diff --git a/libc/kernel/arch-x86/asm/ptrace-abi.h b/libc/kernel/arch-x86/asm/ptrace-abi.h
index 7cd9425..bbc7e86 100644
--- a/libc/kernel/arch-x86/asm/ptrace-abi.h
+++ b/libc/kernel/arch-x86/asm/ptrace-abi.h
@@ -18,63 +18,28 @@
  ****************************************************************************/
 #ifndef _ASM_X86_PTRACE_ABI_H
 #define _ASM_X86_PTRACE_ABI_H
-#ifdef __i386__
 #define EBX 0
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ECX 1
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EDX 2
 #define ESI 3
 #define EDI 4
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EBP 5
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define EAX 6
 #define DS 7
 #define ES 8
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FS 9
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define GS 10
 #define ORIG_EAX 11
 #define EIP 12
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CS 13
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #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