forked from OSchip/llvm-project
53 lines
1.5 KiB
ArmAsm
53 lines
1.5 KiB
ArmAsm
# REQUIRES: arm
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# RUN: rm -rf %t && split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=armv7-a-none-eabi --arm-add-build-attributes %t/a.s -o %t/a.o
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# RUN: ld.lld -pie -T %t/lds %t/a.o -o %t/a
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# RUN: llvm-objdump -d --no-show-raw-insn %t/a | FileCheck %s
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## We create a thunk for dest.
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# CHECK-LABEL: <mid>:
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# CHECK-NEXT: 2010004: b 0x2010008 <__ARMV7PILongThunk_dest>
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# CHECK-EMPTY:
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# CHECK-NEXT: <__ARMV7PILongThunk_dest>:
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# CHECK-NEXT: 2010008: movw r12, #65516
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# CHECK-NEXT: movt r12, #65023
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# CHECK-NEXT: add r12, r12, pc
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# CHECK-NEXT: bx r12
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## The first instruction can reuse the thunk but the second can't.
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## If we reuse the thunk for b, we will get an "out of range" error.
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# CHECK-LABEL: <high>:
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# CHECK-NEXT: 4010000: bl 0x2010008 <__ARMV7PILongThunk_dest>
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# CHECK-NEXT: b 0x4010008 <__ARMV7PILongThunk_dest>
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# CHECK-EMPTY:
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# CHECK-NEXT: <__ARMV7PILongThunk_dest>:
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# CHECK-NEXT: 4010008: movw r12, #65516
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# CHECK-NEXT: movt r12, #64511
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# CHECK-NEXT: add r12, r12, pc
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# CHECK-NEXT: bx r12
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#--- a.s
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.section .text_low, "ax", %progbits
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.globl _start
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_start:
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nop
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dest:
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bx lr
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.section .text_mid, "ax", %progbits
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mid:
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b dest
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.section .text_high, "ax", %progbits
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high:
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bl dest
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b dest
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#--- lds
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SECTIONS {
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.text_low 0x10000: { *(.text_low) }
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.text_mid 0x2010004 : { *(.text_mid) }
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.text_high 0x4010000 : { *(.text_high) }
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}
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