/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <bio.h>#include <mach.h>#include <ctype.h>#define Extern extern#include "mips.h" voiddobplist(void){	Breakpoint *b;	char buf[512]; 	for(b = bplist; b; b = b->next) {		switch(b->type) {		case Instruction:			Bprint(bioout, "0x%lux,%d:b %d done, at ", b->addr, b->count, b->done);			symoff(buf, sizeof(buf), b->addr, CTEXT);			Bprint(bioout, buf);			break; 		case Access:			Bprint(bioout, "0x%lux,%d:ba %d done, at ", b->addr, b->count, b->done);			symoff(buf, sizeof(buf), b->addr, CDATA);			Bprint(bioout, buf);			break; 		case Read:			Bprint(bioout, "0x%lux,%d:br %d done, at ", b->addr, b->count, b->done);			symoff(buf, sizeof(buf), b->addr, CDATA);			Bprint(bioout, buf);			break; 		case Write:			Bprint(bioout, "0x%lux,%d:bw %d done, at ", b->addr, b->count, b->done);			symoff(buf, sizeof(buf), b->addr, CDATA);			Bprint(bioout, buf);			break; 		case Equal:			Bprint(bioout, "0x%lux,%d:be at ", b->addr, b->count);			symoff(buf, sizeof(buf), b->addr, CDATA);			Bprint(bioout, buf);			break;		}		Bprint(bioout, "\n");	}} voidbreakpoint(char *addr, char *cp){	Breakpoint *b;	int type; 	cp = nextc(cp);	type = Instruction;	switch(*cp) {	case 'r':		membpt++;		type = Read;		break;	case 'a':		membpt++;		type = Access;		break;	case 'w':		membpt++;		type = Write;		break;	case 'e':		membpt++;		type = Equal;		break;	}	b = emalloc(sizeof(Breakpoint));	b->addr = expr(addr);	b->type = type;	b->count = cmdcount;	b->done = cmdcount; 	b->next = bplist;	bplist = b;} voiddelbpt(char *addr){	Breakpoint *b, **l;	ulong baddr; 	baddr = expr(addr);	l = &bplist;	for(b = *l; b; b = b->next) {		if(b->addr == baddr) {			if(b->type != Instruction)				membpt++;			*l = b->next;			free(b);			return;		}		l = &b->next;		} 	Bprint(bioout, "no breakpoint\n");} voidbrkchk(ulong addr, int type){	Breakpoint *b; 	for(b = bplist; b; b = b->next) {		if(b->addr == addr && (b->type&type)) {			if(b->type == Equal && getmem_4(addr) == b->count) {				count = 1;				atbpt = 1;				return;			}			if(--b->done == 0) {				b->done = b->count;				count = 1;				atbpt = 1;				return;			}		}	}	}