5a8db84964
The DWARFExpression is parsing the location lists in about five places. Of those, only one actually had proper support for base address selection entries. Since r374600, llvm has started to produce location expressions with base address selection entries more aggresively, which caused some tests to fail. This patch adds support for these entries to the places which had it missing, fixing the failing tests. It also adds a targeted test for the two of the three fixes, which should continue testing this functionality even if the llvm output changes. I am not aware of a way to write a targeted test for the third fix (DWARFExpression::Evaluate). llvm-svn: 374769
161 lines
6.9 KiB
ArmAsm
161 lines
6.9 KiB
ArmAsm
# Test debug_loc parsing, including the cases of invalid input. The exact
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# behavior in the invalid cases is not particularly important, but it should be
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# "reasonable".
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# REQUIRES: x86
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# RUN: llvm-mc -triple=x86_64-pc-linux -filetype=obj %s > %t
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# RUN: %lldb %t -o "image lookup -v -a 0" -o "image lookup -v -a 2" -o exit \
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# RUN: | FileCheck %s
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# CHECK-LABEL: image lookup -v -a 0
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# CHECK: Variable: {{.*}}, name = "x0", type = "int", location = DW_OP_reg5 RDI,
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# CHECK: Variable: {{.*}}, name = "x1", type = "int", location = ,
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# CHECK: Variable: {{.*}}, name = "x2", type = "int", location = ,
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# CHECK-LABEL: image lookup -v -a 2
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# CHECK: Variable: {{.*}}, name = "x0", type = "int", location = DW_OP_reg0 RAX,
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# CHECK: Variable: {{.*}}, name = "x1", type = "int", location = ,
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# CHECK: Variable: {{.*}}, name = "x2", type = "int", location = ,
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# CHECK: Variable: {{.*}}, name = "x3", type = "int", location = DW_OP_reg1 RDX,
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.type f,@function
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f: # @f
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.Lfunc_begin0:
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nop
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.Ltmp0:
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nop
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.Ltmp1:
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nop
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.Ltmp2:
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nop
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.Ltmp3:
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nop
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.Ltmp4:
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nop
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.Lfunc_end0:
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.size f, .Lfunc_end0-f
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.section .debug_str,"MS",@progbits,1
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.Linfo_string0:
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.asciz "Hand-written DWARF"
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.Linfo_string3:
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.asciz "f"
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.Linfo_string4:
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.asciz "int"
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.section .debug_loc,"",@progbits
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.Ldebug_loc0:
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.quad .Lfunc_begin0-.Lfunc_begin0
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.quad .Ltmp0-.Lfunc_begin0
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.short 1 # Loc expr size
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.byte 85 # super-register DW_OP_reg5
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.quad .Ltmp0-.Lfunc_begin0
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.quad .Lfunc_end0-.Lfunc_begin0
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.short 1 # Loc expr size
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.byte 80 # super-register DW_OP_reg0
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.quad 0
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.quad 0
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.Ldebug_loc3:
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.quad -1 # Select base address
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.quad .Ltmp1
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.quad .Ltmp1-.Ltmp1
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.quad .Ltmp2-.Ltmp1
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.short 1 # Loc expr size
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.byte 81 # super-register DW_OP_reg1
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.quad 0
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.quad 0
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.Ldebug_loc2:
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.quad .Lfunc_begin0-.Lfunc_begin0
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.quad .Lfunc_end0-.Lfunc_begin0
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.short 0xdead # Loc expr size
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.section .debug_abbrev,"",@progbits
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.byte 1 # Abbreviation Code
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.byte 17 # DW_TAG_compile_unit
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.byte 1 # DW_CHILDREN_yes
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.byte 37 # DW_AT_producer
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.byte 14 # DW_FORM_strp
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.byte 19 # DW_AT_language
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.byte 5 # DW_FORM_data2
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 2 # Abbreviation Code
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.byte 46 # DW_TAG_subprogram
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.byte 1 # DW_CHILDREN_yes
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.byte 17 # DW_AT_low_pc
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.byte 1 # DW_FORM_addr
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.byte 18 # DW_AT_high_pc
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.byte 6 # DW_FORM_data4
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.byte 3 # DW_AT_name
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.byte 14 # DW_FORM_strp
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.byte 73 # DW_AT_type
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.byte 19 # DW_FORM_ref4
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 3 # Abbreviation Code
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.byte 5 # DW_TAG_formal_parameter
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.byte 0 # DW_CHILDREN_no
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.byte 2 # DW_AT_location
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.byte 23 # DW_FORM_sec_offset
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.byte 3 # DW_AT_name
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.byte 8 # DW_FORM_string
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.byte 73 # DW_AT_type
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.byte 19 # DW_FORM_ref4
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 4 # Abbreviation Code
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.byte 36 # DW_TAG_base_type
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.byte 0 # DW_CHILDREN_no
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.byte 3 # DW_AT_name
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.byte 14 # DW_FORM_strp
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.byte 62 # DW_AT_encoding
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.byte 11 # DW_FORM_data1
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.byte 11 # DW_AT_byte_size
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.byte 11 # DW_FORM_data1
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 0 # EOM(3)
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.section .debug_info,"",@progbits
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.Lcu_begin0:
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.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
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.Ldebug_info_start0:
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.short 4 # DWARF version number
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.long .debug_abbrev # Offset Into Abbrev. Section
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.byte 8 # Address Size (in bytes)
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.byte 1 # Abbrev [1] 0xb:0x50 DW_TAG_compile_unit
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.long .Linfo_string0 # DW_AT_producer
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.short 12 # DW_AT_language
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.byte 2 # Abbrev [2] 0x2a:0x29 DW_TAG_subprogram
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.quad .Lfunc_begin0 # DW_AT_low_pc
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.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
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.long .Linfo_string3 # DW_AT_name
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.long .Lint # DW_AT_type
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.byte 3 # Abbrev [3] DW_TAG_formal_parameter
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.long .Ldebug_loc0 # DW_AT_location
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.asciz "x0" # DW_AT_name
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.long .Lint-.Lcu_begin0 # DW_AT_type
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.byte 3 # Abbrev [3] DW_TAG_formal_parameter
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.long 0xdeadbeef # DW_AT_location
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.asciz "x1" # DW_AT_name
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.long .Lint-.Lcu_begin0 # DW_AT_type
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.byte 3 # Abbrev [3] DW_TAG_formal_parameter
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.long .Ldebug_loc2 # DW_AT_location
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.asciz "x2" # DW_AT_name
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.long .Lint-.Lcu_begin0 # DW_AT_type
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.byte 3 # Abbrev [3] DW_TAG_formal_parameter
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.long .Ldebug_loc3 # DW_AT_location
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.asciz "x3" # DW_AT_name
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.long .Lint-.Lcu_begin0 # DW_AT_type
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.byte 0 # End Of Children Mark
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.Lint:
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.byte 4 # Abbrev [4] 0x53:0x7 DW_TAG_base_type
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.long .Linfo_string4 # DW_AT_name
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.byte 5 # DW_AT_encoding
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.byte 4 # DW_AT_byte_size
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.byte 0 # End Of Children Mark
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.Ldebug_info_end0:
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