mon/src/mon_cmd.cpp

/*
 *  mon_cmd.cpp - cxmon standard commands
 *
 *  cxmon (C) 1997-2002 Christian Bauer, Marc Hellwig
 *
 *  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 "sysdeps.h"

#include <stdlib.h>

#include "mon.h"
#include "mon_cmd.h"
#include "mon_disass.h"

#ifndef VERSION
#define VERSION "3"
#endif


/*
 *  range_args = [expression] [[COMMA] expression] END
 *
 *  Read start address to "adr", end address to "end_adr".
 *  "adr" defaults to '.', "end_adr" defaults to '.'+def_range
 *
 *  true: OK, false: Error
 */

static bool range_args(uintptr *adr, uintptr *end_adr, uint32 def_range)
{
        *adr = mon_dot_address;
        *end_adr = mon_dot_address + def_range;

        if (mon_token == T_END)
                return true;
        else {
                if (!mon_expression(adr))
                        return false;
                *end_adr = *adr + def_range;
                if (mon_token == T_END)
                        return true;
                else {
                        if (mon_token == T_COMMA) mon_get_token();
                        if (!mon_expression(end_adr))
                                return false;
                        return mon_token == T_END;
                }
        }
}


/*
 *  byte_string = (expression | STRING) {COMMA (expression | STRING)} END
 */

static bool byte_string(uint8 *s, uintptr &len)
{
        uintptr value;

        len = 0;
        goto start;

        for (;;) {
                if (mon_token == T_COMMA) {
                        mon_get_token();

start:
                        if (mon_token == T_STRING) {
                                uint8 *p = (uint8 *)mon_string;
                                while ((*s++ = *p++) != 0) ;
                                s--;
                                len += strlen(mon_string);
                                mon_get_token();
                        } else if (mon_expression(&value)) {
                                *s++ = value;
                                len++;
                        } else
                                return false;

                } else if (mon_token == T_END)
                        return true;
                else {
                        mon_error("',' expected");
                        return false;
                }
        }
}


/*
 *  Convert character to printable character
 */

static inline uint8 char2print(uint8 c)
{
        return (c >= 0x20 && c <= 0x7e) ? c : '.';
}


/*
 *  Show version
 *  ver
 */

void version(void)
{
        fprintf(monout, "mon V" VERSION "\n");
}


/*
 *  Redirect output
 *  o [file]
 */

void redir_output(void)
{
        // Close old file
        if (monout != monerr) {
                fclose(monout);
                monout = monerr;
                return;
        }

        // No argument given?
        if (mon_token == T_END)
                return;

        // Otherwise open file
        if (mon_token == T_STRING) {
                mon_get_token();
                if (mon_token != T_END) {
                        mon_error("Too many arguments");
                        return;
                }
                if (!(monout = fopen(mon_string, "w")))
                        mon_error("Unable to open file");
        } else
                mon_error("'\"' around file name expected");
}


/*
 *  Compute and display expression
 *  ? expression
 */

void print_expr(void)
{
        uintptr val;

        if (!mon_expression(&val))
                return;
        if (mon_token != T_END) {
                mon_error("Too many arguments");
                return;
        }

        if (val > 0x7fffffff) {
                fprintf(monout, "Hex unsigned:  $%08x\n"
                                          "Hex signed  : -$%08x\n"
                                          "Dec unsigned:  %u\n"
                                          "Dec signed  : %d\n", val, -val, val, val);
                fprintf(monout, "Char        : '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
        } else {
                fprintf(monout, "Hex : $%08x\n"
                                          "Dec : %d\n", val, val);
                fprintf(monout, "Char: '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
        }
}


/*
 *  Execute shell command
 *  \ "command"
 */

void shell_command(void)
{
        if (mon_token != T_STRING) {
                mon_error("'\"' around command expected");
                return;
        }
        mon_get_token();
        if (mon_token != T_END) {
                mon_error("Too many arguments");
                return;
        }
        system(mon_string);
}


