mon/src/mon_cmd.cpp

/*
 *  mon_cmd.cpp - cxmon standard commands
 *
 *  cxmon (C) 1997-2003 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) {
                                uint8 *p = (uint8 *)mon_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, "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)
{
        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:", 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:", 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:", 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", 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: ", 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: ", 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: ", 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: ", 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: ", 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: ", 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 ", 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 ", 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, 2 * sizeof(adr), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, 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, 2 * sizeof(adr), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, 2 * sizeof(adr), mon_use_real_mem ? end_adr : end_adr % mon_mem_size);
        }
}
Revision:	1.16
Committed:	2004-02-12T17:14:36Z (20 years, 9 months ago) by cebix
Branch:	MAIN
Changes since 1.15:	+26 -12 lines
Log Message:	removed restriction to 256 bytes for commands that use byte_string() (modify, fill, hunt)
#	User	Rev	Content
1	cebix	1.1	/*
2	cebix	1.9	* mon_cmd.cpp - cxmon standard commands
3	cebix	1.1	*
4	cebix	1.15	* cxmon (C) 1997-2003 Christian Bauer, Marc Hellwig
5	cebix	1.2	*
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	cebix	1.12	#define VERSION "3"
31	hellwig	1.6	#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	gbeauche	1.11	static bool range_args(uintptr adr, uintptr end_adr, uint32 def_range)
44	cebix	1.1	{
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	cebix	1.16	static bool byte_string(uint8 *&str, uintptr &len)
71	cebix	1.1	{
72	gbeauche	1.11	uintptr value;
73	cebix	1.1
74	cebix	1.16	static const int GRANULARITY = 16; // must be a power of 2
75			str = NULL;
76	cebix	1.1	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			uint8 p = (uint8 )mon_string;
86	cebix	1.16	unsigned n = strlen(mon_string);
87			str = (uint8 *)realloc(str, (len + n - 1 + GRANULARITY) & ~(GRANULARITY - 1));
88			memcpy(str + len, mon_string, n);
89			len += n;
90	cebix	1.1	mon_get_token();
91			} else if (mon_expression(&value)) {
92	cebix	1.16	str = (uint8 *)realloc(str, (len + GRANULARITY) & ~(GRANULARITY - 1));
93			str[len] = value;
94	cebix	1.1	len++;
95	cebix	1.16	} else {
96			if (str)
97			free(str);
98	cebix	1.1	return false;
99	cebix	1.16	}
100	cebix	1.1
101	cebix	1.16	} else if (mon_token == T_END) {
102	cebix	1.1	return true;
103	cebix	1.16	} else {
104	cebix	1.1	mon_error("',' expected");
105	cebix	1.16	if (str)
106			free(str);
107	cebix	1.1	return false;
108			}
109			}
110			}
111
112
113			/*
114			* Convert character to printable character
115			*/
116
117			static inline uint8 char2print(uint8 c)
118			{
119			return (c >= 0x20 && c <= 0x7e) ? c : '.';
120			}
121
122
123			/*
124			* Show version
125			* ver
126			*/
127
128			void version(void)
129			{
130	cebix	1.5	fprintf(monout, "mon V" VERSION "\n");
131	cebix	1.1	}
132
133
134			/*
135			* Redirect output
136			* o [file]
137			*/
138
139			void redir_output(void)
140			{
141			// Close old file
142			if (monout != monerr) {
143			fclose(monout);
144			monout = monerr;
145			return;
146			}
147
148			// No argument given?
