5cd9c6bcd8
Patch by PkmX. This patch makes lld recognize RISC-V target and implements basic relocation for RV32/RV64 (and RVC). This should be necessary for static linking ELF applications. The ABI documentation for RISC-V can be found at: https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md. Note that the documentation is far from complete so we had to figure out some details from bfd. The patch should be pretty straightforward. Some highlights: - A new relocation Expr R_RISCV_PC_INDIRECT is added. This is needed as the low part of a PC-relative relocation is linked to the corresponding high part (auipc), see: https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md#pc-relative-symbol-addresses - LLVM's MC support for RISC-V is very incomplete (we are working on this), so tests are given in objectyaml format with the original assembly included in the comments. Once we have complete support for RISC-V in MC, we can switch to llvm-as/llvm-objdump. - We don't support linker relaxation for now as it requires greater changes to lld that is beyond the scope of this patch. Once this is accepted we can start to work on adding relaxation to lld. Differential Revision: https://reviews.llvm.org/D39322 llvm-svn: 339364
101 lines
3.3 KiB
Python
101 lines
3.3 KiB
Python
# -*- Python -*-
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import os
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import platform
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import re
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import subprocess
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import locale
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import lit.formats
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import lit.util
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from lit.llvm import llvm_config
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# Configuration file for the 'lit' test runner.
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# name: The name of this test suite.
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config.name = 'lld'
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# testFormat: The test format to use to interpret tests.
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#
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# For now we require '&&' between commands, until they get globally killed and
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# the test runner updated.
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config.test_format = lit.formats.ShTest(not llvm_config.use_lit_shell)
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# suffixes: A list of file extensions to treat as test files.
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config.suffixes = ['.ll', '.s', '.test', '.yaml', '.objtxt']
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# excludes: A list of directories to exclude from the testsuite. The 'Inputs'
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# subdirectories contain auxiliary inputs for various tests in their parent
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# directories.
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config.excludes = ['Inputs']
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# test_source_root: The root path where tests are located.
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config.test_source_root = os.path.dirname(__file__)
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config.test_exec_root = os.path.join(config.lld_obj_root, 'test')
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llvm_config.use_default_substitutions()
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llvm_config.use_lld()
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tool_patterns = [
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'llc', 'llvm-as', 'llvm-mc', 'llvm-nm', 'llvm-objdump', 'llvm-pdbutil',
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'llvm-dwarfdump', 'llvm-readelf', 'llvm-readobj', 'obj2yaml', 'yaml2obj',
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'opt', 'llvm-dis']
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llvm_config.add_tool_substitutions(tool_patterns)
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# When running under valgrind, we mangle '-vg' onto the end of the triple so we
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# can check it with XFAIL and XTARGET.
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if lit_config.useValgrind:
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config.target_triple += '-vg'
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# Running on ELF based *nix
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if platform.system() in ['FreeBSD', 'Linux']:
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config.available_features.add('system-linker-elf')
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# Set if host-cxxabi's demangler can handle target's symbols.
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if platform.system() not in ['Windows']:
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config.available_features.add('demangler')
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llvm_config.feature_config(
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[('--build-mode', {'DEBUG': 'debug'}),
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('--assertion-mode', {'ON': 'asserts'}),
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('--targets-built', {'AArch64': 'aarch64',
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'AMDGPU': 'amdgpu',
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'ARM': 'arm',
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'AVR': 'avr',
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'Hexagon': 'hexagon',
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'Mips': 'mips',
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'PowerPC': 'ppc',
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'RISCV': 'riscv',
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'Sparc': 'sparc',
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'WebAssembly': 'wasm',
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'X86': 'x86'})
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])
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# Set a fake constant version so that we get consistent output.
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config.environment['LLD_VERSION'] = 'LLD 1.0'
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config.environment['LLD_IN_TEST'] = '1'
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# Indirectly check if the mt.exe Microsoft utility exists by searching for
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# cvtres, which always accompanies it. Alternatively, check if we can use
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# libxml2 to merge manifests.
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if (lit.util.which('cvtres', config.environment['PATH'])) or \
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(config.llvm_libxml2_enabled == '1'):
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config.available_features.add('manifest_tool')
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if (config.llvm_libxml2_enabled == '1'):
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config.available_features.add('libxml2')
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if config.have_dia_sdk:
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config.available_features.add("diasdk")
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tar_executable = lit.util.which('tar', config.environment['PATH'])
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if tar_executable:
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tar_version = subprocess.Popen(
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[tar_executable, '--version'], stdout=subprocess.PIPE, env={'LANG': 'C'})
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if 'GNU tar' in tar_version.stdout.read().decode():
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config.available_features.add('gnutar')
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tar_version.wait()
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