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Stephen Heumann afe3e9586b Fix bad code generation in some cases where compound assignment operators are used to update a value through a pointer.
This could occur because a temporary location might be used both in the l-value and r-value computations, but the final assignment code assumed it still had the value from the l-value computation.

The following function demonstrates this problem (*ip is not updated, and *p is trashed):

int badinc(char **p, int *ip)
{
    *ip += *(*p)++;
}
2017-10-21 20:36:21 -05:00
obj ORCA/C 2.1.0 source from the Opus ][ CD 2017-10-01 17:47:47 -06:00
ORCACDefs Move ORCACDefs directory to root level. 2017-10-21 20:21:37 -05:00
Tests Update test to account for enlarged string space. 2017-10-21 20:36:21 -05:00
Asm.pas Move some code from the blank segment to named load segments. 2017-10-21 20:36:21 -05:00
backup Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
cc.notes Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
CC.pas Move some code from the blank segment to named load segments. 2017-10-21 20:36:21 -05:00
CC.rez Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
CC.rez2 Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
CCommon.asm Move some code from the blank segment to named load segments. 2017-10-21 20:36:21 -05:00
CCommon.macros Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
CCommon.pas Move some code from the blank segment to named load segments. 2017-10-21 20:36:21 -05:00
CGC.asm Increase the limit on the number of intermediate code labels in a function from 2400 to 3200. 2017-10-21 20:36:21 -05:00
CGC.macros Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
CGC.pas Expand the size of the object buffer from 64K to 128K, and use 32-bit values to track related sizes. 2017-10-21 20:36:21 -05:00
CGI.Comments Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
CGI.Debug Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
CGI.pas Increase the total size of string constants permitted in each function. 2017-10-21 20:36:21 -05:00
count Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
DAG2.pas Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
DAG.pas Fix bug causing incorrect code generation in programs that use the 'volatile' keyword. 2017-10-21 20:36:21 -05:00
Exp.macros Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Expression.asm Move some code from the blank segment to named load segments. 2017-10-21 20:36:21 -05:00
Expression.pas Fix bad code generation in some cases where compound assignment operators are used to update a value through a pointer. 2017-10-21 20:36:21 -05:00
Gen.pas Fix bug causing functions with 254 bytes of locals and parameters to crash on return. 2017-10-21 20:36:21 -05:00
Header2.pas Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Header.pas Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
LICENSE ORCA/C 2.1.0 source from the Opus ][ CD 2017-10-01 17:47:47 -06:00
linkit Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
linkit2 Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
make Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
make2 Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
MM.asm Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
MM.macros Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
MM.pas Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Native2.pas Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Native.asm Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Native.macros Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Native.pas Don't block the LDA elimination optimization if a native code label is encountered. 2017-10-21 20:36:21 -05:00
ObjOut2.asm Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
ObjOut2.pas Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
ObjOut.asm Expand the size of the object buffer from 64K to 128K, and use 32-bit values to track related sizes. 2017-10-21 20:36:21 -05:00
ObjOut.macros Expand the size of the object buffer from 64K to 128K, and use 32-bit values to track related sizes. 2017-10-21 20:36:21 -05:00
ObjOut.pas Expand the size of the object buffer from 64K to 128K, and use 32-bit values to track related sizes. 2017-10-21 20:36:21 -05:00
Parser.pas If 'volatile' is used within a function, only reduce optimization for that function. 2017-10-21 20:36:21 -05:00
README.md Add instructions for converting line endings. 2017-10-21 20:09:08 -05:00
Scanner.asm If the day of the month is in the range 1-9, report it in __DATE__ with a leading space character rather than a leading 0. 2017-10-21 20:36:21 -05:00
Scanner.debug Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Scanner.macros Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Scanner.pas Allow skipped code to contain pp-numbers that are not valid numeric constants. 2017-10-21 20:36:21 -05:00
smake Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Symbol.asm Move some code from the blank segment to named load segments. 2017-10-21 20:36:21 -05:00
Symbol.macros Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Symbol.pas Properly generate const-qualified structs and unions. 2017-10-21 20:36:21 -05:00
Symbol.Print Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Table.asm Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Table.macros Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00
Table.pas Change all text/source files to LF line endings. 2017-10-21 18:40:19 -05:00

ORCA-C

Apple IIGS ORCA/C Compiler, an ANSI C compiler for the 65816 with libraries for the Apple IIGS

If you would like to make changes to this compiler and distribute them to others, feel free to submit them here. If the changes apply to compilation on and for an Apple IIGS, they will generally be approved for distribution on the master branch unless the changes deviate significantly from the ANSI C standard. For changes that deviate form ANSI C or changes that retarget the compiler to run on a different platform or generate code for a different platform, the project will either be forked or a new repository will be created, as appropriate.

The general conditions that must be met before a change is released on master are:

  1. The modified compiler must compile under the currently released version of ORCA/M and ORCA/Pascal.

  2. All samples from the original ORCA/C distribution must compile and execute under the modified compiler, or the sample must be updated, too.

  3. The compiler must pass the ORCA/C tset suite, or the test suite must be suitably modified, too.

  4. The compiler must work with the current ORCA/C libraries, or the libraries must be modified, too.

Contact support@byteworks.us if you need contributor access.

A complete distribution of the ORCA languages, including installers and documentation, is available from the Juiced GS store at https://juiced.gs/store/category/software/. It is distributed as part of the Opus ][ package.

Line Endings

The text and source files in this repository originally used CR line endings, as usual for Apple II text files, but they have been converted to use LF line endings because that is the format expected by Git. If you wish to move them to a real or emulated Apple II and build them there, you will need to convert them back to CR line endings.

If you wish, you can configure Git to perform line ending conversions as files are checked in and out of the Git repository. With this configuration, the files in your local working copy will contain CR line endings suitable for use on an Apple II. To set this up, perform the following steps in your local copy of the Git repository (these should be done when your working copy has no uncommitted changes):

  1. Add the following lines at the end of the .git/config file:
[filter "crtext"]
	clean = LC_CTYPE=C tr \\\\r \\\\n
	smudge = LC_CTYPE=C tr \\\\n \\\\r
  1. Add the following lines to the .git/info/attributes file, creating it if necessary:
* filter=crtext
bin/Libraries/* -filter
bin/Languages/* -filter
  1. Run the following commands to convert the existing files in your working copy:
rm .git/index
git checkout HEAD -- .

Alternatively, you can keep the LF line endings in your working copy of the Git repository, but convert them when you copy the files to an Apple II. There are various tools to do this. One option is udl, which is available both as a IIGS shell utility and as C code that can be built and used on modern systems.