gdb/testsuite/lib/dtrace.exp

   1 # Copyright 2014-2017 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 # Generate a test program containing DTrace USDT probes, whose sources
  17 # are ${srcfile} and ${testfile}.d.  The sequence of commands used to
  18 # generate the test program is:
  19 #
  20 # 1. Generate a header file from ${testfile}.d using dtrace -h.
  21 # 2. Compile ${srcfile}.c.
  22 # 3. Generate an object file containing a DOF program using dtrace -G.
  23 # 4. Link everything together to get the test program.
  24 #
  25 # Note that if DTrace is not found in the host system then this
  26 # function uses the pdtrace implementation, which is located at
  27 # testsuite/lib/pdtrace.
  28 #
  29 # This function requires 'testfile', 'srcfile' and 'binfile' to be
  30 # properly set.
  31 #
  32 # This function returns -1 on failure, 0 otherwise
  33 proc dtrace_build_usdt_test_program {} {
  34     global testfile hex objdir srcdir srcfile subdir binfile
  35
  36     # Make sure that dtrace is installed, it is the real one (not the
  37     # script installed by SystemTap, for example) and of the right
  38     # version (>= 0.4.0).  If it is not then use pdtrace instead.
  39     set dtrace "dtrace"
  40     set result [remote_exec host "$dtrace -V"]
  41     if {[lindex $result 0] != 0 || ![regexp {^dtrace: Sun D [0-9]\.[0-9]\.[0-9]} [lindex $result 1]]} {
  42         set dtrace "${objdir}/lib/pdtrace"
  43     }
  44     set dscript_file "${srcdir}/${subdir}/${testfile}.d"
  45
  46     # 1. Generate a header file from testprogram.d using dtrace -h.
  47     set out_header_file [standard_output_file "${testfile}.h"]
  48     set result [remote_exec host "$dtrace -h -s $dscript_file -o $out_header_file"]
  49     verbose -log [lindex $result 1]
  50     if {[lindex $result 0] != 0} {
  51         return -1
  52     }
  53
  54     # 2. Compile testprogram.c.
  55     set options [list debug additional_flags=-I[file dirname $out_header_file]]
  56     if {[gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}.o" object ${options}] != ""} {
  57         return -1
  58     }
  59
  60     # 3. Generate an object file containing a DOF program using dtrace -G.
  61     set result [remote_exec host "$dtrace -G -s $dscript_file -o ${binfile}-p.o ${binfile}.o"]
  62     verbose -log [lindex $result 1]
  63     if {[lindex $result 0] != 0} {
  64         return -1
  65     }
  66
  67     # 4. Link everything together to get the test program.
  68     if {[gdb_compile "${binfile}.o ${binfile}-p.o" ${binfile} executable {debug}] != ""} {
  69         return -1
  70     }
  71 }