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2025-03-14debug/elf: add riscv attributes definitionsMeng Zhuo
This CL adds `riscv.attributes` related ELF section header type and program header type according to [RISC-V ELF Specification](https://github.com/riscv-non-isa/riscv-elf-psabi-doc/releases/download/v1.0/riscv-abi.pdf) Also an riscv64/linux testcase binary built from: ``` gcc -march=rv64g -no-pie -o gcc-riscv64-linux-exec hello.c strip gcc-riscv64-linux-exec ``` Fixes #72843 Change-Id: I7710a0516f69141c0efaba71dd997f05b4c88421 Reviewed-on: https://go-review.googlesource.com/c/go/+/657515 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-11-07debug/elf: add SHT_GNU_VERDEF section parsingbenbaker76
Fixes #63952 Change-Id: Icf93e57e62243d9c3306d4e1c5dadb3f62747710 GitHub-Last-Rev: 5c2952760063474f3aac338fe5bdb65bde238ab6 GitHub-Pull-Request: golang/go#69850 Reviewed-on: https://go-review.googlesource.com/c/go/+/619077 Reviewed-by: Ian Lance Taylor <iant@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: David Chase <drchase@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2020-08-31debug/elf: support relocations relative to sections with non-zero addressesVictor Michel
commit 72ec930fa70c20ce69b21bf32a7916c04c2e9c2f added basic support for relocations, but assumed that the symbol value would be 0, likely because .debug_info always has address == 0 in the ELF section headers. CL 195679 added further support for relocations, but explicitly encoded the original assumption that section addresses would be 0. This change removes that assumption: all relocations will now be properly computed based on the target symbol value even when that symbol is a section with a non-zero address. Typically, sections that are part of a LOAD program segment have non-zero addresses. For example, .debug_ranges relocations could be relative to .text, which usually has an address > 0. Fixes #40879 Change-Id: Ib0a616bb8b05d6c96d179b03ca33a10946fc5d59 GitHub-Last-Rev: 4200de732641995f3a4958a13a5c78f65b7eae50 GitHub-Pull-Request: golang/go#41038 Reviewed-on: https://go-review.googlesource.com/c/go/+/250559 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2018-04-18debug/elf: add riscv64 relocationsTobias Klauser
Based on the code from https://github.com/riscv/riscv-go/ originally written by Amol Bhave. Change-Id: I8d5377096d4ff8b198dadb630511f9a0347f9797 Reviewed-on: https://go-review.googlesource.com/107339 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-11-03debug/elf: add support for GOARCH=mips{,le}Vladimir Stefanovic
Change-Id: Ia6f8ae7e56a49ad66b60a24c4afb606f3cfe5efd Reviewed-on: https://go-review.googlesource.com/31482 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2016-10-11debug/elf: add sparc64 relocationsJames Clarke
Change-Id: I1a2504ad9ca8607588d2d366598115fe360435b5 Reviewed-on: https://go-review.googlesource.com/30870 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-03-29debug/elf: add s390x relocationsMichael Munday
Change-Id: I8440f69c7f99d65b2f69035c26b4a62104f22bd3 Reviewed-on: https://go-review.googlesource.com/20874 Reviewed-by: Minux Ma <minux@golang.org>
2016-03-25all: zero mtimes in testdata gz filesCaleb Spare
Fixes #14937. Change-Id: Iea11a32230d44d5a43f8aec812d25f13bce85895 Reviewed-on: https://go-review.googlesource.com/21038 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2015-12-03debug/elf: transparently decompress compressed sectionsAustin Clements
This adds support for compressed ELF sections. This compression is treated as a framing issue and hence the package APIs all transparently decompress compressed sections. This requires some subtlety for (*Section).Open, which returns an io.ReadSeeker: since the decompressed data comes from an io.Reader, this commit introduces a Reader-to-ReadSeeker adapter that is efficient for common uses of Seek and does what it can otherwise. Fixes #11773. Change-Id: Ic0cb7255a85cadf4c1d15fb563d5a2e89dbd3c36 Reviewed-on: https://go-review.googlesource.com/17341 Reviewed-by: Russ Cox <rsc@golang.org> Run-TryBot: Austin Clements <austin@google.com>
