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uae-wii/src/debug.c

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/*
* UAE - The Un*x Amiga Emulator
*
* Debugger
*
* (c) 1995 Bernd Schmidt
*
*/
#include "sysconfig.h"
#include "sysdeps.h"
#include <ctype.h>
#include <signal.h>
#include "options.h"
#include "uae.h"
#include "memory.h"
#include "custom.h"
#include "newcpu.h"
#include "cpu_prefetch.h"
#include "debug.h"
#include "cia.h"
#include "xwin.h"
#include "identify.h"
#include "disk.h"
#include "savestate.h"
#include "autoconf.h"
#include "filesys.h"
#include "akiko.h"
#include "inputdevice.h"
#include "audio.h"
static int debugger_active;
static uaecptr skipaddr_start, skipaddr_end;
static int skipaddr_doskip;
static uae_u32 skipins;
static int do_skip;
#ifdef SAVESTATE
static int debug_rewind;
#endif
static int memwatch_enabled, memwatch_triggered;
int debugging;
int exception_debugging;
int debug_copper;
int debug_sprite_mask = 0xff;
static uaecptr debug_copper_pc;
extern int audio_channel_mask;
static FILE *logfile;
#ifndef _WIN32
#define console_out printf
#define console_flush() fflush( stdout )
#define console_get( input, len ) fgets( input, len, stdin )
#endif
#define MAX_HIST 100
unsigned int firsthist = 0;
unsigned int lasthist = 0;
static struct regstruct history[MAX_HIST];
void activate_debugger (void)
{
if (debuggable ()) {
if (is_fullscreen ()) {
toggle_fullscreen ();
if (is_fullscreen ()) {
write_log ("Cannot activate debugger in full-screen mode\n");
return;
}
}
if (logfile)
fclose (logfile);
logfile = 0;
do_skip = 0;
if (debugger_active)
return;
debugger_active = 1;
set_special (&regs, SPCFLAG_BRK);
debugging = 1;
}
}
static const char help[] = {
" HELP for UAE Debugger\n"
" -----------------------\n\n"
" g [<address>] Start execution at the current address or <address>\n"
" c Dump state of the CIA, disk drives and custom registers\n"
" r Dump state of the CPU\n"
" m <address> [<lines>] Memory dump starting at <address>\n"
" d <address> [<lines>] Disassembly starting at <address>\n"
" t [instructions] Step one or more instructions\n"
" z Step through one instruction - useful for JSR, DBRA etc\n"
" f Step forward until PC in RAM (\"boot block finder\")\n"
" f <address> Add/remove breakpoint\n"
" fi Step forward until PC points to RTS/RTD or RTE\n"
" fi <opcode> Step forward until PC points to <opcode>\n"
" fl List breakpoints\n"
" fd Remove all breakpoints\n"
" f <addr1> <addr2> Step forward until <addr1> <= PC <= <addr2>\n"
" e [<addr>] Dump contents of all custom registers\n"
" i [<addr>] Dump contents of interrupt and trap vectors\n"
" o <0-2|addr> [<lines>]View memory as Copper instructions\n"
" od Enable/disable Copper vpos/hpos tracing\n"
" ot Copper single step trace\n"
" ob <addr> Copper breakpoint\n"
" O Display bitplane offsets\n"
" O <plane> <offset> Offset a bitplane\n"
" H[H] <cnt> Show PC history (HH=full CPU info) <cnt> instructions\n"
" C <value> Search for values like energy or lifes in games\n"
" W <address> <value> Write into Amiga memory\n"
" w <num> <address> <length> <R/W/RW> [<value>]\n"
" Add/remove memory watchpoints\n"
" wd Enable illegal access logger\n"
" S <file> <addr> <n> Save a block of Amiga memory\n"
" s <string>/<values> [<addr>] [<length>]\n"
" Search for string/bytes\n"
" T Show exec tasks and their PCs\n"
" h,? Show this help page\n"
#ifdef SAVESTATE
" b Step to previous state capture position\n"
#endif
" am <channel mask> Enable or disable audio channels\n"
" sm <sprite mask> Enable or disable sprites\n"
" di <mode> [<track>] Break on disk access. R=DMA read,W=write,RW=both,P=PIO\n"
" Also enables extended disk logging\n"
" q Quit the emulator. You don't want to use this command.\n\n"
};
static void debug_help (void)
{
console_out (help);
}
static void ignore_ws (const char **c)
{
while (**c && isspace (**c))
(*c)++;
}
static uae_u32 readint (const char **c);
static uae_u32 readhex (const char **c)
{
uae_u32 val = 0;
char nc;
ignore_ws (c);
if (**c == '!' || **c == '_') {
(*c)++;
return readint (c);
}
while (isxdigit (nc = **c)) {
(*c)++;
val *= 16;
nc = toupper (nc);
if (isdigit (nc)) {
val += nc - '0';
} else {
val += nc - 'A' + 10;
}
}
return val;
}
static uae_u32 readint (const char **c)
{
uae_u32 val = 0;
char nc;
int sign = 1;
ignore_ws (c);
if (**c == '$') {
(*c)++;
return readhex (c);
}
if (**c == '0' && toupper ((*c)[1]) == 'X') {
(*c) += 2;
return readhex (c);
