26 lines
570 B
Rust
26 lines
570 B
Rust
#![no_std]
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#![no_main]
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#[macro_use]
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extern crate user_lib;
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use user_lib::mmap;
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/*
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理想结果：程序触发访存异常，被杀死。不输出 error 就算过。
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*/
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#[no_mangle]
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fn main() -> i32 {
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let start: usize = 0x10000000;
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let len: usize = 4096;
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let prot: usize = 2;
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assert_eq!(0, mmap(start, len, prot));
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let addr: *mut u8 = start as *mut u8;
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unsafe {
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// *addr = start as u8; // can't write, R == 0 && W == 1 is illegal in riscv
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assert!(*addr != 0);
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}
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println!("Should cause error, Test 04_2 fail!");
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0
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}
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