X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?p=rmac;a=blobdiff_plain;f=direct.c;h=7673d29c18eb0089d848148b427b0ef5fd1992f0;hp=8d4f3fdc53fc5dd601a9964f938db63402045704;hb=75969398d9b8a9f82ea76fc4e4cbfb97b11160a4;hpb=49cce96fba11282e4244187f15be418d5ae5bb8d

diff --git a/direct.c b/direct.c
index 8d4f3fd..7673d29 100644
--- a/direct.c
+++ b/direct.c
@@ -8,7 +8,7 @@
 
 #include "direct.h"
 #include "sect.h"
-#include "risca.h"
+#include "riscasm.h"
 #include "error.h"
 #include "token.h"
 #include "procln.h"
@@ -21,80 +21,73 @@
 #define DEF_KW
 #include "kwtab.h"
 
-TOKEN exprbuf[128];		// Expression buffer 
+
+TOKEN exprbuf[128];			// Expression buffer 
+SYM * symbolPtr[1000000];	// Symbol pointers table
+static long unused;			// For supressing 'write' warnings
+
 
 // Directive handler table
 int (*dirtab[])() = {
-   d_org,				// 0 org
-   d_even,				// 1 even
-   d_unimpl,			// 2 .6502
-   d_68000,				// 3 .68000 
-   d_bss,				// 4 bss
-   d_data,				// 5 data 
-   d_text,				// 6 text 
-   d_abs,				// 7 abs 
-   d_comm,				// 8 comm 
-   d_init,				// 9 init 
-   d_cargs,				// 10 cargs 
-   d_goto,				// 11 goto 
-   d_dc,				// 12 dc 
-   d_ds,				// 13 ds 
-   d_undmac,			// 14 undefmac 
-   d_gpu,				// 15 .gpu
-   d_dsp,				// 16 .dsp
-   d_dcb,				// 17 dcb 
-   d_unimpl,			// 18* set 
-   d_unimpl,			// 19* reg 
-   d_unimpl,			// 20 dump 
-   d_incbin,			// 21 .incbin //load 
-   d_unimpl,			// 22 disable 
-   d_unimpl,			// 23 enable 
-   d_globl,				// 24 globl 
-   d_regbank0,			// 25 .regbank0
-   d_regbank1,			// 26 .regbank1
-   d_unimpl,			// 27 xdef 
-   d_assert,			// 28 assert 
-   d_unimpl,			// 29* if 
-   d_unimpl,			// 30* endif 
-   d_unimpl,			// 31* endc 
-   d_unimpl,			// 32* iif 
-   d_include,			// 33 include 
-   fpop,				// 34 end 
-   d_unimpl,			// 35* macro 
-   exitmac,				// 36* exitm 
-   d_unimpl,			// 37* endm 
-   d_list,				// 38 list 
-   d_nlist,				// 39 nlist 
-   d_long,				// 40* rept 
-   d_phrase,			// 41* endr 
-   d_dphrase,			// 42 struct 
-   d_qphrase,			// 43 ends 
-   d_title,				// 44 title 
-   d_subttl,			// 45 subttl 
-   eject,				// 46 eject 
-   d_unimpl,			// 47 error 
-   d_unimpl,			// 48 warn 
-   d_noclear,			// 49 .noclear
-   d_equrundef,			// 50 .equrundef/.regundef
-   d_ccundef,			// 51 .ccundef
-   d_print,				// 52 .print
-   d_gpumain,			// 53 .gpumain
-   d_jpad,				// 54 .jpad
-   d_nojpad,			// 55 .nojpad
-   d_fail,				// 56 .fail
+	d_org,				// 0 org
+	d_even,				// 1 even
+	d_unimpl,			// 2 .6502
+	d_68000,			// 3 .68000 
+	d_bss,				// 4 bss
+	d_data,				// 5 data 
+	d_text,				// 6 text 
+	d_abs,				// 7 abs 
+	d_comm,				// 8 comm 
+	d_init,				// 9 init 
+	d_cargs,			// 10 cargs 
+	d_goto,				// 11 goto 
+	d_dc,				// 12 dc 
+	d_ds,				// 13 ds 
+	d_undmac,			// 14 undefmac 
+	d_gpu,				// 15 .gpu
+	d_dsp,				// 16 .dsp
+	d_dcb,				// 17 dcb 
+	d_unimpl,			// 18* set 
+	d_unimpl,			// 19* reg 
+	d_unimpl,			// 20 dump 
+	d_incbin,			// 21 .incbin //load 
+	d_unimpl,			// 22 disable 
+	d_unimpl,			// 23 enable 
+	d_globl,			// 24 globl 
+	d_regbank0,			// 25 .regbank0
+	d_regbank1,			// 26 .regbank1
+	d_unimpl,			// 27 xdef 
+	d_assert,			// 28 assert 
+	d_unimpl,			// 29* if 
+	d_unimpl,			// 30* endif 
+	d_unimpl,			// 31* endc 
+	d_unimpl,			// 32* iif 
+	d_include,			// 33 include 
+	fpop,				// 34 end 
+	d_unimpl,			// 35* macro 
+	ExitMacro,			// 36* exitm 
+	d_unimpl,			// 37* endm 
+	d_list,				// 38 list 
+	d_nlist,			// 39 nlist 
+	d_long,				// 40* rept 
+	d_phrase,			// 41* endr 
+	d_dphrase,			// 42 struct 
+	d_qphrase,			// 43 ends 
+	d_title,			// 44 title 
+	d_subttl,			// 45 subttl 
+	eject,				// 46 eject 
+	d_unimpl,			// 47 error 
+	d_unimpl,			// 48 warn 
+	d_noclear,			// 49 .noclear
+	d_equrundef,		// 50 .equrundef/.regundef
+	d_ccundef,			// 51 .ccundef
+	d_print,			// 52 .print
+	d_cstruct,			// 53 .cstruct
+	d_jpad,				// 54 .jpad (deprecated)
+	d_nojpad,			// 55 .nojpad (deprecated)
 };
 
