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use minimal shell

This commit is contained in:
zongor 2025-10-14 15:39:03 -07:00
parent 0c72525755
commit 9d30ffb69b
3 changed files with 143 additions and 90 deletions
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3
Makefile
View File

@ -58,7 +58,8 @@ ifeq ($(PLATFORM), emscripten)
LDFLAGS += -s USE_SDL=2\
-s ASYNCIFY \
-s ALLOW_MEMORY_GROWTH=1 \
--preload-file test/paint.rom@paint.rom
--preload-file test/paint.rom@paint.rom \
--shell-file $(ARCH_DIR)/shell_minimal.html
# For release: optimize, strip debug, minimize size
ifeq ($(BUILD_MODE), release)

89
src/arch/emscripten/main.c
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@ -31,94 +31,6 @@ static DeviceOps console_device_ops = {
static ScreenDeviceData screen_data = {0};
static MouseDeviceData mouse_data = {0};
const char *opcode_to_string(Opcode op) {
static const char *names[] = {[OP_HALT] = "halt",
[OP_JMP] = "jump",
[OP_JMPF] = "jump-if-flag",
[OP_CALL] = "call",
[OP_RETURN] = "return",
[OP_LOAD_IMM] = "load-immediate",
[OP_GET_8] = "get-8",
[OP_GET_16] = "get-16",
[OP_GET_32] = "get",
[OP_LOAD_8] = "load-8",
[OP_LOAD_16] = "load-16",
[OP_LOAD_32] = "load",
[OP_STORE_8] = "store-8",
[OP_STORE_16] = "store-16",
[OP_STORE_32] = "store",
[OP_PUT_8] = "put-8",
[OP_PUT_16] = "put-16",
[OP_PUT_32] = "put",
[OP_MALLOC] = "malloc",
[OP_MEMSET_8] = "memset-8",
[OP_MEMSET_16] = "memset-16",
[OP_MEMSET_32] = "memset-32",
[OP_PUSH] = "push",
[OP_POP] = "pop",
[OP_REG_MOV] = "register-move",
[OP_SYSCALL] = "syscall",
[OP_SLL] = "bit-shift-left",
[OP_SRL] = "bit-shift-right",
[OP_SRE] = "bit-shift-re",
[OP_BAND] = "bit-and",
[OP_BOR] = "bit-or",
[OP_BXOR] = "bit-xor",
[OP_ADD_INT] = "add-int",
[OP_SUB_INT] = "sub-int",
[OP_MUL_INT] = "mul-int",
[OP_DIV_INT] = "div-int",
[OP_ADD_UINT] = "add-nat",
[OP_SUB_UINT] = "sub-nat",
[OP_MUL_UINT] = "mul-nat",
[OP_DIV_UINT] = "div-nat",
[OP_ADD_REAL] = "add-real",
[OP_SUB_REAL] = "sub-real",
[OP_MUL_REAL] = "mul-real",
[OP_DIV_REAL] = "div-real",
[OP_INT_TO_REAL] = "int-to-real",
[OP_UINT_TO_REAL] = "nat-to-real",
[OP_REAL_TO_INT] = "real-to-int",
[OP_REAL_TO_UINT] = "real-to-nat",
[OP_JEQ_INT] = "jump-eq-int",
[OP_JNEQ_INT] = "jump-neq-int",
[OP_JGT_INT] = "jump-gt-int",
[OP_JLT_INT] = "jump-lt-int",
[OP_JLE_INT] = "jump-le-int",
[OP_JGE_INT] = "jump-ge-int",
[OP_JEQ_UINT] = "jump-eq-nat",
[OP_JNEQ_UINT] = "jump-neq-nat",
[OP_JGT_UINT] = "jump-gt-nat",
[OP_JLT_UINT] = "jump-lt-nat",
[OP_JLE_UINT] = "jump-le-nat",
[OP_JGE_UINT] = "jump-ge-nat",
[OP_JEQ_REAL] = "jump-eq-real",
[OP_JNEQ_REAL] = "jump-neq-real",
[OP_JGE_REAL] = "jump-ge-real",
[OP_JGT_REAL] = "jump-gt-real",
[OP_JLT_REAL] = "jump-lt-real",
[OP_JLE_REAL] = "jump-le-real",
[OP_STRLEN] = "string-length",
[OP_STREQ] = "string-eq",
[OP_STRCAT] = "string-concat",
[OP_STR_GET_CHAR] = "string-get-char",
[OP_STR_FIND_CHAR] = "string-find-char",
[OP_STR_SLICE] = "string-slice",
[OP_INT_TO_STRING] = "int-to-string",
[OP_UINT_TO_STRING] = "nat-to-string",
[OP_REAL_TO_STRING] = "real-to-string",
[OP_STRING_TO_INT] = "string-to-int",
[OP_STRING_TO_UINT] = "string-to-nat",
[OP_STRING_TO_REAL] = "string-to-real"};
if (op < 0 || op >= (int)(sizeof(names) / sizeof(names[0]))) {
return "<invalid-opcode>";
}
const char *name = names[op];
return name ? name : "<unknown-opcode>";
}
void mainloop() {
SDL_Event event;
SDL_PumpEvents();
@ -181,7 +93,6 @@ void mainloop() {
int cycles_this_frame = 0;
int max_cycles_per_frame = 1000; // Adjust this value
while (cycles_this_frame < max_cycles_per_frame) {
// printf("%s\n", opcode_to_string(vm.code[vm.pc])); // REMOVE THIS LINE
if (!step_vm(&vm)) {
emscripten_cancel_main_loop();
return;

