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110 commits

Author SHA1 Message Date
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