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_disass.h"

#ifndef VERSION
#define VERSION "2"
#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(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" 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)
{
        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;
}


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

void binary_dump(void)
{
        uint32 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, "%08x:", 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]]
 */

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()) {
                                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);
                        }
                        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()) {
                                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);
                        }
                        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:	1.7
Committed:	2000-09-25T12:44:34Z (24 years, 2 months ago) by cebix
Branch:	MAIN
Changes since 1.6:	+3 -19 lines
Log Message:	- replaced 680x0 and 80x86 disassemblers with the ones from GNU binutils - 680x0 disassembler shows symbolic MacOS low memory globals
#	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	cebix	1.7	#include "mon_disass.h"
28	cebix	1.1
29	hellwig	1.6	#ifndef VERSION
30			#define VERSION "2"
31			#endif
32
33	cebix	1.1
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	1.5	fprintf(monout, "mon V" VERSION "\n");
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	cebix	1.5	}
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			uint32 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, "%08x:", 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	cebix	1.1	}
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			*/
302
303			enum CPUType {
304			CPU_PPC,
305			CPU_6502,
306			CPU_680x0,
307			CPU_8080,
308			CPU_80x86
309			};
310
311			static void disassemble(CPUType type)
312			{
313			uint32 adr, end_adr;
314
315			if (!range_args(&adr, &end_adr, 16 * 4 - 1)) // 16 lines unless end address specified
316			return;
317
318			switch (type) {
319			case CPU_PPC:
320			while (adr <= end_adr && !mon_aborted()) {
321			uint32 w = mon_read_word(adr);
322	cebix	1.3	fprintf(monout, "%08x: %08x\t", mon_use_real_mem ? adr : adr % mon_mem_size, w);
323	cebix	1.1	disass_ppc(monout, mon_use_real_mem ? adr : adr % mon_mem_size, w);
324			adr += 4;
325			}
326			break;
327
328			case CPU_6502:
329			while (adr <= end_adr && !mon_aborted()) {
330			uint8 op = mon_read_byte(adr);
331			uint8 lo = mon_read_byte(adr + 1);
332			uint8 hi = mon_read_byte(adr + 2);
333	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
334	cebix	1.1	adr += disass_6502(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
335			}
336			break;
337
338			case CPU_680x0:
339			while (adr <= end_adr && !mon_aborted()) {
340	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
341	cebix	1.7	adr += disass_68k(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
342	cebix	1.1	}
343			break;
344
345			case CPU_8080:
346			while (adr <= end_adr && !mon_aborted()) {
347			uint8 op = mon_read_byte(adr);
348			uint8 lo = mon_read_byte(adr + 1);
349			uint8 hi = mon_read_byte(adr + 2);
350	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
351	cebix	1.1	adr += disass_8080(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
352			}
353			break;
354
355			case CPU_80x86:
356			while (adr <= end_adr && !mon_aborted()) {
357	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
358	cebix	1.7	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
359	cebix	1.1	}
360			break;
361			}
362
363			mon_dot_address = adr;
364			}
365
366			void disassemble_ppc(void)
367			{
368			disassemble(CPU_PPC);
369			}
370
371			void disassemble_6502(void)
372			{
373			disassemble(CPU_6502);
374			}
375
376			void disassemble_680x0(void)
377			{
378			disassemble(CPU_680x0);
379			}
380
381			void disassemble_8080(void)
382			{
383			disassemble(CPU_8080);
384			}
385
386			void disassemble_80x86(void)
387			{
388			disassemble(CPU_80x86);
389			}
390
391
392			/*
393			* Modify memory
394			* : addr bytestring
395			*/
396
397			void modify(void)
398			{
399			uint32 adr, len, src_adr = 0;
400			uint8 str[256];
401
402			if (!mon_expression(&adr))
403			return;
404			if (!byte_string(str, len))
405			return;
406
407			while (src_adr < len)
408			mon_write_byte(adr++, str[src_adr++]);
409
410			mon_dot_address = adr;
411			}
412
413
414			/*
