Added syscall templates

1 files changed, 57 insertions, 0 deletions

diff --git a/lib/sys.c b/lib/sys.c
new file mode 100644
index 0000000..d676445
--- /dev/null
+++ b/lib/sys.c
@@ -0,0 +1,57 @@
+// MIT License, Copyright (c) 2020 Marvin Borner
+// Syscall implementation
+
+#include <sys.h>
+
+/**
+ * Definitions
+ */
+
+int sys0(enum sys num)
+{
+	int a;
+	__asm__ volatile("int $0x80" : "=a"(a) : "0"(num));
+	return a;
+}
+
+int sys1(enum sys num, int d1)
+{
+	int a;
+	__asm__ volatile("int $0x80" : "=a"(a) : "0"(num), "b"((int)d1));
+	return a;
+}
+
+int sys2(enum sys num, int d1, int d2)
+{
+	int a;
+	__asm__ volatile("int $0x80" : "=a"(a) : "0"(num), "b"((int)d1), "c"((int)d2));
+	return a;
+}
+
+int sys3(enum sys num, int d1, int d2, int d3)
+{
+	int a;
+	__asm__ volatile("int $0x80"
+			 : "=a"(a)
+			 : "0"(num), "b"((int)d1), "c"((int)d2), "d"((int)d3));
+	return a;
+}
+
+int sys4(enum sys num, int d1, int d2, int d3, int d4)
+{
+	int a;
+	__asm__ volatile("int $0x80"
+			 : "=a"(a)
+			 : "0"(num), "b"((int)d1), "c"((int)d2), "d"((int)d3), "S"((int)d4));
+	return a;
+}
+
+int sys5(enum sys num, int d1, int d2, int d3, int d4, int d5)
+{
+	int a;
+	__asm__ volatile("int $0x80"
+			 : "=a"(a)
+			 : "0"(num), "b"((int)d1), "c"((int)d2), "d"((int)d3), "S"((int)d4),
+			   "D"((int)d5));
+	return a;
+}