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Asm.js closer still.

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This commit is contained in:
Brad Nelson
2022-07-12 23:36:45 -07:00
parent 550050d9c3
commit 422507c072
2 changed files with 213 additions and 53 deletions
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258
web/web.template.js
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@ -28,6 +28,7 @@ const BUILTIN_MARK = 8;
{{boot}}
var heap = new ArrayBuffer(HEAP_SIZE);
var f32 = new Float32Array(heap);
var i32 = new Int32Array(heap);
var u16 = new Uint16Array(heap);
var u8 = new Uint8Array(heap);
@ -58,23 +59,6 @@ function Load(addr, content) {
return addr;
}
function UPPER(a) {
// a = 97, z = 122
return a >= 97 && a <= 122 ? a & 95 : a;
}
function Same(a, b) {
if (a.length != b.length) {
return false;
}
for (var i = 0; i < a.length; ++i) {
if (UPPER(a.charCodeAt(i)) != UPPER(b.charCodeAt(i))) {
return false;
}
}
return true;
}
function GetString(a, n) {
var ret = '';
for (var i = 0; i < n; ++i) {
@ -85,14 +69,17 @@ function GetString(a, n) {
function CELL_ALIGNED(n) { return (n + 3) & ~3; }
function UPPER(ch) {
return ch >= 'a'.charCodeAt(0) && ch <= 'z'.charCodeAt(0) ? (ch & 0x5F) : ch;
}
function TOFLAGS(xt) { return xt - 4; }
function TOFLAGS(xt) { return xt - 1 * 4; }
function TONAMELEN(xt) { return xt + 1; }
function TOPARAMS(xt) { return TOFLAGS(xt) + 2; }
function TOSIZE(xt) { return CELL_ALIGNED(u8[TONAMELEN(xt)>>2]) + 4 * i32[TOPARAMS(xt)>>2]; }
function TOLINK(xt) { return xt - 2; }
function TOLINK(xt) { return xt - 2 * 4; }
function TONAME(xt) {
return (i32[TOFLAGS(xt)] & BUILTIN_MARK)
return (i32[TOFLAGS(xt)>>2] & BUILTIN_MARK)
? u8[TOLINK(xt)] : TOLINK(xt) - CELL_ALIGNED(u8[TONAMELEN(xt)]);
}
function TOBODY(xt) {
@ -109,7 +96,7 @@ function BUILTIN_FLAGS(i) {
return u8[BUILTIN_ITEM(i) + 1 * 4 + 0];
}
function BUILTIN_NAMELEN(i) {
return i32[BUILTIN_ITEM(i) + 1 * 4 + 1];
return u8[BUILTIN_ITEM(i) + 1 * 4 + 1];
}
function BUILTIN_VOCAB(i) {
return u16[(BUILTIN_ITEM(i) + 1 * 4 + 2)>>1];
@ -127,14 +114,14 @@ function Find(name) {
for (var i = 0; BUILTIN_NAME(i); ++i) {
if (BUILTIN_VOCAB(i) === vocab &&
name.length === BUILTIN_NAMELEN(i) &&
name === GetString(BUILTIN_NAME(i), name.length)) {
name.toUpperCase() === GetString(BUILTIN_NAME(i), name.length).toUpperCase()) {
return BUILTIN_CODE(i);
}
}
}
if (!(u8[TOFLAGS(xt)] & SMUDGE) &&
name.length === u8[TONAMELEN(xt)] &&
name === GetString(TONAME(xt), name.length)) {
name.toUpperCase() === GetString(TONAME(xt), name.length).toUpperCase()) {
return xt;
}
xt = i32[TOLINK(xt)>>2];
@ -154,7 +141,20 @@ function CCOMMA(value) {
}
function Finish() {
// TODO
if (i32[g_sys_latestxt>>2] && !i32[TOPARAMS(i32[g_sys_latestxt>>2])>>2]) {
var sz = i32[g_sys_heap>>2] - (g_sys_latestxt + 4);
if (sz < 0 || sz > 0xffff) { sz = 0xffff; }
i32[TOPARAMS(i32[g_sys_latestxt>>2])>>2] = sz;
}
}
function UNSMUDGE() {
u8[TOFLAGS(i32[i32[g_sys_current>>2]>>2])] &= ~SMUDGE;
Finish();
}
function DOIMMEDIATE() {
u8[TOFLAGS(i32[i32[g_sys_current>>2]>>2])] |= IMMEDIATE;
}
function Create(name, flags, op) {
@ -192,6 +192,138 @@ function SetupBuiltins() {
COMMA(0);
}
function Match(sep, ch) {
return sep == ch || (sep == 32 && (ch == 9 || ch == 10 || ch == 13));
}
function Parse(sep, ret) {
if (sep == 32) {
