[llvm-readobj] Dump callgraph section info for ELF #157499
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| ## Tests --call-graph-info prints information from call graph section. | ||
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| # REQUIRES: x86-registered-target | ||
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| # RUN: llvm-mc %s -filetype=obj -triple=x86_64-pc-linux -o %t | ||
| # RUN: llvm-readelf --call-graph-info %t 2>&1 | FileCheck %s --allow-empty -DFILE=%t | ||
| # RUN: llvm-readelf --elf-output-style=LLVM --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=LLVM | ||
| # RUN: llvm-readelf --elf-output-style=JSON --pretty-print --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=JSON | ||
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| ## We do not support GNU format console output for --call-graph-info as it is an LLVM only info. | ||
| # CHECK-NOT: . | ||
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| # LLVM: warning: '[[FILE]]': .llvm.callgraph section has unknown type id for 2 indirect targets. | ||
| # LLVM-NEXT: CallGraph [ | ||
| # LLVM-NEXT: Function { | ||
| # LLVM-NEXT: Offset: 0x2 | ||
| # LLVM-NEXT: Version: 0 | ||
| # LLVM-NEXT: IsIndirectTarget: Yes | ||
| # LLVM-NEXT: TypeId: 0x0 | ||
| # LLVM-NEXT: NumDirectCallees: 1 | ||
| # LLVM-NEXT: DirectCallees [ | ||
| # LLVM-NEXT: { | ||
| # LLVM-NEXT: Offset: 0x13 | ||
| # LLVM-NEXT: } | ||
| # LLVM-NEXT: ] | ||
| # LLVM-NEXT: NumIndirectTargetTypeIDs: 0 | ||
| # LLVM-NEXT: IndirectTypeIDs: [] | ||
| # LLVM-NEXT: } | ||
| # LLVM-NEXT: Function { | ||
| # LLVM-NEXT: Offset: 0x1D | ||
| # LLVM-NEXT: Version: 0 | ||
| # LLVM-NEXT: IsIndirectTarget: Yes | ||
| # LLVM-NEXT: TypeId: 0x0 | ||
| # LLVM-NEXT: NumDirectCallees: 0 | ||
| # LLVM-NEXT: DirectCallees [ | ||
| # LLVM-NEXT: ] | ||
| # LLVM-NEXT: NumIndirectTargetTypeIDs: 1 | ||
| # LLVM-NEXT: IndirectTypeIDs: [0x10] | ||
| # LLVM-NEXT: } | ||
| # LLVM-NEXT: Function { | ||
| # LLVM-NEXT: Offset: 0x38 | ||
| # LLVM-NEXT: Version: 0 | ||
| # LLVM-NEXT: IsIndirectTarget: Yes | ||
| # LLVM-NEXT: TypeId: 0x20 | ||
| # LLVM-NEXT: NumDirectCallees: 0 | ||
| # LLVM-NEXT: DirectCallees [ | ||
| # LLVM-NEXT: ] | ||
| # LLVM-NEXT: NumIndirectTargetTypeIDs: 0 | ||
| # LLVM-NEXT: IndirectTypeIDs: [] | ||
| # LLVM-NEXT: } | ||
| # LLVM-NEXT: ] | ||
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| # JSON: warning: '[[FILE]]': .llvm.callgraph section has unknown type id for 2 indirect targets. | ||
| # JSON: "CallGraph": [ | ||
| # JSON-NEXT: { | ||
| # JSON-NEXT: "Function": { | ||
| # JSON-NEXT: "Offset": 2, | ||
| # JSON-NEXT: "Version": 0, | ||
| # JSON-NEXT: "IsIndirectTarget": true, | ||
| # JSON-NEXT: "TypeId": 0, | ||
| # JSON-NEXT: "NumDirectCallees": 1, | ||
| # JSON-NEXT: "DirectCallees": [ | ||
| # JSON-NEXT: { | ||
| # JSON-NEXT: "Offset": 19 | ||
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| # JSON-NEXT: } | ||
| # JSON-NEXT: ], | ||
| # JSON-NEXT: "NumIndirectTargetTypeIDs": 0, | ||
| # JSON-NEXT: "IndirectTypeIDs": [] | ||
| # JSON-NEXT: } | ||
| # JSON-NEXT: }, | ||
| # JSON-NEXT: { | ||
| # JSON-NEXT: "Function": { | ||
| # JSON-NEXT: "Offset": 29, | ||
| # JSON-NEXT: "Version": 0, | ||
| # JSON-NEXT: "IsIndirectTarget": true, | ||
| # JSON-NEXT: "TypeId": 0, | ||
| # JSON-NEXT: "NumDirectCallees": 0, | ||
| # JSON-NEXT: "DirectCallees": [], | ||
| # JSON-NEXT: "NumIndirectTargetTypeIDs": 1, | ||
| # JSON-NEXT: "IndirectTypeIDs": [ | ||
| # JSON-NEXT: 16 | ||
| # JSON-NEXT: ] | ||
| # JSON-NEXT: } | ||
| # JSON-NEXT: }, | ||
| # JSON-NEXT: { | ||
| # JSON-NEXT: "Function": { | ||
| # JSON-NEXT: "Offset": 56, | ||
| # JSON-NEXT: "Version": 0, | ||
| # JSON-NEXT: "IsIndirectTarget": true, | ||
| # JSON-NEXT: "TypeId": 32, | ||
| # JSON-NEXT: "NumDirectCallees": 0, | ||
| # JSON-NEXT: "DirectCallees": [], | ||
| # JSON-NEXT: "NumIndirectTargetTypeIDs": 0, | ||
| # JSON-NEXT: "IndirectTypeIDs": [] | ||
| # JSON-NEXT: } | ||
| # JSON-NEXT: } | ||
| # JSON-NEXT: ] | ||
| # JSON-NEXT: } | ||
| # JSON-NEXT:] | ||
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| .text | ||
