empathicqubit/cc65
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Added a forgotten header file.

Browse source 
git-svn-id: svn://svn.cc65.org/cc65/trunk@5711 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz 2012-06-11 07:06:24 +00:00
parent 8dc74f33da
commit cb9ef2f96a
1 changed files with 198 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

198
src/cc65/coptptrstore.h Normal file
View file

@ -0,0 +1,198 @@
/*****************************************************************************/
/* */
/* coptptrstore.h */
/* */
/* Optimize stores through pointers */
/* */
/* */
/* */
/* (C) 2012, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef COPTPTRSTORE_H
#define COPTPTRSTORE_H
/* cc65 */
#include "codeseg.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
unsigned OptPtrStore1 (CodeSeg* S);
/* Search for the sequence:
*
* lda #<(label+0)
* ldx #>(label+0)
* clc
* adc xxx
* bcc L
* inx
* L: jsr pushax
* ldx #$00
* lda yyy
* ldy #$00
* jsr staspidx
*
* and replace it by:
*
* ldy xxx
* ldx #$00
* lda yyy
* sta label,y
*/
unsigned OptPtrStore2 (CodeSeg* S);
/* Search for the sequence:
*
* lda #<(label+0)
* ldx #>(label+0)
* ldy aaa
* clc
* adc (sp),y
* bcc L
* inx
* L: jsr pushax
* ldx #$00
* lda yyy
* ldy #$00
* jsr staspidx
*
* and replace it by:
*
* ldy aaa
* ldx #$00
* lda (sp),y
* tay
* lda yyy
* sta label,y
*/
unsigned OptPtrStore3 (CodeSeg* S);
/* Search for the sequence:
*
* lda #<(label+0)
* ldx #>(label+0)
* ldy aaa
* clc
* adc (sp),y
* bcc L
* inx
* L: jsr pushax
* ldy #bbb
* ldx #$00
* lda (sp),y
* ldy #$00
* jsr staspidx
*
* and replace it by:
*
* ldy aaa
* lda (sp),y
* tax
* ldy #bbb-2
* lda (sp),y
* sta label,x
* ldx #$00
*/
unsigned OptPtrStore4 (CodeSeg* S);
/* Search for the sequence:
*
* ldy #offs1
* clc
* adc (sp),y
* bcc L
* inx
* L: jsr pushax
* ldy #offs2
* ldx #$00
* lda (sp),y
* ldy #$00
* jsr staspidx
*
* and replace it by:
*
* sta ptr1
* stx ptr1+1
* ldx #$00
* ldy #offs2-2
* lda (sp),y
* ldy #offs1
* sta (ptr1),y
*/
unsigned OptPtrStore5 (CodeSeg* S);
/* Search for the sequence:
*
* jsr pushax
* ldy xxx
* jsr ldauidx
* subop
* ldy yyy
* jsr staspidx
*
* and replace it by:
*
* sta ptr1
* stx ptr1+1
* ldy xxx
* ldx #$00
* lda (ptr1),y
* subop
* ldy yyy
* sta (ptr1),y
*
* In case a/x is loaded from the register bank before the pushax, we can even
* use the register bank instead of ptr1.
*
*
* jsr pushax
* ldy xxx
* jsr ldauidx
* ldx #$00
* lda (zp),y
* subop
* ldy yyy
* sta (zp),y
* jsr staspidx
*/
/* End of coptptrstore.h */
#endif