149			if (mon_token == T_END)
150			return;
151
152			// Otherwise open file
153			if (mon_token == T_STRING) {
154			mon_get_token();
155			if (mon_token != T_END) {
156			mon_error("Too many arguments");
157			return;
158			}
159			if (!(monout = fopen(mon_string, "w")))
160			mon_error("Unable to open file");
161			} else
162			mon_error("'\"' around file name expected");
163			}
164
165
166			/*
167			* Compute and display expression
168			* ? expression
169			*/
170
171			void print_expr(void)
172			{
173	gbeauche	1.11	uintptr val;
174	cebix	1.1
175			if (!mon_expression(&val))
176			return;
177			if (mon_token != T_END) {
178			mon_error("Too many arguments");
179			return;
180			}
181
182			if (val > 0x7fffffff) {
183	cebix	1.3	fprintf(monout, "Hex unsigned: $%08x\n"
184			"Hex signed : -$%08x\n"
185			"Dec unsigned: %u\n"
186			"Dec signed : %d\n", val, -val, val, val);
187	cebix	1.1	fprintf(monout, "Char : '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
188			} else {
189	cebix	1.3	fprintf(monout, "Hex : $%08x\n"
190			"Dec : %d\n", val, val);
191	cebix	1.1	fprintf(monout, "Char: '%c%c%c%c'\n", char2print(val >> 24), char2print(val >> 16), char2print(val >> 8), char2print(val));
192			}
193			}
194
195
196			/*
197			* Execute shell command
198			* \ "command"
199			*/
200
201			void shell_command(void)
202			{
203			if (mon_token != T_STRING) {
204			mon_error("'\"' around command expected");
205			return;
206			}
207			mon_get_token();
208			if (mon_token != T_END) {
209			mon_error("Too many arguments");
210			return;
211			}
212			system(mon_string);
213			}
214
215
216			/*
217			* Memory dump
218			* m [start [end]]
219			*/
220
221			#define MEMDUMP_BPL 16 // Bytes per line
222
223			void memory_dump(void)
224			{
225	gbeauche	1.11	uintptr adr, end_adr;
226	cebix	1.1	uint8 mem[MEMDUMP_BPL + 1];
227
228			mem[MEMDUMP_BPL] = 0;
229
230			if (!range_args(&adr, &end_adr, 16 * MEMDUMP_BPL - 1)) // 16 lines unless end address specified
231			return;
232
233			while (adr <= end_adr && !mon_aborted()) {
234	gbeauche	1.11	fprintf(monout, "%0lx:", 2 sizeof(adr), mon_use_real_mem ? adr: adr % mon_mem_size);
235	cebix	1.1	for (int i=0; i<MEMDUMP_BPL; i++, adr++) {
236			if (i % 4 == 0)
237	cebix	1.3	fprintf(monout, " %08x", mon_read_word(adr));
238	cebix	1.1	mem[i] = char2print(mon_read_byte(adr));
239			}
240			fprintf(monout, " '%s'\n", mem);
241			}
242
243			mon_dot_address = adr;
244			}
245
246
247			/*
248			* ASCII dump
249			* i [start [end]]
250			*/
251
252			#define ASCIIDUMP_BPL 64 // Bytes per line
253
254			void ascii_dump(void)
255			{
256	gbeauche	1.11	uintptr adr, end_adr;
257	cebix	1.1	uint8 str[ASCIIDUMP_BPL + 1];
258
259			str[ASCIIDUMP_BPL] = 0;
260
261			if (!range_args(&adr, &end_adr, 16 * ASCIIDUMP_BPL - 1)) // 16 lines unless end address specified
262			return;
263
264			while (adr <= end_adr && !mon_aborted()) {
265	gbeauche	1.13	fprintf(monout, "%0lx:", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
266	cebix	1.1	for (int i=0; i<ASCIIDUMP_BPL; i++, adr++)
267			str[i] = char2print(mon_read_byte(adr));
268			fprintf(monout, " '%s'\n", str);
269	cebix	1.5	}
270
271			mon_dot_address = adr;
272			}
273
274
275			/*
276			* Binary dump
277			* b [start [end]]
