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Diffstat (limited to 'examples/aarch32/getting-started.cc')
| -rw-r--r-- | examples/aarch32/getting-started.cc | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/examples/aarch32/getting-started.cc b/examples/aarch32/getting-started.cc new file mode 100644 index 00000000..e7c78232 --- /dev/null +++ b/examples/aarch32/getting-started.cc @@ -0,0 +1,68 @@ +// 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 GenerateDemo(MacroAssembler* masm) { + // uint32_t demo(uint32_t x) + + // Load a constant in r1 using the literal pool. + __ Ldr(r1, 0x12345678); + __ And(r0, r0, r1); + __ Bx(lr); +} + + +#ifndef TEST_EXAMPLES +int main() { + MacroAssembler masm; + // Generate the code for the example function. + Label demo; + // Tell the macro assembler that the label "demo" refer to the current + // location in the buffer. + masm.Bind(&demo); + GenerateDemo(&masm); + // Ensure that everything is generated and that the generated buffer is + // ready to use. + masm.FinalizeCode(); +#ifdef VIXL_INCLUDE_SIMULATOR +// There is no simulator defined for VIXL AArch32. +#else + byte* code = masm.GetBuffer().GetBuffer(); + uint32_t code_size = masm.GetBuffer().GetSizeInBytes(); + ExecutableMemory memory(code, code_size); + // Run the example function. + uint32_t (*demo_function)(uint32_t) = + memory.GetEntryPoint<uint32_t (*)(uint32_t)>(demo); + uint32_t input_value = 0x89abcdef; + uint32_t output_value = (*demo_function)(input_value); + printf("native: demo(0x%08x) = 0x%08x\n", input_value, output_value); +#endif + return 0; +} +#endif // TEST_EXAMPLES |