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llvm-project/lld/test/ELF/arm-mov-relocs.s

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Initial support for ARM in lld. Add support for an ARM Target and the initial set of relocations and PLT entries that are necessary for an ARM only hello world to link. This has been tested against an ARM only sysroot from the 4.2.0 CodeSourcery Lite release. Tests have been added to test/ELF for the support that has been implemented. Main limitations: - No Thumb support - Relocations incomplete - No C++ exceptions support - No TLS support - No range extension or interworking veneer (thunk) support - No Build Attribute support - No Big-endian support The deprecated relocations R_ARM_PLT32 and R_ARM_PC24 have been implemented as these are used by the 4.2.0 CodeSourcery Lite release. llvm-svn: 271993
2016-06-07 17:31:52 +08:00
// RUN: llvm-mc -filetype=obj -triple=armv7a-unknown-linux-gnueabi %s -o %t
// RUN: ld.lld %t -o %t2
// RUN: llvm-objdump -d %t2 -triple=armv7a-unknown-linux-gnueabi | FileCheck %s
Add initial support for Thumb for ARMv7a Add support for the R_ARM_THM relocations used in the objects present in arm-linux-gnueabihf-gcc. These are: R_ARM_THM_CALL R_ARM_THM_JUMP11 R_ARM_THM_JUMP19 R_ARM_THM_JUMP24 R_ARM_THM_MOVT_ABS R_ARM_THM_MOVW_ABS_NC Interworking between ARM and Thumb is partially supported with BLX. The R_ARM_CALL relocation for ARM instructions and R_ARM_THM_CALL relocation for Thumb instructions will write out a BL or BLX depending on the state of the Target. Assumptions: - Availability of BLX and extended range of Thumb 4-byte Branch instructions. - In relocateOne if (Val & 0x1) == 1 target is Thumb, 0 is ARM. This will hold for objects that comply with the ABI for the ARM architecture. This is sufficient for hello world to work with a recent arm-linux-gnueabihf distribution. Limitations: No interworking for R_ARM_JUMP24, R_ARM_THM_JUMP24, R_ARM_THM_JUMP19 and the deprecated R_ARM_PLT32 and R_ARM_PC24 instructions as these cannot be written out as a BLX and need a state change thunk. No range extension thunks. The R_ARM_JUMP24 and R_ARM_THM_CALL have a range of 16Mb llvm-svn: 272881
2016-06-16 17:53:46 +08:00
// RUN: llvm-mc -filetype=obj -triple=thumbv7a-unknown-linux-gnueabi %s -o %t3
// RUN: ld.lld %t3 -o %t4
// RUN: llvm-objdump -d %t4 -triple=thumbv7a-unknown-linux-gnueabi | FileCheck %s
Initial support for ARM in lld. Add support for an ARM Target and the initial set of relocations and PLT entries that are necessary for an ARM only hello world to link. This has been tested against an ARM only sysroot from the 4.2.0 CodeSourcery Lite release. Tests have been added to test/ELF for the support that has been implemented. Main limitations: - No Thumb support - Relocations incomplete - No C++ exceptions support - No TLS support - No range extension or interworking veneer (thunk) support - No Build Attribute support - No Big-endian support The deprecated relocations R_ARM_PLT32 and R_ARM_PC24 have been implemented as these are used by the 4.2.0 CodeSourcery Lite release. llvm-svn: 271993
2016-06-07 17:31:52 +08:00
// REQUIRES: arm
Add initial support for Thumb for ARMv7a Add support for the R_ARM_THM relocations used in the objects present in arm-linux-gnueabihf-gcc. These are: R_ARM_THM_CALL R_ARM_THM_JUMP11 R_ARM_THM_JUMP19 R_ARM_THM_JUMP24 R_ARM_THM_MOVT_ABS R_ARM_THM_MOVW_ABS_NC Interworking between ARM and Thumb is partially supported with BLX. The R_ARM_CALL relocation for ARM instructions and R_ARM_THM_CALL relocation for Thumb instructions will write out a BL or BLX depending on the state of the Target. Assumptions: - Availability of BLX and extended range of Thumb 4-byte Branch instructions. - In relocateOne if (Val & 0x1) == 1 target is Thumb, 0 is ARM. This will hold for objects that comply with the ABI for the ARM architecture. This is sufficient for hello world to work with a recent arm-linux-gnueabihf distribution. Limitations: No interworking for R_ARM_JUMP24, R_ARM_THM_JUMP24, R_ARM_THM_JUMP19 and the deprecated R_ARM_PLT32 and R_ARM_PC24 instructions as these cannot be written out as a BLX and need a state change thunk. No range extension thunks. The R_ARM_JUMP24 and R_ARM_THM_CALL have a range of 16Mb llvm-svn: 272881
2016-06-16 17:53:46 +08:00
// Test the R_ARM_MOVW_ABS_NC and R_ARM_MOVT_ABS relocations as well as
// the R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_ABS relocations.
