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# Copyright 2009, 2010 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Contributed by Markus Deuling <deuling@de.ibm.com>.
#
# Support library for testing the combined debugger for Linux
# on the Cell Broadband Engine.
# Compile SPU objects.
proc gdb_compile_cell_spu {source dest type options} {
global board
# Save and unset multilib flags; these are not appropriate
# for the SPU compiler.
set board [target_info name]
set save_multilib_flag [board_info $board multilib_flags]
unset_board_info "multilib_flags"
set options_spu [concat $options [list compiler=spu-gcc]]
set ccout [gdb_compile $source $dest $type $options_spu]
set_board_info multilib_flags $save_multilib_flag
return $ccout
}
# Compile PPU objects. This is just like gdb_compile_pthreads, except that we
# always add the libspe2 library for compiling Cell/B.E. programs.
proc gdb_compile_cell_ppu {source dest type options} {
# We do not need to try multiple names for the pthread library
# -lpthread works on all Cell/B.E. systems
set lib "-lspe2 -lpthread"
set options_ppu [concat $options [list libs=$lib]]
return [gdb_compile $source $dest $type $options_ppu]
}
# Embed SPU executable into a PPU object.
proc gdb_cell_embedspu {source dest options} {
global CC_FOR_TARGET
if [info exists CC_FOR_TARGET] {
set compiler $CC_FOR_TARGET
} else {
set compiler [board_info [target_info name] compiler]
}
# We assume the PPU compiler is called gcc or ppu-gcc,
# and find the appropriate embedspu based on that.
regsub gcc "$compiler" embedspu embedspu
# Determine default embedded symbol name from source filename.
set path [split "$source" /]
set filename [lindex $path [expr [llength $path] - 1]]
regsub -all -- "\[-\.\]" "$filename" "_" symbol
set options_embed [concat $options [list compiler=$embedspu]]
return [gdb_compile "$symbol $source $dest" "" none $options_embed]
}
# Run a test on the target to see if it supports Cell/B.E. hardware.
# Return 0 if so, 1 if it does not.
proc skip_cell_tests {} {
global skip_cell_tests_saved
global srcdir subdir gdb_prompt
# Use the cached value, if it exists.
set me "skip_cell_tests"
if [info exists skip_cell_tests_saved] {
verbose "$me: returning saved $skip_cell_tests_saved" 2
return $skip_cell_tests_saved
}
# Set up, compile, and execute a combined Cell/B.E. test program.
# Include the current process ID in the file names to prevent conflicts
# with invocations for multiple testsuites.
set src cell[pid].c
set exe cell[pid].x
set src_spu cell[pid]-spu.c
set exe_spu cell[pid]-spu.x
set f [open $src "w"]
puts $f "#include <libspe2.h>"
puts $f "extern spe_program_handle_t cell[pid]_spu_x;"
puts $f "int main (void) {"
puts $f "unsigned int entry = SPE_DEFAULT_ENTRY;"
puts $f "spe_context_ptr_t ctx = spe_context_create (0, NULL);"
puts $f "spe_program_load (ctx, &cell[pid]_spu_x);"
puts $f "return spe_context_run (ctx, &entry, 0, NULL, NULL, NULL); }"
close $f
set f [open $src_spu "w"]
puts $f "int main (void) { return 0; }"
close $f
verbose "$me: compiling testfile $src" 2
set compile_flags {debug nowarnings quiet}
set skip 0
if { [gdb_compile_cell_spu $src_spu $exe_spu executable $compile_flags] != "" } {
verbose "$me: compiling spu binary failed, returning 1" 2
set skip 1
}
if { ! $skip && [gdb_cell_embedspu $exe_spu $exe_spu-embed.o $compile_flags] != "" } {
verbose "$me: embedding spu binary failed, returning 1" 2
set skip 1
}
if { ! $skip && [gdb_compile_cell_ppu [list $src $exe_spu-embed.o] $exe executable $compile_flags] != "" } {
verbose "$me: compiling ppu binary failed, returning 1" 2
set skip 1
}
file delete $src
file delete $src_spu
file delete $exe_spu
file delete $exe_spu-embed.o
if { $skip } {
return [set skip_cell_tests_saved 1]
}
# Compilation succeeded so now run it via gdb.
gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load "$exe"
gdb_run_cmd
gdb_expect {
-re ".*Program exited normally.*${gdb_prompt} $" {
verbose -log "\n$me: Cell/B.E. hardware detected"
set skip_cell_tests_saved 0
}
-re ".*Program exited with code.*${gdb_prompt} $" {
verbose -log "\n$me: Cell/B.E. hardware not detected"
set skip_cell_tests_saved 1
}
default {
verbose -log "\n$me Cell/B.E. hardware not detected (default case)"
set skip_cell_tests_saved 1
}
}
gdb_exit
remote_file build delete $exe
verbose "$me: returning $skip_cell_tests_saved" 2
return $skip_cell_tests_saved
}
# Delete all breakpoints and stop on the next new SPU thread
proc cont_spu_main { } {
delete_breakpoints
gdb_test "set spu stop-on-load on"
gdb_test "continue" \
"Continuing.*Temporary breakpoint .*main .*" \
"continue to SPU main"
}
# Continue to MARKER
proc c_to { marker srcfile } {
set line [gdb_get_line_number $marker $srcfile]
gdb_test "break $line" \
"Breakpoint.*at.*file.*$srcfile.*line $line.*" \
"break $line"
gdb_test "continue" \
"Continuing.*Breakpoint.*at.*$srcfile.*$line.*" \
"continue to $line"
}
# Check if the current thread has SPU architecture
proc check_spu_arch { msg } {
if { $msg == "" } {
set msg "spu architecture is spu256K"
}
gdb_test "show architecture" \
"The target architecture is set automatically.*currently spu:256K.*" \
$msg
}