278			*/
279
280			void binary_dump(void)
281			{
282	gbeauche	1.11	uintptr adr, end_adr;
283	cebix	1.5	uint8 str[9];
284
285			str[8] = 0;
286
287			if (!range_args(&adr, &end_adr, 7)) // 8 lines unless end address specified
288			return;
289
290			while (adr <= end_adr && !mon_aborted()) {
291	gbeauche	1.13	fprintf(monout, "%0lx:", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
292	cebix	1.5	uint8 b = mon_read_byte(adr);
293			for (int m=0x80, i=0; i<8; m>>=1, i++)
294			str[i] = (b & m) ? '*' : '.';
295			fprintf(monout, " '%s'\n", str);
296			adr++;
297	cebix	1.1	}
298
299			mon_dot_address = adr;
300			}
301
302
303			/*
304			* Disassemble
305			* d [start [end]]
306			* d65 [start [end]]
307			* d68 [start [end]]
308			* d80 [start [end]]
309			* d86 [start [end]]
310	cebix	1.9	* d8086 [start [end]]
311	cebix	1.1	*/
312
313			enum CPUType {
314			CPU_PPC,
315			CPU_6502,
316			CPU_680x0,
317	cebix	1.9	CPU_Z80,
318	cebix	1.8	CPU_80x86_32,
319	gbeauche	1.13	CPU_80x86_16,
320			CPU_x86_64
321	cebix	1.1	};
322
323			static void disassemble(CPUType type)
324			{
325	gbeauche	1.11	uintptr adr, end_adr;
326	cebix	1.1
327			if (!range_args(&adr, &end_adr, 16 * 4 - 1)) // 16 lines unless end address specified
328			return;
329
330			switch (type) {
331			case CPU_PPC:
332			while (adr <= end_adr && !mon_aborted()) {
333			uint32 w = mon_read_word(adr);
334	gbeauche	1.13	fprintf(monout, "%0lx: %08x\t", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size, w);
335	cebix	1.1	disass_ppc(monout, mon_use_real_mem ? adr : adr % mon_mem_size, w);
336			adr += 4;
337			}
338			break;
339
340			case CPU_6502:
341			while (adr <= end_adr && !mon_aborted()) {
342			uint8 op = mon_read_byte(adr);
343			uint8 lo = mon_read_byte(adr + 1);
344			uint8 hi = mon_read_byte(adr + 2);
345	gbeauche	1.13	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
346	cebix	1.1	adr += disass_6502(monout, mon_use_real_mem ? adr : adr % mon_mem_size, op, lo, hi);
347			}
348			break;
349
350			case CPU_680x0:
351			while (adr <= end_adr && !mon_aborted()) {
352	gbeauche	1.13	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
353	cebix	1.7	adr += disass_68k(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
354	cebix	1.1	}
355			break;
356
357	cebix	1.9	case CPU_Z80:
358	cebix	1.1	while (adr <= end_adr && !mon_aborted()) {
359	gbeauche	1.13	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
360	cebix	1.9	adr += disass_z80(monout, mon_use_real_mem ? adr : adr % mon_mem_size);
361	cebix	1.1	}
362			break;
363
364	gbeauche	1.13	case CPU_x86_64:
365			while (adr <= end_adr && !mon_aborted()) {
366			fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
367			adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 64);
368			}
369			break;
370
371	cebix	1.8	case CPU_80x86_32:
372	cebix	1.1	while (adr <= end_adr && !mon_aborted()) {
373	gbeauche	1.13	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
374			adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 32);
375	cebix	1.8	}
376			break;
377
378			case CPU_80x86_16:
379			while (adr <= end_adr && !mon_aborted()) {
380	gbeauche	1.13	fprintf(monout, "%0lx: ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
