mirror of https://github.com/m-labs/artiq.git
31 lines
739 B
Rust
31 lines
739 B
Rust
#![feature(libc, panic_unwind)]
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#![no_std]
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extern crate unwind;
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extern crate libc;
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use unwind as uw;
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use libc::c_void;
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pub fn backtrace<F>(mut f: F) -> Result<(), uw::_Unwind_Reason_Code>
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where F: FnMut(usize) -> ()
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{
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extern fn trace<F>(context: *mut uw::_Unwind_Context, arg: *mut c_void)
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-> uw::_Unwind_Reason_Code
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where F: FnMut(usize) -> ()
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{
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unsafe {
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let step_fn = &mut *(arg as *mut F);
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step_fn(uw::_Unwind_GetIP(context));
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uw::_URC_NO_REASON
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}
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}
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unsafe {
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match uw::_Unwind_Backtrace(trace::<F>, &mut f as *mut _ as *mut c_void) {
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uw::_URC_NO_REASON => Ok(()),
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err => Err(err)
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}
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}
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}
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