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fix frame-pointer stackwalking
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aaf2c5ad64
commit
dcccceff24
1 changed files with 12 additions and 1 deletions
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@ -96,7 +96,9 @@ unsafe fn frame_pointer_stack_walk(regs: Registers) -> NativeStack {
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// --dev,
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// or --with-frame-pointer.
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let stackaddr = libc::pthread_get_stackaddr_np(libc::pthread_self());
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let pthread_t = libc::pthread_self();
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let stackaddr = libc::pthread_get_stackaddr_np(pthread_t);
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let stacksize = libc::pthread_get_stacksize_np(pthread_t);
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let mut native_stack = NativeStack::new();
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let pc = regs.instruction_ptr as *mut std::ffi::c_void;
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let stack = regs.stack_ptr as *mut std::ffi::c_void;
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@ -104,6 +106,12 @@ unsafe fn frame_pointer_stack_walk(regs: Registers) -> NativeStack {
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let mut current = regs.frame_ptr as *mut *mut std::ffi::c_void;
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while !current.is_null() {
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if (current as usize) < stackaddr as usize {
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// Reached the end of the stack.
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break;
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}
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if current as usize >= stackaddr.add(stacksize * 8) as usize {
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// Reached the beginning of the stack.
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// Assumining 64 bit mac(see the stacksize * 8).
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break;
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}
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let next = *current as *mut *mut std::ffi::c_void;
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@ -112,6 +120,9 @@ unsafe fn frame_pointer_stack_walk(regs: Registers) -> NativeStack {
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if let Err(()) = native_stack.process_register(*pc, *stack) {
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break;
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}
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if (next <= current) || (next as usize & 3 != 0) {
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break;
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}
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current = next;
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}
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native_stack
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