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clang-p2996/lldb/test/Shell/SymbolFile/DWARF/x86/debug_loc.s
Zequan Wu 15983c28aa [LLDB] Dump valid ranges of variables 
This allows `image lookup -a ... -v` to print variables only if the given
address is covered by the valid ranges of the variables. Since variables created
in dwarf plugin always has empty scope range, print the variable if it has
empty scope.

Differential Revision: https://reviews.llvm.org/D119963
2022-03-02 13:44:19 -08:00

265 lines
11 KiB
ArmAsm
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# Test location list handling, including the cases of invalid input. The exact
# behavior in the invalid cases is not particularly important, but it should be
# "reasonable".
# UNSUPPORTED: lldb-repro
# RUN: llvm-mc -triple=x86_64-pc-linux -filetype=obj %s --defsym LOC=0 > %t
# RUN: %lldb %t -o "image lookup -v -a 0" -o "image lookup -v -a 2" \
# RUN: -o "image dump symfile" -o exit | FileCheck %s
# RUN: %lldb %t -o "image lookup -v -a 0 -show-variable-ranges" -o \
# RUN: "image lookup -v -a 2 -show-variable-ranges" \
# RUN: -o exit | FileCheck %s --check-prefix=ALL-RANGES
# RUN: llvm-mc -triple=x86_64-pc-linux -filetype=obj %s --defsym LOCLISTS=0 > %t
# RUN: %lldb %t -o "image lookup -v -a 0" -o "image lookup -v -a 2" \
# RUN: -o "image dump symfile" -o exit | FileCheck %s --check-prefix=CHECK --check-prefix=LOCLISTS
# ALL-RANGES-LABEL: image lookup -v -a 0 -show-variable-ranges
# ALL-RANGES: Variable: id = {{.*}}, name = "x0", type = "int", valid ranges = <block>, location = [0x0000000000000000, 0x0000000000000001) -> DW_OP_reg5 RDI, [0x0000000000000001, 0x0000000000000006) -> DW_OP_reg0 RAX
# ALL-RANGES: Variable: id = {{.*}}, name = "x1", type = "int", valid ranges = <block>, location = <empty>
# ALL-RANGES-LABEL: image lookup -v -a 2 -show-variable-ranges
# ALL-RANGES: Variable: id = {{.*}}, name = "x0", type = "int", valid ranges = <block>, location = [0x0000000000000000, 0x0000000000000001) -> DW_OP_reg5 RDI, [0x0000000000000001, 0x0000000000000006) -> DW_OP_reg0 RAX
# ALL-RANGES: Variable: id = {{.*}}, name = "x1", type = "int", valid ranges = <block>, location = <empty>
# ALL-RANGES: Variable: id = {{.*}}, name = "x3", type = "int", valid ranges = <block>, location = [0x0000000000000002, 0x0000000000000003) -> DW_OP_reg1 RDX
# CHECK-LABEL: image lookup -v -a 0
# CHECK: Variable: {{.*}}, name = "x0", type = "int", valid ranges = <block>, location = [0x0000000000000000, 0x0000000000000001) -> DW_OP_reg5 RDI
# CHECK: Variable: {{.*}}, name = "x1", type = "int", valid ranges = <block>, location = <empty>,
# CHECK-LABEL: image lookup -v -a 2
# CHECK: Variable: {{.*}}, name = "x0", type = "int", valid ranges = <block>, location = [0x0000000000000001, 0x0000000000000006) -> DW_OP_reg0 RAX
# CHECK: Variable: {{.*}}, name = "x1", type = "int", valid ranges = <block>, location = <empty>,
# CHECK: Variable: {{.*}}, name = "x3", type = "int", valid ranges = <block>, location = [0x0000000000000002, 0x0000000000000003) -> DW_OP_reg1 RDX
# CHECK-LABEL: image dump symfile
# CHECK: CompileUnit{0x00000000}
# CHECK: Function{
# CHECK: Variable{{.*}}, name = "x0", {{.*}}, scope = parameter, location =
# CHECK-NEXT: [0x0000000000000000, 0x0000000000000001): DW_OP_reg5 RDI
# CHECK-NEXT: [0x0000000000000001, 0x0000000000000006): DW_OP_reg0 RAX
# CHECK: Variable{{.*}}, name = "x1", {{.*}}, scope = parameter
# CHECK: Variable{{.*}}, name = "x2", {{.*}}, scope = parameter, location = 0x00000000: error: unexpected end of data
# CHECK: Variable{{.*}}, name = "x3", {{.*}}, scope = parameter, location =
# CHECK-NEXT: [0x0000000000000002, 0x0000000000000003): DW_OP_reg1 RDX
# LOCLISTS: Variable{{.*}}, name = "x4", {{.*}}, scope = parameter, location =
# LOCLISTS-NEXT: DW_LLE_startx_length (0x000000000000dead, 0x0000000000000001): DW_OP_reg2 RCX
.ifdef LOC
