void deletePcodePair(int delIndex1, int delIndex2)
{
TRACE(stderr, "[deletePcodePair]");
PUTOP(pptr[delIndex1], oNOP);
PUTARG(pptr[delIndex1], 0);
PUTOP(pptr[delIndex2], oNOP);
PUTARG(pptr[delIndex2], 0);
setupPointer();
}
void deletePcode(int delIndex)
{
TRACE(stderr, "[deletePcode]");
PUTOP(pptr[delIndex], oNOP);
PUTARG(pptr[delIndex], 0);
setupPointer();
}
void border(WINDOW *win, int be_fat)
{
int both = win->borderwid;
int out = (be_fat == BORDER_FAT) ? both - 1 : win->outborderwid;
int inr = both - out;
int clr = PUTOP(BIT_CLR, W(style));
int set = PUTOP(BIT_SET, W(style));
BITMAP *bdr = (W(flags) & W_ACTIVE) ? W(border) : W(save);
int w = BIT_WIDE(bdr);
int h = BIT_HIGH(bdr);
if (both <= 0)
return;
ONE_BOX(bdr, 0, 0, w, h, out, set);
ONE_BOX(bdr, out, out, w - out - out, h - out - out, inr, clr);
}
int unaryOptimize(void)
{
register uint32_t temp;
register int i;
int nchanges = 0;
TRACE(stderr, "[unaryOptimize]");
/* At least two pcodes are need to perform unary optimizations */
i = 0;
while (i < nops-1)
{
/* Check for a constant value being pushed onto the stack */
if (GETOP(pptr[i]) == oPUSH)
{
switch (GETOP(pptr[i+1]))
{
/* Delete unary operators on constants */
case oNEG :
PUTARG(pptr[i], -GETARG(pptr[i]));
deletePcode(i+1);
nchanges++;
break;
case oABS :
if ((int32_t)GETARG(pptr[i]) < 0)
PUTARG(pptr[i], -(int32_t)GETARG(pptr[i]));
deletePcode(i+1);
nchanges++;
break;
case oINC :
PUTARG(pptr[i], GETARG(pptr[i]) + 1);
deletePcode(i+1);
nchanges++;
break;
case oDEC :
PUTARG(pptr[i], GETARG(pptr[i]) - 1);
deletePcode(i+1);
nchanges++;
break;
case oNOT :
PUTARG(pptr[i], ~GETARG(pptr[i]));
PUTARG(pptr[i], ~(GETARG(pptr[i])));
deletePcode(i+1);
nchanges++;
break;
/* Simplify binary operations on constants */
case oADD :
if (GETARG(pptr[i]) == 0)
{
deletePcodePair(i, (i+1));
nchanges++;
} /* end if */
else if (GETARG(pptr[i]) == 1)
{
PUTOP(pptr[i+1], oINC);
deletePcode(i);
nchanges++;
} /* end else if */
else if (GETARG(pptr[i]) == ARGONES)
{
PUTOP(pptr[i+1], oDEC);
deletePcode(i);
nchanges++;
} /* end else if */
else i++;
break;
case oSUB :
if (GETARG(pptr[i]) == 0)
{
deletePcodePair(i, (i+1));
nchanges++;
} /* end if */
else if (GETARG(pptr[i]) == 1)
{
PUTOP(pptr[i+1], oDEC);
deletePcode(i);
nchanges++;
} /* end else if */
else if (GETARG(pptr[i]) == ARGONES)
{
PUTOP(pptr[i+1], oINC);
deletePcode(i);
nchanges++;
} /* end else if */
else i++;
break;
case oMUL :
case oDIV :
temp = 0;
switch (GETARG(pptr[i]))
{
case 1 :
deletePcodePair(i, (i+1));
nchanges++;
break;
case 16384 : temp++;
case 8192 : temp++;
case 4096 : temp++;
case 2048 : temp++;
case 1024 : temp++;
case 512 : temp++;
case 256 : temp++;
case 128 : temp++;
case 64 : temp++;
case 32 : temp++;
case 16 : temp++;
case 8 : temp++;
case 4 : temp++;
case 2 : temp++;
PUTARG(pptr[i], temp);
if (GETOP(pptr[i+1]) == oMUL)
PUTOP(pptr[i+1], oSLL);
else
PUTOP(pptr[i+1], oSRA);
nchanges++;
i++;
break;
default :
i++;
break;
} /* end switch */
break;
case oSLL :
case oSRL :
case oSRA :
case oOR :