}
if (**c == '-') {
sign = 1;
(*c)++;
}
while (isdigit (nc = **c)) {
(*c)++;
val *= 10;
val += nc - '0';
}
return val * sign;
}
static char next_char (const char **c)
{
ignore_ws (c);
return *(*c)++;
}
static char peek_next_char (const char **c)
{
const char *pc = *c;
return pc[1];
}
static int more_params (const char **c)
{
ignore_ws (c);
return (**c) != 0;
}
static int next_string (const char **c, char *out, unsigned int max, int forceupper)
{
char *p = out;
*p = 0;
while (**c != 0) {
if (**c == 32) {
ignore_ws (c);
return strlen (out);
}
*p = next_char (c);
if (forceupper)
*p = toupper (*p);
*++p = 0;
max--;
if (max <= 1)
break;
}
return strlen (out);
}
static uae_u32 nextaddr (uae_u32 addr)
{
if (addr == 0xffffffff) {
if (currprefs.bogomem_size)
return 0xc00000 + currprefs.bogomem_size;
if (currprefs.fastmem_size)
return 0x200000 + currprefs.fastmem_size;
return currprefs.chipmem_size;
}
if (addr == currprefs.chipmem_size) {
if (currprefs.fastmem_size)
return 0x200000;
else if (currprefs.bogomem_size)
return 0xc00000;
return 0xffffffff;
}
if (addr == 0x200000 + currprefs.fastmem_size) {
if (currprefs.bogomem_size)
return 0xc00000;
return 0xffffffff;
}
if (addr == 0xc00000 + currprefs.bogomem_size)
return 0xffffffff;
return addr + 1;
}
static void dumpmem (uaecptr addr, uaecptr *nxmem, unsigned int lines)
{
char line[80];
int cols = 8;
for (;lines--;) {
int i;
sprintf (line, "%08x ", addr);
for (i = 0; i < cols; i++) {
uae_u8 b1 = get_byte (addr + 0);
uae_u8 b2 = get_byte (addr + 1);
addr += 2;
sprintf (line + 9 + i * 5, "%02x%02x ", b1, b2);
line[9 + cols * 5 + 1 + i * 2 + 0] = b1 >= 32 && b1 < 127 ? b1 : '.';
line[9 + cols * 5 + 1 + i * 2 + 1] = b2 >= 32 && b2 < 127 ? b2 : '.';
}
line[9 + cols * 5] = ' ';
line[9 + cols * 5 + 1 + 2 * cols] = 0;
console_out ("%s", line);
console_out ("\n");
}
*nxmem = addr;
}
static void dump_custom_regs (void)
{
unsigned int len;
unsigned int i, j, end;
uae_u8 *p1, *p2, *p3, *p4;
p1 = p2 = save_custom (&len, 0, 1);
p1 += 4; // skip chipset type
for (i = 0; i < 4; i++) {
p4 = p1 + 0xa0 + i * 16;
p3 = save_audio (i, &len, 0);
p4[0] = p3[12];
p4[1] = p3[13];
p4[2] = p3[14];
p4[3] = p3[15];
p4[4] = p3[4];
p4[5] = p3[5];
p4[6] = p3[8];
p4[7] = p3[9];
p4[8] = 0;
p4[9] = p3[1];
p4[10] = p3[10];
p4[11] = p3[11];
free (p3);
}
end = 0;
while (custd[end].name)
end++;
end++;
end /= 2;
for (i = 0; i < end; i++) {
uae_u16 v1, v2;
int addr1, addr2;
j = end + i;
addr1 = custd[i].adr & 0x1ff;
addr2 = custd[j].adr & 0x1ff;
v1 = (p1[addr1 + 0] << 8) | p1[addr1 + 1];
v2 = (p1[addr2 + 0] << 8) | p1[addr2 + 1];
console_out ("%3.3X %s\t%4.4X\t%3.3X %s\t%4.4X\n",
addr1, custd[i].name, v1,
addr2, custd[j].name, v2);
}
free (p2);
}
static void dump_vectors (uaecptr addr)
{
unsigned int i = 0, j = 0;
if (addr == 0xffffffff)
addr = regs.vbr;
while (int_labels[i].name || trap_labels[j].name) {
if (int_labels[i].name) {
console_out ("$%08X: %s \t $%08X\t", int_labels[i].adr + addr,
int_labels[i].name, get_long (int_labels[i].adr + (int_labels[i].adr == 4 ? 0 : addr)));
i++;
} else {
console_out ("\t\t\t\t");
}
if (trap_labels[j].name) {
console_out ("$%08X: %s \t $%08X", trap_labels[j].adr + addr,
trap_labels[j].name, get_long (trap_labels[j].adr + addr));
j++;
}
console_out ("\n");
}
}
static void disassemble_wait (uae_u32 insn)
{
unsigned int vp, hp, ve, he, bfd, v_mask, h_mask;
vp = (insn & 0xff000000) >> 24;
hp = (insn & 0x00fe0000) >> 16;
ve = (insn & 0x00007f00) >> 8;
he = (insn & 0x000000fe);
bfd = (insn & 0x00008000) >> 15;
/* bit15 can never be masked out*/
v_mask = vp & (ve | 0x80);
h_mask = hp & he;
if (v_mask > 0) {
console_out ("vpos ");
if (ve != 0x7f) {
console_out ("& 0x%02x ", ve);
}
console_out (">= 0x%02x", v_mask);
}
if (he > 0) {
if (v_mask > 0) {
console_out (" and");
}
console_out (" hpos ");
if (he != 0xfe) {
console_out ("& 0x%02x ", he);
}
console_out (">= 0x%02x", h_mask);
} else {
console_out (", ignore horizontal");
}
console_out (".\n \t; VP %02x, VE %02x; HP %02x, HE %02x; BFD %d\n",
vp, ve, hp, he, bfd);
}
#define NR_COPPER_RECORDS 40000
/* Record copper activity for the debugger. */
struct cop_record
{
unsigned int hpos, vpos;
uaecptr addr;
};
static struct cop_record *cop_record[2];
static unsigned int nr_cop_records[2], curr_cop_set;
void record_copper_reset (void)
{
/* Start a new set of copper records. */
curr_cop_set ^= 1;
nr_cop_records[curr_cop_set] = 0;
}
