mon/src/mon_cmd.cpp

/*
 *  mon_cmd.cpp - mon standard commands
 *
 *  (C) 1997-1999 Christian Bauer
 */

#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "mon.h"
#include "mon_cmd.h"
#include "mon_ppc.h"
#include "mon_68k.h"
#include "mon_x86.h"
#include "mon_6502.h"
#include "mon_8080.h"


/*
 *  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(uint32 *adr, uint32 *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, uint32 &len)
{
        uint32 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%d.%d\n", MON_VERSION, MON_REVISION);
}


/*
 *  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)
{
        uint32 val;

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

        if (val > 0x7fffffff) {
                fprintf(monout, "Hex unsigned:  $%08lx\n"
                                          "Hex signed  : -$%08lx\n"
                                          "Dec unsigned:  %lu\n"
                                          "Dec signed  : %ld\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 : $%08lx\n"
                                          "Dec : %ld\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)
{
        uint32 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, "%08lx:", mon_use_real_mem ? adr: adr % mon_mem_size);
                for (int i=0; i<MEMDUMP_BPL; i++, adr++) {
                        if (i % 4 == 0)
                                fprintf(monout, " %08lx", 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)
{
        uint32 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, "%08lx:", 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;
}


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

enum CPUType {
        CPU_PPC,
        CPU_6502,
        CPU_680x0,
        CPU_8080,
        CPU_80x86
};

static void disassemble(CPUType type)
{
        uint32 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, "%08lx: %08lx\t", 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, "%08lx: ", 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()) {
                                uint16 buf[8];
                                buf[0] = mon_read_half(adr);
                                buf[1] = mon_read_half(adr + 2);
                                buf[2] = mon_read_half(adr + 4);
                                buf[3] = mon_read_half(adr + 6);
                                buf[4] = mon_read_half(adr + 8);
                                buf[5] = mon_read_half(adr + 10);
                                buf[6] = mon_read_half(adr + 12);
                                buf[7] = mon_read_half(adr + 14);
                                fprintf(monout, "%08lx: ", mon_use_real_mem ? adr : adr % mon_mem_size);
                                adr += disass_68k(monout, mon_use_real_mem ? adr : adr % mon_mem_size, buf);
                        }
                        break;

                case CPU_8080:
                        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, "%08lx: ", mon_use_real_mem ? adr : adr % mon_mem_size);
                                adr += disass_8080(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
                        }
                        break;

                case CPU_80x86:
                        while (adr <= end_adr && !mon_aborted()) {
                                uint8 buf[16];
                                for (int i=0; i<16; i++)
                                        buf[i] = mon_read_byte(adr + i);
                                fprintf(monout, "%08lx: ", mon_use_real_mem ? adr : adr % mon_mem_size);
                                adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, buf);
                        }
                        break;
        }

        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_8080(void)
{
        disassemble(CPU_8080);
}

void disassemble_80x86(void)
{
        disassemble(CPU_80x86);
}


/*
 *  Modify memory
 *  : addr bytestring
 */

void modify(void)
{
        uint32 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)
{
        uint32 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)
{
        uint32 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)
{
        uint32 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, "%08lx ", 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)
{
        uint32 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, "%08lx ", 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)
{
        uint32 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 {
                uint32 adr = start_adr;

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

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


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

void save_data(void)
{
        uint32 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 {
                uint32 adr = start_adr, end_adr = start_adr + size - 1;

