diff --git a/libc/kernel/arch-x86/asm/ptrace-abi.h b/libc/kernel/arch-x86/asm/ptrace-abi.h
index bbc7e86..85306ea 100644
--- a/libc/kernel/arch-x86/asm/ptrace-abi.h
+++ b/libc/kernel/arch-x86/asm/ptrace-abi.h
@@ -18,28 +18,63 @@
  ****************************************************************************/
 #ifndef _ASM_X86_PTRACE_ABI_H
 #define _ASM_X86_PTRACE_ABI_H
+#ifdef __i386__
 #define EBX 0
-#define ECX 1
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ECX 1
 #define EDX 2
 #define ESI 3
 #define EDI 4
-#define EBP 5
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define EBP 5
 #define EAX 6
 #define DS 7
 #define ES 8
-#define FS 9
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define FS 9
 #define GS 10
 #define ORIG_EAX 11
 #define EIP 12
-#define CS 13
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define CS 13
 #define EFL 14
 #define UESP 15
 #define SS 16
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FRAME_SIZE 17
+#else
+#if defined(__ASSEMBLY__) || defined(__FRAME_OFFSETS)
+#define R15 0
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define R14 8
+#define R13 16
+#define R12 24
+#define RBP 32
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define RBX 40
+#define R11 48
+#define R10 56
+#define R9 64
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define R8 72
+#define RAX 80
+#define RCX 88
+#define RDX 96
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define RSI 104
+#define RDI 112
+#define ORIG_RAX 120
+#define RIP 128
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define CS 136
+#define EFLAGS 144
+#define RSP 152
+#define SS 160
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define ARGOFFSET R11
+#endif
+#define FRAME_SIZE 168
+#endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define PTRACE_GETREGS 12
 #define PTRACE_SETREGS 13