Initial support for ARM in lld. Add support for an ARM Target and the initial set of relocations and PLT entries that are necessary for an ARM only hello world to link. This has been tested against an ARM only sysroot from the 4.2.0 CodeSourcery Lite release. Tests have been added to test/ELF for the support that has been implemented. Main limitations: - No Thumb support - Relocations incomplete - No C++ exceptions support - No TLS support - No range extension or interworking veneer (thunk) support - No Build Attribute support - No Big-endian support The deprecated relocations R_ARM_PLT32 and R_ARM_PC24 have been implemented as these are used by the 4.2.0 CodeSourcery Lite release. llvm-svn: 271993
2016-06-07 17:31:52 +08:00
.syntax unified
.globl _start
_start:
.section .R_ARM_MOVW_ABS_NC, "ax",%progbits
movw r0, :lower16:label
movw r1, :lower16:label1
movw r2, :lower16:label2 + 4
movw r3, :lower16:label3
movw r4, :lower16:label3 + 4
// CHECK: Disassembly of section .R_ARM_MOVW_ABS_NC
// CHECK: movw r0, #0
// CHECK: movw r1, #4
// CHECK: movw r2, #12
// CHECK: movw r3, #65532
// CHECK: movw r4, #0
.section .R_ARM_MOVT_ABS, "ax",%progbits
movt r0, :upper16:label
movt r1, :upper16:label1
// FIXME: We shouldn't need to multiply by 65536.
// arguably llvm-mc incorrectly assembles addends for
// SHT_REL relocated movt instructions. When there is a relocation
// the interpretation of the addend for SHT_REL is not shifted
movt r2, :upper16:label2 + (4 * 65536)
movt r3, :upper16:label3
// FIXME: We shouldn't need to multiply by 65536 see comment above.
movt r4, :upper16:label3 + (4 * 65536)
// CHECK: Disassembly of section .R_ARM_MOVT_ABS
// CHECK: movt r0, #2
// CHECK: movt r1, #2
// CHECK: movt r2, #2
// CHECK: movt r3, #2
// CHECK: movt r4, #3
Recommit R274836 Add Thunk support framework for ARM and Mips The TinyPtrVector of const Thunk<ELFT>* in InputSections.h can cause build failures on certain compiler/library combinations when Thunk<ELFT> is not a complete type or is an abstract class. Fixed by making Thunk<ELFT> non Abstract. type or is an abstract class llvm-svn: 274863
2016-07-09 00:10:27 +08:00
.section .R_ARM_MOVW_PREL_NC, "ax",%progbits
movw r0, :lower16:label - .
movw r1, :lower16:label1 - .
movw r2, :lower16:label2 + 4 - .
movw r3, :lower16:label3 - .
movw r4, :lower16:label3 + 0x103c - .
// 0x20000 - 0x11028 = :lower16:0xefd8 (61400)
// CHECK: 11028: {{.*}} movw r0, #61400
// 0x20004 = 0x1102c = :lower16:0xefd8 (61400)
// CHECK: 1102c: {{.*}} movw r1, #61400
// 0x20008 - 0x11030 + 4 = :lower16:0xefdc (61404)
// CHECK: 11030: {{.*}} movw r2, #61404
// 0x2fffc - 0x11034 = :lower16:0x1efc8 (61384)
// CHECK: 11034: {{.*}} movw r3, #61384
// 0x2fffc - 0x11038 +0x103c :lower16:0x20000 (0)
// CHECK: 11038: {{.*}} movw r4, #0
.section .R_ARM_MOVT_PREL, "ax",%progbits
movt r0, :upper16:label - .
movt r1, :upper16:label1 - .
movt r2, :upper16:label2 + 0x4 - .
movt r3, :upper16:label3 - .
movt r4, :upper16:label3 + 0x1050 - .
