mon/src/mon_cmd.cpp

/*
 *  mon_cmd.cpp - cxmon standard commands
 *
 *  cxmon (C) 1997-2004 Christian Bauer, Marc Hellwig
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "sysdeps.h"

#include <stdlib.h>

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

#ifndef VERSION
#define VERSION "3"
#endif


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

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

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


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

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

        static const int GRANULARITY = 16; // must be a power of 2
        str = NULL;
        len = 0;
        goto start;

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

start:
                        if (mon_token == T_STRING) {
                                unsigned n = strlen(mon_string);
                                str = (uint8 *)realloc(str, (len + n - 1 + GRANULARITY) & ~(GRANULARITY - 1));
                                memcpy(str + len, mon_string, n);
                                len += n;
                                mon_get_token();
                        } else if (mon_expression(&value)) {
                                str = (uint8 *)realloc(str, (len + GRANULARITY) & ~(GRANULARITY - 1));
                                str[len] = value;
                                len++;
                        } else {
                                if (str)
                                        free(str);
                                return false;
                        }

                } else if (mon_token == T_END) {
                        return true;
                } else {
                        mon_error("',' expected");
                        if (str)
                                free(str);
                        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, "cxmon V" VERSION "\n");
}


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

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

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

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


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

void print_expr(void)
{
        uintptr val;

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

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


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

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


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

#define MEMDUMP_BPL 16  // Bytes per line

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

        mem[MEMDUMP_BPL] = 0;

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

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

        mon_dot_address = adr;
}


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

#define ASCIIDUMP_BPL 64  // Bytes per line

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

        str[ASCIIDUMP_BPL] = 0;

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

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

        mon_dot_address = adr;
}


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

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

        str[8] = 0;

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

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

        mon_dot_address = adr;
}


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

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

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

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

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

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

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

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

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

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

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

        mon_dot_address = adr;
}

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

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

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

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

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

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

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


/*
 *  Modify memory
 *  : addr bytestring
 */

void modify(void)
{
        uintptr adr, len, src_adr = 0;
        uint8 *str;

        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;

        free(str);
}


/*
 *  Fill
 *  f start end bytestring
 */

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

        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]);

        free(str);
}


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

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

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

        num = end_adr - adr + 1;

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


/*
 *  Compare
 *  c start end dest
 */

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

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

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

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


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

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

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

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

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

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

        free(str);

