Hi!
6-Апр-2004 23:51 [EMAIL PROTECTED] (Bart Oldeman) wrote to
[EMAIL PROTECTED]:
> +++ inthndlr.c 6 Apr 2004 23:51:33 -0000 1.68
> case 0x11: /* normalise ASCIIZ filename */
In my patch applied (UBYTE) casting for character literals (like 'a').
For OpenWatcom this reduces code (by eliminationg extraneous promotions byte
arguments to int).
> case 0x13:
> + r.AX = (unsigned char)r.callerARG1;
> + if (r.AX >= 'a' && r.AX <= 'z')
> + r.AX -= 'a' - 'A';
1. Bug: RBIL says that returned AL, not AX.
2. This code in any case may be optimized by reducing comparisions to bytes:
if (r.AL >= (UBYTE)'a' && ...
3. My code looks so:
case 0x13: /* uppercase character */
{
/* for now, ASCII only because nls.c cannot handle DS!=SS */
unsigned char ch = r.callerARG1;
if (ch >= (UBYTE)'a' && ch <= (UBYTE)'z')
ch -= (UBYTE)('a' - 'A');
r.AL = ch;
break;
}
Don't remember about OW, but for BC this, at least, saves extra 3-byte JMP,
because there is extra operator between `if' and `break'. Also, BC doesn't
places intro registers structure fields, so my code also better in this
case.
> + put_string("unimplemented internal dos function INT2F/12");
> + put_unsigned(r.AL, 16, 2);
What wrong in (shorter code):
put_string("unimplemented internal dos function INT2F/");
put_unsigned(r.AX, 16, 4);
?
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