//
-// RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
+// RMAC - Reboot's Macro Assembler for all Atari computers
// PROCLN.C - Line Processing
-// Copyright (C) 199x Landon Dyer, 2017 Reboot and Friends
+// Copyright (C) 199x Landon Dyer, 2011-2017 Reboot and Friends
// RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
// Source utilised with the kind permission of Landon Dyer
//
IFENT * ifent; // Current ifent
static IFENT ifent0; // Root ifent
-static IFENT * f_ifent; // Freelist of ifents
-static int disabled; // Assembly conditionally disabled
+IFENT * f_ifent; // Freelist of ifents
+int disabled; // Assembly conditionally disabled
int just_bss; // 1, ds.b in microprocessor mode
VALUE pcloc; // Value of "PC" at beginning of line
SYM * lab_sym; // Label on line (or NULL)
const char lab_ignored[] = "label ignored";
// Table to convert an addressing-mode number to a bitmask.
-LONG amsktab[0112] = {
+LONG amsktab[0124] = {
M_DREG, M_DREG, M_DREG, M_DREG,
M_DREG, M_DREG, M_DREG, M_DREG,
M_AINDEXED, M_AINDEXED, M_AINDEXED, M_AINDEXED,
M_AINDEXED, M_AINDEXED, M_AINDEXED, M_AINDEXED,
- M_ABSW, // 070
- M_ABSL, // 071
- M_PCDISP, // 072
- M_PCINDEXED, // 073
- M_IMMED, // 074
- 0L, // 075
- 0L, // 076
- 0L, // 077
- M_ABASE, // 0100
- M_MEMPOST, // 0101
- M_MEMPRE, // 0102
- M_PCBASE, // 0103
- M_PCMPOST, // 0104
- M_PCMPRE, // 0105
- M_AM_USP, // 0106
- M_AM_SR, // 0107
- M_AM_CCR, // 0110
- M_AM_NONE // 0111
-}; // 0112 length
+ M_ABSW, // 070
+ M_ABSL, // 071
+ M_PCDISP, // 072
+ M_PCINDEXED, // 073
+ M_IMMED, // 074
+ 0L, // 075
+ 0L, // 076
+ 0L, // 077
+ M_ABASE, // 0100
+ M_MEMPOST, // 0101
+ M_MEMPRE, // 0102
+ M_PCBASE, // 0103
+ M_PCMPOST, // 0104
+ M_PCMPRE, // 0105
+ M_AM_USP, // 0106
+ M_AM_SR, // 0107
+ M_AM_CCR, // 0110
+ M_AM_NONE, // 0111
+ 0x30, // 0112
+ 0x30, // 0113
+ 0L, // 0114
+ 0L, // 0115
+ 0L, // 0116
+ 0L, // 0117
+ M_CACHE40, // 0120
+ M_CREG, // 0121
+ M_FREG, // 0122
+ M_FPSCR // 0123
+}; // 0123 length
// Function prototypes
// Get another line of tokens
if (TokenizeLine() == TKEOF)
{
-if (debug) printf("Assemble: Found TKEOF flag...\n");
+DEBUG { printf("Assemble: Found TKEOF flag...\n"); }
if (list_flag && listflag) // Flush last line of source
listeol();
return;
}
- DEBUG DumpTokenBuffer();
+ DEBUG { DumpTokenBuffer(); }
if (list_flag)
{
// First token MUST be a symbol (Shamus: not sure why :-/)
if (*tok != SYMBOL)
{
- error("syntax error; expected symbol");
+ if ((*tok >= KW_D0) && (*tok <= KW_R31))
+ error("cannot use reserved keyword as label name or .equ");
+ else
+ error("syntax error; expected symbol");
+
goto loop;
}
// Check for ".b" ".w" ".l" after directive, macro or mnemonic.
