| // REQUIRES: arm |
| // RUN: llvm-mc --triple=armv7a-linux-gnueabihf -arm-add-build-attributes -filetype=obj -o %t.o %s |
| // RUN: ld.lld %t.o -o %t |
| // RUN: llvm-objdump -triple armv7a-none-linux-gnueabi -d --no-show-raw-insn %t |
| |
| /// Non-preemptible ifuncs are called via a PLT entry which is always Arm |
| /// state, expect the ARM callers to go direct to the PLT entry, Thumb |
| /// branches are indirected via state change thunks, the bl is changed to blx. |
| |
| .syntax unified |
| .text |
| .balign 0x1000 |
| .type foo STT_GNU_IFUNC |
| .globl foo |
| foo: |
| bx lr |
| |
| .section .text.1, "ax", %progbits |
| .arm |
| .global _start |
| _start: |
| b foo |
| bl foo |
| |
| .section .text.2, "ax", %progbits |
| .thumb |
| .global thumb_caller |
| thumb_caller: |
| b foo |
| b.w foo |
| bl foo |
| |
| // CHECK: 00012004 _start: |
| // CHECK-NEXT: b #36 |
| // CHECK-NEXT: bl #32 |
| |
| // CHECK: 0001200c thumb_caller: |
| // CHECK-NEXT: b.w #8 |
| // CHECK-NEXT: b.w #4 |
| // CHECK-NEXT: blx #24 |
| |
| // CHECK: 00012018 __Thumbv7ABSLongThunk_foo: |
| // CHECK-NEXT: movw r12, #8240 |
| // CHECK-NEXT: movt r12, #1 |
| // CHECK-NEXT: bx r12 |
| |
| // CHECK: Disassembly of section .iplt: |
| |
| // CHECK: 00012030 $a: |
| // CHECK-NEXT: add r12, pc, #0, #12 |
| // CHECK-NEXT: add r12, r12, #4096 |
| // CHECK-NEXT: ldr pc, [r12, #8]! |
