| // REQUIRES: arm |
| // RUN: llvm-mc -g --triple=armv7a-linux-gnueabihf -arm-add-build-attributes -filetype=obj -o %t.o %s |
| // RUN: ld.lld %t.o -o %t 2>&1 | FileCheck %s --check-prefix=WARN |
| // RUN: llvm-objdump --no-show-raw-insn -d %t | FileCheck %s |
| |
| .syntax unified |
| .section .arm_target, "ax", %progbits |
| .balign 0x1000 |
| .arm |
| arm_func_with_notype: |
| .type arm_func_with_explicit_notype, %notype |
| arm_func_with_explicit_notype: |
| bx lr |
| |
| .section .thumb_target, "ax", %progbits |
| .balign 4 |
| .thumb |
| thumb_func_with_notype: |
| .type thumb_func_with_explicit_notype, %notype |
| thumb_func_with_explicit_notype: |
| bx lr |
| |
| /// All the symbols that are targets of the branch relocations do not have |
| /// type STT_FUNC. LLD should not insert interworking thunks as non STT_FUNC |
| /// symbols have no state information, the ABI assumes the user has manually |
| /// done the interworking. For the BL and BLX instructions LLD should |
| /// preserve the original instruction instead of writing out the correct one |
| /// for the assumed state at the target. |
| /// LLD will warn for the BL and BLX cases where the behavior has changed |
| /// from LLD 10.0 |
| .section .arm_caller, "ax", %progbits |
| .balign 4 |
| .arm |
| .global _start |
| _start: |
| b .arm_target |
| b arm_func_with_notype |
| b arm_func_with_explicit_notype |
| b .thumb_target |
| b thumb_func_with_notype |
| b thumb_func_with_explicit_notype |
| bl .arm_target |
| bl arm_func_with_notype |
| bl arm_func_with_explicit_notype |
| bl .thumb_target |
| bl thumb_func_with_notype |
| bl thumb_func_with_explicit_notype |
| // WARN: {{.*}}.o:(.arm_caller+0x30): branch and link relocation: R_ARM_CALL to STT_SECTION symbol .arm_target ; interworking not performed; {{.*}}.s:[[#@LINE+1]] |
| blx .arm_target |
| // WARN: {{.*}}.o:(.arm_caller+0x34): branch and link relocation: R_ARM_CALL to non STT_FUNC symbol: arm_func_with_notype interworking not performed; consider using directive '.type arm_func_with_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required; {{.*}}.s:[[#@LINE+1]] |
| blx arm_func_with_notype |
| // WARN: {{.*}}.o:(.arm_caller+0x38): branch and link relocation: R_ARM_CALL to non STT_FUNC symbol: arm_func_with_explicit_notype interworking not performed; consider using directive '.type arm_func_with_explicit_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required; {{.*}}.s:[[#@LINE+1]] |
| blx arm_func_with_explicit_notype |
| // WARN: {{.*}}.o:(.arm_caller+0x3c): branch and link relocation: R_ARM_CALL to STT_SECTION symbol .thumb_target ; interworking not performed; {{.*}}.s:[[#@LINE+1]] |
| blx .thumb_target |
| // WARN: {{.*}}.o:(.arm_caller+0x40): branch and link relocation: R_ARM_CALL to non STT_FUNC symbol: thumb_func_with_notype interworking not performed; consider using directive '.type thumb_func_with_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required; {{.*}}.s:[[#@LINE+1]] |
| blx thumb_func_with_notype |
| // WARN: {{.*}}.o:(.arm_caller+0x44): branch and link relocation: R_ARM_CALL to non STT_FUNC symbol: thumb_func_with_explicit_notype interworking not performed; consider using directive '.type thumb_func_with_explicit_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required; {{.*}}.s:[[#@LINE+1]] |
| blx thumb_func_with_explicit_notype |
| |
| .section .thumb_caller, "ax", %progbits |
| .thumb |
| .balign 4 |
| .global thumb_caller |
| thumb_caller: |
| b.w .arm_target |
| b.w arm_func_with_notype |
| b.w arm_func_with_explicit_notype |
| b.w .thumb_target |
| b.w thumb_func_with_notype |
| b.w thumb_func_with_explicit_notype |
| beq.w .arm_target |
| beq.w arm_func_with_notype |
| beq.w arm_func_with_explicit_notype |
| beq.w .thumb_target |
| beq.w thumb_func_with_notype |
| beq.w thumb_func_with_explicit_notype |
| // WARN: {{.*}}.o:(.thumb_caller+0x30): branch and link relocation: R_ARM_THM_CALL to STT_SECTION symbol .arm_target ; interworking not performed; {{.*}}.s:[[#@LINE+1]] |
| bl .arm_target |
| // WARN: {{.*}}.o:(.thumb_caller+0x34): branch and link relocation: R_ARM_THM_CALL to non STT_FUNC symbol: arm_func_with_notype interworking not performed; consider using directive '.type arm_func_with_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required; {{.*}}.s:[[#@LINE+1]] |
