# Copyright (C) 2013 Free Software Foundation, Inc.
#
# This file is part of DejaGnu.
#
# DejaGnu 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.
#
# DejaGnu 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 DejaGnu; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.

# Contributed by Steve Ellcey <sellcey@mips.com>.

# With the generic-sim.exp baseboard I would test GCC with something
# like:
#   export DEJAGNU_SIM_LINK_FLAGS="-Wl,--dynamic-linker=/local/home/sellcey/nightly/install-mips-mti-linux-gnu/sysroot-mips-mti-linux-gnu/usr/lib/ld-2.17.90.so -Wl,-rpath=/local/home/sellcey/nightly/install-mips-mti-linux-gnu/sysroot-mips-mti-linux-gnu/usr/lib:/local/home/sellcey/nightly/install-mips-mti-linux-gnu/mips-mti-linux-gnu/lib"
#   make check RUNTESTFLAGS="--target_board=generic-sim"
#
# With multi-sim.exp I can skip the export and just do:
#   make check RUNTESTFLAGS="--target_board=multi-sim"
#
# And I can also do this now:
#   make check RUNTESTFLAGS="--target_board=multi-sim\{-EB,-EL\}\{-mhard-float,-msoft-float\}"

# Use env to check env. variables and modify the simulator.
global env
global SIM

# Load the generic configuration for this board. This will define a basic
# set of routines needed by the tool to communicate with the board.
load_generic_config "sim"

# basic-sim.exp is a basic description for the standard Cygnus simulator.
load_base_board_description "basic-sim"

proc get_library_dirlist { args } {
    global board
    set compiler "[board_info $board compiler]"
    set mflags "[board_info $board multilib_flags]"
    set result [remote_exec host "$compiler $mflags --print-search-dirs"]
    set regresult [regexp {(libraries: =)(\S*)} $result dummy1 dummy2 libdirlist]
    if {$regresult == 0} {
	perror "Could not find compilers library search path."
    }
    return [split $libdirlist :]
}

proc dynamic_linker_flag { args } {
    global board
    set compiler "[board_info $board compiler]"
    set mflags "[board_info $board multilib_flags]"
    foreach i [get_library_dirlist] {
	set dynlinker [glob -nocomplain -directory $i ld-*.so]
	if { $dynlinker != "" } break
    }
    verbose "dynamic_linker_flag: -Wl,--dynamic-linker=$dynlinker"
    return "-Wl,--dynamic-linker=$dynlinker"
}

proc rpath_flags { args } {
    global board
    set compiler "[board_info $board compiler]"
    set mflags "[board_info $board multilib_flags] [libgloss_include_flags] [newlib_include_flags] [libgloss_link_flags] [libgloss_link_flags]"
    set rpathflags ""
    set gccpath [get_multilibs]
    foreach i {libgcc_s.so  libstdc++.so libgfortran.so libatomic.so libgomp.so} {
	set result [remote_exec host "$compiler $mflags --print-file-name=$i"]
	set output [lindex $result 1]
	set rpathdir [file dirname $output]
	# If testing an installed compiler, --print-file-name  will find the
	# libraries, if testing a built but not installed compiler it will not
	# find libraries like libstdc++.so or libgfortran.so so we add the
	# extra hack/search so it can work.
	if {[string match "." $rpathdir]} {
	    if {[string match $i "libstdc++.so"]} {
		if {[file exists "$gccpath/libstdc++-v3/src/.libs/libstdc++.so"]} {
		    set rpathflags "$rpathflags -Wl,-rpath=$gccpath/libstdc++-v3/src/.libs"
		}
	    }
	    if {[string match $i "libgfortran.so"]} {
		if {[file exists "$gccpath/libgfortran/.libs/libgfortran.so"]} {
		    set rpathflags "$rpathflags -Wl,-rpath=$gccpath/libgfortran/.libs"
		}
	    }
	    if {[string match $i "libatomic.so"]} {
		if {[file exists "$gccpath/libatomic/.libs/libatomic.so"]} {
		    set rpathflags "$rpathflags -Wl,-rpath=$gccpath/libatomic/.libs"
		}
	    }
	    if {[string match $i "libgomp.so"]} {
		if {[file exists "$gccpath/libgomp/.libs/libgomp.so"]} {
		    set rpathflags "$rpathflags -Wl,-rpath=$gccpath/libgomp/.libs"
		}
	    }
	} else {
	    set rpathflags "$rpathflags -Wl,-rpath=$rpathdir"
	}
    }
    foreach i [get_library_dirlist] {
	set rpathflags "$rpathflags -Wl,-rpath=$i"
    }
    verbose "rpath_flags: $rpathflags"
    return $rpathflags
}

# The TCL SIM variable takes precedence over the DEJAGNU_SIM env. variable
if {[info exists env(DEJAGNU_SIM)] && ![info exists SIM]} {
    set SIM $env(DEJAGNU_SIM)
}

# This tells it which directory to look in for the simulator.
setup_sim sim

# No multilib flags are set by default.
if {[info exists env(DEJAGNU_SIM_MULTILIB_OPTIONS)]} {
    process_multilib_options "$env(DEJAGNU_SIM_MULTILIB_OPTIONS)"
} else {
    process_multilib_options ""
}

# The compiler used to build for this board. This has *nothing* to do
# with what compiler is tested if we're testing gcc.
if {[info exists env(DEJAGNU_SIM_GCC)]} {
    set_board_info compiler "$env(DEJAGNU_SIM_GCC)"
} else {
    set_board_info compiler "[find_gcc]"
}

if {[info exists env(DEJAGNU_SIM_INCLUDE_FLAGS)]} {
    set_board_info cflags "[libgloss_include_flags] [newlib_include_flags] $env(DEJAGNU_SIM_INCLUDE_FLAGS)"
} else {
    set_board_info cflags "[libgloss_include_flags] [newlib_include_flags]"
}
if {[info exists env(DEJAGNU_SIM_LINK_FLAGS)]} {
    set_board_info ldflags "[libgloss_link_flags] [newlib_link_flags] [dynamic_linker_flag] [rpath_flags] $env(DEJAGNU_SIM_LINK_FLAGS)"
} else {
    set_board_info ldflags "[libgloss_link_flags] [newlib_link_flags] [dynamic_linker_flag] [rpath_flags]"
}
if {[info exists env(DEJAGNU_SIM_LDSCRIPT)]} {
    set_board_info ldscript "$env(DEJAGNU_SIM_LDSCRIPT)"
}
if {[info exists env(DEJAGNU_SIM_OPTIONS)]} {
    set_board_info sim,options "$env(DEJAGNU_SIM_OPTIONS)"
}

if {[info exists env(DEJAGNU_SIM_BOARD_INFO)]} {
    foreach e $env(DEJAGNU_SIM_BOARD_INFO) {
	set_board_info [lindex $e 0] [lindex $e 1]
    }
}