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todo
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Irmen de Jong
@@ -358,7 +358,7 @@ extsub $FF71 = JMPFAR() clobbers(A,X) ; jump without r
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extsub $FF74 = INDFET(ubyte zpaddr @A, ubyte bank @X, ubyte offset @Y) clobbers(X) -> ubyte @A ; fetch byte from another bank (address in zp, ptr in A)
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extsub $FF77 = INDSTA(ubyte value @A, ubyte bank @X, ubyte offset @Y) clobbers(X) ; store byte to another bank (address in zp, ptr in $02b9)
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extsub $FF7A = INDCMP(ubyte value @A, ubyte bank @X, ubyte offset @Y) clobbers(X) -> bool @Pz, bool @Pc, bool @Pv; compare byte in another bank (address in zp, ptr in $02c8)
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extsub $FF7D = PRIMM() ; print immediate string
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extsub $FF7D = PRIMM() ; print immediate string (the 0-terminated string immediately following the JSR PRIMM instruction)
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; ---- C128 specific system utility routines: ----
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@@ -463,7 +463,7 @@ extsub $ff62 = screen_set_charset(ubyte charset @A, uword charsetptr @XY) clobb
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extsub $ff6e = JSRFAR() ; following word = address to call, byte after that=rom/ram bank it is in
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extsub $ff74 = fetch(ubyte zp_startaddr @A, ubyte bank @X, ubyte index @Y) clobbers(X) -> ubyte @A
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extsub $ff77 = stash(ubyte data @A, ubyte bank @X, ubyte index @Y) clobbers(X) ; note: The the zero page address containing the base address is passed in stavec ($03B2)
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extsub $ff7d = PRIMM()
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extsub $ff7d = PRIMM() ; print immediate string (the 0-terminated string immediately following the JSR PRIMM instruction)
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; high level graphics & fonts
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extsub $ff20 = GRAPH_init(uword vectors @R0) clobbers(A,X,Y)
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@@ -1,9 +1,12 @@
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TODO
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====
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- before final release: test all examples and programs again with final version of the compiler!
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Future Things and Ideas
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^^^^^^^^^^^^^^^^^^^^^^^
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- make $8000000 a valid long integer (-2147483648) this is more involved than you think. To make this work: long \|= $80000000
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- implement rest of long comparisons in IfElseAsmGen compareLongValues(): expressions operands that might clobber the R14-R15 registers...
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- struct/ptr: implement the remaining TODOs in PointerAssignmentsGen.
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- struct/ptr: optimize deref in PointerAssignmentsGen: optimize 'forceTemporary' to only use a temporary when the offset is >0
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@@ -16,21 +19,20 @@ Future Things and Ideas
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- struct/ptr: support for typed function pointers? (&routine could be typed by default as well then)
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- struct/ptr: really fixing the pointer dereferencing issues (cursed hybrid beween IdentifierReference, PtrDereferece and PtrIndexedDereference) may require getting rid of scoped identifiers altogether and treat '.' as a "scope or pointer following operator"
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- struct/ptr: (later, nasty parser problem:) support chaining pointer dereference on function calls that return a pointer. (type checking now fails on stuff like func().field and func().next.field)
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- make $8000000 a valid long integer (-2147483648) this is more involved than you think. To make this work: long \|= $80000000
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- array-as-param bug: printf([1111,2,3,-4444]) gives argument type mismatch (param is of type uword), while printf([1111,2,3,4444]) just works fine (passes address of @nosplit array)
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- make memory mapped variables support more constant expressions such as: &uword MyHigh = &mylong1+2
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- allow memory() to occur in array initializer (maybe needed for 2 dimensional arrays?) i.e. make it a constant (see github issue #192)
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- handle Alias in a general way in LiteralsToAutoVarsAndRecombineIdentifiers instead of replacing it scattered over multiple functions
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- After long variable type is completed: make all constants long by default (remove type name altogether), reduce to target type implictly if the actual value fits.
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- After long variable type is completed: make all constants long by default? or not? (remove type name altogether), reduce to target type implictly if the actual value fits.
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This will break some existing programs that depend on value wrap arounds, but gives more intuitive constant number handling.
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Can give descriptive error message for old syntax that still includes the type name?
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- improve ANTLR grammar with better error handling (as suggested by Qwen AI)
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- add documentation for more library modules instead of just linking to the source code
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- add an Index to the documentation
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- allow memory() to occur in array initializer (maybe needed for 2 dimensional arrays?) i.e. make it a constant (see github issue #192)
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- sizeof(pointer) is now always 2 (an uword), make this a variable in the ICompilationTarget so that it could be 4 at the time we might ad a 32-bits 68000 target for example.
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- Two- or even multidimensional arrays and chained indexing, purely as syntactic sugar over regular arrays?
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- when a complete block is removed because unused, suppress all info messages about everything in the block being removed
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- is "checkAssignmentCompatible" redundant (gets called just 1 time!) when we also have "checkValueTypeAndRange" ?
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- enums?
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- fix the c64 multiplexer example
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- romable: should we have a way to explicitly set the memory address for the BSS area (add a -varsaddress and -slabsaddress options?)
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- romable: fix remaining codegens (some for loops, see ForLoopsAsmGen)
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@@ -50,12 +52,13 @@ Future Things and Ideas
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(this is already done hardcoded for several of the builtin functions)
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- more support for (64tass) SEGMENTS in the prog8 syntax itself? maybe %segment blah in blocks?
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- ability to use a sub instead of only a var for @bank ? what for though? dynamic bank/overlay loading?
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- enums?
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- Zig-like try-based error handling where the V flag could indicate error condition? and/or BRK to jump into monitor on failure? (has to set BRK vector for that) But the V flag is also set on certain normal instructions
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IR/VM
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-----
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- getting it in shape for code generation...: the IR file should be able to encode every detail about a prog8 program (the VM doesn't have to actually be able to run all of it though!)
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- getting it in shape for code generation: the IR file should be able to encode every detail about a prog8 program (the VM doesn't have to actually be able to run all of it though!)
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- fix call() return value handling (... what's wrong with it again?)
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- proper code gen for the CALLI instruction and that it (optionally) returns a word value that needs to be assigned to a reg
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- is it possible to use LOADFIELD/STOREFIELD instructions even more?
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@@ -1,26 +1,16 @@
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%import buffers
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%import textio
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%zeropage basicsafe
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main {
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sub start() {
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smallstack.init()
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txt.print("free ")
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txt.print_ub(smallstack.free())
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txt.nl()
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printf([1111,2,3,4444])
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printf([1111,2,3,"bar"])
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printf([1,2,3])
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printf([1111,2,3,-4444])
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smallstack.push(123)
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smallstack.pushw(55555)
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txt.print("free ")
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txt.print_ub(smallstack.free())
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txt.print(" size ")
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txt.print_ub(smallstack.size())
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txt.nl()
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}
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txt.print_uw(smallstack.popw())
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txt.spc()
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txt.print_ub(smallstack.pop())
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txt.nl()
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sub printf(uword argspointer) {
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cx16.r0++
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}
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}
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