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147 Commits

Author SHA1 Message Date
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
uz
c200e0ec94 Added division routine. Removed C callable entry points from mul routines, 
they're now in common.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4441 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-11-04 18:23:40 +00:00
uz
7c804513fa The upper 16 bit differ between signed and unsigned multiplication, so while 
for 16x16=16, the unsigned routine can be used, regardless of signedness, this
is not true for 16x16=32.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4438 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-11-04 13:45:27 +00:00
uz
100c470727 Added C callable entry point for the 16x16=32 multiplication. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4435 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-11-03 17:43:57 +00:00
uz
0c1703f8fd Added 16*16=32 multiplication routine. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4434 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-11-03 13:40:03 +00:00
uz
fdc7604d8f Added separate 8x8=>16 multiplication routine as start of the multiplication 
and division stuff cleanup.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4431 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-11-02 22:28:02 +00:00
uz
54a8a778eb Remove 65C02 code, because in this case, the value of Y on return is always 
zero, which can be used by the optimizer.
                                         


git-svn-id: svn://svn.cc65.org/cc65/trunk@4384 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-10-20 08:25:58 +00:00
uz
6019580fb6 Removed unused code. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4191 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-09-18 17:42:44 +00:00
uz
1ea503a036 The pleasp.s module is no longer in use. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4094 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-31 12:56:54 +00:00
uz
db69c202a4 Oh well. Decided to throw away the separate implementation for leaa0sp, 
because it's not used too much, may sometimes inlined and can easily be
replaced by another entry in leaaxsp.s


git-svn-id: svn://svn.cc65.org/cc65/trunk@4092 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-31 12:22:13 +00:00
uz
bf9d36a2fa Renamed leaasp.s again, this time to leaa0sp.s. Added a new module leaaxsp.s. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4091 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-31 12:15:51 +00:00
uz
a1dd468291 Renamed leasp.s to leaasp.s 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4090 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-31 12:10:59 +00:00
uz
c4763e9007 Special cased the division 16 by 8. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4043 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-19 14:51:16 +00:00
uz
acd1233bf2 Greatly improved multiplication routine. Optimized the generic 16x16 one and 
added special cases for 8x16 and 8x8. The former is directly called by the
compiler as tosmula0 and tosumula0 resp.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4036 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-17 20:48:28 +00:00
uz
bfc8bd6d74 Added an entry point that clears the high word of rhs. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4027 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-16 16:38:52 +00:00
uz
aa7d419165 More entry points for long ops that clear the high word of the lhs. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4025 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-15 21:06:06 +00:00
uz
b1f772e9be Added additional entry points that clear the high word of the right operand. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4023 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-15 20:58:35 +00:00
uz
6a26b6e3b4 Added tosicmp0, a special entry point that clears the X register. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@4005 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-08-14 22:08:28 +00:00
uz
3c168b4323 A few minor 65C02 optimizations. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3944 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2009-02-22 15:39:19 +00:00
uz
4812feb44b git-svn-id: svn://svn.cc65.org/cc65/trunk@3863 b7a2c559-68d2-44c3-8de9-860c34a00d81 2008-08-02 22:02:54 +00:00
cuz
a47008cca0 Fixed a bug: Byte three of the remainder was overwritten by byte 4. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3796 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2007-08-26 17:25:21 +00:00
cuz
d3ac084997 Add the ltest module to the makefile 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3675 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-11-28 14:55:45 +00:00
cuz
eeddbed25b File was removed but is still needed. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3671 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-11-27 22:03:19 +00:00
cuz
5cf71b0dea Removed obsolete modules 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3582 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-08-13 21:21:31 +00:00
cuz
82751788fd Fixed a bug: Divisions with a divisor > 0xFFFFFF did not work because the 
high byte of the divisor was overwritten instead of the high byte of the
result.


git-svn-id: svn://svn.cc65.org/cc65/trunk@3525 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-07-05 21:01:34 +00:00
cuz
3c4cd1fff9 Call interrupt handlers with carry clear 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3499 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-05-05 10:07:17 +00:00
cuz
cbdcab4fdb Change the sematics of callirq and the existing interruptors: The interrupts 
must now return carry set if the interrupt has been handled, and carry clear
if not. The callirq routine will stop calling handlers with the first handler
that claims to have handled the interrupt. callirq will return the carry flag
to the caller as it came from the last interruptor called.


git-svn-id: svn://svn.cc65.org/cc65/trunk@3491 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-04-25 20:10:10 +00:00
cuz
6ec87c5dd9 Move initialization code into the init segment 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3404 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2005-02-26 09:06:46 +00:00
cuz
303304fe90 Add definitions for tools so the makefile is useful by itself. 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3262 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2004-10-26 19:28:26 +00:00
cuz
cfef8e1e0d Renamed __IRQFUNC_xxx -> __INTERRUPTOR_xxx 
git-svn-id: svn://svn.cc65.org/cc65/trunk@3189 b7a2c559-68d2-44c3-8de9-860c34a00d81
 2004-09-20 10:24:59 +00:00