| // 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_AARCH32 |
| // There is no simulator defined for VIXL AArch32. |
| #else |
| byte* code = masm.GetBuffer()->GetStartAddress<byte*>(); |
| uint32_t code_size = masm.GetSizeOfCodeGenerated(); |
| 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 |