if (GETARG(pptr[i]) == 0)
{
deletePcodePair(i, (i+1));
nchanges++;
} /* end if */
else i++;
break;
case oAND :
if (GETARG(pptr[i]) == ARGONES)
{
deletePcodePair(i, (i+1));
nchanges++;
} /* end if */
else i++;
break;
/* Delete comparisons of constants to zero */
case oEQUZ :
if (GETARG(pptr[i]) == 0)
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcode(i+1);
nchanges++;
break;
case oNEQZ :
if (GETARG(pptr[i]) != 0)
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcode(i+1);
nchanges++;
break;
case oLTZ :
if ((int32_t)GETARG(pptr[i]) < 0)
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcode(i+1);
nchanges++;
break;
case oGTEZ :
if ((int32_t)GETARG(pptr[i]) >= 0)
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcode(i+1);
nchanges++;
break;
case oGTZ :
if (GETARG(pptr[i]) > 0)
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcode(i+1);
nchanges++;
break;
case oLTEZ :
if (GETARG(pptr[i]) <= 0)
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcode(i+1);
nchanges++;
break;
/* Simplify comparisons with certain constants */
case oEQU :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+1],oEQUZ);
deletePcode(i);
nchanges++;
} /* end if */
else if (GETARG(pptr[i]) == 1)
{
PUTOP(pptr[i], oDEC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oEQUZ);
nchanges++;
} /* end else if */
else if ((int32_t)GETARG(pptr[i]) == -1)
{
PUTOP(pptr[i], oINC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oEQUZ);
nchanges++;
} /* end else if */
else i++;
break;
case oNEQ :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+1], oNEQZ);
deletePcode(i);
nchanges++;
} /* end if */
else if (GETARG(pptr[i]) == 1)
{
PUTOP(pptr[i], oDEC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oNEQZ);
nchanges++;
} /* end else if */
else if ((int32_t)GETARG(pptr[i]) == -1)
{
PUTOP(pptr[i], oINC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oNEQZ);
nchanges++;
} /* end else if */
else i++;
break;
case oLT :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+1], oLTZ);
deletePcode(i);
nchanges++;
} /* end if */
else if (GETARG(pptr[i]) == 1)
{
PUTOP(pptr[i], oDEC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oLTZ);
nchanges++;
} /* end else if */
else if ((int32_t)GETARG(pptr[i]) == -1)
{
PUTOP(pptr[i], oINC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oLTZ);
nchanges++;
} /* end else if */
else i++;
break;
case oGTE :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+1], oGTEZ);
deletePcode(i);
nchanges++;
} /* end if */
else if (GETARG(pptr[i]) == 1)
{
PUTOP(pptr[i], oDEC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oGTEZ);
nchanges++;
} /* end else if */
else if ((int32_t)GETARG(pptr[i]) == -1)
{
PUTOP(pptr[i], oINC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oGTEZ);
nchanges++;
} /* end else if */
else i++;
break;
case oGT :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+1], oGTZ);
deletePcode(i);
nchanges++;
} /* end if */
else if (GETARG(pptr[i]) == 1)
{
PUTOP(pptr[i], oDEC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oGTZ);
