1; REQUIRES: bpf-registered-target 2 3;; Verify that llvm-objdump can use .BTF.ext to show CO-RE relocation data. 4 5; RUN: llc --mtriple bpfel %s --filetype=obj -o - | \ 6; RUN: llvm-objdump --no-addresses --no-show-raw-insn -dr - | \ 7; RUN: FileCheck %s 8 9; RUN: llc --mtriple bpfeb %s --filetype=obj -o - | \ 10; RUN: llvm-objdump --no-addresses --no-show-raw-insn -dr - | \ 11; RUN: FileCheck %s 12 13;; Input generated from the following C code: 14;; 15;; #define __pai __attribute__((preserve_access_index)) 16;; 17;; struct buz { 18;; int a; 19;; int b; 20;; } __pai; 21;; 22;; struct foo { 23;; int :4; 24;; int i; 25;; struct buz k[10]; 26;; } __pai; 27;; 28;; struct bar { 29;; struct foo f; 30;; } __pai; 31;; 32;; void * volatile g; 33;; 34;; void root(void) { 35;; struct bar *bar = (void *)0; 36;; g = &bar->f; 37;; g = &bar->f.i; 38;; g = &bar->f.k; 39;; g = &bar->f.k[7].a; 40;; g = &bar->f.k[7].b; 41;; g = &bar[1].f.k[7].b; 42;; } 43;; 44;; Using the following command: 45;; 46;; clang --target=bpf -g -O2 -emit-llvm -S t.c 47 48; CHECK: CO-RE <byte_off> [[[#bar:]]] struct bar::f (0:0) 49; CHECK: CO-RE <byte_off> [[[#bar]]] struct bar::f.i (0:0:0) 50; CHECK: CO-RE <byte_off> [[[#bar]]] struct bar::f.k (0:0:1) 51; CHECK: CO-RE <byte_off> [[[#bar]]] struct bar::f.k[7].a (0:0:1:7:0) 52; CHECK: CO-RE <byte_off> [[[#bar]]] struct bar::f.k[7].b (0:0:1:7:1) 53; CHECK: CO-RE <byte_off> [[[#bar]]] struct bar::[1].f.k[7].b (1:0:1:7:1) 54 55@g = dso_local global ptr null, align 8, !dbg !0 56@"llvm.bar:0:0$0:0" = external global i64, !llvm.preserve.access.index !14 #0 57@"llvm.bar:0:8$0:0:1" = external global i64, !llvm.preserve.access.index !14 #0 58@"llvm.bar:0:4$0:0:0" = external global i64, !llvm.preserve.access.index !14 #0 59@"llvm.bar:0:64$0:0:1:7:0" = external global i64, !llvm.preserve.access.index !14 #0 60@"llvm.bar:0:68$0:0:1:7:1" = external global i64, !llvm.preserve.access.index !14 #0 61@"llvm.bar:0:156$1:0:1:7:1" = external global i64, !llvm.preserve.access.index !14 #0 62 63; Function Attrs: nofree nounwind memory(readwrite, argmem: none) 64define dso_local void @root() local_unnamed_addr #1 !dbg !29 { 65entry: 66 call void @llvm.dbg.value(metadata ptr null, metadata !33, metadata !DIExpression()), !dbg !34 67 %0 = load i64, ptr @"llvm.bar:0:0$0:0", align 8 68 %1 = getelementptr i8, ptr null, i64 %0 69 %2 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 0, ptr %1) 70 store volatile ptr %2, ptr @g, align 8, !dbg !35, !tbaa !36 71 %3 = load i64, ptr @"llvm.bar:0:4$0:0:0", align 8 72 %4 = getelementptr i8, ptr null, i64 %3 73 %5 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 2, ptr %4) 74 store volatile ptr %5, ptr @g, align 8, !dbg !40, !tbaa !36 75 %6 = load i64, ptr @"llvm.bar:0:8$0:0:1", align 8 76 %7 = getelementptr i8, ptr null, i64 %6 77 %8 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 1, ptr %7) 78 store volatile ptr %8, ptr @g, align 8, !dbg !41, !tbaa !36 79 %9 = load i64, ptr @"llvm.bar:0:64$0:0:1:7:0", align 8 80 %10 = getelementptr i8, ptr null, i64 %9 81 %11 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 3, ptr %10) 82 store volatile ptr %11, ptr @g, align 8, !dbg !42, !tbaa !36 83 %12 = load i64, ptr @"llvm.bar:0:68$0:0:1:7:1", align 8 84 %13 = getelementptr i8, ptr null, i64 %12 85 %14 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 4, ptr %13) 86 store volatile ptr %14, ptr @g, align 8, !dbg !43, !tbaa !36 87 %15 = load i64, ptr @"llvm.bar:0:156$1:0:1:7:1", align 8 88 %16 = getelementptr i8, ptr null, i64 %15 89 %17 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 5, ptr %16) 90 store volatile ptr %17, ptr @g, align 8, !dbg !44, !tbaa !36 91 ret void, !dbg !45 92} 93 94; Function Attrs: nofree nosync nounwind memory(none) 95declare ptr @llvm.bpf.passthrough.p0.p0(i32, ptr) #2 96 97; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none) 98declare void @llvm.dbg.value(metadata, metadata, metadata) #3 99 100attributes #0 = { "btf_ama" } 101attributes #1 = { nofree nounwind memory(readwrite, argmem: none) "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" } 102attributes #2 = { nofree nosync nounwind memory(none) } 103attributes #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) } 104 105!llvm.dbg.cu = !