| /* |
| * Wine debugger utility routines |
| * Eric Youngdale |
| * 9/93 |
| */ |
| |
| #include <stdio.h> |
| #include "regpos.h" |
| |
| extern int * regval; |
| extern unsigned int dbg_mask; |
| extern unsigned int dbg_mode; |
| |
| extern int print_insn(char * memaddr, char * realaddr, FILE * stream, int addrlen); |
| |
| /* THese three helper functions eliminate the need for patching the |
| module from gdb for disassembly of code */ |
| |
| void read_memory(char * memaddr, char * buffer, int len){ |
| memcpy(buffer, memaddr, len); |
| } |
| |
| void fputs_filtered(char * buffer, FILE * outfile){ |
| fputs(buffer, outfile); |
| } |
| |
| void print_address(unsigned int addr, FILE * outfile){ |
| char * name; |
| name = find_nearest_symbol(addr); |
| if(name) |
| fprintf(outfile,"0x%8.8x(%s)", addr, name); |
| else |
| fprintf(outfile,"0x%8.8x", addr); |
| |
| } |
| |
| |
| void info_reg(){ |
| fprintf(stderr,"Register dump:\n"); |
| /* First get the segment registers out of the way */ |
| fprintf(stderr," CS:%4.4x SS:%4.4x DS:%4.4x ES:%4.4x GS:%4.4x FS:%4.4x\n", |
| SC_CS, SC_SS, SC_DS, SC_ES, SC_GS, SC_FS); |
| |
| /* Now dump the main registers */ |
| fprintf(stderr," EIP:%8.8x ESP:%8.8x EBP:%8.8x EFLAGS:%8.8x\n", |
| SC_EIP(dbg_mask), SC_ESP(dbg_mask), SC_EBP(dbg_mask), SC_EFLAGS); |
| |
| /* And dump the regular registers */ |
| |
| fprintf(stderr," EAX:%8.8x EBX:%8.8x ECX:%8.8x EDX:%8.8x\n", |
| SC_EAX(dbg_mask), SC_EBX(dbg_mask), SC_ECX(dbg_mask), SC_EDX(dbg_mask)); |
| |
| /* Finally dump these main registers */ |
| fprintf(stderr," EDI:%8.8x ESI:%8.8x\n", |
| SC_EDI(dbg_mask), SC_ESI(dbg_mask)); |
| |
| } |
| |
| void info_stack(){ |
| unsigned int * dump; |
| int i; |
| |
| |
| fprintf(stderr,"Stack dump:\n"); |
| dump = (int*) SC_EIP(dbg_mask); |
| for(i=0; i<22; i++) |
| { |
| fprintf(stderr," %8.8x", *dump++); |
| if ((i % 8) == 7) |
| fprintf(stderr,"\n"); |
| } |
| fprintf(stderr,"\n"); |
| } |
| |
| |
| void examine_memory(int addr, int count, char format){ |
| char * pnt; |
| unsigned int * dump; |
| unsigned short int * wdump; |
| int i; |
| |
| if((addr & 0xffff0000) == 0 && dbg_mode == 16) |
| addr |= (format == 'i' ? SC_CS : SC_DS) << 16; |
| |
| |
| if(format != 'i' && count > 1) { |
| print_address(addr, stderr); |
| fprintf(stderr,": "); |
| }; |
| |
| |
| switch(format){ |
| case 's': |
| pnt = (char *) addr; |
| if (count == 1) count = 256; |
| while(*pnt && count) { |
| fputc( *pnt++, stderr); |
| count--; |
| }; |
| fprintf(stderr,"\n"); |
| return; |
| |
| case 'i': |
| for(i=0; i<count; i++) { |
| print_address(addr, stderr); |
| fprintf(stderr,": "); |
| addr += print_insn((char *) addr, (char *) addr, stderr, dbg_mode); |
| fprintf(stderr,"\n"); |
| }; |
| return; |
| case 'x': |
| dump = (unsigned int *) addr; |
| for(i=0; i<count; i++) |
| { |
| fprintf(stderr," %8.8x", *dump++); |
| if ((i % 8) == 7) { |
