# entry.s
.option norvc
.section .data

.section .text.init
.global _entry
_entry:
	# Set global pointer (gp)
	# Important to have relaxation off for this instruction
.option push
.option norelax
	la gp, _global_pointer
.option pop

	# Set thread pointer (tp) to hart id
	csrr tp, mhartid

	# Set stack pointer (sp) for all harts
	la sp, _stack_end
	li t0, 0x10000 # Give each hart plenty of space for their stacks
	mul t0, t0, tp
	sub sp, sp, t0

	# Jump to start if not hart 0
	bnez tp, 2f

	# Prepare BSS section if hart 0
	la t0, _bss_start
	la t1, _bss_end
	bgeu t0, t1, 2f
1:
	sb zero, 0(t0)
	addi t0, t0, 1
	bne t0, t1, 1b
2:
	# Tail call Rust start function
	tail start