{!2} 106!llvm.module.flags = !{!24, !25, !26, !27} 107!llvm.ident = !{!28} 108 109!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 110!1 = distinct !DIGlobalVariable(name: "g", scope: !2, file: !3, line: 18, type: !22, isLocal: false, isDefinition: true) 111!2 = distinct !DICompileUnit(language: DW_LANG_C11, file: !3, producer: "clang version 17.0.0 (/home/eddy/work/llvm-project/clang 2f8c5c0afd1d79a771dd74c8fb1e5bbae6d04eb7)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, retainedTypes: !4, globals: !21, splitDebugInlining: false, nameTableKind: None) 112!3 = !DIFile(filename: "t.c", directory: "/home/eddy/work/tmp", checksumkind: CSK_MD5, checksum: "f7c638151153f385e69bef98e88c80ef") 113!4 = !{!5, !13} 114!5 = !DICompositeType(tag: DW_TAG_array_type, baseType: !6, size: 640, elements: !11) 115!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "buz", file: !3, line: 3, size: 64, elements: !7) 116!7 = !{!8, !10} 117!8 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !6, file: !3, line: 4, baseType: !9, size: 32) 118!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 119!10 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !6, file: !3, line: 5, baseType: !9, size: 32, offset: 32) 120!11 = !{!12} 121!12 = !DISubrange(count: 10) 122!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64) 123!14 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "bar", file: !3, line: 14, size: 704, elements: !15) 124!15 = !{!16} 125!16 = !DIDerivedType(tag: DW_TAG_member, name: "f", scope: !14, file: !3, line: 15, baseType: !17, size: 704) 126!17 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "foo", file: !3, line: 8, size: 704, elements: !18) 127!18 = !{!19, !20} 128!19 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !17, file: !3, line: 10, baseType: !9, size: 32, offset: 32) 129!20 = !DIDerivedType(tag: DW_TAG_member, name: "k", scope: !17, file: !3, line: 11, baseType: !5, size: 640, offset: 64) 130!21 = !{!0} 131!22 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !23) 132!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64) 133!24 = !{i32 7, !"Dwarf Version", i32 5} 134!25 = !{i32 2, !"Debug Info Version", i32 3} 135!26 = !{i32 1, !"wchar_size", i32 4} 136!27 = !{i32 7, !"frame-pointer", i32 2} 137!28 = !{!"clang version 17.0.0 (/home/eddy/work/llvm-project/clang 2f8c5c0afd1d79a771dd74c8fb1e5bbae6d04eb7)"} 138!29 = distinct !DISubprogram(name: "root", scope: !3, file: !3, line: 20, type: !30, scopeLine: 20, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !32) 139!30 = !DISubroutineType(types: !31) 140!31 = !{null} 141!32 = !{!33} 142!33 = !DILocalVariable(name: "bar", scope: !29, file: !3, line: 21, type: !13) 143!34 = !DILocation(line: 0, scope: !29) 144!35 = !DILocation(line: 22, column: 5, scope: !29) 145!36 = !{!37, !37, i64 0} 146!37 = !{!"any pointer", !38, i64 0} 147!38 = !{!"omnipotent char", !39, i64 0} 148!39 = !{!"Simple C/C++ TBAA"} 149!40 = !DILocation(line: 23, column: 5, scope: !29) 150!41 = !DILocation(line: 24, column: 5, scope: !29) 151!42 = !DILocation(line: 25, column: 5, scope: !29) 152!43 = !DILocation(line: 26, column: 5, scope: !29) 153!44 = !DILocation(line: 27, column: 5, scope: !29) 154!45 = !DILocation(line: 28, column: 1, scope: !29) 155