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[ELF][test] Add tests for mixed GD-to-IE and IE, mixed TLSDESC and GD 

Note: mixed TLSDESC and GD currently does not work.
This commit is contained in:
Fangrui Song 2021-12-24 22:24:15 -08:00
parent 3cfe375ae4
commit cde37a7e5a
2 changed files with 49 additions and 13 deletions
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37
lld/test/ELF/x86-64-tls-ie.s
View File

@ -4,7 +4,7 @@
// RUN: ld.lld -shared %t2.o -soname=so -o %t2.so
// RUN: ld.lld -e main %t1.o %t2.so -o %t3
// RUN: llvm-readobj -S -r %t3 | FileCheck %s
// RUN: llvm-objdump -d %t3 | FileCheck --check-prefix=DISASM %s
// RUN: llvm-objdump -d --no-show-raw-insn %t3 | FileCheck --check-prefix=DISASM %s
// CHECK: Section {
// CHECK: Index: 9
@ -15,7 +15,7 @@
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// CHECK-NEXT: Address: [[ADDR:.*]]
// CHECK-NEXT: Offset: 0x3B0
// CHECK-NEXT: Offset: 0x3F0
// CHECK-NEXT: Size: 16
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
@ -26,23 +26,27 @@
// CHECK: Relocations [
// CHECK-NEXT: Section (5) .rela.dyn {
// CHECK-NEXT: [[ADDR]] R_X86_64_TPOFF64 tls1 0x0
// CHECK-NEXT: 0x2023B8 R_X86_64_TPOFF64 tls0 0x0
// CHECK-NEXT: 0x2023F8 R_X86_64_TPOFF64 tls0 0x0
// CHECK-NEXT: }
// CHECK-NEXT: ]
// 0x2012d0 + 4313 + 7 = 0x2023B0
// 0x2012dA + 4311 + 7 = 0x2023B8
// 0x2012e4 + 4301 + 7 = 0x2023B8
/// 0x2023F0 - 0x201307 = 4329
/// 0x2023F8 - 0x201311 = 4327
/// 0x2023F8 - 0x20131b = 4317
// DISASM: Disassembly of section .text:
// DISASM-EMPTY:
// DISASM-NEXT: <main>:
// DISASM-NEXT: 2012d0: {{.*}} movq 4313(%rip), %rax
// DISASM-NEXT: 2012d7: {{.*}} movl %fs:(%rax), %eax
// DISASM-NEXT: 2012da: {{.*}} movq 4311(%rip), %rax
// DISASM-NEXT: 2012e1: {{.*}} movl %fs:(%rax), %eax
// DISASM-NEXT: 2012e4: {{.*}} movq 4301(%rip), %rax
// DISASM-NEXT: 2012eb: {{.*}} movl %fs:(%rax), %eax
// DISASM-NEXT: 2012ee: {{.*}} retq
// DISASM-NEXT: movq 4329(%rip), %rax
// DISASM-NEXT: 201307: movl %fs:(%rax), %eax
// DISASM-NEXT: movq 4327(%rip), %rax
// DISASM-NEXT: 201311: movl %fs:(%rax), %eax
// DISASM-NEXT: movq 4317(%rip), %rax
// DISASM-NEXT: 20131b: movl %fs:(%rax), %eax
/// 0x2023F0 - 0x20132e = 4290
// DISASM-NEXT: movq %fs:0, %rax
// DISASM-NEXT: addq 4290(%rip), %rax
// DISASM-NEXT: 20132e: retq
.section .tdata,"awT",@progbits
@ -57,4 +61,11 @@ main:
movl %fs:0(%rax), %eax
movq tls0@GOTTPOFF(%rip), %rax
movl %fs:0(%rax), %eax
## Relaxed to TLS IE. Share the GOT entry with GOTTPOFF.
.byte 0x66
leaq tls1@tlsgd(%rip), %rdi
.value 0x6666
rex64
call __tls_get_addr@PLT
ret

25
lld/test/ELF/x86-64-tlsdesc-gd-mixed.s Normal file
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@ -0,0 +1,25 @@
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
# RUN: ld.lld -shared %t.o -o %t.so
# RUN: llvm-readobj -r %t.so | FileCheck %s --check-prefix=RELA
## FIXME Both TLSDESC and DTPMOD64/DTPOFF64 should be present.
# RELA: .rela.dyn {
# RELA-NEXT: 0x2430 R_X86_64_TLSDESC a 0x0
# RELA-NEXT: }
leaq a@tlsdesc(%rip), %rax
call *a@tlscall(%rax)
movl %fs:(%rax), %eax
.byte 0x66
leaq a@tlsgd(%rip), %rdi
.word 0x6666
rex64
call __tls_get_addr@PLT
.section .tbss
.globl a
.zero 8
a:
.zero 4