[llvm] r353286 - [DebugInfo][llvm-symbolizer]Add some tests for edge cases when symbolizing
James Henderson via llvm-commits
llvm-commits at lists.llvm.org
Wed Feb 6 02:13:14 PST 2019
Author: jhenderson
Date: Wed Feb 6 02:13:14 2019
New Revision: 353286
URL: http://llvm.org/viewvc/llvm-project?rev=353286&view=rev
Log:
[DebugInfo][llvm-symbolizer]Add some tests for edge cases when symbolizing
This patch adds half a dozen new tests that test various edge cases in
the behaviour of the symbolizer and DWARF data parsing. All of them test
the current behaviour.
Reviewed by: JDevlieghere, aprantl
Differential Revision: https://reviews.llvm.org/D57741
Added:
llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.c
llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.elf.x86_64 (with props)
llvm/trunk/test/DebugInfo/symbolize-64bit-address.test
llvm/trunk/test/DebugInfo/symbolize-absolute-path-in-debug-line.s
llvm/trunk/test/DebugInfo/symbolize-no-debug-str.test
llvm/trunk/test/DebugInfo/symbolize-shared-abbrev.s
llvm/trunk/test/DebugInfo/symbolize-stripped-sections.test
llvm/trunk/test/tools/llvm-symbolizer/invalid-input-address.test
Added: llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.c
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.c?rev=353286&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.c (added)
+++ llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.c Wed Feb 6 02:13:14 2019
@@ -0,0 +1,6 @@
+int _start() {
+ return 0;
+}
+
+// Compile with "clang --target=x86_64-pc-linux -c -g symbolize-64bit-addr.c".
+// Link with "ld.lld -Ttext=0xffffffff00000000 symbolize-64bit-addr.o -o symbolize-64bit-addr.elf.x86_64".
Added: llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.elf.x86_64
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.elf.x86_64?rev=353286&view=auto
==============================================================================
Binary file - no diff available.
Propchange: llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.elf.x86_64
------------------------------------------------------------------------------
svn:executable = *
Propchange: llvm/trunk/test/DebugInfo/Inputs/symbolize-64bit-addr.elf.x86_64
------------------------------------------------------------------------------
svn:mime-type = application/octet-stream
Added: llvm/trunk/test/DebugInfo/symbolize-64bit-address.test
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/symbolize-64bit-address.test?rev=353286&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/symbolize-64bit-address.test (added)
+++ llvm/trunk/test/DebugInfo/symbolize-64bit-address.test Wed Feb 6 02:13:14 2019
@@ -0,0 +1,6 @@
+RUN: llvm-symbolizer 0xffffffff00000000 -a --obj=%p/Inputs/symbolize-64bit-addr.elf.x86_64 \
+RUN: | FileCheck %s
+
+CHECK: 0xffffffff00000000
+CHECK-NEXT: _start
+CHECK-NEXT: symbolize-64bit-addr.c:1:0
Added: llvm/trunk/test/DebugInfo/symbolize-absolute-path-in-debug-line.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/symbolize-absolute-path-in-debug-line.s?rev=353286&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/symbolize-absolute-path-in-debug-line.s (added)
+++ llvm/trunk/test/DebugInfo/symbolize-absolute-path-in-debug-line.s Wed Feb 6 02:13:14 2019
@@ -0,0 +1,106 @@
+# Create .debug_line containing absolute path in filename. Show that the path is sensibly printed/found/etc.
