58 lines
1.2 KiB
Rust
58 lines
1.2 KiB
Rust
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//! Interrupt instructions
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pub mod exception;
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pub mod irq;
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pub mod syscall;
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/// Clear interrupts
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#[inline(always)]
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pub unsafe fn disable() {
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asm!("cli" : : : : "intel", "volatile");
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}
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/// Set interrupts
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#[inline(always)]
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pub unsafe fn enable() {
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asm!("sti" : : : : "intel", "volatile");
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}
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/// Set interrupts and halt
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#[inline(always)]
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pub unsafe fn enable_and_halt() {
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asm!("sti
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hlt"
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: : : : "intel", "volatile");
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}
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/// Halt instruction
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#[inline(always)]
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pub unsafe fn halt() {
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asm!("hlt" : : : : "intel", "volatile");
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}
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/// Pause instruction
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/// Safe because it is similar to a NOP, and has no memory effects
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#[inline(always)]
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pub fn pause() {
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unsafe { asm!("pause" : : : : "intel", "volatile"); }
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}
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/// Get a stack trace
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//TODO: Check for stack being mapped before dereferencing
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#[inline(never)]
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pub unsafe fn stack_trace() {
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let mut rbp: usize;
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asm!("xchg bx, bx" : "={rbp}"(rbp) : : : "intel", "volatile");
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println!("TRACE: {:>016X}", rbp);
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//Maximum 64 frames
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for _frame in 0..64 {
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let rip = *(rbp as *const usize).offset(1);
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println!(" {:>016X}: {:>016X}", rbp, rip);
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if rip == 0 {
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break;
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}
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rbp = *(rbp as *const usize);
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}
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}
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