| # RUN: llvm-mc -filetype=obj -o %t -triple x86_64-apple-macosx10.15.0 %s |
| # RUN: %lldb %t -o "target variable ug" -b | FileCheck %s |
| |
| # CHECK: (lldb) target variable ug |
| # CHECK: (U) ug = { |
| # CHECK: raw = 1688469761 |
| # CHECK: = (a = 1, b = 1, c = 36, d = 2, e = 36, f = 1) |
| # CHECK: } |
| |
| # We are testing how ValueObject deals with bit-fields when an argument is |
| # passed by register. Compiling at -O1 allows us to capture this case and |
| # test it. |
| # |
| # typedef union { |
| # unsigned raw; |
| # struct { |
| # unsigned a : 8; |
| # unsigned b : 8; |
| # unsigned c : 6; |
| # unsigned d : 2; |
| # unsigned e : 6; |
| # unsigned f : 2; |
| # }; |
| # } U; |
| # |
| # // This appears first in the debug info and pulls the type definition in... |
| # static U __attribute__((used)) _type_anchor; |
| # // ... then our useful variable appears last in the debug info and we can |
| # // tweak the assembly without needing to edit a lot of offsets by hand. |
| # static U ug; |
| # |
| # extern void f(U); |
| # |
| # // Omit debug info for main. |
| # __attribute__((nodebug)) |
| # int main() { |
| # ug.raw = 0x64A40101; |
| # f(ug); |
| # f((U)ug.raw); |
| # } |
| # |
| # Compiled as follows: |
| # |
| # clang -O1 -gdwarf-4 weird.c -S -o weird.s |
| # |
| # Then the DWARF was hand modified to get DW_AT_LOCATION for ug from: |
| # |
| # DW_AT_location (DW_OP_addr 0x3f8, DW_OP_deref, DW_OP_constu 0x64a40101, DW_OP_mul, DW_OP_lit0, DW_OP_plus, DW_OP_stack_value) |
| # |
| # to this: |
| # |
| # DW_AT_location (DW_OP_constu 0x64a40101, DW_OP_stack_value) |
| # |
| # to work-around a seperate bug. |
| |
| .zerofill __DATA,__bss,__type_anchor,4,2 ## @_type_anchor |
| .zerofill __DATA,__bss,_ug.0,1,2 ## @ug.0 |
| .no_dead_strip __type_anchor |
| .section __DWARF,__debug_str,regular,debug |
| Linfo_string: |
| .zero 138 |
| .asciz "_type_anchor" ## string offset=138 |
| .asciz "U" ## string offset=151 |
| .asciz "raw" ## string offset=153 |
| .asciz "unsigned int" ## string offset=157 |
| .asciz "a" ## string offset=170 |
| .asciz "b" ## string offset=172 |
| .asciz "c" ## string offset=174 |
| .asciz "d" ## string offset=176 |
| .asciz "e" ## string offset=178 |
| .asciz "f" ## string offset=180 |
| .asciz "ug" ## string offset=182 |
| .section __DWARF,__debug_abbrev,regular,debug |
| Lsection_abbrev: |
| .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 3 ## DW_AT_name |
| .byte 14 ## DW_FORM_strp |
| .ascii "\202|" ## DW_AT_LLVM_sysroot |
| .byte 14 ## DW_FORM_strp |
| .ascii "\357\177" ## DW_AT_APPLE_sdk |
| .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 |
| .ascii "\341\177" ## DW_AT_APPLE_optimized |
| .byte 25 ## DW_FORM_flag_present |
| .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 14 ## DW_FORM_strp |
| .byte 73 ## DW_AT_type |
| .byte 19 ## DW_FORM_ref4 |
| .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 22 ## DW_TAG_typedef |
| .byte 0 ## DW_CHILDREN_no |