void record_copper (uaecptr addr, unsigned int hpos, unsigned int vpos)
{
unsigned int t = nr_cop_records[curr_cop_set];
if (!cop_record[0]) {
cop_record[0] = malloc (NR_COPPER_RECORDS * sizeof (struct cop_record));
cop_record[1] = malloc (NR_COPPER_RECORDS * sizeof (struct cop_record));
}
if (t < NR_COPPER_RECORDS) {
cop_record[curr_cop_set][t].addr = addr;
cop_record[curr_cop_set][t].hpos = hpos;
cop_record[curr_cop_set][t].vpos = vpos;
nr_cop_records[curr_cop_set] = t + 1;
}
if (debug_copper & 2) { /* trace */
debug_copper &= ~2;
activate_debugger();
}
if ((debug_copper & 4) && addr >= debug_copper_pc && addr <= debug_copper_pc + 3) {
debug_copper &= ~4;
activate_debugger();
}
}
static int find_copper_record (uaecptr addr, unsigned int *phpos, unsigned int *pvpos)
{
unsigned int s = curr_cop_set ^ 1;
unsigned int t = nr_cop_records[s];
unsigned int i;
for (i = 0; i < t; i++) {
if (cop_record[s][i].addr == addr) {
*phpos = cop_record[s][i].hpos;
*pvpos = cop_record[s][i].vpos;
return 1;
}
}
return 0;
}
/* simple decode copper by Mark Cox */
static void decode_copper_insn (uae_u32 insn, uaecptr addr)
{
uae_u32 insn_type = insn & 0x00010001;
unsigned int hpos, vpos;
char here = ' ';
char record[] = " ";
if (find_copper_record (addr, &hpos, &vpos)) {
sprintf (record, " [%03x %03x]", vpos, hpos);
}
if (get_copper_address(-1) >= addr && get_copper_address(-1) <= addr + 3)
here = '*';
console_out ("%c%08x: %04x %04x%s\t; ", here, addr, insn >> 16, insn & 0xFFFF, record);
switch (insn_type) {
case 0x00010000: /* WAIT insn */
console_out ("Wait for ");
disassemble_wait (insn);
if (insn == 0xfffffffe)
console_out (" \t; End of Copperlist\n");
break;
case 0x00010001: /* SKIP insn */
console_out ("Skip if ");
disassemble_wait (insn);
break;
case 0x00000000:
case 0x00000001: /* MOVE insn */
{
uae_u32 addr = (insn >> 16) & 0x1fe;
int i = 0;
while (custd[i].name) {
if (custd[i].adr == addr + 0xdff000)
break;
i++;
}
if (custd[i].name)
console_out ("%s := 0x%04x\n", custd[i].name, insn & 0xffff);
else
console_out ("%04x := 0x%04x\n", addr, insn & 0xffff);
}
break;
default:
abort ();
}
}
static uaecptr decode_copperlist (uaecptr address, unsigned int nolines)
{
uae_u32 insn;
while (nolines-- > 0) {
insn = get_long (address);
decode_copper_insn (insn, address);
address += 4;
}
return address;
/* You may wonder why I don't stop this at the end of the copperlist?
* Well, often nice things are hidden at the end and it is debatable the actual
* values that mean the end of the copperlist */
}
static int copper_debugger (const char **c)
{
static uaecptr nxcopper;
uae_u32 maddr;
unsigned int lines;
if (**c == 'd') {
next_char (c);
if (debug_copper)
debug_copper = 0;
else
debug_copper = 1;
console_out ("Copper debugger %s.\n", debug_copper ? "enabled" : "disabled");
} else if (**c == 't') {
debug_copper = 1|2;
return 1;
} else if (**c == 'b') {
(*c)++;
debug_copper = 1|4;
if (more_params (c)) {
debug_copper_pc = readhex (c);
console_out ("Copper breakpoint @0x%8.8x\n", debug_copper_pc);
} else {
debug_copper &= ~4;
}
} else {
if (more_params (c)) {
maddr = readhex (c);
if (maddr == 1 || maddr == 2)
maddr = get_copper_address (maddr);
else if (maddr == 0)
maddr = get_copper_address (-1);
} else
maddr = nxcopper;
if (more_params (c))
lines = readhex (c);
else
lines = 20;
nxcopper = decode_copperlist (maddr, lines);
}
return 0;
}
/* cheat-search by Holger Jakob */
static void cheatsearch (const char **c)
{
uae_u8 *p = get_real_address (0);
static uae_u32 *vlist = NULL;
uae_u32 ptr;
uae_u32 val = 0;
uae_u32 type = 0; /* not yet */
uae_u32 count = 0;
uae_u32 fcount = 0;
uae_u32 full = 0;
ignore_ws (c);
val = readhex (c);
if (vlist == NULL) {
vlist = malloc (256 * 4);
if (vlist != 0) {
for (count = 0; count < 255; count++)
vlist[count] = 0;
count = 0;
for (ptr = 0; ptr < allocated_chipmem - 40; ptr += 2, p += 2) {
if (ptr >= 0x438 && p[3] == (val & 0xff)
&& p[2] == (val >> 8 & 0xff)
&& p[1] == (val >> 16 & 0xff)
&& p[0] == (val >> 24 & 0xff))
{
if (count < 255) {
vlist[count++]=ptr;
console_out ("%08x: %x%x%x%x\n",ptr,p[0],p[1],p[2],p[3]);
} else
full = 1;
}
}
console_out ("Found %d possible addresses with %d\n",count,val);
console_out ("Now continue with 'g' and use 'C' with a different value\n");
}
} else {
for (count = 0; count<255; count++) {
if (p[vlist[count]+3] == (val & 0xff)
&& p[vlist[count]+2] == (val>>8 & 0xff)
&& p[vlist[count]+1] == (val>>16 & 0xff)
&& p[vlist[count]] == (val>>24 & 0xff))
