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dw2-bfloat16.exp revision 1.1.1.1.4.2 
      1 # Copyright 2021-2023 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 # This test checks if GDB can identify bfloat16 and IEEE half float types and
     17 # print them correctly.
     18 #
     19 load_lib dwarf.exp
     20 
     21 # This test can only be run on targets which support DWARF-2 and use gas.
     22 if {![dwarf2_support]} {
     23     return 0
     24 }
     25 
     26 standard_testfile main.c -dw.S
     27 
     28 # Make some DWARF for the test.
     29 # 0x4049 is the equivalent of 3.141 for bfloat16.
     30 # 0x4248 is the equivalent of 3.1406 for IEEE half float.
     31 set asm_file [standard_output_file $srcfile2]
     32 Dwarf::assemble $asm_file {
     33     global srcdir subdir srcfile
     34 
     35     cu {} {
     36 	DW_TAG_compile_unit {
     37                 {DW_AT_language @DW_LANG_C}
     38                 {DW_AT_name     $srcfile}
     39                 {DW_AT_comp_dir /tmp}
     40         } {
     41 	    declare_labels bf16_type fp16_type \
     42 		bf16_var fp16_var
     43 
     44             bf16_type: DW_TAG_base_type {
     45                 {DW_AT_name __bf16}
     46 		{encoding @DW_ATE_float}
     47                 {DW_AT_byte_size 2 DW_FORM_sdata}
     48             }
     49 
     50             fp16_type: DW_TAG_base_type {
     51                 {DW_AT_name __fp16}
     52 		{encoding @DW_ATE_float}
     53                 {DW_AT_byte_size 2 DW_FORM_sdata}
     54             }
     55 
     56 	    bf16_var: DW_TAG_variable {
     57 		{DW_AT_name "bf16_1"}
     58 		{DW_AT_type :${bf16_type}}
     59 		{DW_AT_const_value 0x4049 DW_FORM_sdata}
     60 	    }
     61 
     62 	    fp16_var: DW_TAG_variable {
     63 		{DW_AT_name "fp16_1"}
     64 		{DW_AT_type :${fp16_type}}
     65 		{DW_AT_const_value 0x4248 DW_FORM_sdata}
     66 	    }
     67 	}
     68     }
     69 }
     70 
     71 if { [prepare_for_testing "failed to prepare" ${testfile} \
     72 	  [list $srcfile $asm_file] {nodebug}] } {
     73     return -1
     74 }
     75 
     76 if ![runto_main] {
     77     return -1
     78 }
     79 
     80 # Make sure we can print both types correctly.
     81 gdb_test "print bf16_1" " = 3.141"
     82 gdb_test "print fp16_1" " = 3.1406"
     83