2015-12-03dwbug/elf: support old-style compressed DWARFAustin Clements
GCC and LLVM support zlib-compressing DWARF debug sections (and there's some evidence that this may be happening by default in some circumstances now). Add support for reading compressed DWARF sections. Since ELF relocations apply to the decompressed data, decompression is done before applying relocations. Since relcations are applied by debug/elf, decompression must also be handled there. Note that this is different from compressed ELF sections, which is a more general mechanism used by very recent versions of GCC. Updates #11773. Change-Id: I3f4bf1b04d0802cc1e8fcb7c2a5fcf6c467c5089 Reviewed-on: https://go-review.googlesource.com/17340 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
2015-11-12debug/elf: added MIPS ELF relocationsYao Zhang
Change-Id: I05352749a852095baae2f67fd71ffcf5f727538d Reviewed-on: https://go-review.googlesource.com/14453 Reviewed-by: Minux Ma <minux@golang.org>
2015-09-04all: remove executable bit from several filesAndrew Gerrand
Change-Id: Iab669b2a9dd0510c0e54f9ec1cbe2b83b991bceb Reviewed-on: https://go-review.googlesource.com/14283 Reviewed-by: Minux Ma <minux@golang.org>
2015-06-26debug/elf: change R_ARM_REL32 to R_ARM_ABS32 in applyRelocationsARMIan Lance Taylor
The original version of applyRelocationsARM was added in http://golang.org/cl/7266. It was added to fix the ARM build, which had been broken by http://golang.org/cl/6780. Before CL 6780, there was no relocation processing for ARM. CL 6780 changed the code to require relocation processing for every supported target. CL 7266 fixed the ARM build by adding a relocation processing function, but in fact no actual processing was done. The code only looked for REL32 relocations, but ARM debug info has no such relocations. The test case added in CL 7266 doesn't have any either. This didn't matter because no relocation processing was required on ARM, at least not for GCC-generated debug info. GCC generates ABS32 relocations, but only against section symbols which have the value 0. Therefore, the addition done by correct handling of ABS32 doesn't change anything. Clang, however, generates ABS32 relocations against local symbols, some of which have non-zero values. For those, we need to handle ABS32 relocations. This patch corrects the CL 7266 to look for ABS32 relocations instead of REL32 relocations. The code was already written to correctly handle ABS32 relocations, it just mistakenly said REL32. This is the ARM equivalent of https://golang.org/cl/96680045, which fixed the same problem in the same way for clang on 386. With this patch, clang-3.5 can be used to build Go on ARM GNU/Linux. Fixes #8980. Change-Id: I0c2d72eadfe6373bde99cd03eee40de6a582dda1 Reviewed-on: https://go-review.googlesource.com/11222 Reviewed-by: Russ Cox <rsc@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org>
2015-03-14debug/elf: support reading debug info from 32-bit PPC objectsIan Lance Taylor
Fixes #10118. Change-Id: I4a2e6748db609c6eed1d68c824b81c59bd7b875c Reviewed-on: https://go-review.googlesource.com/7590 Reviewed-by: Minux Ma <minux@golang.org>
2015-03-11debug/elf: fix arm buildDave Cheney
This change adds the minimum necessary to implement applyRelocations. For adg, this code uses the switch statement. Change-Id: I0989daab8d0e36c2a4f6a315ced258b832744616 Reviewed-on: https://go-review.googlesource.com/7266 Reviewed-by: Ian Lance Taylor <iant@golang.org>
2014-10-22build: merge the great pkg/ rename into dev.power64Austin Clements
This also removes pkg/runtime/traceback_lr.c, which was ported to Go in an earlier commit and then moved to runtime/traceback.go. Reviewer: rsc@golang.org rsc: LGTM
2014-09-08build: move package sources from src/pkg to srcRuss Cox
Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.
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