siz = SIZN;
- if (*tok == DOTW)
- siz = SIZW, tok++;
- else if (*tok == DOTL)
- siz = SIZL, tok++;
- else if (*tok == DOTB)
- siz = SIZB, tok++;
+ switch (*tok)
+ {
+ case DOTW: siz = SIZW, tok++; break;
+ case DOTL: siz = SIZL, tok++; break;
+ case DOTB: siz = SIZB, tok++; break;
+ case DOTD: siz = SIZD, tok++; break;
+ case DOTP: siz = SIZP, tok++; break;
+ case DOTQ: siz = SIZQ, tok++; break;
+ case DOTS: siz = SIZS, tok++; break;
+ case DOTX: siz = SIZX, tok++; break;
+ }
+
// Do special directives (500..999) (These must be handled in "real time")
if (state >= 500 && state < 1000)
{
case MN_IF:
d_if();
- goto loop;
+ goto loop;
+
case MN_ELSE:
d_else();
goto loop;
+
case MN_ENDIF:
d_endif();
goto loop;
+
case MN_IIF: // .iif --- immediate if
if (disabled || expr(exprbuf, &eval, &eattr, &esym) != OK)
goto loop;
goto loop;
goto loop1;
+
case MN_MACRO: // .macro --- macro definition
if (!disabled)
{
}
goto loop;
+
case MN_EXITM: // .exitm --- exit macro
case MN_ENDM: // .endm --- same as .exitm
if (!disabled)
}
goto loop;
+
case MN_REPT:
if (!disabled)
{
goto loop;
}
- defrept();
+ HandleRept();
}
goto loop;
+
case MN_ENDR:
if (!disabled)
error("mis-nested .endr");
}
else
{
- errors("multiple equate to '%s'", sy->sname);
+ error("multiple equate to '%s'", sy->sname);
goto loop;
}
}
if ((sy = lookup(opname, MACRO, 0)) != NULL)
InvokeMacro(sy, siz);
else
- errors("unknown op '%s'", opname);
+ error("unknown op '%s'", opname);
goto loop;
}
}
// Do mnemonics
- // o can't deposit instrs in BSS or ABS
- // o do automatic .EVEN for instrs
- // o allocate space for largest possible instr
- // o can't do ".b" operations with an address register
+ // o can't deposit instrs in BSS or ABS
+ // o do automatic .EVEN for instrs
+ // o allocate space for largest possible instr
+ // o can't do ".b" operations with an address register
if (scattr & SBSS)
{
error("cannot initialize non-storage (BSS) section");
symbol->sattre = 0;
}
else if (symbol->sattr & DEFINED)
- return errors("multiply-defined label '%s'", label);
+ return error("multiply-defined label '%s'", label);
// Put symbol in "order of definition" list if it's not already in it
AddToSymbolDeclarationList(symbol);
lab_sym = symbol;
+ // Yes, our CS professors told us to write checks for equality this way,
+ // but damn, it hurts my brain every time I look at it. :-/
if (0 == environment)
curenv++;
}
-//
-// .if, Start conditional assembly
-//
-int d_if(void)
-{
- IFENT * rif;
- WORD eattr;
- VALUE eval;
- SYM * esym;
-
- // Alloc an IFENTRY
- if ((rif = f_ifent) == NULL)
- rif = (IFENT *)malloc(sizeof(IFENT));
- else
- f_ifent = rif->if_prev;
-
- rif->if_prev = ifent;
- ifent = rif;
-
- if (!disabled)
- {
- if (expr(exprbuf, &eval, &eattr, &esym) != OK)
- return 0;
-
- if ((eattr & DEFINED) == 0)
- return error(undef_error);
-
- disabled = !eval;
- }
-
- rif->if_state = (WORD)disabled;
- return 0;
-}
-
-
-//
-// .else, Do alternate case for .if
-//
-int d_else(void)
-{
- IFENT * rif = ifent;
-
- if (rif->if_prev == NULL)
- return error("mismatched .else");
-
- if (disabled)
- disabled = rif->if_prev->if_state;
- else
- disabled = 1;
-
- rif->if_state = (WORD)disabled;
- return 0;
-}
-
-
-//
-// .endif, End of conditional assembly block
-// This is also called by fpop() to pop levels of IFENTs in case a macro or
-// include file exits early with `exitm' or `end'.
-//
-int d_endif (void)
-{
- IFENT * rif = ifent;
-
- if (rif->if_prev == NULL)
- return error("mismatched .endif");
-
- ifent = rif->if_prev;
- disabled = rif->if_prev->if_state;
- rif->if_prev = f_ifent;
- f_ifent = rif;
- return 0;
-}
-
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