for = (op_type)((int)looking_for & ~(int)B30);
- }
- switch (looking_for) {
- case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
- case 8: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
- if ((int)looking_for != thisnib) goto fail;
- break;
- case ABS16SRC:
- case ABS16OR8SRC:
- case ABS16ORREL8SRC:
- case ABS16DST:
- case ABS16OR8DST:
- case DISPSRC:
- case DISPDST:
- case IMM16:
- abs = (data[len>>1]) * 256 + data[(len+2)>>1];
- len+=3;
- nib+=3;
- break;
- case DISPREG:
- rdisp = thisnib;
- break;
- case KBIT:
- abs = thisnib == 0x8 ? 2:1;
- break;
- case IMM8:
- case ABS8SRC:
- case ABS8DST:
- case MEMIND:
- case DISP8:
- abs= data[len>>1];
- len++;
- nib++;
- break;
- case IMM3:
- abs = thisnib ;
- break;
- case RS8:
- case RS16:
- case RSINC:
- case RSIND:
- rs = thisnib;
- break;
- case RD16:
- case RDDEC:
- case RD8:
- case RDIND:
- rd = thisnib;
- break;
- default:
- fprintf(stream, "Dont understand \n");
- goto found;
- }
- len++;
- nib++;
- }
- goto found;
- fail:
- ;
-
- }
- fprintf(stream, "%02x %02x .word\tH'%x,H'%x",
- data[0], data[1],
- data[0], data[1]);
- return 2;
- found:;
- { int i;
-
- for (i = 0; i < q->length; i++) {
- fprintf(stream, "%02x ", data[i]);
- }
- for (; i < 6; i++) {
- fprintf(stream, " ");
- }
- }
- fprintf(stream, "%s\t",q->name);
- /* Now print out the args */
- {
- op_type *args = q->args.nib;
- int hadone = 0;
- while (*args != E) {
- if (hadone)
- fprintf(stream, ",");
- switch ((int)(*args) & ~((int)B30|(int)B31)) {
- case IMM16:
- case IMM8:
- case IMM3:
- fprintf(stream, "#0x%x", (unsigned)abs);
- break;
- case RD8:
- fprintf(stream, "%s", regnames[rd]);
- break;
- case RS8:
- fprintf(stream, "%s",regnames[rs]);
- break;
- case RD16:
- fprintf(stream, "r%d", rd& 0x7);
- break;
- case RS16:
- fprintf(stream, "r%d", rs & 0x7);
- break;
- case RSINC:
- fprintf(stream, "@r%d+", rs & 0x7);
- break;
- case RDDEC:
- fprintf(stream, "@-r%d", rd & 0x7);
- break;
- case RDIND:
- fprintf(stream, "@r%d", rd & 0x7);
- break;
- case RSIND:
- fprintf(stream, "@r%d",rs & 0x7);
- break;
- case ABS8SRC:
- case ABS16SRC:
- case ABS16OR8SRC:
- case ABS16ORREL8SRC:
- case ABS16OR8DST:
- case ABS16DST:
- case ABS8DST:
- fprintf(stream, "@0x%x", (unsigned)abs);
- break;
- case MEMIND:
- fprintf(stream, "@@%d (%x)",abs, abs);
- break;
- case DISP8:
- fprintf(stream, ".%s%d (%x)",(char)abs>0 ? "+" :"", (char)abs,
- addr + (char)abs + 2);
- break;
- case DISPSRC:
- case DISPDST:
- fprintf(stream, "@(0x%x,r%d)", abs, rdisp & 0x7);
- break;
- case CCR:
- fprintf(stream, "ccr");
- break;
- case KBIT:
- fprintf(stream, "#%d",abs);
- break;
- default:
- abort();
- }
- hadone = 1;
- args++;
- }
- }
- return q->length;
- }
-
-
-
- unsigned int DEFUN(print_insn_h8300,(addr, data, file),
- bfd_vma addr AND
- CONST char *data AND
- PTR file)
- {
- static boolean init;
- if (!init) {
- bfd_h8_disassemble_init();
- init= true;
- }
-
- return bfd_h8_disassemble(addr, (bfd_byte *)data, file);
- }
-
- /*
- Relocations for the H8
-
- */
- static bfd_reloc_status_type
- DEFUN(howto16_callback,(abfd, reloc_entry, symbol_in, data,
- ignore_input_section, ignore_bfd),
- bfd *abfd AND
- arelent *reloc_entry AND
- struct symbol_cache_entry *symbol_in AND
- PTR data AND
- asection *ignore_input_section AND
- bfd *ignore_bfd)
- {
- long relocation = 0;
- bfd_vma addr = reloc_entry->address;
- long x = bfd_get_16(abfd, (bfd_byte *)data + addr);
-
- HOWTO_PREPARE(relocation, symbol_in);
-
- x = (x + relocation + reloc_entry->addend);
