mirror of
https://github.com/intel/llvm.git
synced 2026-01-25 19:44:38 +08:00
97cbe3e39c
Before this patch sections that go after relro sequence were placed at the same memory page with relro ones. It caused segmentation fault on freebsd. Fixes PR25790. Patch by George Rimar with some tweaks by myself. llvm-svn: 256334
120 lines
4.0 KiB
ArmAsm
120 lines
4.0 KiB
ArmAsm
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
|
|
// RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/shared.s -o %t2.o
|
|
// RUN: ld.lld -shared %t2.o -o %t2.so
|
|
// RUN: ld.lld -shared %t.o %t2.so -o %t
|
|
// RUN: ld.lld %t.o %t2.so -o %t3
|
|
// RUN: llvm-readobj -s -r %t | FileCheck %s
|
|
// RUN: llvm-objdump -d %t | FileCheck --check-prefix=DISASM %s
|
|
// RUN: llvm-readobj -s -r %t3 | FileCheck --check-prefix=CHECK2 %s
|
|
// RUN: llvm-objdump -d %t3 | FileCheck --check-prefix=DISASM2 %s
|
|
|
|
// REQUIRES: x86
|
|
|
|
// CHECK: Name: .plt
|
|
// CHECK-NEXT: Type: SHT_PROGBITS
|
|
// CHECK-NEXT: Flags [
|
|
// CHECK-NEXT: SHF_ALLOC
|
|
// CHECK-NEXT: SHF_EXECINSTR
|
|
// CHECK-NEXT: ]
|
|
// CHECK-NEXT: Address: 0x1020
|
|
// CHECK-NEXT: Offset:
|
|
// CHECK-NEXT: Size: 64
|
|
// CHECK-NEXT: Link: 0
|
|
// CHECK-NEXT: Info: 0
|
|
// CHECK-NEXT: AddressAlignment: 16
|
|
|
|
// CHECK: Relocations [
|
|
// CHECK-NEXT: Section ({{.*}}) .rela.plt {
|
|
// CHECK-NEXT: 0x3018 R_X86_64_JUMP_SLOT bar 0x0
|
|
// CHECK-NEXT: 0x3020 R_X86_64_JUMP_SLOT zed 0x0
|
|
// CHECK-NEXT: 0x3028 R_X86_64_JUMP_SLOT _start 0x0
|
|
// CHECK-NEXT: }
|
|
// CHECK-NEXT: ]
|
|
|
|
// CHECK2: Name: .plt
|
|
// CHECK2-NEXT: Type: SHT_PROGBITS
|
|
// CHECK2-NEXT: Flags [
|
|
// CHECK2-NEXT: SHF_ALLOC
|
|
// CHECK2-NEXT: SHF_EXECINSTR
|
|
// CHECK2-NEXT: ]
|
|
// CHECK2-NEXT: Address: 0x11020
|
|
// CHECK2-NEXT: Offset:
|
|
// CHECK2-NEXT: Size: 48
|
|
// CHECK2-NEXT: Link: 0
|
|
// CHECK2-NEXT: Info: 0
|
|
// CHECK2-NEXT: AddressAlignment: 16
|
|
|
|
// CHECK2: Relocations [
|
|
// CHECK2-NEXT: Section ({{.*}}) .rela.plt {
|
|
// CHECK2-NEXT: 0x13018 R_X86_64_JUMP_SLOT bar 0x0
|
|
// CHECK2-NEXT: 0x13020 R_X86_64_JUMP_SLOT zed 0x0
|
|
// CHECK2-NEXT: }
|
|
// CHECK2-NEXT: ]
|
|
|
|
// Unfortunately FileCheck can't do math, so we have to check for explicit
|
|
// values:
|
|
|
|
// 0x1030 - (0x1000 + 5) = 43
|
|