.macro OFFSET_PAIR lo hi
.quad \lo
.quad \hi
.endm
.macro BASE_ADDRESS base
.quad -1
.quad \base
.endm
.macro EXPR_SIZE sz
.short \sz
.endm
.macro END_OF_LIST
.quad 0
.quad 0
.endm
.endif
.ifdef LOCLISTS
.macro OFFSET_PAIR lo hi
.byte 4 # DW_LLE_offset_pair
.uleb128 \lo
.uleb128 \hi
.endm
.macro BASE_ADDRESS base
.byte 6 # DW_LLE_base_address
.quad \base
.endm
.macro EXPR_SIZE sz
.uleb128 \sz
.endm
.macro END_OF_LIST
.byte 0 # DW_LLE_end_of_list
.endm
.endif
.type f,@function
f: # @f
.Lfunc_begin0:
nop
.Ltmp0:
nop
.Ltmp1:
nop
.Ltmp2:
nop
.Ltmp3:
nop
.Ltmp4:
nop
.Lfunc_end0:
.size f, .Lfunc_end0-f
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "Hand-written DWARF"
.Linfo_string3:
.asciz "f"
.Linfo_string4:
.asciz "int"
.ifdef LOC
.section .debug_loc,"",@progbits
.endif
.ifdef LOCLISTS
.section .debug_loclists,"",@progbits
.long .Ldebug_loclist_table_end0-.Ldebug_loclist_table_start0 # Length
.Ldebug_loclist_table_start0:
.short 5 # Version
.byte 8 # Address size
.byte 0 # Segment selector size
.long 0 # Offset entry count
.endif
.Ldebug_loc0:
OFFSET_PAIR .Lfunc_begin0-.Lfunc_begin0, .Ltmp0-.Lfunc_begin0
EXPR_SIZE 1
.byte 85 # super-register DW_OP_reg5
OFFSET_PAIR .Ltmp0-.Lfunc_begin0, .Lfunc_end0-.Lfunc_begin0
EXPR_SIZE 1
.byte 80 # super-register DW_OP_reg0
END_OF_LIST
.Ldebug_loc3:
BASE_ADDRESS .Ltmp1
OFFSET_PAIR .Ltmp1-.Ltmp1, .Ltmp2-.Ltmp1
EXPR_SIZE 1
.byte 81 # super-register DW_OP_reg1
END_OF_LIST
.ifdef LOCLISTS
.Ldebug_loc4:
.byte 3 # DW_LLE_startx_length
.uleb128 0xdead
.uleb128 1
EXPR_SIZE 1
.byte 82 # super-register DW_OP_reg2
END_OF_LIST
.endif
.Ldebug_loc2:
OFFSET_PAIR .Lfunc_begin0-.Lfunc_begin0, .Lfunc_end0-.Lfunc_begin0
EXPR_SIZE 0xdead
.Ldebug_loclist_table_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 14 # DW_FORM_strp
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.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 1 # DW_CHILDREN_yes
.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 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.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 23 # DW_FORM_sec_offset
.byte 3 # DW_AT_name
.byte 8 # DW_FORM_string
.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 14 # DW_FORM_strp
.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:
.ifdef LOC
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.endif
.ifdef LOCLISTS
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
.endif
.byte 1 # Abbrev [1] 0xb:0x50 DW_TAG_compile_unit
.long .Linfo_string0 # DW_AT_producer
.short 12 # DW_AT_language
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 2 # Abbrev [2] 0x2a:0x29 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
.long .Lint # DW_AT_type
.byte 3 # Abbrev [3] DW_TAG_formal_parameter
.long .Ldebug_loc0 # DW_AT_location
.asciz "x0" # DW_AT_name
.long .Lint-.Lcu_begin0 # DW_AT_type
.byte 3 # Abbrev [3] DW_TAG_formal_parameter
.long 0xdeadbeef # DW_AT_location
.asciz "x1" # DW_AT_name
.long .Lint-.Lcu_begin0 # DW_AT_type
.byte 3 # Abbrev [3] DW_TAG_formal_parameter
.long .Ldebug_loc2 # DW_AT_location
.asciz "x2" # DW_AT_name
.long .Lint-.Lcu_begin0 # DW_AT_type
.byte 3 # Abbrev [3] DW_TAG_formal_parameter
.long .Ldebug_loc3 # DW_AT_location
.asciz "x3" # DW_AT_name
.long .Lint-.Lcu_begin0 # DW_AT_type
.ifdef LOCLISTS
.byte 3 # Abbrev [3] DW_TAG_formal_parameter
.long .Ldebug_loc4 # DW_AT_location
.asciz "x4" # DW_AT_name
.long .Lint-.Lcu_begin0 # DW_AT_type
.endif
.byte 0 # End Of Children Mark
.Lint:
.byte 4 # Abbrev [4] 0x53:0x7 DW_TAG_base_type
.long .Linfo_string4 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
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