/*
 *  Memory dump
 *  m [start [end]]
 */

#define MEMDUMP_BPL 16  // Bytes per line

void memory_dump(void)
{
        uintptr adr, end_adr;
        uint8 mem[MEMDUMP_BPL + 1];

        mem[MEMDUMP_BPL] = 0;

        if (!range_args(&adr, &end_adr, 16 * MEMDUMP_BPL - 1))  // 16 lines unless end address specified
                return;

        while (adr <= end_adr && !mon_aborted()) {
                fprintf(monout, "%0*lx:", 2 * sizeof(adr), mon_use_real_mem ? adr: adr % mon_mem_size);
                for (int i=0; i<MEMDUMP_BPL; i++, adr++) {
                        if (i % 4 == 0)
                                fprintf(monout, " %08x", mon_read_word(adr));
                        mem[i] = char2print(mon_read_byte(adr));
                }
                fprintf(monout, "  '%s'\n", mem);
        }

        mon_dot_address = adr;
}


/*
 *  ASCII dump
 *  i [start [end]]
 */

#define ASCIIDUMP_BPL 64  // Bytes per line

void ascii_dump(void)
{
        uintptr adr, end_adr;
        uint8 str[ASCIIDUMP_BPL + 1];

        str[ASCIIDUMP_BPL] = 0;

        if (!range_args(&adr, &end_adr, 16 * ASCIIDUMP_BPL - 1))  // 16 lines unless end address specified
                return;

        while (adr <= end_adr && !mon_aborted()) {
                fprintf(monout, "%0*lx:", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                for (int i=0; i<ASCIIDUMP_BPL; i++, adr++)
                        str[i] = char2print(mon_read_byte(adr));
                fprintf(monout, " '%s'\n", str);
        }

        mon_dot_address = adr;
}


/*
 *  Binary dump
 *  b [start [end]]
 */

void binary_dump(void)
{
        uintptr adr, end_adr;
        uint8 str[9];

        str[8] = 0;

        if (!range_args(&adr, &end_adr, 7))  // 8 lines unless end address specified
                return;

        while (adr <= end_adr && !mon_aborted()) {
                fprintf(monout, "%0*lx:", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                uint8 b = mon_read_byte(adr);
                for (int m=0x80, i=0; i<8; m>>=1, i++)
                        str[i] = (b & m) ? '*' : '.';
                fprintf(monout, " '%s'\n", str);
                adr++;
        }

        mon_dot_address = adr;
}


/*
 *  Disassemble
 *  d [start [end]]
 *  d65 [start [end]]
 *  d68 [start [end]]
 *  d80 [start [end]]
 *  d86 [start [end]]
 *  d8086 [start [end]]
 */

enum CPUType {
        CPU_PPC,
        CPU_6502,
        CPU_680x0,
        CPU_Z80,
        CPU_80x86_32,
        CPU_80x86_16,
        CPU_x86_64
};

static void disassemble(CPUType type)
{
        uintptr adr, end_adr;

        if (!range_args(&adr, &end_adr, 16 * 4 - 1))  // 16 lines unless end address specified
                return;

        switch (type) {
                case CPU_PPC:
                        while (adr <= end_adr && !mon_aborted()) {
                                uint32 w = mon_read_word(adr);
                                fprintf(monout, "%0*lx: %08x\t", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size, w);
                                disass_ppc(monout, mon_use_real_mem ? adr : adr % mon_mem_size, w);
                                adr += 4;
                        }
                        break;

                case CPU_6502:
                        while (adr <= end_adr && !mon_aborted()) {
                                uint8 op = mon_read_byte(adr);
                                uint8 lo = mon_read_byte(adr + 1);
                                uint8 hi = mon_read_byte(adr + 2);
                                fprintf(monout, "%0*lx: ", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                                adr += disass_6502(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
                        }
                        break;

