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 %t
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// RUN: ld.lld %t --shared -o %t.so
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// RUN: llvm-mc -arm-add-build-attributes -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t2
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// RUN: ld.lld %t2 %t.so -o %t3
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// RUN: llvm-objdump -d -triple=armv7a-none-linux-gnueabi -start-address=69632 -stop-address=69664 %t3 | 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: 11000: 00 00 00 ea b #0 <__ARMv7ABSLongThunk_undefined_weak_we_expect_a_plt_entry_for>
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// CHECK-NEXT: 11004: 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: 11008: 40 c0 01 e3 movw r12, #4160
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// CHECK-NEXT: 1100c: 01 c2 40 e3 movt r12, #513
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// CHECK-NEXT: 11010: 1c ff 2f e1 bx r12
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// CHECK: __ARMv7ABSLongThunk_bar2:
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// CHECK-NEXT: 11014: 50 c0 01 e3 movw r12, #4176
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// CHECK-NEXT: 11018: 01 c2 40 e3 movt r12, #513
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// CHECK-NEXT: 1101c: 1c ff 2f e1 bx r12
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