| fprintf(stderr,"\n"); |
| print_address((unsigned int) dump, stderr); |
| fprintf(stderr,": "); |
| }; |
| } |
| fprintf(stderr,"\n"); |
| return; |
| |
| case 'd': |
| dump = (unsigned int *) addr; |
| for(i=0; i<count; i++) |
| { |
| fprintf(stderr," %d", *dump++); |
| if ((i % 8) == 7) { |
| fprintf(stderr,"\n"); |
| print_address((unsigned int) dump, stderr); |
| fprintf(stderr,": "); |
| }; |
| } |
| fprintf(stderr,"\n"); |
| return; |
| |
| case 'w': |
| wdump = (unsigned short int *) addr; |
| for(i=0; i<count; i++) |
| { |
| fprintf(stderr," %x", *wdump++); |
| if ((i % 10) == 7) { |
| fprintf(stderr,"\n"); |
| print_address((unsigned int) wdump, stderr); |
| fprintf(stderr,": "); |
| }; |
| } |
| fprintf(stderr,"\n"); |
| return; |
| |
| case 'c': |
| pnt = (char *) addr; |
| for(i=0; i<count; i++) |
| { |
| if(*pnt < 0x20) { |
| fprintf(stderr," "); |
| pnt++; |
| } else |
| fprintf(stderr," %c", *pnt++); |
| if ((i % 32) == 7) { |
| fprintf(stderr,"\n"); |
| print_address((unsigned int) dump, stderr); |
| fprintf(stderr,": "); |
| }; |
| } |
| fprintf(stderr,"\n"); |
| return; |
| |
| case 'b': |
| pnt = (char *) addr; |
| for(i=0; i<count; i++) |
| { |
| fprintf(stderr," %w", *pnt++); |
| if ((i % 32) == 7) { |
| fprintf(stderr,"\n"); |
| print_address((unsigned int) pnt, stderr); |
| fprintf(stderr,": "); |
| }; |
| } |
| fprintf(stderr,"\n"); |
| return; |
| }; |
| |
| /* The rest are fairly straightforward */ |
| |
| fprintf(stderr,"examine mem: %x %d %c\n", addr, count, format); |
| } |
| |
| char * helptext[] = { |
| "The commands accepted by the Wine debugger are a small subset", |
| "of the commands that gdb would accept. The commands currently", |
| "are:\n", |
| " info reg", |
| " info stack", |
| " help", |
| " quit", |
| " print <expr>", |
| " symbolfile <filename>", |
| " define <identifier> <expr>", |
| " x <expr>", |
| " cont", |
| " set <reg> = <expr>", |
| " set *<expr> = <expr>", |
| "", |
| "The 'x' command accepts repeat counts and formats (including 'i') in the", |
| "same way that gdb does.", |
| "", |
| " The following are examples of legal expressions:", |
| " $eax $eax+0x3 0x1000 ($eip + 256) *$eax *($esp + 3)", |
| " Also, a nm format symbol table can be read from a file using the", |
| " symbolfile command. Symbols can also be defined individually with", |
| " the define command.", |
| "", |
| "The disassembly code seems to work most of the time, but it does get", |
| "a little confused at times. The 16 bit mode probably has not been used", |
| "much so there are probably bugs. I snagged the file from the gdb-4.7", |
| "source tree, which is what was on my latest cdrom. I should check to see", |
| "if newer versions of gdb have anything substanitally different for the", |
| "disassembler.", |
| "", |
| NULL}; |
| |
| void dbg_help(){ |
| int i; |
| i = 0; |
| while(helptext[i]) fprintf(stderr,"%s\n", helptext[i++]); |
| } |
| |