143 lines
5.3 KiB
C++
143 lines
5.3 KiB
C++
/*
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* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <algorithm>
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#include <iostream>
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#include "output_format.h"
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#include "pio_disassembler.h"
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struct c_sdk_output : public output_format {
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struct factory {
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factory() {
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output_format::add(new c_sdk_output());
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}
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};
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c_sdk_output() : output_format("c-sdk") {}
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std::string get_description() override {
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return "C header suitable for use with the Pico SDK";
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}
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void output_symbols(FILE *out, std::string prefix, const std::vector<compiled_source::symbol> &symbols) {
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int count = 0;
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for (const auto &s : symbols) {
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if (!s.is_label) {
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fprintf(out, "#define %s%s %d\n", prefix.c_str(), s.name.c_str(), s.value);
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count++;
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}
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}
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if (count) {
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fprintf(out, "\n");
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count = 0;
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}
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for (const auto &s : symbols) {
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if (s.is_label) {
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fprintf(out, "#define %soffset_%s %du\n", prefix.c_str(), s.name.c_str(), s.value);
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count++;
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}
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}
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if (count) {
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fprintf(out, "\n");
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}
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}
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void header(FILE *out, std::string msg) {
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std::string dashes = std::string(msg.length(), '-');
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fprintf(out, "// %s //\n", dashes.c_str());
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fprintf(out, "// %s //\n", msg.c_str());
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fprintf(out, "// %s //\n", dashes.c_str());
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fprintf(out, "\n");
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}
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int output(std::string destination, std::vector<std::string> output_options,
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const compiled_source &source) override {
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for (const auto &program : source.programs) {
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for(const auto &p : program.lang_opts) {
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if (p.first.size() >= name.size() && p.first.compare(0, name.size(), name) == 0) {
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std::cerr << "warning: " << name << " does not support output options; " << p.first << " lang_opt ignored.\n";
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}
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}
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}
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FILE *out = open_single_output(destination);
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if (!out) return 1;
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header(out, "This file is autogenerated by pioasm; do not edit!");
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fprintf(out, "#if !PICO_NO_HARDWARE\n");
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fprintf(out, "#include \"hardware/pio.h\"\n");
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fprintf(out, "#endif\n");
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fprintf(out, "\n");
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output_symbols(out, "", source.global_symbols);
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for (const auto &program : source.programs) {
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header(out, program.name);
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std::string prefix = program.name + "_";
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fprintf(out, "#define %swrap_target %d\n", prefix.c_str(), program.wrap_target);
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fprintf(out, "#define %swrap %d\n", prefix.c_str(), program.wrap);
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fprintf(out, "\n");
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output_symbols(out, prefix, program.symbols);
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fprintf(out, "static const uint16_t %sprogram_instructions[] = {\n", prefix.c_str());
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for (int i = 0; i < (int)program.instructions.size(); i++) {
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const auto &inst = program.instructions[i];
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if (i == program.wrap_target) {
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fprintf(out, " // .wrap_target\n");
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}
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fprintf(out, " 0x%04x, // %2d: %s\n", inst, i,
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disassemble(inst, program.sideset_bits_including_opt.get(), program.sideset_opt).c_str());
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if (i == program.wrap) {
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fprintf(out, " // .wrap\n");
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}
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}
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fprintf(out, "};\n");
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fprintf(out, "\n");
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fprintf(out, "#if !PICO_NO_HARDWARE\n");
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fprintf(out, "static const struct pio_program %sprogram = {\n", prefix.c_str());
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fprintf(out, " .instructions = %sprogram_instructions,\n", prefix.c_str());
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fprintf(out, " .length = %d,\n", (int) program.instructions.size());
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fprintf(out, " .origin = %d,\n", program.origin.get());
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fprintf(out, "};\n");
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fprintf(out, "\n");
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fprintf(out, "static inline pio_sm_config %sprogram_get_default_config(uint offset) {\n", prefix.c_str());
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fprintf(out, " pio_sm_config c = pio_get_default_sm_config();\n");
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fprintf(out, " sm_config_set_wrap(&c, offset + %swrap_target, offset + %swrap);\n", prefix.c_str(),
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prefix.c_str());
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if (program.sideset_bits_including_opt.is_specified()) {
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fprintf(out, " sm_config_set_sideset(&c, %d, %s, %s);\n", program.sideset_bits_including_opt.get(),
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program.sideset_opt ? "true" : "false",
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program.sideset_pindirs ? "true" : "false");
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}
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fprintf(out, " return c;\n");
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fprintf(out, "}\n");
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// todo maybe have some code blocks inside or outside here?
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for(const auto& o : program.code_blocks) {
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fprintf(out, "\n");
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if (o.first == name) {
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for(const auto &contents : o.second) {
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fprintf(out, "%s", contents.c_str());
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fprintf(out, "\n");
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}
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}
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}
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fprintf(out, "#endif\n");
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fprintf(out, "\n");
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}
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if (out != stdout) { fclose(out); }
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return 0;
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}
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};
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static c_sdk_output::factory creator;
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