diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
index 25b2fb7d..e4d74ad9 100644
--- a/arch/x86/include/asm/elf.h
+++ b/arch/x86/include/asm/elf.h
@@ -77,6 +77,12 @@ extern "C" {
 #define ELF_PT_LOPROC		0x70000000	/* Start of processor-specific */
 #define ELF_PT_HIPROC		0x7fffffff	/* End of processor-specific */
 
+/* These constants define the permissions on sections in the program
+   header, p_flags. */
+#define PF_R			0x4
+#define PF_W			0x2
+#define PF_X			0x1
+
 typedef struct {
 	uint32_t magic;
 	uint8_t _class;