69 changes: 69 additions & 0 deletions lld/test/elf/ARM/rel-group-relocs.test
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,69 @@
# Check handling of group relocations (R_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G1_NC,
# R_ARM_LDR_PC_G2).
#
# RUN: yaml2obj -format=elf %s > %t-o.o
# RUN: lld -flavor gnu -target arm -m armelf_linux_eabi -Bstatic \
# RUN: -e plt_func %t-o.o -o %t
# RUN: llvm-objdump -s -t %t -disassemble | FileCheck %s

# CHECK: Disassembly of section .text:
# CHECK: plt_func:
# CHECK: 400074: 00 c6 8f e2 add r12, pc, #0, #12
# ^ after execution: r12=0x40007c
# CHECK: 400078: 00 ca 8c e2 add r12, r12, #0, #20
# ^ after execution: r12=0x40007C
# CHECK: 40007c: 84 ff bc e5 ldr pc, [r12, #3972]!
# ^ referenced address is 0x401000, after execution pc=0x400074
# CHECK: Contents of section .data:
# CHECK: 401000 74004000
# ^ this value is written to pc after execution of comand 0x40007c
# ^ this address is referenced by command at 0x40007c
# CHECK: SYMBOL TABLE:
# CHECK: 00400074 g F .text 0000000c plt_func
# CHECK: 00401000 g .data 00000004 got_func

---
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_ARM
Sections:
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
AddressAlign: 0x4
Content: 00C08FE200C08CE200F0BCE5
- Name: .rela.text
Type: SHT_RELA
Link: .symtab
Info: .text
AddressAlign: 0x4
Relocations:
- Offset: 0
Symbol: got_func
Type: R_ARM_ALU_PC_G0_NC
Addend: -8
- Offset: 0x4
Symbol: got_func
Type: R_ARM_ALU_PC_G1_NC
Addend: -4
- Offset: 0x8
Symbol: got_func
Type: R_ARM_LDR_PC_G2
- Name: .data
Type: SHT_PROGBITS
Flags: [ SHF_WRITE, SHF_ALLOC ]
AddressAlign: 0x4
Content: 74004000
Symbols:
Local:
Global:
- Name: plt_func
Type: STT_FUNC
Section: .text
Size: 0xC
- Name: got_func
Section: .data
Size: 0x4
...
102 changes: 102 additions & 0 deletions lld/test/elf/ARM/rel-ifunc.test
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,102 @@
# Check handling of IFUNC (gnu_indirect_function).
# RUN: yaml2obj -format=elf %s > %t-o.o
# RUN: lld -flavor gnu -target arm -m armelf_linux_eabi -Bstatic \
# RUN: %t-o.o -o %t
# RUN: llvm-objdump -s -t %t | FileCheck %s

# CHECK: Contents of section .rel.plt:
# CHECK: 400074 00104000
# CHECK: Contents of section .plt:
# CHECK: 400080 00c68fe2 00ca8ce2 78ffbce5
# CHECK: Contents of section .text:
# CHECK: 4001ac 00482de9 04b08de2 d4ffffeb b0ffffeb
# ^ bl #-320 (to address 0x400080=__plt_ifunc_myfunc)
# CHECK: Contents of section .got.plt:
# CHECK: 401000 c4004000
# CHECK: SYMBOL TABLE:
# CHECK: 00400080 l F .plt 0000000c __plt_ifunc_myfunc
# CHECK: 004000c4 g .text 00000020 myfunc
# CHECK: 00400074 g *ABS* 00000000 __rel_iplt_start
# CHECK: 0040007c g *ABS* 00000000 __rel_iplt_end

