ref: 8417787f994891759273865919b34b5a2e6e8735
dir: /sys/src/cmd/5i/bpt.c/
#include <u.h> #include <libc.h> #include <bio.h> #include <mach.h> #include <ctype.h> #include "arm.h" void dobplist(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"); } } void breakpoint(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; } void delbpt(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"); } void brkchk(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; } } } }