derek.holloway
7502bf64a4
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75 lines
1.9 KiB
ArmAsm
75 lines
1.9 KiB
ArmAsm
# REQUIRES: aarch64
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## Prior to Android V, there was a bug that caused RELR relocations to be
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## applied after packed relocations. This meant that resolvers referenced by
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## IRELATIVE relocations in the packed relocation section would read unrelocated
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## globals when --pack-relative-relocs=android+relr is enabled. Work around this
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## by placing IRELATIVE in .rela.plt.
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# RUN: rm -rf %t && split-file %s %t && cd %t
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# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-android a.s -o a.o
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# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-android b.s -o b.o
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# RUN: ld.lld -shared b.o -o b.so
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# RUN: ld.lld -pie --pack-dyn-relocs=android+relr -z separate-loadable-segments a.o b.so -o a
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# RUN: llvm-readobj -r a | FileCheck %s
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# RUN: llvm-objdump -d a | FileCheck %s --check-prefix=ASM
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# CHECK: .relr.dyn {
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# CHECK-NEXT: 0x30000 R_AARCH64_RELATIVE -
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# CHECK-NEXT: }
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# CHECK: .rela.plt {
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# CHECK-NEXT: 0x30020 R_AARCH64_JUMP_SLOT bar 0x0
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# CHECK-NEXT: 0x30028 R_AARCH64_IRELATIVE - 0x10000
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# CHECK-NEXT: }
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# ASM: <.iplt>:
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# ASM-NEXT: adrp x16, 0x30000
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# ASM-NEXT: ldr x17, [x16, #0x28]
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# ASM-NEXT: add x16, x16, #0x28
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# ASM-NEXT: br x17
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#--- a.s
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.text
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.type foo, %gnu_indirect_function
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.globl foo
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foo:
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ret
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.globl _start
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_start:
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bl foo
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bl bar
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.data
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.balign 8
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.quad .data
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#--- b.s
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.globl bar
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bar:
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ret
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#--- c.s
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# RUN: llvm-mc -filetype=obj -triple=aarch64-linux-android c.s -o c.o
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# RUN: ld.lld --pack-dyn-relocs=android c.o -o c
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# RUN: llvm-readelf -sS c | FileCheck --check-prefix=STATIC %s
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# STATIC: .rela.plt RELA 0000000000200158 000158 000018 18 AI 0 5 8
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# STATIC: 0000000000200158 0 NOTYPE LOCAL HIDDEN 1 __rela_iplt_start
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# STATIC: 0000000000200170 0 NOTYPE LOCAL HIDDEN 1 __rela_iplt_end
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.text
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.type foo, %gnu_indirect_function
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.globl foo
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foo:
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ret
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.globl _start
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_start:
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bl foo
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.data
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.balign 8
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.quad __rela_iplt_start
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.quad __rela_iplt_end
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