From 90cf691b801a339ebd8b834fd874ec332ea69d78 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sun, 8 Sep 2019 17:20:06 +0000
Subject: mgdb: winnt_wait(): handle event->evttype, added winnt_wait_event().

---
 overlay/mgdb/gdb/winnt-nat.c | 64 +++++++++++++++++++++++++++++++-------------
 1 file changed, 46 insertions(+), 18 deletions(-)

diff --git a/overlay/mgdb/gdb/winnt-nat.c b/overlay/mgdb/gdb/winnt-nat.c
index ab7dc83..267395b 100644
--- a/overlay/mgdb/gdb/winnt-nat.c
+++ b/overlay/mgdb/gdb/winnt-nat.c
@@ -431,11 +431,7 @@ static void winnt_detach (struct target_ops * t, const char * args, int from_tty
 	winnt_mourn_inferior(t);
 }
 
-static ptid_t winnt_wait(
-	struct target_ops * t,
-	ptid_t ptid,
-	struct target_waitstatus * waitstatus,
-	int target_options)
+static struct __dbg_event * winnt_wait_event(ptid_t ptid)
 {
 	struct __dbg_event	event;
 	struct winnt_process *	pdbg;
@@ -449,50 +445,82 @@ static ptid_t winnt_wait(
 	if (ptid.pid  < 0)
 		for (pdbg=plist, pcap=&plist[pcnt]; pdbg<pcap; pdbg++)
 			if (pdbg->event.systid)
-				return ptid_build(
-					pdbg->event.syspid,0,
-					pdbg->event.systid);
+				return &pdbg->event;
 
 	if (ptid.pid > 0) {
 		if (!(pidinfo = winnt_process_record(event.syspid)))
 			winnt_perror("internal error: record not found",event.syspid);
 
 		if (pidinfo->event.systid)
-			return ptid_build(
-				pidinfo->event.syspid,0,
-				pidinfo->event.systid);
+			return &pidinfo->event;
 	}
 
 	if (pcnt*sizeof(*pfds) < sizeof(pollfdbuf))
 		pfds = pollfdbuf;
 	else if (!(pfds = (struct pollfd *)calloc(pcnt,sizeof(*pfds))))
-		return null_ptid;
+		return 0;
 
 	nfds = (ptid.pid > 0)
 		? winnt_poll_one_init(pfds,ptid.pid)
 		: winnt_poll_init(pfds);
 
 	if (poll(pfds,nfds,-1) < 0)
-		return null_ptid;
+		return 0;
 
 	for (i=0, pfd=0; i<nfds && !pfd; i++)
 		if (pfds[i].revents & POLLIN)
 			pfd = &pfds[i];
 
 	if (!pfd)
-		return null_ptid;
+		return 0;
 
 	if (__dbg_event_query_one(pfd->fd,&event) < 0)
-		return null_ptid;
+		return 0;
 
 	if (!(pidinfo = winnt_process_record(event.syspid)))
 		winnt_perror("internal error: record not found",event.syspid);
 
 	memcpy(&pidinfo->event,&event,sizeof(event));
 
-	return ptid_build(
-		event.syspid,0,
-		event.systid);
+	return &pidinfo->event;
+}
+
+static ptid_t winnt_wait(
+	struct target_ops * t,
+	ptid_t ptid,
+	struct target_waitstatus * waitstatus,
+	int target_options)
+{
+	struct __dbg_event * event;
+
+	if (!(event = winnt_wait_event(ptid)))
+		return null_ptid;
+
+	switch (event->evttype) {
+		case __DBG_STATE_EXCEPTION:
+		case __DBG_STATE_BREAKPOINT:
+		case __DBG_STATE_SINGLE_STEP:
+			waitstatus->kind = TARGET_WAITKIND_STOPPED;
+			break;
+
+		case __DBG_STATE_CREATE_PROCESS:
+		case __DBG_STATE_CREATE_THREAD:
+		case __DBG_STATE_IDLE:
+		case __DBG_STATE_REPLY_PENDING:
+		case __DBG_STATE_DLL_LOAD:
+		case __DBG_STATE_DLL_UNLOAD:
+		case __DBG_STATE_EXIT_THREAD:
+		case __DBG_STATE_EXIT_PROCESS:
+			waitstatus->kind = TARGET_WAITKIND_SPURIOUS;
+			break;
+	}
+
+	inferior_ptid.pid = event->syspid;
+	inferior_ptid.tid = event->systid;
+
+	target_terminal_ours();
+
+	return inferior_ptid;
 }
 
 static void winnt_resume (
-- 
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