| bl arm_func_with_notype |
| // WARN: {{.*}}.o:(.thumb_caller+0x38): branch and link relocation: R_ARM_THM_CALL to non STT_FUNC symbol: arm_func_with_explicit_notype interworking not performed; consider using directive '.type arm_func_with_explicit_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required; {{.*}}.s:[[#@LINE+1]] |
| bl arm_func_with_explicit_notype |
| // WARN: {{.*}}.o:(.thumb_caller+0x3c): branch and link relocation: R_ARM_THM_CALL to STT_SECTION symbol .thumb_target ; interworking not performed; {{.*}}.s:[[#@LINE+1]] |
| bl .thumb_target |
| // WARN: {{.*}}.o:(.thumb_caller+0x40): branch and link relocation: R_ARM_THM_CALL to non STT_FUNC symbol: thumb_func_with_notype interworking not performed; consider using directive '.type thumb_func_with_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required; {{.*}}.s:[[#@LINE+1]] |
| bl thumb_func_with_notype |
| // {{.*}}.o:(.thumb_caller+0x44): branch and link relocation: R_ARM_THM_CALL to non STT_FUNC symbol: thumb_func_with_explicit_notype interworking not performed; consider using directive '.type thumb_func_with_explicit_notype, %function' to give symbol type STT_FUNC if interworking between ARM and Thumb is required; {{.*}}.s:[[#@LINE+1]] |
| bl thumb_func_with_explicit_notype |
| blx .arm_target |
| blx arm_func_with_notype |
| blx arm_func_with_explicit_notype |
| blx .thumb_target |
| blx thumb_func_with_notype |
| blx thumb_func_with_explicit_notype |
| |
| // CHECK: 00021008 <_start>: |
| // CHECK-NEXT: 21008: b 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 2100c: b 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21010: b 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21014: b 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21018: b 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 2101c: b 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21020: bl 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21024: bl 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21028: bl 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 2102c: bl 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21030: bl 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21034: bl 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21038: blx 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 2103c: blx 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21040: blx 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21044: blx 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21048: blx 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 2104c: blx 0x21004 <thumb_func_with_notype> |
| |
| // CHECK: 00021050 <thumb_caller>: |
| // CHECK-NEXT: 21050: b.w 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21054: b.w 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21058: b.w 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 2105c: b.w 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21060: b.w 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21064: b.w 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21068: beq.w 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 2106c: beq.w 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21070: beq.w 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21074: beq.w 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21078: beq.w 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 2107c: beq.w 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21080: bl 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21084: bl 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 21088: bl 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 2108c: bl 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21090: bl 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21094: bl 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 21098: blx 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 2109c: blx 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 210a0: blx 0x21000 <arm_func_with_notype> |
| // CHECK-NEXT: 210a4: blx 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 210a8: blx 0x21004 <thumb_func_with_notype> |
| // CHECK-NEXT: 210ac: blx 0x21004 <thumb_func_with_notype> |
