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171 commits

Author SHA1 Message Date
Bill Currie
7071a46936 Make convert_value create a new value. 
It operating in-place proved to be troublesome.
 2012-12-05 22:16:08 +09:00
Bill Currie
2904c619c1 Don't bother creating an alias for a def of the same type. 2012-12-05 19:43:27 +09:00
Bill Currie
6074a6648f Do some sanity checking on storage class and defspace type. 
Params and locals in virtual spaces, static vars in backed. Otherwise,
whatever (for now). Now func-static.r aborts :)
 2012-12-04 14:18:17 +09:00
Bill Currie
98a0afa38f Add and use FREE() to complement ALLOC(). 
Now it will be easy to test memory access with valgrind (just compile with
DEBUG_QFCC_MEMORY defined).
 2012-12-04 13:23:31 +09:00
Bill Currie
0872961269 Do a little bit of cleanup. 2012-12-04 12:48:52 +09:00
Bill Currie
7412a45c65 Attach alias defs to their base def. 
With this, alias defs become singletons based on the def they alias and the
type and offset of the alias. Thus, the removal of the free_def call in
emit.c.
 2012-12-03 12:40:00 +09:00
Bill Currie
919ea8192a Make alias_def take an offset. 
alias_def now always creates an offset def (though the usual case has an
offset of 0). The if the alias escapes the bounds of the base def, an
internal error will be generated.
 2012-12-03 11:50:26 +09:00
Bill Currie
9d0332ae30 Make alaising a def to a larger type an internal error. 
It really doesn't seem wise to allow the compiler to do so as it would
overwrite unrelated defs. The only time such a thing is valid is the return
statement (silly vm design), and that's read-only.
 2012-12-03 11:38:55 +09:00
Bill Currie
9ca5a9e86c Make aliasing an alias def an internal error. 
I haven't seen the bug message show up, so it seems safe, and is probably a
good idea with what I have in mind.
 2012-12-03 11:36:14 +09:00
Bill Currie
5725c5124c Rename the storage_class_t enum values. 
With the intoduction of the statement type enum came a prefix clash. As
"st" makes sense for "statement type", I decided that "storage class"
should be "sc". Although there haven't been any problems as of yet, I
decided it would be a good idea to clean up the clash now. It also helps
avoid confusion (I was a bit surprised after working with st_assign etc to
be reminded of st_extern etc).
 2012-12-02 10:11:30 +09:00
Bill Currie
dbbca47a3b Mark initialized struct/array defs as initalized. 
Also, use the initialized flag for setting up the initalized var set in
flow_uninitialized().
 2012-11-24 15:26:27 +09:00
Bill Currie
d8a5d6745f Add a param flag to defs. 
It is necessary to know if a def is a function parameter so it can be
treated as initialized by the flow analyzer. The support for the flag in
object files is, at this stage, purely for debugging purposes.
 2012-11-20 17:50:59 +09:00
Bill Currie
158e261a8f Give reusable temps their own linked list. 
The next field is used for linking all defs in a space. Oops.
 2012-11-19 10:33:03 +09:00
Bill Currie
1af4d5eeed Ensure reused temps have the correct type. 
The type of a temp may change through its life as it's really the location
and name that are reused.
 2012-11-19 10:31:22 +09:00
Bill Currie
0c3aeb30aa Reuse tempary variables. 
Now that I've got nice code, it was worth doing. Unfortunatly, bsearch
style switch statements have problems.
switch.r:14: BUG: temp users went negative: <tmp 0x21b6840:-1>
switch.r:14: BUG: temp users went negative: <tmp 0x21b6840:-2>
switch.r:14: BUG: temp users went negative: <tmp 0x21b6840:-3>
switch.r:14: BUG: temp users went negative: <tmp 0x21b67d0:-1>
 2012-11-18 19:10:18 +09:00
Bill Currie
ffa08a99c2 Store the initializer expression in the def. 
Initially, this will be used for collecting the targets of a jumpb
instruction.
 2012-11-15 13:44:07 +09:00
Bill Currie
28ce35f1c1 Make values independent objects. 
values are now uniquely allocated (for the current object file). With
this, constants in dags will work.
 2012-11-15 13:44:06 +09:00
Bill Currie
93b007b1f8 Take care of relocs when defining external defs. 
For most of the cases, some relocs may have been lost, but they were
certainly lost for type encodings. Now that all seems to be fixed.
 2012-11-12 16:14:09 +09:00
Bill Currie
cc24e2e67e Initialize global string vars correctly. 
Ouch, I'd fixed that for arrays, but not normal vars.
 2012-11-09 12:23:04 +09:00
Bill Currie
9095e1eabc Rework build_switch to use initialize_def. 
This required support for label reference expressions, whose purpose is to
represent the address of a label.
 2012-11-09 12:22:34 +09:00
Bill Currie
ec98e3e206 Mark alias def chains as a bug. 2012-05-03 13:27:30 +09:00
Bill Currie
bc1b483525 Nuke the rcsid stuff. 
It's pretty useless in git.
 2012-04-22 10:56:32 +09:00
Bill Currie
2de7733b6a Fix initialized variable type handling. 
Same problem as initialized constants :P
 2011-03-30 21:21:38 +09:00
Bill Currie
8e18c76bde Make initialized variables defs rather than immediate constants. 2011-03-30 19:58:09 +09:00
Bill Currie
7dbd2ec172 Allow field aliasing. 
Initializing a field variable to another field will set the new field to
point to the same location. No type checking is done.