415			* Fill
416			* f start end bytestring
417			*/
418
419			void fill(void)
420			{
421			uint32 adr, end_adr, len, src_adr = 0;
422			uint8 str[256];
423
424			if (!mon_expression(&adr))
425			return;
426			if (!mon_expression(&end_adr))
427			return;
428			if (!byte_string(str, len))
429			return;
430
431			while (adr <= end_adr)
432			mon_write_byte(adr++, str[src_adr++ % len]);
433			}
434
435
436			/*
437			* Transfer memory
438			* t start end dest
439			*/
440
441			void transfer(void)
442			{
443			uint32 adr, end_adr, dest;
444			int num;
445
446			if (!mon_expression(&adr))
447			return;
448			if (!mon_expression(&end_adr))
449			return;
450			if (!mon_expression(&dest))
451			return;
452			if (mon_token != T_END) {
453			mon_error("Too many arguments");
454			return;
455			}
456
457			num = end_adr - adr + 1;
458
459			if (dest < adr)
460			for (int i=0; i<num; i++)
461			mon_write_byte(dest++, mon_read_byte(adr++));
462			else {
463			dest += end_adr - adr;
464			for (int i=0; i<num; i++)
465			mon_write_byte(dest--, mon_read_byte(end_adr--));
466			}
467			}
468
469
470			/*
471			* Compare
472			* c start end dest
473			*/
474
475			void compare(void)
476			{
477			uint32 adr, end_adr, dest;
478			int num = 0;
479
480			if (!mon_expression(&adr))
481			return;
482			if (!mon_expression(&end_adr))
483			return;
484			if (!mon_expression(&dest))
485			return;
486			if (mon_token != T_END) {
487			mon_error("Too many arguments");
488			return;
489			}
490
491			while (adr <= end_adr && !mon_aborted()) {
492			if (mon_read_byte(adr) != mon_read_byte(dest)) {
493	cebix	1.3	fprintf(monout, "%08x ", mon_use_real_mem ? adr : adr % mon_mem_size);
494	cebix	1.1	num++;
495			if (!(num & 7))
496			fputc('\n', monout);
497			}
498			adr++; dest++;
499			}
500
501			if (num & 7)
502			fputc('\n', monout);
503			fprintf(monout, "%d byte(s) different\n", num);
504			}
505
506
507			/*
508			* Search for byte string
509			* h start end bytestring
510			*/
511
512			void hunt(void)
513			{
514			uint32 adr, end_adr, len;
515			uint8 str[256];
516			int num = 0;
517
518			if (!mon_expression(&adr))
519			return;
520			if (!mon_expression(&end_adr))
521			return;
522			if (!byte_string(str, len))
523			return;
524
525			while ((adr+len-1) <= end_adr && !mon_aborted()) {
526			uint32 i;
527
528			for (i=0; i<len; i++)
529			if (mon_read_byte(adr + i) != str[i])
530			break;
531
532			if (i == len) {
533	cebix	1.3	fprintf(monout, "%08x ", mon_use_real_mem ? adr : adr % mon_mem_size);
534	cebix	1.1	num++;
535			if (num == 1)
536			mon_dot_address = adr;
537			if (!(num & 7))
538			fputc('\n', monout);
539			}
540			adr++;
541			}
542
543			if (num & 7)
544			fputc('\n', monout);
545			fprintf(monout, "Found %d occurrences\n", num);
546			}
547
548
549			/*
550			* Load data
551			* [ start "file"
552			*/
553
554			void load_data(void)
555			{
556			uint32 start_adr;
557			FILE *file;
558			int fc;
559
560			if (!mon_expression(&start_adr))
561			return;
562			if (mon_token == T_END) {
563			mon_error("Missing file name");
564			return;
565			}
566			if (mon_token != T_STRING) {
567			mon_error("'\"' around file name expected");
568			return;
569			}
570			mon_get_token();
571			if (mon_token != T_END) {
572			mon_error("Too many arguments");
573			return;
574			}
575
576			if (!(file = fopen(mon_string, "rb")))
577			mon_error("Unable to open file");
578			else {
579			uint32 adr = start_adr;
580
581			while ((fc = fgetc(file)) != EOF)
582			mon_write_byte(adr++, fc);
583			fclose(file);
584
585	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);
586	cebix	1.1	mon_dot_address = adr;
587			}
588			}
589
590
591			/*
592			* Save data
593			* ] start size "file"
594			*/
595
596			void save_data(void)
597			{
598			uint32 start_adr, size;
599			FILE *file;
600
601			if (!mon_expression(&start_adr))
602			return;
603			if (!mon_expression(&size))
604			return;
605			if (mon_token == T_END) {
606			mon_error("Missing file name");
607			return;
608			}
609			if (mon_token != T_STRING) {
610			mon_error("'\"' around file name expected");
611			return;
612			}
613			mon_get_token();
614			if (mon_token != T_END) {
615			mon_error("Too many arguments");
616			return;
617			}
618
619			if (!(file = fopen(mon_string, "wb")))
620			mon_error("Unable to create file");
621			else {
622			uint32 adr = start_adr, end_adr = start_adr + size - 1;
623
624			while (adr <= end_adr)
625			fputc(mon_read_byte(adr++), file);
626			fclose(file);
627
628	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);
629	cebix	1.1	}
630			}