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/* SPDX-License-Identifier: copyleft-next-0.3.1 */
/* Copyright 2021 - 2022, Kim Kuparinen < kimi.h.kuparinen@gmail.com > */
/**
* @file sbi.c
* riscv64 specific OpenSBI handling.
*/
#include "sbi.h"
struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
unsigned long arg1, unsigned long arg2,
unsigned long arg3, unsigned long arg4,
unsigned long arg5)
{
struct sbiret ret;
register uintptr_t a0 __asm__ ("a0") = (uintptr_t)(arg0);
register uintptr_t a1 __asm__ ("a1") = (uintptr_t)(arg1);
register uintptr_t a2 __asm__ ("a2") = (uintptr_t)(arg2);
register uintptr_t a3 __asm__ ("a3") = (uintptr_t)(arg3);
register uintptr_t a4 __asm__ ("a4") = (uintptr_t)(arg4);
register uintptr_t a5 __asm__ ("a5") = (uintptr_t)(arg5);
register uintptr_t a6 __asm__ ("a6") = (uintptr_t)(fid);
register uintptr_t a7 __asm__ ("a7") = (uintptr_t)(ext);
__asm__ volatile ("ecall"
: "+r" (a0), "+r" (a1)
: "r" (a2), "r" (a3), "r" (a4), "r" (a5), "r" (a6),
"r" (a7)
: "memory");
ret.error = a0;
ret.value = a1;
return ret;
}
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