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Diffstat (limited to 'opcodes/m68hc11-dis.c')
| -rw-r--r-- | opcodes/m68hc11-dis.c | 608 |
1 files changed, 0 insertions, 608 deletions
diff --git a/opcodes/m68hc11-dis.c b/opcodes/m68hc11-dis.c deleted file mode 100644 index 97c90fb44ad..00000000000 --- a/opcodes/m68hc11-dis.c +++ /dev/null @@ -1,608 +0,0 @@ -/* m68hc11-dis.c -- Motorola 68HC11 & 68HC12 disassembly - Copyright 1999, 2000 Free Software Foundation, Inc. - Written by Stephane Carrez (stcarrez@worldnet.fr) - -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 <stdio.h> - -#include "ansidecl.h" -#include "opcode/m68hc11.h" -#include "dis-asm.h" - -static const char *const reg_name[] = { - "X", "Y", "SP", "PC" -}; - -static const char *const reg_src_table[] = { - "A", "B", "CCR", "TMP3", "D", "X", "Y", "SP" -}; - -static const char *const reg_dst_table[] = { - "A", "B", "CCR", "TMP2", "D", "X", "Y", "SP" -}; - -#define OP_PAGE_MASK (M6811_OP_PAGE2|M6811_OP_PAGE3|M6811_OP_PAGE4) - -static int -read_memory (memaddr, buffer, size, info) - bfd_vma memaddr; - bfd_byte *buffer; - int size; - struct disassemble_info *info; -{ - int status; - - /* Get first byte. Only one at a time because we don't know the - size of the insn. */ - status = (*info->read_memory_func) (memaddr, buffer, size, info); - if (status != 0) - { - (*info->memory_error_func) (status, memaddr, info); - return -1; - } - return 0; -} - - -/* Read the 68HC12 indexed operand byte and print the corresponding mode. - Returns the number of bytes read or -1 if failure. */ -static int -print_indexed_operand (memaddr, info, mov_insn) - bfd_vma memaddr; - struct disassemble_info *info; - int mov_insn; -{ - bfd_byte buffer[4]; - int reg; - int status; - short sval; - int pos = 1; - - status = read_memory (memaddr, &buffer[0], 1, info); - if (status != 0) - { - return status; - } - - /* n,r with 5-bits signed constant. */ - if ((buffer[0] & 0x20) == 0) - { - reg = (buffer[0] >> 6) & 3; - sval = (buffer[0] & 0x1f); - if (sval & 0x10) - sval |= 0xfff0; - (*info->fprintf_func) (info->stream, "%d,%s", - (int) sval, reg_name[reg]); - } - - /* Auto pre/post increment/decrement. */ - else if ((buffer[0] & 0xc0) != 0xc0) - { - const char *mode; - - reg = (buffer[0] >> 6) & 3; - sval = (buffer[0] & 0x0f); - if (sval & 0x8) - { - sval |= 0xfff0; - sval = -sval; - mode = "-"; - } - else - { - sval = sval + 1; - mode = "+"; - } - (*info->fprintf_func) (info->stream, "%d,%s%s%s", - (int) sval, - (buffer[0] & 0x10 ? "" : mode), - reg_name[reg], (buffer[0] & 0x10 ? mode : "")); - } - - /* [n,r] 16-bits offset indexed indirect. */ - else if ((buffer[0] & 0x07) == 3) - { - if (mov_insn) - { - (*info->fprintf_func) (info->stream, "<invalid op: 0x%x>", - buffer[0] & 0x0ff); - return 0; - } - reg = (buffer[0] >> 3) & 0x03; - status = read_memory (memaddr + pos, &buffer[0], 2, info); - if (status != 0) - { - return status; - } - - pos += 2; - sval = ((buffer[0] << 8) | (buffer[1] & 0x0FF)); - (*info->fprintf_func) (info->stream, "[%u,%s]", - sval & 0x0ffff, reg_name[reg]); - } - else if ((buffer[0] & 0x4) == 0) - { - if (mov_insn) - { - (*info->fprintf_func) (info->stream, "<invalid op: 0x%x>", - buffer[0] & 0x0ff); - return 0; - } - reg = (buffer[0] >> 3) & 0x03; - status = read_memory (memaddr + pos, - &buffer[1], (buffer[0] & 0x2 ? 