| // REQUIRES: x86 |
| |
| // Checks whether the TLS optimizations match the cases in Chapter 11 of |
| // https://raw.githubusercontent.com/wiki/hjl-tools/x86-psABI/x86-64-psABI-1.0.pdf |
| |
| // 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/tls-opt-gdie.s -o %tso.o |
| // RUN: ld.lld -shared %tso.o -o %t.so |
| // RUN: ld.lld %t.o %t.so -o %t1 |
| // RUN: llvm-readobj -r %t1 | FileCheck --check-prefix=RELOC %s |
| // RUN: llvm-objdump -d %t1 | FileCheck --check-prefix=DISASM %s |
| |
| // RELOC: Relocations [ |
| // RELOC-NEXT: Section {{.*}} .rela.dyn { |
| // RELOC-NEXT: 0x2020C0 R_X86_64_TPOFF64 tlsshared0 0x0 |
| // RELOC-NEXT: 0x2020C8 R_X86_64_TPOFF64 tlsshared1 0x0 |
| // RELOC-NEXT: } |
| // RELOC-NEXT: ] |
| |
| // DISASM: _start: |
| |
| // Table 11.5: GD -> IE Code Transition (LP64) |
| // DISASM-NEXT: 201000: 64 48 8b 04 25 00 00 00 00 movq %fs:0, %rax |
| // DISASM-NEXT: 201009: 48 03 05 b0 10 00 00 addq 4272(%rip), %rax |
| // DISASM-NEXT: 201010: 64 48 8b 04 25 00 00 00 00 movq %fs:0, %rax |
| // DISASM-NEXT: 201019: 48 03 05 a8 10 00 00 addq 4264(%rip), %rax |
| |
| // Table 11.7: GD -> LE Code Transition (LP64) |
| // DISASM-NEXT: 201020: 64 48 8b 04 25 00 00 00 00 movq %fs:0, %rax |
| // DISASM-NEXT: 201029: 48 8d 80 f8 ff ff ff leaq -8(%rax), %rax |
| // DISASM-NEXT: 201030: 64 48 8b 04 25 00 00 00 00 movq %fs:0, %rax |
| // DISASM-NEXT: 201039: 48 8d 80 fc ff ff ff leaq -4(%rax), %rax |
| |
| |
| // Table 11.9: LD -> LE Code Transition (LP64) |
| // DISASM-NEXT: 201040: 66 66 66 66 64 48 8b 04 25 00 00 00 00 movq %fs:0, %rax |
| // DISASM-NEXT: 20104d: 66 66 66 66 64 48 8b 04 25 00 00 00 00 movq %fs:0, %rax |
| |
| .type tls0,@object |
| .section .tbss,"awT",@nobits |
| .globl tls0 |
| .align 4 |
| tls0: |
| .long 0 |
| .size tls0, 4 |
| |
| .type tls1,@object |
| .globl tls1 |
| .align 4 |
| tls1: |
| .long 0 |
| .size tls1, 4 |
| |
| .section .text |
| .globl _start |
| _start: |
| // Table 11.5: GD -> IE Code Transition (LP64) |
| .byte 0x66 |
| leaq tlsshared0@tlsgd(%rip),%rdi |
| .byte 0x66 |
| rex64 |
| call *__tls_get_addr@GOTPCREL(%rip) |
| |
| .byte 0x66 |
| leaq tlsshared1@tlsgd(%rip),%rdi |
| .byte 0x66 |
| rex64 |
| call *__tls_get_addr@GOTPCREL(%rip) |
| |
| // Table 11.7: GD -> LE Code Transition (LP64) |
| .byte 0x66 |
| leaq tls0@tlsgd(%rip),%rdi |
| .byte 0x66 |
| rex64 |
| call *__tls_get_addr@GOTPCREL(%rip) |
| |
| .byte 0x66 |
| leaq tls1@tlsgd(%rip),%rdi |
| .byte 0x66 |
| rex64 |
| call *__tls_get_addr@GOTPCREL(%rip) |
| |
| // Table 11.9: LD -> LE Code Transition (LP64) |
| leaq tls0@tlsld(%rip),%rdi |
| call *__tls_get_addr@GOTPCREL(%rip) |
| |
| leaq tls1@tlsld(%rip),%rdi |
| call *__tls_get_addr@GOTPCREL(%rip) |
