From 7d21dabdddcc55a76f9f5633a61c8fb34b2d99d8 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sat, 23 Jul 2022 20:08:57 +0200
Subject: kernel: switch processes after execbuf_syscall

---
 src/kernel/execbuf.c | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

(limited to 'src/kernel/execbuf.c')

diff --git a/src/kernel/execbuf.c b/src/kernel/execbuf.c
index b96188d..1e4d8ed 100644
--- a/src/kernel/execbuf.c
+++ b/src/kernel/execbuf.c
@@ -20,23 +20,24 @@ static void try_fetch(struct process *proc, uint64_t *buf, size_t amt) {
 
 _Noreturn void execbuf_run(struct process *proc) {
 	uint64_t buf[5];
+
 	assert(proc == process_current); // idiotic, but needed because of _syscall.
 	assert(proc->state == PS_RUNNING);
 	assert(proc->execbuf.buf);
 
-	for (;;) {
-		try_fetch(proc, buf, 1);
-		switch (buf[0]) {
-			case EXECBUF_SYSCALL:
-				try_fetch(proc, buf, 5);
-				_syscall(buf[0], buf[1], buf[2], buf[3], buf[4]);
-				break;
-			case EXECBUF_JMP:
-				try_fetch(proc, buf, 1);
-				proc->regs.rcx = buf[0];
-				break;
-			default:
-				halt(proc);
-		}
+	try_fetch(proc, buf, 1);
+	switch (buf[0]) {
+		case EXECBUF_SYSCALL:
+			try_fetch(proc, buf, 5);
+			_syscall(buf[0], buf[1], buf[2], buf[3], buf[4]);
+			process_switch_any();
+
+		case EXECBUF_JMP:
+			try_fetch(proc, buf, 1);
+			proc->regs.rcx = buf[0];
+			execbuf_run(proc);
+
+		default:
+			halt(proc);
 	}
 }
-- 
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