                case CPU_680x0:
                        while (adr <= end_adr && !mon_aborted()) {
                                fprintf(monout, "%0*lx: ", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                                adr += disass_68k(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
                        }
                        break;

                case CPU_Z80:
                        while (adr <= end_adr && !mon_aborted()) {
                                fprintf(monout, "%0*lx: ", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                                adr += disass_z80(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
                        }
                        break;

                case CPU_x86_64:
                        while (adr <= end_adr && !mon_aborted()) {
                                fprintf(monout, "%0*lx: ", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                                adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 64);
                        }
                        break;

                case CPU_80x86_32:
                        while (adr <= end_adr && !mon_aborted()) {
                                fprintf(monout, "%0*lx: ", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                                adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 32);
                        }
                        break;

                case CPU_80x86_16:
                        while (adr <= end_adr && !mon_aborted()) {
                                fprintf(monout, "%0*lx: ", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                                adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 16);
                        }
        }

        mon_dot_address = adr;
}

void disassemble_ppc(void)
{
        disassemble(CPU_PPC);
}

void disassemble_6502(void)
{
        disassemble(CPU_6502);
}

void disassemble_680x0(void)
{
        disassemble(CPU_680x0);
}

void disassemble_z80(void)
{
        disassemble(CPU_Z80);
}

void disassemble_80x86_32(void)
{
        disassemble(CPU_80x86_32);
}

void disassemble_80x86_16(void)
{
        disassemble(CPU_80x86_16);
}

void disassemble_x86_64(void)
{
        disassemble(CPU_x86_64);
}


/*
 *  Modify memory
 *  : addr bytestring
 */

void modify(void)
{
        uintptr adr, len, src_adr = 0;
        uint8 str[256];

        if (!mon_expression(&adr))
                return;
        if (!byte_string(str, len))
                return;

        while (src_adr < len)
                mon_write_byte(adr++, str[src_adr++]);

        mon_dot_address = adr;
}


/*
 *  Fill
 *  f start end bytestring
 */

void fill(void)
{
        uintptr adr, end_adr, len, src_adr = 0;
        uint8 str[256];

        if (!mon_expression(&adr))
                return;
        if (!mon_expression(&end_adr))
                return;
        if (!byte_string(str, len))
                return;

        while (adr <= end_adr)
                mon_write_byte(adr++, str[src_adr++ % len]);
}


/*
 *  Transfer memory
 *  t start end dest
 */

void transfer(void)
{
        uintptr adr, end_adr, dest;
        int num;

        if (!mon_expression(&adr))
                return;
        if (!mon_expression(&end_adr))
                return;
        if (!mon_expression(&dest))
                return;
        if (mon_token != T_END) {
                mon_error("Too many arguments");
                return;
        }

        num = end_adr - adr + 1;

        if (dest < adr)
                for (int i=0; i<num; i++)
                        mon_write_byte(dest++, mon_read_byte(adr++));
        else {
                dest += end_adr - adr;
                for (int i=0; i<num; i++)
                        mon_write_byte(dest--, mon_read_byte(end_adr--));
        }
}


/*
 *  Compare
 *  c start end dest
 */

void compare(void)
{
        uintptr adr, end_adr, dest;
        int num = 0;

        if (!mon_expression(&adr))
                return;
        if (!mon_expression(&end_adr))
                return;
        if (!mon_expression(&dest))
                return;
        if (mon_token != T_END) {
                mon_error("Too many arguments");
                return;
        }

        while (adr <= end_adr && !mon_aborted()) {
                if (mon_read_byte(adr) != mon_read_byte(dest)) {
                        fprintf(monout, "%0*lx ", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                        num++;
                        if (!(num & 7))
                                fputc('\n', monout);
                }
                adr++; dest++;
        }

        if (num & 7)
                fputc('\n', monout);
        fprintf(monout, "%d byte(s) different\n", num);
}


