Home | History | Annotate | Line # | Download | only in gdb.dwarf2 
      1 # Copyright 2023-2024 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 # Check that prologue analysis in foo is correct in the presence of a
     17 # prologue_end marker in immediately following function bar.
     18 
     19 load_lib dwarf.exp
     20 
     21 # This test can only be run on targets which support DWARF-2 and use gas.
     22 require dwarf2_support
     23 
     24 standard_testfile .c .S
     25 
     26 set asm_file [standard_output_file $srcfile2]
     27 Dwarf::assemble $asm_file {
     28     global srcdir subdir srcfile srcfile2
     29     declare_labels lines_label
     30 
     31     cu {} {
     32 	compile_unit {
     33 	    {language @DW_LANG_C}
     34 	    {name dw2-prologue-end.c}
     35 	    {stmt_list ${lines_label} DW_FORM_sec_offset}
     36 	} {
     37 	    subprogram {
     38 		{external 1 flag}
     39 		{name foo}
     40 		{low_pc foo_label addr}
     41 		{high_pc foo_end addr}
     42 	    }
     43 	    subprogram {
     44 		{external 1 flag}
     45 		{name bar}
     46 		{low_pc bar_label addr}
     47 		{high_pc bar_end addr}
     48 	    }
     49 	}
     50     }
     51 
     52     lines {version 5} lines_label {
     53 	set diridx [include_dir "${srcdir}/${subdir}"]
     54 	file_name "$srcfile" $diridx
     55 
     56 	program {
     57 	    DW_LNS_set_file $diridx
     58 
     59 	    DW_LNE_set_address foo_label
     60 	    line [gdb_get_line_number "Foo body"]
     61 	    DW_LNS_copy
     62 
     63 	    DW_LNE_set_address bar_label
     64 	    DW_LNS_set_prologue_end
     65 	    line [gdb_get_line_number "Bar body"]
     66 	    DW_LNS_copy
     67 
     68 	    DW_LNE_set_address bar_end
     69 	    DW_LNE_end_sequence
     70 	}
     71     }
     72 }
     73 
     74 if { [prepare_for_testing "failed to prepare" ${testfile} \
     75 	  [list $srcfile $asm_file] {nodebug}] } {
     76     return -1
     77 }
     78 
     79 # Don't runto main here, otherwise the following doesn't
     80 # function as regression test for PR30369.
     81 
     82 # Get the "break foo" address.
     83 
     84 set break_addr ""
     85 gdb_test_multiple "break foo" "" {
     86     -re -wrap "at ($hex):\[^\r\n\]*" {
     87 	set break_addr $expect_out(1,string)
     88 	pass $gdb_test_name
     89     }
     90 }
     91 
     92 if { $break_addr == "" } {
     93     return
     94 }
     95 
     96 # Get the "bar_label" address.
     97 
     98 set bar_label_addr ""
     99 gdb_test_multiple "print /x &bar_label" "" {
    100     -re -wrap "= ($hex)" {
    101 	set bar_label_addr $expect_out(1,string)
    102 	pass $gdb_test_name
    103     }
    104 }
    105 
    106 if { $bar_label_addr == "" } {
    107     return
    108 }
    109 
    110 # Check that bar immediately follows foo.  Otherwise the following doesn't
    111 # function as regression test for PR30369.
    112 
    113 gdb_test "print &foo_end == &bar_label" " = 1"
    114 
    115 # Check that the breakpoint is set at the expected address.  Regression test
    116 # for PR30369.
    117 
    118 gdb_assert { $break_addr < $bar_label_addr }
    119