2 : 1), info); - if (status != 0) - { - return status; - } - if (buffer[0] & 2) - { - sval = ((buffer[1] << 8) | (buffer[2] & 0x0FF)); - sval &= 0x0FFFF; - pos += 2; - } - else - { - sval = buffer[1] & 0x00ff; - if (buffer[0] & 0x01) - sval |= 0xff00; - pos++; - } - (*info->fprintf_func) (info->stream, "%d,%s", - (int) sval, reg_name[reg]); - } - else - { - reg = (buffer[0] >> 3) & 0x03; - switch (buffer[0] & 3) - { - case 0: - (*info->fprintf_func) (info->stream, "A,%s", reg_name[reg]); - break; - case 1: - (*info->fprintf_func) (info->stream, "B,%s", reg_name[reg]); - break; - case 2: - (*info->fprintf_func) (info->stream, "D,%s", reg_name[reg]); - break; - case 3: - default: - (*info->fprintf_func) (info->stream, "[D,%s]", reg_name[reg]); - break; - } - } - - return pos; -} - -/* Disassemble one instruction at address 'memaddr'. Returns the number - of bytes used by that instruction. */ -static int -print_insn (memaddr, info, arch) - bfd_vma memaddr; - struct disassemble_info *info; - int arch; -{ - int status; - bfd_byte buffer[4]; - unsigned char code; - long format, pos, i; - short sval; - const struct m68hc11_opcode *opcode; - - /* Get first byte. Only one at a time because we don't know the - size of the insn. */ - status = read_memory (memaddr, buffer, 1, info); - if (status != 0) - { - return status; - } - - format = 0; - code = buffer[0]; - pos = 0; - - /* Look for page2,3,4 opcodes. */ - if (code == M6811_OPCODE_PAGE2) - { - pos++; - format = M6811_OP_PAGE2; - } - else if (code == M6811_OPCODE_PAGE3 && arch == cpu6811) - { - pos++; - format = M6811_OP_PAGE3; - } - else if (code == M6811_OPCODE_PAGE4 && arch == cpu6811) - { - pos++; - format = M6811_OP_PAGE4; - } - - /* We are in page2,3,4; get the real opcode. */ - if (pos == 1) - { - status = read_memory (memaddr + pos, &buffer[1], 1, info); - if (status != 0) - { - return status; - } - code = buffer[1]; - } - - - /* Look first for a 68HC12 alias. All of them are 2-bytes long and - in page 1. There is no operand to print. We read the second byte - only when we have a possible match. */ - if ((arch & cpu6812) && format == 0) - { - int must_read = 1; - - /* Walk the alias table to find a code1+code2 match. */ - for (i = 0; i < m68hc12_num_alias; i++) - { - if (m68hc12_alias[i].code1 == code) - { - if (must_read) - { - status = read_memory (memaddr + pos + 1, - &buffer[1], 1, info); - if (status != 0) - break; - - must_read = 1; - } - if (m68hc12_alias[i].code2 == (unsigned char) buffer[1]) - { - (*info->fprintf_func) (info->stream, "%s", - m68hc12_alias[i].name); - return 2; - } - } - } - } - - pos++; - - /* Scan the opcode table until we find the opcode - with the corresponding page. */ - opcode = m68hc11_opcodes; - for (i = 0; i < m68hc11_num_opcodes; i++, opcode++) - { - int offset; - - if ((opcode->arch & arch) == 0) - continue; - if (opcode->opcode != code) - continue; - if ((opcode->format & OP_PAGE_MASK) != format) - continue; - - if (opcode->format & M6812_OP_REG) - { - int j; - int is_jump; - - if (opcode->format & M6811_OP_JUMP_REL) - is_jump = 1; - else - is_jump = 0; - - status = read_memory (memaddr + pos, &buffer[0], 1, info); - if (status != 0) - { - return status; - } - for (j = 0; i + j < m68hc11_num_opcodes; j++) - { - if ((opcode[j].arch & arch) == 0) - continue; - if (opcode[j].opcode != code) - continue; - if (is_jump) - { - if (!(opcode[j].format & M6811_OP_JUMP_REL)) - continue; - - if ((opcode[j].format & M6812_OP_IBCC_MARKER) - && (buffer[0] & 0xc0) != 0x80) - continue; - if ((opcode[j].format & M6812_OP_TBCC_MARKER) - && (buffer[0] & 0xc0) != 0x40) - continue; - if ((opcode[j].format & M6812_OP_DBCC_MARKER) - && (buffer[0] & 0xc0) != 0) - continue; - if ((opcode[j].format & M6812_OP_EQ_MARKER) - && (buffer[0] & 0x20) == 0) - break; - if (!