/*
 *  Search for byte string
 *  h start end bytestring
 */

void hunt(void)
{
        uintptr adr, end_adr, len;
        uint8 str[256];
        int num = 0;

        if (!mon_expression(&adr))
                return;
        if (!mon_expression(&end_adr))
                return;
        if (!byte_string(str, len))
                return;

        while ((adr+len-1) <= end_adr && !mon_aborted()) {
                uint32 i;

                for (i=0; i<len; i++)
                        if (mon_read_byte(adr + i) != str[i])
                                break;

                if (i == len) {
                        fprintf(monout, "%0*lx ", 2 * sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
                        num++;
                        if (num == 1)
                                mon_dot_address = adr;
                        if (!(num & 7))
                                fputc('\n', monout);
                }
                adr++;
        }

        if (num & 7)
                fputc('\n', monout);
        fprintf(monout, "Found %d occurrences\n", num);
}


/*
 *  Load data
 *  [ start "file"
 */

void load_data(void)
{
        uintptr start_adr;
        FILE *file;
        int fc;

        if (!mon_expression(&start_adr))
                return;
        if (mon_token == T_END) {
                mon_error("Missing file name");
                return;
        }
        if (mon_token != T_STRING) {
                mon_error("'\"' around file name expected");
                return;
        }
        mon_get_token();
        if (mon_token != T_END) {
                mon_error("Too many arguments");
                return;
        }

        if (!(file = fopen(mon_string, "rb")))
                mon_error("Unable to open file");
        else {
                uintptr adr = start_adr;

                while ((fc = fgetc(file)) != EOF)
                        mon_write_byte(adr++, fc);
                fclose(file);

                fprintf(monerr, "%08x bytes read from %0*lx to %0*lx\n", adr - start_adr, 2 * sizeof(adr), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, 2 * sizeof(adr), mon_use_real_mem ? adr-1 : (adr-1) % mon_mem_size);
                mon_dot_address = adr;
        }
}


/*
 *  Save data
 *  ] start size "file"
 */

void save_data(void)
{
        uintptr start_adr, size;
        FILE *file;

        if (!mon_expression(&start_adr))
                return;
        if (!mon_expression(&size))
                return;
        if (mon_token == T_END) {
                mon_error("Missing file name");
                return;
        }
        if (mon_token != T_STRING) {
                mon_error("'\"' around file name expected");
                return;
        }
        mon_get_token();
        if (mon_token != T_END) {
                mon_error("Too many arguments");
                return;
        }

        if (!(file = fopen(mon_string, "wb")))
                mon_error("Unable to create file");
        else {
                uintptr adr = start_adr, end_adr = start_adr + size - 1;

                while (adr <= end_adr)
                        fputc(mon_read_byte(adr++), file);
                fclose(file);

