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{
x86 format converters for HERMES
Some routines Copyright (c) 1998 Christian Nentwich (c.nentwich@cs.ucl.ac.uk)
Most routines are (c) Glenn Fiedler (ptc@gaffer.org), used with permission
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version
with the following modification:
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent modules,and
to copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the terms
and conditions of the license of that module. An independent module is a
module which is not derived from or based on this library. If you modify
this library, you may extend this exception to your version of the library,
but you are not obligated to do so. If you do not wish to do so, delete this
exception statement from your version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
}
label
_MMXRETURN;
{ _ConvertMMX:
[ESP+8] ConverterInfo*
--------------------------------------------------------------------------
ConverterInfo (ebp+..)
0: void *s_pixels
4: int s_width
8: int s_height
12: int s_add
16: void *d_pixels
20: int d_width
24: int d_height
28: int d_add
32: void (*converter_function)()
36: int32 *lookup
}
procedure ConvertMMX(hci: PHermesConverterInterface); cdecl; assembler;
label
y_loop, endconvert;
asm
movl 8(%ebp),%eax
cmpl $0,4(%eax)
je endconvert
pushl %ebp
movl %eax,%ebp
movl (%ebp),%esi
movl 16(%ebp),%edi
y_loop:
movl 4(%ebp),%ecx
jmp *32(%ebp)
_MMXRETURN:
addl 12(%ebp),%esi
addl 28(%ebp),%edi
decl 8(%ebp)
jnz y_loop
popl %ebp
endconvert:
emms
end;
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