60f1fe8438
Previously ASSERT we implemented returned expression value. Ex: . = ASSERT(0x100); would set Dot value to 0x100 Form of assert when it is assigned to Dot was implemented for compatibility with very old GNU ld which required it. Some scripts in the wild, including linux kernel scripts use such ASSERTs at the end for doing different checks. Currently we fail with "unable to move location counter backward" for such scripts. Patch changes ASSERT to return location counter value to fix that. Differential revision: https://reviews.llvm.org/D30171 llvm-svn: 295703
40 lines
1.5 KiB
ArmAsm
40 lines
1.5 KiB
ArmAsm
# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o
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# RUN: echo "SECTIONS { ASSERT(1, fail) }" > %t1.script
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# RUN: ld.lld -shared -o %t1 --script %t1.script %t1.o
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# RUN: llvm-readobj %t1 > /dev/null
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# RUN: echo "SECTIONS { ASSERT(0, fail) }" > %t3.script
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# RUN: not ld.lld -shared -o %t3 --script %t3.script %t1.o > %t.log 2>&1
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# RUN: FileCheck %s -check-prefix=FAIL < %t.log
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# FAIL: fail
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# RUN: echo "SECTIONS { . = ASSERT(0x1000, fail); }" > %t4.script
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# RUN: ld.lld -shared -o %t4 --script %t4.script %t1.o
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# RUN: llvm-readobj %t4 > /dev/null
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# RUN: echo "SECTIONS { .foo : { *(.foo) } }" > %t5.script
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# RUN: echo "ASSERT(SIZEOF(.foo) == 8, fail);" >> %t5.script
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# RUN: ld.lld -shared -o %t5 --script %t5.script %t1.o
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# RUN: llvm-readobj %t5 > /dev/null
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## Even without SECTIONS block we still use section names
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## in expressions
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# RUN: echo "ASSERT(SIZEOF(.foo) == 8, fail);" > %t5.script
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# RUN: ld.lld -shared -o %t5 --script %t5.script %t1.o
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# RUN: llvm-readobj %t5 > /dev/null
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## Test assertions inside of output section decriptions.
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# RUN: echo "SECTIONS { .foo : { *(.foo) ASSERT(SIZEOF(.foo) == 8, \"true\"); } }" > %t6.script
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# RUN: ld.lld -shared -o %t6 --script %t6.script %t1.o
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# RUN: llvm-readobj %t6 > /dev/null
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# RUN: echo "SECTIONS { .foo : { ASSERT(1, \"true\") } }" > %t7.script
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# RUN: not ld.lld -shared -o %t7 --script %t7.script %t1.o > %t.log 2>&1
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# RUN: FileCheck %s -check-prefix=CHECK-SEMI < %t.log
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# CHECK-SEMI: error: {{.*}}.script:1: ; expected, but got }
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.section .foo, "a"
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.quad 0
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