{
fcount++;
console_out ("%08x: %x%x%x%x\n", vlist[count], p[vlist[count]],
p[vlist[count]+1], p[vlist[count]+2], p[vlist[count]+3]);
}
}
console_out ("%d hits of %d found\n",fcount,val);
free (vlist);
vlist = NULL;
}
}
#define BREAKPOINT_TOTAL 8
struct breakpoint_node {
uaecptr addr;
int enabled;
};
static struct breakpoint_node bpnodes[BREAKPOINT_TOTAL];
static addrbank **debug_mem_banks;
#define MEMWATCH_TOTAL 4
struct memwatch_node {
uaecptr addr;
unsigned int size;
int rw;
uae_u32 val;
int val_enabled;
uae_u32 modval;
int modval_written;
};
static struct memwatch_node mwnodes[MEMWATCH_TOTAL];
static struct memwatch_node mwhit;
static uae_u8 *illgdebug;
static int illgdebug_break;
extern int cdtv_enabled, cd32_enabled;
static void illg_init (void)
{
unsigned int i;
free (illgdebug);
illgdebug = xmalloc (0x1000000);
if (!illgdebug)
return;
memset (illgdebug, 3, 0x1000000);
memset (illgdebug, 0, currprefs.chipmem_size);
memset (illgdebug + 0xc00000, 0, currprefs.bogomem_size);
memset (illgdebug + 0x200000, 0, currprefs.fastmem_size);
i = 0;
while (custd[i].name) {
int rw = custd[i].rw;
illgdebug[custd[i].adr] = rw;
illgdebug[custd[i].adr + 1] = rw;
i++;
}
for (i = 0; i < 16; i++) { /* CIAs */
if (i == 11)
continue;
illgdebug[0xbfe001 + i * 0x100] = 0;
illgdebug[0xbfd000 + i * 0x100] = 0;
}
memset (illgdebug + 0xf80000, 1, 512 * 1024); /* KS ROM */
memset (illgdebug + 0xdc0000, 0, 0x3f); /* clock */
#ifdef CDTV
if (cdtv_enabled) {
memset (illgdebug + 0xf00000, 1, 256 * 1024); /* CDTV ext ROM */
memset (illgdebug + 0xdc8000, 0, 4096); /* CDTV batt RAM */
}
#endif
#ifdef CD32
if (cd32_enabled) {
memset (illgdebug + AKIKO_BASE, 0, AKIKO_BASE_END - AKIKO_BASE);
memset (illgdebug + 0xe00000, 1, 512 * 1024); /* CD32 ext ROM */
}
#endif
if (cloanto_rom)
memset (illgdebug + 0xe00000, 1, 512 * 1024);
#ifdef FILESYS
if (nr_units (currprefs.mountinfo) > 0) /* filesys "rom" */
memset (illgdebug + RTAREA_BASE, 1, 0x10000);
#endif
}
/* add special custom register check here */
static void illg_debug_check (uaecptr addr, int rw, int size, uae_u32 val)
{
return;
}
static void illg_debug_do (uaecptr addr, int rw, int size, uae_u32 val)
{
uae_u8 mask;
uae_u32 pc = m68k_getpc (&regs);
char rws = rw ? 'W' : 'R';
int i;
for (i = size - 1; i >= 0; i--) {
uae_u8 v = val >> (i * 8);
uae_u32 ad = addr + i;
if (ad >= 0x1000000)
mask = 3;
else
mask = illgdebug[ad];
if (!mask)
continue;
if (mask & 0x80) {
illg_debug_check (ad, rw, size, val);
} else if ((mask & 3) == 3) {
if (rw)
write_log ("RW: %8.8X=%2.2X %c PC=%8.8X\n", ad, v, rws, pc);
else
write_log ("RW: %8.8X %c PC=%8.8X\n", ad, rws, pc);
if (illgdebug_break)
activate_debugger ();
} else if ((mask & 1) && rw) {
write_log ("RO: %8.8X=%2.2X %c PC=%8.8X\n", ad, v, rws, pc);
if (illgdebug_break)
activate_debugger ();
} else if ((mask & 2) && !rw) {
write_log ("WO: %8.8X %c PC=%8.8X\n", ad, rws, pc);
if (illgdebug_break)
activate_debugger ();
}
}
}
STATIC_INLINE uae_u8 debug_mem_off (uaecptr addr)
{
return (munge24 (addr) >> 16) & 0xff;
}
static void memwatch_func (uaecptr addr, int rw, int size, uae_u32 val)
{
int i, brk;
if (illgdebug)
illg_debug_do (addr, rw, size, val);
addr = munge24 (addr);
for (i = 0; i < MEMWATCH_TOTAL; i++) {
uaecptr addr2 = mwnodes[i].addr;
uaecptr addr3 = addr2 + mwnodes[i].size;
int rw2 = mwnodes[i].rw;
brk = 0;
if (mwnodes[i].size == 0)
continue;
if (mwnodes[i].val_enabled && mwnodes[i].val != val)
continue;
if (rw != rw2 && rw2 < 2)
continue;
if (addr >= addr2 && addr < addr3)
brk = 1;
if (!brk && size == 2 && (addr + 1 >= addr2 && addr + 1 < addr3))
brk = 1;
if (!brk && size == 4 && ((addr + 2 >= addr2 && addr + 2 < addr3) || (addr + 3 >= addr2 && addr + 3 < addr3)))
brk = 1;
if (brk && mwnodes[i].modval_written) {
if (!rw) {
brk = 0;
} else if (mwnodes[i].modval_written == 1) {
mwnodes[i].modval_written = 2;
mwnodes[i].modval = val;
brk = 0;
} else if (mwnodes[i].modval == val) {
brk = 0;
}
}
if (brk) {
mwhit.addr = addr;
mwhit.rw = rw;
mwhit.size = size;
mwhit.val = 0;
if (mwhit.rw)
mwhit.val = val;
memwatch_triggered = i + 1;
debugging = 1;
set_special (&regs, SPCFLAG_BRK);
break;
}
}
}
static REGPARAM2 uae_u32 debug_lget (uaecptr addr)
{
uae_u8 off = debug_mem_off (addr);
uae_u32 v;
v = debug_mem_banks[off]->lget(addr);
memwatch_func (addr, 0, 4, v);
return v;
}
static REGPARAM2 uae_u32 debug_wget (uaecptr addr)
{
uae_u8 off = debug_mem_off (addr);
uae_u32 v;