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

                fprintf(monerr, "%08lx bytes written from %08lx to %08lx\n", size, mon_use_real_mem ? start_adr : start_adr % mon_mem_size, mon_use_real_mem ? end_adr : end_adr % mon_mem_size);
        }
}
Revision:	1.1
Committed:	1999-10-04T19:31:09Z (24 years, 7 months ago) by cebix
Branch:	MAIN
Branch point for:	cebix
Log Message:	Initial revision
#	Content
1	/*
2	* mon_cmd.cpp - mon standard commands
3	*
4	* (C) 1997-1999 Christian Bauer
5	*/
6
7	#include <stdio.h>
8	#include <string.h>
9	#include <unistd.h>
10
11	#include "mon.h"
12	#include "mon_cmd.h"
13	#include "mon_ppc.h"
14	#include "mon_68k.h"
15	#include "mon_x86.h"
16	#include "mon_6502.h"
17	#include "mon_8080.h"
18
19
20	/*
21	* range_args = [expression] [[COMMA] expression] END
22	*
23	* Read start address to "adr", end address to "end_adr".
24	* "adr" defaults to '.', "end_adr" defaults to '.'+def_range
25	*
26	* true: OK, false: Error
27	*/
28
29	static bool range_args(uint32 adr, uint32 end_adr, uint32 def_range)
30	{
31	*adr = mon_dot_address;
32	*end_adr = mon_dot_address + def_range;
33
34	if (mon_token == T_END)
35	return true;
36	else {
37	if (!mon_expression(adr))
38	return false;
39	end_adr = adr + def_range;
40	if (mon_token == T_END)
41	return true;
42	else {
43	if (mon_token == T_COMMA) mon_get_token();
44	if (!mon_expression(end_adr))
45	return false;
46	return mon_token == T_END;
47	}
48	}
49	}
50
51
52	/*
53	* byte_string = (expression \| STRING) {COMMA (expression \| STRING)} END
54	*/
55
56	static bool byte_string(uint8 *s, uint32 &len)
57	{
58	uint32 value;
59
60	len = 0;
61	goto start;
62
63	for (;;) {
64	if (mon_token == T_COMMA) {
65	mon_get_token();
66
67	start:
68	if (mon_token == T_STRING) {
69	uint8 p = (uint8 )mon_string;
70	while ((s++ = p++) != 0) ;
71	s--;
72	len += strlen(mon_string);
73	mon_get_token();
74	} else if (mon_expression(&value)) {
75	*s++ = value;
76	len++;
77	} else
78	return false;
79
80	} else if (mon_token == T_END)
81	return true;
82	else {
83	mon_error("',' expected");
84	return false;
85	}
86	}
87	}
88
89
90	/*
91	* Convert character to printable character
92	*/
93
94	static inline uint8 char2print(uint8 c)
95	{
96	return (c >= 0x20 && c <= 0x7e) ? c : '.';
97	}
98
99
100	/*
101	* Show version
102	* ver
103	*/
104
105	void version(void)
106	{
107	fprintf(monout, "mon V%d.%d\n", MON_VERSION, MON_REVISION);
108	}
109
110
111	/*
112	* Redirect output
113	* o [file]
114	*/
115
116	void redir_output(void)
117	{
118	// Close old file
119	if (monout != monerr) {
120	fclose(monout);
121	monout = monerr;
122	return;
123	}
124
125	// No argument given?
126	if (mon_token == T_END)
127	return;
128
129	// Otherwise open file
130	if (mon_token == T_STRING) {
131	mon_get_token();
132	if (mon_token != T_END) {
133	mon_error("Too many arguments");
134	return;
135	}
136	if (!(monout = fopen(mon_string, "w")))
137	mon_error("Unable to open file");
138	} else
139	mon_error("'\"' around file name expected");
140	}
141
142
143	/*
144	* Compute and display expression
145	* ? expression
146	*/
147
148	void print_expr(void)
149	{
150	uint32 val;
151
152	if (!mon_expression(&val))
153	return;
154	if (mon_token != T_END) {
155	mon_error("Too many arguments");