// 0x20000 - 0x1103c = :upper16:0xefc4 = 0
// CHECK: 1103c: {{.*}} movt r0, #0
// 0x20004 - 0x11040 = :upper16:0xefc0 = 0
// CHECK: 11040: {{.*}} movt r1, #0
// 0x20008 - 0x11044 + 4 = :upper16:0xefc8 = 0
// CHECK: 11044: {{.*}} movt r2, #0
// 0x2fffc - 0x11048 = :upper16:0x1efb4 = 1
// CHECK: 11048: {{.*}} movt r3, #1
// 0x2fffc - 0x1104c + 0x1050 = :upper16:0x20000 = 2
// CHECK: 1104c: {{.*}} movt r4, #2
Initial support for ARM in lld. Add support for an ARM Target and the initial set of relocations and PLT entries that are necessary for an ARM only hello world to link. This has been tested against an ARM only sysroot from the 4.2.0 CodeSourcery Lite release. Tests have been added to test/ELF for the support that has been implemented. Main limitations: - No Thumb support - Relocations incomplete - No C++ exceptions support - No TLS support - No range extension or interworking veneer (thunk) support - No Build Attribute support - No Big-endian support The deprecated relocations R_ARM_PLT32 and R_ARM_PC24 have been implemented as these are used by the 4.2.0 CodeSourcery Lite release. llvm-svn: 271993
2016-06-07 17:31:52 +08:00
.section .destination, "aw",%progbits
.balign 65536
Recommit R274836 Add Thunk support framework for ARM and Mips The TinyPtrVector of const Thunk<ELFT>* in InputSections.h can cause build failures on certain compiler/library combinations when Thunk<ELFT> is not a complete type or is an abstract class. Fixed by making Thunk<ELFT> non Abstract. type or is an abstract class llvm-svn: 274863
2016-07-09 00:10:27 +08:00
// 0x20000
Initial support for ARM in lld. Add support for an ARM Target and the initial set of relocations and PLT entries that are necessary for an ARM only hello world to link. This has been tested against an ARM only sysroot from the 4.2.0 CodeSourcery Lite release. Tests have been added to test/ELF for the support that has been implemented. Main limitations: - No Thumb support - Relocations incomplete - No C++ exceptions support - No TLS support - No range extension or interworking veneer (thunk) support - No Build Attribute support - No Big-endian support The deprecated relocations R_ARM_PLT32 and R_ARM_PC24 have been implemented as these are used by the 4.2.0 CodeSourcery Lite release. llvm-svn: 271993
2016-06-07 17:31:52 +08:00
label:
.word 0
Recommit R274836 Add Thunk support framework for ARM and Mips The TinyPtrVector of const Thunk<ELFT>* in InputSections.h can cause build failures on certain compiler/library combinations when Thunk<ELFT> is not a complete type or is an abstract class. Fixed by making Thunk<ELFT> non Abstract. type or is an abstract class llvm-svn: 274863
2016-07-09 00:10:27 +08:00
// 0x20004
Initial support for ARM in lld. Add support for an ARM Target and the initial set of relocations and PLT entries that are necessary for an ARM only hello world to link. This has been tested against an ARM only sysroot from the 4.2.0 CodeSourcery Lite release. Tests have been added to test/ELF for the support that has been implemented. Main limitations: - No Thumb support - Relocations incomplete - No C++ exceptions support - No TLS support - No range extension or interworking veneer (thunk) support - No Build Attribute support - No Big-endian support The deprecated relocations R_ARM_PLT32 and R_ARM_PC24 have been implemented as these are used by the 4.2.0 CodeSourcery Lite release. llvm-svn: 271993
2016-06-07 17:31:52 +08:00
label1:
.word 1
Recommit R274836 Add Thunk support framework for ARM and Mips The TinyPtrVector of const Thunk<ELFT>* in InputSections.h can cause build failures on certain compiler/library combinations when Thunk<ELFT> is not a complete type or is an abstract class. Fixed by making Thunk<ELFT> non Abstract. type or is an abstract class llvm-svn: 274863
2016-07-09 00:10:27 +08:00
// 0x20008
Initial support for ARM in lld. Add support for an ARM Target and the initial set of relocations and PLT entries that are necessary for an ARM only hello world to link. This has been tested against an ARM only sysroot from the 4.2.0 CodeSourcery Lite release. Tests have been added to test/ELF for the support that has been implemented. Main limitations: - No Thumb support - Relocations incomplete - No C++ exceptions support - No TLS support - No range extension or interworking veneer (thunk) support - No Build Attribute support - No Big-endian support The deprecated relocations R_ARM_PLT32 and R_ARM_PC24 have been implemented as these are used by the 4.2.0 CodeSourcery Lite release. llvm-svn: 271993
2016-06-07 17:31:52 +08:00
label2:
.word 2
// Test label3 is immediately below 2^16 alignment boundary
.space 65536 - 16
Recommit R274836 Add Thunk support framework for ARM and Mips The TinyPtrVector of const Thunk<ELFT>* in InputSections.h can cause build failures on certain compiler/library combinations when Thunk<ELFT> is not a complete type or is an abstract class. Fixed by making Thunk<ELFT> non Abstract. type or is an abstract class llvm-svn: 274863
2016-07-09 00:10:27 +08:00
// 0x2fffc
Initial support for ARM in lld. Add support for an ARM Target and the initial set of relocations and PLT entries that are necessary for an ARM only hello world to link. This has been tested against an ARM only sysroot from the 4.2.0 CodeSourcery Lite release. Tests have been added to test/ELF for the support that has been implemented. Main limitations: - No Thumb support - Relocations incomplete - No C++ exceptions support - No TLS support - No range extension or interworking veneer (thunk) support - No Build Attribute support - No Big-endian support The deprecated relocations R_ARM_PLT32 and R_ARM_PC24 have been implemented as these are used by the 4.2.0 CodeSourcery Lite release. llvm-svn: 271993
2016-06-07 17:31:52 +08:00
label3:
.word 3
// label3 + 4 is on a 2^16 alignment boundary
.word 4