 
-//
-// .fail - User abort
-//
-int d_fail(void)
-{
-	fatal("user abort");
-	return 0;
-}
-
-
 //
 // .org - Set origin
 //
@@ -120,23 +113,6 @@ int d_org(void)
 }
 
 
-//
-// NOP Padding Directive
-//
-int d_jpad(void)
-{
-	jpad = 1;
-	return 0;
-}
-
-
-int d_nojpad(void)
-{
-	jpad = 0;
-	return 0;
-}
-
-
 //
 // Print Directive
 //
@@ -158,11 +134,12 @@ int d_print(void)
 		switch(*tok)
 		{
 		case STRING:
-			sprintf(prntstr, "%s", (char *)tok[1]);
+//			sprintf(prntstr, "%s", (char *)tok[1]);
+			sprintf(prntstr, "%s", string[tok[1]]);
 			printf("%s", prntstr);
 
 			if (list_fd) 
-				write(list_fd, prntstr, (LONG)strlen(prntstr));
+				unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
 
 			tok += 2;
 			break;
@@ -172,7 +149,8 @@ int d_print(void)
 			if (tok[1] != SYMBOL)
 				goto token_err;
 
-			strcpy(prntstr, (char *)tok[2]);
+//			strcpy(prntstr, (char *)tok[2]);
+			strcpy(prntstr, string[tok[2]]);
 
 			switch(prntstr[0])
 			{
@@ -211,7 +189,7 @@ int d_print(void)
 				printf("%s", prntstr);
 
 				if (list_fd) 
-					write(list_fd, prntstr, (LONG)strlen(prntstr));
+					unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
 
 				formatting = 0;
 				wordlong = 0;
@@ -249,11 +227,13 @@ int d_ccundef(void)
 
 	if (*tok != SYMBOL)
 	{
-		error(syntax_error);
+//		error(syntax_error);
+		error("syntax error; expected symbol");
 		return ERROR;
 	}
 
-	ccname = lookup((char *)tok[1], LABEL, 0);
+//	ccname = lookup((char *)tok[1], LABEL, 0);
+	ccname = lookup(string[tok[1]], LABEL, 0);
 
 	// Make sure symbol is a valid ccdef
 	if (!ccname || !(ccname->sattre & EQUATEDCC))
@@ -284,19 +264,21 @@ int d_equrundef(void)
 
 	while (*tok != EOL)
 	{
-		// Skip preceeding or seperating commas
+		// Skip preceeding or seperating commas (if any)
 		if (*tok == ',')
 			tok++;
 
 		// Check we are dealing with a symbol
 		if (*tok != SYMBOL)
 		{
-			error(syntax_error);
+//			error(syntax_error);
+			error("syntax error; expected symbol");
 			return ERROR;
 		}
 
