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.option norvc
.global _entry
.global fromhost
.global tohost
.text
_entry:
la t0, exception_handler
csrw mtvec, t0
la t0, SNIPPY_ENTRY
jalr t0
j exit
exception_handler:
csrr x10, mcause
# In case of breakpoint (Interrupt = 0, Exception code = 3) we finalize.
# Otherwise it's not the expected behavior and we go into an infinite loop.
li x11, 3
beq x10, x11, exit
j infinite_loop
exit:
li ra, 1
la sp, tohost
sw ra, 0(sp)
infinite_loop:
j infinite_loop
.balign 64
tohost:
.8byte 0x0
fromhost:
.8byte 0x0
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