# Check that PLT entries are properly generated for cases when # referenced from both ARM and Thumb code. # # 1. ARM code generates PLT without transition veneer. # RUN: yaml2obj -format=elf -docnum 1 %s > %t-f1-arm.o # RUN: lld -flavor gnu -target arm-linux-gnu \ # RUN: -Bstatic --noinhibit-exec %t-f1-arm.o -o %t # RUN: llvm-objdump -s %t | FileCheck -check-prefix=ARM-ONE %s # ARM-ONE: Contents of section .plt: # ARM-ONE-NEXT: 40007c 00c68fe2 00ca8ce2 7cffbce5 # ^ regular veneer ^ # Next line shows that .plt section ends. # ARM-ONE-NEXT: Contents of section .text: # 2. Thumb code generates PLT with transition veneer. # RUN: yaml2obj -format=elf -docnum 2 %s > %t-f1-thm.o # RUN: lld -flavor gnu -target arm-linux-gnu \ # RUN: -Bstatic --noinhibit-exec %t-f1-thm.o -o %t # RUN: llvm-objdump -s %t | FileCheck -check-prefix=THM-ONE %s # THM-ONE: Contents of section .plt: # THM-ONE-NEXT: 40007c 78470000 00c68fe2 00ca8ce2 78ffbce5 # bx pc ^^ ^ regular veneer ^ # Next line shows that .plt section ends. # THM-ONE-NEXT: Contents of section .text: # 3. ARM + Thumb code generate same single PLT with transition veneer. # RUN: yaml2obj -format=elf -docnum 1 %s > %t-f1-arm.o # RUN: yaml2obj -format=elf -docnum 3 %s > %t-f1-thm-for-arm.o # RUN: lld -flavor gnu -target arm-linux-gnu \ # RUN: -Bstatic --noinhibit-exec %t-f1-arm.o %t-f1-thm-for-arm.o -o %t # RUN: llvm-objdump -s %t | FileCheck -check-prefix=THM-ONE %s # 4. Thumb + ARM code generate same single PLT with transition veneer. # RUN: yaml2obj -format=elf -docnum 3 %s > %t-f1-thm-for-arm.o # RUN: yaml2obj -format=elf -docnum 1 %s > %t-f1-arm.o # RUN: lld -flavor gnu -target arm-linux-gnu \ # RUN: -Bstatic --noinhibit-exec %t-f1-thm-for-arm.o %t-f1-arm.o -o %t # RUN: llvm-objdump -s %t | FileCheck -check-prefix=THM-ONE %s # 5. ARM + ARM code generate two PLTs without transition veneers. # RUN: yaml2obj -format=elf -docnum 1 %s > %t-f1-arm.o # RUN: yaml2obj -format=elf -docnum 4 %s > %t-f2-arm.o # RUN: lld -flavor gnu -target arm-linux-gnu \ # RUN: -Bstatic --noinhibit-exec %t-f1-arm.o %t-f2-arm.o -o %t # RUN: llvm-objdump -s %t | FileCheck -check-prefix=ARM-TWO %s # ARM-TWO: Contents of section .plt: # ARM-TWO-NEXT: 400084 00c68fe2 00ca8ce2 74ffbce5 00c68fe2 # ^ regular veneer 1 ^ ^ -- # ARM-TWO-NEXT: 400094 00ca8ce2 6cffbce5 # --- regular veneer 2 ^ # Next line shows that .plt section ends. # ARM-TWO-NEXT: Contents of section .text: # 6. ARM + Thumb code generate two PLTs without and with transition veneer. # RUN: yaml2obj -format=elf -docnum 1 %s > %t-f1-arm.o # RUN: yaml2obj -format=elf -docnum 5 %s > %t-f2-thm.o # RUN: lld -flavor gnu -target arm-linux-gnu \ # RUN: -Bstatic --noinhibit-exec %t-f1-arm.o %t-f2-thm.o -o %t # RUN: llvm-objdump -s %t | FileCheck -check-prefix=ARM-THM-TWO %s # ARM-THM-TWO: Contents of section .plt: # ARM-THM-TWO-NEXT: 400084 00c68fe2 00ca8ce2 74ffbce5 78470000 # ^ regular veneer 1 ^ ^^ bx pc 2 # ARM-THM-TWO-NEXT: 400094 00c68fe2 00ca8ce2 68ffbce5 # ^ regular veneer 2 ^ # Next line shows that .plt section ends. # ARM-THM-TWO-NEXT: Contents of section .text: # 7. Thumb + ARM code generate two