381			adr += disass_x86(monout, mon_use_real_mem ? adr : adr % mon_mem_size, 16);
382	cebix	1.1	}
383			}
384
385			mon_dot_address = adr;
386			}
387
388			void disassemble_ppc(void)
389			{
390			disassemble(CPU_PPC);
391			}
392
393			void disassemble_6502(void)
394			{
395			disassemble(CPU_6502);
396			}
397
398			void disassemble_680x0(void)
399			{
400			disassemble(CPU_680x0);
401			}
402
403	cebix	1.9	void disassemble_z80(void)
404	cebix	1.1	{
405	cebix	1.9	disassemble(CPU_Z80);
406	cebix	1.1	}
407
408	cebix	1.8	void disassemble_80x86_32(void)
409			{
410			disassemble(CPU_80x86_32);
411			}
412
413			void disassemble_80x86_16(void)
414	cebix	1.1	{
415	cebix	1.8	disassemble(CPU_80x86_16);
416	cebix	1.1	}
417
418	gbeauche	1.13	void disassemble_x86_64(void)
419			{
420			disassemble(CPU_x86_64);
421			}
422
423	cebix	1.1
424			/*
425			* Modify memory
426			* : addr bytestring
427			*/
428
429			void modify(void)
430			{
431	gbeauche	1.11	uintptr adr, len, src_adr = 0;
432	cebix	1.16	uint8 *str;
433	cebix	1.1
434			if (!mon_expression(&adr))
435			return;
436			if (!byte_string(str, len))
437			return;
438
439			while (src_adr < len)
440			mon_write_byte(adr++, str[src_adr++]);
441	cebix	1.16	mon_dot_address = adr;
442	cebix	1.1
443	cebix	1.16	free(str);
444	cebix	1.1	}
445
446
447			/*
448			* Fill
449			* f start end bytestring
450			*/
451
452			void fill(void)
453			{
454	gbeauche	1.11	uintptr adr, end_adr, len, src_adr = 0;
455	cebix	1.16	uint8 *str;
456	cebix	1.1
457			if (!mon_expression(&adr))
458			return;
459			if (!mon_expression(&end_adr))
460			return;
461			if (!byte_string(str, len))
462			return;
463
464			while (adr <= end_adr)
465			mon_write_byte(adr++, str[src_adr++ % len]);
466	cebix	1.16
467			free(str);
468	cebix	1.1	}
469
470
471			/*
472			* Transfer memory
473			* t start end dest
474			*/
475
476			void transfer(void)
477			{
478	gbeauche	1.11	uintptr adr, end_adr, dest;
479	cebix	1.1	int num;
480
481			if (!mon_expression(&adr))
482			return;
483			if (!mon_expression(&end_adr))
484			return;
485			if (!mon_expression(&dest))
486			return;
487			if (mon_token != T_END) {
488			mon_error("Too many arguments");
489			return;
490			}
491
492			num = end_adr - adr + 1;
493
494			if (dest < adr)
495			for (int i=0; i<num; i++)
496			mon_write_byte(dest++, mon_read_byte(adr++));
497			else {
498			dest += end_adr - adr;
499			for (int i=0; i<num; i++)
500			mon_write_byte(dest--, mon_read_byte(end_adr--));
501			}
502			}
503
504
505			/*
506			* Compare
507			* c start end dest
508			*/
509
510			void compare(void)
511			{
512	gbeauche	1.11	uintptr adr, end_adr, dest;
513	cebix	1.1	int num = 0;
514
515			if (!mon_expression(&adr))
516			return;
517			if (!mon_expression(&end_adr))
518			return;
519			if (!mon_expression(&dest))
520			return;
521			if (mon_token != T_END) {
522			mon_error("Too many arguments");
523			return;
524			}
525
526			while (adr <= end_adr && !mon_aborted()) {
527			if (mon_read_byte(adr) != mon_read_byte(dest)) {
528	gbeauche	1.13	fprintf(monout, "%0lx ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
529	cebix	1.1	num++;
530			if (!(num & 7))
531			fputc('\n', monout);
532			}
533			adr++; dest++;
534			}
535
536			if (num & 7)
537			fputc('\n', monout);