 		// Lookup and undef if equated register
-		regname = lookup((char *)tok[1], LABEL, 0);
+//		regname = lookup((char *)tok[1], LABEL, 0);
+		regname = lookup(string[tok[1]], LABEL, 0);
 
 		if (regname && (regname->sattre & EQUATEDREG))
 			regname->sattre |= UNDEF_EQUR;
@@ -323,37 +305,58 @@ int d_noclear(void)
 //
 int d_incbin(void)
 {
-	int i, j;
+	int fd;
 	int bytes = 0;
-	long pos, size;
-	char buf;
+	long pos, size, bytesRead;
+	char msg[256];
+
+	// Check to see if we're in BSS, and, if so, throw an error
+	if (scattr & SBSS)
+	{
+		errors("cannot include binary file \"%s\" in BSS section", string[tok[1]]);
+		return ERROR;
+	}
 
 	if (*tok != STRING)
 	{
-		error(syntax_error);
+//		error(syntax_error);
+		error("syntax error; string missing");
 		return ERROR;
 	}
 
-	if ((j = open((char *)tok[1],  _OPEN_INC)) >= 0)
+	if ((fd = open(string[tok[1]],  _OPEN_INC)) < 0)
 	{
-		size = lseek(j, 0L, SEEK_END);
-		chcheck(size);
-		pos = lseek(j, 0L, SEEK_SET);
-		
-		for(i=0; i<size; i++)
-		{
-			buf = '\0';
-			bytes = read(j, &buf, 1);
-			D_byte(buf);
-		}
+		errors("cannot open include binary file (%s)", string[tok[1]]);
+		return ERROR;
 	}
-	else
+
+	size = lseek(fd, 0L, SEEK_END);
+	pos = lseek(fd, 0L, SEEK_SET);
+	chcheck(size);
+
+	DEBUG { printf("INCBIN: File '%s' is %li bytes.\n", string[tok[1]], size); }
+
+	char * fileBuffer = (char *)malloc(size);
+	bytesRead = read(fd, fileBuffer, size);
+
+	if (bytesRead != size)
 	{
-		errors("cannot open include binary file (%s)", (char *)tok[1]);
+		sprintf(msg, "was only able to read %li bytes from binary file (%s, %li bytes)", bytesRead, string[tok[1]], size);
+		error(msg);
 		return ERROR;
 	}
 
-	close(j);
+//#define D_byte(b)    {*chptr++=(char)b; ++sloc; ++ch_size; if(orgactive) ++orgaddr;}
+	memcpy(chptr, fileBuffer, size);
+	chptr += size;
+	sloc += size;
+	ch_size += size;
+
+	if (orgactive)
+		orgaddr += size;
+
+	free(fileBuffer);
+	close(fd);
 	return 0;
 }
 
@@ -363,14 +366,16 @@ int d_incbin(void)
 //
 int d_regbank0(void)
 {
-	regbank = BANK_0;                                        // Set active register bank zero
+	// Set active register bank zero
+	regbank = BANK_0;
 	return 0;
 }
 
 
 int d_regbank1(void)
 {
-	regbank = BANK_1;                                        // Set active register bank one
+	// Set active register bank one
+	regbank = BANK_1;
 	return 0;
 }
 
@@ -595,7 +600,11 @@ int symlist(int(* func)())
 		if (*tok != SYMBOL)
 			return error(em);
 
+#if 0
 		if ((*func)(tok[1]) != OK)
+#else
+		if ((*func)(string[tok[1]]) != OK)
+#endif
 			break;
 
 		tok += 2;
@@ -624,15 +633,23 @@ int d_include(void)
 	char buf[128];
 	char buf1[128];
 
-	if (*tok == STRING)                                       // Leave strings ALONE 
+	if (*tok == STRING)							// Leave strings ALONE 
+#if 0
 		fn = (char *)*++tok;
+#else
+		fn = string[*++tok];
+#endif
 	else if (*tok == SYMBOL)					// Try to append ".s" to symbols
 	{
+#if 0
 		strcpy(buf, (char *)*++tok);
+#else
+		strcpy(buf, string[*++tok]);
+#endif
 		fext(buf, ".s", 0);
 		fn = &buf[0];
 	}
-	else                                                   // Punt if no STRING or SYMBOL 
+	else										// Punt if no STRING or SYMBOL 
 		return error("missing filename");
 
 	// Make sure the user didn't try anything like:
@@ -640,15 +657,16 @@ int d_include(void)
 	if (*++tok != EOL)
 		return error("extra stuff after filename -- enclose it in quotes");
 