v = debug_mem_banks[off]->wget(addr);
memwatch_func (addr, 0, 2, v);
return v;
}
static REGPARAM2 uae_u32 debug_bget (uaecptr addr)
{
uae_u8 off = debug_mem_off (addr);
uae_u32 v;
v = debug_mem_banks[off]->bget(addr);
memwatch_func (addr, 0, 1, v);
return v;
}
static REGPARAM2 void debug_lput (uaecptr addr, uae_u32 v)
{
uae_u8 off = debug_mem_off (addr);
memwatch_func (addr, 1, 4, v);
debug_mem_banks[off]->lput(addr, v);
}
static REGPARAM2 void debug_wput (uaecptr addr, uae_u32 v)
{
uae_u8 off = debug_mem_off (addr);
memwatch_func (addr, 1, 2, v);
debug_mem_banks[off]->wput(addr, v);
}
static REGPARAM2 void debug_bput (uaecptr addr, uae_u32 v)
{
uae_u8 off = debug_mem_off (addr);
memwatch_func (addr, 1, 1, v);
debug_mem_banks[off]->bput(addr, v);
}
static REGPARAM2 int debug_check (uaecptr addr, uae_u32 size)
{
return debug_mem_banks[munge24 (addr) >> 16]->check (addr, size);
}
static REGPARAM2 uae_u8 *debug_xlate (uaecptr addr)
{
return debug_mem_banks[munge24 (addr) >> 16]->xlateaddr (addr);
}
static void deinitialize_memwatch (void)
{
unsigned int i;
if (!memwatch_enabled)
return;
for (i = 0; i < 256; i++) {
addrbank *a1 = debug_mem_banks[i];
addrbank *a2 = mem_banks[i];
memcpy (a2, a1, sizeof (addrbank));
free (a1);
}
free (debug_mem_banks);
debug_mem_banks = 0;
memwatch_enabled = 0;
free (illgdebug);
illgdebug = 0;
}
static int initialize_memwatch (void)
{
unsigned int i;
addrbank *a1, *a2;
if (!currprefs.address_space_24)
return 0;
debug_mem_banks = xmalloc (sizeof (addrbank*) * 256);
for (i = 0; i < 256; i++) {
a1 = debug_mem_banks[i] = xmalloc (sizeof (addrbank));
a2 = mem_banks[i];
memcpy (a1, a2, sizeof (addrbank));
}
for (i = 0; i < 256; i++) {
a2 = mem_banks[i];
a2->bget = debug_bget;
a2->wget = debug_wget;
a2->lget = debug_lget;
a2->bput = debug_bput;
a2->wput = debug_wput;
a2->lput = debug_lput;
a2->check = debug_check;
a2->xlateaddr = debug_xlate;
}
memwatch_enabled = 1;
return 1;
}
static void memwatch_dump (int num)
{
unsigned int i;
const struct memwatch_node *mwn;
for (i = 0; i < MEMWATCH_TOTAL; i++) {
if ((num >= 0 && num == (int)i) || (num < 0)) {
mwn = &mwnodes[i];
if (mwn->size == 0)
continue;
console_out ("%d: %8.8X - %8.8X (%d) %s",
i, mwn->addr, mwn->addr + (mwn->size - 1), mwn->size,
mwn->rw == 0 ? "R" : (mwn->rw == 1 ? "W" : "RW"));
if (mwn->val_enabled)
console_out (" =%X", mwn->val);
if (mwn->modval_written)
console_out (" =M");
console_out ("\n");
}
}
}
static void memwatch (const char **c)
{
int num;
struct memwatch_node *mwn;
char nc;
if (!memwatch_enabled) {
if (!initialize_memwatch ()) {
console_out ("Memwatch breakpoints require 24-bit address space\n");
return;
}
console_out ("Memwatch breakpoints enabled\n");
}
ignore_ws (c);
if (!more_params (c)) {
memwatch_dump (-1);
return;
}
nc = next_char (c);
if (nc == '-') {
deinitialize_memwatch ();
console_out ("Memwatch breakpoints disabled\n");
return;
}
if (nc == 'd') {
if (illgdebug) {
ignore_ws (c);
if (more_params (c)) {
uae_u32 addr = readhex (c);
uae_u32 len = 1;
if (more_params (c))
len = readhex (c);
write_log ("cleared logging addresses %8.8X - %8.8X\n", addr, addr + len);
while (len > 0) {
addr &= 0xffffff;
illgdebug[addr] = 0;
addr++;
len--;
}
}
} else {
illg_init ();
console_out ("Illegal memory access logging enabled\n");
ignore_ws (c);
illgdebug_break = 0;
if (more_params (c))
illgdebug_break = 1;
}
return;
}
num = nc - '0';
if (num < 0 || num >= MEMWATCH_TOTAL)
return;
mwn = &mwnodes[num];
mwn->size = 0;
ignore_ws (c);
if (!more_params (c)) {
console_out ("Memwatch %d removed\n", num);
return;
}
mwn->addr = readhex (c);
mwn->size = 1;
mwn->rw = 2;
mwn->val_enabled = 0;
mwn->modval_written = 0;
ignore_ws (c);
if (more_params (c)) {
mwn->size = readhex (c);
ignore_ws (c);
if (more_params (c)) {
char nc = toupper (next_char (c));
if (nc == 'W')
mwn->rw = 1;
else if (nc == 'R' && toupper (**c) != 'W')
mwn->rw = 0;
else if (nc == 'R' && toupper (**c) == 'W')
next_char (c);
ignore_ws (c);
if (more_params (c)) {
if (toupper (**c) == 'M') {
mwn->modval_written = 1;
} else {
mwn->val = readhex (c);
mwn->val_enabled = 1;
}
}
}
}
memwatch_dump (num);
}
static void writeintomem (const char **c)
{
uae_u32 addr = 0;
uae_u32 val = 0;
char cc;
ignore_ws (c);
addr = readhex (c);
ignore_ws (c);
val = readhex (c);
if (val > 0xffff) {
put_long (addr, val);
cc = 'L';
} else if (val > 0xff) {
put_word (addr, val);
cc = 'W';
} else {
put_byte (addr, val);
