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sbi spec uses a6, a7 as sbicall id, so we need to set a6 to 0

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Yu Chen 2022-06-22 00:17:50 +08:00
parent 27a535fd03
commit b2682acf40
1 changed files with 1 additions and 0 deletions
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os/src/sbi.rs
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@ -17,6 +17,7 @@ fn sbi_call(which: usize, arg0: usize, arg1: usize, arg2: usize) -> usize {
let mut ret; let mut ret;
unsafe { unsafe {
core::arch::asm!( core::arch::asm!(
"li x16, 0",
"ecall", "ecall",
inlateout("x10") arg0 => ret, inlateout("x10") arg0 => ret,
in("x11") arg1, in("x11") arg1,