156	return;
157	}
158
159	if (val > 0x7fffffff) {
160	fprintf(monout, "Hex unsigned: $%08lx\n"
161	"Hex signed : -$%08lx\n"
162	"Dec unsigned: %lu\n"
163	"Dec signed : %ld\n", val, -val, val, val);
164	fprintf(monout, "Char : '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
165	} else {
166	fprintf(monout, "Hex : $%08lx\n"
167	"Dec : %ld\n", val, val);
168	fprintf(monout, "Char: '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
169	}
170	}
171
172
173	/*
174	* Execute shell command
175	* \ "command"
176	*/
177
178	void shell_command(void)
179	{
180	if (mon_token != T_STRING) {
181	mon_error("'\"' around command expected");
182	return;
183	}
184	mon_get_token();
185	if (mon_token != T_END) {
186	mon_error("Too many arguments");
187	return;
188	}
189	system(mon_string);
190	}
191
192
193	/*
194	* Memory dump
195	* m [start [end]]
196	*/
197
198	#define MEMDUMP_BPL 16 // Bytes per line
199
200	void memory_dump(void)
201	{
202	uint32 adr, end_adr;
203	uint8 mem[MEMDUMP_BPL + 1];
204
205	mem[MEMDUMP_BPL] = 0;
206
207	if (!range_args(&adr, &end_adr, 16 * MEMDUMP_BPL - 1)) // 16 lines unless end address specified
208	return;
209
210	while (adr <= end_adr && !mon_aborted()) {
211	fprintf(monout, "%08lx:", mon_use_real_mem ? adr: adr % mon_mem_size);
212	for (int i=0; i<MEMDUMP_BPL; i++, adr++) {
213	if (i % 4 == 0)
214	fprintf(monout, " %08lx", mon_read_word(adr));
215	mem[i] = char2print(mon_read_byte(adr));
216	}
217	fprintf(monout, " '%s'\n", mem);
218	}
219
220	mon_dot_address = adr;
221	}
222
223
224	/*
225	* ASCII dump
226	* i [start [end]]
227	*/
228
229	#define ASCIIDUMP_BPL 64 // Bytes per line
230
231	void ascii_dump(void)
232	{
233	uint32 adr, end_adr;
234	uint8 str[ASCIIDUMP_BPL + 1];
235
236	str[ASCIIDUMP_BPL] = 0;
237
238	if (!range_args(&adr, &end_adr, 16 * ASCIIDUMP_BPL - 1)) // 16 lines unless end address specified
239	return;
240
241	while (adr <= end_adr && !mon_aborted()) {
242	fprintf(monout, "%08lx:", mon_use_real_mem ? adr : adr % mon_mem_size);
243	for (int i=0; i<ASCIIDUMP_BPL; i++, adr++)
244	str[i] = char2print(mon_read_byte(adr));
245	fprintf(monout, " '%s'\n", str);
246	}
247
248	mon_dot_address = adr;
249	}
250
251
252	/*
253	* Disassemble
254	* d [start [end]]
255	* d65 [start [end]]
256	* d68 [start [end]]
257	* d80 [start [end]]
258	* d86 [start [end]]
259	*/
260
261	enum CPUType {
262	CPU_PPC,
263	CPU_6502,
264	CPU_680x0,
265	CPU_8080,
266	CPU_80x86
267	};
268
269	static void disassemble(CPUType type)
270	{
271	uint32 adr, end_adr;
272
273	if (!range_args(&adr, &end_adr, 16 * 4 - 1)) // 16 lines unless end address specified
274	return;
275
276	switch (type) {
277	case CPU_PPC:
278	while (adr <= end_adr && !mon_aborted()) {
279	uint32 w = mon_read_word(adr);
280	fprintf(monout, "%08lx: %08lx\t", mon_use_real_mem ? adr : adr % mon_mem_size, w);
281	disass_ppc(monout, mon_use_real_mem ? adr : adr % mon_mem_size, w);
282	adr += 4;
283	}
284	break;
285
286	case CPU_6502:
287	while (adr <= end_adr && !mon_aborted()) {
288	uint8 op = mon_read_byte(adr);
289	uint8 lo = mon_read_byte(adr + 1);
290	uint8 hi = mon_read_byte(adr + 2);
291	fprintf(monout, "%08lx: ", mon_use_real_mem ? adr : adr % mon_mem_size);
292	adr += disass_6502(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
