347fb02093
This patch does *not* implement any semantic actions, but it is a first step to teach LLD how to read complete linker scripts. The additional linker scripts statements whose parsing is now supported are: * SEARCH_DIR directive * SECTIONS directive * Symbol definitions inside SECTIONS including PROVIDE and PROVIDE_HIDDEN * C-like expressions used in many places in linker scripts * Input to output sections mapping The goal of this commit was guided towards completely parsing a default GNU ld linker script and the linker script used to link the FreeBSD kernel. Thus, it also adds a test case based on the default linker script used in GNU ld for x86_64 ELF targets. I tested SPEC userland programs linked by GNU ld, using the linker script dump'ed by this parser, and everything went fine. I then tested linking the FreeBSD kernel with a dump'ed linker script, installed the new kernel and booted it, everything went fine. Directives that still need to be implemented: * MEMORY * PHDRS Reviewers: silvas, shankarke and ruiu http://reviews.llvm.org/D5852 llvm-svn: 221126
42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
/* RUN: linker-script-test %s | FileCheck %s
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*/
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OUTPUT_ARCH(i386:x86_64)
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OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
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GROUP ( /lib/x86_64-linux-gnu/libc.so.6 /usr/lib/x86_64-linux-gnu/libc_nonshared.a AS_NEEDED ( /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 ) -lm -l:libgcc.a )
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ENTRY(init)
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/*
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CHECK: kw_output_arch: OUTPUT_ARCH
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CHECK: l_paren: (
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CHECK: identifier: i386:x86_64
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CHECK: r_paren: )
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CHECK: kw_output_format: OUTPUT_FORMAT
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CHECK: l_paren: (
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CHECK: identifier: elf64-x86-64
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CHECK: comma: ,
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CHECK: identifier: elf64-x86-64
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CHECK: comma: ,
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CHECK: identifier: elf64-x86-64
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CHECK: r_paren: )
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CHECK: kw_group: GROUP
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CHECK: l_paren: (
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CHECK: identifier: /lib/x86_64-linux-gnu/libc.so.6
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CHECK: identifier: /usr/lib/x86_64-linux-gnu/libc_nonshared.a
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CHECK: kw_as_needed: AS_NEEDED
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CHECK: l_paren: (
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CHECK: identifier: /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
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CHECK: r_paren: )
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CHECK: libname: m
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CHECK: libname: :libgcc.a
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CHECK: r_paren: )
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CHECK: kw_entry: ENTRY
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CHECK: l_paren: (
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CHECK: identifier: init
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CHECK: r_paren: )
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CHECK: eof:
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CHECK: OUTPUT_FORMAT("elf64-x86-64","elf64-x86-64","elf64-x86-64")
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CHECK: GROUP(/lib/x86_64-linux-gnu/libc.so.6 /usr/lib/x86_64-linux-gnu/libc_nonshared.a AS_NEEDED(/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) -lm -l:libgcc.a)
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CHECK: ENTRY(init)
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*/
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