                fprintf(monerr, "%08x bytes written from %0*lx to %0*lx\n", size, 2 * sizeof(adr), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, 2 * sizeof(adr), mon_use_real_mem ? end_adr : end_adr % mon_mem_size);
        }
}
Revision:	1.14
Committed:	2003-06-19T15:07:46Z (20 years, 10 months ago) by cebix
Branch:	MAIN
Changes since 1.13:	+1 -1 lines
Log Message:	end address of ']' command was incorrectly printed
#	Content
1	/*
2	* mon_cmd.cpp - cxmon standard commands
3	*
4	* cxmon (C) 1997-2002 Christian Bauer, Marc Hellwig
5	*
6	* This program is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*/
20
21	#include "sysdeps.h"
22
23	#include <stdlib.h>
24
25	#include "mon.h"
26	#include "mon_cmd.h"
27	#include "mon_disass.h"
28
29	#ifndef VERSION
30	#define VERSION "3"
31	#endif
32
33
34	/*
35	* range_args = [expression] [[COMMA] expression] END
36	*
37	* Read start address to "adr", end address to "end_adr".
38	* "adr" defaults to '.', "end_adr" defaults to '.'+def_range
39	*
40	* true: OK, false: Error
41	*/
42
43	static bool range_args(uintptr adr, uintptr end_adr, uint32 def_range)
44	{
45	*adr = mon_dot_address;
46	*end_adr = mon_dot_address + def_range;
47
48	if (mon_token == T_END)
49	return true;
50	else {
51	if (!mon_expression(adr))
52	return false;
53	end_adr = adr + def_range;
54	if (mon_token == T_END)
55	return true;
56	else {
57	if (mon_token == T_COMMA) mon_get_token();
58	if (!mon_expression(end_adr))
59	return false;
60	return mon_token == T_END;
61	}
62	}
63	}
64
65
66	/*
67	* byte_string = (expression \| STRING) {COMMA (expression \| STRING)} END
68	*/
69
70	static bool byte_string(uint8 *s, uintptr &len)
71	{
72	uintptr value;
73
74	len = 0;
75	goto start;
76
77	for (;;) {
78	if (mon_token == T_COMMA) {
79	mon_get_token();
80
81	start:
82	if (mon_token == T_STRING) {
83	uint8 p = (uint8 )mon_string;
84	while ((s++ = p++) != 0) ;
85	s--;
86	len += strlen(mon_string);
87	mon_get_token();
88	} else if (mon_expression(&value)) {
89	*s++ = value;
90	len++;
91	} else
92	return false;
93
94	} else if (mon_token == T_END)
95	return true;
96	else {
97	mon_error("',' expected");
98	return false;
99	}
100	}
101	}
102
103
104	/*
105	* Convert character to printable character
106	*/
107
108	static inline uint8 char2print(uint8 c)
109	{
110	return (c >= 0x20 && c <= 0x7e) ? c : '.';
111	}
112
113
114	/*
115	* Show version
116	* ver
117	*/
118
119	void version(void)
120	{
121	fprintf(monout, "mon V" VERSION "\n");
122	}
123
124
125	/*
126	* Redirect output
127	* o [file]
128	*/
129
130	void redir_output(void)
131	{
132	// Close old file
133	if (monout != monerr) {
134	fclose(monout);
135	monout = monerr;
136	return;
137	}
138
139	// No argument given?
140	if (mon_token == T_END)
141	return;
142
143	// Otherwise open file
144	if (mon_token == T_STRING) {
145	mon_get_token();
146	if (mon_token != T_END) {
147	mon_error("Too many arguments");
148	return;
149	}
150	if (!(monout = fopen(mon_string, "w")))
151	mon_error("Unable to open file");
152	} else
153	mon_error("'\"' around file name expected");
154	}
155
156
157	/*
158	* Compute and display expression
159	* ? expression
160	*/
161
162	void print_expr(void)
163	{
164	uintptr val;
165
166	if (!mon_expression(&val))
167	return;
168	if (mon_token != T_END) {
169	mon_error("Too many arguments");
170	return;
171	}
172
173	if (val > 0x7fffffff) {
174	fprintf(monout, "Hex unsigned: $%08x\n"
175	"Hex signed : -$%08x\n"
