orca/ext/wasm3/platforms/embedded/fomu/src/main.c

149 lines
2.8 KiB
C

//
// Wasm3 - high performance WebAssembly interpreter written in C.
//
// Copyright © 2019 Steven Massey, Volodymyr Shymanskyy.
// All rights reserved.
//
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <irq.h>
#include <usb.h>
#include <time.h>
#include <rgb.h>
#include <spi.h>
#include <generated/csr.h>
struct ff_spi *spi;
char *ltoa(long N, char *str, int base);
void uart_write(const char *str, unsigned len) {
if (!usb_can_putc()) return;
while (len) {
while (!usb_can_putc())
usb_poll();
int bytes_written = usb_write(str, len);
str += bytes_written;
len -= bytes_written;
}
}
void uart_print(const char *str) {
uart_write(str, strlen(str));
}
#include "wasm3.h"
#include "extra/fib32.wasm.h"
#define FATAL(func, msg) { \
uart_print("Fatal: " func ": "); \
uart_print(msg); uart_print("\n"); \
return false; }
bool run_wasm()
{
M3Result result = m3Err_none;
uint8_t* wasm = (uint8_t*)fib32_wasm;
size_t fsize = fib32_wasm_len;
uart_print("Loading WebAssembly...\n");
IM3Environment env = m3_NewEnvironment ();
if (!env) FATAL("m3_NewEnvironment", "failed");
IM3Runtime runtime = m3_NewRuntime (env, 1024, NULL);
if (!runtime) FATAL("m3_NewRuntime", "failed");
IM3Module module;
result = m3_ParseModule (env, &module, wasm, fsize);
if (result) FATAL("m3_ParseModule", result);
result = m3_LoadModule (runtime, module);
if (result) FATAL("m3_LoadModule", result);
IM3Function f;
result = m3_FindFunction (&f, runtime, "fib");
if (result) FATAL("m3_FindFunction", result);
uart_print("Running...\n");
result = m3_CallV (f, 24);
if (result) FATAL("m3_Call", result);
uint32_t value = 0;
result = m3_GetResultsV (f, &value);
if (result) FATAL("m3_GetResults", result);
char buff[32];
ltoa(value, buff, 10);
uart_print("Result: ");
uart_print(buff);
uart_print("\n");
return true;
}
__attribute__((section(".ramtext")))
void isr(void)
{
unsigned int irqs;
irqs = irq_pending() & irq_getmask();
if (irqs & (1 << USB_INTERRUPT))
usb_isr();
}
__attribute__((section(".ramtext")))
static void init(void)
{
irq_setmask(0);
irq_setie(1);
usb_init();
time_init();
rgb_init();
}
void m3Yield ()
{
usb_poll();
}
__attribute__((section(".ramtext")))
int main(int argc, char **argv)
{
(void)argc;
(void)argv;
init();
usb_connect();
for (int i = 0; i< 10000; i++) {
usb_poll();
msleep(1);
}
uart_print("\nWasm3 v" M3_VERSION " on Fomu (" M3_ARCH "), build " __DATE__ " " __TIME__ "\n");
rgb_set(0, 0, 255);
if (run_wasm()) {
rgb_set(0, 255, 0);
} else {
rgb_set(255, 0, 0);
}
while (1)
{
usb_poll();
}
return 0;
}