nchanges++;
} /* end else if */
else if ((int32_t)GETARG(pptr[i]) == -1)
{
PUTOP(pptr[i], oINC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oGTZ);
nchanges++;
} /* end else if */
else i++;
break;
case oLTE :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+1], oLTEZ);
deletePcode(i);
nchanges++;
} /* end if */
else if (GETARG(pptr[i]) == 1)
{
PUTOP(pptr[i], oDEC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oLTEZ);
nchanges++;
} /* end else if */
else if ((int32_t)GETARG(pptr[i]) == -1)
{
PUTOP(pptr[i], oINC);
PUTARG(pptr[i], 0);
PUTOP(pptr[i+1], oLTEZ);
nchanges++;
} /* end else if */
else i++;
break;
/* Simplify or delete condition branches on constants */
case oJEQUZ :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+1], oJMP);
deletePcode(i);
} /* end if */
else
deletePcodePair(i, (i+1));
nchanges++;
break;
case oJNEQZ :
if (GETARG(pptr[i]) != 0)
{
PUTOP(pptr[i+1], oJMP);
deletePcode(i);
} /* end if */
else
deletePcodePair(i, (i+1));
nchanges++;
break;
case oJLTZ :
if ((int32_t)GETARG(pptr[i]) < 0)
{
PUTOP(pptr[i+1], oJMP);
deletePcode(i);
} /* end if */
else
deletePcodePair(i, (i+1));
nchanges++;
break;
case oJGTEZ :
if ((int32_t)GETARG(pptr[i]) >= 0)
{
PUTOP(pptr[i+1], oJMP);
deletePcode(i);
} /* end if */
else
deletePcodePair(i, (i+1));
nchanges++;
break;
case oJGTZ :
if (GETARG(pptr[i]) > 0)
{
PUTOP(pptr[i+1], oJMP);
deletePcode(i);
} /* end if */
else
deletePcodePair(i, (i+1));
nchanges++;
break;
case oJLTEZ :
if (GETARG(pptr[i]) <= 0)
{
PUTOP(pptr[i+1], oJMP);
deletePcode(i);
} /* end if */
else
deletePcodePair(i, (i+1));
nchanges++;
break;
default :
i++;
break;
} /* end switch */
} /* end if */
/* Delete multiple modifications of DSEG pointer */
else if (GETOP(pptr[i]) == oINDS)
{
if (GETOP(pptr[i+1]) == oINDS)
{
PUTARG(pptr[i], GETARG(pptr[i] + GETARG(pptr[i+1])));
deletePcode(i+1);
} /* end if */
else i++;
} /* end else if */
else i++;
} /* end while */
return (nchanges);
} /* end unaryOptimize */
int binaryOptimize(void)
{
register int i;
int nchanges = 0;
TRACE(stderr, "[binaryOptimize]");
/* At least two pcodes are needed to perform the following binary */
/* operator optimizations */
i = 0;
while (i < nops-2)
{
if (GETOP(pptr[i]) == oPUSH)
{
if (GETOP(pptr[i+1]) == oPUSH)
{
switch (GETOP(pptr[i+2]))
{
case oADD :
PUTARG(pptr[i], GETARG(pptr[i]) + GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oSUB :
PUTARG(pptr[i], GETARG(pptr[i]) - GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oMUL :
PUTARG(pptr[i], GETARG(pptr[i]) * GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oDIV :
PUTARG(pptr[i], GETARG(pptr[i]) / (int32_t)GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oMOD :
PUTARG(pptr[i], GETARG(pptr[i]) % GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oSLL :
PUTARG(pptr[i], GETARG(pptr[i]) << GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oSRL :
PUTARG(pptr[i], GETARG(pptr[i]) >> GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oSRA :