176	"Dec unsigned: %u\n"
177	"Dec signed : %d\n", val, -val, val, val);
178	fprintf(monout, "Char : '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
179	} else {
180	fprintf(monout, "Hex : $%08x\n"
181	"Dec : %d\n", val, val);
182	fprintf(monout, "Char: '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
183	}
184	}
185
186
187	/*
188	* Execute shell command
189	* \ "command"
190	*/
191
192	void shell_command(void)
193	{
194	if (mon_token != T_STRING) {
195	mon_error("'\"' around command expected");
196	return;
197	}
198	mon_get_token();
199	if (mon_token != T_END) {
200	mon_error("Too many arguments");
201	return;
202	}
203	system(mon_string);
204	}
205
206
207	/*
208	* Memory dump
209	* m [start [end]]
210	*/
211
212	#define MEMDUMP_BPL 16 // Bytes per line
213
214	void memory_dump(void)
215	{
216	uintptr adr, end_adr;
217	uint8 mem[MEMDUMP_BPL + 1];
218
219	mem[MEMDUMP_BPL] = 0;
220
221	if (!range_args(&adr, &end_adr, 16 * MEMDUMP_BPL - 1)) // 16 lines unless end address specified
222	return;
223
224	while (adr <= end_adr && !mon_aborted()) {
225	fprintf(monout, "%0lx:", 2 sizeof(adr), mon_use_real_mem ? adr: adr % mon_mem_size);
226	for (int i=0; i<MEMDUMP_BPL; i++, adr++) {
227	if (i % 4 == 0)
228	fprintf(monout, " %08x", mon_read_word(adr));
229	mem[i] = char2print(mon_read_byte(adr));
230	}
231	fprintf(monout, " '%s'\n", mem);
232	}
233
234	mon_dot_address = adr;
235	}
236
237
238	/*
239	* ASCII dump
240	* i [start [end]]
241	*/
242
243	#define ASCIIDUMP_BPL 64 // Bytes per line
244
245	void ascii_dump(void)
246	{
247	uintptr adr, end_adr;
248	uint8 str[ASCIIDUMP_BPL + 1];
249
250	str[ASCIIDUMP_BPL] = 0;
251
252	if (!range_args(&adr, &end_adr, 16 * ASCIIDUMP_BPL - 1)) // 16 lines unless end address specified
253	return;
254
255	while (adr <= end_adr && !mon_aborted()) {
256	fprintf(monout, "%0lx:", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
257	for (int i=0; i<ASCIIDUMP_BPL; i++, adr++)
258	str[i] = char2print(mon_read_byte(adr));
259	fprintf(monout, " '%s'\n", str);
260	}
261
262	mon_dot_address = adr;
263	}
264
265
266	/*
267	* Binary dump
268	* b [start [end]]
269	*/
270
271	void binary_dump(void)
272	{
273	uintptr adr, end_adr;
274	uint8 str[9];
275
276	str[8] = 0;
277
278	if (!range_args(&adr, &end_adr, 7)) // 8 lines unless end address specified
279	return;
280
281	while (adr <= end_adr && !mon_aborted()) {
282	fprintf(monout, "%0lx:", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
283	uint8 b = mon_read_byte(adr);
284	for (int m=0x80, i=0; i<8; m>>=1, i++)
285	str[i] = (b & m) ? '*' : '.';
286	fprintf(monout, " '%s'\n", str);
287	adr++;
288	}
289
290	mon_dot_address = adr;
291	}
292
293
294	/*
295	* Disassemble
296	* d [start [end]]
297	* d65 [start [end]]
298	* d68 [start [end]]
299	* d80 [start [end]]
300	* d86 [start [end]]
301	* d8086 [start [end]]
302	*/
303
304	enum CPUType {
305	CPU_PPC,
306	CPU_6502,
307	CPU_680x0,
308	CPU_Z80,
309	CPU_80x86_32,
310	CPU_80x86_16,
311	CPU_x86_64
312	};
313
314	static void disassemble(CPUType type)
315	{
316	uintptr adr, end_adr;
317
318	if (!range_args(&adr, &end_adr, 16 * 4 - 1)) // 16 lines unless end address specified
319	return;
320
321	switch (type) {
322	case CPU_PPC:
323	while (adr <= end_adr && !mon_aborted()) {
324	uint32 w = mon_read_word(adr);
325	fprintf(monout, "%0lx: %08x\t", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size, w);
326	disass_ppc(monout, mon_use_real_mem ? adr : adr % mon_mem_size, w);
