maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[DWARF][BOLT] Handle getBinaryFunctionContainingAddress returning nullptr for DW_TAG_call_site 

DW_TAG_call_site/DW_AT_call_return_pc can contain address that is not in any
function. In this case getBinaryFunctionContainingAddress returns nullptr. For
this case preserving original address.

Reviewed By: rafauler

Differential Revision: https://reviews.llvm.org/D132057
This commit is contained in:
Alexander Yermolovich 2022-08-17 16:04:34 -07:00
parent f1b5d30f15
commit b786e01f93
4 changed files with 614 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
bolt/lib/Rewrite/DWARFRewriter.cpp
View File

@ -485,10 +485,16 @@ void DWARFRewriter::updateUnitDebugInfo(
Optional<uint64_t> Address = AttrVal.V.getAsAddress();
const BinaryFunction *Function =
BC.getBinaryFunctionContainingAddress(*Address);
const uint64_t UpdatedAddress =
Function->translateInputToOutputAddress(*Address);
const uint32_t Index =
AddrWriter->getIndexFromAddress(UpdatedAddress, Unit);
uint32_t Index = 0;
// Preserving original address instead of using whatever ends up at this
// index.
if (!Function) {
Index = AddrWriter->getIndexFromAddress(*Address, Unit);
} else {
const uint64_t UpdatedAddress =
Function->translateInputToOutputAddress(*Address);
Index = AddrWriter->getIndexFromAddress(UpdatedAddress, Unit);
}
if (AttrVal.V.getForm() == dwarf::DW_FORM_addrx)
DebugInfoPatcher.addUDataPatch(AttrVal.Offset, Index, AttrVal.Size);
else

202
bolt/test/X86/Inputs/dwarf5-call-pc-function-null-check-helper.s Normal file
View File

@ -0,0 +1,202 @@
# clang++ main.cpp -g2 -O2 -S
# int helper(int z_, int d_) {
# return z_ + d_;
# }
.text
.file "helper.cpp"
.globl _Z6helperii # -- Begin function _Z6helperii
.p2align 4, 0x90
.type _Z6helperii,@function
_Z6helperii: # @_Z6helperii
.Lfunc_begin0:
.file 0 "." "helper.cpp" md5 0x8020e02b87876b529416442978378ed0
.loc 0 1 0 # helper.cpp:1:0
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: helper:z_ <- $edi
#DEBUG_VALUE: helper:d_ <- $esi
# kill: def $esi killed $esi def $rsi
# kill: def $edi killed $edi def $rdi
.loc 0 2 13 prologue_end # helper.cpp:2:13
leal (%rdi,%rsi), %eax
.loc 0 2 3 is_stmt 0 # helper.cpp:2:3
retq
.Ltmp0:
.Lfunc_end0:
.size _Z6helperii, .Lfunc_end0-_Z6helperii
.cfi_endproc
# -- End function
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.byte 37 # DW_FORM_strx1
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 114 # DW_AT_str_offsets_base
.byte 23 # DW_FORM_sec_offset
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 37 # DW_FORM_strx1
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 115 # DW_AT_addr_base
.byte 23 # DW_FORM_sec_offset
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.byte 122 # DW_AT_call_all_calls
.byte 25 # DW_FORM_flag_present
.byte 110 # DW_AT_linkage_name
.byte 37 # DW_FORM_strx1
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 1 # Abbrev [1] 0xc:0x41 DW_TAG_compile_unit
.byte 0 # DW_AT_producer
.short 33 # DW_AT_language
.byte 1 # DW_AT_name
.long .Lstr_offsets_base0 # DW_AT_str_offsets_base
.long .Lline_table_start0 # DW_AT_stmt_list
.byte 2 # DW_AT_comp_dir
.byte 0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.long .Laddr_table_base0 # DW_AT_addr_base
.byte 2 # Abbrev [2] 0x23:0x25 DW_TAG_subprogram
.byte 0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 87
# DW_AT_call_all_calls
.byte 3 # DW_AT_linkage_name
.byte 4 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 72 # DW_AT_type
# DW_AT_external
.byte 3 # Abbrev [3] 0x33:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 85
.byte 6 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 72 # DW_AT_type
.byte 3 # Abbrev [3] 0x3d:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 84
.byte 7 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 72 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 4 # Abbrev [4] 0x48:0x4 DW_TAG_base_type
.byte 5 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
.section .debug_str_offsets,"",@progbits
.long 36 # Length of String Offsets Set
.short 5
.short 0
.Lstr_offsets_base0:
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "clang version 16.0.0" # string offset=0
.Linfo_string1:
.asciz "helper.cpp" # string offset=134
.Linfo_string2:
.asciz "." # string offset=145
.Linfo_string3:
.asciz "_Z6helperii" # string offset=198
.Linfo_string4:
.asciz "helper" # string offset=210
.Linfo_string5:
.asciz "int" # string offset=217
.Linfo_string6:
.asciz "z_" # string offset=221
.Linfo_string7:
.asciz "d_" # string offset=224
.section .debug_str_offsets,"",@progbits
.long .Linfo_string0
.long .Linfo_string1
.long .Linfo_string2
.long .Linfo_string3
.long .Linfo_string4
.long .Linfo_string5
.long .Linfo_string6
.long .Linfo_string7
.section .debug_addr,"",@progbits
.long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
.Ldebug_addr_start0:
.short 5 # DWARF version number
.byte 8 # Address size
.byte 0 # Segment selector size
.Laddr_table_base0:
.quad .Lfunc_begin0
.Ldebug_addr_end0:
.ident "clang version 16.0.0"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:

