new baseboard: rx-sim.exp

[DJ Delorie]

The following adds support for the RX simulator (rx-elf) recently
committed to the FSF simulator repository.  Enjoy!

DJ

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set_board_info target_install {rx-elf}

# No support for argument passing
set_board_info noargs 1

# No support for signals either.
set_board_info gdb,nosignals 1

# The simulator does not use the remote protocol, so it can't support the
# remote protocol packets used by GDB's fileio.exp test.
set_board_info gdb,nofileio 1

load_generic_config "sim"

load_base_board_description "basic-sim"

setup_sim rx

process_multilib_options ""

set_board_info compiler  "[find_gcc]";
set_board_info cflags    "[newlib_include_flags] -msim"
set_board_info ldflags   "[libgloss_link_flags] [newlib_link_flags]"

# Used by a few gcc.c-torture testcases to delimit how large the stack can
# be.  Needed for the small integer multilibs.
set_board_info gcc,stack_size  4096