[lld] 5741dc8 - [test] Improve x86-64-plt.s
Fangrui Song via llvm-commits
llvm-commits at lists.llvm.org
Fri May 14 10:38:45 PDT 2021
Author: Fangrui Song
Date: 2021-05-14T10:38:40-07:00
New Revision: 5741dc87a591890b5ad45134ad20023d3a2f77b7
URL: https://github.com/llvm/llvm-project/commit/5741dc87a591890b5ad45134ad20023d3a2f77b7
DIFF: https://github.com/llvm/llvm-project/commit/5741dc87a591890b5ad45134ad20023d3a2f77b7.diff
LOG: [test] Improve x86-64-plt.s
Added:
Modified:
lld/test/ELF/x86-64-plt.s
Removed:
################################################################################
diff --git a/lld/test/ELF/x86-64-plt.s b/lld/test/ELF/x86-64-plt.s
index cd0567405b3e7..53a082ed1b5ec 100644
--- a/lld/test/ELF/x86-64-plt.s
+++ b/lld/test/ELF/x86-64-plt.s
@@ -1,122 +1,80 @@
-// REQUIRES: x86
-// 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 -soname=so %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 --no-show-raw-insn %t | FileCheck --check-prefix=DISASM %s
-// RUN: llvm-readobj -S -r %t3 | FileCheck --check-prefix=CHECK2 %s
-// RUN: llvm-objdump -d --no-show-raw-insn %t3 | FileCheck --check-prefix=DISASM2 %s
+# REQUIRES: x86
+# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
+# RUN: llvm-mc -filetype=obj -triple=x86_64 %p/Inputs/shared.s -o %t2.o
+# RUN: ld.lld -shared -soname=t2 %t2.o -o %t2.so
-// CHECK: Name: .plt
-// CHECK-NEXT: Type: SHT_PROGBITS
-// CHECK-NEXT: Flags [
-// CHECK-NEXT: SHF_ALLOC
-// CHECK-NEXT: SHF_EXECINSTR
-// CHECK-NEXT: ]
-// CHECK-NEXT: Address: 0x1320
-// CHECK-NEXT: Offset:
-// CHECK-NEXT: Size: 64
-// CHECK-NEXT: Link: 0
-// CHECK-NEXT: Info: 0
-// CHECK-NEXT: AddressAlignment: 16
+# RUN: ld.lld %t.o %t2.so -o %t
+# RUN: ld.lld -shared %t.o %t2.so -o %t.so
+# RUN: llvm-readelf -S -r %t | FileCheck %s --check-prefix=CHECK1
+# RUN: llvm-objdump -d --no-show-raw-insn %t | FileCheck %s --check-prefixes=DISASM,DISASM1
+# RUN: llvm-readelf -S -r %t.so | FileCheck %s --check-prefix=CHECK2
+# RUN: llvm-objdump -d --no-show-raw-insn %t.so | FileCheck %s --check-prefixes=DISASM,DISASM2
-// CHECK: Relocations [
-// CHECK-NEXT: Section ({{.*}}) .rela.plt {
-// CHECK-NEXT: 0x3438 R_X86_64_JUMP_SLOT bar 0x0
-// CHECK-NEXT: 0x3440 R_X86_64_JUMP_SLOT zed 0x0
-// CHECK-NEXT: 0x3448 R_X86_64_JUMP_SLOT _start 0x0
-// CHECK-NEXT: }
-// CHECK-NEXT: ]
+# CHECK1: Name Type Address Off Size ES Flg Lk Inf Al
