.section .init .option norvc .type start, @function .global start start: .cfi_startproc .option push .option norelax la gp, global_pointer .option pop /* Reset satp */ csrw satp, zero /* Setup stack */ la sp, stack_top /* Clear the BSS section */ la t5, bss_start la t6, bss_end bss_clear: sd zero, (t5) addi t5, t5, 8 bgeu t5, t6, bss_clear la t0, _start csrw mepc, t0 /* Jump to kernel! */ tail _start .cfi_endproc .end