141
src/arch/emscripten/shell_minimal.html Normal file
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@ -0,0 +1,141 @@
<!doctype html>
<html lang="en-us">
<head>
<meta charset="utf-8">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Emscripten-Generated Code</title>
<style>
.emscripten { padding-right: 0; margin-left: auto; margin-right: auto; display: block; }
textarea.emscripten { font-family: monospace; width: 80%; }
div.emscripten { text-align: center; }
div.emscripten_border { border: 1px solid black; }
/* the canvas *must not* have any border or padding, or mouse coords will be wrong */
canvas.emscripten { border: 0px none; background-color: black; }
.spinner {
height: 50px;
width: 50px;
margin: 0px auto;
-webkit-animation: rotation .8s linear infinite;
-moz-animation: rotation .8s linear infinite;
-o-animation: rotation .8s linear infinite;
animation: rotation 0.8s linear infinite;
border-left: 10px solid rgb(0,150,240);
border-right: 10px solid rgb(0,150,240);
border-bottom: 10px solid rgb(0,150,240);
border-top: 10px solid rgb(100,0,200);
border-radius: 100%;
background-color: rgb(200,100,250);
}
@-webkit-keyframes rotation {
from {-webkit-transform: rotate(0deg);}
to {-webkit-transform: rotate(360deg);}
}
@-moz-keyframes rotation {
from {-moz-transform: rotate(0deg);}
to {-moz-transform: rotate(360deg);}
}
@-o-keyframes rotation {
from {-o-transform: rotate(0deg);}
to {-o-transform: rotate(360deg);}
}
@keyframes rotation {
from {transform: rotate(0deg);}
to {transform: rotate(360deg);}
}
</style>
</head>
<body>
<hr/>
<figure style="overflow:visible;" id="spinner"><div class="spinner"></div><center style="margin-top:0.5em"><strong>emscripten</strong></center></figure>
<div class="emscripten" id="status">Downloading...</div>
<div class="emscripten">
<progress value="0" max="100" id="progress" hidden=1></progress>
</div>
<div class="emscripten_border">
<canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()" tabindex=-1></canvas>
</div>
<hr/>
<div class="emscripten">
<input type="checkbox" id="resize">Resize canvas
<input type="checkbox" id="pointerLock" checked>Lock/hide mouse pointer
&nbsp;&nbsp;&nbsp;
<input type="button" value="Fullscreen" onclick="Module.requestFullscreen(document.getElementById('pointerLock').checked,
document.getElementById('resize').checked)">
</div>
<hr/>
<textarea class="emscripten" id="output" rows="8"></textarea>
<hr>
<script type='text/javascript'>
var statusElement = document.getElementById('status');
var progressElement = document.getElementById('progress');
var spinnerElement = document.getElementById('spinner');
var canvasElement = document.getElementById('canvas');
var outputElement = document.getElementById('output');
if (outputElement) outputElement.value = ''; // clear browser cache
// As a default initial behavior, pop up an alert when webgl context is lost. To make your
// application robust, you may want to override this behavior before shipping!
// See http://www.khronos.org/registry/webgl/specs/latest/1.0/#5.15.2
canvasElement.addEventListener("webglcontextlost", (e) => {
alert('WebGL context lost. You will need to reload the page.');
e.preventDefault();
}, false);
var Module = {
print(...args) {
// These replacements are necessary if you render to raw HTML
//text = text.replace(/&/g, "&amp;");
//text = text.replace(/</g, "&lt;");
//text = text.replace(/>/g, "&gt;");
//text = text.replace('\n', '<br>', 'g');
console.log(...args);
if (outputElement) {
var text = args.join(' ');
outputElement.value += text + "\n";
outputElement.scrollTop = outputElement.scrollHeight; // focus on bottom
}
},
canvas: canvasElement,
setStatus(text) {
if (!Module.setStatus.last) Module.setStatus.last = { time: Date.now(), text: '' };
if (text === Module.setStatus.last.text) return;
var m = text.match(/([^(]+)\((\d+(\.\d+)?)\/(\d+)\)/);
var now = Date.now();
if (m && now - Module.setStatus.last.time < 30) return; // if this is a progress update, skip it if too soon
Module.setStatus.last.time = now;
Module.setStatus.last.text = text;
if (m) {
text = m[1];
progressElement.value = parseInt(m[2])*100;
progressElement.max = parseInt(m[4])*100;
progressElement.hidden = false;
spinnerElement.hidden = false;
} else {
progressElement.value = null;
progressElement.max = null;
progressElement.hidden = true;
if (!text) spinnerElement.hidden = true;
}
statusElement.innerHTML = text;
},
totalDependencies: 0,
monitorRunDependencies(left) {
this.totalDependencies = Math.max(this.totalDependencies, left);
Module.setStatus(left ? 'Preparing... (' + (this.totalDependencies-left) + '/' + this.totalDependencies + ')' : 'All downloads complete.');
}
};
Module.setStatus('Downloading...');
window.onerror = () => {
Module.setStatus('Exception thrown, see JavaScript console');
spinnerElement.style.display = 'none';
Module.setStatus = (text) => {
if (text) console.error('[post-exception status] ' + text);
};
};
</script>
{{{ SCRIPT }}}
</body>
</html>