(opcode[j].format & M6812_OP_EQ_MARKER) - && (buffer[0] & 0x20) != 0) - break; - continue; - } - if (opcode[j].format & M6812_OP_EXG_MARKER && buffer[0] & 0x80) - break; - if ((opcode[j].format & M6812_OP_SEX_MARKER) - && (((buffer[0] & 0x07) >= 3 && (buffer[0] & 7) <= 7)) - && ((buffer[0] & 0x0f0) <= 0x20)) - break; - if (opcode[j].format & M6812_OP_TFR_MARKER - && !(buffer[0] & 0x80)) - break; - } - if (i + j < m68hc11_num_opcodes) - opcode = &opcode[j]; - } - - /* We have found the opcode. Extract the operand and print it. */ - (*info->fprintf_func) (info->stream, "%s", opcode->name); - - format = opcode->format; - if (format & (M6811_OP_MASK | M6811_OP_BITMASK - | M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) - { - (*info->fprintf_func) (info->stream, "\t"); - } - - /* The movb and movw must be handled in a special way... */ - offset = 0; - if (format & (M6812_OP_IDX_P2 | M6812_OP_IND16_P2)) - { - if ((format & M6812_OP_IDX_P2) - && (format & (M6811_OP_IMM8 | M6811_OP_IMM16 | M6811_OP_IND16))) - offset = 1; - } - - /* Operand with one more byte: - immediate, offset, - direct-low address. */ - if (format & - (M6811_OP_IMM8 | M6811_OP_IX | M6811_OP_IY | M6811_OP_DIRECT)) - { - status = read_memory (memaddr + pos + offset, &buffer[0], 1, info); - if (status != 0) - { - return status; - } - - pos++; - offset = -1; - if (format & M6811_OP_IMM8) - { - (*info->fprintf_func) (info->stream, "#%d", (int) buffer[0]); - format &= ~M6811_OP_IMM8; - } - else if (format & M6811_OP_IX) - { - /* Offsets are in range 0..255, print them unsigned. */ - (*info->fprintf_func) (info->stream, "%u,x", buffer[0] & 0x0FF); - format &= ~M6811_OP_IX; - } - else if (format & M6811_OP_IY) - { - (*info->fprintf_func) (info->stream, "%u,y", buffer[0] & 0x0FF); - format &= ~M6811_OP_IY; - } - else if (format & M6811_OP_DIRECT) - { - (*info->fprintf_func) (info->stream, "*"); - (*info->print_address_func) (buffer[0] & 0x0FF, info); - format &= ~M6811_OP_DIRECT; - } - } - -#define M6812_INDEXED_FLAGS (M6812_OP_IDX|M6812_OP_IDX_1|M6812_OP_IDX_2) - /* Analyze the 68HC12 indexed byte. */ - if (format & M6812_INDEXED_FLAGS) - { - status = print_indexed_operand (memaddr + pos, info, 0); - if (status < 0) - { - return status; - } - pos += status; - } - - /* 68HC12 dbcc/ibcc/tbcc operands. */ - if ((format & M6812_OP_REG) && (format & M6811_OP_JUMP_REL)) - { - status = read_memory (memaddr + pos, &buffer[0], 2, info); - if (status != 0) - { - return status; - } - (*info->fprintf_func) (info->stream, "%s,", - reg_src_table[buffer[0] & 0x07]); - sval = buffer[1] & 0x0ff; - if (buffer[0] & 0x10) - sval |= 0xff00; - - pos += 2; - (*info->print_address_func) (memaddr + pos + sval, info); - format &= ~(M6812_OP_REG | M6811_OP_JUMP_REL); - } - else if (format & (M6812_OP_REG | M6812_OP_REG_2)) - { - status = read_memory (memaddr + pos, &buffer[0], 1, info); - if (status != 0) - { - return status; - } - - pos++; - (*info->fprintf_func) (info->stream, "%s,%s", - reg_src_table[(buffer[0] >> 4) & 7], - reg_dst_table[(buffer[0] & 7)]); - } - - /* M6811_OP_BITMASK and M6811_OP_JUMP_REL must be treated separately - and in that order. The brset/brclr insn have a bitmask and then - a relative branch offset. */ - if (format & M6811_OP_BITMASK) - { - status = read_memory (memaddr + pos, &buffer[0], 1, info); - if (status != 0) - { - return