293	}
294	break;
295
296	case CPU_680x0:
297	while (adr <= end_adr && !mon_aborted()) {
298	uint16 buf[8];
299	buf[0] = mon_read_half(adr);
300	buf[1] = mon_read_half(adr + 2);
301	buf[2] = mon_read_half(adr + 4);
302	buf[3] = mon_read_half(adr + 6);
303	buf[4] = mon_read_half(adr + 8);
304	buf[5] = mon_read_half(adr + 10);
305	buf[6] = mon_read_half(adr + 12);
306	buf[7] = mon_read_half(adr + 14);
307	fprintf(monout, "%08lx: ", mon_use_real_mem ? adr : adr % mon_mem_size);
308	adr += disass_68k(monout, mon_use_real_mem ? adr : adr % mon_mem_size, buf);
309	}
310	break;
311
312	case CPU_8080:
313	while (adr <= end_adr && !mon_aborted()) {
314	uint8 op = mon_read_byte(adr);
315	uint8 lo = mon_read_byte(adr + 1);
316	uint8 hi = mon_read_byte(adr + 2);
317	fprintf(monout, "%08lx: ", mon_use_real_mem ? adr : adr % mon_mem_size);
318	adr += disass_8080(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
319	}
320	break;
321
322	case CPU_80x86:
323	while (adr <= end_adr && !mon_aborted()) {
324	uint8 buf[16];
325	for (int i=0; i<16; i++)
326	buf[i] = mon_read_byte(adr + i);
327	fprintf(monout, "%08lx: ", mon_use_real_mem ? adr : adr % mon_mem_size);
328	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, buf);
329	}
330	break;
331	}
332
333	mon_dot_address = adr;
334	}
335
336	void disassemble_ppc(void)
337	{
338	disassemble(CPU_PPC);
339	}
340
341	void disassemble_6502(void)
342	{
343	disassemble(CPU_6502);
344	}
345
346	void disassemble_680x0(void)
347	{
348	disassemble(CPU_680x0);
349	}
350
351	void disassemble_8080(void)
352	{
353	disassemble(CPU_8080);
354	}
355
356	void disassemble_80x86(void)
357	{
358	disassemble(CPU_80x86);
359	}
360
361
362	/*
363	* Modify memory
364	* : addr bytestring
365	*/
366
367	void modify(void)
368	{
369	uint32 adr, len, src_adr = 0;
370	uint8 str[256];
371
372	if (!mon_expression(&adr))
373	return;
374	if (!byte_string(str, len))
375	return;
376
377	while (src_adr < len)
378	mon_write_byte(adr++, str[src_adr++]);
379
380	mon_dot_address = adr;
381	}
382
383
384	/*
385	* Fill
386	* f start end bytestring
387	*/
388
389	void fill(void)
390	{
391	uint32 adr, end_adr, len, src_adr = 0;
392	uint8 str[256];
393
394	if (!mon_expression(&adr))
395	return;
396	if (!mon_expression(&end_adr))
397	return;
398	if (!byte_string(str, len))
399	return;
400
401	while (adr <= end_adr)
402	mon_write_byte(adr++, str[src_adr++ % len]);
403	}
404
405
406	/*
407	* Transfer memory
408	* t start end dest
409	*/
410
411	void transfer(void)
412	{
413	uint32 adr, end_adr, dest;
414	int num;
415
416	if (!mon_expression(&adr))
417	return;
418	if (!mon_expression(&end_adr))
419	return;
420	if (!mon_expression(&dest))
421	return;
422	if (mon_token != T_END) {
423	mon_error("Too many arguments");
424	return;
425	}
426
427	num = end_adr - adr + 1;
428
429	if (dest < adr)
430	for (int i=0; i<num; i++)
431	mon_write_byte(dest++, mon_read_byte(adr++));
432	else {
433	dest += end_adr - adr;
434	for (int i=0; i<num; i++)
435	mon_write_byte(dest--, mon_read_byte(end_adr--));
436	}
437	}
438
439
440	/*
441	* Compare
442	* c start end dest
443	*/
444
445	void compare(void)
446	{
447	uint32 adr, end_adr, dest;
448	int num = 0;
449
450	if (!mon_expression(&adr))
451	return;
