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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