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Fix printvideo regression and minor improvements

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This commit is contained in:
Justine Tunney 2020-08-26 09:41:07 -07:00
parent eb4bb43275
commit e86cff8ba0
25 changed files with 240 additions and 207 deletions
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12
tool/build/lib/string.c
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@ -78,7 +78,7 @@ void OpString(struct Machine *m, int op) {
lg2 = RegLog2(m->xedd);
n = 1 << lg2;
for (;;) {
if (m->xedd->op.rep && !Read64(m->cx)) break;
if (Rep(m->xedd) && !Read64(m->cx)) break;
v = 0;
*p = NULL;
compare = false;
@ -125,11 +125,11 @@ void OpString(struct Machine *m, int op) {
abort();
}
EndStore(m, v, n, p, s[0]);
if (!m->xedd->op.rep) break;
if (!Rep(m->xedd)) break;
Write64(m->cx, Read64(m->cx) - 1);
if (compare) {
if (m->xedd->op.rep == 2 && GetFlag(m->flags, FLAGS_ZF)) break;
if (m->xedd->op.rep == 3 && !GetFlag(m->flags, FLAGS_ZF)) break;
if (Rep(m->xedd) == 2 && GetFlag(m->flags, FLAGS_ZF)) break;
if (Rep(m->xedd) == 3 && !GetFlag(m->flags, FLAGS_ZF)) break;
}
}
}
@ -211,7 +211,7 @@ void OpRepStosbEnhanced(struct Machine *m) {
}
void OpMovsb(struct Machine *m) {
if (m->xedd->op.rep && !GetFlag(m->flags, FLAGS_DF)) {
if (Rep(m->xedd) && !GetFlag(m->flags, FLAGS_DF)) {
OpRepMovsbEnhanced(m);
} else {
OpString(m, STRING_MOVS);
@ -219,7 +219,7 @@ void OpMovsb(struct Machine *m) {
}
void OpStosb(struct Machine *m) {
if (m->xedd->op.rep && !GetFlag(m->flags, FLAGS_DF)) {
if (Rep(m->xedd) && !GetFlag(m->flags, FLAGS_DF)) {
OpRepStosbEnhanced(m);
} else {
OpString(m, STRING_STOS);