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Add .jtab directive.

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This commit is contained in:
Eric Smith 2008-03-24 01:33:52 +00:00
parent 46b4b61873
commit dae274100d
3 changed files with 43 additions and 4 deletions
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3
dis.h
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@ -1,7 +1,7 @@
/*
* dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
*
* $Id: dis.h,v 1.6 2003/09/16 12:00:00 eric Exp $
* $Id$
* Copyright 2000-2003 Eric Smith <eric@brouhaha.com>
*
* This program is free software; you can redistribute it and/or modify
@ -115,6 +115,7 @@ char *get_name(addr_t loc);
#define TJTAB2 264
#define EQS 265
#define OFS 266
#define TJTAB 267
extern FILE *yyin, *yyout;
int lineno;

4
lex.l
View File

@ -2,7 +2,7 @@
* dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
*
* $Id$
* Copyright 2001-2003 Eric Smith <eric@brouhaha.com>
* Copyright 2001-2003, 2008 Eric Smith <eric@brouhaha.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -61,6 +61,8 @@ alphanum [0-9a-zA-Z_]
\.[Jj][Tt][Aa][Bb]2 { return TJTAB2; }
\.[Jj][Tt][Aa][Bb] { return TJTAB; }
{digit}+ {
(void)sscanf(yytext, "%d", &token.ival);
return NUMBER;

40
main.c
View File

@ -1,8 +1,8 @@
/*
* dis6502 by Robert Bond, Udi Finkelstein, and Eric Smith
*
* $Id: main.c,v 1.8 2003/09/16 12:00:00 eric Exp $
* Copyright 2000-2003 Eric Smith <eric@brouhaha.com>
* $Id$
* Copyright 2000-2003, 2008 Eric Smith <eric@brouhaha.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -50,6 +50,12 @@ int jtab2_addr_high [JTAB2_MAX]; /* .jtab2 directive */
int jtab2_size [JTAB2_MAX];
int jtab2_count = 0;
#define JTAB_MAX 50
int jtab_addr [JTAB_MAX]; /* .jtab directive */
int jtab_addr [JTAB_MAX];
int jtab_size [JTAB_MAX];
int jtab_count = 0;
VALUE token;
unsigned char d[0x10000]; /* The data */
@ -252,6 +258,23 @@ void do_jtab2 (void)
}
}
void do_jtab (void)
{
int i, j;
int loc, code;
for (i = 0; i < jtab_count; i++)
{
loc = jtab_addr [i];
for (j = 0; j < jtab_size [i]; j+=2)
{
char *trace_sym = (char *) malloc (6);
code = d [loc + j] + (d [loc + j + 1] << 8);
sprintf (trace_sym, "T%04x", code);
start_trace (code, trace_sym);
}
}
}
int main (int argc, char *argv[])
@ -290,6 +313,7 @@ int main (int argc, char *argv[])
do_ptrace ();
do_rtstab ();
do_jtab2 ();
do_jtab ();
trace_all ();
@ -347,6 +371,18 @@ void get_predef (void)
crash(".jtab2 needs a number operand");
jtab2_size [jtab2_count++] = token.ival;
break;
case TJTAB:
if (yylex() != NUMBER)
crash(".jtab needs a number operand");
if (token.ival > 0x10000 || token.ival < 0)
crash("Number out of range");
jtab_addr [jtab_count] = token.ival;
if (yylex() != ',')
crash(".jtab needs a comma");
if (yylex() != NUMBER)
crash(".jtab2 needs a number operand");
jtab_size [jtab_count++] = token.ival;
break;
case TSTART:
if (yylex() != NUMBER)
crash(".trace needs a number operand");