derek.holloway
7502bf64a4
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51 lines
1.7 KiB
ArmAsm
51 lines
1.7 KiB
ArmAsm
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# REQUIRES: hexagon
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# RUN: llvm-mc -filetype=obj -triple=hexagon-unknown-elf %s -o %t.o
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# RUN: ld.lld -shared %t.o -o %t.so
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# RUN: llvm-readobj -r %t.so | FileCheck --check-prefix=RELOC %s
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# RUN: llvm-readobj -r %t.o | FileCheck --check-prefix=REL %s
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# RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex %t.so | FileCheck %s
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## Prior to D77021 lld would error "relocation R_HEX_GD_PLT_B22_PCREL cannot refer to absolute symbol".
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## A PC-relative relocation referencing a non-preemptible absolute symbol (due to STT_TLS) is not representable in -pie/-shared mode.
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## For this case we will actually patch the symbol to the external __tls_get_addr which is preemptible.
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.globl _start
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.type _start, @function
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# RELOC: Section ({{.*}}) .rela.plt {
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# RELOC-NEXT: R_HEX_JMP_SLOT __tls_get_addr 0x0
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# RELOC-NEXT: }
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# REL: R_HEX_B32_PCREL_X _GLOBAL_OFFSET_TABLE_ 0x0
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# REL-NEXT: R_HEX_6_PCREL_X _GLOBAL_OFFSET_TABLE_ 0x4
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# REL-NEXT: R_HEX_GD_GOT_32_6_X a 0x0
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# REL-NEXT: R_HEX_GD_GOT_16_X a 0x0
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# REL-NEXT: R_HEX_GD_PLT_B22_PCREL a 0x0
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# REL-NEXT: R_HEX_GD_PLT_B32_PCREL_X a 0x0
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# REL-NEXT: R_HEX_GD_PLT_B22_PCREL_X a 0x4
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# CHECK: { immext(#{{.*}})
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# CHECK-NEXT: r2 = add(pc,##{{.*}}) }
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# CHECK-NEXT: { immext(#{{.*}})
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# CHECK-NEXT: r0 = add(r2,##-{{.*}}) }
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# CHECK-NEXT: { call {{.*}} }
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# CHECK-NEXT: { immext({{.*}})
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# CHECK-NEXT: call {{.*}} }
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# CHECK-NEXT: { r0 = memw(r0+#0x0) }
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_start:
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r2 = add(pc,##_GLOBAL_OFFSET_TABLE_@PCREL)
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r0 = add(r2,##a@GDGOT)
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call a@GDPLT
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call ##a@GDPLT
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r0 = memw(r0+#0)
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## a is non-preemptible due to STV_HIDDEN visibility.
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## We can achieve the same effect with -Bsymbolic.
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.section .tdata,"awT",@progbits
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.globl a
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.hidden a
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a:
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.word 1
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