--
--	V800 (V810,V850,V830,V850E) Language Independent Library
--
--	Copyright (C) 1983-2000 by Green Hills Software Inc.
--
--	This program is the property of Green Hills Software, Inc,
--	its contents are proprietary information and no part of it
--	is to be disclosed to anyone except employees of Green Hills
--	Software, Inc., or as agreed in writing signed by the President
--	of Green Hills Software, Inc.
--
-- reset handler for V800

#ifdef EMBEDDED

#include "ind_800.h"

	.file	"ind_reset.800"

#if defined(__ELF)
	.section ".reset", "ax"
#else
	.section ".reset", .text
#endif
	
	.weak __ghs_rambootcodestart
	.weak __ghs_rombootcodestart
	.weak __ghs_rombootcodeend

	.globl __ghs_reset_handler
__ghs_reset_handler:
	-- assumes ROM always lower address than RAM
	-- therefore must check if ROM exists.
	movhi	HI(__ghs_rambootcodestart),zero,r12
	movea	lo(__ghs_rambootcodestart),r12,r12
	movhi	HI(__ghs_rombootcodestart),zero,r13
	movea	lo(__ghs_rombootcodestart),r13,r13
	movhi	HI(__ghs_rombootcodeend),zero,r15
	movea	lo(__ghs_rombootcodeend),r15,r15
	cmp 	r15, r13
	be	done			-- if no ROM, then done
	movhi	HI(_start),zero,r14
	movea	lo(_start),r14,r14
	cmp	r12, r14		
	bc 	done			-- if _start < rambootcodestart then done
	-- load ROM address of _start
	sub	r12, r14		-- _start -= rambootcodestart
	add	r13, r14		-- _start += rombootcodestart
done:
	jmp 	r14	

#endif	/* EMBEDDED */