384
bolt/test/X86/Inputs/dwarf5-call-pc-function-null-check-main.s Normal file
View File

@ -0,0 +1,384 @@
# clang++ main.cpp -g2 -O2 -S
# int helper(int z_, int d_);
# int x = 0;
# int y = 1;
# int main(int argc, char *argv[]) {
# return helper(x, y);
# }
# This file was manually modified so that DW_AT_call_pc points to invalid address.
.text
.file "main.cpp"
.file 0 "." "main.cpp" md5 0xcd4b01475ec2d380058dc5a69f9dd741
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.Lfunc_begin0:
.loc 0 4 0 # main.cpp:4:0
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: main:argc <- $edi
#DEBUG_VALUE: main:argv <- $rsi
.loc 0 5 17 prologue_end # main.cpp:5:17
movl x(%rip), %edi
.Ltmp0:
#DEBUG_VALUE: main:argc <- [DW_OP_LLVM_entry_value 1] $edi
.loc 0 5 20 is_stmt 0 # main.cpp:5:20
movl y(%rip), %esi
.Ltmp1:
#DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
.loc 0 5 10 # main.cpp:5:10
jmp _Z6helperii@PLT # TAILCALL
.Ltmp2:
.Lfunc_end0:
.size main, .Lfunc_end0-main
.cfi_endproc
# -- End function
.type x,@object # @x
.bss
.globl x
.p2align 2
x:
.long 0 # 0x0
.size x, 4
.type y,@object # @y
.data
.globl y
.p2align 2
y:
.long 1 # 0x1
.size y, 4
.section .debug_loclists,"",@progbits
.long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length
.Ldebug_list_header_start0:
.short 5 # Version
.byte 8 # Address size
.byte 0 # Segment selector size
.long 2 # Offset entry count
.Lloclists_table_base0:
.long .Ldebug_loc0-.Lloclists_table_base0
.long .Ldebug_loc1-.Lloclists_table_base0
.Ldebug_loc0:
.byte 4 # DW_LLE_offset_pair
.uleb128 .Lfunc_begin0-.Lfunc_begin0 # starting offset
.uleb128 .Ltmp0-.Lfunc_begin0 # ending offset
.byte 1 # Loc expr size
.byte 85 # super-register DW_OP_reg5
.byte 4 # DW_LLE_offset_pair
.uleb128 .Ltmp0-.Lfunc_begin0 # starting offset
.uleb128 .Lfunc_end0-.Lfunc_begin0 # ending offset
.byte 4 # Loc expr size
.byte 163 # DW_OP_entry_value
.byte 1 # 1
.byte 85 # super-register DW_OP_reg5
.byte 159 # DW_OP_stack_value
.byte 0 # DW_LLE_end_of_list
.Ldebug_loc1:
.byte 4 # DW_LLE_offset_pair
.uleb128 .Lfunc_begin0-.Lfunc_begin0 # starting offset
.uleb128 .Ltmp1-.Lfunc_begin0 # ending offset
.byte 1 # Loc expr size
.byte 84 # DW_OP_reg4
.byte 4 # DW_LLE_offset_pair
.uleb128 .Ltmp1-.Lfunc_begin0 # starting offset
.uleb128 .Lfunc_end0-.Lfunc_begin0 # ending offset
.byte 4 # Loc expr size
.byte 163 # DW_OP_entry_value
.byte 1 # 1
.byte 84 # DW_OP_reg4
.byte 159 # DW_OP_stack_value
.byte 0 # DW_LLE_end_of_list
.Ldebug_list_header_end0:
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.byte 37 # DW_FORM_strx1
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 114 # DW_AT_str_offsets_base
.byte 23 # DW_FORM_sec_offset
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 37 # DW_FORM_strx1
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 115 # DW_AT_addr_base
.byte 23 # DW_FORM_sec_offset
.ascii "\214\001" # DW_AT_loclists_base
.byte 23 # DW_FORM_sec_offset