+# CHECK1: .plt PROGBITS 00000000002012e0 0002e0 000030 00 AX 0 0 16
+# CHECK1: .got.plt PROGBITS 00000000002033e0 0003e0 000028 00 WA 0 0 8
+# CHECK1: Relocation section '.rela.plt' at offset {{.*}} contains 2 entries:
+# CHECK1: 00000000002033f8 {{.*}} R_X86_64_JUMP_SLOT 0000000000000000 bar + 0
+# CHECK1-NEXT: 0000000000203400 {{.*}} R_X86_64_JUMP_SLOT 0000000000000000 weak + 0
-// CHECK2: Name: .plt
-// CHECK2-NEXT: Type: SHT_PROGBITS
-// CHECK2-NEXT: Flags [
-// CHECK2-NEXT: SHF_ALLOC
-// CHECK2-NEXT: SHF_EXECINSTR
-// CHECK2-NEXT: ]
-// CHECK2-NEXT: Address: 0x2012E0
-// CHECK2-NEXT: Offset:
-// CHECK2-NEXT: Size: 48
-// CHECK2-NEXT: Link: 0
-// CHECK2-NEXT: Info: 0
-// CHECK2-NEXT: AddressAlignment: 16
+# CHECK2: Name Type Address Off Size ES Flg Lk Inf Al
+# CHECK2: .plt PROGBITS 0000000000001310 000310 000030 00 AX 0 0 16
+# CHECK2: .got.plt PROGBITS 0000000000003400 000400 000028 00 WA 0 0 8
+# CHECK2: Relocation section '.rela.plt' at offset {{.*}} contains 2 entries:
+# CHECK2: 0000000000003418 {{.*}} R_X86_64_JUMP_SLOT 0000000000000000 bar + 0
+# CHECK2-NEXT: 0000000000003420 {{.*}} R_X86_64_JUMP_SLOT 0000000000000000 weak + 0
-// CHECK2: Relocations [
-// CHECK2-NEXT: Section ({{.*}}) .rela.plt {
-// CHECK2-NEXT: 0x2033F8 R_X86_64_JUMP_SLOT bar 0x0
-// CHECK2-NEXT: 0x203400 R_X86_64_JUMP_SLOT zed 0x0
-// CHECK2-NEXT: }
-// CHECK2-NEXT: ]
+# DISASM: <_start>:
+# DISASM-NEXT: callq {{.*}} <local>
+# DISASM-NEXT: callq {{.*}} <bar at plt>
+# DISASM-NEXT: jmp {{.*}} <bar at plt>
+# DISASM-NEXT: jmp {{.*}} <weak at plt>
-// DISASM: <_start>:
-// DISASM-NEXT: jmp {{.*}} <bar at plt>
-// DISASM-NEXT: jmp {{.*}} <bar at plt>
-// DISASM-NEXT: jmp {{.*}} <zed at plt>
-// DISASM-NEXT: jmp {{.*}} <_start at plt>
+# DISASM1: Disassembly of section .plt:
+# DISASM1-EMPTY:
+# DISASM1-NEXT: <.plt>:
+# DISASM1-NEXT: 2012e0: pushq 8450(%rip) # 2033e8
+# DISASM1-NEXT: jmpq *8452(%rip) # 2033f0
+# DISASM1-NEXT: nopl (%rax)
+# DISASM1-EMPTY:
+# DISASM1-NEXT: <bar at plt>:
+# DISASM1-NEXT: 2012f0: jmpq *8450(%rip) # 2033f8
+# DISASM1-NEXT: pushq $0
+# DISASM1-NEXT: jmp 0x2012e0 <.plt>
+# DISASM1-EMPTY:
+# DISASM1-NEXT: <weak at plt>:
+# DISASM1-NEXT: 201300: jmpq *8442(%rip) # 203400
+# DISASM1-NEXT: pushq $1
+# DISASM1-NEXT: jmp 0x2012e0 <.plt>
+# DISASM1-NOT: {{.}}
-// 0x3018 - 0x1036 = 8162
-// 0x3020 - 0x1046 = 8154
-// 0x3028 - 0x1056 = 8146
-
-// DISASM: Disassembly of section .plt:
