diff --git a/libc/include/elf.h b/libc/include/elf.h
index 37450b2..bda11f5 100644
--- a/libc/include/elf.h
+++ b/libc/include/elf.h
@@ -194,6 +194,14 @@
   Elf64_Word vna_next;
 } Elf64_Vernaux;
 
+/* Relocation table entry for relative (in section of type SHT_RELR).  */
+typedef Elf32_Word Elf32_Relr;
+typedef Elf64_Xword Elf64_Relr;
+#define ELF32_R_JUMP(val) ((val) >> 24)
+#define ELF32_R_BITS(val) ((val) & 0xffffff)
+#define ELF64_R_JUMP(val) ((val) >> 56)
+#define ELF64_R_BITS(val) ((val) & 0xffffffffffffff)
+
 /* http://www.sco.com/developers/gabi/latest/ch5.dynamic.html */
 #define DF_ORIGIN     0x00000001
 #define DF_SYMBOLIC   0x00000002
@@ -242,6 +250,13 @@
 #define DT_PREINIT_ARRAY 32
 #define DT_PREINIT_ARRAYSZ 33
 
+/* Experimental support for SHT_RELR sections. For details, see proposal
+   at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg */
+#define DT_RELR 0x6fffe000
+#define DT_RELRSZ 0x6fffe001
+#define DT_RELRENT 0x6fffe003
+#define DT_RELRCOUNT 0x6fffe005
+
 /* Android compressed rel/rela sections */
 #define DT_ANDROID_REL (DT_LOOS + 2)
 #define DT_ANDROID_RELSZ (DT_LOOS + 3)
@@ -494,6 +509,10 @@
 #define SHT_LOOS 0x60000000
 #define SHT_HIOS 0x6fffffff
 
+/* Experimental support for SHT_RELR sections. For details, see proposal
+   at https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg */
+#define SHT_RELR 0x6fffff00
+
 /* http://www.sco.com/developers/gabi/latest/ch4.symtab.html */
 #define STN_UNDEF 0