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From: "H.J. Lu" <hjl.tools@gmail.com>
To: libc-alpha@sourceware.org
Subject: [PATCH v11 1/7] elf: Define DT_RELR related macros and types
Date: Fri, 22 Apr 2022 12:01:33 -0700	[thread overview]
Message-ID: <20220422190139.2615492-2-hjl.tools@gmail.com> (raw)
In-Reply-To: <20220422190139.2615492-1-hjl.tools@gmail.com>

---
 elf/elf.h           | 13 +++++++++++--
 scripts/glibcelf.py |  4 ++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/elf/elf.h b/elf/elf.h
index 0735f6b579..0195029188 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -443,7 +443,8 @@ typedef struct
 #define SHT_PREINIT_ARRAY 16		/* Array of pre-constructors */
 #define SHT_GROUP	  17		/* Section group */
 #define SHT_SYMTAB_SHNDX  18		/* Extended section indices */
-#define	SHT_NUM		  19		/* Number of defined types.  */
+#define SHT_RELR	  19            /* RELR relative relocations */
+#define	SHT_NUM		  20		/* Number of defined types.  */
 #define SHT_LOOS	  0x60000000	/* Start OS-specific.  */
 #define SHT_GNU_ATTRIBUTES 0x6ffffff5	/* Object attributes.  */
 #define SHT_GNU_HASH	  0x6ffffff6	/* GNU-style hash table.  */
@@ -662,6 +663,11 @@ typedef struct
   Elf64_Sxword	r_addend;		/* Addend */
 } Elf64_Rela;
 
+/* RELR relocation table entry */
+
+typedef Elf32_Word	Elf32_Relr;
+typedef Elf64_Xword	Elf64_Relr;
+
 /* How to extract and insert information held in the r_info field.  */
 
 #define ELF32_R_SYM(val)		((val) >> 8)
@@ -887,7 +893,10 @@ typedef struct
 #define DT_PREINIT_ARRAY 32		/* Array with addresses of preinit fct*/
 #define DT_PREINIT_ARRAYSZ 33		/* size in bytes of DT_PREINIT_ARRAY */
 #define DT_SYMTAB_SHNDX	34		/* Address of SYMTAB_SHNDX section */
-#define	DT_NUM		35		/* Number used */
+#define DT_RELRSZ	35		/* Total size of RELR relative relocations */
+#define DT_RELR		36		/* Address of RELR relative relocations */
+#define DT_RELRENT	37		/* Size of one RELR relative relocaction */
+#define	DT_NUM		38		/* Number used */
 #define DT_LOOS		0x6000000d	/* Start of OS-specific */
 #define DT_HIOS		0x6ffff000	/* End of OS-specific */
 #define DT_LOPROC	0x70000000	/* Start of processor-specific */
diff --git a/scripts/glibcelf.py b/scripts/glibcelf.py
index 8f7d0ca184..637f632038 100644
--- a/scripts/glibcelf.py
+++ b/scripts/glibcelf.py
@@ -298,6 +298,7 @@ class Sht(_OpenIntEnum):
     SHT_PREINIT_ARRAY = 16
     SHT_GROUP = 17
     SHT_SYMTAB_SHNDX = 18
+    SHT_RELR = 19
     SHT_GNU_ATTRIBUTES = 0x6ffffff5
     SHT_GNU_HASH = 0x6ffffff6
     SHT_GNU_LIBLIST = 0x6ffffff7
@@ -587,6 +588,9 @@ class Dt(_OpenIntEnum):
     DT_PREINIT_ARRAY = 32
     DT_PREINIT_ARRAYSZ = 33
     DT_SYMTAB_SHNDX = 34
+    DT_RELRSZ = 35
+    DT_RELR = 36
+    DT_RELRENT = 37
     DT_GNU_PRELINKED = 0x6ffffdf5
     DT_GNU_CONFLICTSZ = 0x6ffffdf6
     DT_GNU_LIBLISTSZ = 0x6ffffdf7
-- 
2.35.1


  reply	other threads:[~2022-04-22 19:01 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-22 19:01 [PATCH v11 0/7] Support DT_RELR relative relocation format H.J. Lu
2022-04-22 19:01 ` H.J. Lu [this message]
2022-04-22 22:36   ` [PATCH v11 1/7] elf: Define DT_RELR related macros and types Fangrui Song
2022-04-22 19:01 ` [PATCH v11 2/7] Add GLIBC_ABI_DT_RELR for DT_RELR support H.J. Lu
2022-04-22 22:37   ` Fangrui Song
2022-04-22 19:01 ` [PATCH v11 3/7] elf: Support DT_RELR relative relocation format [BZ #27924] H.J. Lu
2022-04-22 19:01 ` [PATCH v11 4/7] elf: Properly handle zero DT_RELA/DT_REL values H.J. Lu
2022-04-22 22:39   ` Fangrui Song
2022-04-22 19:01 ` [PATCH v11 5/7] elf: Add more DT_RELR tests H.J. Lu
2022-04-22 19:01 ` [PATCH v11 6/7] Add --disable-default-dt-relr H.J. Lu
2022-04-22 22:43   ` Fangrui Song
2022-04-22 19:01 ` [PATCH v11 7/7] NEWS: Mention DT_RELR support H.J. Lu
2022-04-22 22:40   ` Fangrui Song
2022-04-25 17:23 ` [PATCH v11 0/7] Support DT_RELR relative relocation format Adhemerval Zanella
2022-04-26 15:39   ` H.J. Lu

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