diff --git a/libc/arch-x86/include/machine/asm.h b/libc/arch-x86/include/machine/asm.h
index 2e8d298..5ccf78f 100644
--- a/libc/arch-x86/include/machine/asm.h
+++ b/libc/arch-x86/include/machine/asm.h
@@ -94,7 +94,7 @@
 #endif
 
 #define _ENTRY(x) \
-	.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
+	.text; _ALIGN_TEXT; .globl x; .type x,@function; x: .cfi_startproc;
 #define _LABEL(x) \
 	.globl x; x:
 
@@ -175,7 +175,7 @@
 #define	NENTRY(y)	_ENTRY(_C_LABEL(y))
 #define	ASENTRY(y)	_ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
 #define	LABEL(y)	_LABEL(_C_LABEL(y))
-#define	END(y)		.size y, . - y
+#define	END(y)		.cfi_endproc; .size y, . - y
 
 #define	ASMSTR		.asciz