// 0x1030 - (0x1005 + 5) = 38
|
|
// 0x1040 - (0x100a + 5) = 49
|
|
// 0x1048 - (0x100a + 5) = 60
|
|
|
|
// DISASM: _start:
|
|
// DISASM-NEXT: 1000: e9 {{.*}} jmp 43
|
|
// DISASM-NEXT: 1005: e9 {{.*}} jmp 38
|
|
// DISASM-NEXT: 100a: e9 {{.*}} jmp 49
|
|
// DISASM-NEXT: 100f: e9 {{.*}} jmp 60
|
|
|
|
// 0x3018 - 0x1036 = 8162
|
|
// 0x3020 - 0x1046 = 4234
|
|
// 0x3028 - 0x1056 = 4226
|
|
|
|
// DISASM: Disassembly of section .plt:
|
|
// DISASM-NEXT: .plt:
|
|
// DISASM-NEXT: 1020: ff 35 e2 1f 00 00 pushq 8162(%rip)
|
|
// DISASM-NEXT: 1026: ff 25 e4 1f 00 00 jmpq *8164(%rip)
|
|
// DISASM-NEXT: 102c: 0f 1f 40 00 nopl (%rax)
|
|
// DISASM-NEXT: 1030: ff 25 e2 1f 00 00 jmpq *8162(%rip)
|
|
// DISASM-NEXT: 1036: 68 00 00 00 00 pushq $0
|
|
// DISASM-NEXT: 103b: e9 e0 ff ff ff jmp -32 <.plt>
|
|
// DISASM-NEXT: 1040: ff 25 da 1f 00 00 jmpq *8154(%rip)
|
|
// DISASM-NEXT: 1046: 68 01 00 00 00 pushq $1
|
|
// DISASM-NEXT: 104b: e9 d0 ff ff ff jmp -48 <.plt>
|
|
// DISASM-NEXT: 1050: ff 25 d2 1f 00 00 jmpq *8146(%rip)
|
|
// DISASM-NEXT: 1056: 68 02 00 00 00 pushq $2
|
|
// DISASM-NEXT: 105b: e9 c0 ff ff ff jmp -64 <.plt>
|
|
|
|
// 0x11030 - (0x11000 + 1) - 4 = 43
|
|
// 0x11030 - (0x11005 + 1) - 4 = 38
|
|
// 0x11040 - (0x1100a + 1) - 4 = 49
|
|
// 0x11000 - (0x1100f + 1) - 4 = -20
|
|
|
|
// DISASM2: _start:
|
|
// DISASM2-NEXT: 11000: e9 {{.*}} jmp 43
|
|
// DISASM2-NEXT: 11005: e9 {{.*}} jmp 38
|
|
// DISASM2-NEXT: 1100a: e9 {{.*}} jmp 49
|
|
// DISASM2-NEXT: 1100f: e9 {{.*}} jmp -20
|
|
|
|
// 0x13018 - 0x11036 = 4242
|
|
// 0x13020 - 0x11046 = 4234
|
|
|
|
// DISASM2: Disassembly of section .plt:
|
|
// DISASM2-NEXT: .plt:
|
|
// DISASM2-NEXT: 11020: ff 35 e2 1f 00 00 pushq 8162(%rip)
|
|
// DISASM2-NEXT: 11026: ff 25 e4 1f 00 00 jmpq *8164(%rip)
|
|
// DISASM2-NEXT: 1102c: 0f 1f 40 00 nopl (%rax)
|
|
// DISASM2-NEXT: 11030: ff 25 e2 1f 00 00 jmpq *8162(%rip)
|
|
// DISASM2-NEXT: 11036: 68 00 00 00 00 pushq $0
|
|
// DISASM2-NEXT: 1103b: e9 e0 ff ff ff jmp -32 <.plt>
|
|
// DISASM2-NEXT: 11040: ff 25 da 1f 00 00 jmpq *8154(%rip)
|
|
// DISASM2-NEXT: 11046: 68 01 00 00 00 pushq $1
|
|
// DISASM2-NEXT: 1104b: e9 d0 ff ff ff jmp -48 <.plt>
|
|
// DISASM2-NEXT-NOT: 110C0
|
|
|
|
.global _start
|
|
_start:
|
|
jmp bar@PLT
|
|
jmp bar@PLT
|
|
jmp zed@PLT
|
|
jmp _start@plt
|