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_32,
        CPU_80x86_16
};

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_32:
                        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, false);
                        }
                        break;

                case CPU_80x86_16:
                        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, true);
                        }
                        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_32(void)
{
        disassemble(CPU_80x86_32);
}

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


/*
 *  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:	1.8
Committed:	2000-10-06T00:04:22Z (23 years, 7 months ago) by cebix
Branch:	MAIN
Changes since 1.7:	+18 -5 lines
Log Message:	new command "d8086" for disassembling 16-bit x86 code
#	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	cebix	1.8	CPU_80x86_32,
309			CPU_80x86_16
310	cebix	1.1	};
311
312			static void disassemble(CPUType type)
313			{
314			uint32 adr, end_adr;
315
316			if (!range_args(&adr, &end_adr, 16 * 4 - 1)) // 16 lines unless end address specified
317			return;
318
319			switch (type) {
320			case CPU_PPC:
321			while (adr <= end_adr && !mon_aborted()) {
322			uint32 w = mon_read_word(adr);
323	cebix	1.3	fprintf(monout, "%08x: %08x\t", mon_use_real_mem ? adr : adr % mon_mem_size, w);
324	cebix	1.1	disass_ppc(monout, mon_use_real_mem ? adr : adr % mon_mem_size, w);
325			adr += 4;
326			}
327			break;
328
329			case CPU_6502:
330			while (adr <= end_adr && !mon_aborted()) {
331			uint8 op = mon_read_byte(adr);
332			uint8 lo = mon_read_byte(adr + 1);
333			uint8 hi = mon_read_byte(adr + 2);
334	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
335	cebix	1.1	adr += disass_6502(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
336			}
337			break;
338
339			case CPU_680x0:
340			while (adr <= end_adr && !mon_aborted()) {
341	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
342	cebix	1.7	adr += disass_68k(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
343	cebix	1.1	}
344			break;
345
346			case CPU_8080:
347			while (adr <= end_adr && !mon_aborted()) {
348			uint8 op = mon_read_byte(adr);
349			uint8 lo = mon_read_byte(adr + 1);
350			uint8 hi = mon_read_byte(adr + 2);
351	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
352	cebix	1.1	adr += disass_8080(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
353			}
354			break;
355
356	cebix	1.8	case CPU_80x86_32:
357	cebix	1.1	while (adr <= end_adr && !mon_aborted()) {
358	cebix	1.3	fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
359	cebix	1.8	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, false);
360			}
361			break;
362
363			case CPU_80x86_16:
364			while (adr <= end_adr && !mon_aborted()) {
365			fprintf(monout, "%08x: ", mon_use_real_mem ? adr : adr % mon_mem_size);
366			adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, true);
367	cebix	1.1	}
368			break;
369			}
370
371			mon_dot_address = adr;
372			}
373
374			void disassemble_ppc(void)
375			{
376			disassemble(CPU_PPC);
377			}
378
379			void disassemble_6502(void)
380			{
381			disassemble(CPU_6502);
382			}
383
384			void disassemble_680x0(void)
385			{
386			disassemble(CPU_680x0);
387			}
388
389			void disassemble_8080(void)
390			{
391			disassemble(CPU_8080);
392			}
393
394	cebix	1.8	void disassemble_80x86_32(void)
395			{
396			disassemble(CPU_80x86_32);
397			}
398
399			void disassemble_80x86_16(void)
400	cebix	1.1	{
401	cebix	1.8	disassemble(CPU_80x86_16);
402	cebix	1.1	}
403
404
405			/*
406			* Modify memory
407			* : addr bytestring
408			*/
409
410			void modify(void)
411			{
412			uint32 adr, len, src_adr = 0;
413			uint8 str[256];
414
415			if (!mon_expression(&adr))
416			return;
417			if (!byte_string(str, len))
418			return;
419
420			while (src_adr < len)
421			mon_write_byte(adr++, str[src_adr++]);
422
423			mon_dot_address = adr;
424			}
425
426
427			/*
428			* Fill
429			* f start end bytestring
430			*/
431
432			void fill(void)
433			{
434			uint32 adr, end_adr, len, src_adr = 0;
