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/* |
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* mon.cpp - mon main program |
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* |
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* mon (C) 1997-1999 Christian Bauer, Marc Hellwig |
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* mon (C) 1997-2000 Christian Bauer, Marc Hellwig |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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#include "sysdeps.h" |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <signal.h> |
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#include <ctype.h> |
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#ifdef HAVE_READLINE_READLINE_H |
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extern "C" { |
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#include <readline/readline.h> |
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#include "mon.h" |
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#include "mon_cmd.h" |
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#include "version.h" |
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// Buffer we're operating on |
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* Access to buffer |
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*/ |
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uint32 mon_read_byte(uint32 adr) |
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uint32 (*mon_read_byte)(uint32 adr); |
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uint32 mon_read_byte_buffer(uint32 adr) |
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{ |
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if (mon_use_real_mem) |
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return *(uint8 *)adr; |
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else |
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return mem[adr % mon_mem_size]; |
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return mem[adr % mon_mem_size]; |
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} |
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void mon_write_byte(uint32 adr, uint32 b) |
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uint32 mon_read_byte_real(uint32 adr) |
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{ |
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if (mon_use_real_mem) |
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*(uint8 *)adr = b; |
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else |
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mem[adr % mon_mem_size] = b; |
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return *(uint8 *)adr; |
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} |
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void (*mon_write_byte)(uint32 adr, uint32 b); |
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void mon_write_byte_buffer(uint32 adr, uint32 b) |
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{ |
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mem[adr % mon_mem_size] = b; |
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} |
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void mon_write_byte_real(uint32 adr, uint32 b) |
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{ |
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*(uint8 *)adr = b; |
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} |
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uint32 mon_read_half(uint32 adr) |
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{ |
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if (mon_use_real_mem) |
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return ntohs(*(uint16 *)adr); |
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else |
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return mem[adr % mon_mem_size] << 8 | mem[(adr+1) % mon_mem_size]; |
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return (mon_read_byte(adr) << 8) | mon_read_byte(adr+1); |
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} |
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void mon_write_half(uint32 adr, uint32 w) |
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{ |
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if (mon_use_real_mem) |
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*(uint16 *)adr = htons(w); |
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else { |
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mem[adr % mon_mem_size] = w >> 8; |
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mem[(adr+1) % mon_mem_size] = w; |
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} |
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mon_write_byte(adr, w >> 8); |
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mon_write_byte(adr+1, w); |
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} |
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uint32 mon_read_word(uint32 adr) |
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{ |
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if (mon_use_real_mem) |
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return ntohl(*(uint32 *)adr); |
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else |
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return mon_read_byte(adr) << 24 | mon_read_byte(adr+1) << 16 | mon_read_byte(adr+2) << 8 | mon_read_byte(adr+3); |
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return (mon_read_byte(adr) << 24) | (mon_read_byte(adr+1) << 16) | (mon_read_byte(adr+2) << 8) | mon_read_byte(adr+3); |
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} |
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void mon_write_word(uint32 adr, uint32 l) |
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{ |
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if (mon_use_real_mem) |
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*(uint32 *)adr = htonl(l); |
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else { |
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mem[adr % mon_mem_size] = l >> 24; |
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mem[(adr+1) % mon_mem_size] = l >> 16; |
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mem[(adr+2) % mon_mem_size] = l >> 8; |
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mem[(adr+3) % mon_mem_size] = l; |
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} |
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mon_write_byte(adr, l >> 24); |
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mon_write_byte(adr+1, l >> 16); |
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mon_write_byte(adr+2, l >> 8); |
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mon_write_byte(adr+3, l); |
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} |
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mon_add_command("@", reallocate, "@ [size] Reallocate buffer\n"); |
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mon_add_command("i", ascii_dump, "i [start [end]] ASCII memory dump\n"); |
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mon_add_command("m", memory_dump, "m [start [end]] Hex/ASCII memory dump\n"); |
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mon_add_command("b", binary_dump, "b [start [end]] Binary memory dump\n"); |
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mon_add_command("d", disassemble_ppc, "d [start [end]] Disassemble PowerPC code\n"); |
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mon_add_command("d65", disassemble_6502, "d65 [start [end]] Disassemble 6502 code\n"); |
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mon_add_command("d68", disassemble_680x0, "d68 [start [end]] Disassemble 680x0 code\n"); |
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mon_add_command("]", save_data, "] start size \"file\" Save data to file\n"); |
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mon_add_command("set", set_var, "set [var[=value]] Set/clear/show variables\n"); |
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mon_add_command("cv", clear_vars, "cv Clear all variables\n"); |
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mon_read_byte = NULL; |
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mon_write_byte = NULL; |
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} |
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interactive = (argc == 0); |
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} |
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// Set up memory access functions if not supplied by the user |
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if (mon_read_byte == NULL) { |
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if (mon_use_real_mem) |
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mon_read_byte = mon_read_byte_real; |
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else |
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mon_read_byte = mon_read_byte_buffer; |
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} |
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if (mon_write_byte == NULL) { |
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if (mon_use_real_mem) |
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mon_write_byte = mon_write_byte_real; |
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else |
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mon_write_byte = mon_write_byte_buffer; |
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} |
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// Allocate buffer |
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if (!mon_use_real_mem) { |
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mon_mem_size = 0x100000; |
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// Print banner |
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if (interactive) |
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fprintf(monerr, "\n *** mon V%d.%d by Christian Bauer and Marc Hellwig ***\n" |
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" *** Press 'h' for help ***\n\n", VERSION_MAJOR, VERSION_MINOR); |
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fprintf(monerr, "\n *** mon V" VERSION " by Christian Bauer and Marc Hellwig ***\n" |
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" *** Press 'h' for help ***\n\n"); |
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} |
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init_abort(); |