cc = 'B';
}
console_out ("Wrote %x (%u) at %08x.%c\n", val, val, addr, cc);
}
static void show_exec_tasks (void)
{
uaecptr execbase = get_long (4);
uaecptr taskready = get_long (execbase + 406);
uaecptr taskwait = get_long (execbase + 420);
uaecptr node, end;
console_out ("execbase at 0x%08lx\n", (unsigned long) execbase);
console_out ("Current:\n");
node = get_long (execbase + 276);
console_out ("%08x: %08x %s\n", node, 0, get_real_address (get_long (node + 10)));
console_out ("Ready:\n");
node = get_long (taskready);
end = get_long (taskready + 4);
while (node) {
console_out ("%08x: %08x %s\n", node, 0, get_real_address (get_long (node + 10)));
node = get_long (node);
}
console_out ("Waiting:\n");
node = get_long (taskwait);
end = get_long (taskwait + 4);
while (node) {
console_out ("%08x: %08x %s\n", node, 0, get_real_address (get_long (node + 10)));
node = get_long (node);
}
}
static int trace_same_insn_count;
static uae_u8 trace_insn_copy[10];
static struct regstruct trace_prev_regs;
static uaecptr nextpc;
static int instruction_breakpoint (const char **c)
{
struct breakpoint_node *bpn;
int i;
if (more_params (c)) {
char nc = toupper ((*c)[0]);
if (nc == 'I') {
next_char (c);
if (more_params (c))
skipins = readhex (c);
else
skipins = 0x10000;
do_skip = 1;
skipaddr_doskip = 1;
return 1;
} else if (nc == 'D' && (*c)[1] == 0) {
for (i = 0; i < BREAKPOINT_TOTAL; i++)
bpnodes[i].enabled = 0;
console_out ("All breakpoints removed\n");
return 0;
} else if (nc == 'L') {
int got = 0;
for (i = 0; i < BREAKPOINT_TOTAL; i++) {
bpn = &bpnodes[i];
if (!bpn->enabled)
continue;
console_out ("%8X ", bpn->addr);
got = 1;
}
if (!got)
console_out ("No breakpoints\n");
else
console_out ("\n");
return 0;
}
skipaddr_doskip = 1;
skipaddr_start = readhex (c);
if (more_params (c)) {
skipaddr_end = readhex (c);
} else {
for (i = 0; i < BREAKPOINT_TOTAL; i++) {
bpn = &bpnodes[i];
if (bpn->enabled && bpn->addr == skipaddr_start) {
bpn->enabled = 0;
console_out ("Breakpoint removed\n");
skipaddr_start = 0xffffffff;
skipaddr_doskip = 0;
return 0;
}
}
for (i = 0; i < BREAKPOINT_TOTAL; i++) {
bpn = &bpnodes[i];
if (bpn->enabled)
continue;
bpn->addr = skipaddr_start;
bpn->enabled = 1;
console_out ("Breakpoint added\n");
skipaddr_start = 0xffffffff;
skipaddr_doskip = 0;
break;
}
return 0;
}
}
if (skipaddr_start == 0xC0DEDBAD) {
trace_same_insn_count = 0;
logfile = fopen ("uae.trace", "w");
memcpy (trace_insn_copy, regs.pc_p, 10);
memcpy (&trace_prev_regs, &regs, sizeof regs);
}
do_skip = 1;
skipaddr_doskip = -1;
return 1;
}
static void savemem (const char **cc)
{
uae_u8 b;
uae_u32 src, src2, len, len2;
const char *start;
char *name = 0;
int name_len;
FILE *fp;
if (!more_params (cc))
goto S_argh;
start = *cc;
while (**cc != '\0' && !isspace (**cc))
(*cc)++;
if (!isspace (**cc))
goto S_argh;
name_len = *cc - start;
name = malloc (name_len + 1);
if (!name)
goto S_argh;
strncpy (name, start, name_len);
name[name_len] = '\0';
(*cc)++;
if (!more_params (cc))
goto S_argh;
src2 = src = readhex (cc);
if (!more_params (cc))
goto S_argh;
len2 = len = readhex (cc);
fp = fopen (name, "wb");
if (fp == NULL) {
console_out ("Couldn't open file '%s'\n", name);
return;
}
while (len > 0) {
b = get_byte (src);
src++;
len--;
if (fwrite (&b, 1, 1, fp) != 1) {
console_out ("Error writing file\n");
break;
}
}
fclose (fp);
if (len == 0)
console_out ("Wrote %08X - %08X (%d bytes) to '%s'\n",
src2, src2 + len2 - 1, len2, name);
free (name);
return;
S_argh:
if (name)
free (name);
console_out ("S-command needs more arguments!\n");
}
static void searchmem (const char **cc)
{
int i, sslen, got, val, stringmode;
uae_u8 ss[256];
uae_u32 addr, endaddr;
char nc;
got = 0;
sslen = 0;
stringmode = 0;
ignore_ws (cc);
if (**cc == '"') {
stringmode = 1;
(*cc)++;
while (**cc != '"' && **cc != 0) {
ss[sslen++] = tolower (**cc);
(*cc)++;
}
if (**cc != 0)
(*cc)++;
} else {
for (;;) {
if (**cc == 32 || **cc == 0)
break;
nc = toupper (next_char (cc));
if (isspace (nc))
break;
if (isdigit(nc))
val = nc - '0';
else
val = nc - 'A' + 10;
if (val < 0 || val > 15)
return;
val *= 16;
if (**cc == 32 || **cc == 0)
break;
nc = toupper (next_char (cc));
if (isspace (nc))
break;
if (isdigit(nc))
val += nc - '0';
else
val += nc - 'A' + 10;
if (val < 0 || val > 255)
return;
ss[sslen++] = (uae_u8)val;
}
}
if (sslen == 0)
return;
ignore_ws (cc);
addr = 0;
endaddr = nextaddr (0xffffffff);
if (more_params (cc)) {
addr = readhex (cc);
