1b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen//===-- main.c --------------------------------------------------*- C++ -*-===// 2b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// 3b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// The LLVM Compiler Infrastructure 4b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// 5b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// This file is distributed under the University of Illinois Open Source 6b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// License. See LICENSE.TXT for details. 7b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// 8b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen//===----------------------------------------------------------------------===// 9b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen#include <stdio.h> 10b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 11b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// This simple program is to demonstrate the capability of the lldb command 12b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// "breakpoint command add" to add a set of commands to a breakpoint to be 13b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// executed when the breakpoint is hit. 14b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// 15b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// In particular, we want to break within c(), but only if the immediate caller 16b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen// is a(). 17b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 18b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chenint a(int); 19b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chenint b(int); 20b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chenint c(int); 21b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 22b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chenint a(int val) 23b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen{ 24b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen if (val <= 1) 25b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen return b(val); 26b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen else if (val >= 3) 27b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen return c(val); // Find the line number where c's parent frame is a here. 28b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 29b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen return val; 30b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen} 31b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 32b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chenint b(int val) 33b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen{ 34b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen return c(val); 35b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen} 36b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 37b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chenint c(int val) 38b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen{ 39b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen return val + 3; 40b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen} 41b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 42b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chenint main (int argc, char const *argv[]) 43b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen{ 44b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen int A1 = a(1); // a(1) -> b(1) -> c(1) 45b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen printf("a(1) returns %d\n", A1); 46b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 47b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen int B2 = b(2); // b(2) -> c(2) 48b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen printf("b(2) returns %d\n", B2); 49b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 50b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen int A3 = a(3); // a(3) -> c(3) 51b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen printf("a(3) returns %d\n", A3); 52b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen 53b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen return 0; 54b883d17a9b85c07bf47a55d40b7f6061778f0fc7Johnny Chen} 55