forked from OSchip/llvm-project
65 lines
2.3 KiB
ArmAsm
65 lines
2.3 KiB
ArmAsm
// REQUIRES: arm
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// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv5-none-linux-gnueabi %s -o %t
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// RUN: ld.lld %t -o %t2
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// RUN: llvm-objdump -d %t2 -triple=armv5-none-linux-gnueabi | FileCheck %s
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// RUN: ld.lld %t -o %t3 --shared
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// RUN: llvm-objdump -d %t3 -triple=armv5-none-linux-gnueabi | FileCheck --check-prefix=CHECK-PI %s
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// Test ARM Thumb Interworking on older Arm architectures using Thunks that do
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// not use MOVT/MOVW instructions.
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// For pure interworking (not considering range extension) there is only the
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// case of an Arm B to a Thumb Symbol to consider as in older Arm architectures
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// there is no Thumb B.w that we can intercept with a Thunk and we still assume
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// support for the blx instruction for Thumb BL and BLX to an Arm symbol.
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.arm
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.text
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.syntax unified
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.cpu arm10tdmi
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.text
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.globl _start
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.type _start, %function
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.balign 0x1000
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_start:
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b thumb_func
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bl thumb_func
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blx thumb_func
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bx lr
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// CHECK: _start:
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// CHECK-NEXT: 12000: 03 00 00 ea b #12 <__ARMv5ABSLongThunk_thumb_func>
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// CHECK-NEXT: 12004: 01 00 00 fa blx #4 <thumb_func>
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// CHECK-NEXT: 12008: 00 00 00 fa blx #0 <thumb_func>
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// CHECK-NEXT: 1200c: 1e ff 2f e1 bx lr
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// CHECK: thumb_func:
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// CHECK-NEXT: 12010: 70 47 bx lr
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// CHECK: __ARMv5ABSLongThunk_thumb_func:
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// CHECK-NEXT: 12014: 04 f0 1f e5 ldr pc, [pc, #-4]
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// CHECK: $d:
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// CHECK-NEXT: 12018: 11 20 01 00 .word 0x00012011
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// CHECK-PI: _start:
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// CHECK-PI-NEXT: 2000: 03 00 00 ea b #12 <__ARMV5PILongThunk_thumb_func>
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// CHECK-PI-NEXT: 2004: 01 00 00 fa blx #4 <thumb_func>
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// CHECK-PI-NEXT: 2008: 00 00 00 fa blx #0 <thumb_func>
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// CHECK-PI-NEXT: 200c: 1e ff 2f e1 bx lr
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// CHECK-PI: thumb_func:
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// CHECK-PI-NEXT: 2010: 70 47 bx lr
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// CHECK-PI: __ARMV5PILongThunk_thumb_func:
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// CHECK-PI-NEXT: 2014: 04 c0 9f e5 ldr r12, [pc, #4]
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// CHECK-PI-NEXT: 2018: 0c c0 8f e0 add r12, pc, r12
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// CHECK-PI-NEXT: 201c: 1c ff 2f e1 bx r12
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// CHECK-PI: $d:
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// CHECK-PI-NEXT: 2020: f1 ff ff ff .word 0xfffffff1
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.section .text.1, "ax", %progbits
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.thumb
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.hidden thumb_func
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.type thumb_func, %function
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thumb_func:
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bx lr
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