diff --git a/libc/kernel/uapi/asm-arm64/asm/hwcap.h b/libc/kernel/uapi/asm-arm64/asm/hwcap.h
index ebe2fa4..dcca79b 100644
--- a/libc/kernel/uapi/asm-arm64/asm/hwcap.h
+++ b/libc/kernel/uapi/asm-arm64/asm/hwcap.h
@@ -67,4 +67,5 @@
 #define HWCAP2_BF16 (1 << 14)
 #define HWCAP2_DGH (1 << 15)
 #define HWCAP2_RNG (1 << 16)
+#define HWCAP2_BTI (1 << 17)
 #endif
diff --git a/libc/kernel/uapi/asm-arm64/asm/mman.h b/libc/kernel/uapi/asm-arm64/asm/mman.h
index 6c23fb6..ed77d09 100644
--- a/libc/kernel/uapi/asm-arm64/asm/mman.h
+++ b/libc/kernel/uapi/asm-arm64/asm/mman.h
@@ -16,4 +16,8 @@
  ***
  ****************************************************************************
  ****************************************************************************/
+#ifndef _UAPI__ASM_MMAN_H
+#define _UAPI__ASM_MMAN_H
 #include <asm-generic/mman.h>
+#define PROT_BTI 0x10
+#endif
diff --git a/libc/kernel/uapi/asm-arm64/asm/ptrace.h b/libc/kernel/uapi/asm-arm64/asm/ptrace.h
index 23ab407..31ba117 100644
--- a/libc/kernel/uapi/asm-arm64/asm/ptrace.h
+++ b/libc/kernel/uapi/asm-arm64/asm/ptrace.h
@@ -34,6 +34,7 @@
 #define PSR_I_BIT 0x00000080
 #define PSR_A_BIT 0x00000100
 #define PSR_D_BIT 0x00000200
+#define PSR_BTYPE_MASK 0x00000c00
 #define PSR_SSBS_BIT 0x00001000
 #define PSR_PAN_BIT 0x00400000
 #define PSR_UAO_BIT 0x00800000
@@ -42,10 +43,15 @@
 #define PSR_C_BIT 0x20000000
 #define PSR_Z_BIT 0x40000000
 #define PSR_N_BIT 0x80000000
+#define PSR_BTYPE_SHIFT 10
 #define PSR_f 0xff000000
 #define PSR_s 0x00ff0000
 #define PSR_x 0x0000ff00
 #define PSR_c 0x000000ff
+#define PSR_BTYPE_NONE (0b00 << PSR_BTYPE_SHIFT)
+#define PSR_BTYPE_JC (0b01 << PSR_BTYPE_SHIFT)
+#define PSR_BTYPE_C (0b10 << PSR_BTYPE_SHIFT)
+#define PSR_BTYPE_J (0b11 << PSR_BTYPE_SHIFT)
 #define PTRACE_SYSEMU 31
 #define PTRACE_SYSEMU_SINGLESTEP 32
 #ifndef __ASSEMBLY__