538			fprintf(monout, "%d byte(s) different\n", num);
539			}
540
541
542			/*
543			* Search for byte string
544			* h start end bytestring
545			*/
546
547			void hunt(void)
548			{
549	gbeauche	1.11	uintptr adr, end_adr, len;
550	cebix	1.16	uint8 *str;
551	cebix	1.1	int num = 0;
552
553			if (!mon_expression(&adr))
554			return;
555			if (!mon_expression(&end_adr))
556			return;
557			if (!byte_string(str, len))
558			return;
559
560			while ((adr+len-1) <= end_adr && !mon_aborted()) {
561			uint32 i;
562
563			for (i=0; i<len; i++)
564			if (mon_read_byte(adr + i) != str[i])
565			break;
566
567			if (i == len) {
568	gbeauche	1.13	fprintf(monout, "%0lx ", 2 sizeof(adr), mon_use_real_mem ? adr : adr % mon_mem_size);
569	cebix	1.1	num++;
570			if (num == 1)
571			mon_dot_address = adr;
572			if (!(num & 7))
573			fputc('\n', monout);
574			}
575			adr++;
576			}
577	cebix	1.16
578			free(str);
579	cebix	1.1
580			if (num & 7)
581			fputc('\n', monout);
582			fprintf(monout, "Found %d occurrences\n", num);
583			}
584
585
586			/*
587			* Load data
588			* [ start "file"
589			*/
590
591			void load_data(void)
592			{
593	gbeauche	1.11	uintptr start_adr;
594	cebix	1.1	FILE *file;
595			int fc;
596
597			if (!mon_expression(&start_adr))
598			return;
599			if (mon_token == T_END) {
600			mon_error("Missing file name");
601			return;
602			}
603			if (mon_token != T_STRING) {
604			mon_error("'\"' around file name expected");
605			return;
606			}
607			mon_get_token();
608			if (mon_token != T_END) {
609			mon_error("Too many arguments");
610			return;
611			}
612
613			if (!(file = fopen(mon_string, "rb")))
614			mon_error("Unable to open file");
615			else {
616	gbeauche	1.11	uintptr adr = start_adr;
617	cebix	1.1
618			while ((fc = fgetc(file)) != EOF)
619			mon_write_byte(adr++, fc);
620			fclose(file);
621
622	gbeauche	1.13	fprintf(monerr, "%08x bytes read from %0lx to %0lx\n", adr - start_adr, 2 * sizeof(adr), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, 2 * sizeof(adr), mon_use_real_mem ? adr-1 : (adr-1) % mon_mem_size);
623	cebix	1.1	mon_dot_address = adr;
624			}
625			}
626
627
628			/*
629			* Save data
630			* ] start size "file"
631			*/
632
633			void save_data(void)
634			{
635	gbeauche	1.11	uintptr start_adr, size;
636	cebix	1.1	FILE *file;
637
638			if (!mon_expression(&start_adr))
639			return;
640			if (!mon_expression(&size))
641			return;
642			if (mon_token == T_END) {
643			mon_error("Missing file name");
644			return;
645			}
646			if (mon_token != T_STRING) {
647			mon_error("'\"' around file name expected");
648			return;
649			}
650			mon_get_token();
651			if (mon_token != T_END) {
652			mon_error("Too many arguments");
653			return;
654			}
655
656			if (!(file = fopen(mon_string, "wb")))
657			mon_error("Unable to create file");
658			else {
659	gbeauche	1.11	uintptr adr = start_adr, end_adr = start_adr + size - 1;
660	cebix	1.1
661			while (adr <= end_adr)
662			fputc(mon_read_byte(adr++), file);
663			fclose(file);
664
665	cebix	1.14	fprintf(monerr, "%08x bytes written from %0lx to %0lx\n", size, 2 * sizeof(adr), mon_use_real_mem ? start_adr : start_adr % mon_mem_size, 2 * sizeof(adr), mon_use_real_mem ? end_adr : end_adr % mon_mem_size);
666	cebix	1.1	}
667			}