327	adr += 4;
328	}
329	break;
330
331	case CPU_6502:
332	while (adr <= end_adr && !mon_aborted()) {
333	uint8 op = mon_read_byte(adr);
334	uint8 lo = mon_read_byte(adr + 1);
335	uint8 hi = mon_read_byte(adr + 2);
336	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
337	adr += disass_6502(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
338	}
339	break;
340
341	case CPU_680x0:
342	while (adr <= end_adr && !mon_aborted()) {
343	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
344	adr += disass_68k(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
345	}
346	break;
347
348	case CPU_Z80:
349	while (adr <= end_adr && !mon_aborted()) {
350	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
351	adr += disass_z80(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
352	}
353	break;
354
355	case CPU_x86_64:
356	while (adr <= end_adr && !mon_aborted()) {
357	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
358	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 64);
359	}
360	break;
361
362	case CPU_80x86_32:
363	while (adr <= end_adr && !mon_aborted()) {
364	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
365	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 32);
366	}
367	break;
368
369	case CPU_80x86_16:
370	while (adr <= end_adr && !mon_aborted()) {
371	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
372	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 16);
373	}
374	}
375
376	mon_dot_address = adr;
377	}
378
379	void disassemble_ppc(void)
380	{
381	disassemble(CPU_PPC);
382	}
383
384	void disassemble_6502(void)
385	{
386	disassemble(CPU_6502);
387	}
388
389	void disassemble_680x0(void)
390	{
391	disassemble(CPU_680x0);
392	}
393
394	void disassemble_z80(void)
395	{
396	disassemble(CPU_Z80);
397	}
398
399	void disassemble_80x86_32(void)
400	{
401	disassemble(CPU_80x86_32);
402	}
403
404	void disassemble_80x86_16(void)
405	{
406	disassemble(CPU_80x86_16);
407	}
408
409	void disassemble_x86_64(void)
410	{
411	disassemble(CPU_x86_64);
412	}
413
414
415	/*
416	* Modify memory
417	* : addr bytestring
418	*/
419
420	void modify(void)
421	{
422	uintptr adr, len, src_adr = 0;
423	uint8 str[256];
424
425	if (!mon_expression(&adr))
426	return;
427	if (!byte_string(str, len))
428	return;
429
430	while (src_adr < len)
431	mon_write_byte(adr++, str[src_adr++]);
432
433	mon_dot_address = adr;
434	}
435
436
437	/*
438	* Fill
439	* f start end bytestring
440	*/
441
442	void fill(void)
443	{
444	uintptr adr, end_adr, len, src_adr = 0;
445	uint8 str[256];
446
447	if (!mon_expression(&adr))
448	return;
449	if (!mon_expression(&end_adr))
450	return;
451	if (!byte_string(str, len))
452	return;
453
454	while (adr <= end_adr)
455	mon_write_byte(adr++, str[src_adr++ % len]);
456	}
457
458
459	/*
460	* Transfer memory
461	* t start end dest
462	*/
463
464	void transfer(void)
465	{
466	uintptr adr, end_adr, dest;
467	int num;
468
469	if (!mon_expression(&adr))
470	return;
471	if (!mon_expression(&end_adr))
472	return;
473	if (!mon_expression(&dest))
474	return;
475	if (mon_token != T_END) {
476	mon_error("Too many arguments");
477	return;
478	}
479
480	num = end_adr - adr + 1;
481
482	if (dest < adr)
483	for (int i=0; i<num; i++)
484	mon_write_byte(dest++, mon_read_byte(adr++));
485	else {
486	dest += end_adr - adr;
487	for (int i=0; i<num; i++)
488	mon_write_byte(dest--, mon_read_byte(end_adr--));
489	}
490	}
491
492
493	/*
494	* Compare
495	* c start end dest
496	*/