if (more_params (cc))
endaddr = readhex (cc);
}
console_out ("Searching from %08x to %08x..\n", addr, endaddr);
while (addr < endaddr && addr != 0xffffffff) {
for (i = 0; i < sslen; i++) {
uae_u8 b = get_byte (addr + i);
if (stringmode) {
if (tolower (b) != ss[i])
break;
} else {
if (b != ss[i])
break;
}
}
if (i == sslen) {
got++;
console_out (" %08x", addr);
if (got > 100) {
console_out ("\nMore than 100 results, aborting..");
break;
}
}
addr = nextaddr (addr);
}
if (!got)
console_out ("nothing found");
console_out ("\n");
}
#ifdef SAVESTATE
static int staterecorder (const char **cc)
{
char nc;
if (!more_params (cc)) {
if (savestate_dorewind (1)) {
debug_rewind = 1;
return 1;
}
return 0;
}
nc = next_char (cc);
if (nc == 'l') {
savestate_listrewind ();
return 0;
}
return 0;
}
#endif
static void disk_debug (const char **inptr)
{
char parm[10];
unsigned int i;
disk_debug_logging = 2;
disk_debug_mode = 0;
disk_debug_track = -1;
ignore_ws (inptr);
if (!next_string (inptr, parm, sizeof (parm), 1))
goto end;
for (i = 0; i < strlen (parm); i++) {
if (parm[i] == 'R')
disk_debug_mode |= DISK_DEBUG_DMA_READ;
if (parm[i] == 'W')
disk_debug_mode |= DISK_DEBUG_DMA_WRITE;
if (parm[i] == 'P')
disk_debug_mode |= DISK_DEBUG_PIO;
}
if (more_params (inptr))
disk_debug_track = readint (inptr);
if (disk_debug_track < 0 || disk_debug_track > 2 * 83)
disk_debug_track = -1;
end:
console_out ("disk breakpoint mode %c%c%c track %d\n",
disk_debug_mode & DISK_DEBUG_DMA_READ ? 'R' : '-',
disk_debug_mode & DISK_DEBUG_DMA_WRITE ? 'W' : '-',
disk_debug_mode & DISK_DEBUG_PIO ? 'P' : '-',
disk_debug_track);
}
static void m68k_modify (const char **inptr)
{
uae_u32 v;
char parm[10];
unsigned char c1, c2;
if (!next_string (inptr, parm, sizeof (parm), 1))
return;
c1 = toupper (parm[0]);
c2 = toupper (parm[1]);
if (c1 == 'A' || c1 == 'D' || c1 == 'P') {
if (!isdigit (c2))
return;
c2 -= '0';
}
v = readhex (inptr);
if (c1 == 'A')
regs.regs[8 + c2] = v;
else if (c1 == 'D')
regs.regs[c2] = v;
else if (c1 == 'P' && c2 == 0)
regs.irc = v;
else if (c1 == 'P' && c2 == 1)
regs.ir = v;
else if (!strcmp (parm, "VBR"))
regs.vbr = v;
else if (!strcmp (parm, "USP")) {
regs.usp = v;
MakeFromSR (&regs);
} else if (!strcmp (parm, "ISP")) {
regs.isp = v;
MakeFromSR (&regs);
} else if (!strcmp (parm, "MSP")) {
regs.msp = v;
MakeFromSR (&regs);
} else if (!strcmp (parm, "SR")) {
regs.sr = v;
MakeFromSR (&regs);
} else if (!strcmp (parm, "CCR")) {
regs.sr = (regs.sr & ~15) | (v & 15);
MakeFromSR (&regs);
}
}
static void debug_1 (void)
{
char input[80];
uaecptr nxdis, nxmem, addr;
m68k_dumpstate (stdout, &nextpc);
nxdis = nextpc; nxmem = 0;
for (;;) {
char cmd;
const char *inptr;
console_out (">");
console_flush ();
if (!console_get (input, 80))
continue;
inptr = input;
cmd = next_char (&inptr);
switch (cmd) {
case 'c': dumpcia (); dumpdisk (); dumpcustom (); break;
case 'i':
addr = 0xffffffff;
if (more_params (&inptr))
addr = readhex (&inptr);
dump_vectors (addr);
break;
case 'e': dump_custom_regs (); break;
case 'r': if (more_params (&inptr))
m68k_modify (&inptr);
else
m68k_dumpstate (stdout, &nextpc);
break;
case 'C': cheatsearch (&inptr); break;
case 'W': writeintomem (&inptr); break;
case 'w': memwatch (&inptr); break;
case 'S': savemem (&inptr); break;
case 's':
if (*inptr == 'c') {
// screenshot (1, 1);
} else if (*inptr == 'm') {
next_char (&inptr);
if (more_params (&inptr))
debug_sprite_mask = readint (&inptr);
console_out ("sprite mask: %2.2X\n", debug_sprite_mask);
} else {
searchmem (&inptr);
}
break;
case 'd':
{
if (*inptr == 'i') {
next_char (&inptr);
disk_debug (&inptr);
} else {
uae_u32 daddr;
int count;
if (more_params (&inptr))
daddr = readhex (&inptr);
else
daddr = nxdis;
if (more_params (&inptr))
count = readhex (&inptr);
else
count = 10;
m68k_disasm (stdout, daddr, &nxdis, count);
}
}
break;
case 'T': show_exec_tasks (); break;
case 't':
if (more_params (&inptr))
skipaddr_doskip = readint (&inptr);
if (skipaddr_doskip <= 0 || skipaddr_doskip > 10000)
skipaddr_doskip = 1;
set_special (&regs, SPCFLAG_BRK);
exception_debugging = 1;
return;
case 'z':
skipaddr_start = nextpc;
skipaddr_doskip = 1;
do_skip = 1;
exception_debugging = 1;
return;
case 'f':
if (instruction_breakpoint (&inptr))
return;
break;
case 'q': uae_quit();
debugger_active = 0;
debugging = 0;
return;
case 'g':
if (more_params (&inptr)) {
m68k_setpc (&regs, readhex (&inptr));
fill_prefetch_slow (&regs);
