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Commit Graph

176 Commits

Author SHA1 Message Date
IrgendwerA8
cc6559c3f6 Minor math optimizations 2019-02-28 19:48:29 +01:00
Oliver Schmidt
e86a7db18b Some minor cleanups. 2018-07-26 14:35:26 +02:00
IrgendwerA8
465a651090 Free 2 bytes again. 2018-05-29 01:51:24 +02:00
IrgendwerA8
8a5d1b9674 Reestablished entry state of signed operation and optimized that (again). 2018-05-25 23:52:42 +02:00
IrgendwerA8
ba5b580368 Fixed first letter of comments (should be upper case). 2018-05-25 16:10:16 +02:00
IrgendwerA8
71420223bc Changed the name of the file too. 2018-05-24 11:37:17 +02:00
IrgendwerA8
9c1cb0801c Changed naming absvaludiv -> absvaludiv16. 2018-05-24 11:31:43 +02:00
IrgendwerA8
dd411efd1c Adapted div & mod for popptr1. 2018-05-24 03:55:40 +02:00
IrgendwerA8
6175271651 Removed optimizations which break the compiler ones. 2018-05-22 19:10:07 +02:00
IrgendwerA8
808d3ab471 Fix for 8x16 multiplication if operants are swapped. 2018-05-22 18:35:05 +02:00
IrgendwerA8
d7da827be8 Apply faster popptr1 to functions and/or use register instead of stack to save accu. 2018-05-21 18:18:01 +02:00
IrgendwerA8
d4081b43a6 Fixed comments. 2018-05-21 14:41:12 +02:00
Irgendwer
32bbacbb78
Merge branch 'master' into popptr1 2018-05-21 13:33:14 +02:00
IrgendwerA8
911b86de67 Fixed formatting and two import issues. 2018-05-21 13:02:56 +02:00
IrgendwerA8
c95ed4b8b5 Added "popptr1" which is of common use to save some bytes. 2018-05-20 15:30:18 +02:00
Oliver Schmidt
be30c0bd70
Merge pull request #606 from pfusik/ldec
Optimize deceaxy
2018-03-10 11:28:46 +00:00
Piotr Fusik
18ada212e7 Fix coding style. 2018-03-09 18:48:24 +01:00
Piotr Fusik
970c5f6184 Add comments. 2018-03-08 22:10:11 +01:00
Piotr Fusik
5251b67d73 Fix comment typos. 2018-03-07 21:01:29 +01:00
Piotr Fusik
a32c50a6bc Optimize deceaxy. 2018-03-07 20:45:50 +01:00
Lauri Kasanen
a84463a3df callptr4 2017-05-01 21:08:03 +03:00
Oliver Schmidt
275b27647e Removed superfluous final linefeed. 2017-04-04 15:43:56 +02:00
Oliver Schmidt
233dd5062a Merge pull request #389 from IrgendwerA8/stringimprovements
Optimization of string functions (size & speed).
2017-04-04 15:39:37 +02:00
IrgendwerA8
1abfa98290 minor style changes 2017-03-19 20:51:54 +01:00
IrgendwerA8
0de44517ac few 6502 and some 65SC02 optimizations 2017-03-12 23:21:43 +01:00
IrgendwerA8
81115aa826 Added further optimizations and unit tests. 2017-03-05 02:09:12 +01:00
Oliver Schmidt
419eb700b5 Renamed INITBSS to INIT and INIT to ONCE.
The way we want to use the INITBSS segment - and especially the fact that it won't have the type bss on all ROM based targets - means that the name INITBSS is misleading. After all INIT is the best name from my perspective as it serves several purposes and therefore needs a rather generic name.

Unfortunately this means that the current INIT segment needs to be renamed too. Looking for a short (ideally 4 letter) name I came up with ONCE as it contains all code (and data) accessed only once during initialization.
2016-03-06 21:27:19 +01:00
Oliver Schmidt
0ee9b2e446 Changed run location of INIT segment.
So far the INIT segment was run from the later heap+stack. Now the INIT segment is run from the later BSS. The background is that so far the INIT segment was pretty small (from $80 to $180 bytes). But upcoming changes will increase the INIT segment in certain scenarios up to ~ $1000 bytes. So programs with very limited heap+stack might just not been able to move the INIT segment to its run location. But moving the INIT segment to the later BSS allows it to occupy the later BSS+heap+stack.

