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Add watchpoint support to GDB server. 

Only read/write watchpoints are supported (set with the "awatch"
GDB command).
This commit is contained in:
Daniel Beer 2012-04-25 13:31:18 +12:00
parent f1e99c38d3
commit a2ee047cc0
1 changed files with 13 additions and 7 deletions
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20
ui/gdb.c
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@ -309,8 +309,8 @@ static int run(struct gdb_data *data, char *buf)
static int set_breakpoint(struct gdb_data *data, int enable, char *buf) static int set_breakpoint(struct gdb_data *data, int enable, char *buf)
{ {
char *parts[2]; char *parts[2];
int type;
address_t addr; address_t addr;
device_bptype_t type;
int i; int i;
/* Break up the arguments */ /* Break up the arguments */
@ -324,8 +324,16 @@ static int set_breakpoint(struct gdb_data *data, int enable, char *buf)
} }
/* We only support breakpoints */ /* We only support breakpoints */
type = atoi(parts[0]); switch (atoi(parts[0])) {
if (type < 0 || type > 1) { case 1:
type = DEVICE_BPTYPE_BREAK;
break;
case 4:
type = DEVICE_BPTYPE_WATCH;
break;
default:
printc_err("gdb: unsupported breakpoint type: %s\n", printc_err("gdb: unsupported breakpoint type: %s\n",
parts[0]); parts[0]);
return gdb_send(data, ""); return gdb_send(data, "");
@ -341,8 +349,7 @@ static int set_breakpoint(struct gdb_data *data, int enable, char *buf)
addr = strtoul(parts[1], NULL, 16); addr = strtoul(parts[1], NULL, 16);
if (enable) { if (enable) {
if (device_setbrk(device_default, -1, 1, addr, if (device_setbrk(device_default, -1, 1, addr, type) < 0) {
DEVICE_BPTYPE_BREAK) < 0) {
printc_err("gdb: can't add breakpoint at " printc_err("gdb: can't add breakpoint at "
"0x%04x\n", addr); "0x%04x\n", addr);
return gdb_send(data, "E00"); return gdb_send(data, "E00");
@ -350,8 +357,7 @@ static int set_breakpoint(struct gdb_data *data, int enable, char *buf)
printc("Breakpoint set at 0x%04x\n", addr); printc("Breakpoint set at 0x%04x\n", addr);
} else { } else {
device_setbrk(device_default, -1, 0, addr, device_setbrk(device_default, -1, 0, addr, type);
DEVICE_BPTYPE_BREAK);
printc("Breakpoint cleared at 0x%04x\n", addr); printc("Breakpoint cleared at 0x%04x\n", addr);
} }