mirror of
https://github.com/ksherlock/mpw.git
synced 2024-11-27 02:49:31 +00:00
309 lines
6.3 KiB
C++
309 lines
6.3 KiB
C++
/*
|
|
* Copyright (c) 2013, Kelvin W Sherlock
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#include <cstdio>
|
|
#include <cstdint>
|
|
#include <cassert>
|
|
#include <cctype>
|
|
|
|
#include <string>
|
|
|
|
#include <CoreServices/CoreServices.h>
|
|
|
|
#include <cpu/defs.h>
|
|
#include <cpu/fmem.h>
|
|
#include <cpu/CpuModule.h>
|
|
|
|
#include <macos/traps.h>
|
|
#include <macos/sysequ.h>
|
|
|
|
char strings[4][256];
|
|
|
|
const uint8_t *Memory = NULL;
|
|
uint32_t MemorySize = 0;
|
|
|
|
|
|
void ToolBox(uint32_t pc, uint16_t trap)
|
|
{
|
|
const char *name;
|
|
|
|
name = TrapName(trap);
|
|
|
|
if (name)
|
|
{
|
|
printf("$%08X %-51s ; %04X\n", pc, name, trap);
|
|
}
|
|
else
|
|
{
|
|
printf("$%08X Tool #$%04X ; %04X\n", pc, trap, trap);
|
|
}
|
|
}
|
|
|
|
void help()
|
|
{
|
|
|
|
}
|
|
|
|
|
|
void code0(uint32_t data_size)
|
|
{
|
|
// dump the code 0 jump table.
|
|
|
|
uint32_t offset = 0;
|
|
uint32_t pc;
|
|
uint32_t size;
|
|
printf("Above A5: $%08X\n", memoryReadLong(0));
|
|
printf("Below A5: $%08X\n", memoryReadLong(4));
|
|
printf("Jump Table Size: $%08X\n", size = memoryReadLong(8));
|
|
printf("Jump Table Offset: $%08X\n", pc = memoryReadLong(12)); // aka CurJTOffset. should be 32.
|
|
|
|
offset = 16;
|
|
|
|
bool longA5 = false;
|
|
while (offset < data_size)
|
|
{
|
|
|
|
if (longA5)
|
|
{
|
|
uint16_t segment = memoryReadWord(offset);
|
|
uint32_t segOffset = memoryReadLong(offset + 4);
|
|
|
|
if (memoryReadWord(offset + 2) == 0xA9F0)
|
|
{
|
|
printf("$%08X %04X : %08X\n", pc + 2, segment, segOffset);
|
|
}
|
|
else
|
|
{
|
|
printf("$%08X ???\n", pc + 2);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
uint16_t data[4];
|
|
for (unsigned i = 0; i < 4; ++i)
|
|
data[i] = memoryReadWord(offset + 2 * i);
|
|
|
|
if (data[1] == 0xffff)
|
|
{
|
|
longA5 = true;
|
|
printf("--------\n");
|
|
}
|
|
else if (data[1] == 0x3F3C && data[3] == 0xA9F0)
|
|
{
|
|
uint16_t segOffset = data[0];
|
|
uint16_t segment = data[2];
|
|
|
|
// pc +2 since the first byte is the offset, not code.
|
|
printf("$%08X %04X : %04X\n", pc + 2, segment, segOffset);
|
|
}
|
|
else
|
|
{
|
|
printf("$%08X ???\n", pc + 2);
|
|
}
|
|
}
|
|
offset += 8;
|
|
pc += 8;
|
|
}
|
|
|
|
printf("\n\n");
|
|
}
|
|
|
|
inline char *cc2(uint16_t value, char out[3])
|
|
{
|
|
uint8_t tmp;
|
|
|
|
tmp = (value >> 8) & 0xff;
|
|
if (tmp & 0x80 || !isprint(tmp)) out[0] = '.';
|
|
else out[0] = tmp;
|
|
|
|
tmp = (value >> 0) & 0xff;
|
|
if (tmp & 0x80 || !isprint(tmp)) out[1] = '.';
|
|
else out[1] = tmp;
|
|
|
|
out[2] = 0;
|
|
return out;
|
|
}
|
|
|
|
void disasm(const char *name, int segment, uint32_t data_size)
|
|
{
|
|
|
|
if (name && *name) printf("segment %d - %s\n", segment, name);
|
|
else printf("segment %d\n", segment);
|
|
|
|
uint32_t pc = 0;
|
|
|
|
|
|
uint16_t prevOP = 0;
|
|
|
|
while (pc < data_size)
|
|
{
|
|
for (unsigned j = 0; j < 4; ++j) strings[j][0] = 0;
|
|
|
|
uint16_t op = memoryReadWord(pc);
|
|
|
|
if (prevOP == 0x4E75 || prevOP == 0x4ED0 || prevOP == 0x4E74)
|
|
{
|
|
if (op > 0x8000)
|
|
{
|
|
// RTS followed by debug symbol.
