* Makefile.in (frv-linux-tdep.o): Add dependencies.

	* Makefile.in (frv-linux-tdep.o): Add dependencies.
	* frv-linux-tdep.c: New file.
	* frv-tdep.c (struct gdbarch_tdep): Add new field
	``sigcontext_reg_addr''.
	(frv_set_sigcontext_reg_addr, frv_sigtramp,frame_cache)
	(frv_sigtramp_frame_this_id, frv_sigtramp_frame_prev_register)
	(frv_sigramp_frame_sniffer): New functions.
	(frv_sigtramp_frame_unwind): New static global.
	(frv_gdbarch_init): Hook in ABI-specific overrides.  Hook up frame
	sniffers.
	* frv-tdep.h (frv_set_sigcontext_reg_addr): New function.
	* config/frv/frv.mt (TDEPFILES): Add frv-linux-tdep.o.