Sweden-Number/debugger/break.c

84 lines
1.4 KiB
C

#include <stdio.h>
#define N_BP 25
struct wine_bp{
unsigned long addr;
char in_use;
char enabled;
unsigned char databyte;
};
static struct wine_bp wbp[N_BP] = {{0,},};
void info_break()
{
int j;
fprintf(stderr,"Breakpoint status\n");
for(j=0; j<N_BP; j++)
if(wbp[j].in_use)
fprintf(stderr,"%d: %c %8.8x\n", j, (wbp[j].enabled ? 'y' : 'n'),
wbp[j].addr);
}
void disable_break(int bpnum)
{
if(bpnum >= N_BP || bpnum < 0)
fprintf(stderr,"Breakpoint number out of range\n");
wbp[bpnum].enabled = 0;
}
void enable_break(int bpnum)
{
if(bpnum >= N_BP || bpnum < 0)
fprintf(stderr,"Breakpoint number out of range\n");
wbp[bpnum].enabled = 1;
}
void add_break(unsigned long addr)
{
int j;
for(j=0; j<N_BP; j++)
if(!wbp[j].in_use)
{
wbp[j].in_use = 1;
wbp[j].enabled = 1;
wbp[j].addr = addr;
return;
}
fprintf(stderr,"No more breakpoints\n");
}
void insert_break(int flag)
{
unsigned char * pnt;
int j;
for(j=0; j<N_BP; j++)
if(wbp[j].enabled)
{
pnt = (unsigned char *) wbp[j].addr;
if(flag) {
wbp[j].databyte = *pnt;
*pnt = 0xcc; /* Change to an int 3 instruction */
} else {
*pnt = wbp[j].databyte;
}
}
}
/* Get the breakpoint number that we broke upon */
int get_bpnum(unsigned int addr)
{
int j;
for(j=0; j<N_BP; j++)
if(wbp[j].enabled)
if(wbp[j].addr == addr) return j;
return -1;
}