mon/src/mon_cmd.cpp

/*
 *  mon_cmd.cpp - mon standard commands
 *
 *  mon (C) 1997-1999 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_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_MAJOR, MON_VERSION_MINOR);
}


/*
 *  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:  $%08x\n"
                                          "Hex signed  : -$%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)
{
        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, "%08x:", 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)
{
        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, "%08x:", 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, "%08x: %08x\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, "%08x: ", 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, "%08x: ", 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, "%08x: ", 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, "%08x: ", 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, "%08x ", 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, "%08x ", 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, "%08x bytes read from %08x to %08x\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, "%08x bytes written from %08x to %08x\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:	1.4
Committed:	1999-10-25T08:04:47Z (25 years ago) by cebix
Branch:	MAIN
Changes since 1.3:	+3 -2 lines
Log Message:	- Unix: added mkinstalldirs to "make install" target - user-defined functions for memory access can be supplied
#	User	Rev	Content
1	cebix	1.1	/*
2			* mon_cmd.cpp - mon standard commands
3			*
4	cebix	1.2	* mon (C) 1997-1999 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	cebix	1.1	*/
20
21	cebix	1.2	#include "sysdeps.h"
22	cebix	1.1
23	cebix	1.4	#include <stdlib.h>
24
25	cebix	1.1	#include "mon.h"
26			#include "mon_cmd.h"
27			#include "mon_ppc.h"
28			#include "mon_68k.h"
29			#include "mon_x86.h"
30			#include "mon_6502.h"
31			#include "mon_8080.h"
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(uint32 adr, uint32 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, uint32 &len)
71			{
72			uint32 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	cebix	1.4	fprintf(monout, "mon V%d.%d\n", MON_VERSION_MAJOR, MON_VERSION_MINOR);
122	cebix	1.1	}
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			uint32 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	cebix	1.3	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	cebix	1.1	fprintf(monout, "Char : '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
179			} else {
180	cebix	1.3	fprintf(monout, "Hex : $%08x\n"
181			"Dec : %d\n", val, val);
182	cebix	1.1	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			uint32 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	cebix	1.3	fprintf(monout, "%08x:", mon_use_real_mem ? adr: adr % mon_mem_size);
226	cebix	1.1	for (int i=0; i<MEMDUMP_BPL; i++, adr++) {
227			if (i % 4 == 0)
228	cebix	1.3	fprintf(monout, " %08x", mon_read_word(adr));
229	cebix	1.1	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			uint32 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	cebix	1.3	fprintf(monout, "%08x:", mon_use_real_mem ? adr : adr % mon_mem_size);
257	cebix	1.1	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			* Disassemble
268			* d [start [end]]
269			* d65 [start [end]]
270			* d68 [start [end]]
271			* d80 [start [end]]
272			* d86 [start [end]]
273			*/
274
275			enum CPUType {
276			CPU_PPC,
277			CPU_6502,
278			CPU_680x0,
279			CPU_8080,
280			CPU_80x86
281			};
282
283			static void disassemble(CPUType type)
284			{
285			uint32 adr, end_adr;
286
287			if (!range_args(&adr, &end_adr, 16 * 4 - 1)) // 16 lines unless end address specified
288			return;
289
290			switch (type) {