| .byte 73 ## DW_AT_type |
| .byte 19 ## DW_FORM_ref4 |
| .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 0 ## EOM(1) |
| .byte 0 ## EOM(2) |
| .byte 4 ## Abbreviation Code |
| .byte 23 ## DW_TAG_union_type |
| .byte 1 ## DW_CHILDREN_yes |
| .byte 11 ## DW_AT_byte_size |
| .byte 11 ## DW_FORM_data1 |
| .byte 58 ## DW_AT_decl_file |
| .byte 11 ## DW_FORM_data1 |
| .byte 59 ## DW_AT_decl_line |
| .byte 11 ## DW_FORM_data1 |
| .byte 0 ## EOM(1) |
| .byte 0 ## EOM(2) |
| .byte 5 ## Abbreviation Code |
| .byte 13 ## DW_TAG_member |
| .byte 0 ## DW_CHILDREN_no |
| .byte 3 ## DW_AT_name |
| .byte 14 ## DW_FORM_strp |
| .byte 73 ## DW_AT_type |
| .byte 19 ## DW_FORM_ref4 |
| .byte 58 ## DW_AT_decl_file |
| .byte 11 ## DW_FORM_data1 |
| .byte 59 ## DW_AT_decl_line |
| .byte 11 ## DW_FORM_data1 |
| .byte 56 ## DW_AT_data_member_location |
| .byte 11 ## DW_FORM_data1 |
| .byte 0 ## EOM(1) |
| .byte 0 ## EOM(2) |
| .byte 6 ## Abbreviation Code |
| .byte 13 ## DW_TAG_member |
| .byte 0 ## DW_CHILDREN_no |
| .byte 73 ## DW_AT_type |
| .byte 19 ## DW_FORM_ref4 |
| .byte 58 ## DW_AT_decl_file |
| .byte 11 ## DW_FORM_data1 |
| .byte 59 ## DW_AT_decl_line |
| .byte 11 ## DW_FORM_data1 |
| .byte 56 ## DW_AT_data_member_location |
| .byte 11 ## DW_FORM_data1 |
| .byte 0 ## EOM(1) |
| .byte 0 ## EOM(2) |
| .byte 7 ## Abbreviation Code |
| .byte 19 ## DW_TAG_structure_type |
| .byte 1 ## DW_CHILDREN_yes |
| .byte 11 ## DW_AT_byte_size |
| .byte 11 ## DW_FORM_data1 |
| .byte 58 ## DW_AT_decl_file |
| .byte 11 ## DW_FORM_data1 |
| .byte 59 ## DW_AT_decl_line |
| .byte 11 ## DW_FORM_data1 |
| .byte 0 ## EOM(1) |
| .byte 0 ## EOM(2) |
| .byte 8 ## Abbreviation Code |
| .byte 13 ## DW_TAG_member |
| .byte 0 ## DW_CHILDREN_no |
| .byte 3 ## DW_AT_name |
| .byte 14 ## DW_FORM_strp |
| .byte 73 ## DW_AT_type |
| .byte 19 ## DW_FORM_ref4 |
| .byte 58 ## DW_AT_decl_file |
| .byte 11 ## DW_FORM_data1 |
| .byte 59 ## DW_AT_decl_line |
| .byte 11 ## DW_FORM_data1 |
| .byte 13 ## DW_AT_bit_size |
| .byte 11 ## DW_FORM_data1 |
| .byte 107 ## DW_AT_data_bit_offset |
| .byte 11 ## DW_FORM_data1 |
| .byte 0 ## EOM(1) |
| .byte 0 ## EOM(2) |
| .byte 9 ## 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 __DWARF,__debug_info,regular,debug |
| Lsection_info: |
| Lcu_begin0: |
| .set Lset0, Ldebug_info_end0-Ldebug_info_start0 ## Length of Unit |
| .long Lset0 |
| Ldebug_info_start0: |
| .short 4 ## DWARF version number |
| .set Lset1, Lsection_abbrev-Lsection_abbrev ## Offset Into Abbrev. Section |
| .long Lset1 |
| .byte 8 ## Address Size (in bytes) |
| .byte 1 ## Abbrev [1] 0xb:0xd0 DW_TAG_compile_unit |
| .long 0 ## DW_AT_producer |
| .short 12 ## DW_AT_language |
| .long 47 ## DW_AT_name |
| .long 60 ## DW_AT_LLVM_sysroot |
| .long 117 ## DW_AT_APPLE_sdk |
| .long 0 ## DW_AT_stmt_list |
| .long 133 ## DW_AT_comp_dir |
| ## DW_AT_APPLE_optimized |
| .byte 2 ## Abbrev [2] 0x26:0x15 DW_TAG_variable |
| .long 138 ## DW_AT_name |
