forked from OSchip/llvm-project
112 lines
4.1 KiB
ArmAsm
112 lines
4.1 KiB
ArmAsm
// REQUIRES: x86
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/// For non-preemptable ifunc, place ifunc PLT entries to the .iplt section.
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// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %S/Inputs/shared2-x86-64.s -o %t1.o
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// RUN: ld.lld %t1.o --shared -soname=so -o %t.so
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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 --hash-style=sysv %t.so %t.o -o %tout
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// RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex %tout | FileCheck %s --check-prefix=DISASM
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// RUN: llvm-objdump -s %tout | FileCheck %s --check-prefix=GOTPLT
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// RUN: llvm-readobj -r --dynamic-table %tout | FileCheck %s
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/// Check that the PLTRELSZ tag does not include the IRELATIVE relocations
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// CHECK: DynamicSection [
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// CHECK: 0x0000000000000008 RELASZ 72 (bytes)
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// CHECK: 0x0000000000000002 PLTRELSZ 48 (bytes)
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/// Check that the IRELATIVE relocations are placed to the .rela.dyn section after
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/// other regular relocations (e.g. GLOB_DAT).
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// CHECK: Relocations [
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// CHECK-NEXT: Section (4) .rela.dyn {
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// CHECK-NEXT: 0x202480 R_X86_64_GLOB_DAT bar3 0x0
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// CHECK-NEXT: 0x2034B0 R_X86_64_IRELATIVE - 0x201318
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// CHECK-NEXT: 0x2034B8 R_X86_64_IRELATIVE - 0x201319
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// CHECK-NEXT: }
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// CHECK-NEXT: Section (5) .rela.plt {
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// CHECK-NEXT: 0x2034A0 R_X86_64_JUMP_SLOT bar2 0x0
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// CHECK-NEXT: 0x2034A8 R_X86_64_JUMP_SLOT zed2 0x0
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// CHECK-NEXT: }
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/// Check that .got.plt entries point back to PLT header
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// GOTPLT: Contents of section .got.plt:
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// GOTPLT-NEXT: 203488 90232000 00000000 00000000 00000000
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// GOTPLT-NEXT: 203498 00000000 00000000 56132000 00000000
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// GOTPLT-NEXT: 2034a8 66132000 00000000 00000000 00000000
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// GOTPLT-NEXT: 2034b8 00000000 00000000
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/// Check that we have 2 PLT sections: one regular .plt section and one
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/// .iplt section for ifunc entries.
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// DISASM: Disassembly of section .text:
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// DISASM-EMPTY:
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// DISASM-NEXT: <foo>:
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// DISASM-NEXT: 201318: retq
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// DISASM: <bar>:
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// DISASM-NEXT: 201319: retq
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// DISASM: <_start>:
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// DISASM-NEXT: 20131a: callq 0x201370
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// DISASM-NEXT: 20131f: callq 0x201380
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// DISASM-NEXT: callq {{.*}} <bar2@plt>
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// DISASM-NEXT: callq {{.*}} <zed2@plt>
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// DISASM-NEXT: jmpq *0x114c(%rip)
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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: 201340: pushq 0x214a(%rip)
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// DISASM-NEXT: 201346: jmpq *0x214c(%rip)
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// DISASM-NEXT: 20134c: nopl (%rax)
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// DISASM-EMPTY:
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// DISASM-NEXT: <bar2@plt>:
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// DISASM-NEXT: 201350: jmpq *0x214a(%rip)
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// DISASM-NEXT: 201356: pushq $0x0
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// DISASM-NEXT: 20135b: jmp 0x201340 <.plt>
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// DISASM-EMPTY:
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// DISASM-NEXT: <zed2@plt>:
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// DISASM-NEXT: 201360: jmpq *0x2142(%rip)
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// DISASM-NEXT: 201366: pushq $0x1
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// DISASM-NEXT: 20136b: jmp 0x201340 <.plt>
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// DISASM-EMPTY:
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// DISASM-NEXT: Disassembly of section .iplt:
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// DISASM-EMPTY:
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// DISASM-NEXT: <.iplt>:
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// DISASM-NEXT: 201370: jmpq *0x213a(%rip)
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// DISASM-NEXT: 201376: pushq $0x0
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// DISASM-NEXT: 20137b: jmp 0x201340 <.plt>
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// DISASM-NEXT: 201380: jmpq *0x2132(%rip)
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// DISASM-NEXT: 201386: pushq $0x1
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// DISASM-NEXT: 20138b: jmp 0x201340 <.plt>
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// Test that --shuffle-sections does not affect the order of relocations and that
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// we still place IRELATIVE relocations last. Check both random seed (0) and an
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// arbitrary seed that was known to break the order of relocations previously (3).
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// RUN: ld.lld --shuffle-sections=3 %t.so %t.o -o %tout2
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// RUN: llvm-readobj --relocations %tout2 | FileCheck %s --check-prefix=SHUFFLE
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// RUN: ld.lld --shuffle-sections=0 %t.so %t.o -o %tout3
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// RUN: llvm-readobj --relocations %tout3 | FileCheck %s --check-prefix=SHUFFLE
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// SHUFFLE: Section {{.*}} .rela.dyn {
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// SHUFFLE-NEXT: R_X86_64_GLOB_DAT
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// SHUFFLE-NEXT: R_X86_64_IRELATIVE
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// SHUFFLE-NEXT: R_X86_64_IRELATIVE
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// SHUFFLE-NEXT: }
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.text
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.type foo STT_GNU_IFUNC
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.globl foo
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foo:
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ret
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.type bar STT_GNU_IFUNC
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.globl bar
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bar:
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ret
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.globl _start
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_start:
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call foo
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call bar
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call bar2
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call zed2
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jmp *bar3@GOTPCREL(%rip)
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