// MACRO.C - Macro Definition and Invocation
// Copyright (C) 199x Landon Dyer, 2011 Reboot and Friends
// RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
-// Source Utilised with the Kind Permission of Landon Dyer
+// Source utilised with the kind permission of Landon Dyer
//
#include "macro.h"
#include "symbol.h"
#include "token.h"
+
LONG curuniq; // Current macro's unique number
//TOKEN ** argp; // Free spot in argptrs[]
int macnum; // Unique number for macro definition
//
-// Initialize Macro Processor
+// Initialize macro processor
//
-void init_macro(void)
+void InitMacro(void)
{
macuniq = 0;
macnum = 1;
// argp = NULL;
argp = 0;
- ib_macro();
}
//
-// Exit from a Macro;
+// Exit from a macro;
// -- pop any intervening include files and repeat blocks;
// -- restore argument stack;
// -- pop the macro.
//
-int exitmac(void)
+int ExitMacro(void)
{
+#warning !!! Bad macro exiting !!!
+/*
+This is a problem. Currently, the argument logic just keeps the current
+arguments and doesn't save anything if a new macro is called in the middle
+of another (nested macros). Need to fix that somehow.
+*/
// Pop intervening include files and .rept blocks
while (cur_inobj != NULL && cur_inobj->in_type != SRC_IMACRO)
fpop();
IMACRO * imacro = cur_inobj->inobj.imacro;
curuniq = imacro->im_olduniq;
- /*TOKEN ** p = */argp--;
+// /*TOKEN ** p = */argp--;
// argp = (TOKEN **)*argp;
+ DEBUG printf("ExitMacro: argp: %d -> ", argp);
+ argp -= imacro->im_nargs;
+ DEBUG printf("%d (nargs = %d)\n", argp, imacro->im_nargs);
fpop();
- mjump_align = 0;
return 0;
}
//
-// Add a Formal Argument to a Macro Definition
+// Add a formal argument to a macro definition
//
int defmac2(char * argname)
{
for(;;)
{
- if (tokln() == TKEOF)
+ if (TokenizeLine() == TKEOF)
{
errors("encountered end-of-file looking for '%s'", dirlist);
fatal("cannot continue");
if ((tok[2] == ':' || tok[2] == DCOLON))
{
if (tok[3] == SYMBOL) // label: symbol
-#if 0
- p = (char *)tok[4];
-#else
p = string[tok[4]];
-#endif
}
else
{
-#if 0
- p = (char *)tok[1]; // symbol
-#else
p = string[tok[1]]; // Symbol
-#endif
}
}
int dry_run;
WORD arg_siz = 0;
// TOKEN ** argptr = NULL;
-//Doesn't need to be global! (or does it???)
- argp = 0;
-
- if ((!strcmp(mac->sname, "mjump") || !strcmp(mac->sname, "mpad")) && !in_main)
- {
- error("macro cannot be used outside of .gpumain");
- return ERROR;
- }
+//Doesn't need to be global! (or does it???--it does)
+// argp = 0;
+ DEBUG printf("InvokeMacro: argp: %d -> ", argp);
INOBJ * inobj = a_inobj(SRC_IMACRO); // Alloc and init IMACRO
IMACRO * imacro = inobj->inobj.imacro;
imacro->im_siz = siz;
WORD nargs = 0;
TOKEN * beg_tok = tok; // 'tok' comes from token.c
+ TOKEN * startOfArg;
+ TOKEN * dest;
+ int stringNum = 0;
+ int argumentNum = 0;
+ int i;
for(dry_run=1; ; dry_run--)
{
if (dry_run)
nargs++;
else
+ {
#if 0
*argptr++ = p;
#else
argPtrs[argp++] = p;
+ startOfArg = p;
#endif
+ }
// Keep going while tok isn't pointing at a comma or EOL
while (*tok != ',' && *tok != EOL)
{
case CONST:
case SYMBOL:
+//Shamus: Possible bug. ACONST has 2 tokens after it, not just 1
case ACONST:
if (dry_run)
{
tok++;
}
else
+ {
*p++ = *tok++;
+ }
// FALLTHROUGH (picks up the arg after a CONST, SYMBOL or ACONST)
default:
if (dry_run)
tok++;
}
else
+ {
*p++ = *tok++;
+ }
break;
}
// If we hit the comma instead of an EOL, skip over it
if (*tok == ',')
tok++;
+
+ // Do our QnD token grabbing (this will be redone once we get all
+ // the data structures fixed as this is a really dirty hack)
+ if (!dry_run)
+ {
+ dest = imacro->argument[argumentNum].token;
+ stringNum = 0;
+
+ do
+ {
+ // Remap strings to point the IMACRO internal token storage
+ if (*startOfArg == SYMBOL || *startOfArg == STRING)
+ {
+ *dest++ = *startOfArg++;
+ imacro->argument[argumentNum].string[stringNum] = strdup(string[*startOfArg++]);
+ *dest++ = stringNum++;
+ }
+ else
+ *dest++ = *startOfArg++;
+ }
+ while (*startOfArg != EOL);
+
+ *dest = *startOfArg; // Copy EOL...