291			case CPU_PPC:
292			while (adr <= end_adr && !mon_aborted()) {
293			uint32 w = mon_read_word(adr);
294	cebix	1.3	fprintf(monout, "%08x: %08x\t", mon_use_real_mem ? adr : adr % mon_mem_size, w);
295	cebix	1.1	disass_ppc(monout, mon_use_real_mem ? adr : adr % mon_mem_size, w);
296			adr += 4;
297			}
298			break;
299
300			case CPU_6502:
301			while (adr <= end_adr && !mon_aborted()) {
302			uint8 op = mon_read_byte(adr);
303			uint8 lo = mon_read_byte(adr + 1);
304			uint8 hi = mon_read_byte(adr + 2);
305	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
306	cebix	1.1	adr += disass_6502(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
307			}
308			break;
309
310			case CPU_680x0:
311			while (adr <= end_adr && !mon_aborted()) {
312			uint16 buf[8];
313			buf[0] = mon_read_half(adr);
314			buf[1] = mon_read_half(adr + 2);
315			buf[2] = mon_read_half(adr + 4);
316			buf[3] = mon_read_half(adr + 6);
317			buf[4] = mon_read_half(adr + 8);
318			buf[5] = mon_read_half(adr + 10);
319			buf[6] = mon_read_half(adr + 12);
320			buf[7] = mon_read_half(adr + 14);
321	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
322	cebix	1.1	adr += disass_68k(monout, mon_use_real_mem ? adr : adr % mon_mem_size, buf);
323			}
324			break;
325
326			case CPU_8080:
327			while (adr <= end_adr && !mon_aborted()) {
328			uint8 op = mon_read_byte(adr);
329			uint8 lo = mon_read_byte(adr + 1);
330			uint8 hi = mon_read_byte(adr + 2);
331	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
332	cebix	1.1	adr += disass_8080(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
333			}
334			break;
335
336			case CPU_80x86:
337			while (adr <= end_adr && !mon_aborted()) {
338			uint8 buf[16];
339			for (int i=0; i<16; i++)
340			buf[i] = mon_read_byte(adr + i);
341	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
342	cebix	1.1	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, buf);
343			}
344			break;
345			}
346
347			mon_dot_address = adr;
348			}
349
350			void disassemble_ppc(void)
351			{
352			disassemble(CPU_PPC);
353			}
354
355			void disassemble_6502(void)
356			{
357			disassemble(CPU_6502);
358			}
359
360			void disassemble_680x0(void)
361			{
362			disassemble(CPU_680x0);
363			}
364
365			void disassemble_8080(void)
366			{
367			disassemble(CPU_8080);
368			}
369
370			void disassemble_80x86(void)
371			{
372			disassemble(CPU_80x86);
373			}
374
375
376			/*
377			* Modify memory
378			* : addr bytestring
379			*/
380
381			void modify(void)
382			{
383			uint32 adr, len, src_adr = 0;
384			uint8 str[256];
385
386			if (!mon_expression(&adr))
387			return;
388			if (!byte_string(str, len))
389			return;
390
391			while (src_adr < len)
392			mon_write_byte(adr++, str[src_adr++]);
393
394			mon_dot_address = adr;
395			}
396
397
398			/*
399			* Fill
400			* f start end bytestring
401			*/
402
403			void fill(void)
404			{
405			uint32 adr, end_adr, len, src_adr = 0;
406			uint8 str[256];
407
408			if (!mon_expression(&adr))
409			return;
410			if (!mon_expression(&end_adr))
411			return;
412			if (!byte_string(str, len))
413			return;
414
415			while (adr <= end_adr)
416			mon_write_byte(adr++, str[src_adr++ % len]);
417			}
418
419
420			/*
421			* Transfer memory
422			* t start end dest
423			*/
424
425			void transfer(void)
426			{
427			uint32 adr, end_adr, dest;
428			int num;
429
430			if (!mon_expression(&adr))
431			return;
432			if (!mon_expression(&end_adr))
433			return;
434			if (!mon_expression(&dest))
435			return;
436			if (mon_token != T_END) {
437			mon_error("Too many arguments");
438			return;
439			}
440
441			num = end_adr - adr + 1;
442
443			if (dest < adr)
444			for (int i=0; i<num; i++)
445			mon_write_byte(dest++, mon_read_byte(adr++));
446			else {
447			dest += end_adr - adr;
