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