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200 lines
4.5 KiB
C++
200 lines
4.5 KiB
C++
/**
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* @file stmdsp_code.hpp
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* @brief Source code and build scripts for stmdsp device algorithms.
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*
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* Copyright (C) 2021 Clyne Sullivan
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*
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* Distributed under the GNU GPL v3 or later. You should have received a copy of
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* the GNU General Public License along with this program.
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* If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef STMDSP_CODE_HPP
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#define STMDSP_CODE_HPP
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#ifdef STMDSP_WIN32
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#define NEWLINE "\r\n"
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#define COPY "copy"
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#else
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#define NEWLINE "\n"
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#define COPY "cp"
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#endif
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namespace stmdsp {
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// $0 = temp file name
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// TODO try -ffunction-sections -fdata-sections -Wl,--gc-sections
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static std::string makefile_text_h7 =
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#ifdef STMDSP_WIN32
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"echo off" NEWLINE
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#endif
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"arm-none-eabi-g++ -x c++ -Os -std=c++20 -fno-exceptions -fno-rtti "
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"-mcpu=cortex-m7 -mthumb -mfloat-abi=hard -mfpu=fpv5-d16 -mtune=cortex-m7 "
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"-nostartfiles "
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"-Wl,-Ttext-segment=0x00000000 -Wl,-zmax-page-size=512 -Wl,-eprocess_data_entry "
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"$0 -o $0.o" NEWLINE
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COPY " $0.o $0.orig.o" NEWLINE
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"arm-none-eabi-strip -s -S --strip-unneeded $0.o" NEWLINE
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"arm-none-eabi-objcopy --remove-section .ARM.attributes "
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"--remove-section .comment "
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"--remove-section .noinit "
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"$0.o" NEWLINE
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"arm-none-eabi-size $0.o" NEWLINE;
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static std::string makefile_text_l4 =
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#ifdef STMDSP_WIN32
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"echo off" NEWLINE
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#endif
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"arm-none-eabi-g++ -x c++ -Os -std=c++20 -fno-exceptions -fno-rtti "
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"-mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -mtune=cortex-m4 "
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"-nostartfiles -I$1/cmsis "
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"-Wl,-Ttext-segment=0x10000000 -Wl,-zmax-page-size=512 -Wl,-eprocess_data_entry "
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"$0 -o $0.o" NEWLINE
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COPY " $0.o $0.orig.o" NEWLINE
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"arm-none-eabi-strip -s -S --strip-unneeded $0.o" NEWLINE
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"arm-none-eabi-objcopy --remove-section .ARM.attributes "
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"--remove-section .comment "
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"--remove-section .noinit "
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"$0.o" NEWLINE
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"arm-none-eabi-size $0.o" NEWLINE;
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// $0 = buffer size
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static std::string file_header_h7 = R"cpp(
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#include <cstdint>
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#include <span>
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using Sample = uint16_t;
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using Samples = std::span<Sample, $0>;
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Sample *process_data(Samples samples);
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extern "C" void process_data_entry()
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{
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Sample *samples;
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asm("mov %0, r0" : "=r" (samples));
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process_data(Samples(samples, $0));
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}
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static double PI = 3.14159265358979323846L;
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__attribute__((naked))
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auto sin(double x) {
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asm("vmov.f64 r1, r2, d0;"
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"eor r0, r0;"
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"svc 1;"
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"vmov.f64 d0, r1, r2;"
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"bx lr");
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return 0;
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}
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__attribute__((naked))
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auto cos(double x) {
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asm("vmov.f64 r1, r2, d0;"
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"mov r0, #1;"
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"svc 1;"
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"vmov.f64 d0, r1, r2;"
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"bx lr");
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return 0;
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}
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__attribute__((naked))
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auto tan(double x) {
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asm("vmov.f64 r1, r2, d0;"
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"mov r0, #2;"
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"svc 1;"
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"vmov.f64 d0, r1, r2;"
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"bx lr");
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return 0;
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}
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__attribute__((naked))
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auto sqrt(double x) {
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asm("vsqrt.f64 d0, d0; bx lr");
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return 0;
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}
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auto readalt() {
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Sample s;
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asm("svc 3; mov %0, r0" : "=&r"(s));
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return s;
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}
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// End stmdspgui header code
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)cpp";
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static std::string file_header_l4 = R"cpp(
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#include <cstdint>
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using Sample = uint16_t;
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using Samples = Sample[$0];
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constexpr unsigned int SIZE = $0;
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Sample *process_data(Samples samples);
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extern "C" void process_data_entry()
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{
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Sample *samples;
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asm("mov %0, r0" : "=r" (samples));
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process_data(samples);
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}
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static inline float PI = 3.14159265358979L;
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__attribute__((naked))
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static inline auto sin(float x) {
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asm("vmov.f32 r1, s0;"
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"eor r0, r0;"
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"svc 1;"
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"vmov.f32 s0, r1;"
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"bx lr");
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return 0;
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}
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__attribute__((naked))
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static inline auto cos(float x) {
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asm("vmov.f32 r1, s0;"
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"mov r0, #1;"
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"svc 1;"
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"vmov.f32 s0, r1;"
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"bx lr");
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return 0;
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}
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__attribute__((naked))
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static inline auto tan(float x) {
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asm("vmov.f32 r1, s0;"
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"mov r0, #2;"
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"svc 1;"
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"vmov.f32 s0, r1;"
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"bx lr");
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return 0;
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}
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__attribute__((naked))
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static inline auto sqrt(float) {
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asm("vsqrt.f32 s0, s0; bx lr");
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return 0;
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}
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static inline auto param1() {
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Sample s;
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asm("eor r0, r0; svc 3; mov %0, r0" : "=r" (s) :: "r0");
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return s;
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}
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static inline auto param2() {
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Sample s;
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asm("mov r0, #1; svc 3; mov %0, r0" : "=r" (s) :: "r0");
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return s;
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}
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//static inline void puts(const char *s) {
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// // 's' will already be in r0.
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// asm("push {r4-r6}; svc 4; pop {r4-r6}");
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//}
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// End stmdspgui header code
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)cpp";
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static std::string file_content =
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R"cpp(Sample* process_data(Samples samples)
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{
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return samples;
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}
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)cpp";
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} // namespace stmdsp
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#endif // STMDSP_CODE_HPP
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