| .long 59 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 14 ## DW_AT_decl_line |
| .byte 9 ## DW_AT_location |
| .byte 3 |
| .quad __type_anchor |
| .byte 3 ## Abbrev [3] 0x3b:0xb DW_TAG_typedef |
| .long 70 ## DW_AT_type |
| .long 151 ## DW_AT_name |
| .byte 1 ## DW_AT_decl_file |
| .byte 11 ## DW_AT_decl_line |
| .byte 4 ## Abbrev [4] 0x46:0x6c DW_TAG_union_type |
| .byte 4 ## DW_AT_byte_size |
| .byte 1 ## DW_AT_decl_file |
| .byte 1 ## DW_AT_decl_line |
| .byte 5 ## Abbrev [5] 0x4a:0xc DW_TAG_member |
| .long 153 ## DW_AT_name |
| .long 178 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 2 ## DW_AT_decl_line |
| .byte 0 ## DW_AT_data_member_location |
| .byte 6 ## Abbrev [6] 0x56:0x8 DW_TAG_member |
| .long 94 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 3 ## DW_AT_decl_line |
| .byte 0 ## DW_AT_data_member_location |
| .byte 7 ## Abbrev [7] 0x5e:0x53 DW_TAG_structure_type |
| .byte 4 ## DW_AT_byte_size |
| .byte 1 ## DW_AT_decl_file |
| .byte 3 ## DW_AT_decl_line |
| .byte 8 ## Abbrev [8] 0x62:0xd DW_TAG_member |
| .long 170 ## DW_AT_name |
| .long 178 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 4 ## DW_AT_decl_line |
| .byte 8 ## DW_AT_bit_size |
| .byte 0 ## DW_AT_data_bit_offset |
| .byte 8 ## Abbrev [8] 0x6f:0xd DW_TAG_member |
| .long 172 ## DW_AT_name |
| .long 178 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 5 ## DW_AT_decl_line |
| .byte 8 ## DW_AT_bit_size |
| .byte 8 ## DW_AT_data_bit_offset |
| .byte 8 ## Abbrev [8] 0x7c:0xd DW_TAG_member |
| .long 174 ## DW_AT_name |
| .long 178 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 6 ## DW_AT_decl_line |
| .byte 6 ## DW_AT_bit_size |
| .byte 16 ## DW_AT_data_bit_offset |
| .byte 8 ## Abbrev [8] 0x89:0xd DW_TAG_member |
| .long 176 ## DW_AT_name |
| .long 178 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 7 ## DW_AT_decl_line |
| .byte 2 ## DW_AT_bit_size |
| .byte 22 ## DW_AT_data_bit_offset |
| .byte 8 ## Abbrev [8] 0x96:0xd DW_TAG_member |
| .long 178 ## DW_AT_name |
| .long 178 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 8 ## DW_AT_decl_line |
| .byte 6 ## DW_AT_bit_size |
| .byte 24 ## DW_AT_data_bit_offset |
| .byte 8 ## Abbrev [8] 0xa3:0xd DW_TAG_member |
| .long 180 ## DW_AT_name |
| .long 178 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 9 ## DW_AT_decl_line |
| .byte 2 ## DW_AT_bit_size |
| .byte 30 ## DW_AT_data_bit_offset |
| .byte 0 ## End Of Children Mark |
| .byte 0 ## End Of Children Mark |
| .byte 9 ## Abbrev [9] 0xb2:0x7 DW_TAG_base_type |
| .long 157 ## DW_AT_name |
| .byte 7 ## DW_AT_encoding |
| .byte 4 ## DW_AT_byte_size |
| .byte 2 ## Abbrev [2] 0xb9:0x21 DW_TAG_variable |
| .long 182 ## DW_AT_name |
| .long 59 ## DW_AT_type |
| .byte 1 ## DW_AT_decl_file |
| .byte 17 ## DW_AT_decl_line |
| .byte 7 ## DW_AT_location |
| .byte 16 |
| .ascii "\201\202\220\245\006" |
| .byte 159 |
| .byte 0 ## End Of Children Mark |
| Ldebug_info_end0: |