PLTs with and without transition veneer. # RUN: yaml2obj -format=elf -docnum 2 %s > %t-f1-thm.o # RUN: yaml2obj -format=elf -docnum 4 %s > %t-f2-arm.o # RUN: lld -flavor gnu -target arm-linux-gnu \ # RUN: -Bstatic --noinhibit-exec %t-f1-thm.o %t-f2-arm.o -o %t # RUN: llvm-objdump -s %t | FileCheck -check-prefix=THM-ARM-TWO %s # THM-ARM-TWO: Contents of section .plt: # THM-ARM-TWO-NEXT: 400084 78470000 00c68fe2 00ca8ce2 70ffbce # bx pc 1 ^^ ^ regular veneer 1 ^ # THM-ARM-TWO-NEXT: 400094 00c68fe2 00ca8ce2 68ffbce5 # ^ regular veneer 2 ^ # Next line shows that .plt section ends. # THM-ARM-TWO-NEXT: Contents of section .text: # 8. Thumb + Thumb code generate two PLTs with transition veneers. # RUN: yaml2obj -format=elf -docnum 2 %s > %t-f1-thm.o # RUN: yaml2obj -format=elf -docnum 5 %s > %t-f2-thm.o # RUN: lld -flavor gnu -target arm-linux-gnu \ # RUN: -Bstatic --noinhibit-exec %t-f1-thm.o %t-f2-thm.o -o %t # RUN: llvm-objdump -s %t | FileCheck -check-prefix=THM-TWO %s # THM-TWO: Contents of section .plt: # THM-TWO-NEXT: 400084 78470000 00c68fe2 00ca8ce2 70ffbce5 # bx pc 1 ^^ ^ regular veneer 1 ^ # THM-TWO-NEXT: 400094 78470000 00c68fe2 00ca8ce2 64ffbce5 # bx pc 2 ^^ ^ regular veneer 2 ^ # Next line shows that .plt section ends. # THM-TWO-NEXT: Contents of section .text: # 9. Thumb code generates PLT without transition veneer when bl->blx is done. # RUN: yaml2obj -format=elf -docnum 6 %s > %t-f1-thm-c.o # RUN: lld -flavor gnu -target arm-linux-gnu \ # RUN: -Bstatic --noinhibit-exec %t-f1-thm-c.o -o %t # RUN: llvm-objdump -s %t | FileCheck -check-prefix=THM-BL %s # THM-BL: Contents of section .plt: # THM-BL-NEXT: 40007c 00c68fe2 00ca8ce2 7cffbce5 # ^ regular veneer ^ # Next line shows that .plt section ends. # THM-BL-NEXT: Contents of section .text: # f1-arm.o --- 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: 04B02DE500B08DE2003000E3003040E30300A0E100D04BE204B09DE41EFF2FE100482DE904B08DE2FEFFFFEA0030A0E10300A0E10088BDE8 - Name: .rel.text Type: SHT_REL Link: .symtab AddressAlign: 0x0000000000000004 Info: .text Relocations: - Offset: 0x0000000000000008 Symbol: main Type: R_ARM_MOVW_ABS_NC - Offset: 0x000000000000000C Symbol: main Type: R_ARM_MOVT_ABS - Offset: 0x0000000000000028 Symbol: f1 Type: R_ARM_JUMP24 - Name: .data Type: SHT_PROGBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Content: '' - Name: .bss Type: SHT_NOBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Symbols: Global: - Name: f1 Type: STT_GNU_IFUNC Section: .text - Name: main Type: STT_FUNC Section: .text Value: 0x0000000000000020 # f1-thm.o --- 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: 80B400AF40F20003C0F200031846BD465DF8047B704700BF80B500AFFFF7FEBF0346184680BD00BF - Name: .rel.text Type: SHT_REL Link: .symtab AddressAlign: 0x0000000000000004 Info: .text Relocations: - Offset: 0x0000000000000004 Symbol: main Type: R_ARM_THM_MOVW_ABS_NC - Offset: 0x0000000000000008 Symbol: main Type: R_ARM_THM_MOVT_ABS - Offset: 0x000000000000001C Symbol: f1 Type: R_ARM_THM_JUMP24 - Name: .data Type: SHT_PROGBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Content: '' - Name: .bss