// SPDX-FileCopyrightText: © 2022 Leo Moser <https://codeberg.org/mole99>
// SPDX-License-Identifier: GPL-3.0-or-later

#define CSR_MHARTID 0xF14

.global main
.global _stack

.section .reset_vector

reset_vector:
	j start
	
.section .text

start:
	// Clear all registers
	addi x1, zero, 0
	addi x2, zero, 0
	addi x3, zero, 0
	addi x4, zero, 0
	addi x5, zero, 0
	addi x6, zero, 0
	addi x7, zero, 0
	addi x8, zero, 0
	addi x9, zero, 0
	addi x10, zero, 0
	addi x11, zero, 0
	addi x12, zero, 0
	addi x13, zero, 0
	addi x14, zero, 0
	addi x15, zero, 0
	addi x16, zero, 0
	addi x17, zero, 0
	addi x18, zero, 0
	addi x19, zero, 0
	addi x20, zero, 0
	addi x21, zero, 0
	addi x22, zero, 0
	addi x23, zero, 0
	addi x24, zero, 0
	addi x25, zero, 0
	addi x26, zero, 0
	addi x27, zero, 0
	addi x28, zero, 0
	addi x29, zero, 0
	addi x30, zero, 0
	addi x31, zero, 0

    // Initialize stack pointer
    la sp, _stack

    // Set the machine hart id as first argument
    csrr a0, CSR_MHARTID

	// Call main
	call main

	// Trap
	ebreak
	
	// Infinite loop
	loop:
        j loop