# This test checks the handling of location lists in the case when the module is
# not loaded at the address at which it was linked (as happens with ASLR for
# instance).
# RUN: yaml2obj %S/Inputs/debug_loc-aslr.yaml -o %t.dmp
# RUN: llvm-mc --triple=x86_64-pc-linux --filetype=obj %s >%t.o
# RUN: %lldb -c %t.dmp -o "image add %t.o" \
# RUN: -o "image load --file %t.o --slide 0x470000" \
# RUN: -o "thread info" -o "frame variable" -o exit | FileCheck %s
# CHECK: thread #1: tid = 16001, 0x0000000000470001 {{.*}}`_start
# CHECK: (int) x = 47
# CHECK: (int) y = 74
.text
.globl _start
_start:
nop
retq
.Lstart_end:
.section .debug_loc,"",@progbits
# This location list implicitly uses the base address of the compile unit.
.Ldebug_loc0:
.quad _start-_start
.quad .Lstart_end-_start
.short 3 # Loc expr size
.byte 8 # DW_OP_const1u
.byte 47
.byte 159 # DW_OP_stack_value
.quad 0
.quad 0
# This is an equivalent location list to the first one, but here the base
# address is set explicitly.
.Ldebug_loc1:
.quad -1
.quad _start
.quad _start-_start
.quad .Lstart_end-_start
.short 3 # Loc expr size
.byte 8 # DW_OP_const1u
.byte 74
.byte 159 # DW_OP_stack_value
.quad 0
.quad 0
.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 8 # DW_FORM_string
.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 8 # DW_FORM_string
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 52 # DW_TAG_variable
.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 6 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 8 # DW_FORM_string
.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 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x6a DW_TAG_compile_unit
.asciz "Hand-written DWARF" # DW_AT_producer
.short 12 # DW_AT_language
.quad _start # DW_AT_low_pc
.long .Lstart_end-_start # DW_AT_high_pc
.byte 2 # Abbrev [2] 0x2a:0x43 DW_TAG_subprogram
.quad _start # DW_AT_low_pc
.long .Lstart_end-_start # DW_AT_high_pc
.asciz "_start" # DW_AT_name
.byte 4 # Abbrev [4] 0x52:0xf DW_TAG_variable
.long .Ldebug_loc0 # DW_AT_location
.asciz "x" # DW_AT_name
.long .Lint # DW_AT_type
.byte 4 # Abbrev [4] 0x52:0xf DW_TAG_variable
.long .Ldebug_loc1 # DW_AT_location
.asciz "y" # DW_AT_name
.long .Lint # DW_AT_type
.byte 0 # End Of Children Mark
.Lint:
.byte 6 # Abbrev [6] 0x6d:0x7 DW_TAG_base_type
.asciz "int" # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
Codebase Browser
llvm