status; - } - pos++; - (*info->fprintf_func) (info->stream, " #$%02x%s", - buffer[0] & 0x0FF, - (format & M6811_OP_JUMP_REL ? " " : "")); - format &= ~M6811_OP_BITMASK; - } - if (format & M6811_OP_JUMP_REL) - { - int val; - - status = read_memory (memaddr + pos, &buffer[0], 1, info); - if (status != 0) - { - return status; - } - - pos++; - val = (buffer[0] & 0x80) ? buffer[0] | 0xFFFFFF00 : buffer[0]; - (*info->print_address_func) (memaddr + pos + val, info); - format &= ~M6811_OP_JUMP_REL; - } - else if (format & M6812_OP_JUMP_REL16) - { - int val; - - status = read_memory (memaddr + pos, &buffer[0], 2, info); - if (status != 0) - { - return status; - } - - pos += 2; - val = ((buffer[0] << 8) | (buffer[1] & 0x0FF)); - if (val & 0x8000) - val |= 0xffff0000; - - (*info->print_address_func) (memaddr + pos + val, info); - format &= ~M6812_OP_JUMP_REL16; - } - if (format & (M6811_OP_IMM16 | M6811_OP_IND16)) - { - int val; - - status = read_memory (memaddr + pos + offset, &buffer[0], 2, info); - if (status != 0) - { - return status; - } - if (format & M6812_OP_IDX_P2) - offset = -2; - else - offset = 0; - pos += 2; - - val = ((buffer[0] << 8) | (buffer[1] & 0x0FF)); - val &= 0x0FFFF; - if (format & M6811_OP_IMM16) - { - format &= ~M6811_OP_IMM16; - (*info->fprintf_func) (info->stream, "#"); - } - else - format &= ~M6811_OP_IND16; - - (*info->print_address_func) (val, info); - } - - if (format & M6812_OP_IDX_P2) - { - (*info->fprintf_func) (info->stream, ", "); - status = print_indexed_operand (memaddr + pos + offset, info, 1); - if (status < 0) - return status; - pos += status; - } - - if (format & M6812_OP_IND16_P2) - { - int val; - - (*info->fprintf_func) (info->stream, ", "); - - status = read_memory (memaddr + pos + offset, &buffer[0], 2, info); - if (status != 0) - { - return status; - } - pos += 2; - - val = ((buffer[0] << 8) | (buffer[1] & 0x0FF)); - val &= 0x0FFFF; - (*info->print_address_func) (val, info); - } - -#ifdef DEBUG - /* Consistency check. 'format' must be 0, so that we have handled - all formats; and the computed size of the insn must match the - opcode table content. */ - if (format & ~(M6811_OP_PAGE4 | M6811_OP_PAGE3 | M6811_OP_PAGE2)) - { - (*info->fprintf_func) (info->stream, "; Error, format: %x", format); - } - if (pos != opcode->size) - { - (*info->fprintf_func) (info->stream, "; Error, size: %d expect %d", - pos, opcode->size); - } -#endif - return pos; - } - - /* Opcode not recognized. */ - if (format == M6811_OP_PAGE2 && arch & cpu6812 - && ((code >= 0x30 && code <= 0x39) || (code >= 0x40 && code <= 0xff))) - (*info->fprintf_func) (info->stream, "trap\t#%d", code & 0x0ff); - - else if (format == M6811_OP_PAGE2) - (*info->fprintf_func) (info->stream, ".byte\t0x%02x, 0x%02x", - M6811_OPCODE_PAGE2, code); - else if (format == M6811_OP_PAGE3) - (*info->fprintf_func) (info->stream, ".byte\t0x%02x, 0x%02x", - M6811_OPCODE_PAGE3, code); - else if (format == M6811_OP_PAGE4) - (*info->fprintf_func) (info->stream, ".byte\t0x%02x, 0x%02x", - M6811_OPCODE_PAGE4, code); - else - (*info->fprintf_func) (info->stream, ".byte\t0x%02x", code); - - return pos; -} - -/* Disassemble one instruction at address 'memaddr'. Returns the number - of bytes used by that instruction. */ -int -print_insn_m68hc11 (memaddr, info) - bfd_vma memaddr; - struct disassemble_info *info; -{ - return print_insn (memaddr, info, cpu6811); -} - -int -print_insn_m68hc12 (memaddr, info) - bfd_vma memaddr; - struct disassemble_info *info; -{ - return print_insn (memaddr, info, cpu6812); -} |