PUTARG(pptr[i], (int32_t)GETARG(pptr[i]) >> GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oOR :
PUTARG(pptr[i], GETARG(pptr[i]) | GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oAND :
PUTARG(pptr[i], GETARG(pptr[i]) & GETARG(pptr[i+1]));
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oEQU :
if (GETARG(pptr[i]) == GETARG(pptr[i+1]))
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oNEQ :
if (GETARG(pptr[i]) != GETARG(pptr[i+1]))
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oLT :
if ((int32_t)GETARG(pptr[i]) < (int32_t)GETARG(pptr[i+1]))
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oGTE :
if ((int32_t)GETARG(pptr[i]) >= (int32_t)GETARG(pptr[i+1]))
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oGT :
if ((int32_t)GETARG(pptr[i]) > (int32_t)GETARG(pptr[i+1]))
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcodePair((i+1), (i+2));
nchanges++;
break;
case oLTE :
if ((int32_t)GETARG(pptr[i]) <= (int32_t)GETARG(pptr[i+1]))
PUTARG(pptr[i], -1);
else
PUTARG(pptr[i], 0);
deletePcodePair((i+1), (i+2));
nchanges++;
break;
default :
i++;
break;
} /* end switch */
} /* end if */
/* A single (constant) pcode is sufficient to perform the */
/* following binary operator optimizations */
else if ((GETOP(pptr[i+1]) == oLDSH) || (GETOP(pptr[i+1]) == oLDSB) ||
(GETOP(pptr[i+1]) == oLAS) || (GETOP(pptr[i+1]) == oLAC))
{
switch (GETOP(pptr[i+2]))
{
case oADD :
if (GETARG(pptr[i]) == 0)
{
deletePcodePair(i, (i+2));
nchanges++;
} /* end if */
else if (GETARG(pptr[i]) == 1)
{
PUTOP(pptr[i+2], oINC);
deletePcode(i);
nchanges++;
} /* end else if */
else if (GETARG(pptr[i]) == ARGONES)
{
PUTOP(pptr[i+2], oDEC);
deletePcode(i);
nchanges++;
} /* end else if */
else i++;
break;
case oSUB :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i], oNEG);
deletePcode(i);
nchanges++;
} /* end if */
else i++;
break;
case oMUL :
{
int32_t stmp32 = 0;
switch (GETARG(pptr[i]))
{
case 1 :
deletePcodePair(i, (i+2));
nchanges++;
break;
case 16384 : stmp32++;
case 8192 : stmp32++;
case 4096 : stmp32++;
case 2048 : stmp32++;
case 1024 : stmp32++;
case 512 : stmp32++;
case 256 : stmp32++;
case 128 : stmp32++;
case 64 : stmp32++;
case 32 : stmp32++;
case 16 : stmp32++;
case 8 : stmp32++;
case 4 : stmp32++;
case 2 : stmp32++;
PUTOP(pptr[i], GETOP(pptr[i+1]));
PUTARG(pptr[i], GETARG(pptr[i+1]));
PUTOP(pptr[i+1], oPUSH);
PUTARG(pptr[i+1], stmp32);
PUTOP(pptr[i+2], oSLL);
nchanges++;
i++;
break;
default :
i++;
break;
}
}
break;
case oOR :
if (GETARG(pptr[i]) == 0)
{
deletePcodePair(i, (i+2));
nchanges++;
} /* end if */
else i++;
break;
case oAND :
if (GETARG(pptr[i]) == ARGONES)
{
deletePcodePair(i, (i+2));
nchanges++;
} /* end if */
else i++;
break;
case oEQU :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+2], oEQUZ);
deletePcode(i);
nchanges++;
} /* end if */
else i++;
break;
case oNEQ :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+2], oNEQZ);
deletePcode(i);
nchanges++;
} /* end if */
else i++;
break;
