Support for 64-bit AMD x86_64

Makefile
Added Files:
	a_lx_elf64.c amd_bxx.S amd_d_nrv2e.S amd_regs.h
	fold_elf64amd.S l_lx_elf64amd.S l_lx_elf64amd.lds

committer: jreiser <jreiser> 1131566835 +0000

src/stub/amd_regs.h

@@ -0,0 +1,15 @@
+/* NOTE: THE FIRST ARGUMENT IS arg1, NOT arg0. */
+#define arg1  rdi
+#define arg1l  edi
+#define arg2  rsi
+#define arg2l  esi
+#define arg3  rdx
+#define arg3l  edx
+#define arg4  rcx
+#define arg4l  ecx
+#define sys4   r10  # 4th arg to syscall is not in %rcx
+#define sys4l  r10d
+#define arg5  r8
+#define arg5l  r8d
+#define arg6  r9
+#define arg6l  r9d