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Implement many process syscalls.

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This commit is contained in:
Yifan Wu 2020-12-10 11:57:26 +08:00
parent 81bef97f09
commit 3642f9c56d
20 changed files with 383 additions and 88 deletions
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6
os/src/config.rs
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@ -7,12 +7,6 @@ pub const PAGE_SIZE_BITS: usize = 0xc;
pub const TRAMPOLINE: usize = usize::MAX - PAGE_SIZE + 1;
pub const TRAP_CONTEXT: usize = TRAMPOLINE - PAGE_SIZE;
/// Return (bottom, top) of a kernel stack in kernel space.
pub fn kernel_stack_position(app_id: usize) -> (usize, usize) {
let top = TRAMPOLINE - app_id * (KERNEL_STACK_SIZE + PAGE_SIZE);
let bottom = top - KERNEL_STACK_SIZE;
(bottom, top)
}
#[cfg(feature = "board_k210")]
pub const CPU_FREQ: usize = 10000000;