-	// Attempt to open the include file in the current directory, then (if that failed) try list
-	// of include files passed in the enviroment string or by the "-d" option.
+	// Attempt to open the include file in the current directory, then (if that
+	// failed) try list of include files passed in the enviroment string or by
+	// the "-d" option.
 	if ((j = open(fn, 0)) < 0)
 	{
-		for(i=0; nthpath("RMACPATH", i, buf1)!=0; ++i)
+		for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
 		{
 			j = strlen(buf1);
 
-			if (j > 0 && buf1[j-1] != SLASHCHAR)                // Append path char if necessary 
+			if (j > 0 && buf1[j - 1] != SLASHCHAR)	// Append path char if necessary 
 				strcat(buf1, SLASHSTRING);
 
 			strcat(buf1, fn);
@@ -703,7 +721,7 @@ int globl1(char * p)
 
 	if ((sy = lookup(p, LABEL, 0)) == NULL)
 	{
-		sy = newsym(p, LABEL, 0);
+		sy = NewSymbol(p, LABEL, 0);
 		sy->svalue = 0;
 		sy->sattr = GLOBAL;
 	}
@@ -795,6 +813,9 @@ int d_bss(void)
 //
 int d_ds(WORD siz)
 {
+if (verb_flag)
+	printf("Directive: .ds.[size] = %u, sloc = $%X\n", siz, sloc);
+
 	VALUE eval;
 
 	// This gets kind of stupid.  This directive is disallowed in normal 68000
@@ -813,7 +834,7 @@ int d_ds(WORD siz)
 	// In non-TDB section (BSS, ABS and M6502) just advance the location
 	// counter appropriately. In TDB sections, deposit (possibly large) chunks
 	//of zeroed memory....
-	if ((scattr & SBSS))
+	if (scattr & SBSS)
 	{
 		listvalue(eval);
 		eval *= siz;
@@ -822,7 +843,7 @@ int d_ds(WORD siz)
 	}
 	else
 	{
-		dep_block(eval, siz, (VALUE)0, (WORD)(DEFINED|ABS), NULL);
+		dep_block(eval, siz, (VALUE)0, (WORD)(DEFINED | ABS), NULL);
 	}
 
 	at_eol();
@@ -854,12 +875,13 @@ int d_dc(WORD siz)
 		// dc.b 'string' [,] ...
 		if (siz == SIZB && *tok == STRING && (tok[2] == ',' || tok[2] == EOL))
 		{
-			i = strlen((const char*)tok[1]);
+//			i = strlen((const char*)tok[1]);
+			i = strlen(string[tok[1]]);
 
 			if ((challoc - ch_size) < i) 
 				chcheck(i);
 
-			for(p=(char *)tok[1]; *p!=EOS; ++p)
+			for(p=string[tok[1]]; *p!=EOS; ++p)
 				D_byte(*p);
 
 			tok += 2;
@@ -888,7 +910,7 @@ int d_dc(WORD siz)
 		case SIZB:
 			if (!defined)
 			{
-				fixup(FU_BYTE|FU_SEXT, sloc, exprbuf);
+				fixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
 				D_byte(0);
 			}
 			else
@@ -907,7 +929,7 @@ int d_dc(WORD siz)
 		case SIZN:
 			if (!defined)
 			{
-				fixup(FU_WORD|FU_SEXT, sloc, exprbuf);
+				fixup(FU_WORD | FU_SEXT, sloc, exprbuf);
 				D_word(0);
 			}
 			else
@@ -927,7 +949,7 @@ int d_dc(WORD siz)
 			if (!defined)
 			{
 				if (movei)
-					fixup(FU_LONG|FU_MOVEI, sloc, exprbuf);
+					fixup(FU_LONG | FU_MOVEI, sloc, exprbuf);
 				else
 					fixup(FU_LONG, sloc, exprbuf);
 
@@ -1075,7 +1097,7 @@ int dep_block(VALUE count, WORD siz, VALUE eval, WORD eattr, TOKEN * exprbuf)
 		case SIZB:
 			if (!defined)
 			{
-				fixup(FU_BYTE|FU_SEXT, sloc, exprbuf);
+				fixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
 				D_byte(0);
 			}
 			else
@@ -1094,7 +1116,7 @@ int dep_block(VALUE count, WORD siz, VALUE eval, WORD eattr, TOKEN * exprbuf)
 		case SIZN:
 			if (!defined)
 			{
-				fixup(FU_WORD|FU_SEXT, sloc, exprbuf);
+				fixup(FU_WORD | FU_SEXT, sloc, exprbuf);
 				D_word(0);
 			}
 			else
@@ -1144,29 +1166,30 @@ int d_comm(void)
 	if (*tok != SYMBOL)
 		return error("missing symbol");
 
