edf75e7992
Linker script doesn't create a section if it has no content. So the following
script doesn't create .norelocs section if it doesn't have any .rel* sections.
.norelocs : { *(.rel*) }
Later, if you assert that the size of .norelocs is 0, LLD printed out
an error message, because it didn't allow calling SIZEOF() on nonexistent
sections.
This patch allows SIZEOF() on nonexistent sections, so that you can do
something like this.
ASSERT(SIZEOF(.norelocs), "shouldn't contain .rel sections!")
Note that this behavior is compatible with GNU.
Differential Revision: https://reviews.llvm.org/D26810
llvm-svn: 287257
54 lines
1.5 KiB
ArmAsm
54 lines
1.5 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
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# RUN: echo "SECTIONS { \
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# RUN: .aaa : { *(.aaa) } \
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# RUN: .bbb : { *(.bbb) } \
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# RUN: .ccc : { *(.ccc) } \
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# RUN: _aaa = SIZEOF(.aaa); \
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# RUN: _bbb = SIZEOF(.bbb); \
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# RUN: _ccc = SIZEOF(.ccc); \
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# RUN: }" > %t.script
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# RUN: ld.lld -o %t1 --script %t.script %t
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# RUN: llvm-objdump -t -section-headers %t1 | FileCheck %s
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# CHECK: Sections:
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# CHECK-NEXT: Idx Name Size
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# CHECK-NEXT: 0 00000000
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# CHECK-NEXT: 1 .aaa 00000008
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# CHECK-NEXT: 2 .bbb 00000010
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# CHECK-NEXT: 3 .ccc 00000018
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# CHECK: SYMBOL TABLE:
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# CHECK-NEXT: 0000000000000000 *UND* 00000000
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# CHECK-NEXT: .text 00000000 _start
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# CHECK-NEXT: 0000000000000008 *ABS* 00000000 _aaa
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# CHECK-NEXT: 0000000000000010 *ABS* 00000000 _bbb
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# CHECK-NEXT: 0000000000000018 *ABS* 00000000 _ccc
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## SIZEOF(.nonexistent_section) should return 0.
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# RUN: echo "SECTIONS { \
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# RUN: .aaa : { *(.aaa) } \
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# RUN: .bbb : { *(.bbb) } \
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# RUN: .ccc : { *(.ccc) } \
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# RUN: _aaa = SIZEOF(.foo); \
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# RUN: }" > %t.script
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# RUN: ld.lld -o %t1 --script %t.script %t
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# RUN: llvm-objdump -t -section-headers %t1 | FileCheck -check-prefix=CHECK2 %s
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# CHECK2: 0000000000000000 *ABS* 00000000 _aaa
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.global _start
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_start:
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nop
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.section .aaa,"a"
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.quad 0
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.section .bbb,"a"
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.quad 0
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.quad 0
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.section .ccc,"a"
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.quad 0
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.quad 0
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.quad 0
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