In order to allow that the constructors are _NOT_ allowed anymore to access the BSS. Rather they must use the DATA segment or the new INITBSS segment. The latter isn't cleared at any point so the constructors may use it to expose values to the main program. However they must make sure to always write the values as they are not pre-initialized.
2015-10-14 22:52:09 +02:00
Greg King
74c2415795 Changed literal zeroes of the style "#>0" into the style "#>$0000". 2014-09-10 19:15:07 -04:00
Greg King
f82a43b98d Fixed the comments to say where the actual Left-Hand Side and Right-Hand Side are put.
A description of positions [left, right] is appropriate more for C code than for Assembly code.  (A description of timing [first argument, second argument] is more appropriate for the way that Assembly code is written.)
2014-05-11 10:43:06 -04:00
Greg King
228b9d1718 Added a fast subroutine to multiply two signed 8-bit numbers. 2014-05-11 01:08:27 -04:00
Oliver Schmidt
5edcd639e0 Made EXTZP segment option for modules.
This allows to remove the "add empty EXTZP segement to avoid warnings"
approach.
2013-06-28 00:30:24 +02:00
Oliver Schmidt
85885001b1 Removed (pretty inconsistently used) tab chars from source code base. 2013-05-09 13:57:12 +02:00
Oliver Schmidt
008b4c4e1d Replaced whole bunch for Makefiles with a single generic Makefile.
- No complex shell logic.
- "Source file shadowing" for all targets via vpath.
- Dependency handling.
- True incremental build.
- Don't write into source directories.
- Easy cleanup by just removing 'wrk'.
2013-05-04 22:10:48 +02:00
ol.sc
7c9171ee87 Moved IRQ hooking / unhooking from startup code to constructor / destructor to avoid linking in the hooking / unhooking code (and callirq) for the majority of cc65 prorams not linking in interruptors.
git-svn-id: svn://svn.cc65.org/cc65/trunk@5985 b7a2c559-68d2-44c3-8de9-860c34a00d81
2013-02-12 22:39:38 +00:00
uz
dc4e898abd Use the new declarations from the zeropage include file. In interrupt handlers
that call C code, we don't need to save the register bank, because the C code
will save it, when needed.


git-svn-id: svn://svn.cc65.org/cc65/trunk@5909 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-11-04 15:23:05 +00:00
uz
7b34609930 Have the callirq module export __CALLIRQ__ and changed all config files so
this symbol is a forced import for all interruptors.


git-svn-id: svn://svn.cc65.org/cc65/trunk@5902 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-11-03 21:59:15 +00:00
uz
6cdd8e7281 Rewrite code for arithmetic right shift.
git-svn-id: svn://svn.cc65.org/cc65/trunk@5779 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-07-11 20:57:02 +00:00
uz
c6db670be5 Rewrite to add an entry point for shraxy that doesn't need to pass values over
the stack.


git-svn-id: svn://svn.cc65.org/cc65/trunk@5761 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-07-06 19:57:24 +00:00
uz
db8cac9501 Comment and tab fix. No code changes.
git-svn-id: svn://svn.cc65.org/cc65/trunk@5760 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-07-06 19:56:42 +00:00
uz
b9ffe5de13 Add another entry point to the shift left routine, that shifts A/X by Y
without going over the stack.


git-svn-id: svn://svn.cc65.org/cc65/trunk@5742 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-06-24 22:04:00 +00:00
uz
85b25b3d22 Added an entry point to push a 32 bit long value.
git-svn-id: svn://svn.cc65.org/cc65/trunk@5705 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-06-10 19:15:52 +00:00
uz
8087959e18 New entry point to push something pointed to by ptr1 with index in Y.
git-svn-id: svn://svn.cc65.org/cc65/trunk@5667 b7a2c559-68d2-44c3-8de9-860c34a00d81
2012-06-01 19:19:45 +00:00
uz
3806cd472d Added new 8x16 unsigned multiplication routine.
git-svn-id: svn://svn.cc65.org/cc65/trunk@5078 b7a2c559-68d2-44c3-8de9-860c34a00d81
2011-07-10 14:51:03 +00:00
uz
3812c5c854 Added labels for umul16x16r16 and umul16x16r16m.
git-svn-id: svn://svn.cc65.org/cc65/trunk@5077 b7a2c559-68d2-44c3-8de9-860c34a00d81
2011-07-10 14:50:18 +00:00
uz
4a32e84639 Fixed an error in the division routine: The high byte of the wrong 16 bit
value was checked before entering the faster 16b8 division routine.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4904 b7a2c559-68d2-44c3-8de9-860c34a00d81
2011-01-11 17:08:29 +00:00
uz
c72cf88723 Comment update.
git-svn-id: svn://svn.cc65.org/cc65/trunk@4582 b7a2c559-68d2-44c3-8de9-860c34a00d81
2010-02-04 22:29:57 +00:00
uz
c6831e936a Added --forget-inc-paths to the assembler command line to avoid problems if
more than one version of ca65 is installed on the machine (Spiro Trikaliotis).


git-svn-id: svn://svn.cc65.org/cc65/trunk@4530 b7a2c559-68d2-44c3-8de9-860c34a00d81
2009-12-18 11:58:50 +00:00
uz
5dc80c2615 Rename the 8x8 multiplication using the same scheme as for the 16x16
multiplication.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4463 b7a2c559-68d2-44c3-8de9-860c34a00d81
2009-11-12 15:48:11 +00:00
uz
18272c0427 Working on the division and multiplication routines.
git-svn-id: svn://svn.cc65.org/cc65/trunk@4443 b7a2c559-68d2-44c3-8de9-860c34a00d81
2009-11-04 19:41:54 +00:00