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


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

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

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

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

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

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


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

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

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

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

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

                fprintf(monerr, "%08x bytes written from %0*lx to %0*lx\n", size, int(2 * sizeof(adr)), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, int(2 * sizeof(adr)), mon_use_real_mem ? end_adr : end_adr % mon_mem_size);
        }
}
Revision:	1.19
Committed:	2007-01-21T17:32:05Z (17 years, 10 months ago) by cebix
Branch:	MAIN
CVS Tags:	release_3-2
Changes since 1.18:	+14 -15 lines
Log Message:	fixed compiler warnings
#	Content
1	/*
2	* mon_cmd.cpp - cxmon standard commands
3	*
4	* cxmon (C) 1997-2004 Christian Bauer, Marc Hellwig
5	*
6	* This program is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*/
20
21	#include "sysdeps.h"
22
23	#include <stdlib.h>
24
25	#include "mon.h"
26	#include "mon_cmd.h"
27	#include "mon_disass.h"
28
29	#ifndef VERSION
30	#define VERSION "3"
31	#endif
32
33
34	/*
35	* range_args = [expression] [[COMMA] expression] END
36	*
37	* Read start address to "adr", end address to "end_adr".
38	* "adr" defaults to '.', "end_adr" defaults to '.'+def_range
39	*
40	* true: OK, false: Error
41	*/
42
43	static bool range_args(uintptr adr, uintptr end_adr, uint32 def_range)
44	{
45	*adr = mon_dot_address;
46	*end_adr = mon_dot_address + def_range;
47
48	if (mon_token == T_END)
49	return true;
50	else {
51	if (!mon_expression(adr))
52	return false;
53	end_adr = adr + def_range;
54	if (mon_token == T_END)
55	return true;
56	else {
57	if (mon_token == T_COMMA) mon_get_token();
58	if (!mon_expression(end_adr))
59	return false;
60	return mon_token == T_END;
61	}
62	}
63	}
64
65
66	/*
67	* byte_string = (expression \| STRING) {COMMA (expression \| STRING)} END
68	*/
69
70	static bool byte_string(uint8 *&str, uintptr &len)
71	{
72	uintptr value;
73
74	static const int GRANULARITY = 16; // must be a power of 2
75	str = NULL;
76	len = 0;
77	goto start;
78
79	for (;;) {
80	if (mon_token == T_COMMA) {
81	mon_get_token();
82
83	start:
84	if (mon_token == T_STRING) {
85	unsigned n = strlen(mon_string);
86	str = (uint8 *)realloc(str, (len + n - 1 + GRANULARITY) & ~(GRANULARITY - 1));
87	memcpy(str + len, mon_string, n);
88	len += n;
89	mon_get_token();
90	} else if (mon_expression(&value)) {
91	str = (uint8 *)realloc(str, (len + GRANULARITY) & ~(GRANULARITY - 1));
92	str[len] = value;
93	len++;
94	} else {
95	if (str)
96	free(str);
97	return false;
98	}
99
100	} else if (mon_token == T_END) {
101	return true;
102	} else {
103	mon_error("',' expected");
104	if (str)
105	free(str);
106	return false;
107	}
108	}
109	}
110
111
112	/*
113	* Convert character to printable character
114	*/
115
116	static inline uint8 char2print(uint8 c)
117	{
118	return (c >= 0x20 && c <= 0x7e) ? c : '.';
119	}
120
121
122	/*
123	* Show version
124	* ver
125	*/
126
127	void version(void)
128	{
129	fprintf(monout, "cxmon V" VERSION "\n");
130	}
131
132
133	/*
134	* Redirect output
135	* o [file]
136	*/
137
138	void redir_output(void)
139	{
140	// Close old file
141	if (monout != monerr) {
142	fclose(monout);
143	monout = monerr;
144	return;
145	}
146
147	// No argument given?
148	if (mon_token == T_END)