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| .globl foo | ||
| .type foo,@function | ||
| foo: #< foo is at 0. | ||
| .Lfoo_begin: | ||
| callq foo #< direct call is at 5. target is foo (5). | ||
| retq | ||
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| .globl bar | ||
| .type bar,@function | ||
| bar: #< bar is at 6. | ||
| callq *-40(%rbp) #< indirect call is at 9. | ||
| retq | ||
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| .globl baz | ||
| .type baz,@function | ||
| baz: #< baz is at 10 (a). | ||
| retq | ||
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| .globl qux | ||
| .type qux,@function | ||
| qux: #< qux is at 11 (b). | ||
| retq | ||
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| .section .llvm.callgraph,"o",@llvm_call_graph,.text | ||
| .byte 0 #< Format version number. | ||
| .byte 3 #< Flag IsIndirectTarget true | ||
| .quad 0 #< foo()'s address. | ||
| .quad 0 #< TypeID: unknown. | ||
| .byte 1 #< Count of direct callees. | ||
| .quad 5 #< Direct callee foo's address> | ||
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| .byte 0 #< Format version number. | ||
| .byte 5 #< Flag IsIndirectTarget true | ||
| .quad 6 #< bar()'s address. | ||
| .quad 0 #< TypeID: unknown. | ||
| .byte 1 #< Count of indirect target type IDs | ||
| .quad 16 #< Indirect call type id. | ||
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| .byte 0 #< Format version number. | ||
| .byte 1 #< Flag IsIndirectTarget true | ||
| .quad 10 #< baz()'s address. | ||
| .quad 32 #< Indirect target type id. | ||
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| # No call graph section entry for qux. | ||
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| .text | ||
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| Original file line number | Diff line number | Diff line change |
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| ## Tests that --call-graph-info fails if .llvm.callgraph section has invalid | ||
| ## value for flags field. | ||
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| # REQUIRES: x86-registered-target | ||
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| # RUN: llvm-mc %s -filetype=obj -triple=x86_64-pc-linux -o %t | ||
| # RUN: not llvm-readelf --elf-output-style=LLVM --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=ERR | ||
| # RUN: not llvm-readelf --elf-output-style=JSON --pretty-print --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=ERR | ||
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| # ERR: error: 'While reading call graph info's Flags': Unexpected value. Expected [0-7] but found [8] | ||
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| .text | ||
| .globl _Z3foov | ||
| .type _Z3foov,@function | ||
| _Z3foov: | ||
| callq _Z3foov@PLT | ||
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| .section .llvm.callgraph,"o",@llvm_call_graph,.text | ||
| .byte 0 #< Format version number. | ||
| .byte 8 #< Only valid values are 0 to 7 | ||
| # Missing direct callees info | ||
| .text |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| ## Tests that --call-graph-info fails if .llvm.callgraph section has unknown format | ||
| ## version number. | ||
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| # REQUIRES: x86-registered-target | ||
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| # RUN: llvm-mc %s -filetype=obj -triple=x86_64-pc-linux -o %t | ||
| # RUN: not llvm-readelf --elf-output-style=LLVM --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=ERR | ||
| # RUN: not llvm-readelf --elf-output-style=JSON --pretty-print --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=ERR | ||
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| # ERR: error: 'Unknown value': Unknown format version value [1] in .llvm.callgraph section. | ||
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| .text | ||
| .globl _Z3foov | ||
| .type _Z3foov,@function | ||
| _Z3foov: | ||
| callq _Z3foov@PLT | ||
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| .section .llvm.callgraph,"o",@llvm_call_graph,.text | ||
