317c339f61
Currently lld will implicitly reserve space for the headers. This is not the case is bfd, where it is the script responsibility to use SIZEOF_HEADERS. This means that a script not using SIZEOF_HEADERS and expecting the address of the first section to be 0 would fail with lld. I am fixing that is the next commit. This one just makes the tests explicitly use SIZEOF_HEADERS to avoid the dependency on the current behaviour. llvm-svn: 282814
70 lines
2.5 KiB
ArmAsm
70 lines
2.5 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
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# This test demonstrates an odd consequence of the way we handle sections with just symbol
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# assignments.
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# First, run a test with no such section.
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# RUN: echo "SECTIONS { \
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# RUN: . = SIZEOF_HEADERS; \
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# RUN: .dynsym : { } \
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# RUN: .hash : { } \
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# RUN: .dynstr : { } \
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# RUN: .text : { *(.text) } \
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# RUN: . = ALIGN(0x1000); \
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# RUN: .data.rel.ro : { *(.data.rel.ro) } \
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# RUN: }" > %t.script
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# RUN: ld.lld -o %t1 --script %t.script %t.o -shared
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# RUN: llvm-readobj --elf-output-style=GNU -l -s %t1 | FileCheck --check-prefix=CHECK1 %s
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# CHECK1: .text PROGBITS 00000000000001bc 0001bc 000001 00 AX
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# CHECK1-NEXT: .data.rel.ro PROGBITS 0000000000001000 001000 000001 00 WA
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# CHECK1: LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x0001bd 0x0001bd R E
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# CHECK1-NEXT: LOAD 0x001000 0x0000000000001000 0x0000000000001000 0x000068 0x000068 RW
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# Then add the section bar. Note how bar is given AX flags, which causes the PT_LOAD to now
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# cover the padding bits created by ALIGN.
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# RUN: echo "SECTIONS { \
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# RUN: . = SIZEOF_HEADERS; \
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# RUN: .dynsym : { } \
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# RUN: .hash : { } \
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# RUN: .dynstr : { } \
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# RUN: .text : { *(.text) } \
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# RUN: . = ALIGN(0x1000); \
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# RUN: bar : { HIDDEN(bar_sym = .); } \
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# RUN: .data.rel.ro : { *(.data.rel.ro) } \
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# RUN: }" > %t.script
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# RUN: ld.lld -o %t2 --script %t.script %t.o -shared
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# RUN: llvm-readobj --elf-output-style=GNU -l -s %t2 | FileCheck --check-prefix=CHECK2 %s
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# CHECK2: .text PROGBITS 00000000000001bc 0001bc 000001 00 AX
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# CHECK2-NEXT: bar PROGBITS 0000000000001000 001000 000000 00 AX
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# CHECK2-NEXT: .data.rel.ro PROGBITS 0000000000001000 001000 000001 00 WA
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# CHECK2: LOAD 0x000000 0x0000000000000000 0x0000000000000000 0x001000 0x001000 R E
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# CHECK2-NEXT: LOAD 0x001000 0x0000000000001000 0x0000000000001000 0x000068 0x000068 RW
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# If the current behavior becomes a problem we should consider just moving the commands out
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# of the section. That is, handle the above like the following test.
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# RUN: echo "SECTIONS { \
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# RUN: . = SIZEOF_HEADERS; \
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# RUN: .dynsym : { } \
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# RUN: .hash : { } \
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# RUN: .dynstr : { } \
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# RUN: .text : { *(.text) } \
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# RUN: . = ALIGN(0x1000); \
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# RUN: HIDDEN(bar_sym = .); \
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# RUN: .data.rel.ro : { *(.data.rel.ro) } \
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# RUN: }" > %t.script
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# RUN: ld.lld -o %t3 --script %t.script %t.o -shared
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# RUN: llvm-readobj --elf-output-style=GNU -l -s %t3 | FileCheck --check-prefix=CHECK1 %s
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nop
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.section .data.rel.ro, "aw"
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.byte 0
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