1 files changed, 78 insertions, 0 deletions
diff --git a/lib/mlibc/sysdeps/linux/x86_64/arch-syscall.cpp b/lib/mlibc/sysdeps/linux/x86_64/arch-syscall.cpp
new file mode 100644
index 0000000..d2ebbe7
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86_64/arch-syscall.cpp
@@ -0,0 +1,78 @@
+#include <sys/syscall.h>
+#include <bits/syscall.h>
+
+using sc_word_t = __sc_word_t;
+
+sc_word_t __do_syscall0(long sc) {
+	sc_word_t ret;
+	asm volatile ("syscall" : "=a"(ret)
+			: "a"(sc)
+			: "rcx", "r11", "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall1(long sc,
+		sc_word_t arg1) {
+	sc_word_t ret;
+	asm volatile ("syscall" : "=a"(ret)
+			: "a"(sc), "D"(arg1)
+			: "rcx", "r11", "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall2(long sc,
+		sc_word_t arg1, sc_word_t arg2) {
+	sc_word_t ret;
+	asm volatile ("syscall" : "=a"(ret)
+			: "a"(sc), "D"(arg1), "S"(arg2)
+			: "rcx", "r11", "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall3(long sc,
+		sc_word_t arg1, sc_word_t arg2, sc_word_t arg3) {
+	sc_word_t ret;
+	asm volatile ("syscall" : "=a"(ret)
+			: "a"(sc), "D"(arg1), "S"(arg2), "d"(arg3)
+			: "rcx", "r11", "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall4(long sc,
+		sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
+		sc_word_t arg4) {
+	sc_word_t ret;
+	register sc_word_t arg4_reg asm("r10") = arg4;
+	asm volatile ("syscall" : "=a"(ret)
+			: "a"(sc), "D"(arg1), "S"(arg2), "d"(arg3),
+				"r"(arg4_reg)
+			: "rcx", "r11", "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall5(long sc,
+		sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
+		sc_word_t arg4, sc_word_t arg5) {
+	sc_word_t ret;
+	register sc_word_t arg4_reg asm("r10") = arg4;
+	register sc_word_t arg5_reg asm("r8") = arg5;
+	asm volatile ("syscall" : "=a"(ret)
+			: "a"(sc), "D"(arg1), "S"(arg2), "d"(arg3),
+				"r"(arg4_reg), "r"(arg5_reg)
+			: "rcx", "r11", "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall6(long sc,
+		sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
+		sc_word_t arg4, sc_word_t arg5, sc_word_t arg6) {
+	sc_word_t ret;
+	register sc_word_t arg4_reg asm("r10") = arg4;
+	register sc_word_t arg5_reg asm("r8") = arg5;
+	register sc_word_t arg6_reg asm("r9") = arg6;
+	asm volatile ("syscall" : "=a"(ret)
+			: "a"(sc), "D"(arg1), "S"(arg2), "d"(arg3),
+				"r"(arg4_reg), "r"(arg5_reg), "r"(arg6_reg)
+			: "rcx", "r11", "memory");
+	return ret;
+}