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authorStephane Carrez <stcarrez@nerim.fr>2002-08-13 19:01:25 +0000
committerStephane Carrez <stcarrez@nerim.fr>2002-08-13 19:01:25 +0000
commit94777b37cd80335eb3ab847a27c66aee4237f3d1 (patch)
treea06d055ed138a78d73db3e02c779aca3e4dd6c44 /opcodes/m68hc11-dis.c
parentd38fddb7b0d9ccfc7f5953bf902e7c574089aa5a (diff)
downloadgdb-94777b37cd80335eb3ab847a27c66aee4237f3d1.tar.gz
* m68hc11-dis.c (print_insn): Take into account 68HC12 memory
banks and fix disassembling of call instruction. (print_indexed_operand): New param to tell whether it was an indirect addressing operand (for disassembling call).
Diffstat (limited to 'opcodes/m68hc11-dis.c')
-rw-r--r--opcodes/m68hc11-dis.c86
1 files changed, 79 insertions, 7 deletions
diff --git a/opcodes/m68hc11-dis.c b/opcodes/m68hc11-dis.c
index bb0cc207d4d..c721d16e0c4 100644
--- a/opcodes/m68hc11-dis.c
+++ b/opcodes/m68hc11-dis.c
@@ -1,6 +1,6 @@
/* m68hc11-dis.c -- Motorola 68HC11 & 68HC12 disassembly
- Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
- Written by Stephane Carrez (stcarrez@worldnet.fr)
+ Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Written by Stephane Carrez (stcarrez@nerim.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
@@ -40,7 +40,7 @@ static const char *const reg_dst_table[] = {
static int read_memory
PARAMS ((bfd_vma, bfd_byte *, int, struct disassemble_info *));
static int print_indexed_operand
- PARAMS ((bfd_vma, struct disassemble_info *, int));
+ PARAMS ((bfd_vma, struct disassemble_info *, int*, int));
static int print_insn
PARAMS ((bfd_vma, struct disassemble_info *, int));
@@ -68,9 +68,10 @@ read_memory (memaddr, buffer, size, info)
/* 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)
+print_indexed_operand (memaddr, info, indirect, mov_insn)
bfd_vma memaddr;
struct disassemble_info *info;
+ int *indirect;
int mov_insn;
{
bfd_byte buffer[4];
@@ -79,6 +80,9 @@ print_indexed_operand (memaddr, info, mov_insn)
short sval;
int pos = 1;
+ if (indirect)
+ *indirect = 0;
+
status = read_memory (memaddr, &buffer[0], 1, info);
if (status != 0)
{
@@ -140,6 +144,8 @@ print_indexed_operand (memaddr, info, mov_insn)
sval = ((buffer[0] << 8) | (buffer[1] & 0x0FF));
(*info->fprintf_func) (info->stream, "[%u,%s]",
sval & 0x0ffff, reg_name[reg]);
+ if (indirect)
+ *indirect = 1;
}
else if ((buffer[0] & 0x4) == 0)
{
@@ -189,6 +195,8 @@ print_indexed_operand (memaddr, info, mov_insn)
case 3:
default:
(*info->fprintf_func) (info->stream, "[D,%s]", reg_name[reg]);
+ if (indirect)
+ *indirect = 1;
break;
}
}
@@ -440,12 +448,19 @@ print_insn (memaddr, info, arch)
/* Analyze the 68HC12 indexed byte. */
if (format & M6812_INDEXED_FLAGS)
{
- status = print_indexed_operand (memaddr + pos, info, 0);
+ int indirect;
+
+ status = print_indexed_operand (memaddr + pos, info, &indirect, 0);
if (status < 0)
{
return status;
}
pos += status;
+
+ /* The indirect addressing mode of the call instruction does
+ not need the page code. */
+ if ((format & M6812_OP_PAGE) && indirect)
+ format &= ~M6812_OP_PAGE;
}
/* 68HC12 dbcc/ibcc/tbcc operands. */
@@ -532,6 +547,8 @@ print_insn (memaddr, info, arch)
if (format & (M6811_OP_IMM16 | M6811_OP_IND16))
{
int val;
+ bfd_vma addr;
+ unsigned page = 0;
status = read_memory (memaddr + pos + offset, &buffer[0], 2, info);
if (status != 0)
@@ -546,6 +563,38 @@ print_insn (memaddr, info, arch)
val = ((buffer[0] << 8) | (buffer[1] & 0x0FF));
val &= 0x0FFFF;
+ addr = val;
+ if (format & M6812_OP_PAGE)
+ {
+ status = read_memory (memaddr + pos + offset, buffer, 1, info);
+ if (status != 0)
+ return status;
+
+ page = (unsigned) buffer[0];
+ if (addr >= M68HC12_BANK_BASE && addr < 0x0c000)
+ addr = ((val - M68HC12_BANK_BASE)
+ | (page << M68HC12_BANK_SHIFT))
+ + M68HC12_BANK_VIRT;
+ }
+ else if ((arch & cpu6812)
+ && addr >= M68HC12_BANK_BASE && addr < 0x0c000)
+ {
+ int cur_page;
+ bfd_vma vaddr;
+
+ if (memaddr >= M68HC12_BANK_VIRT)
+ cur_page = ((memaddr - M68HC12_BANK_VIRT)
+ >> M68HC12_BANK_SHIFT);
+ else
+ cur_page = 0;
+
+ vaddr = ((addr - M68HC12_BANK_BASE)
+ + (cur_page << M68HC12_BANK_SHIFT))
+ + M68HC12_BANK_VIRT;
+ if (!info->symbol_at_address_func (addr, info)
+ && info->symbol_at_address_func (vaddr, info))
+ addr = vaddr;
+ }
if (format & M6811_OP_IMM16)
{
format &= ~M6811_OP_IMM16;
@@ -554,13 +603,21 @@ print_insn (memaddr, info, arch)
else
format &= ~M6811_OP_IND16;
- (*info->print_address_func) (val, info);
+ (*info->print_address_func) (addr, info);
+ if (format & M6812_OP_PAGE)
+ {
+ (* info->fprintf_func) (info->stream, " {");
+ (* info->print_address_func) (val, info);
+ (* info->fprintf_func) (info->stream, ", %d}", page);
+ format &= ~M6812_OP_PAGE;
+ pos += 1;
+ }
}
if (format & M6812_OP_IDX_P2)
{
(*info->fprintf_func) (info->stream, ", ");
- status = print_indexed_operand (memaddr + pos + offset, info, 1);
+ status = print_indexed_operand (memaddr + pos + offset, info, 0, 1);
if (status < 0)
return status;
pos += status;
@@ -584,6 +641,21 @@ print_insn (memaddr, info, arch)
(*info->print_address_func) (val, info);
}
+ if (format & M6812_OP_PAGE)
+ {
+ int val;
+
+ status = read_memory (memaddr + pos + offset, &buffer[0], 1, info);
+ if (status != 0)
+ {
+ return status;
+ }
+ pos += 1;
+
+ val = buffer[0] & 0x0ff;
+ (*info->fprintf_func) (info->stream, ", %d", val);
+ }
+
#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