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GNU ld added --default-script (alias: -dT) in 2007. The option specifies a default script that is processed if --script/-T is not specified. -dT can be used to override GNU ld's internal linker script, but only when the application does not specify -T. In addition, dynamorio's CMakeLists.txt may use -dT. The implementation is simple and the feature can be useful to dabble with different section layouts. Pull Request: https://github.com/llvm/llvm-project/pull/89327
64 lines
1.7 KiB
ArmAsm
64 lines
1.7 KiB
ArmAsm
# REQUIRES: x86
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# RUN: rm -rf %t && split-file %s %t && cd %t
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# RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
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# RUN: ld.lld --default-script=def.t b.t -T a.t a.o -o out
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# RUN: llvm-readelf -Ss out | FileCheck %s
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# CHECK: Name
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# CHECK: .foo2
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# CHECK-NEXT: .foo0
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# CHECK-NEXT: .foo1
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# CHECK: 1: 000000000000000c 0 NOTYPE GLOBAL DEFAULT 4 _start
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# CHECK-NEXT: 2: 000000000000002a 0 NOTYPE GLOBAL DEFAULT ABS b
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# CHECK-NEXT: 3: 000000000000002a 0 NOTYPE GLOBAL DEFAULT ABS a
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# CHECK-EMPTY:
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## In the absence of --script options, the default linker script is read.
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# RUN: ld.lld --default-script def.t b.t a.o -o out1
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# RUN: llvm-readelf -Ss out1 | FileCheck %s --check-prefix=CHECK1
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# RUN: ld.lld -dT def.t b.t a.o -o out1a && cmp out1 out1a
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## If multiple -dT options are specified, the last -dT wins.
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# RUN: ld.lld -dT a.t -dT def.t b.t a.o -o out1a && cmp out1 out1a
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# RUN: mkdir d && cp def.t d/default.t
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# RUN: ld.lld -L d -dT default.t b.t a.o -o out1a && cmp out1 out1a
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# CHECK1: Name
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# CHECK1: .foo2
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# CHECK1-NEXT: .foo1
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# CHECK1-NEXT: .foo0
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# CHECK1: 1: 000000000000000c 0 NOTYPE GLOBAL DEFAULT 4 _start
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# CHECK1-NEXT: 2: 000000000000002a 0 NOTYPE GLOBAL DEFAULT ABS b
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# CHECK1-NEXT: 3: 000000000000002a 0 NOTYPE GLOBAL DEFAULT ABS def
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# CHECK1-EMPTY:
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# RUN: not ld.lld --default-script not-exist.t b.t -T a.t a.o 2>&1 | FileCheck %s --check-prefix=ERR
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# ERR: error: cannot find linker script not-exist.t
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#--- a.s
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.globl _start
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_start:
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.section .foo0,"a"; .long 0
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.section .foo1,"a"; .long 0
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.section .foo2,"a"; .long 0
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#--- a.t
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a = 42;
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SECTIONS {
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.foo2 : {}
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.foo0 : {}
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.foo1 : {}
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}
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#--- b.t
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b = 42;
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#--- def.t
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def = 42;
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SECTIONS {
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.foo2 : {}
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.foo1 : {}
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.foo0 : {}
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}
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