// REQUIRES: arm
// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv5-none-linux-gnueabi %s -o %t
// RUN: ld.lld %t -o %t2
// RUN: llvm-objdump --no-print-imm-hex -d %t2 --triple=armv5-none-linux-gnueabi | FileCheck %s
// RUN: ld.lld %t -o %t3 --shared
// RUN: llvm-objdump --no-print-imm-hex -d %t3 --triple=armv5-none-linux-gnueabi | FileCheck --check-prefix=CHECK-PI %s

// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv5eb-none-linux-gnueabi %s -o %t
// RUN: ld.lld %t -o %t2
// RUN: llvm-objdump --no-print-imm-hex -d %t2 --triple=armv5eb-none-linux-gnueabi | FileCheck --check-prefix=CHECK-EB %s
// RUN: ld.lld %t -o %t3 --shared
// RUN: llvm-objdump --no-print-imm-hex -d %t3 --triple=armv5eb-none-linux-gnueabi | FileCheck --check-prefix=CHECK-EB-PI %s

// Test ARM Thumb Interworking on older Arm architectures using Thunks that do
// not use MOVT/MOVW instructions.
// For pure interworking (not considering range extension) there is only the
// case of an Arm B to a Thumb Symbol to consider as in older Arm architectures
// there is no Thumb B.w that we can intercept with a Thunk and we still assume
// support for the blx instruction for Thumb BL and BLX to an Arm symbol.
        .arm
        .text
        .syntax unified
        .cpu    arm10tdmi

        .text
        .globl _start
        .type _start, %function
        .balign 0x1000
_start:
        b thumb_func
        bl thumb_func
        blx thumb_func
        bx lr

// CHECK: <_start>:
// CHECK-NEXT: 21000: ea000003        b       0x21014 <__ARMv5LongLdrPcThunk_thumb_func>
// CHECK-NEXT: 21004: fa000001        blx     0x21010 <thumb_func>
// CHECK-NEXT: 21008: fa000000        blx     0x21010 <thumb_func>
// CHECK-NEXT: 2100c: e12fff1e        bx      lr

// CHECK: <thumb_func>:
// CHECK-NEXT: 21010: 4770    bx      lr

// CHECK: <__ARMv5LongLdrPcThunk_thumb_func>:
// CHECK-NEXT: 21014: e51ff004        ldr     pc, [pc, #-4]
// CHECK-NEXT: 21018: 11 10 02 00     .word   0x00021011

// CHECK-EB: <_start>:
// CHECK-EB-NEXT: 21000: ea000003        b       0x21014 <__ARMv5LongLdrPcThunk_thumb_func>
// CHECK-EB-NEXT: 21004: fa000001        blx     0x21010 <thumb_func>
// CHECK-EB-NEXT: 21008: fa000000        blx     0x21010 <thumb_func>
// CHECK-EB-NEXT: 2100c: e12fff1e        bx      lr

// CHECK-EB: <thumb_func>:
// CHECK-EB-NEXT: 21010: 4770    bx      lr

// CHECK-EB: <__ARMv5LongLdrPcThunk_thumb_func>:
// CHECK-EB-NEXT: 21014: e51ff004        ldr     pc, [pc, #-4]
// CHECK-EB-NEXT: 21018: 00 02 10 11     .word   0x00021011

// CHECK-PI: <_start>:
// CHECK-PI-NEXT: 11000: ea000003        b       0x11014 <__ARMv4PILongBXThunk_thumb_func>
// CHECK-PI-NEXT: 11004: fa000001        blx     0x11010 <thumb_func>
// CHECK-PI-NEXT: 11008: fa000000        blx     0x11010 <thumb_func>
// CHECK-PI-NEXT: 1100c: e12fff1e        bx      lr

// CHECK-PI: <thumb_func>:
// CHECK-PI-NEXT: 11010: 4770    bx      lr

// CHECK-PI: <__ARMv4PILongBXThunk_thumb_func>:
// CHECK-PI-NEXT: 11014: e59fc004        ldr     r12, [pc, #4]
// CHECK-PI-NEXT: 11018: e08fc00c        add     r12, pc, r12
// CHECK-PI-NEXT: 1101c: e12fff1c        bx      r12
// CHECK-PI-NEXT: 11020: f1 ff ff ff     .word   0xfffffff1

// CHECK-EB-PI: <_start>:
// CHECK-EB-PI-NEXT: 11000: ea000003        b       0x11014 <__ARMv4PILongBXThunk_thumb_func>
// CHECK-EB-PI-NEXT: 11004: fa000001        blx     0x11010 <thumb_func>
// CHECK-EB-PI-NEXT: 11008: fa000000        blx     0x11010 <thumb_func>
// CHECK-EB-PI-NEXT: 1100c: e12fff1e        bx      lr

// CHECK-EB-PI: <thumb_func>:
// CHECK-EB-PI-NEXT: 11010: 4770    bx      lr

// CHECK-EB-PI: <__ARMv4PILongBXThunk_thumb_func>:
// CHECK-EB-PI-NEXT: 11014: e59fc004        ldr     r12, [pc, #4]
// CHECK-EB-PI-NEXT: 11018: e08fc00c        add     r12, pc, r12
// CHECK-EB-PI-NEXT: 1101c: e12fff1c        bx      r12
// CHECK-EB-PI-NEXT: 11020: ff ff ff f1     .word   0xfffffff1
        .section .text.1, "ax", %progbits
        .thumb
        .hidden thumb_func
        .type thumb_func, %function
thumb_func:
        bx lr