-// DISASM-EMPTY:
-// DISASM-NEXT: <.plt>:
-// DISASM-NEXT: 1320: pushq 8450(%rip)
-// DISASM-NEXT: jmpq *8452(%rip)
-// DISASM-NEXT: nopl (%rax)
-// DISASM-EMPTY:
-// DISASM-NEXT: <bar at plt>:
-// DISASM-NEXT: 1330: jmpq *8450(%rip)
-// DISASM-NEXT: pushq $0
-// DISASM-NEXT: jmp 0x1320 <.plt>
-// DISASM-EMPTY:
-// DISASM-NEXT: <zed at plt>:
-// DISASM-NEXT: 1340: jmpq *8442(%rip)
-// DISASM-NEXT: pushq $1
-// DISASM-NEXT: jmp 0x1320 <.plt>
-// DISASM-EMPTY:
-// DISASM-NEXT: <_start at plt>:
-// DISASM-NEXT: 1350: jmpq *8434(%rip)
-// DISASM-NEXT: pushq $2
-// DISASM-NEXT: jmp 0x1320 <.plt>
-
-// 0x201030 - (0x201000 + 1) - 4 = 43
-// 0x201030 - (0x201005 + 1) - 4 = 38
-// 0x201040 - (0x20100a + 1) - 4 = 49
-// 0x201000 - (0x20100f + 1) - 4 = -20
-
-// DISASM2: <_start>:
-// DISASM2-NEXT: jmp 0x2012f0 <bar at plt>
-// DISASM2-NEXT: jmp 0x2012f0 <bar at plt>
-// DISASM2-NEXT: jmp 0x201300 <zed at plt>
-// DISASM2-NEXT: jmp 0x2012c0 <_start>
-
-// 0x202018 - 0x201036 = 4066
-// 0x202020 - 0x201046 = 4058
-
-// DISASM2: Disassembly of section .plt:
-// DISASM2-EMPTY:
-// DISASM2-NEXT: <.plt>:
-// DISASM2-NEXT: 2012e0: pushq 8450(%rip)
-// DISASM2-NEXT: jmpq *8452(%rip)
-// DISASM2-NEXT: nopl (%rax)
-// DISASM2-EMPTY:
-// DISASM2-NEXT: <bar at plt>:
-// DISASM2-NEXT: 2012f0: jmpq *8450(%rip)
-// DISASM2-NEXT: pushq $0
-// DISASM2-NEXT: jmp 0x2012e0 <.plt>
-// DISASM2-EMPTY:
-// DISASM2-NEXT: <zed at plt>:
-// DISASM2-NEXT: 201300: jmpq *8442(%rip)
-// DISASM2-NEXT: pushq $1
-// DISASM2-NEXT: jmp 0x2012e0 <.plt>
-// DISASM2-NOT: {{.}}
+# DISASM2: Disassembly of section .plt:
+# DISASM2-EMPTY:
+# DISASM2-NEXT: <.plt>:
+# DISASM2-NEXT: 1310: pushq 8434(%rip) # 3408
+# DISASM2-NEXT: jmpq *8436(%rip) # 3410
+# DISASM2-NEXT: nopl (%rax)
+# DISASM2-EMPTY:
+# DISASM2-NEXT: <bar at plt>:
+# DISASM2-NEXT: 1320: jmpq *8434(%rip) # 3418
+# DISASM2-NEXT: pushq $0
+# DISASM2-NEXT: jmp 0x1310 <.plt>
+# DISASM2-EMPTY:
+# DISASM2-NEXT: <weak at plt>:
+# DISASM2-NEXT: 1330: jmpq *8426(%rip) # 3420
+# DISASM2-NEXT: pushq $1
+# DISASM2-NEXT: jmp 0x1310 <.plt>
+# DISASM2-NOT: {{.}}
.global _start
+.weak weak
+
_start:
- jmp bar at PLT
- jmp bar at PLT
- jmp zed at PLT
- jmp _start at plt
+ call local
+ call bar
+ jmp bar at plt
+ jmp weak
+
+## foo is local and non-preemptale, no PLT is generated.
+local:
+ ret
More information about the llvm-commits
mailing list