-
- bfd_put_16(abfd, x, (bfd_byte *)data + addr);
- return bfd_reloc_ok;
- }
-
-
- static bfd_reloc_status_type
- DEFUN(howto8_callback,(abfd, reloc_entry, symbol_in, data,
- ignore_input_section, ignore_bfd),
- bfd *abfd AND
- arelent *reloc_entry AND
- struct symbol_cache_entry *symbol_in AND
- PTR data AND
- asection *ignore_input_section AND
- bfd *ignore_bfd)
- {
- long relocation = 0;
- bfd_vma addr = reloc_entry->address;
- long x = bfd_get_8(abfd, (bfd_byte *)data + addr);
-
- HOWTO_PREPARE(relocation, symbol_in);
-
- x = (x + relocation + reloc_entry->addend);
-
- bfd_put_8(abfd, x, (bfd_byte *)data + addr);
- return bfd_reloc_ok;
- }
-
-
- static bfd_reloc_status_type
- DEFUN(howto8_FFnn_callback,(abfd, reloc_entry, symbol_in, data,
- ignore_input_section, ignore_bfd),
- bfd *abfd AND
- arelent *reloc_entry AND
- struct symbol_cache_entry *symbol_in AND
- PTR data AND
- asection *ignore_input_section AND
- bfd *ignore_bfd)
- {
- long relocation = 0;
- bfd_vma addr = reloc_entry->address;
-
- long x = bfd_get_8(abfd, (bfd_byte *)data + addr);
- abort();
- HOWTO_PREPARE(relocation, symbol_in);
-
- x = (x + relocation + reloc_entry->addend);
-
- bfd_put_8(abfd, x, (bfd_byte *)data + addr);
- return bfd_reloc_ok;
- }
-
- static bfd_reloc_status_type
- DEFUN(howto8_pcrel_callback,(abfd, reloc_entry, symbol_in, data,
- ignore_input_section, ignore_bfd),
- bfd *abfd AND
- arelent *reloc_entry AND
- struct symbol_cache_entry *symbol_in AND
- PTR data AND
- asection *ignore_input_section AND
- bfd *ignore_bfd)
- {
- long relocation = 0;
- bfd_vma addr = reloc_entry->address;
- long x = bfd_get_8(abfd, (bfd_byte *)data + addr);
- abort();
- HOWTO_PREPARE(relocation, symbol_in);
-
- x = (x + relocation + reloc_entry->addend);
-
- bfd_put_8(abfd, x, (bfd_byte *)data + addr);
- return bfd_reloc_ok;
- }
-
-
-
- static reloc_howto_type howto_16
- = NEWHOWTO(howto16_callback,"abs16",1,false,false);
- static reloc_howto_type howto_8
- = NEWHOWTO(howto8_callback,"abs8",0,false,false);
-
- static reloc_howto_type howto_8_FFnn
- = NEWHOWTO(howto8_FFnn_callback,"ff00+abs8",0,false,false);
-
- static reloc_howto_type howto_8_pcrel
- = NEWHOWTO(howto8_pcrel_callback,"pcrel8",0,false,true);
-
-
- static CONST struct reloc_howto_struct *
- DEFUN(local_bfd_reloc_type_lookup,(arch, code),
- CONST struct bfd_arch_info *arch AND
- bfd_reloc_code_real_type code)
- {
- switch (code) {
- case BFD_RELOC_16:
- return &howto_16;
- case BFD_RELOC_8_FFnn:
- return &howto_8_FFnn;
- case BFD_RELOC_8:
- return &howto_8;
- case BFD_RELOC_8_PCREL:
- return &howto_8_pcrel;
- default:
- return (reloc_howto_type *)NULL;
- }
- }
-
- int bfd_default_scan_num_mach();
-
- static boolean
- DEFUN(h8300_scan,(info, string),
- CONST struct bfd_arch_info *info AND
- CONST char *string)
- {
- if (strcmp(string,"h8300") == 0) return true;
- if (strcmp(string,"H8300") == 0) return true;
- if (strcmp(string,"h8/300") == 0) return true;
- if (strcmp(string,"H8/300") == 0) return true;
- return false;
- }
-
- static bfd_arch_info_type arch_info_struct =
- {
- 16, /* 16 bits in a word */
- 16, /* 16 bits in an address */
- 8, /* 8 bits in a byte */
- bfd_arch_h8300,
- 0, /* only 1 machine */
- "H8/300", /* arch_name */
- "H8/300", /* printable name */
- 1,
- true, /* the default machine */
- bfd_default_compatible,
- h8300_scan,
- print_insn_h8300,
- /* local_bfd_reloc_type_lookup, */
- 0,
- };
-
- void
- DEFUN_VOID(bfd_h8300_arch)
- {
- bfd_arch_linkin(&arch_info_struct);
- }
-