435			uint8 str[256];
436
437			if (!mon_expression(&adr))
438			return;
439			if (!mon_expression(&end_adr))
440			return;
441			if (!byte_string(str, len))
442			return;
443
444			while (adr <= end_adr)
445			mon_write_byte(adr++, str[src_adr++ % len]);
446			}
447
448
449			/*
450			* Transfer memory
451			* t start end dest
452			*/
453
454			void transfer(void)
455			{
456			uint32 adr, end_adr, dest;
457			int num;
458
459			if (!mon_expression(&adr))
460			return;
461			if (!mon_expression(&end_adr))
462			return;
463			if (!mon_expression(&dest))
464			return;
465			if (mon_token != T_END) {
466			mon_error("Too many arguments");
467			return;
468			}
469
470			num = end_adr - adr + 1;
471
472			if (dest < adr)
473			for (int i=0; i<num; i++)
474			mon_write_byte(dest++, mon_read_byte(adr++));
475			else {
476			dest += end_adr - adr;
477			for (int i=0; i<num; i++)
478			mon_write_byte(dest--, mon_read_byte(end_adr--));
479			}
480			}
481
482
483			/*
484			* Compare
485			* c start end dest
486			*/
487
488			void compare(void)
489			{
490			uint32 adr, end_adr, dest;
491			int num = 0;
492
493			if (!mon_expression(&adr))
494			return;
495			if (!mon_expression(&end_adr))
496			return;
497			if (!mon_expression(&dest))
498			return;
499			if (mon_token != T_END) {
500			mon_error("Too many arguments");
501			return;
502			}
503
504			while (adr <= end_adr && !mon_aborted()) {
505			if (mon_read_byte(adr) != mon_read_byte(dest)) {
506	cebix	1.3	fprintf(monout, "%08x ", mon_use_real_mem ? adr : adr % mon_mem_size);
507	cebix	1.1	num++;
508			if (!(num & 7))
509			fputc('\n', monout);
510			}
511			adr++; dest++;
512			}
513
514			if (num & 7)
515			fputc('\n', monout);
516			fprintf(monout, "%d byte(s) different\n", num);
517			}
518
519
520			/*
521			* Search for byte string
522			* h start end bytestring
523			*/
524
525			void hunt(void)
526			{
527			uint32 adr, end_adr, len;
528			uint8 str[256];
529			int num = 0;
530
531			if (!mon_expression(&adr))
532			return;
533			if (!mon_expression(&end_adr))
534			return;
535			if (!byte_string(str, len))
536			return;
537
538			while ((adr+len-1) <= end_adr && !mon_aborted()) {
539			uint32 i;
540
541			for (i=0; i<len; i++)
542			if (mon_read_byte(adr + i) != str[i])
543			break;
544
545			if (i == len) {
546	cebix	1.3	fprintf(monout, "%08x ", mon_use_real_mem ? adr : adr % mon_mem_size);
547	cebix	1.1	num++;
548			if (num == 1)
549			mon_dot_address = adr;
550			if (!(num & 7))
551			fputc('\n', monout);
552			}
553			adr++;
554			}
555
556			if (num & 7)
557			fputc('\n', monout);
558			fprintf(monout, "Found %d occurrences\n", num);
559			}
560
561
562			/*
563			* Load data
564			* [ start "file"
565			*/
566
567			void load_data(void)
568			{
569			uint32 start_adr;
570			FILE *file;
571			int fc;
572
573			if (!mon_expression(&start_adr))
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, "rb")))
590			mon_error("Unable to open file");
591			else {
592			uint32 adr = start_adr;
593
594			while ((fc = fgetc(file)) != EOF)
595			mon_write_byte(adr++, fc);
596			fclose(file);
597
598	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);
599	cebix	1.1	mon_dot_address = adr;
600			}
601			}
602
603
604			/*
605			* Save data
606			* ] start size "file"
607			*/
608
609			void save_data(void)
610			{
611			uint32 start_adr, size;
612			FILE *file;
613
614			if (!mon_expression(&start_adr))
615			return;
616			if (!mon_expression(&size))
617			return;
618			if (mon_token == T_END) {
619			mon_error("Missing file name");
620			return;
621			}
622			if (mon_token != T_STRING) {
623			mon_error("'\"' around file name expected");
624			return;
625			}
626			mon_get_token();
627			if (mon_token != T_END) {
628			mon_error("Too many arguments");
629			return;
630			}
631
632			if (!(file = fopen(mon_string, "wb")))
633			mon_error("Unable to create file");
634			else {
635			uint32 adr = start_adr, end_adr = start_adr + size - 1;
636
637			while (adr <= end_adr)
638			fputc(mon_read_byte(adr++), file);
639			fclose(file);
640
641	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);
642	cebix	1.1	}
643			}