derek.holloway
7502bf64a4
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68 lines
2.6 KiB
ArmAsm
68 lines
2.6 KiB
ArmAsm
// REQUIRES: aarch64
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// RUN: rm -rf %t && split-file %s %t && cd %t
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// RUN: llvm-mc -triple=aarch64 -filetype=obj %s -o %t11.o
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// RUN: llvm-mc -triple=aarch64 -filetype=obj merged-property.s -o %t12.o
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// RUN: llvm-mc -triple=aarch64 -filetype=obj merged-property2.s -o %t13.o
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// RUN: ld.lld -r %t11.o %t12.o %t13.o -o %t.merged1.o
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// RUN: llvm-readelf -n %t.merged1.o | FileCheck %s --check-prefix=NOTE-MIXED
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/// This test verifies merging of AArch64 build attributes and GNU property notes.
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/// Three object files are combined: one with build attributes (PAuth information, BTI, PAC, GCS),
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/// and two with GNU property notes encoding the same feature bits.
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/// PAuth ABI info is provided in one of the files and it is expected to be preserved in the merged output.
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// NOTE-MIXED: Displaying notes found in: .note.gnu.property
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// NOTE-MIXED-NEXT: Owner Data size Description
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// NOTE-MIXED-NEXT: GNU 0x00000028 NT_GNU_PROPERTY_TYPE_0 (property note)
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// NOTE-MIXED-NEXT: Properties: aarch64 feature: BTI, PAC
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// NOTE-MIXED-NEXT: AArch64 PAuth ABI core info: platform 0x31 (unknown), version 0x13
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// CHECK: .note.gnu.property
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// CHECK-NOT: .ARM.attributes
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.aeabi_subsection aeabi_pauthabi, required, uleb128
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.aeabi_attribute Tag_PAuth_Platform, 49
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.aeabi_attribute Tag_PAuth_Schema, 19
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.aeabi_subsection aeabi_feature_and_bits, optional, uleb128
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.aeabi_attribute Tag_Feature_BTI, 1
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.aeabi_attribute Tag_Feature_PAC, 1
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.aeabi_attribute Tag_Feature_GCS, 1
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//--- merged-property.s
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.section ".note.gnu.property", "a"
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.long 0x4 // Name length is always 4 ("GNU")
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.long end - begin // Data length
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.long 0x5 // Type: NT_GNU_PROPERTY_TYPE_0
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.asciz "GNU" // Name
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.p2align 0x3
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begin:
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.long 0xc0000000 // GNU_PROPERTY_AARCH64_FEATURE_1_AND
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.long 0x4
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.long 0x7 // pr_data: BTI (1), PAC (2), GCS (4) = 0b111 = 7
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.long 0x0
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// PAuth ABI property note
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.long 0xc0000001 // GNU_PROPERTY_AARCH64_FEATURE_PAUTH
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.long 0x10 // Data length
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.quad 0x31 // PAuth ABI platform
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.quad 0x13 // PAuth ABI version
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.p2align 0x3 // Align to 8 byte for 64 bit
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end:
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//--- merged-property2.s
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.section .note.gnu.property, "a"
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.align 0x4
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.long 0x4 // Name length is always 4 ("GNU")
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.long end2 - begin2 // Data length
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.long 0x5 // Type: NT_GNU_PROPERTY_TYPE_0
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.asciz "GNU" // Name
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begin2:
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.align 0x4
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.long 0xc0000000 // Type: GNU_PROPERTY_AARCH64_FEATURE_1_AND
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.long 0x4 // Data length
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.long 0x7 // pr_data: BTI (1), PAC (2), GCS (4) = 0b111 = 7
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.long 0x0
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end2:
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