+# REQUIRES: x86-registered-target
+
+# RUN: sed s!FILEPATH!%/s! %s > %t.s
+# RUN: llvm-mc --filetype=obj --triple=x86_64-pc-linux %t.s -o %t.o
+# RUN: llvm-symbolizer --obj=%t.o 0 | FileCheck %s -DPATH=%/s
+
+# CHECK: {{^}}[[PATH]]:1:0
+
+.type _start, at function
+_start:
+.Lfunc_begin0:
+ ret
+.Lfunc_end0:
+
+.section .debug_str,"MS", at progbits,1
+.Linfo_string1:
+ .asciz "test.c"
+.Linfo_string2:
+ .asciz "/some/dir"
+.Linfo_string3:
+ .asciz "_start"
+
+.section .debug_abbrev,"", at progbits
+ .byte 1 # Abbreviation Code
+ .byte 17 # DW_TAG_compile_unit
+ .byte 1 # DW_CHILDREN_yes
+ .byte 3 # DW_AT_name
+ .byte 14 # DW_FORM_strp
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 27 # DW_AT_comp_dir
+ .byte 14 # DW_FORM_strp
+ .byte 17 # DW_AT_low_pc
+ .byte 1 # DW_FORM_addr
+ .byte 18 # DW_AT_high_pc
+ .byte 6 # DW_FORM_data4
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 2 # Abbreviation Code
+ .byte 46 # DW_TAG_subprogram
+ .byte 0 # DW_CHILDREN_no
+ .byte 17 # DW_AT_low_pc
+ .byte 1 # DW_FORM_addr
+ .byte 18 # DW_AT_high_pc
+ .byte 6 # DW_FORM_data4
+ .byte 3 # DW_AT_name
+ .byte 14 # DW_FORM_strp
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 63 # DW_AT_external
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 0 # EOM(3)
+ .section .debug_info,"", at progbits
+ .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
+.Ldebug_info_start0:
+ .short 4 # DWARF version number
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .byte 8 # Address Size (in bytes)
+ .byte 1 # Abbrev [1] 0xb:0x35 DW_TAG_compile_unit
+ .long .Linfo_string1 # DW_AT_name
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .long .Linfo_string2 # DW_AT_comp_dir
+ .quad .Lfunc_begin0 # DW_AT_low_pc
+ .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
+ .byte 2 # Abbrev [2] 0x2a:0x15 DW_TAG_subprogram
+ .quad .Lfunc_begin0 # DW_AT_low_pc
+ .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
+ .long .Linfo_string3 # DW_AT_name
+ .byte 1 # DW_AT_decl_file
+ .byte 1 # DW_AT_decl_line
+ # DW_AT_external
+ .byte 0 # End Of Children Mark
+.Ldebug_info_end0:
+
+# Hand-written .debug_line to allow replacing in the absolute path
+# into the filename table at runtime.
+.section .debug_line,"", at progbits
+.Lline_table_start0:
+ .long .Ltable_end - .Ltable_start # unit length
+.Ltable_start:
+ .short 4 # version
+ .long .Lheader_end - .Lheader_start # header length
+.Lheader_start:
+ .byte 1 # min instruction length
+ .byte 1 # max ops per instruction
+ .byte 1 # default is_stmt
+ .byte -5 # line base
+ .byte 14 # line range
+ .byte 13 # opcode base
+ .byte 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1 # standard opcode lengths
+ .byte 0 # directory table
+ .asciz "FILEPATH" # filename table
+ .byte 0, 0, 0
+ .byte 0
+.Lheader_end:
+ .byte 0, 9, 2 # DW_LNE_set_address
+ .quad .Lfunc_begin0
+ .byte 1 # DW_LNS_copy
+ .byte 33 # +1 address, +1 line
+ .byte 0, 1, 1 # DW_LNE_end_sequence
+.Ltable_end:
Added: llvm/trunk/test/DebugInfo/symbolize-no-debug-str.test
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/symbolize-no-debug-str.test?rev=353286&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/symbolize-no-debug-str.test (added)
+++ llvm/trunk/test/DebugInfo/symbolize-no-debug-str.test Wed Feb 6 02:13:14 2019
@@ -0,0 +1,9 @@
+RUN: llvm-objcopy -R .debug_str %p/Inputs/llvm-symbolizer-test.elf-x86-64 %t.elf
+RUN: llvm-symbolizer --functions=linkage --obj=%t.elf 0x401140 | FileCheck %s --check-prefix=LINKAGE
+RUN: llvm-symbolizer --functions=short --obj=%t.elf 0x401140 | FileCheck %s --check-prefix=SHORT
+
+LINKAGE: main
+LINKAGE-NEXT: {{^}}llvm-symbolizer-test.c:10:0
+
+SHORT: ??
