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[GDB] Add watch and rwatch hardware watchpoints

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This commit is contained in:
Stefan Hajnoczi
2008-06-12 16:56:20 +01:00
committed by Michael Brown
parent 6e670b5f38
commit 19386ec2c8
7 changed files with 221 additions and 2 deletions
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22
src/core/gdbstub.c
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@@ -249,6 +249,22 @@ static void gdbstub_continue ( struct gdbstub *stub, int single_step ) {
/* Reply will be sent when we hit the next breakpoint or interrupt */
}
static void gdbstub_breakpoint ( struct gdbstub *stub ) {
unsigned long args [ 3 ];
int enable = stub->payload [ 0 ] == 'Z' ? 1 : 0;
if ( !gdbstub_get_packet_args ( stub, args, sizeof args / sizeof args [ 0 ], NULL ) ) {
gdbstub_send_errno ( stub, POSIX_EINVAL );
return;
}
if ( gdbmach_set_breakpoint ( args [ 0 ], args [ 1 ], args [ 2 ], enable ) ) {
gdbstub_send_ok ( stub );
} else {
/* Not supported */
stub->len = 0;
gdbstub_tx_packet ( stub );
}
}
static void gdbstub_rx_packet ( struct gdbstub *stub ) {
switch ( stub->payload [ 0 ] ) {
case '?':
@@ -275,6 +291,10 @@ static void gdbstub_rx_packet ( struct gdbstub *stub ) {
gdbstub_send_ok ( stub );
}
break;
case 'Z': /* Insert breakpoint */
case 'z': /* Remove breakpoint */
gdbstub_breakpoint ( stub );
break;
default:
stub->len = 0;
gdbstub_tx_packet ( stub );
@@ -341,7 +361,7 @@ static struct gdbstub stub = {
.parse = gdbstub_state_new
};
__cdecl void gdbstub_handler ( int signo, gdbreg_t *regs ) {
void gdbstub_handler ( int signo, gdbreg_t *regs ) {
char packet [ SIZEOF_PAYLOAD + 4 ];
size_t len, i;