#define STACK_SIZE 0x3000
        .extern __tp
        .extern __gp
        .extern __sbss
        .extern __ebss

        .global	_start
        .global _hw_init
        .global _gcc_init
        .global _end_gcc_init        
        .global _endless_loop
        
	.section .intptr

/* This is the ROM vector table.  All vectors in this table 
   exception the reset vector just jump directly to the
   equivalent interrupt service routine */
_start:	
	/* 0x0000: Reset */
	.org 	0x000
	movhi	hi(_hw_init), r0, r2
	ori	lo(_hw_init), r2, r2
	jmp	[r2]
	
	/* 0x0010: NMI */
	.org	0x010
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0020: INTWDT */
	.org	0x020
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0040: TRAP0n  */
	.org	0x040
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0050: Trap1n */
	.org	0x050
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0060: ILGOP */
	.org	0x060
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0080: INTWDTM */
	.org	0x080
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0090: INTP0 */
	.org	0x090
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x00A0: INTP1 */
	.org	0x0A0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x00B0: INTP2 */
	.org	0x0B0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x00C0: INTP3 */
	.org	0x0C0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x00D0: INTP4 */
	.org	0x0D0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x00E0: INTP5 */
	.org	0x0E0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x00F0: INTP6 */
	.org	0x0F0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0100: INTCSI4 */
	.org	0x100
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0110: INTAD */
	.org	0x110
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0120: INTDMA0 */
	.org	0x120
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0130: INTDMA1 */
	.org	0x130
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0140: INTDMA2 */
	.org	0x140
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0150: INTTM00 */
	.org	0x150
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0160: INTTM01 */
	.org	0x160
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0170: INTTM10 */
	.org	0x170
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0180: INTTM11 */
	.org	0x180
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0190: INTTM2 */
	.org	0x190
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x01A0: INTTM3 */
	.org	0x1A0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x01B0: INTTM4 */
	.org	0x1B0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x01C0: INTTM5 */
	.org	0x1C0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x01D0: INTWTN */
	.org	0x1D0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x01E0: INTWTNI */
	.org	0x1E0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x01F0: INTCSI0 */
	.org	0x1F0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]
 
	/* 0x0200: INTSER0 */
	.org	0x200
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0210: INTCSI1 */
	.org	0x210
	movhi	hi(_ISR_UART0_RX), r0, r2
	ori	lo(_ISR_UART0_RX), r2, r2
	jmp	[r2]

	/* 0x0220: INTST0 */
	.org	0x220
	movhi	hi(_ISR_UART0_TX), r0, r2           
	ori	lo(_ISR_UART0_TX), r2, r2           
	jmp	[r2]                                    

	/* 0x0230: INTKR */
	.org	0x230
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0240: INTCE1 */
	.org	0x240
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0250: INTCR1 */
	.org	0x250
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0260: INTCT1 */
	.org	0x260
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0270: INTCME */
	.org	0x270
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0280: INTTM6 */
	.org	0x280
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]
	
	/* 0x0290: INTTM70 */
	.org	0x290
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x02A0: INTTM71 */
	.org	0x2A0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]
	
	/* 0x02B0: INTSER1 */
	.org	0x2B0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]
	
	/* 0x02C0: INTCSI3 */
	.org	0x2C0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]
	
	/* 0x02D0: INTST1 */
	.org	0x2D0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]
	
	/* 0x02E0: INTDMA3 */
	.org	0x2E0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]
	
	/* 0x02F0: INTDMA4 */
	.org	0x2F0
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]
	
	/* 0x0300: INTDMA5 */
	.org	0x300
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0310: INTCE2 */
	.org	0x310
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]	
	
	/* 0x0320: INTCR2 */
	.org	0x320
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]

	/* 0x0330: INTCT2 */
	.org	0x330
	movhi	hi(_InterruptHandler), r0, r2
	ori	lo(_InterruptHandler), r2, r2
	jmp	[r2]
	

	.text
_hw_init:  
   ei
   jr _gcc_init

/********************************
 *	Settup for gcc
 *	pointers:  tp - text pointer
 *		   gp - global pointer
 *		   sp - stack pointer
 *		   mask reg:  r20 - 0xff
 *			      r21 - 0xffff
 *	exit status is set to r10
 *****************************************************************************/
_gcc_init:
        movea   255, r0, r20
        mov     r0, r21,
        ori     65535, r0, r21
        movhi   hi(_stack), r0, sp
        movea   lo(_stack), sp, sp
        movhi   hi(__ep), r0, ep
        movea   lo(__ep), ep, ep
        movhi   hi(__tp), r0, tp
        ori     lo(__tp), tp, tp
        movhi   hi(__gp), r0, gp
        ori     lo(__gp), gp, gp

        movea   0xff, r0, r20
        mov     r0, r21
        ori     0xFFFF, r0, r21
        ldsr    r0, PSW

        /* clear bss */        
        movhi   hi(__sbss), r0, r13
        ori     lo(__sbss), r13, r13
        movhi   hi(__ebss), r0, r12
        ori     lo(__ebss), r12, r12
        cmp     r12, r13                
        jnl     _end_gcc_init
        
.L1:
        st.w    r0, 0[r13]
        add     4, r13
        cmp     r12, r13
        jl      .L1

_end_gcc_init:

        jarl    _main, r31

_endless_loop:
        jr      _endless_loop       

/******************************************************************************
 *	dummy data declaration for creating sbss section
 *****************************************************************************/
	.sbss

/******************************************************************************
 *	create stack section
 *****************************************************************************/

        .section .stack
/*       .fill  STACK_SIZE,1 */
.end