cosmopolitan/tool/build/lib/breakpoint.c

58 lines
2.7 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/alg/arraylist2.internal.h"
#include "libc/assert.h"
#include "libc/log/log.h"
#include "tool/build/lib/breakpoint.h"
void PopBreakpoint(struct Breakpoints *bps) {
if (bps->i) {
--bps->i;
}
}
ssize_t PushBreakpoint(struct Breakpoints *bps, struct Breakpoint *b) {
int i;
for (i = 0; i < bps->i; ++i) {
if (bps->p[i].disable) {
memcpy(&bps->p[i], b, sizeof(*b));
return i;
}
}
return APPEND(&bps->p, &bps->i, &bps->n, b);
}
ssize_t IsAtBreakpoint(struct Breakpoints *bps, int64_t addr) {
size_t i;
for (i = bps->i; i--;) {
if (bps->p[i].disable) continue;
if (bps->p[i].addr == addr) {
if (bps->p[i].oneshot) {
bps->p[i].disable = true;
if (i == bps->i - 1) {
--bps->i;
}
}
return i;
}
}
return -1;
}