case oLT :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+2], oGTEZ);
deletePcode(i);
nchanges++;
} /* end if */
else i++;
break;
case oGTE :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+2], oLTZ);
deletePcode(i);
nchanges++;
} /* end if */
else i++;
break;
case oGT :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+2], oLTEZ);
deletePcode(i);
nchanges++;
} /* end if */
else i++;
break;
case oLTE :
if (GETARG(pptr[i]) == 0)
{
PUTOP(pptr[i+2], oGTZ);
deletePcode(i);
nchanges++;
} /* end if */
else i++;
break;
default :
i++;
break;
} /* end switch */
} /* end else if */
else i++;
} /* end if */
/* Misc improvements on binary operators */
else if (GETOP(pptr[i]) == oNEG)
/*{{{ shape -- reshape a window to specified dimensions*/
int shape(int x, int y, int dx, int dy)
{
int sx, sy, w, h;
WINDOW *win;
if (dx > 0) {
sx = x;
w = dx;
} else {
sx = x + dx;
w = -dx;
}
if (dy > 0) {
sy = y;
h = dy;
} else {
sy = y + dy;
h = -dy;
}
if (sx < 0)
sx = 0;
if (sx + w >= BIT_WIDE(screen))
w = BIT_WIDE(screen) - sx;
if (sy + h >= BIT_HIGH(screen))
h = BIT_HIGH(screen) - sy;
if (w < 2 * ACTIVE(borderwid) + ACTIVE(font)->head.wide * MIN_X || h < 2 * ACTIVE(borderwid) + ACTIVE(font)->head.high * MIN_Y)
return (-1);
#ifdef MGR_ALIGN
alignwin(screen, &sx, &w, ACTIVE(borderwid));
#endif
/* remove current window position */
save_win(active);
erase_win(ACTIVE(border));
clip_bad(active); /* invalidate clip lists */
/* redraw remaining windows */
repair(active);
/* adjust window state */
ACTIVE(x0) = sx;
ACTIVE(y0) = sy;
bit_destroy(ACTIVE(window));
bit_destroy(ACTIVE(border));
ACTIVE(border) = bit_create(screen, sx, sy, w, h);
ACTIVE(window) = bit_create(ACTIVE(border),
ACTIVE(borderwid),
ACTIVE(borderwid),
w - ACTIVE(borderwid) * 2,
h - ACTIVE(borderwid) * 2);
for (win = ACTIVE(next); win != (WINDOW *)0; win = W(next)) {
if (W(flags) & W_ACTIVE && intersect(active, win))
save_win(win);
}
CLEAR(ACTIVE(window), PUTOP(BIT_CLR, ACTIVE(style)));
border(active, BORDER_THIN);
bit_blit(ACTIVE(border), 0, 0,
BIT_WIDE(ACTIVE(save)) - ACTIVE(borderwid),
BIT_HIGH(ACTIVE(save)) - ACTIVE(borderwid),
BIT_SRC, ACTIVE(save), 0, 0);
/* make sure character cursor is in a good spot */
if (ACTIVE(x) > BIT_WIDE(ACTIVE(window))) {
ACTIVE(x) = 0;
ACTIVE(y) += ((int)(ACTIVE(font)->head.high));
}
if (ACTIVE(y) > BIT_HIGH(ACTIVE(window))) {
#ifdef WIERD
ACTIVE(y) = BIT_HIGH(ACTIVE(window));
scroll(ACTIVE(window), 0, BIT_HIGH(ACTIVE(window)),
((int)(ACTIVE(font)->head.high)), SWAPCOLOR(ACTIVE(style)));
bit_blit(ACTIVE(window), 0, BIT_HIGH(ACTIVE(window)) - ((int)(ACTIVE(font)->head.high)),
BIT_WIDE(ACTIVE(save)), ((int)(ACTIVE(font)->head.high)),
BIT_SRC, ACTIVE(save),
ACTIVE(borderwid), BIT_HIGH(ACTIVE(save)) - ((int)(ACTIVE(font)->head.high)) - ACTIVE(borderwid));
#else
ACTIVE(y) = BIT_HIGH(ACTIVE(window)) - ((int)(ACTIVE(font)->head.high));
#endif
}
bit_destroy(ACTIVE(save));
ACTIVE(save) = (BITMAP *)0;
/* invalidate clip lists */
clip_bad(active);
un_covered();
set_size(active);
return (0);
}
