155 lines · plain
1; REQUIRES: bpf-registered-target2 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 %s8 9; RUN: llc --mtriple bpfeb %s --filetype=obj -o - | \10; RUN: llvm-objdump --no-addresses --no-show-raw-insn -dr - | \11; RUN: FileCheck %s12 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.c47 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 !056@"llvm.bar:0:0$0:0" = external global i64, !llvm.preserve.access.index !14 #057@"llvm.bar:0:8$0:0:1" = external global i64, !llvm.preserve.access.index !14 #058@"llvm.bar:0:4$0:0:0" = external global i64, !llvm.preserve.access.index !14 #059@"llvm.bar:0:64$0:0:1:7:0" = external global i64, !llvm.preserve.access.index !14 #060@"llvm.bar:0:68$0:0:1:7:1" = external global i64, !llvm.preserve.access.index !14 #061@"llvm.bar:0:156$1:0:1:7:1" = external global i64, !llvm.preserve.access.index !14 #062 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 !3467 %0 = load i64, ptr @"llvm.bar:0:0$0:0", align 868 %1 = getelementptr i8, ptr null, i64 %069 %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 !3671 %3 = load i64, ptr @"llvm.bar:0:4$0:0:0", align 872 %4 = getelementptr i8, ptr null, i64 %373 %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 !3675 %6 = load i64, ptr @"llvm.bar:0:8$0:0:1", align 876 %7 = getelementptr i8, ptr null, i64 %677 %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 !3679 %9 = load i64, ptr @"llvm.bar:0:64$0:0:1:7:0", align 880 %10 = getelementptr i8, ptr null, i64 %981 %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 !3683 %12 = load i64, ptr @"llvm.bar:0:68$0:0:1:7:1", align 884 %13 = getelementptr i8, ptr null, i64 %1285 %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 !3687 %15 = load i64, ptr @"llvm.bar:0:156$1:0:1:7:1", align 888 %16 = getelementptr i8, ptr null, i64 %1589 %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 !3691 ret void, !dbg !4592}93 94; Function Attrs: nofree nosync nounwind memory(none)95declare ptr @llvm.bpf.passthrough.p0.p0(i32, ptr) #296 97; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)98declare void @llvm.dbg.value(metadata, metadata, metadata) #399 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