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Show triggered breakpoints (and watchpoints in sim). 

The "regs" command indicates when the PC is sitting on an enabled
breakpoint. The simulator emits debug output when a watchpoint is
triggered by a simulated instruction.
This commit is contained in:
Daniel Beer 2015-12-11 08:38:42 +13:00
parent 38ea6143cd
commit 89e6174b9f
2 changed files with 16 additions and 0 deletions
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2
drivers/sim.c
View File

@ -68,6 +68,8 @@ static void watchpoint_check(struct sim_device *dev, uint16_t addr,
((bp->type == DEVICE_BPTYPE_WATCH ||
(bp->type == DEVICE_BPTYPE_READ && !is_write) ||
(bp->type == DEVICE_BPTYPE_WRITE && is_write)))) {
printc_dbg("Watchpoint %d triggered (0x%04x, %s)\n",
i, addr, is_write ? "WRITE" : "READ");
dev->watchpoint_hit = 1;
return;
}

14
ui/devcmd.c
View File

@ -38,11 +38,25 @@ int cmd_regs(char **arg)
address_t regs[DEVICE_NUM_REGS];
uint8_t code[16];
int len = sizeof(code);
int i;
(void)arg;
if (device_getregs(regs) < 0)
return -1;
/* Check for breakpoints */
for (i = 0; i < device_default->max_breakpoints; i++) {
const struct device_breakpoint *bp =
&device_default->breakpoints[i];
if ((bp->flags & DEVICE_BP_ENABLED) &&
(bp->type == DEVICE_BPTYPE_BREAK) &&
(bp->addr == regs[MSP430_REG_PC]))
printc("Breakpoint %d triggered (0x%04x)\n",
i, bp->addr);
}
show_regs(regs);
/* Try to disassemble the instruction at PC */