forked from OSchip/llvm-project
37 lines
1.7 KiB
ArmAsm
37 lines
1.7 KiB
ArmAsm
// REQUIRES: arm
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// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %S/Inputs/arm-shared.s -o %t1.o
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// RUN: ld.lld %t1.o --shared -soname=t1.so -o %t1.so
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// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t.o
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// RUN: ld.lld %t.o %t1.so -o %t
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// RUN: llvm-objdump -d --triple=armv7a-none-linux-gnueabi --start-address=0x201e4 --stop-address=0x20204 %t | FileCheck %s
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/// When we are dynamic linking, undefined weak references have a PLT entry so
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/// we must create a thunk for the branch to the PLT entry.
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.text
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.globl bar2
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.weak undefined_weak_we_expect_a_plt_entry_for
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_start:
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.globl _start
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.type _start, %function
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b undefined_weak_we_expect_a_plt_entry_for
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bl bar2
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/// Create 32 Mb gap between the call to the weak reference and the PLT so that
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/// the b and bl need a range-extension thunk.
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.section .text.1, "ax", %progbits
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.space 32 * 1024 * 1024
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// CHECK: Disassembly of section .text:
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// CHECK-EMPTY:
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// CHECK-NEXT: <_start>:
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// CHECK-NEXT: 201e4: 00 00 00 ea b #0 <__ARMv7ABSLongThunk_undefined_weak_we_expect_a_plt_entry_for>
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// CHECK-NEXT: 201e8: 02 00 00 eb bl #8 <__ARMv7ABSLongThunk_bar2>
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// CHECK: <__ARMv7ABSLongThunk_undefined_weak_we_expect_a_plt_entry_for>:
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// CHECK-NEXT: 201ec: 30 c2 00 e3 movw r12, #560
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// CHECK-NEXT: 201f0: 02 c2 40 e3 movt r12, #514
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// CHECK-NEXT: 201f4: 1c ff 2f e1 bx r12
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// CHECK: <__ARMv7ABSLongThunk_bar2>:
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// CHECK-NEXT: 201f8: 40 c2 00 e3 movw r12, #576
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// CHECK-NEXT: 201fc: 02 c2 40 e3 movt r12, #514
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// CHECK-NEXT: 20200: 1c ff 2f e1 bx r12
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