gdb/testsuite/gdb.dwarf2/intbits.exp

   1 # Copyright 2020-2024 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Test support for non-byte-sized integer base types.
  17
  18 load_lib dwarf.exp
  19
  20 # This test can only be run on targets which support DWARF-2 and use gas.
  21 require dwarf2_support
  22
  23 standard_testfile .c .S
  24
  25 set executable ${testfile}
  26 set asm_file [standard_output_file ${srcfile2}]
  27
  28 if [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] {
  29     return -1
  30 }
  31
  32 # Create the DWARF.
  33 Dwarf::assemble ${asm_file} {
  34     cu {} {
  35         DW_TAG_compile_unit {
  36             {DW_AT_language @DW_LANG_C_plus_plus}
  37         } {
  38             declare_labels i7_type u1_type u17_type u31_type \
  39                 u31_1_type u32_0_type u0_0_type be30_1_type
  40
  41             i7_type: DW_TAG_base_type {
  42                 {DW_AT_encoding @DW_ATE_signed}
  43                 {DW_AT_endianity @DW_END_little}
  44                 {DW_AT_name "i7"}
  45                 {DW_AT_byte_size 2 DW_FORM_udata}
  46                 {DW_AT_bit_size 7 DW_FORM_implicit_const}
  47             }
  48
  49             DW_TAG_variable {
  50                 {DW_AT_name "v_i16_m1"}
  51                 {DW_AT_type :${i7_type}}
  52                 {DW_AT_external 1 DW_FORM_flag}
  53                 {DW_AT_location {DW_OP_addr [gdb_target_symbol "i16_m1"]}
  54                     SPECIAL_expr}
  55             }
  56
  57             u1_type: DW_TAG_base_type {
  58                 {DW_AT_encoding @DW_ATE_boolean}
  59                 {DW_AT_endianity @DW_END_little}
  60                 {DW_AT_name "u1"}
  61                 {DW_AT_byte_size 2 DW_FORM_udata}
  62                 {DW_AT_bit_size 1 DW_FORM_udata}
  63                 {DW_AT_data_bit_offset 2 DW_FORM_udata}
  64             }
  65
  66             DW_TAG_variable {
  67                 {DW_AT_name "v_u16_1"}
  68                 {DW_AT_type :${u1_type}}
  69                 {DW_AT_external 1 DW_FORM_flag}
  70                 {DW_AT_location {DW_OP_addr [gdb_target_symbol "u16_1"]}
  71                     SPECIAL_expr}
  72             }
  73
  74             u17_type: DW_TAG_base_type {
  75                 {DW_AT_encoding @DW_ATE_signed}
  76                 {DW_AT_endianity @DW_END_little}
  77                 {DW_AT_name "u17"}
  78                 {DW_AT_byte_size 4 DW_FORM_udata}
  79                 {DW_AT_bit_size 17 DW_FORM_udata}
  80             }
  81
  82             DW_TAG_variable {
  83                 {DW_AT_name "v_u32_m2"}
  84                 {DW_AT_type :${u17_type}}
  85                 {DW_AT_external 1 DW_FORM_flag}
  86                 {DW_AT_location {DW_OP_addr [gdb_target_symbol "u32_m2"]}
  87                     SPECIAL_expr}
  88             }
  89
  90             u31_type: DW_TAG_base_type {
  91                 {DW_AT_encoding @DW_ATE_unsigned}
  92                 {DW_AT_endianity @DW_END_little}
  93                 {DW_AT_name "u31"}
  94                 {DW_AT_byte_size 4 DW_FORM_udata}
  95                 {DW_AT_bit_size 31 DW_FORM_udata}
  96             }
  97
  98             DW_TAG_variable {
  99                 {DW_AT_name "v_u32_1"}
 100                 {DW_AT_type :${u31_type}}
 101                 {DW_AT_external 1 DW_FORM_flag}
 102                 {DW_AT_location {DW_OP_addr [gdb_target_symbol "u32_1"]}
 103                     SPECIAL_expr}
 104             }
 105
 106             u31_1_type: DW_TAG_base_type {