+SHORT-NEXT: {{^}}llvm-symbolizer-test.c:10:0
Added: llvm/trunk/test/DebugInfo/symbolize-shared-abbrev.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/symbolize-shared-abbrev.s?rev=353286&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/symbolize-shared-abbrev.s (added)
+++ llvm/trunk/test/DebugInfo/symbolize-shared-abbrev.s Wed Feb 6 02:13:14 2019
@@ -0,0 +1,162 @@
+# Show that multiple CUs can have a single common .debug_abbrev table. This can
+# occur due to e.g. LTO.
+
+# REQUIRES: x86-registered-target
+
+# RUN: llvm-mc --filetype=obj --triple=x86_64-pc-linux %s -o %t.o
+# RUN: llvm-symbolizer --obj=%t.o 0 16 --functions=short | FileCheck %s
+
+# CHECK: foo
+# CHECK-NEXT: foo.c:1:0
+
+# CHECK: bar
+# CHECK-NEXT: bar.c:2:0
+
+.global foo
+.type foo, at function
+foo:
+.Lfunc_begin0:
+ .file 1 "." "foo.c"
+ .loc 1 1 0
+ ret
+.Lfunc_end0:
+
+.global bar
+.p2align 4, 0x90
+.type bar, at function
+bar:
+.Lfunc_begin1:
+ .file 2 "." "bar.c"
+ .loc 2 2 0
+ ret
+.Lfunc_end1:
+
+ .section .debug_str,"MS", at progbits,1
+.Linfo_string1:
+ .asciz "foo.c"
+.Linfo_string2:
+ .asciz "."
+.Linfo_string3:
+ .asciz "foo"
+.Linfo_string4:
+ .asciz "bar.c"
+.Linfo_string5:
+ .asciz "bar"
+
+ # Regular .debug_abbrev section with CU and subprogram, but duplicated, with second
+ # half reordered slightly, to show that the correct abbrev is being referenced.
+ .section .debug_abbrev,"", at progbits
+ .byte 1 # Abbreviation Code
+ .byte 17 # DW_TAG_compile_unit
+ .byte 1 # DW_CHILDREN_yes
+ .byte 3 # DW_AT_name
+ .byte 14 # DW_FORM_strp
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 27 # DW_AT_comp_dir
+ .byte 14 # DW_FORM_strp
+ .byte 17 # DW_AT_low_pc
+ .byte 1 # DW_FORM_addr
+ .byte 18 # DW_AT_high_pc
+ .byte 6 # DW_FORM_data4
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 2 # Abbreviation Code
+ .byte 46 # DW_TAG_subprogram
+ .byte 0 # DW_CHILDREN_no
+ .byte 17 # DW_AT_low_pc
+ .byte 1 # DW_FORM_addr
+ .byte 18 # DW_AT_high_pc
+ .byte 6 # DW_FORM_data4
+ .byte 3 # DW_AT_name
+ .byte 14 # DW_FORM_strp
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 63 # DW_AT_external
+ .byte 25 # DW_FORM_flag_present
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ # Second-half starts here.
+ .byte 3 # Abbreviation Code
+ .byte 17 # DW_TAG_compile_unit
+ .byte 1 # DW_CHILDREN_yes
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 27 # DW_AT_comp_dir
+ .byte 14 # DW_FORM_strp
+ .byte 17 # DW_AT_low_pc
+ .byte 1 # DW_FORM_addr
+ .byte 18 # DW_AT_high_pc
+ .byte 6 # DW_FORM_data4
+ .byte 3 # DW_AT_name
+ .byte 14 # DW_FORM_strp
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 4 # Abbreviation Code
+ .byte 46 # DW_TAG_subprogram
+ .byte 0 # DW_CHILDREN_no
+ .byte 17 # DW_AT_low_pc
+ .byte 1 # DW_FORM_addr
+ .byte 18 # DW_AT_high_pc
+ .byte 6 # DW_FORM_data4
+ .byte 58 # DW_AT_decl_file
+ .byte 11 # DW_FORM_data1
+ .byte 59 # DW_AT_decl_line
+ .byte 11 # DW_FORM_data1
+ .byte 63 # DW_AT_external
+ .byte 25 # DW_FORM_flag_present
+ .byte 3 # DW_AT_name
+ .byte 14 # DW_FORM_strp
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 0 # EOM(3)
+
+ .section .debug_info,"", at progbits
+ # First CU table.
