syscalls: pause

kernel-src/arch/x86-64/syscall.asm

@@ -73,6 +73,7 @@ extern syscall_socketpair
 extern syscall_getsockname
 extern syscall_getpeername
 extern syscall_chroot
+extern syscall_pause
 syscalltab:
 dq syscall_print
 dq syscall_mmap
@@ -148,7 +149,8 @@ dq syscall_socketpair
 dq syscall_getsockname
 dq syscall_getpeername
 dq syscall_chroot
-syscallcount equ 74
+dq syscall_pause
+syscallcount equ 75
 section .text
 global arch_syscall_entry
 ; on entry:

kernel-src/arch/x86-64/syscalllog.c

@@ -5,7 +5,7 @@
 
 #ifdef SYSCALL_LOGGING
 
-#define SYSCALL_COUNT 74
+#define SYSCALL_COUNT 75
 #define LOGSTR(x) arch_e9_puts(x)
 
 static char *name[] = {
@@ -82,7 +82,8 @@ static char *name[] = {
 	"socketpair",
 	"getsockname",
 	"getpeername",
-	"chroot"
+	"chroot",
+	"pause"
 };
 
 static char *args[] = {
@@ -159,7 +160,8 @@ static char *args[] = {
 	"domain %d type %d protocol %d", // socketpair
 	"fd %d addr %p addrlen %p", // getsockname
 	"fd %d addr %p addrlen %p",  // getpeername
-	"path %s" // chroot
+	"path %s", // chroot
+	"N/A"
 };
 
 #endif

kernel-src/sys/syscalls/pause.c

@@ -0,0 +1,13 @@
+#include <kernel/syscalls.h>
+
+syscallret_t syscall_pause(context_t *) {
+	syscallret_t ret = {
+		.errno = EINTR,
+		.ret = -1
+	};
+
+	sched_preparesleep(true);
+	sched_yield();
+
+	return ret;
+}