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// Copyright 2014, 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 GenerateSwap4(MacroAssembler* masm) {
// VIXL's macro assembler provides some functions to manipulate the stack.
// This example shows some of these functions.
__ Claim(16);
__ Poke(x0, 0);
__ Poke(x1, 8);
__ Push(x3, x2);
__ Pop(x1, x0);
__ Peek(x3, 0);
__ Peek(x2, 8);
__ Drop(16);
__ Ret();
}
#ifndef TEST_EXAMPLES
#ifdef VIXL_INCLUDE_SIMULATOR
int main(void) {
MacroAssembler masm;
Decoder decoder;
Simulator simulator(&decoder);
// Generate the code for the example function.
Label swap4;
masm.Bind(&swap4);
GenerateSwap4(&masm);
masm.FinalizeCode();
// Run the example function.
simulator.WriteXRegister(0, 0x1111111111111111);
simulator.WriteXRegister(1, 0x2222222222222222);
simulator.WriteXRegister(2, 0x3333333333333333);
simulator.WriteXRegister(3, 0x4444444444444444);
// clang-format off
printf("Before swap4:\n"
"x0 = 0x%" PRIx64 "\n"
"x1 = 0x%" PRIx64 "\n"
"x2 = 0x%" PRIx64 "\n"
"x3 = 0x%" PRIx64 "\n",
simulator.ReadXRegister(0), simulator.ReadXRegister(1),
simulator.ReadXRegister(2), simulator.ReadXRegister(3));
// clang-format on
simulator.RunFrom(masm.GetLabelAddress<Instruction*>(&swap4));
// clang-format off
printf("After swap4:\n"
"x0 = 0x%" PRIx64 "\n"
"x1 = 0x%" PRIx64 "\n"
"x2 = 0x%" PRIx64 "\n"
"x3 = 0x%" PRIx64 "\n",
simulator.ReadXRegister(0), simulator.ReadXRegister(1),
simulator.ReadXRegister(2), simulator.ReadXRegister(3));
// clang-format on
return 0;
}
#else
// Without the simulator there is nothing to test.
int main(void) { return 0; }
#endif // VIXL_INCLUDE_SIMULATOR
#endif // TEST_EXAMPLES
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