448			for (int i=0; i<num; i++)
449			mon_write_byte(dest--, mon_read_byte(end_adr--));
450			}
451			}
452
453
454			/*
455			* Compare
456			* c start end dest
457			*/
458
459			void compare(void)
460			{
461			uint32 adr, end_adr, dest;
462			int num = 0;
463
464			if (!mon_expression(&adr))
465			return;
466			if (!mon_expression(&end_adr))
467			return;
468			if (!mon_expression(&dest))
469			return;
470			if (mon_token != T_END) {
471			mon_error("Too many arguments");
472			return;
473			}
474
475			while (adr <= end_adr && !mon_aborted()) {
476			if (mon_read_byte(adr) != mon_read_byte(dest)) {
477	cebix	1.3	fprintf(monout, "%08x ", mon_use_real_mem ? adr : adr % mon_mem_size);
478	cebix	1.1	num++;
479			if (!(num & 7))
480			fputc('\n', monout);
481			}
482			adr++; dest++;
483			}
484
485			if (num & 7)
486			fputc('\n', monout);
487			fprintf(monout, "%d byte(s) different\n", num);
488			}
489
490
491			/*
492			* Search for byte string
493			* h start end bytestring
494			*/
495
496			void hunt(void)
497			{
498			uint32 adr, end_adr, len;
499			uint8 str[256];
500			int num = 0;
501
502			if (!mon_expression(&adr))
503			return;
504			if (!mon_expression(&end_adr))
505			return;
506			if (!byte_string(str, len))
507			return;
508
509			while ((adr+len-1) <= end_adr && !mon_aborted()) {
510			uint32 i;
511
512			for (i=0; i<len; i++)
513			if (mon_read_byte(adr + i) != str[i])
514			break;
515
516			if (i == len) {
517	cebix	1.3	fprintf(monout, "%08x ", mon_use_real_mem ? adr : adr % mon_mem_size);
518	cebix	1.1	num++;
519			if (num == 1)
520			mon_dot_address = adr;
521			if (!(num & 7))
522			fputc('\n', monout);
523			}
524			adr++;
525			}
526
527			if (num & 7)
528			fputc('\n', monout);
529			fprintf(monout, "Found %d occurrences\n", num);
530			}
531
532
533			/*
534			* Load data
535			* [ start "file"
536			*/
537
538			void load_data(void)
539			{
540			uint32 start_adr;
541			FILE *file;
542			int fc;
543
544			if (!mon_expression(&start_adr))
545			return;
546			if (mon_token == T_END) {
547			mon_error("Missing file name");
548			return;
549			}
550			if (mon_token != T_STRING) {
551			mon_error("'\"' around file name expected");
552			return;
553			}
554			mon_get_token();
555			if (mon_token != T_END) {
556			mon_error("Too many arguments");
557			return;
558			}
559
560			if (!(file = fopen(mon_string, "rb")))
561			mon_error("Unable to open file");
562			else {
563			uint32 adr = start_adr;
564
565			while ((fc = fgetc(file)) != EOF)
566			mon_write_byte(adr++, fc);
567			fclose(file);
568
569	cebix	1.3	fprintf(monerr, "%08x bytes read from %08x to %08x\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);
570	cebix	1.1	mon_dot_address = adr;
571			}
572			}
573
574
575			/*
576			* Save data
577			* ] start size "file"
578			*/
579
580			void save_data(void)
581			{
582			uint32 start_adr, size;
583			FILE *file;
584
585			if (!mon_expression(&start_adr))
586			return;
587			if (!mon_expression(&size))
588			return;
589			if (mon_token == T_END) {
590			mon_error("Missing file name");
591			return;
592			}
593			if (mon_token != T_STRING) {
594			mon_error("'\"' around file name expected");
595			return;
596			}
597			mon_get_token();
598			if (mon_token != T_END) {
599			mon_error("Too many arguments");
600			return;
601			}
602
603			if (!(file = fopen(mon_string, "wb")))
604			mon_error("Unable to create file");
605			else {
606			uint32 adr = start_adr, end_adr = start_adr + size - 1;
607
608			while (adr <= end_adr)
609			fputc(mon_read_byte(adr++), file);
610			fclose(file);
611
612	cebix	1.3	fprintf(monerr, "%08x bytes written from %08x to %08x\n", size, mon_use_real_mem ? start_adr : start_adr % mon_mem_size, mon_use_real_mem ? end_adr : end_adr % mon_mem_size);
613	cebix	1.1	}
614			}