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.byte 122 # DW_AT_call_all_calls
.byte 25 # DW_FORM_flag_present
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 5 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 34 # DW_FORM_loclistx
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 6 # Abbreviation Code
.byte 72 # DW_TAG_call_site
.byte 0 # DW_CHILDREN_no
.byte 127 # DW_AT_call_origin
.byte 19 # DW_FORM_ref4
.ascii "\202\001" # DW_AT_call_tail_call
.byte 25 # DW_FORM_flag_present
.ascii "\201\001" # DW_AT_call_pc
.byte 27 # DW_FORM_addrx
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 7 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 110 # DW_AT_linkage_name
.byte 37 # DW_FORM_strx1
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 60 # DW_AT_declaration
.byte 25 # DW_FORM_flag_present
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 8 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 9 # Abbreviation Code
.byte 15 # DW_TAG_pointer_type
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 1 # Abbrev [1] 0xc:0x80 DW_TAG_compile_unit
.byte 0 # DW_AT_producer
.short 33 # DW_AT_language
.byte 1 # DW_AT_name
.long .Lstr_offsets_base0 # DW_AT_str_offsets_base
.long .Lline_table_start0 # DW_AT_stmt_list
.byte 2 # DW_AT_comp_dir
.byte 2 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.long .Laddr_table_base0 # DW_AT_addr_base
.long .Lloclists_table_base0 # DW_AT_loclists_base
.byte 2 # Abbrev [2] 0x27:0xb DW_TAG_variable
.byte 3 # DW_AT_name
.long 50 # DW_AT_type
# DW_AT_external
.byte 0 # DW_AT_decl_file
.byte 2 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 161
.byte 0
.byte 3 # Abbrev [3] 0x32:0x4 DW_TAG_base_type
.byte 4 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 2 # Abbrev [2] 0x36:0xb DW_TAG_variable
.byte 5 # DW_AT_name
.long 50 # DW_AT_type
# DW_AT_external
.byte 0 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 161
.byte 1
.byte 4 # Abbrev [4] 0x41:0x28 DW_TAG_subprogram
.byte 2 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 87
# DW_AT_call_all_calls
.byte 8 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 4 # DW_AT_decl_line
.long 50 # DW_AT_type
# DW_AT_external
.byte 5 # Abbrev [5] 0x50:0x9 DW_TAG_formal_parameter
.byte 0 # DW_AT_location
.byte 9 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 4 # DW_AT_decl_line
.long 50 # DW_AT_type
.byte 5 # Abbrev [5] 0x59:0x9 DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 10 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 4 # DW_AT_decl_line
.long 125 # DW_AT_type
.byte 6 # Abbrev [6] 0x62:0x6 DW_TAG_call_site
.long 105 # DW_AT_call_origin
# DW_AT_call_tail_call
.byte 3 # DW_AT_call_pc
.byte 0 # End Of Children Mark
.byte 7 # Abbrev [7] 0x69:0x14 DW_TAG_subprogram
.byte 6 # DW_AT_linkage_name
.byte 7 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 50 # DW_AT_type
# DW_AT_declaration
# DW_AT_external
.byte 8 # Abbrev [8] 0x72:0x5 DW_TAG_formal_parameter
