forked from OSchip/llvm-project
61 lines
2.2 KiB
ArmAsm
61 lines
2.2 KiB
ArmAsm
# REQUIRES: x86
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## Test we resolve symbolic relocations in .debug_* sections to a tombstone
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## value if the referenced symbol is discarded (--gc-sections, non-prevailing
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## section group, SHF_EXCLUDE, /DISCARD/, etc).
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# RUN: echo '.globl _start; _start: call group' | llvm-mc -filetype=obj -triple=x86_64 - -o %t.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t1.o
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# RUN: ld.lld --gc-sections %t.o %t1.o %t1.o -o %t
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# RUN: llvm-objdump -s %t | FileCheck %s
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# CHECK: Contents of section .debug_loc:
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# CHECK-NEXT: 0000 feffffff ffffffff feffffff ffffffff
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# CHECK-NEXT: Contents of section .debug_ranges:
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# CHECK-NEXT: 0000 feffffff ffffffff feffffff ffffffff
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# CHECK-NEXT: Contents of section .debug_addr:
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# CHECK-NEXT: 0000 {{.*}}000 00000000 {{.*}}000 00000000
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# CHECK-NEXT: 0010 ffffffff ffffffff {{.*}}000 00000000
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# CHECK-NEXT: Contents of section .debug_foo:
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# CHECK-NEXT: 0000 ffffffff ffffffff 08000000 00000000
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# CHECK-NEXT: 0010 ffffffff ffffffff 08000000 00000000
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## -z dead-reloc-in-nonalloc= can override the tombstone value.
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# RUN: ld.lld --gc-sections -z dead-reloc-in-nonalloc=.debug_loc=42 %t.o %t1.o %t1.o -o %t42
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# RUN: llvm-objdump -s %t42 | FileCheck %s --check-prefix=OVERRIDE
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# OVERRIDE: Contents of section .debug_loc:
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# OVERRIDE-NEXT: 0000 2a000000 00000000 2a000000 00000000
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.section .text.1,"ax"
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.byte 0
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.section .text.2,"axe"
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.byte 0
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.section .text.3,"axG",@progbits,group,comdat
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.globl group
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group:
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.byte 0
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## Resolved to UINT64_C(-2), with the addend ignored.
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## UINT64_C(-1) is a reserved value (base address selection entry) which can't be used.
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.section .debug_loc
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.quad .text.1+8
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.section .debug_ranges
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.quad .text.2+16
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.section .debug_addr
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## .text.3 is a local symbol. The symbol defined in a non-prevailing group is
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## discarded. Resolved to UINT64_C(-1).
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.quad .text.3+24
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## group is a non-local symbol. The relocation from the second %t1.o gets
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## resolved to the prevailing copy.
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.quad group+32
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.section .debug_foo
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.quad .text.1+8
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## We only deal with DW_FORM_addr. Don't special case short-range absolute
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## relocations. Treat them like regular absolute relocations referencing
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## discarded symbols, which are resolved to the addend.
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.long .text.1+8
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.long 0
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