derek.holloway
7502bf64a4
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83 lines
2.4 KiB
ArmAsm
83 lines
2.4 KiB
ArmAsm
// REQUIRES: x86
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/// For non-preemptable ifunc, place ifunc PLT entries after regular PLT entries.
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// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
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// RUN: ld.lld --shared -o %t.so %t.o
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// RUN: llvm-objdump --no-print-imm-hex -d --no-show-raw-insn %t.so | FileCheck %s --check-prefix=DISASM
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// RUN: llvm-readobj -r %t.so | FileCheck %s
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// Check that an IRELATIVE relocation is used for a non-preemptible ifunc
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// handler and a JUMP_SLOT is used for a preemptible ifunc
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// DISASM: Disassembly of section .text:
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// DISASM-EMPTY:
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// DISASM-NEXT: <fct>:
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// DISASM-NEXT: 1308: retq
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// DISASM: <fct2>:
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// DISASM-NEXT: 1309: retq
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// DISASM: <f1>:
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// DISASM-NEXT: 130a: callq 0x1350
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// DISASM-NEXT: 130f: callq 0x1330
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// DISASM-NEXT: 1314: callq 0x1340
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// DISASM-NEXT: 1319: retq
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// DISASM: <f2>:
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// DISASM-NEXT: 131a: retq
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// DISASM-EMPTY:
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// DISASM-NEXT: Disassembly of section .plt:
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// DISASM-EMPTY:
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// DISASM-NEXT: <.plt>:
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// DISASM-NEXT: 1320: pushq 8482(%rip)
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// DISASM-NEXT: 1326: jmpq *8484(%rip)
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// DISASM-NEXT: 132c: nopl (%rax)
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// DISASM-EMPTY:
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// DISASM-NEXT: <fct2@plt>:
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// DISASM-NEXT: 1330: jmpq *8482(%rip)
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// DISASM-NEXT: 1336: pushq $0
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// DISASM-NEXT: 133b: jmp 0x1320 <.plt>
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// DISASM-EMPTY:
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// DISASM-NEXT: <f2@plt>:
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// DISASM-NEXT: 1340: jmpq *8474(%rip)
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// DISASM-NEXT: 1346: pushq $1
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// DISASM-NEXT: 134b: jmp 0x1320 <.plt>
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// DISASM: Disassembly of section .iplt:
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// DISASM-EMPTY:
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// DISASM: <.iplt>:
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// DISASM-NEXT: 1350: jmpq *8466(%rip)
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// DISASM-NEXT: 1356: pushq $0
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// DISASM-NEXT: 135b: jmp 0x1320 <.plt>
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// CHECK: Relocations [
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// CHECK-NEXT: Section (5) .rela.dyn {
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// CHECK-NEXT: 0x3468 R_X86_64_IRELATIVE - 0x1308
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// CHECK-NEXT: }
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// CHECK-NEXT: Section (6) .rela.plt {
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// CHECK-NEXT: 0x3458 R_X86_64_JUMP_SLOT fct2 0x0
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// CHECK-NEXT: 0x3460 R_X86_64_JUMP_SLOT f2 0x0
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// CHECK-NEXT: }
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// Hidden expect IRELATIVE
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.globl fct
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.hidden fct
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.type fct, STT_GNU_IFUNC
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fct:
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ret
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// Not hidden expect JUMP_SLOT
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.globl fct2
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.type fct2, STT_GNU_IFUNC
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fct2:
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ret
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.globl f1
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.type f1, @function
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f1:
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call fct
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call fct2
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call f2@PLT
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ret
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.globl f2
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.type f2, @function
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f2:
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ret
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