452	if (!mon_expression(&end_adr))
453	return;
454	if (!mon_expression(&dest))
455	return;
456	if (mon_token != T_END) {
457	mon_error("Too many arguments");
458	return;
459	}
460
461	while (adr <= end_adr && !mon_aborted()) {
462	if (mon_read_byte(adr) != mon_read_byte(dest)) {
463	fprintf(monout, "%08lx ", mon_use_real_mem ? adr : adr % mon_mem_size);
464	num++;
465	if (!(num & 7))
466	fputc('\n', monout);
467	}
468	adr++; dest++;
469	}
470
471	if (num & 7)
472	fputc('\n', monout);
473	fprintf(monout, "%d byte(s) different\n", num);
474	}
475
476
477	/*
478	* Search for byte string
479	* h start end bytestring
480	*/
481
482	void hunt(void)
483	{
484	uint32 adr, end_adr, len;
485	uint8 str[256];
486	int num = 0;
487
488	if (!mon_expression(&adr))
489	return;
490	if (!mon_expression(&end_adr))
491	return;
492	if (!byte_string(str, len))
493	return;
494
495	while ((adr+len-1) <= end_adr && !mon_aborted()) {
496	uint32 i;
497
498	for (i=0; i<len; i++)
499	if (mon_read_byte(adr + i) != str[i])
500	break;
501
502	if (i == len) {
503	fprintf(monout, "%08lx ", mon_use_real_mem ? adr : adr % mon_mem_size);
504	num++;
505	if (num == 1)
506	mon_dot_address = adr;
507	if (!(num & 7))
508	fputc('\n', monout);
509	}
510	adr++;
511	}
512
513	if (num & 7)
514	fputc('\n', monout);
515	fprintf(monout, "Found %d occurrences\n", num);
516	}
517
518
519	/*
520	* Load data
521	* [ start "file"
522	*/
523
524	void load_data(void)
525	{
526	uint32 start_adr;
527	FILE *file;
528	int fc;
529
530	if (!mon_expression(&start_adr))
531	return;
532	if (mon_token == T_END) {
533	mon_error("Missing file name");
534	return;
535	}
536	if (mon_token != T_STRING) {
537	mon_error("'\"' around file name expected");
538	return;
539	}
540	mon_get_token();
541	if (mon_token != T_END) {
542	mon_error("Too many arguments");
543	return;
544	}
545
546	if (!(file = fopen(mon_string, "rb")))
547	mon_error("Unable to open file");
548	else {
549	uint32 adr = start_adr;
550
551	while ((fc = fgetc(file)) != EOF)
552	mon_write_byte(adr++, fc);
553	fclose(file);
554
555	fprintf(monerr, "%08lx bytes read from %08lx to %08lx\n", adr - start_adr, mon_use_real_mem ? start_adr : start_adr % mon_mem_size, mon_use_real_mem ? adr-1 : (adr-1) % mon_mem_size);
556	mon_dot_address = adr;
557	}
558	}
559
560
561	/*
562	* Save data
563	* ] start size "file"
564	*/
565
566	void save_data(void)
567	{
568	uint32 start_adr, size;
569	FILE *file;
570
571	if (!mon_expression(&start_adr))
572	return;
573	if (!mon_expression(&size))
574	return;
575	if (mon_token == T_END) {
576	mon_error("Missing file name");
577	return;
578	}
579	if (mon_token != T_STRING) {
580	mon_error("'\"' around file name expected");
581	return;
582	}
583	mon_get_token();
584	if (mon_token != T_END) {
585	mon_error("Too many arguments");
586	return;
587	}
588
589	if (!(file = fopen(mon_string, "wb")))
590	mon_error("Unable to create file");
591	else {
592	uint32 adr = start_adr, end_adr = start_adr + size - 1;
593
594	while (adr <= end_adr)
595	fputc(mon_read_byte(adr++), file);
596	fclose(file);
597
598	fprintf(monerr, "%08lx bytes written from %08lx to %08lx\n", size, mon_use_real_mem ? start_adr : start_adr % mon_mem_size, mon_use_real_mem ? end_adr : end_adr % mon_mem_size);
599	}
600	}