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Rename emulator to host, for clarity

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Toby Jaffey 2025-12-06 22:37:10 +00:00
parent 6d12ce5a80
commit 3e4c87fa1d
21 changed files with 29 additions and 29 deletions
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102
emulator-arduino/emulator-arduino.ino
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@ -1,102 +0,0 @@
#include "config.h"
#include "uvm32.h"
#include "common/uvm32_common_custom.h"
// Precompiled binary program to print integers
// This code expects to print via CSR 0x13C (IOREQ_PRINTD in common/uvm32_common_custom.h)
uint8_t rom[] = {
0x23, 0x26, 0x11, 0x00, 0xef, 0x00, 0x80, 0x00, 0x73, 0x50, 0x80, 0x13,
0x37, 0xf6, 0xff, 0xff, 0xb7, 0x17, 0x00, 0x00, 0x37, 0xe7, 0xff, 0xff,
0x13, 0x05, 0xf0, 0x01, 0xb7, 0x45, 0x00, 0x00, 0x13, 0x06, 0xd6, 0xcc,
0x93, 0x86, 0x37, 0x33, 0x13, 0x07, 0x77, 0xe6, 0x93, 0x87, 0x37, 0xb3,
0x13, 0x08, 0xa0, 0x00, 0x63, 0xcc, 0xc6, 0x06, 0x93, 0x08, 0x07, 0x00,
0x63, 0xc2, 0xe7, 0x06, 0x93, 0x03, 0x00, 0x00, 0x13, 0x03, 0x00, 0x00,
0x13, 0x0e, 0x00, 0x00, 0x93, 0x0e, 0x00, 0x00, 0x93, 0x02, 0x00, 0x02,
0x13, 0x8f, 0x02, 0xfe, 0x63, 0x6e, 0xe5, 0x03, 0x33, 0x0f, 0x73, 0x00,
0x63, 0xea, 0xe5, 0x03, 0x33, 0x8e, 0xce, 0x03, 0xb3, 0x0e, 0x73, 0x40,
0x73, 0x50, 0x90, 0x13, 0x13, 0x5e, 0xbe, 0x40, 0xb3, 0x8e, 0x1e, 0x01,
0x33, 0x0e, 0xce, 0x00, 0x33, 0x83, 0xde, 0x03, 0x13, 0x53, 0xc3, 0x00,
0xb3, 0x03, 0xce, 0x03, 0x93, 0xd3, 0xc3, 0x00, 0x93, 0x82, 0x12, 0x00,
0x6f, 0xf0, 0x5f, 0xfc, 0x73, 0x90, 0x02, 0x14, 0x93, 0x88, 0x18, 0x09,
0xe3, 0xd2, 0x17, 0xfb, 0x73, 0x10, 0x08, 0x14, 0x13, 0x06, 0x96, 0x19,
0xe3, 0xd8, 0xc6, 0xf8, 0x37, 0x05, 0x00, 0x80, 0x13, 0x05, 0x05, 0x0c,
0x73, 0x10, 0xb5, 0x13, 0x67, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x77, 0x6f, 0x72, 0x6c, 0x64, 0x00
};
// Create an identifier for our host handler
typedef enum {
F_PRINTD,
F_PRINTLN,
F_PRINTC,
} f_code_t;
// Map VM ioreq IOREQ_PRINTD (0x13C) to F_PRINTD, tell VM to expect write of a U32
const uvm32_mapping_t env[] = {
{ IOREQ_PRINTD, F_PRINTD, IOREQ_TYP_U32_WR },
{ IOREQ_PRINTC, F_PRINTC, IOREQ_TYP_U32_WR },
{ IOREQ_PRINTLN, F_PRINTLN, IOREQ_TYP_BUF_TERMINATED_WR },
};
uvm32_state_t vmst;
uvm32_evt_t evt;
bool isrunning = false;
uint32_t led_time = 0;
bool led_state = false;
void setup(void) {
Serial.begin(115200);
pinMode(LED_BUILTIN, OUTPUT);
isrunning = false;
}
void loop(void) {
// flash LED rapidly to show main loop is still running
if (millis() > led_time + 50) {
digitalWrite(LED_BUILTIN, led_state);
led_state = !led_state;
led_time = millis();
}
if (isrunning) {
uvm32_run(&vmst, &evt, 100); // num instructions before vm considered hung
switch(evt.typ) {
case UVM32_EVT_END:
isrunning = false;
break;
case UVM32_EVT_IOREQ: // vm has paused to handle IOREQ
switch((f_code_t)evt.data.ioreq.code) {
case F_PRINTD:
Serial.println(evt.data.ioreq.val.u32);
break;
case F_PRINTC:
Serial.print((char)evt.data.ioreq.val.u32);
break;
case F_PRINTLN:
for (int i=0;i<evt.data.ioreq.val.buf.len;i++) {
Serial.print((char)evt.data.ioreq.val.buf.ptr[i]);
}
Serial.println("");
break;
}
break;
case UVM32_EVT_ERR:
Serial.print("Error: ");
Serial.println(evt.data.err.errstr);
isrunning = false;
break;
case UVM32_EVT_YIELD:
break;
}
} else {
Serial.println("Starting VM");
// setup vm
uvm32_init(&vmst, env, sizeof(env) / sizeof(env[0]));
uvm32_load(&vmst, rom, sizeof(rom));
isrunning = true;
delay(2000);
}
return 0;
}