| .byte 1 #< Invalid format version number: the only supported version is 0. | ||
| .text |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| ## Tests that --call-graph-info fails if .llvm.callgraph section has flags | ||
| ## that indicate there are direct calls but the direct call info is missing. | ||
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| # REQUIRES: x86-registered-target | ||
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| # RUN: llvm-mc %s -filetype=obj -triple=x86_64-pc-linux -o %t | ||
| # RUN: not llvm-readelf --elf-output-style=LLVM --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=ERR | ||
| # RUN: not llvm-readelf --elf-output-style=JSON --pretty-print --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=ERR | ||
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| # ERR: error: 'While reading call graph info's [number of direct callsites] for function at [0x2]': unable to decode LEB128 at offset 0x00000012: malformed uleb128, extends past end | ||
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| .text | ||
| .globl _Z3foov | ||
| .type _Z3foov,@function | ||
| _Z3foov: | ||
| callq _Z3foov@PLT | ||
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| .section .llvm.callgraph,"o",@llvm_call_graph,.text | ||
| .byte 0 #< Format version number. | ||
| .byte 3 #< Flag IsIndirectTarget true and has direct calls | ||
| .quad 0 #< Function entry address. | ||
| .quad 0 #< TypeID: unknown. | ||
| # Missing direct callees info | ||
| .text |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| ## Tests that --call-graph-info fails if .llvm.callgraph section does not have | ||
| ## an expected value, e.g., not as much call sites as the given count. | ||
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| # REQUIRES: x86-registered-target | ||
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| # RUN: llvm-mc %s -filetype=obj -triple=x86_64-pc-linux -o %t | ||
| # RUN: not llvm-readelf --elf-output-style=LLVM --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=ERR | ||
| # RUN: not llvm-readelf --elf-output-style=JSON --pretty-print --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t --check-prefix=ERR | ||
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| # ERR: error: 'While reading call graph info's [indirect type ID] for function at [0x2]': unexpected end of data at offset 0x13 while reading [0x13, 0x1b) | ||
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| .text | ||
| .globl _Z3foov | ||
| .type _Z3foov,@function | ||
| _Z3foov: | ||
| callq _Z3foov@PLT | ||
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| .section .llvm.callgraph,"o",@llvm_call_graph,.text | ||
| .byte 0 #< Format version number. | ||
| .byte 4 #< Flags | ||
| .quad 0 #< Function entry address. | ||
| .quad 0 #< Type ID | ||
| .byte 1 #< Indirect call site count that follows. | ||
| #< Missing indirect call entries here. | ||
| .text | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| ## Tests that --call-graph-info warns if there is no .llvm.callgraph section. | ||
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| # REQUIRES: x86-registered-target | ||
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| # RUN: llvm-mc %s -filetype=obj -triple=x86_64-pc-linux -o %t | ||
| # RUN: not llvm-readelf --elf-output-style=LLVM --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t | ||
| # RUN: not llvm-readelf --elf-output-style=JSON --pretty-print --call-graph-info %t 2>&1 | FileCheck %s -DFILE=%t | ||
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| # CHECK: error: 'Missing section': No .llvm.callgraph section found. | ||
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| .text | ||
| .globl _Z3foov | ||
| .type _Z3foov,@function | ||
| _Z3foov: | ||
| callq _Z3foov@PLT |
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Could we convert the test input to use yaml2obj, instead of requiring x86? It looks like the file format is trivial enough that something like a YAML ELF input using ContentArray would be just as descriptive, whilst also allowing more precise control of everything.