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// Copyright 2016, VIXL authors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of ARM Limited nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "examples.h"
#define __ masm->
void GenerateGradeComment(MacroAssembler* masm) {
// Given a grade 'A', 'B', 'C', 'D' or 'F', print a relevant
// comment.
// void GradeComment(char grade)
Label invalid_input;
__ Subs(r1, r0, 'A');
__ B(lt, &invalid_input);
Label break_switch;
// Manage the cases from 'A' to 'F' included.
// Switch/Case handles inputs from [0, n[
// and here n is 'F' - 'A' + 1 which is 6
// 'E' will be handled in default case.
JumpTable8bitOffset grade_comment('F' - 'A' + 1);
__ Switch(r1, &grade_comment);
__ Case(&grade_comment, 'A' - 'A');
__ Printf("Excellent!!\n");
__ Break(&grade_comment);
__ Case(&grade_comment, 'B' - 'A');
__ Printf("Good job!\n");
__ Break(&grade_comment);
__ Case(&grade_comment, 'C' - 'A');
__ Printf("You passed\n");
__ Break(&grade_comment);
__ Case(&grade_comment, 'D' - 'A');
__ Printf("Could do better\n");
__ Break(&grade_comment);
__ Case(&grade_comment, 'F' - 'A');
__ Printf("You failed!\n");
__ Break(&grade_comment);
__ Default(&grade_comment);
__ Bind(&invalid_input);
__ Printf("Invalid input: %c\n", r0);
__ EndSwitch(&grade_comment);
__ Bx(lr);
}
#ifndef TEST_EXAMPLES
int main() {
MacroAssembler masm;
masm.SetT32(true);
// Generate the code for the example function.
Label entry_point;
masm.Bind(&entry_point);
GenerateGradeComment(&masm);
masm.FinalizeCode();
#ifdef VIXL_INCLUDE_SIMULATOR
// There is no simulator defined for VIXL AArch32.
printf("This example cannot be simulated\n");
#else
byte* code = masm.GetBuffer().GetBuffer();
uint32_t code_size = masm.GetBuffer().GetSizeInBytes();
ExecutableMemory memory(code, code_size);
// Run the example function.
void (*comment_function)(char grade) =
memory.GetEntryPoint<void (*)(char)>(entry_point);
(*comment_function)('A');
(*comment_function)('B');
(*comment_function)('F');
(*comment_function)('E');
(*comment_function)('a');
(*comment_function)('G');
#endif
return 0;
}
#endif // TEST_EXAMPLES
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