kern: Add syscall entry and SYS_exit syscall

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 19 insertions, 0 deletions

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>
 
 /*
@@ -146,6 +147,24 @@ trapframe_dump(struct trapframe *tf)
 }
 
 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)
 {
     trapframe_dump(tf);