while (i32[g_sys_tin>>2] < i32[g_sys_ntib>>2] &&
Match(sep, u8[i32[g_sys_tib>>2] + i32[g_sys_tin>>2]])) { ++i32[g_sys_tin>>2]; }
}
i32[ret>>2] = i32[g_sys_tib>>2] + i32[g_sys_tin>>2];
while (i32[g_sys_tin>>2] < i32[g_sys_ntib>>2] &&
!Match(sep, u8[i32[g_sys_tib>>2] + i32[g_sys_tin>>2]])) { ++i32[g_sys_tin>>2]; }
var len = i32[g_sys_tin>>2] - (i32[ret>>2] - i32[g_sys_tib>>2]);
console.log('PARSE: ' + GetString(i32[ret>>2], len));
return len;
}
function Convert(pos, n, base, ret) {
i32[ret>>2] = 0;
var negate = 0;
if (!n) { return 0; }
if (u8[pos] == '-'.charCodeAt(0)) { negate = -1; ++pos; --n; }
if (u8[pos] == '$'.charCodeAt(0)) { base = 16; ++pos; --n; }
for (; n; --n) {
var d = UPPER(u8[pos]) - 48;
if (d > 9) {
d -= 7;
if (d < 10) { return 0; }
}
if (d >= base) { return 0; }
i32[ret>>2] = i32[ret>>2] * base + d;
++pos;
}
if (negate) { i32[ret>>2] = -i32[ret>>2]; }
return -1;
}
function FConvert(pos, n, ret) {
f32[ret>>2] = 0;
var negate = 0;
var has_dot = 0;
var exp = 0;
var shift = 1;
if (!n) { return 0; }
if (u8[pos] == '-'.charCodeAt(0)) { negate = -1; ++pos; --n; }
for (; n; --n) {
if (u8[pos] >= 48 && u8[pos] <= 48 + 9) {
if (has_dot) {
shift = shift * 0.1;
f32[ret>>2] = f32[ret>>2] + (u8[pos] - 48) * shift;
} else {
f32[ret>>2] = f32[ret>>2] * 10 + (u8[pos] - 48);
}
} else if (u8[pos] == 'e'.charCodeAt(0) || u8[pos] == 'E'.charCodeAt(0)) {
break;
} else if (u8[os] == '.'.charCodeAt(0)) {
if (has_dot) { return 0; }
has_dot = -1;
} else {
return 0;
}
++pos;
}
if (!n) { return 0; } // must have E
++pos; --n;
if (n) {
var tmp = f32[ret>>2];
if (!Convert(pos, n, 10, ret)) { return 0; }
exp = i32[ret>>2];
f32[ret>>2] = tmp;
}
if (exp < -128 || exp > 128) { return 0; }
for (; exp < 0; ++exp) { f32[ret>>2] *= 0.1; }
for (; exp > 0; --exp) { f32[ret>>2] *= 10.0; }
if (negate) { f32[ret>>2] = -f32[ret>>2]; }
return -1;
}
function Evaluate1(rp) {
var call = 0;
var tos, sp, ip, fp;
// UNPARK
ip = i32[rp>>2]; rp -= 4; fp = i32[rp>>2]; rp -= 4; sp = i32[rp>>2]; rp -= 4; tos = i32[sp>>2]; sp -= 4;
var name = sp + 8;
var len = Parse(32, name);
if (len == 0) { // ignore empty
sp += 4; i32[sp>>2] = tos; tos = 0;
// PARK
sp += 4; i32[sp>>2] = tos; rp += 4; i32[rp>>2] = sp; rp += 4; i32[rp>>2] = fp; rp += 4; i32[rp>>2] = ip;
return rp;
}
var xt = Find(GetString(i32[name>>2], len));
if (xt) {
if (i32[g_sys_state>>2] && !(u8[TOFLAGS(xt)] & IMMEDIATE)) {
COMMA(xt);
} else {
call = xt;
}
} else {
var n = sp + 16;
if (Convert(i32[name>>2], len, i32[g_sys_base>>2], n)) {
if (i32[g_sys_state>>2]) {
COMMA(i32[g_sys_DOLIT_XT>>2]);
COMMA(i32[n>>2]);
} else {
sp += 4; i32[sp>>2] = tos; tos = i32[n>>2];
}
} else {
if (FConvert(i32[name>>2], len, n)) {
if (i32[g_sys_state>>2]) {
COMMA(i32[g_sys_DOFLIT_XT>>2]);
f32[i32[g_sys_heap>>2]>>2] = f32[n>>2]; i32[g_sys_heap>>2] += 4;
} else {
fp += 4; f32[fp>>2] = f32[n>>2];
}
} else {
console.log('CANT FIND: ' + GetString(i32[name>>2], len));
sp += 4; i32[sp>>2] = i32[name>>2];
sp += 4; i32[sp>>2] = len;
sp += 4; i32[sp>>2] = -1;
call = i32[g_sys_notfound>>2];
}
}
}
sp += 4; i32[sp>>2] = call;
// PARK
sp += 4; i32[sp>>2] = tos; rp += 4; i32[rp>>2] = sp; rp += 4; i32[rp>>2] = fp; rp += 4; i32[rp>>2] = ip;
return rp;
}
function InitDictionary() {
{{dict}}
SetupBuiltins();
@ -222,9 +354,9 @@ function Init() {
for (var i = 0; i < VOCABULARY_DEPTH; ++i) { COMMA(0); }
// setup boot text.
