91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/* MSPDebug - debugging tool for MSP430 MCUs
|
|
* Copyright (C) 2009, 2010 Daniel Beer
|
|
*
|
|
* 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "device.h"
|
|
|
|
device_t device_default;
|
|
|
|
static int addbrk(device_t dev, uint16_t addr, device_bptype_t type)
|
|
{
|
|
int i;
|
|
int which = -1;
|
|
struct device_breakpoint *bp;
|
|
|
|
for (i = 0; i < dev->max_breakpoints; i++) {
|
|
bp = &dev->breakpoints[i];
|
|
|
|
if (bp->flags & DEVICE_BP_ENABLED) {
|
|
if (bp->addr == addr && bp->type == type)
|
|
return i;
|
|
} else if (which < 0) {
|
|
which = i;
|
|
}
|
|
}
|
|
|
|
if (which < 0)
|
|
return -1;
|
|
|
|
bp = &dev->breakpoints[which];
|
|
bp->flags = DEVICE_BP_ENABLED | DEVICE_BP_DIRTY;
|
|
bp->addr = addr;
|
|
bp->type = type;
|
|
|
|
return which;
|
|
}
|
|
|
|
static void delbrk(device_t dev, uint16_t addr, device_bptype_t type)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < dev->max_breakpoints; i++) {
|
|
struct device_breakpoint *bp = &dev->breakpoints[i];
|
|
|
|
if ((bp->flags & DEVICE_BP_ENABLED) &&
|
|
bp->addr == addr && bp->type == type) {
|
|
bp->flags = DEVICE_BP_DIRTY;
|
|
bp->addr = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
int device_setbrk(device_t dev, int which, int enabled, address_t addr,
|
|
device_bptype_t type)
|
|
{
|
|
if (which < 0) {
|
|
if (enabled)
|
|
return addbrk(dev, addr, type);
|
|
|
|
delbrk(dev, addr, type);
|
|
} else {
|
|
struct device_breakpoint *bp = &dev->breakpoints[which];
|
|
int new_flags = enabled ? DEVICE_BP_ENABLED : 0;
|
|
|
|
if (!enabled)
|
|
addr = 0;
|
|
|
|
if (bp->addr != addr ||
|
|
(bp->flags & DEVICE_BP_ENABLED) != new_flags) {
|
|
bp->flags = new_flags | DEVICE_BP_DIRTY;
|
|
bp->addr = addr;
|
|
bp->type = type;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|