149	return;
150
151	// Otherwise open file
152	if (mon_token == T_STRING) {
153	mon_get_token();
154	if (mon_token != T_END) {
155	mon_error("Too many arguments");
156	return;
157	}
158	if (!(monout = fopen(mon_string, "w")))
159	mon_error("Unable to open file");
160	} else
161	mon_error("'\"' around file name expected");
162	}
163
164
165	/*
166	* Compute and display expression
167	* ? expression
168	*/
169
170	void print_expr(void)
171	{
172	uintptr val;
173
174	if (!mon_expression(&val))
175	return;
176	if (mon_token != T_END) {
177	mon_error("Too many arguments");
178	return;
179	}
180
181	if (val > 0x7fffffff) {
182	fprintf(monout, "Hex unsigned: $%08x\n"
183	"Hex signed : -$%08x\n"
184	"Dec unsigned: %u\n"
185	"Dec signed : %d\n", val, -val, val, val);
186	fprintf(monout, "Char : '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
187	} else {
188	fprintf(monout, "Hex : $%08x\n"
189	"Dec : %d\n", val, val);
190	fprintf(monout, "Char: '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
191	}
192	}
193
194
195	/*
196	* Execute shell command
197	* \ "command"
198	*/
199
200	void shell_command(void)
201	{
202	if (mon_token != T_STRING) {
203	mon_error("'\"' around command expected");
204	return;
205	}
206	mon_get_token();
207	if (mon_token != T_END) {
208	mon_error("Too many arguments");
209	return;
210	}
211	system(mon_string);
212	}
213
214
215	/*
216	* Memory dump
217	* m [start [end]]
218	*/
219
220	#define MEMDUMP_BPL 16 // Bytes per line
221
222	void memory_dump(void)
223	{
224	uintptr adr, end_adr;
225	uint8 mem[MEMDUMP_BPL + 1];
226
227	mem[MEMDUMP_BPL] = 0;
228
229	if (!range_args(&adr, &end_adr, 16 * MEMDUMP_BPL - 1)) // 16 lines unless end address specified
230	return;
231
232	while (adr <= end_adr && !mon_aborted()) {
233	fprintf(monout, "%0lx:", int(2 sizeof(adr)), mon_use_real_mem ? adr: adr % mon_mem_size);
234	for (int i=0; i<MEMDUMP_BPL; i++, adr++) {
235	if (i % 4 == 0)
236	fprintf(monout, " %08x", mon_read_word(adr));
237	mem[i] = char2print(mon_read_byte(adr));
238	}
239	fprintf(monout, " '%s'\n", mem);
240	}
241
242	mon_dot_address = adr;
243	}
244
245
246	/*
247	* ASCII dump
248	* i [start [end]]
249	*/
250
251	#define ASCIIDUMP_BPL 64 // Bytes per line
252
253	void ascii_dump(void)
254	{
255	uintptr adr, end_adr;
256	uint8 str[ASCIIDUMP_BPL + 1];
257
258	str[ASCIIDUMP_BPL] = 0;
259
260	if (!range_args(&adr, &end_adr, 16 * ASCIIDUMP_BPL - 1)) // 16 lines unless end address specified
261	return;
262
263	while (adr <= end_adr && !mon_aborted()) {
264	fprintf(monout, "%0lx:", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
265	for (int i=0; i<ASCIIDUMP_BPL; i++, adr++)
266	str[i] = char2print(mon_read_byte(adr));
267	fprintf(monout, " '%s'\n", str);
268	}
269
270	mon_dot_address = adr;
271	}
272
273
274	/*
275	* Binary dump
276	* b [start [end]]
277	*/
278
279	void binary_dump(void)
280	{
281	uintptr adr, end_adr;
282	uint8 str[9];
283
284	str[8] = 0;
285
286	if (!range_args(&adr, &end_adr, 7)) // 8 lines unless end address specified
287	return;
288
289	while (adr <= end_adr && !mon_aborted()) {
290	fprintf(monout, "%0lx:", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
291	uint8 b = mon_read_byte(adr);
292	for (int m=0x80, i=0; i<8; m>>=1, i++)
293	str[i] = (b & m) ? '*' : '.';
294	fprintf(monout, " '%s'\n", str);
295	adr++;
296	}
297
298	mon_dot_address = adr;
299	}
300
301
302	/*
303	* Disassemble
304	* d [start [end]]
305	* d65 [start [end]]
306	* d68 [start [end]]
307	* d80 [start [end]]
308	* d86 [start [end]]
309	* d8086 [start [end]]
310	*/
311
312	enum CPUType {
313	CPU_PPC,
314	CPU_6502,
315	CPU_680x0,
316	CPU_Z80,
317	CPU_80x86_32,
318	CPU_80x86_16,
319	CPU_x86_64
320	};
321
