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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
/*
* addr2line simulation - only enough to make pprof work on Macs
*/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <mach.h>
void
printusage(int fd)
{
fprint(fd, "usage: addr2line binary\n");
fprint(fd, "reads addresses from standard input and writes two lines for each:\n");
fprint(fd, "\tfunction name\n");
fprint(fd, "\tfile:line\n");
}
void
usage(void)
{
printusage(2);
exits("usage");
}
void
main(int argc, char **argv)
{
int fd;
char *p;
uvlong pc;
Symbol s;
Fhdr fhdr;
Biobuf bin, bout;
char file[1024];
if(argc > 1 && strcmp(argv[1], "--help") == 0) {
printusage(1);
exits(0);
}
ARGBEGIN{
default:
usage();
}ARGEND
if(argc != 1)
usage();
fd = open(argv[0], OREAD);
if(fd < 0)
sysfatal("open %s: %r", argv[0]);
if(crackhdr(fd, &fhdr) <= 0)
sysfatal("crackhdr: %r");
machbytype(fhdr.type);
if(syminit(fd, &fhdr) <= 0)
sysfatal("syminit: %r");
Binit(&bin, 0, OREAD);
Binit(&bout, 1, OWRITE);
for(;;) {
p = Brdline(&bin, '\n');
if(p == nil)
break;
p[Blinelen(&bin)-1] = '\0';
pc = strtoull(p, 0, 16);
if(!findsym(pc, CTEXT, &s))
s.name = "??";
if(!fileline(file, sizeof file, pc))
strcpy(file, "??:0");
Bprint(&bout, "%s\n%s\n", s.name, file);
}
Bflush(&bout);
exits(0);
}
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