D43664.diff
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	diff --git a/usr.sbin/bhyve/gdb.c b/usr.sbin/bhyve/gdb.c
	--- a/usr.sbin/bhyve/gdb.c
	+++ b/usr.sbin/bhyve/gdb.c
	@@ -1035,6 +1035,29 @@
	finish_packet();
	}

	+static void
	+gdb_read_one_reg(const uint8_t *data, size_t len)
	+{
	+ uint64_t regval;
	+ uintmax_t reg;
	+
	+ reg = parse_integer(data, len);
	+ if (reg >= nitems(gdb_regset)) {
	+ send_error(EINVAL);
	+ return;
	+ }
	+
	+ if (vm_get_register(vcpus[cur_vcpu], gdb_regset[reg].id, &regval) ==
	+ -1) {
	+ send_error(errno);
	+ return;
	+ }
	+
	+ start_packet();
	+ append_unsigned_native(regval, gdb_regset[reg].size);
	+ finish_packet();
	+}
	+
	static void
	gdb_read_mem(const uint8_t *data, size_t len)
	{
	@@ -1597,10 +1620,12 @@

	/* TODO: Resume any stopped CPUs. */
	break;
	- case 'g': {
	+ case 'g':
	gdb_read_regs();
	break;
	- }
	+ case 'p':
	+ gdb_read_one_reg(data + 1, len - 1);
	+ break;
	case 'H': {
	int tid;

	@@ -1672,7 +1697,6 @@
	case 'v':
	/* Handle 'vCont' */
	/* 'vCtrlC' */
	- case 'p': /* TODO */
	case 'P': /* TODO */
	case 'Q': /* TODO */
	case 't': /* TODO */