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https://github.com/ferrous-systems/embedded-trainings-2020.git
synced 2024-05-23 02:38:07 +00:00
35 lines
713 B
Rust
35 lines
713 B
Rust
#![no_main]
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#![no_std]
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use cortex_m::asm;
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use cortex_m_rt::entry;
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use panic_log as _; // panic handler
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#[entry]
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fn main() -> ! {
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// board initialization
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dk::init().unwrap();
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log::info!("provoking stack overflow...");
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spam(0);
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loop {
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asm::bkpt();
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}
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}
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#[inline(never)]
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fn spam(n: u32) {
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// allocate and initialize 4 kilobytes of stack memory to provoke stack overflow
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let use_stack = [n; 1024];
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log::info!(
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"address of current `use_stack` at recursion depth {:?}: {:?}",
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use_stack[1023], // "use" use_stack to prevent it from being optimized out
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&use_stack as *const u32
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);
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let next = n + 1;
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spam(next); // infinite recursion
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}
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