+ argumentNum++;
+ }
}
// Allocate space for argument ptrs and so on and then go back and
if (dry_run)
{
if (nargs != 0)
-//Barfing here with memory corruption in glibc. TOKEN is defined as LONG, which is uint32_t
p = (TOKEN *)malloc(arg_siz);
// p = (TOKEN *)malloc(arg_siz + sizeof(TOKEN));
-// This construct is meant to deal with nested macros, so the simple minded way
-// we deal with them now won't work. :-/ Have to think about how to fix.
+/*
+Shamus:
+This construct is meant to deal with nested macros, so the simple minded way
+we deal with them now won't work. :-/ Have to think about how to fix.
+What we could do is simply move the argp with each call, and move it back by
+the number of arguments in the macro that's ending. That would solve the
+problem nicely.
+[Which we do now. But that uncovered another problem: the token strings are all
+stale by the time a nested macro gets to the end. But they're supposed to be
+symbols, which means if we put symbol references into the argument token
+streams, we can alleviate this problem.]
+*/
#if 0
argptr = (TOKEN **)malloc((nargs + 1) * sizeof(LONG));
*argptr++ = (TOKEN *)argp;
argp = argptr;
#else
+ // We don't need to do anything here since we already advance argp
+ // when parsing the arguments.
+// argp += nargs;
#endif
}
else
break;
}
+ DEBUG printf("%d\n", argp);
+
// Setup imacro:
- // o #arguments;
+ // o # arguments;
// o -> macro symbol;
// o -> macro definition string list;
// o save 'curuniq', to be restored when the macro pops;
imacro->im_nextln = mac->lineList;
imacro->im_olduniq = curuniq;
curuniq = macuniq++;
+ imacro->argBase = argp - nargs; // Shamus: keep track of argument base
DEBUG
{
printf("nargs=%d\n", nargs);
- for(nargs=0; nargs<imacro->im_nargs; ++nargs)
+ for(nargs=0; nargs<imacro->im_nargs; nargs++)
{
printf("arg%d=", nargs);
// dumptok(argp[imacro->im_nargs - nargs - 1]);
- dumptok(argPtrs[imacro->im_nargs - nargs - 1]);
+// dumptok(argPtrs[imacro->im_nargs - nargs - 1]);
+ dumptok(argPtrs[(argp - imacro->im_nargs) + nargs]);
}
}
return OK;
}
-
-//
-// Setup inbuilt macros
-//
-void ib_macro(void)
-{
- curmac = NewSymbol("mjump", MACRO, 0);
- curmac->svalue = 0;
- curmac->sattr = (WORD)(macnum++);
- argno = 0;
- defmac2("cc");
- defmac2("addr");
- defmac2("jreg");
-// curmln = NULL;
- curmac->lineList = NULL;
- defmac1(" nop", -1);
- defmac1(" movei #\\addr,\\jreg", -1);
- defmac1(" jump \\cc,(\\jreg)", -1);
- defmac1(" nop", -1);
- defmac1(" nop", -1);
-
- curmac = NewSymbol("mjr", MACRO, 0);
- curmac->svalue = 0;
- curmac->sattr = (WORD)(macnum++);
- argno = 0;
- defmac2("cc");
- defmac2("addr");
-// curmln = NULL;
- curmac->lineList = NULL;
- defmac1(" jr \\cc,\\addr", -1);
- defmac1(" nop", -1);
- defmac1(" nop", -1);
-
- curmac = NewSymbol("mpad", MACRO, 0);
- curmac->svalue = 0;
- curmac->sattr = (WORD)(macnum++);
- argno = 0;
- defmac2("size");
-// curmln = NULL;
- curmac->lineList = NULL;
- defmac1(" .rept (\\size/2)", -1);
- defmac1(" nop", -1);
- defmac1(" .endr", -1);
-}
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