eg:
.SEL thinkMethod = think;
 2011-03-30 09:33:47 +09:00
Bill Currie
8d3508cf20 Allocate space for temp defs using size rather than type. 
Statement operands throw away the high level type information, so store
type size in the operand and use this size for allocating space for temps
rather than using the low-level type.
 2011-03-23 21:32:14 +09:00
Bill Currie
d4be914019 Fix initialized vector variables. 
The whole initialized variable system is wonky, but it will do for now.
 2011-03-22 15:10:06 +09:00
Bill Currie
7dbd5f656c Fix traditional vector component access. 2011-03-22 13:05:42 +09:00
Bill Currie
f1d9570dc8 Fix constant value type handling. 
Rename immediate.[ch] to value.[ch] and clean up the mess.

Add convert_value() to convert the type of a value (only scalar types).
 2011-03-22 12:24:39 +09:00
Bill Currie
0c0f4360da Make field defs "nosave". 
The engine treats fielddefs with DEF_SAVEGLOBAL set as bogus.
 2011-03-21 17:06:45 +09:00
Bill Currie
2464a89d37 Preserve relocs across def churning. 
Freeing then re-allocating a def to change its storage from external is
really not the right way to do it, but for now this fixes the loss of the
relocs. With this, the menus seem to work :)
 2011-03-09 10:52:29 +09:00
Bill Currie
7c770b75c5 Do not creat field defs for local storage. 
This prevents field params and local vars from messing up the real field
defs.
 2011-03-08 19:56:02 +09:00
Bill Currie
7649549de6 Handle external field declarations. 2011-03-07 17:23:52 +09:00
Bill Currie
49e446b637 Make field defs global. 
It turns out that field defs need to be global after all, so use separate
field def tables in the linker.
 2011-03-07 14:45:50 +09:00
Bill Currie
29cac0fe3a Optionally create *_[xyz] symbols for accessing vector components. 
"vector-components" in code options controls this feature. The default is
off for advanced code and on for traditional code. Disabling
vector-components prevents the comonent names polluting the namespace and
reduces the number of globals needed for vector fields if the components
of that field are never used.
 2011-03-07 10:21:40 +09:00
Bill Currie
8712d30d1a Make entity field defs static. 
Entity field defs need to be static in order to avoid clashing with their
field variables.
 2011-03-06 15:41:15 +09:00
Bill Currie
fe3d228658 Maintain a symbol table for entity fields. 2011-03-06 15:38:19 +09:00
Bill Currie
7209c61912 Fix initializing local float variables with an integer constant. 
Run the assignment expression through fold_constants to handle any
necessary conversions and error checking.
 2011-03-05 17:23:58 +09:00
Bill Currie
cfefd79e07 Fix the source of bogus string relocs. 
Nested aggregate initializers were corrupting themselves.
 2011-03-05 09:21:12 +09:00
Bill Currie
c06dd776d2 Fix expression initializers for arrays and structs. 2011-03-02 22:28:17 +09:00
Bill Currie
c10a551c84 Rename new_defspace() and defspace_new_loc(). 2011-02-24 13:07:36 +09:00
Bill Currie
e68e6d0858 Create defs for entity fields in the entity space. 2011-02-22 15:43:15 +09:00
Bill Currie
7d1f2c4ef3 Fix field def allocation for non-function fields. 2011-02-22 10:43:35 +09:00
Bill Currie
b7c6c4af5d Better variable naming in init_elements(). 2011-02-22 09:22:04 +09:00
Bill Currie
0f0ed3dae2 Allow null types in defs again. 
However, only at the lowest level. This is needed for my type encoding.
 2011-02-18 09:04:33 +09:00
Bill Currie
4e86b28b59 Use the def type rather than expression type to select the init method. 
Local defs may be initialized with non-constant expressions, which
includes function calls. Both function calls and aggregate initializers
use block expressions.
 2011-02-15 09:38:44 +09:00
Bill Currie
19f6faf0ad Fix aggregate initializers. 
Initializing arrays and structs seems to be working.
 2011-02-15 09:30:37 +09:00
Bill Currie
f1fccb19dd Allow same-type re-declarations of uninitialized variables. 
This is especially important for declaring variables that were previously
declared external.
 2011-02-14 23:10:46 +09:00
Bill Currie
23b01be214 Handle invalid initializers gracefully. 2011-02-14 23:10:46 +09:00
Bill Currie
4c63a0bad6 Generate a warning when creating a var with no type. 
This makes the internal error in new_def() non-functional, but the warning
will catch the bug and there's no harm in leaving the test in new_def().
 2011-02-14 23:10:46 +09:00
Bill Currie
3e5989463f Update the def_tail when removing the last def from the space. 2011-02-14 23:10:45 +09:00
Bill Currie
c336aaeb80 Handle incomplete types gracefully. 2011-02-13 19:26:20 +09:00
Bill Currie
8c01497936 Give __obj_exec_class a sterner beating. 
When linking a def into a defspace, ensure it can be removed. This fixes
the missing __obj_exec_class def in qwaq.
 2011-02-11 22:29:57 +09:00
Bill Currie
0efc759f2d Catch attempts to create a def with a null type. 2011-02-11 22:29:57 +09:00
Bill Currie
c3a991e555 Support nil in initializers. 2011-02-10 14:51:52 +09:00
Bill Currie
01a7af17e5 Beat __obj_exec_class into submission. 2011-02-10 00:15:19 +09:00
Bill Currie
afc6605739 Don't set the space for external defs. 2011-01-29 09:55:14 +09:00
Bill Currie
f45919df09 Need alias defs after all. 2011-01-25 15:42:26 +09:00
Bill Currie
726f293d0d Allocate space for defs and handle basic initializations. 
Block initializers (arrays and structs) are still broken.
 2011-01-25 12:16:13 +09:00
Bill Currie
0624408317 Move the diagnostic functions into their own file. 2011-01-24 21:54:57 +09:00
Bill Currie
afc5b2827d Simplify def handling, use far data. 
Since there is now a proper symbol table, defs are now just references to
memory locations and the symbol table takes care of duplicates.