497
498	void compare(void)
499	{
500	uintptr adr, end_adr, dest;
501	int num = 0;
502
503	if (!mon_expression(&adr))
504	return;
505	if (!mon_expression(&end_adr))
506	return;
507	if (!mon_expression(&dest))
508	return;
509	if (mon_token != T_END) {
510	mon_error("Too many arguments");
511	return;
512	}
513
514	while (adr <= end_adr && !mon_aborted()) {
515	if (mon_read_byte(adr) != mon_read_byte(dest)) {
516	fprintf(monout, "%0lx ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
517	num++;
518	if (!(num & 7))
519	fputc('\n', monout);
520	}
521	adr++; dest++;
522	}
523
524	if (num & 7)
525	fputc('\n', monout);
526	fprintf(monout, "%d byte(s) different\n", num);
527	}
528
529
530	/*
531	* Search for byte string
532	* h start end bytestring
533	*/
534
535	void hunt(void)
536	{
537	uintptr adr, end_adr, len;
538	uint8 str[256];
539	int num = 0;
540
541	if (!mon_expression(&adr))
542	return;
543	if (!mon_expression(&end_adr))
544	return;
545	if (!byte_string(str, len))
546	return;
547
548	while ((adr+len-1) <= end_adr && !mon_aborted()) {
549	uint32 i;
550
551	for (i=0; i<len; i++)
552	if (mon_read_byte(adr + i) != str[i])
553	break;
554
555	if (i == len) {
556	fprintf(monout, "%0lx ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
557	num++;
558	if (num == 1)
559	mon_dot_address = adr;
560	if (!(num & 7))
561	fputc('\n', monout);
562	}
563	adr++;
564	}
565
566	if (num & 7)
567	fputc('\n', monout);
568	fprintf(monout, "Found %d occurrences\n", num);
569	}
570
571
572	/*
573	* Load data
574	* [ start "file"
575	*/
576
577	void load_data(void)
578	{
579	uintptr start_adr;
580	FILE *file;
581	int fc;
582
583	if (!mon_expression(&start_adr))
584	return;
585	if (mon_token == T_END) {
586	mon_error("Missing file name");
587	return;
588	}
589	if (mon_token != T_STRING) {
590	mon_error("'\"' around file name expected");
591	return;
592	}
593	mon_get_token();
594	if (mon_token != T_END) {
595	mon_error("Too many arguments");
596	return;
597	}
598
599	if (!(file = fopen(mon_string, "rb")))
600	mon_error("Unable to open file");
601	else {
602	uintptr adr = start_adr;
603
604	while ((fc = fgetc(file)) != EOF)
605	mon_write_byte(adr++, fc);
606	fclose(file);
607
608	fprintf(monerr, "%08x bytes read from %0lx to %0lx\n", adr - start_adr, 2 * sizeof(adr), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, 2 * sizeof(adr), mon_use_real_mem ? adr-1 : (adr-1) % mon_mem_size);
609	mon_dot_address = adr;
610	}
611	}
612
613
614	/*
615	* Save data
616	* ] start size "file"
617	*/
618
619	void save_data(void)
620	{
621	uintptr start_adr, size;
622	FILE *file;
623
624	if (!mon_expression(&start_adr))
625	return;
626	if (!mon_expression(&size))
627	return;
628	if (mon_token == T_END) {
629	mon_error("Missing file name");
630	return;
631	}
632	if (mon_token != T_STRING) {
633	mon_error("'\"' around file name expected");
634	return;
635	}
636	mon_get_token();
637	if (mon_token != T_END) {
638	mon_error("Too many arguments");
639	return;
640	}
641
642	if (!(file = fopen(mon_string, "wb")))
643	mon_error("Unable to create file");
644	else {
645	uintptr adr = start_adr, end_adr = start_adr + size - 1;
646
647	while (adr <= end_adr)
648	fputc(mon_read_byte(adr++), file);
649	fclose(file);
650
651	fprintf(monerr, "%08x bytes written from %0lx to %0lx\n", size, 2 * sizeof(adr), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, 2 * sizeof(adr), mon_use_real_mem ? end_adr : end_adr % mon_mem_size);
652	}
653	}