1 files changed, 36 insertions, 0 deletions
diff --git a/dev/DDK/DispatchKernelCall.S b/dev/DDK/DispatchKernelCall.S
new file mode 100644
index 00000000..b6ce8004
--- /dev/null
+++ b/dev/DDK/DispatchKernelCall.S
@@ -0,0 +1,36 @@
+/**
+ lang: asm
+ compiler: gnu
+ */
+
+.globl __kernelCallDispatch
+
+.text
+
+/* Really simple function, takes our va-list,
+    and brings it to the trap handler in the kernel. */
+
+#ifdef __DDK_AMD64__
+
+/* args rcx, rdx, r8, r9 */
+__kernelCallDispatch:
+    int $0x33
+    ret
+
+#elif defined(__DDK_POWER64__)
+
+/* args r8, r9, r10, r11 */
+__kernelCallDispatch:
+    /* There is no specific interrupt request id for a system call in POWER. */
+    sc
+    blr
+
+#elif defined(__DDK_ARM64__)
+
+/* args x0, x8, x9, x10, x11 is kept to tell that this is a kernel call */
+__kernelCallDispatch:
+    /* There is no specific interrupt request id for a system call in ARM64 as well. */
+    mov x11, #0x33
+    svc #0
+
+#endif