From 565724db3b73ee67fa996dab511dc52df586cee1 Mon Sep 17 00:00:00 2001 From: Kimplul Date: Tue, 17 Aug 2021 21:47:38 +0300 Subject: Garbage --- arch/riscv/sbi.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 arch/riscv/sbi.c (limited to 'arch/riscv/sbi.c') diff --git a/arch/riscv/sbi.c b/arch/riscv/sbi.c new file mode 100644 index 0000000..e255ecf --- /dev/null +++ b/arch/riscv/sbi.c @@ -0,0 +1,27 @@ +#include + +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 unsigned long a0 asm("a0") = arg0; + register unsigned long a1 asm("a1") = arg1; + register unsigned long a2 asm("a2") = arg2; + register unsigned long a3 asm("a3") = arg3; + register unsigned long a4 asm("a4") = arg4; + register unsigned long a5 asm("a5") = arg5; + register unsigned long a6 asm("a6") = fid; + register unsigned long a7 asm("a7") = 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; +} -- cgit v1.3