Also, start using far data for ObjQC structures.

The qfo functions have been stubbed out until I figure out what to do with
object files in the new scheme.
 2011-01-24 15:41:43 +09:00
Bill Currie
4a24393d8d Temp expressions now use operands instead of defs. 2011-01-21 11:26:43 +09:00
Bill Currie
ea3895805b Rewrite much to use symbols and symtabs. Gut emit.c. Massive breakage. 
That which isn't rewritten is horribly broken. However, this does include a
nice mechanism for building QC structs for emitting data.

emit.c has been gutted in the spirit of "throw one away".

There is much work to be done to get even variables emitted, let alone
code. Things should be a little more fun from here on.
 2011-01-17 22:34:41 +09:00
Bill Currie
85de101aa3 Break out the defspace code. 
This also makes some improvements to the free block handling code.
 2011-01-17 22:34:41 +09:00
Bill Currie
75ec6bf244 Clean out some unnecessary types from the progs engine and clean up the mess. 
This is a nasty commit, sorry, but 99% of the commit is interdependent.
 2011-01-10 12:25:31 +09:00
Bill Currie
fac98536f0 make sure def->space points to the space the def's location is allocated from to ensure that freeing the location works properly (fixes the bogus address triggered by prozaccoop: thanks, phrosty) 2010-02-22 13:11:41 +00:00
Bill Currie
d558444b77 make temp def problems a little easier to understand 
o  set return_address whenever a temp def is requested, no only when it is
    actually created.
 o  make the notices about temp reference counting problems a little more
    readable and include the name of the temp
 2010-01-13 06:24:29 +00:00
Bill Currie
680bc22697 better error reporting for redefines 2007-05-13 09:02:51 +00:00
Bill Currie
52d178b3be Add a code generation option, "local-merging", to control qfcc's merging of local variable blocks into one block. Defaults to on for advanced mode and off for traditional. 2007-04-10 13:00:21 +00:00
Bill Currie
0382b05780 various unsigned long -> uintptr_t conversions 2007-04-04 11:22:48 +00:00
Bill Currie
3fb03fc2be hah, should have been using __attribute__((used)) all that time (rather 
than __attribute__((unused))). fixes the missing console in -x11
 2005-08-04 15:27:09 +00:00
Bill Currie
116860bb66 don't segfault when running out of globals 2005-06-10 05:16:20 +00:00
Bill Currie
66257e3a88 run in fear, function overloading is here 
This is an imperfect revision of history.
 2004-11-13 11:50:00 +00:00
Bill Currie
50dc955652 fix a couple out-by-one errors highlighted by quaternions 2004-04-09 02:20:47 +00:00
Bill Currie
0360859a0f all warnings (except for @self and self) are now fully controllable 2004-02-17 00:39:21 +00:00
Bill Currie
bf592412f8 give temp defs a name, making it easier to read disassembly output (.tmpN) 2004-02-06 08:58:19 +00:00
Bill Currie
385a90e8fb correct pr_symtab_t to include the pointer to the array of selectors used 
in the module. Unfortunatly, this requires a version bump on both qfo and
progs files due to the changes structure layout.