 107                 {DW_AT_encoding @DW_ATE_unsigned}
 108                 {DW_AT_endianity @DW_END_little}
 109                 {DW_AT_name "u31_1"}
 110                 {DW_AT_byte_size 4 DW_FORM_udata}
 111                 {DW_AT_bit_size 31 DW_FORM_udata}
 112                 {DW_AT_data_bit_offset 1 DW_FORM_udata}
 113             }
 114
 115             DW_TAG_variable {
 116                 {DW_AT_name "v_u32_1_off"}
 117                 {DW_AT_type :${u31_1_type}}
 118                 {DW_AT_external 1 DW_FORM_flag}
 119                 {DW_AT_location {DW_OP_addr [gdb_target_symbol "u32_1_off"]}
 120                     SPECIAL_expr}
 121             }
 122
 123             be30_1_type: DW_TAG_base_type {
 124                 {DW_AT_encoding @DW_ATE_unsigned}
 125                 {DW_AT_endianity @DW_END_big}
 126                 {DW_AT_name "be30_1"}
 127                 {DW_AT_byte_size 4 DW_FORM_udata}
 128                 {DW_AT_bit_size 30 DW_FORM_udata}
 129                 {DW_AT_data_bit_offset 1 DW_FORM_udata}
 130             }
 131
 132             DW_TAG_variable {
 133                 {DW_AT_name "v_be30_1_off"}
 134                 {DW_AT_type :${be30_1_type}}
 135                 {DW_AT_external 1 DW_FORM_flag}
 136                 {DW_AT_location {DW_OP_addr [gdb_target_symbol "be30_1_off"]}
 137                     SPECIAL_expr}
 138             }
 139
 140             u32_0_type: DW_TAG_base_type {
 141                 {DW_AT_encoding @DW_ATE_unsigned}
 142                 {DW_AT_endianity @DW_END_little}
 143                 {DW_AT_name "u32_0"}
 144                 {DW_AT_byte_size 4 DW_FORM_udata}
 145                 {DW_AT_bit_size 0 DW_FORM_udata}
 146             }
 147
 148             DW_TAG_variable {
 149                 {DW_AT_name "v_u32_0"}
 150                 {DW_AT_type :${u32_0_type}}
 151                 {DW_AT_external 1 DW_FORM_flag}
 152                 {DW_AT_location {DW_OP_addr [gdb_target_symbol "u32_0"]}
 153                     SPECIAL_expr}
 154             }
 155
 156             u0_0_type: DW_TAG_base_type {
 157                 {DW_AT_encoding @DW_ATE_unsigned}
 158                 {DW_AT_endianity @DW_END_little}
 159                 {DW_AT_name "u0_0"}
 160                 {DW_AT_byte_size 0 DW_FORM_udata}
 161             }
 162
 163             DW_TAG_variable {
 164                 {DW_AT_name "v_u0_0"}
 165                 {DW_AT_type :${u0_0_type}}
 166                 {DW_AT_external 1 DW_FORM_flag}
 167                 {DW_AT_location {DW_OP_addr [gdb_target_symbol "u32_0"]}
 168                     SPECIAL_expr}
 169             }
 170         }
 171     }
 172 }
 173
 174 if {[prepare_for_testing "failed to prepare" ${executable} \
 175          [list ${asm_file} ${srcfile}] {}]} {
 176     return -1
 177 }
 178
 179 if {![runto_main]} {
 180     return -1
 181 }
 182
 183 gdb_test "print v_i16_m1" "= -1"
 184 gdb_test "print v_u16_1" "= true"
 185 gdb_test "print v_u32_m2" "= -2"
 186 gdb_test "print v_u32_1" "= 1"
 187 gdb_test "print v_u32_0" "= 0"
 188 gdb_test "print v_u0_0" "= 0"
 189
 190 gdb_test "print v_i16_m1 = 7" "= 7"
 191 gdb_test "print v_i16_m1" "= 7" "print v_i16_m1 after assignment"
 192
 193 gdb_test "print v_u32_1_off" "= 1"
 194 gdb_test "print v_u32_1_off = 7" " = 7"
 195 gdb_test "x/4xb &v_u32_1_off" ":\t0x0e\t0x00\t0x00\t0x00"
 196
 197 gdb_test "print v_be30_1_off" "= 1"
 198 gdb_test "print v_be30_1_off = 7" " = 7"
 199 gdb_test "x/4xb &v_be30_1_off" ":\t0x00\t0x00\t0x00\t0x0e"