.long 50 # DW_AT_type
.byte 8 # Abbrev [8] 0x77:0x5 DW_TAG_formal_parameter
.long 50 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 9 # Abbrev [9] 0x7d:0x5 DW_TAG_pointer_type
.long 130 # DW_AT_type
.byte 9 # Abbrev [9] 0x82:0x5 DW_TAG_pointer_type
.long 135 # DW_AT_type
.byte 3 # Abbrev [3] 0x87:0x4 DW_TAG_base_type
.byte 11 # DW_AT_name
.byte 6 # DW_AT_encoding
.byte 1 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
.section .debug_str_offsets,"",@progbits
.long 52 # Length of String Offsets Set
.short 5
.short 0
.Lstr_offsets_base0:
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "clang version 16.0.0" # string offset=0
.Linfo_string1:
.asciz "main.cpp" # string offset=134
.Linfo_string2:
.asciz "." # string offset=143
.Linfo_string3:
.asciz "x" # string offset=196
.Linfo_string4:
.asciz "int" # string offset=198
.Linfo_string5:
.asciz "y" # string offset=202
.Linfo_string6:
.asciz "_Z6helperii" # string offset=204
.Linfo_string7:
.asciz "helper" # string offset=216
.Linfo_string8:
.asciz "main" # string offset=223
.Linfo_string9:
.asciz "argc" # string offset=228
.Linfo_string10:
.asciz "argv" # string offset=233
.Linfo_string11:
.asciz "char" # string offset=238
.section .debug_str_offsets,"",@progbits
.long .Linfo_string0
.long .Linfo_string1
.long .Linfo_string2
.long .Linfo_string3
.long .Linfo_string4
.long .Linfo_string5
.long .Linfo_string6
.long .Linfo_string7
.long .Linfo_string8
.long .Linfo_string9
.long .Linfo_string10
.long .Linfo_string11
.section .debug_addr,"",@progbits
.long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
.Ldebug_addr_start0:
.short 5 # DWARF version number
.byte 8 # Address size
.byte 0 # Segment selector size
.Laddr_table_base0:
.quad x
.quad y
.quad .Lfunc_begin0
.quad .Ltmp1 + 0x1000000 # Manually modified to add 0x1000000
.Ldebug_addr_end0:
.ident "clang version 16.0.0"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:

18
bolt/test/X86/dwarf5-call-pc-function-null-check.test Normal file
View File

@ -0,0 +1,18 @@
# REQUIRES: system-linux
# RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-call-pc-function-null-check-main.s -o %tmain.o
# RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-call-pc-function-null-check-helper.s -o %thelper.o
# RUN: %clang %cflags -dwarf-5 %tmain.o %thelper.o -o %t.exe -Wl,-q
# RUN: llvm-bolt %t.exe -o %t.exe.bolt --update-debug-sections
# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.exe > %t.txt
# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.exe.bolt >> %t.txt
# RUN: cat %t.txt | FileCheck --check-prefix=CHECK %s
# Test checks we correclty handle nullptr returned by getBinaryFunctionContainingAddress for DW_AT_call_pc.
# This happens when address is not contained in any function.
# CHECK: DW_AT_call_pc [DW_FORM_addrx]
# CHECK-SAME: address = 0x[[#%.16x,ADDR:]]
# CHECK: DW_AT_call_pc [DW_FORM_addrx]
# CHECK-SAME: address = 0x[[#ADDR]]