[llvm] ELFRelocs/AArch64: strip R_AARCH64_AUTH_RELATIVE, per doc (PR #86955)
Ramkumar Ramachandra via llvm-commits
llvm-commits at lists.llvm.org
Thu Mar 28 11:26:15 PDT 2024
https://github.com/artagnon updated https://github.com/llvm/llvm-project/pull/86955
>From f72d9e5d7f26ae64a122725e5d8dc91cf0a3e87d Mon Sep 17 00:00:00 2001
From: Ramkumar Ramachandra <ram.ramachandra at arm.com>
Date: Fri, 15 Mar 2024 14:30:42 +0000
Subject: [PATCH] ELFRelocs/AArch64: update canonical reference URL (NFC)
Update the URL of the reference to be used for AArch64.def, and add some
comments. The canonical aaelf64 document can be found at:
https://github.com/ARM-software/abi-aa/blob/main/aaelf64/aaelf64.rst
---
.../llvm/BinaryFormat/ELFRelocs/AArch64.def | 20 +++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/llvm/include/llvm/BinaryFormat/ELFRelocs/AArch64.def b/llvm/include/llvm/BinaryFormat/ELFRelocs/AArch64.def
index 5fb3fa4aeb7beb..f39b05349158d3 100644
--- a/llvm/include/llvm/BinaryFormat/ELFRelocs/AArch64.def
+++ b/llvm/include/llvm/BinaryFormat/ELFRelocs/AArch64.def
@@ -1,18 +1,19 @@
-
#ifndef ELF_RELOC
#error "ELF_RELOC must be defined"
#endif
-// Based on ABI release 1.1-beta, dated 6 November 2013. NB: The cover page of
-// this document, IHI0056C_beta_aaelf64.pdf, on infocenter.arm.com, still
-// labels this as release 1.0.
+// Based on released ABI: https://github.com/ARM-software/abi-aa, aaelf64.
+// ELF64
+// Null relocation: also 0x100 for ELF64
ELF_RELOC(R_AARCH64_NONE, 0)
+// Data relocations
ELF_RELOC(R_AARCH64_ABS64, 0x101)
ELF_RELOC(R_AARCH64_ABS32, 0x102)
ELF_RELOC(R_AARCH64_ABS16, 0x103)
ELF_RELOC(R_AARCH64_PREL64, 0x104)
ELF_RELOC(R_AARCH64_PREL32, 0x105)
ELF_RELOC(R_AARCH64_PREL16, 0x106)
+// Static relocations
ELF_RELOC(R_AARCH64_MOVW_UABS_G0, 0x107)
ELF_RELOC(R_AARCH64_MOVW_UABS_G0_NC, 0x108)
ELF_RELOC(R_AARCH64_MOVW_UABS_G1, 0x109)
@@ -60,11 +61,13 @@ ELF_RELOC(R_AARCH64_LD64_GOT_LO12_NC, 0x138)
ELF_RELOC(R_AARCH64_LD64_GOTPAGE_LO15, 0x139)
ELF_RELOC(R_AARCH64_PLT32, 0x13a)
ELF_RELOC(R_AARCH64_GOTPCREL32, 0x13b)
+// General dynamic TLS relocations
ELF_RELOC(R_AARCH64_TLSGD_ADR_PREL21, 0x200)
ELF_RELOC(R_AARCH64_TLSGD_ADR_PAGE21, 0x201)
ELF_RELOC(R_AARCH64_TLSGD_ADD_LO12_NC, 0x202)
ELF_RELOC(R_AARCH64_TLSGD_MOVW_G1, 0x203)
ELF_RELOC(R_AARCH64_TLSGD_MOVW_G0_NC, 0x204)
+// Local dynamic TLS relocations
ELF_RELOC(R_AARCH64_TLSLD_ADR_PREL21, 0x205)
ELF_RELOC(R_AARCH64_TLSLD_ADR_PAGE21, 0x206)
ELF_RELOC(R_AARCH64_TLSLD_ADD_LO12_NC, 0x207)
@@ -92,6 +95,7 @@ ELF_RELOC(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC, 0x21c)
ELF_RELOC(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21, 0x21d)
ELF_RELOC(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC, 0x21e)
ELF_RELOC(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19, 0x21f)
+// Local exec TLS relocations
ELF_RELOC(R_AARCH64_TLSLE_MOVW_TPREL_G2, 0x220)
ELF_RELOC(R_AARCH64_TLSLE_MOVW_TPREL_G1, 0x221)
ELF_RELOC(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC, 0x222)
@@ -108,6 +112,7 @@ ELF_RELOC(R_AARCH64_TLSLE_LDST32_TPREL_LO12, 0x22c)
ELF_RELOC(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC, 0x22d)
ELF_RELOC(R_AARCH64_TLSLE_LDST64_TPREL_LO12, 0x22e)
ELF_RELOC(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC, 0x22f)
+// TLS descriptor relocations
ELF_RELOC(R_AARCH64_TLSDESC_LD_PREL19, 0x230)
ELF_RELOC(R_AARCH64_TLSDESC_ADR_PREL21, 0x231)
ELF_RELOC(R_AARCH64_TLSDESC_ADR_PAGE21, 0x232)
@@ -123,7 +128,7 @@ ELF_RELOC(R_AARCH64_TLSLE_LDST128_TPREL_LO12_NC, 0x23b)
ELF_RELOC(R_AARCH64_TLSLD_LDST128_DTPREL_LO12, 0x23c)
ELF_RELOC(R_AARCH64_TLSLD_LDST128_DTPREL_LO12_NC, 0x23d)
ELF_RELOC(R_AARCH64_AUTH_ABS64, 0x244)
-// Dynamic relocations start
+// Dynamic relocations
ELF_RELOC(R_AARCH64_COPY, 0x400)
ELF_RELOC(R_AARCH64_GLOB_DAT, 0x401)
ELF_RELOC(R_AARCH64_JUMP_SLOT, 0x402)
@@ -136,8 +141,11 @@ ELF_RELOC(R_AARCH64_TLS_DTPREL64, 0x405)
ELF_RELOC(R_AARCH64_TLS_TPREL64, 0x406)
ELF_RELOC(R_AARCH64_TLSDESC, 0x407)
ELF_RELOC(R_AARCH64_IRELATIVE, 0x408)
+// PAuthABI static relocations: Defined in pauthabielf64,
+// https://github.com/ARM-software/abi-aa
ELF_RELOC(R_AARCH64_AUTH_RELATIVE, 0x411)
+// ELF32
// ELF_RELOC(R_AARCH64_P32_NONE, 0)
ELF_RELOC(R_AARCH64_P32_ABS32, 0x001)
ELF_RELOC(R_AARCH64_P32_ABS16, 0x002)
@@ -216,7 +224,7 @@ ELF_RELOC(R_AARCH64_P32_TLSDESC_ADR_PAGE21, 0x07c)
ELF_RELOC(R_AARCH64_P32_TLSDESC_LD32_LO12, 0x07d)
ELF_RELOC(R_AARCH64_P32_TLSDESC_ADD_LO12, 0x07e)
ELF_RELOC(R_AARCH64_P32_TLSDESC_CALL, 0x07f)
-// Dynamic relocations start
+// Dynamic relocations
ELF_RELOC(R_AARCH64_P32_COPY, 0x0b4)
ELF_RELOC(R_AARCH64_P32_GLOB_DAT, 0x0b5)
ELF_RELOC(R_AARCH64_P32_JUMP_SLOT, 0x0b6)
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