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add comments for qemu-exit

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Yu Chen 2022-05-15 17:37:23 +08:00
parent a85cb98743
commit ca997784ab
1 changed files with 1 additions and 1 deletions
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os/src/boards/qemu.rs
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@ -45,7 +45,7 @@ pub fn irq_handler() {
plic.complete(0, IntrTargetPriority::Supervisor, intr_src_id);
}
//ref:: https://github.com/andre-richter/qemu-exit
use core::arch::asm;
const EXIT_SUCCESS: u32 = 0x5555; // Equals `exit(0)`. qemu successful exit