forked from OSchip/llvm-project
53 lines
1.2 KiB
ArmAsm
53 lines
1.2 KiB
ArmAsm
// 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]!
|