From 8e268df60bde6b5548b849cc9b83a224a74b3e43 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Wed, 17 Sep 2025 19:21:57 -0400
Subject: kern: Add syscall entry and SYS_exit syscall

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/arch/amd64/cpu/trap.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src/sys/arch/amd64/cpu/trap.c')

diff --git a/src/sys/arch/amd64/cpu/trap.c b/src/sys/arch/amd64/cpu/trap.c
index 046263b..6ddc079 100644
--- a/src/sys/arch/amd64/cpu/trap.c
+++ b/src/sys/arch/amd64/cpu/trap.c
@@ -36,6 +36,7 @@
 #include <sys/cdefs.h>
 #include <sys/panic.h>
 #include <sys/syslog.h>
+#include <sys/syscall.h>
 #include <machine/trap.h>
 
 /*
@@ -145,6 +146,24 @@ trapframe_dump(struct trapframe *tf)
         tf->rbp, tf->rsp, tf->rip);
 }
 
+void
+trap_syscall(struct trapframe *tf)
+{
+    struct syscall_args scargs = {
+        .arg[0] = tf->rdi,
+        .arg[1] = tf->rsi,
+        .arg[2] = tf->rdx,
+        .arg[3] = tf->r10,
+        .arg[4] = tf->r9,
+        .arg[5] = tf->r8,
+        .tf = tf
+    };
+
+    if (tf->rax < MAX_SYSCALLS && tf->rax > 0) {
+        tf->rax = g_sctab[tf->rax](&scargs);
+    }
+}
+
 void
 trap_handler(struct trapframe *tf)
 {
-- 
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