}
debugger_active = 0;
debugging = 0;
exception_debugging = 0;
return;
case 'H':
{
unsigned int count, temp, badly;
uae_u32 oldpc = m68k_getpc (&regs);
struct regstruct save_regs = regs;
badly = 0;
if (inptr[0] == 'H') {
badly = 1;
inptr++;
}
if (more_params (&inptr))
count = readhex (&inptr);
else
count = 10;
temp = lasthist;
while (count-- > 0 && temp != firsthist) {
if (temp == 0)
temp = MAX_HIST - 1;
else
temp--;
}
while (temp != lasthist) {
regs = history[temp];
m68k_setpc (&regs, history[temp].pc);
if (badly) {
m68k_dumpstate (stdout, NULL);
} else {
m68k_disasm (stdout, history[temp].pc, NULL, 1);
}
if (++temp == MAX_HIST)
temp = 0;
}
regs = save_regs;
m68k_setpc (&regs, oldpc);
}
break;
case 'm':
{
uae_u32 maddr; int lines;
if (more_params (&inptr))
maddr = readhex (&inptr);
else
maddr = nxmem;
if (more_params (&inptr))
lines = readhex (&inptr);
else
lines = 20;
dumpmem (maddr, &nxmem, lines);
}
break;
case 'o':
{
if (copper_debugger(&inptr)) {
debugger_active = 0;
debugging = 0;
return;
}
break;
}
case 'O':
if (more_params (&inptr)) {
int plane = readint (&inptr);
int offs = readint (&inptr);
if (plane >= 0 && plane < 8)
bpl_off[plane] = offs;
} else {
int i;
for (i = 0; i < 8; i++)
console_out ("Plane %d offset %d\n", i, bpl_off[i]);
}
break;
#ifdef SAVESTATE
case 'b':
if (staterecorder (&inptr))
return;
break;
#endif
case 'a':
if (more_params (&inptr)) {
char nc = next_char (&inptr);
if (nc == 'm')
audio_channel_mask = readint (&inptr);
}
break;
case 'h':
case '?':
debug_help ();
break;
}
}
}
static void addhistory (void)
{
history[lasthist] = regs;
history[lasthist].pc = m68k_getpc (&regs);
if (++lasthist == MAX_HIST)
lasthist = 0;
if (lasthist == firsthist) {
if (++firsthist == MAX_HIST) firsthist = 0;
}
}
void debug (void)
{
int i;
#ifdef SAVESTATE
if (savestate_state)
return;
#endif
bogusframe = 1;
addhistory ();
if (do_skip && skipaddr_start == 0xC0DEDBAD) {
#if 0
if (trace_same_insn_count > 0) {
if (memcmp (trace_insn_copy, regs.pc_p, 10) == 0
&& memcmp (trace_prev_regs.regs, regs.regs, sizeof regs.regs) == 0)
{
trace_same_insn_count++;
return;
}
}
if (trace_same_insn_count > 1)
fprintf (logfile, "[ repeated %d times ]\n", trace_same_insn_count);
#endif
m68k_dumpstate (logfile, &nextpc);
trace_same_insn_count = 1;
memcpy (trace_insn_copy, regs.pc_p, 10);
memcpy (&trace_prev_regs, &regs, sizeof regs);
}
if (!memwatch_triggered) {
if (do_skip) {
uae_u32 pc = munge24 (m68k_getpc (&regs));
uae_u16 opcode = (currprefs.cpu_compatible || currprefs.cpu_cycle_exact) ? regs.ir : get_word (pc);
int bp = 0;
for (i = 0; i < BREAKPOINT_TOTAL; i++) {
if (!bpnodes[i].enabled)
continue;
if (bpnodes[i].addr == pc) {
bp = 1;
console_out ("Breakpoint at %8.8X\n", pc);
break;
}
}
if (skipaddr_doskip) {
if (skipaddr_start == pc)
bp = 1;
if (skipins != 0xffffffff) {
if (skipins == 0x10000) {
if (opcode == 0x4e75 || opcode == 0x4e73 || opcode == 0x4e77)
bp = 1;
} else if (opcode == skipins)
bp = 1;
} else if (skipaddr_start == 0xffffffff && skipaddr_doskip < 0) {
if ((pc < 0xe00000 || pc >= 0x1000000) && opcode != 0x4ef9)
bp = 1;
} else if (skipaddr_start == 0xffffffff && skipaddr_doskip > 0) {
bp = 1;
} else if (skipaddr_end != 0xffffffff) {
if (pc >= skipaddr_start && pc < skipaddr_end)
bp = 1;
}
}
if (!bp) {
set_special (&regs, SPCFLAG_BRK);
return;
}
}
} else {
write_log ("Memwatch %d: break at %8.8X.%c %c %8.8X\n", memwatch_triggered - 1, mwhit.addr,
mwhit.size == 1 ? 'B' : (mwhit.size == 2 ? 'W' : 'L'), mwhit.rw ? 'W' : 'R', mwhit.val);
memwatch_triggered = 0;
}
if (skipaddr_doskip > 0) {
skipaddr_doskip--;
if (skipaddr_doskip > 0) {
set_special (&regs, SPCFLAG_BRK);
return;
}
}
inputdevice_unacquire ();
audio_pause ();
do_skip = 0;
skipaddr_start = 0xffffffff;
skipaddr_end = 0xffffffff;
skipins = 0xffffffff;
skipaddr_doskip = 0;
exception_debugging = 0;
#ifdef SAVESTATE
debug_rewind = 0;
#if 0
if (!currprefs.statecapture) {
changed_prefs.statecapture = currprefs.statecapture = 1;
savestate_init ();
}
#endif
#endif
debug_1 ();
#ifdef SAVESTATE
if (!debug_rewind
#ifdef JIT
&& !currprefs.cachesize
#endif
#ifdef FILESYS
&& nr_units (currprefs.mountinfo) == 0
#endif
) {
savestate_capture (1);
}
#endif
for (i = 0; i < BREAKPOINT_TOTAL; i++) {
if (bpnodes[i].enabled)
do_skip = 1;
}
if (do_skip) {
set_special (&regs, SPCFLAG_BRK);
debugging = 1;
}
audio_resume ();
inputdevice_acquire ();
}
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