322	static void disassemble(CPUType type)
323	{
324	uintptr adr, end_adr;
325
326	if (!range_args(&adr, &end_adr, 16 * 4 - 1)) // 16 lines unless end address specified
327	return;
328
329	switch (type) {
330	case CPU_PPC:
331	while (adr <= end_adr && !mon_aborted()) {
332	uint32 w = mon_read_word(adr);
333	fprintf(monout, "%0lx: %08x\t", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size, w);
334	disass_ppc(monout, mon_use_real_mem ? adr : adr % mon_mem_size, w);
335	adr += 4;
336	}
337	break;
338
339	case CPU_6502:
340	while (adr <= end_adr && !mon_aborted()) {
341	uint8 op = mon_read_byte(adr);
342	uint8 lo = mon_read_byte(adr + 1);
343	uint8 hi = mon_read_byte(adr + 2);
344	fprintf(monout, "%0lx: ", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
345	adr += disass_6502(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
346	}
347	break;
348
349	case CPU_680x0:
350	while (adr <= end_adr && !mon_aborted()) {
351	fprintf(monout, "%0lx: ", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
352	adr += disass_68k(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
353	}
354	break;
355
356	case CPU_Z80:
357	while (adr <= end_adr && !mon_aborted()) {
358	fprintf(monout, "%0lx: ", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
359	adr += disass_z80(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
360	}
361	break;
362
363	case CPU_x86_64:
364	while (adr <= end_adr && !mon_aborted()) {
365	fprintf(monout, "%0lx: ", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
366	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 64);
367	}
368	break;
369
370	case CPU_80x86_32:
371	while (adr <= end_adr && !mon_aborted()) {
372	fprintf(monout, "%0lx: ", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
373	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 32);
374	}
375	break;
376
377	case CPU_80x86_16:
378	while (adr <= end_adr && !mon_aborted()) {
379	fprintf(monout, "%0lx: ", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
380	adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 16);
381	}
382	}
383
384	mon_dot_address = adr;
385	}
386
387	void disassemble_ppc(void)
388	{
389	disassemble(CPU_PPC);
390	}
391
392	void disassemble_6502(void)
393	{
394	disassemble(CPU_6502);
395	}
396
397	void disassemble_680x0(void)
398	{
399	disassemble(CPU_680x0);
400	}
401
402	void disassemble_z80(void)
403	{
404	disassemble(CPU_Z80);
405	}
406
407	void disassemble_80x86_32(void)
408	{
409	disassemble(CPU_80x86_32);
410	}
411
412	void disassemble_80x86_16(void)
413	{
414	disassemble(CPU_80x86_16);
415	}
416
417	void disassemble_x86_64(void)
418	{
419	disassemble(CPU_x86_64);
420	}
421
422
423	/*
424	* Modify memory
425	* : addr bytestring
426	*/
427
428	void modify(void)
429	{
430	uintptr adr, len, src_adr = 0;
431	uint8 *str;
432
433	if (!mon_expression(&adr))
434	return;
435	if (!byte_string(str, len))
436	return;
437
438	while (src_adr < len)
439	mon_write_byte(adr++, str[src_adr++]);
440	mon_dot_address = adr;
441
442	free(str);
443	}
444
445
446	/*
447	* Fill
448	* f start end bytestring
449	*/
450
451	void fill(void)
452	{
453	uintptr adr, end_adr, len, src_adr = 0;
454	uint8 *str;
455
456	if (!mon_expression(&adr))
457	return;
458	if (!mon_expression(&end_adr))
459	return;
460	if (!byte_string(str, len))
461	return;
462
463	while (adr <= end_adr)
464	mon_write_byte(adr++, str[src_adr++ % len]);
465
466	free(str);
467	}
468
469
470	/*
471	* Transfer memory
472	* t start end dest
473	*/
474
475	void transfer(void)
476	{
477	uintptr adr, end_adr, dest;
478	int num;
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	num = end_adr - adr + 1;
492
493	if (dest < adr)
494	for (int i=0; i<num; i++)
495	mon_write_byte(dest++, mon_read_byte(adr++));
