forked from OSchip/llvm-project
127 lines
3.5 KiB
ArmAsm
127 lines
3.5 KiB
ArmAsm
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// RUN: llvm-mc -filetype=obj -triple=armv7a-none-linux-gnueabi %s -o %t
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// RUN: ld.lld %t --no-merge-exidx-entries -o %t2
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// RUN: llvm-objdump -s %t2 | FileCheck --check-prefix CHECK-DUPS %s
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// RUN: ld.lld %t -o %t3
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// RUN: llvm-objdump -s %t3 | FileCheck %s
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// REQUIRES: arm
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// Test that lld can at least remove duplicate .ARM.exidx sections. A more
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// fine grained implementation will be able to remove duplicate entries within
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// a .ARM.exidx section.
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// With duplicate entries
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// CHECK-DUPS: Contents of section .ARM.exidx:
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// CHECK-DUPS-NEXT: 100d4 2c0f0000 01000000 280f0000 01000000
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// CHECK-DUPS-NEXT: 100e4 240f0000 01000000 200f0000 01000000
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// CHECK-DUPS-NEXT: 100f4 1c0f0000 08849780 180f0000 08849780
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// CHECK-DUPS-NEXT: 10104 140f0000 08849780 100f0000 14000000
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// CHECK-DUPS-NEXT: 10114 0c0f0000 18000000 080f0000 01000000
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// CHECK-DUPS-NEXT: Contents of section .ARM.extab:
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// After duplicate entry removal
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// CHECK: Contents of section .ARM.exidx:
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// CHECK-NEXT: 100d4 2c0f0000 01000000 340f0000 08849780
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// CHECK-NEXT: 100e4 380f0000 14000000 340f0000 18000000
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// CHECK-NEXT: 100f4 300f0000 01000000
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// CHECK-NEXT: Contents of section .ARM.extab:
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.syntax unified
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// Expect 1 EXIDX_CANTUNWIND entry.
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.section .text.00, "ax", %progbits
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.globl _start
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_start:
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.fnstart
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bx lr
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.cantunwind
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.fnend
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// Expect .ARM.exidx.text.01 to be identical to .ARM.exidx.text.00
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.section .text.01, "ax", %progbits
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.globl f1
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f1:
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.fnstart
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bx lr
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.cantunwind
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.fnend
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// Expect 2 EXIDX_CANTUNWIND entries, these can be duplicated into
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// .ARM.exid.text.00
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.section .text.02, "ax", %progbits
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.globl f2
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f2:
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.fnstart
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bx lr
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.cantunwind
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.fnend
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.globl f3
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f3:
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.fnstart
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bx lr
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.cantunwind
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.fnend
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// Expect inline unwind instructions, not a duplicate of previous entry.
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.section .text.03, "ax", %progbits
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.global f4
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f4:
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.fnstart
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bx lr
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.save {r7, lr}
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.setfp r7, sp, #0
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.fnend
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// Expect 2 inline unwind entries that are a duplicate of
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// .ARM.exidx.text.03
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.section .text.04, "ax", %progbits
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.global f5
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f5:
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.fnstart
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bx lr
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.save {r7, lr}
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.setfp r7, sp, #0
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.fnend
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.global f6
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f6:
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.fnstart
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bx lr
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.save {r7, lr}
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.setfp r7, sp, #0
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.fnend
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// Expect a section with a reference to an .ARM.extab. Not a duplicate
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// of previous inline table entry.
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.section .text.05, "ax",%progbits
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.global f7
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f7:
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.fnstart
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bx lr
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.personality __gxx_personality_v0
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.handlerdata
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.long 0
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.fnend
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// Expect a reference to an identical .ARM.extab. We do not try to
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// deduplicate references to .ARM.extab sections.
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.section .text.06, "ax",%progbits
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.global f8
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f8:
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.fnstart
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bx lr
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.personality __gxx_personality_v0
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.handlerdata
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.long 0
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.fnend
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// Dummy implementation of personality routines to satisfy reference from
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// exception tables
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.section .text.__gcc_personality_v0, "ax", %progbits
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.global __gxx_personality_v0
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__gxx_personality_v0:
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bx lr
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.section .text.__aeabi_unwind_cpp_pr0, "ax", %progbits
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.global __aeabi_unwind_cpp_pr0
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__aeabi_unwind_cpp_pr0:
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bx lr
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