+ .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
+.Ldebug_info_start0:
+ .short 4 # DWARF version number
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .byte 8 # Address Size (in bytes)
+ .byte 1 # Abbrev [1] 0xb:0x35 DW_TAG_compile_unit
+ .long .Linfo_string1 # DW_AT_name
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .long .Linfo_string2 # DW_AT_comp_dir
+ .quad .Lfunc_begin0 # DW_AT_low_pc
+ .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
+ .byte 2 # Abbrev [2] 0x2a:0x15 DW_TAG_subprogram
+ .quad .Lfunc_begin0 # DW_AT_low_pc
+ .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
+ .long .Linfo_string3 # DW_AT_name
+ .byte 1 # DW_AT_decl_file
+ .byte 1 # DW_AT_decl_line
+ # DW_AT_external
+ .byte 0 # End Of Children Mark
+.Ldebug_info_end0:
+
+ # Second CU table.
+ .long .Ldebug_info_end1-.Ldebug_info_start1 # Length of Unit
+.Ldebug_info_start1:
+ .short 4 # DWARF version number
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .byte 8 # Address Size (in bytes)
+ .byte 3 # Abbrev [1] 0xb:0x35 DW_TAG_compile_unit
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .long .Linfo_string2 # DW_AT_comp_dir
+ .quad .Lfunc_begin1 # DW_AT_low_pc
+ .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
+ .long .Linfo_string4 # DW_AT_name
+ .byte 4 # Abbrev [2] 0x2a:0x15 DW_TAG_subprogram
+ .quad .Lfunc_begin1 # DW_AT_low_pc
+ .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
+ .byte 1 # DW_AT_decl_file
+ .byte 1 # DW_AT_decl_line
+ # DW_AT_external
+ .long .Linfo_string5 # DW_AT_name
+ .byte 0 # End Of Children Mark
+.Ldebug_info_end1:
+
+ .section .debug_line,"", at progbits
+.Lline_table_start0:
Added: llvm/trunk/test/DebugInfo/symbolize-stripped-sections.test
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/symbolize-stripped-sections.test?rev=353286&view=auto
==============================================================================
--- llvm/trunk/test/DebugInfo/symbolize-stripped-sections.test (added)
+++ llvm/trunk/test/DebugInfo/symbolize-stripped-sections.test Wed Feb 6 02:13:14 2019
@@ -0,0 +1,11 @@
+RUN: llvm-symbolizer --obj=%p/Inputs/llvm-symbolizer-test.elf-x86-64 0x401140 \
+RUN: | FileCheck %s --check-prefix=UNSTRIPPED
+
+RUN: llvm-objcopy --strip-sections %p/Inputs/llvm-symbolizer-test.elf-x86-64 %t.elf
+RUN: llvm-symbolizer --obj=%t.elf 0x401140 | FileCheck %s --check-prefix=STRIPPED
+
+UNSTRIPPED: main
+UNSTRIPPED-NEXT: llvm-symbolizer-test.c:10:0
+
+STRIPPED: ??
+STRIPPED-NEXT: ??:0:0
Added: llvm/trunk/test/tools/llvm-symbolizer/invalid-input-address.test
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-symbolizer/invalid-input-address.test?rev=353286&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-symbolizer/invalid-input-address.test (added)
+++ llvm/trunk/test/tools/llvm-symbolizer/invalid-input-address.test Wed Feb 6 02:13:14 2019
@@ -0,0 +1,7 @@
+# Use address that can't fit in a 64-bit number. Show that llvm-symbolizer
+# simply echoes it as per other malformed input addresses.
+RUN: llvm-symbolizer --obj=addr.exe 0x10000000000000000 | FileCheck %s
+
+CHECK-NOT: {{.}}
+CHECK: 0x10000000000000000
+CHECK-NOT: {{.}}
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