|
|
unsigned len = (op >> 8) - 0x80;
|
|
|
|
std::string s;
|
|
s.reserve(len);
|
|
pc += 1; // skip the length byte.
|
|
for (unsigned i = 0; i < len; ++ i)
|
|
{
|
|
s.push_back(memoryReadByte(pc++));
|
|
}
|
|
|
|
printf("%s\n", s.c_str());
|
|
pc = (pc + 1) & ~0x01;
|
|
|
|
#if 0
|
|
if (memoryReadWord(pc) == 0x0000) pc += 2;
|
|
#else
|
|
// treat the remainder as data until 4E56. [Link A6,#]
|
|
while (pc < data_size)
|
|
{
|
|
char tmp[3];
|
|
uint16_t data = memoryReadWord(pc);
|
|
if (data == 0x4e56) break;
|
|
printf("$%08X $%04X ; '%s'\n", pc, data, cc2(data, tmp));
|
|
pc += 2;
|
|
}
|
|
#endif
|
|
printf("\n");
|
|
|
|
prevOP = 0;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if ((op & 0xf000) == 0xa000)
|
|
{
|
|
// tool call!
|
|
|
|
ToolBox(pc, op);
|
|
pc += 2;
|
|
prevOP = op;
|
|
continue;
|
|
}
|
|
|
|
pc = cpuDisOpcode(pc, strings[0], strings[1], strings[2], strings[3]);
|
|
|
|
// address, data, instruction, operand
|
|
printf("%s %-10s %-40s ; %s\n", strings[0], strings[2], strings[3], strings[1]);
|
|
|
|
prevOP = op;
|
|
}
|
|
|
|
printf("\n\n");
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
|
|
ResFileRefNum refNum;
|
|
FSRef ref;
|
|
Handle h;
|
|
|
|
if (argc != 2)
|
|
{
|
|
help();
|
|
return -1;
|
|
}
|
|
|
|
assert( FSPathMakeRef( (const UInt8 *)argv[1], &ref, NULL) == noErr);
|
|
|
|
refNum = FSOpenResFile(&ref, fsRdPerm);
|
|
assert(refNum != -1 );
|
|
//UseResFile(refNum);
|
|
|
|
|
|
cpuSetModel(3, 0); // 68030
|
|
|
|
int l = Count1Resources('CODE');
|
|
|
|
for (int i = 0; i < l; ++i)
|
|
{
|
|
ResAttributes attr;
|
|
ResID resID;
|
|
ResType resType;
|
|
Str255 name;
|
|
std::string cname;
|
|
|
|
h = Get1IndResource('CODE', i + 1);
|
|
if (!h) continue;
|
|
HLock(h);
|
|
|
|
|
|
attr = GetResAttrs(h);
|
|
GetResInfo(h, &resID, &resType, name);
|
|
|
|
// name is a p-string.
|
|
if (name[0])
|
|
{
|
|
int l = name[0];
|
|
cname.assign(name + 1, name + 1 + l);
|
|
}
|
|
|
|
uint32_t size = GetHandleSize(h);
|
|
uint8_t *data = *( uint8_t **)h;
|
|
|
|
if (resID == 0)
|
|
{
|
|
memorySetMemory(data, size);
|
|
code0(size);
|
|
}
|
|
else
|
|
{
|
|
// near model uses a $4-byte header.
|
|
// far model uses a $28-byte header.
|
|
if (data[0] == 0xff && data[1] == 0xff)
|
|
{
|
|
data += 0x28;
|
|
size -= 0x28;
|
|
}
|
|
else
|
|
{
|
|
data += 0x04;
|
|
size -= 0x04;
|
|
}
|
|
memorySetMemory(data, size);
|
|
disasm(cname.c_str(), resID, size);
|
|
}
|
|
|
|
memorySetMemory(nullptr, 0);
|
|
|
|
ReleaseResource(h);
|
|
}
|
|
|
|
|
|
CloseResFile(refNum);
|
|
|
|
return 0;
|
|
}
|