//
-// RMAC - Reboot's Macro Assembler for all Atari computers
+// RMAC - Renamed Macro Assembler for all Atari computers
// SYMBOL.C - Symbol Handling
-// Copyright (C) 199x Landon Dyer, 2011-2020 Reboot and Friends
+// Copyright (C) 199x Landon Dyer, 2011-2022 Reboot and Friends
// RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
// Source utilised with the kind permission of Landon Dyer
//
// Internal function prototypes
static uint16_t WriteLODSection(int, uint16_t);
-
//
// Initialize symbol table
//
currentUID = 0;
}
-
//
// Hash the ASCII name and enviroment number
//
return sum & (NBUCKETS - 1);
}
-
//
// Make a new symbol of type 'type' in enviroment 'envno'
//
symbol->sorder = NULL;
symbol->uid = currentUID++;
+ // Record filename the symbol is defined (for now only used by macro error reporting)
+ symbol->cfileno = cfileno;
+
// Install symbol in the symbol table
int hash = HashSymbol(name, envno);
symbol->snext = symbolTable[hash];
return symbol;
}
-
//
// Look up the symbol name by its UID and return the pointer to the name.
// If it's not found, return NULL.
return NULL;
}
-
//
// Lookup the symbol 'name', of the specified type, with the specified
// enviroment level
return symbol;
}
-
//
// Put symbol on "order-of-declaration" list of symbols
//
sdecltail = symbol;
}
-
//
// Make all referenced, undefined symbols global
//
}
}
-
//
// Assign numbers to symbols that are to be exported or imported. The symbol
// number is put in 'senv'. Returns the number of symbols that will be in the
// count of the # of symbols in the symbol table, and the second is to
// actually create it.
//
-uint32_t sy_assign(uint8_t * buf, uint8_t *(* construct)())
+uint32_t AssignSymbolNos(uint8_t * buf, uint8_t *(* construct)())
{
uint16_t scount = 0;
// them. We also pick which symbols should be global or not here.
for(SYM * sy=sdecl; sy!=NULL; sy=sy->sdecl)
{
+ // Skip non-labels
+ if (sy->stype != LABEL)
+ continue;
+
+ // Nuke equated register/CC symbols from orbit:
+ if (sy->sattre & (EQUATEDREG | UNDEF_EQUR | EQUATEDCC | UNDEF_CC))
+ continue;
+
// Export or import external references, and export COMMON blocks.
- if ((sy->stype == LABEL)
- && ((sy->sattr & (GLOBAL | DEFINED)) == (GLOBAL | DEFINED)
- || (sy->sattr & (GLOBAL | REFERENCED)) == (GLOBAL | REFERENCED))
+ // N.B.: This says to mark the symbol as global if either 1) the symbol
+ // is global AND the symbol is defined OR referenced, or 2) this
+ // symbol is a common symbol.
+ if (((sy->sattr & GLOBAL) && (sy->sattr & (DEFINED | REFERENCED)))
|| (sy->sattr & COMMON))
{
sy->senv = scount++;
}
// Export vanilla labels (but don't make them global). An exception is
// made for equates, which are not exported unless they are referenced.
- else if (sy->stype == LABEL && lsym_flag
- && (sy->sattr & (DEFINED | REFERENCED)) != 0
- && (!as68_flag || *sy->sname != 'L'))
+ // ^^^ The above just might be bullshit. ^^^
+ // N.B.: This says if the symbol is either defined OR referenced (but
+ // because of the above we know it *won't* be GLOBAL). And
+ // lsym_flag is always set true in Process() in rmac.c.
+ else if (lsym_flag && (sy->sattr & (DEFINED | REFERENCED)))
{
sy->senv = scount++;
return scount;
}
-
//
-// Custom version of sy_assign for ELF .o files.
+// Custom version of AssignSymbolNos for ELF .o files.
// The order that the symbols should be dumped is different.
// (globals must be explicitly at the end of the table)
//
-// N.B.: It should be possible to merge this with sy_assign, as there's nothing
-// really ELF specific in here, other than the "globals go at the end of
-// the queue" thing, which doesn't break the others. :-P
-uint32_t sy_assign_ELF(uint8_t * buf, uint8_t *(* construct)())
+// N.B.: It should be possible to merge this with AssignSymbolNos, as there's
+// nothing really ELF specific in here, other than the "globals go at the
+// end of the queue" thing, which doesn't break the others. :-P
+uint32_t AssignSymbolNosELF(uint8_t * buf, uint8_t *(* construct)())
{
uint16_t scount = 0;
-// if (construct == (uint8_t *(*)())constr_elfsymtab)
-// if (buf == NULL)
- {
- // Append all symbols not appearing on the .sdecl list to the end of
- // the .sdecl list
- for(SYM * sy=sorder; sy!=NULL; sy=sy->sorder)
- AddToSymbolDeclarationList(sy);
- }
+ // Append all symbols not appearing on the .sdecl list to the end of
+ // the .sdecl list
+ for(SYM * sy=sorder; sy!=NULL; sy=sy->sorder)
+ AddToSymbolDeclarationList(sy);
// Run through all symbols (now on the .sdecl list) and assign numbers to
// them. We also pick which symbols should be global or not here.
if (sy->stype == LABEL && lsym_flag
&& (sy->sattr & (DEFINED | REFERENCED)) != 0
&& (*sy->sname != '.')
- && (sy->sattr & GLOBAL) == 0)
+ && (sy->sattr & GLOBAL) == 0
+ && (sy->sattre & (EQUATEDREG | UNDEF_EQUR | EQUATEDCC | UNDEF_CC)) == 0)
{
sy->senv = scount++;
for(SYM * sy=sdecl; sy!=NULL; sy=sy->sdecl)
{
if ((sy->stype == LABEL)
+ && (sy->sattre & (EQUATEDREG | UNDEF_EQUR | EQUATEDCC | UNDEF_CC)) == 0
&& ((sy->sattr & (GLOBAL | DEFINED)) == (GLOBAL | DEFINED)
|| (sy->sattr & (GLOBAL | REFERENCED)) == (GLOBAL | REFERENCED))
|| (sy->sattr & COMMON))
if (buf != NULL)
buf = construct(buf, sy, 1);
}
- else if ((sy->sattr == (GLOBAL | REFERENCED)) && (buf != NULL))
+ else if ((sy->sattr == (GLOBAL | REFERENCED)) && (buf != NULL) && (sy->sattre & (EQUATEDREG | UNDEF_EQUR | EQUATEDCC | UNDEF_CC)) == 0)
{
- buf = construct(buf, sy, 0);
+ buf = construct(buf, sy, 0); // <-- this creates a NON-global symbol...
scount++;
}
}
return scount;
}
-
//
// Helper function for dsp_lod_symbols
//
return symbolCount;
}
-
//
// Dump LOD style symbols into the passed in buffer
//
//WriteLODSection(M56001?, count);
}
-
//
// Convert string to uppercase
//
}
}
-
//
// Generate symbol table for listing file
//
return 0;
}
-
projects / rmac / blobdiff