---
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_REL
Machine: EM_ARM
Flags: [ EF_ARM_EABI_VER5 ]
Sections:
- Name: .text
Type: SHT_PROGBITS
Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
AddressAlign: 0x0000000000000004
Content: 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
- Name: .rel.text
Type: SHT_REL
Link: .symtab
AddressAlign: 0x0000000000000004
Info: .text
Relocations:
- Offset: 0x0000000000000040
Symbol: myfunc1
Type: R_ARM_MOVW_ABS_NC
- Offset: 0x0000000000000044
Symbol: myfunc1
Type: R_ARM_MOVT_ABS
- Offset: 0x000000000000008C
Symbol: __rel_iplt_start
Type: R_ARM_MOVW_ABS_NC
- Offset: 0x0000000000000090
Symbol: __rel_iplt_start
Type: R_ARM_MOVT_ABS
- Offset: 0x0000000000000108
Symbol: __rel_iplt_end
Type: R_ARM_MOVW_ABS_NC
- Offset: 0x000000000000010C
Symbol: __rel_iplt_end
Type: R_ARM_MOVT_ABS
- Offset: 0x000000000000012C
Symbol: myfunc
Type: R_ARM_CALL
Symbols:
Local:
- Name: .text
Type: STT_SECTION
Section: .text
- Name: '$a'
Section: .text
- Name: elf_ifunc_invoke
Type: STT_FUNC
Section: .text
Value: 0x0000000000000058
Size: 0x0000000000000028
- Name: apply_irel
Type: STT_FUNC
Section: .text
Value: 0x0000000000000080
Size: 0x00000000000000A0
Global:
- Name: myfunc1
Type: STT_FUNC
Section: .text
Size: 0x000000000000001C
- Name: myfunc2
Type: STT_FUNC
Section: .text
Value: 0x000000000000001C
Size: 0x000000000000001C
- Name: myfunc
Type: STT_GNU_IFUNC
Section: .text
Value: 0x0000000000000038
Size: 0x0000000000000020
- Name: _start
Type: STT_FUNC
Section: .text
Value: 0x0000000000000120
Size: 0x000000000000001C
Weak:
- Name: __rel_iplt_start
- Name: __rel_iplt_end
...
12 changes: 6 additions & 6 deletions lld/test/elf/ARM/undef-lazy-symbol.test
View file
Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@
# RUN: --noinhibit-exec %t-got.o -o %t
# RUN: llvm-readobj -symbols %t | FileCheck -check-prefix=GOT %s

# GOT: Name: _GLOBAL_OFFSET_TABLE_ (185)
# GOT: Name: _GLOBAL_OFFSET_TABLE_ (183)
# GOT-NEXT: Value: {{[0-9]+}}
# GOT-NEXT: Size: 0
# GOT-NEXT: Binding: Global (0x1)
Expand All @@ -20,15 +20,15 @@
# RUN: --defsym=main=fn --noinhibit-exec %t-exidx.o -o %t
# RUN: llvm-readobj -symbols %t | FileCheck -check-prefix=EXIDX %s

# EXIDX: Name: __exidx_start (188)
# EXIDX: Name: __exidx_start (186)
# EXIDX-NEXT: Value: {{[0-9]+}}
# EXIDX-NEXT: Size: 0
# EXIDX-NEXT: Binding: Global (0x1)
# EXIDX-NEXT: Type: Object (0x1)
# EXIDX-NEXT: Other: 0
# EXIDX-NEXT: Section: Absolute (0xFFF1)
#
# EXIDX: Name: __exidx_end (202)
# EXIDX: Name: __exidx_end (200)
# EXIDX-NEXT: Value: {{[0-9]+}}
# EXIDX-NEXT: Size: 0
# EXIDX-NEXT: Binding: Global (0x1)
Expand All @@ -44,23 +44,23 @@
# RUN: --noinhibit-exec %t-got.o %t-exidx.o -o %t
# RUN: llvm-readobj -symbols %t | FileCheck -check-prefix=SYMS %s

# SYMS: Name: _GLOBAL_OFFSET_TABLE_ (188)
# SYMS: Name: _GLOBAL_OFFSET_TABLE_ (186)
# SYMS-NEXT: Value: {{[0-9]+}}
# SYMS-NEXT: Size: 0
# SYMS-NEXT: Binding: Global (0x1)
# SYMS-NEXT: Type: Object (0x1)
# SYMS-NEXT: Other: 0
# SYMS-NEXT: Section: Absolute (0xFFF1)
#
# SYMS: Name: __exidx_start (210)
# SYMS: Name: __exidx_start (208)
# SYMS-NEXT: Value: {{[0-9]+}}
# SYMS-NEXT: Size: 0
# SYMS-NEXT: Binding: Global (0x1)
# SYMS-NEXT: Type: Object (0x1)
# SYMS-NEXT: Other: 0
# SYMS-NEXT: Section: Absolute (0xFFF1)
#
# SYMS: Name: __exidx_end (224)
# SYMS: Name: __exidx_end (222)
# SYMS-NEXT: Value: {{[0-9]+}}
# SYMS-NEXT: Size: 0
# SYMS-NEXT: Binding: Global (0x1)
Expand Down