From 1cf06333160a9a6a4dabeba19f6d67ab55f0dac2 Mon Sep 17 00:00:00 2001
From: Fangrui Song <i@maskray.me>
Date: Sat, 16 Oct 2021 14:31:42 -0700
Subject: [PATCH] sys: Add definitions for RELR relative relocation format

MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D32526
---
 sys/sys/elf32.h       | 2 ++
 sys/sys/elf64.h       | 2 ++
 sys/sys/elf_common.h  | 3 +++
 sys/sys/elf_generic.h | 1 +
 4 files changed, 8 insertions(+)

diff --git a/sys/sys/elf32.h b/sys/sys/elf32.h
index ad44b7cf970a..c328ce3b2f80 100644
--- a/sys/sys/elf32.h
+++ b/sys/sys/elf32.h
@@ -152,6 +152,8 @@ typedef struct {
 /* Macro for constructing r_info from field values. */
 #define ELF32_R_INFO(sym, type)	(((sym) << 8) + (unsigned char)(type))
 
+typedef Elf32_Word Elf32_Relr;
+
 /*
  *	Note entry header
  */
diff --git a/sys/sys/elf64.h b/sys/sys/elf64.h
index 880166a3e83a..cc5c682e07da 100644
--- a/sys/sys/elf64.h
+++ b/sys/sys/elf64.h
@@ -166,6 +166,8 @@ typedef struct {
 #define	ELF64_R_TYPE_INFO(data, type)	\
 				(((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type))
 
+typedef Elf64_Xword Elf64_Relr;
+
 /*
  *	Note entry header
  */
diff --git a/sys/sys/elf_common.h b/sys/sys/elf_common.h
index 4df2751b07cf..e8eda4d91260 100644
--- a/sys/sys/elf_common.h
+++ b/sys/sys/elf_common.h
@@ -617,6 +617,9 @@ typedef struct {
 #define	DT_PREINIT_ARRAYSZ 33	/* Size in bytes of the array of
 				   pre-initialization functions. */
 #define	DT_MAXPOSTAGS	34	/* number of positive tags */
+#define	DT_RELRSZ	35	/* Total size of ElfNN_Relr relocations. */
+#define	DT_RELR		36	/* Address of ElfNN_Relr relocations. */
+#define	DT_RELRENT	37	/* Size of each ElfNN_Relr relocation. */
 #define	DT_LOOS		0x6000000d	/* First OS-specific */
 #define	DT_SUNW_AUXILIARY	0x6000000d	/* symbol auxiliary name */
 #define	DT_SUNW_RTLDINF		0x6000000e	/* ld.so.1 info (private) */
diff --git a/sys/sys/elf_generic.h b/sys/sys/elf_generic.h
index dcd44fe93b14..177de7339d3f 100644
--- a/sys/sys/elf_generic.h
+++ b/sys/sys/elf_generic.h
@@ -71,6 +71,7 @@ __ElfType(Phdr);
 __ElfType(Dyn);
 __ElfType(Rel);
 __ElfType(Rela);
+__ElfType(Relr);
 __ElfType(Sym);
 __ElfType(Verdef);
 __ElfType(Verdaux);