496	else {
497	dest += end_adr - adr;
498	for (int i=0; i<num; i++)
499	mon_write_byte(dest--, mon_read_byte(end_adr--));
500	}
501	}
502
503
504	/*
505	* Compare
506	* c start end dest
507	*/
508
509	void compare(void)
510	{
511	uintptr adr, end_adr, dest;
512	int num = 0;
513
514	if (!mon_expression(&adr))
515	return;
516	if (!mon_expression(&end_adr))
517	return;
518	if (!mon_expression(&dest))
519	return;
520	if (mon_token != T_END) {
521	mon_error("Too many arguments");
522	return;
523	}
524
525	while (adr <= end_adr && !mon_aborted()) {
526	if (mon_read_byte(adr) != mon_read_byte(dest)) {
527	fprintf(monout, "%0lx ", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
528	num++;
529	if (!(num & 7))
530	fputc('\n', monout);
531	}
532	adr++; dest++;
533	}
534
535	if (num & 7)
536	fputc('\n', monout);
537	fprintf(monout, "%d byte(s) different\n", num);
538	}
539
540
541	/*
542	* Search for byte string
543	* h start end bytestring
544	*/
545
546	void hunt(void)
547	{
548	uintptr adr, end_adr, len;
549	uint8 *str;
550	int num = 0;
551
552	if (!mon_expression(&adr))
553	return;
554	if (!mon_expression(&end_adr))
555	return;
556	if (!byte_string(str, len))
557	return;
558
559	while ((adr+len-1) <= end_adr && !mon_aborted()) {
560	uint32 i;
561
562	for (i=0; i<len; i++)
563	if (mon_read_byte(adr + i) != str[i])
564	break;
565
566	if (i == len) {
567	fprintf(monout, "%0lx ", int(2 sizeof(adr)), mon_use_real_mem ? adr : adr % mon_mem_size);
568	num++;
569	if (num == 1)
570	mon_dot_address = adr;
571	if (!(num & 7))
572	fputc('\n', monout);
573	}
574	adr++;
575	}
576
577	free(str);
578
579	if (num & 7)
580	fputc('\n', monout);
581	fprintf(monout, "Found %d occurrences\n", num);
582	}
583
584
585	/*
586	* Load data
587	* [ start "file"
588	*/
589
590	void load_data(void)
591	{
592	uintptr start_adr;
593	FILE *file;
594	int fc;
595
596	if (!mon_expression(&start_adr))
597	return;
598	if (mon_token == T_END) {
599	mon_error("Missing file name");
600	return;
601	}
602	if (mon_token != T_STRING) {
603	mon_error("'\"' around file name expected");
604	return;
605	}
606	mon_get_token();
607	if (mon_token != T_END) {
608	mon_error("Too many arguments");
609	return;
610	}
611
612	if (!(file = fopen(mon_string, "rb")))
613	mon_error("Unable to open file");
614	else {
615	uintptr adr = start_adr;
616
617	while ((fc = fgetc(file)) != EOF)
618	mon_write_byte(adr++, fc);
619	fclose(file);
620
621	fprintf(monerr, "%08x bytes read from %0lx to %0lx\n", adr - start_adr, int(2 * sizeof(adr)), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, int(2 * sizeof(adr)), mon_use_real_mem ? adr-1 : (adr-1) % mon_mem_size);
622	mon_dot_address = adr;
623	}
624	}
625
626
627	/*
628	* Save data
629	* ] start size "file"
630	*/
631
632	void save_data(void)
633	{
634	uintptr start_adr, size;
635	FILE *file;
636
637	if (!mon_expression(&start_adr))
638	return;
639	if (!mon_expression(&size))
640	return;
641	if (mon_token == T_END) {
642	mon_error("Missing file name");
643	return;
644	}
645	if (mon_token != T_STRING) {
646	mon_error("'\"' around file name expected");
647	return;
648	}
649	mon_get_token();
650	if (mon_token != T_END) {
651	mon_error("Too many arguments");
652	return;
653	}
654
655	if (!(file = fopen(mon_string, "wb")))
656	mon_error("Unable to create file");
657	else {
658	uintptr adr = start_adr, end_adr = start_adr + size - 1;
659
660	while (adr <= end_adr)
661	fputc(mon_read_byte(adr++), file);
662	fclose(file);
663
664	fprintf(monerr, "%08x bytes written from %0lx to %0lx\n", size, int(2 * sizeof(adr)), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, int(2 * sizeof(adr)), mon_use_real_mem ? end_adr : end_adr % mon_mem_size);
665	}
666	}