Type: SHT_NOBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Symbols: Global: - Name: f1 Type: STT_GNU_IFUNC Section: .text Value: 0x0000000000000001 - Name: main Type: STT_FUNC Section: .text Value: 0x0000000000000019 # f1-thm-for-arm.o --- 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: 80B500AFFFF7FEBF0346184680BD00BF - Name: .rel.text Type: SHT_REL Link: .symtab AddressAlign: 0x0000000000000004 Info: .text Relocations: - Offset: 0x0000000000000004 Symbol: f1 Type: R_ARM_THM_JUMP24 - Name: .data Type: SHT_PROGBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Content: '' - Name: .bss Type: SHT_NOBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Symbols: Global: - Name: f Type: STT_FUNC Section: .text Value: 0x0000000000000001 - Name: f1 # f2-arm.o --- 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: 04B02DE500B08DE2003000E3003040E30300A0E100D04BE204B09DE41EFF2FE100482DE904B08DE2FEFFFFEA0030A0E10300A0E10088BDE8 - Name: .rel.text Type: SHT_REL Link: .symtab AddressAlign: 0x0000000000000004 Info: .text Relocations: - Offset: 0x0000000000000008 Symbol: f Type: R_ARM_MOVW_ABS_NC - Offset: 0x000000000000000C Symbol: f Type: R_ARM_MOVT_ABS - Offset: 0x0000000000000028 Symbol: f2 Type: R_ARM_JUMP24 - Name: .data Type: SHT_PROGBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Content: '' - Name: .bss Type: SHT_NOBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Symbols: Global: - Name: f2 Type: STT_GNU_IFUNC Section: .text - Name: f Type: STT_FUNC Section: .text Value: 0x0000000000000020 # f2-thm.o --- 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: 80B400AF40F20003C0F200031846BD465DF8047B704700BF80B500AFFFF7FEBF0346184680BD00BF - Name: .rel.text Type: SHT_REL Link: .symtab AddressAlign: 0x0000000000000004 Info: .text Relocations: - Offset: 0x0000000000000004 Symbol: f Type: R_ARM_THM_MOVW_ABS_NC - Offset: 0x0000000000000008 Symbol: f Type: R_ARM_THM_MOVT_ABS - Offset: 0x000000000000001C Symbol: f2 Type: R_ARM_THM_JUMP24 - Name: .data Type: SHT_PROGBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Content: '' - Name: .bss Type: SHT_NOBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Symbols: Global: - Name: f2 Type: STT_GNU_IFUNC Section: .text Value: 0x0000000000000001 - Name: f Type: STT_FUNC Section: .text Value: 0x0000000000000019 # f1-thm-c.o --- 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: 80B400AF40F20003C0F200031846BD465DF8047B704700BF80B500AFFFF7FEFF0346184680BD00BF - Name: .rel.text Type: SHT_REL Link: .symtab AddressAlign: 0x0000000000000004 Info: .text Relocations: - Offset: 0x0000000000000004 Symbol: main Type: R_ARM_THM_MOVW_ABS_NC - Offset: 0x0000000000000008 Symbol: main Type: R_ARM_THM_MOVT_ABS - Offset: 0x000000000000001C Symbol: f1 Type: R_ARM_THM_CALL - Name: .data Type: SHT_PROGBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Content: '' - Name: .bss Type: SHT_NOBITS Flags: [ SHF_WRITE, SHF_ALLOC ] AddressAlign: 0x0000000000000001 Symbols: Global: - Name: f1 Type: STT_GNU_IFUNC Section: .text Value: 0x0000000000000001 - Name: main Type: STT_FUNC Section: .text Value: 0x0000000000000019 ...