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      1 // Copyright 2013, ARM Limited
      2 // All rights reserved.
      3 //
      4 // Redistribution and use in source and binary forms, with or without
      5 // modification, are permitted provided that the following conditions are met:
      6 //
      7 //   * Redistributions of source code must retain the above copyright notice,
      8 //     this list of conditions and the following disclaimer.
      9 //   * Redistributions in binary form must reproduce the above copyright notice,
     10 //     this list of conditions and the following disclaimer in the documentation
     11 //     and/or other materials provided with the distribution.
     12 //   * Neither the name of ARM Limited nor the names of its contributors may be
     13 //     used to endorse or promote products derived from this software without
     14 //     specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
     17 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     18 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     19 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
     20 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     22 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     23 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26 
     27 #include "examples.h"
     28 
     29 // This is an interactive example, not to be used for testing.
     30 #ifndef TEST_EXAMPLES
     31 
     32 #define BUF_SIZE (4096)
     33 #define __ masm->
     34 
     35 // The aim is to let the user "play" with the debugger. Brk will trigger the
     36 // debugger shell.
     37 void GenerateBreak(MacroAssembler* masm) {
     38   Label hop;
     39   __ Brk();
     40   __ Nop();
     41   __ B(&hop);
     42   __ Nop();
     43   __ Bind(&hop);
     44   __ Mov(x1, 123);
     45   __ Mov(x2, 456);
     46   __ Add(x0, x1, x2);
     47   __ Ret();
     48 }
     49 
     50 
     51 int main(void) {
     52   // Create and initialize the assembler and the debugger.
     53   byte assm_buf[BUF_SIZE];
     54   MacroAssembler masm(assm_buf, BUF_SIZE);
     55   Decoder decoder;
     56   Debugger debugger(&decoder);
     57 
     58   // Generate the code for the example function.
     59   Label start;
     60   masm.Bind(&start);
     61   GenerateBreak(&masm);
     62   masm.FinalizeCode();
     63 
     64   // Run the example function.
     65   debugger.RunFrom(start.target());
     66   printf("Debugger example run\n");
     67 
     68   return 0;
     69 }
     70 #endif
     71