var source = g_sys_heap;
var source = i32[g_sys_heap>>2];
i32[g_sys_heap>>2] = Load(i32[g_sys_heap>>2], boot);
var source_len = g_sys_heap - source;
var source_len = i32[g_sys_heap>>2] - source;
i32[g_sys_boot>>2] = source;
i32[g_sys_boot_size>>2] = source_len;
@ -247,6 +379,7 @@ function Init() {
i32[g_sys_base>>2] = 10;
i32[g_sys_tib>>2] = source;
i32[g_sys_ntib>>2] = source_len;
i32[g_sys_ntib>>2] = source_len;
rp += 4; i32[rp>>2] = fp;
rp += 4; i32[rp>>2] = sp;
@ -282,8 +415,6 @@ function VM(stdlib, foreign, heap) {
var create = foreign.create;
var find = foreign.find;
var parse = foreign.parse;
var memset = foreign.memset;
var memmove = foreign.memmove;
var convert = foreign.convert;
var fconvert = foreign.fconvert;
var evaluate1 = foreign.evaluate1;
@ -296,6 +427,40 @@ function VM(stdlib, foreign, heap) {
{{sys}}
function memset(dst, ch, n) {
dst = dst | 0;
ch = ch | 0;
n = n | 0;
while (n | 0) {
u8[dst] = ch;
dst = (dst + 1) | 0;
n = (n - 1) | 0;
}
}
function memmove(src, dst, n) {
src = src | 0;
dst = dst | 0;
n = n | 0;
if ((src | 0) < (dst | 0)) {
src = (src + n - 1) | 0;
dst = (dst + n - 1) | 0;
while (n | 0) {
u8[dst] = u8[src];
src = (src - 1) | 0;
dst = (dst - 1) | 0;
n = (n - 1) | 0;
}
} else {
while (n | 0) {
u8[dst] = u8[src];
src = (src + 1) | 0;
dst = (dst + 1) | 0;
n = (n - 1) | 0;
}
}
}
function run() {
var tos = 0;
var ip = 0;
@ -314,11 +479,11 @@ function VM(stdlib, foreign, heap) {
tos = i32[sp>>2]|0; sp = (sp - 4)|0;
for (;;) {
w = i32[ip>>2]|0;
emitlog(ip|0);
//emitlog(ip|0);
ip = (ip + 4)|0;
decode: for (;;) {
ir = u8[w]|0;
emitlog(ir|0);
//emitlog(ir|0);
switch (ir&0xff) {
{{cases}}
default:
@ -332,27 +497,22 @@ function VM(stdlib, foreign, heap) {
}
var ffi = {
Call: Call,
create: function() { console.log('create'); },
parse: function() { console.log('parse'); },
COMMA: function(n) { COMMA(n); },
CCOMMA: function(n) { COMMA(n); },
SSMOD: function() { console.log('ssmod'); },
DOES: function() { console.log('does'); },
DOIMMEDIATE: function() { console.log('immediate'); },
UNSMUDGE: function() { console.log('unsmudge'); },
parse: function() { console.log('parse'); },
find: function() { console.log('find'); },
memmove: function() { console.log('memmove'); },
memset: function() { console.log('memset'); },
convert: function() { console.log('convert'); },
fconvert: function() { console.log('fconvert'); },
evaluate1: function() { console.log('evaluate1'); },
log: function(n) { console.log(n); }
'Call': Call,
'create': function(name, len, flags, op) { Create(GetString(name, len), flags, op); },
'parse': function(sep, ret) { return Parse(sep, ret); },
'find': function(a, n) { return Find(GetString(a, n)); },
'convert': function(pos, n, base, ret) { return Convert(pos, n, base, ret); },
'fconvert': function(pos, n, ret) { return FConvert(pos, n, ret); },
'evaluate1': function(rp) { return Evaluate1(rp); },
'log': function(n) { console.log(n); },
'COMMA': function(n) { COMMA(n); },
'CCOMMA': function(n) { COMMA(n); },
'SSMOD': function() { console.log('ssmod'); },
'DOES': function() { console.log('does'); },
'DOIMMEDIATE': function() { DOIMMEDIATE(); },
'UNSMUDGE': function() { UNSMUDGE(); },
};
heap[128 + 6] = 256 * 4; // set g_sys.heap = 256 * 4;
function getGlobalObj() {
return (function(g) {
return g;