 2003-08-23 06:15:19 +00:00
Bill Currie
6ecb707257 revamp the struct system so "struct foo;" does the right thing (ala C) 2003-07-30 04:11:45 +00:00
Bill Currie
378c477b8e setup vector fields properly 2003-07-23 18:40:09 +00:00
Bill Currie
778cd78c35 fix some namespace issues with names both being a field and an ivar 2003-07-23 18:28:31 +00:00
Bill Currie
b6b5089ccc add a "nosave" flag to defs making it easier to make defs that don't get 
saved automaticly
 2003-04-25 17:00:22 +00:00
Bill Currie
2f6fc5d80c general revamp so params and the return value use proper defs rather than 
hardcoded locations. this will allow use of quaternions in the future.
 2003-04-22 15:29:32 +00:00
Bill Currie
eb099ae0d3 make qf gcc 3.3 clean 2003-04-17 00:01:48 +00:00
Bill Currie
5a58c58e7a don't initialize external defs. this broke source line/file tracking for 
@extern defs in headers.
 2003-02-24 19:13:56 +00:00
Bill Currie
761a7546dd re-arrange things so __attribute__ and __builtin_expect are properly 
autoconfiscated so rcsid will continue to work with gcc 3.3
 2003-01-15 15:31:36 +00:00
Bill Currie
567b905590 copyright block work 2002-10-22 14:53:18 +00:00
Bill Currie
22d3cf9664 rename the def_void and dev_function defs 2002-10-09 19:17:45 +00:00
Bill Currie
a20bb946f6 type.[ch]: 
provide a vector structure def so vector.[xyz] can be implemented
def.c:
	record the return address in get_temp to aid debugging
 2002-10-08 22:35:37 +00:00
Bill Currie
f992090b18 don't do extra manipulations for unnamed defs 2002-10-08 18:03:23 +00:00
Bill Currie
412db7e27d "for example" is more appropriate than "that is" 2002-09-16 15:42:11 +00:00
Bill Currie
090e65bc09 mark allocated fields constant 2002-09-12 18:34:17 +00:00
Bill Currie
f6cdbdf63c make sure an initialized def has the correct source file and line info 2002-09-07 06:45:51 +00:00
Bill Currie
c927b2e834 quakefs.c: 
allow . and .. in a path so long as the result doesn't escape from the
	game directory
cl_menu/Makefile.am:
	don't strip source paths
optoins.qc:
	use InputLine object
def.c:
	use notice to show stray temps
emit.c:
	make sure expression args get emitted for function calls
expr.c:
	'C' is a cast
	rewrite cast_expr to handle casted pointere derefs
 2002-08-20 06:11:10 +00:00
Bill Currie
cab813c559 check the scope when checking for duplicate vector sub-defs 2002-08-16 16:51:00 +00:00
Bill Currie
0840678465 handle extern -> defined transition properly for vectors 2002-08-13 21:19:30 +00:00
Bill Currie
b0d568d85f local defs for debug info now work 2002-07-17 15:40:08 +00:00
Bill Currie
678a45cfe2 entity fields seem to work. I guess this means separate compilation is now 
useful :)
 2002-07-16 21:59:47 +00:00
Bill Currie
c36b7e36d2 fix external vectors and only complain about undefined externals that are 
actually used
 2002-07-16 20:09:14 +00:00
Bill Currie
3cf754db30 keep the return def out of .qfo files (for now, anyway) 2002-07-12 15:54:46 +00:00
Bill Currie
24d473c386 more linking fixes 2002-07-12 06:17:24 +00:00