Syscall first parameter

2021-02-26 18:10:25 +01:00 · 2021-02-26 18:10:25 +01:00 · aa0207cf67
parent bc3e8323bd
commit aa0207cf67
1 changed files with 5 additions and 0 deletions
--- a/include/asm.h
+++ b/include/asm.h
@ -38,6 +38,11 @@
 //
 #define interrupt(n) asm volatile ("int %0" : : "N" (n) : "cc", "memory")

+//
+// Trigger a system call
+//
+#define syscall(n) asm volatile ("movq %0, %rdi\nint $0x80" : : "N" (n) : "cc", "memory")
+
 //
 // Returns whether IRQs are enabled
 //