-	p = (char *)tok[1];
+//	p = (char *)tok[1];
+	p = string[tok[1]];
 	tok += 2;
 
-	if (*p == '.')                                            // Cannot .comm a local symbol
+	if (*p == '.')							// Cannot .comm a local symbol
 		return error(locgl_error);
 
 	if ((sym = lookup(p, LABEL, 0)) == NULL)
-		sym = newsym(p, LABEL, 0);
+		sym = NewSymbol(p, LABEL, 0);
 	else
 	{
 		if (sym->sattr & DEFINED)
 			return error(".comm symbol already defined");
 	}
 
-	sym->sattr = GLOBAL|COMMON|BSS;
+	sym->sattr = GLOBAL | COMMON | BSS;
 
 	if (*tok++ != ',')
 		return error(comma_error);
 
-	if (abs_expr(&eval) != OK)                                // Parse size of common region
+	if (abs_expr(&eval) != OK)				// Parse size of common region
 		return 0;
 
-	sym->svalue = eval;                                      // Install common symbol's size
+	sym->svalue = eval;						// Install common symbol's size
 	at_eol();
 	return 0;
 }
@@ -1178,7 +1201,7 @@ int d_comm(void)
 int d_list(void)
 {
 	if (list_flag)
-		++listing;
+		listing++;
 
 	return 0;
 }
@@ -1190,7 +1213,7 @@ int d_list(void)
 int d_nlist(void)
 {
 	if (list_flag)
-		--listing;
+		listing--;
 
 	return 0;
 }
@@ -1202,7 +1225,6 @@ int d_nlist(void)
 int d_68000(void)
 {
 	rgpu = rdsp = 0;
-	in_main = 0;
 	// Switching from gpu/dsp sections should reset any ORG'd Address
 	orgactive = 0;                               
 	orgwarning = 0;
@@ -1230,39 +1252,9 @@ int d_gpu(void)
 		orgwarning = 0;
 	}
 
-	rgpu = 1;                                                // Set GPU assembly
-	rdsp = 0;                                                // Unset DSP assembly
-	regbank = BANK_N;                                        // Set no default register bank
-	in_main = 0;
-	jpad = 0;
-	return 0;
-}
-
-
-//
-// GPU Main Code Directive
-//
-
-int d_gpumain(void)
-{
-	if ((cursect != TEXT) && (cursect != DATA))
-	{
-		error(".gpumain can only be used in the TEXT or DATA segments");
-		return ERROR;
-	}
-
-	// If previous section was dsp or 68000 then we need to reset ORG'd Addresses
-	if (!rgpu)
-	{
-		orgactive = 0;
-		orgwarning = 0;
-	}
-
-	rgpu = 1;                                                // Set GPU assembly
-	rdsp = 0;                                                // Unset DSP assembly
-	regbank = BANK_N;                                        // Set no default register bank
-	in_main = 1;                                             // Enable main code execution rules
-	jpad = 0;
+	rgpu = 1;			// Set GPU assembly
+	rdsp = 0;			// Unset DSP assembly
+	regbank = BANK_N;	// Set no default register bank
 	return 0;
 }
 
@@ -1285,11 +1277,9 @@ int d_dsp(void)
 		orgwarning = 0;
 	}
 
-	rdsp = 1;                                                // Set DSP assembly
-	rgpu = 0;                                                // Unset GPU assembly
-	regbank = BANK_N;                                        // Set no default register bank
-	in_main = 0;
-	jpad = 0;
+	rdsp = 1;			// Set DSP assembly
+	rgpu = 0;			// Unset GPU assembly
+	regbank = BANK_N;	// Set no default register bank
 	return 0;
 }
 
@@ -1298,17 +1288,18 @@ int d_dsp(void)
 // .cargs [#offset], symbol[.size], ...
 // 
 // Lists of registers may also be mentioned; they just take up space. Good for
-// "documentation" purposes.
+// "documentation" purposes:
 // 
-// .cargs a6,.arg1, .arg2, .arg3...
+// .cargs a6, .arg1, .arg2, .arg3...
 // 
-// The symbols are ABS and EQUATED.
+// Symbols thus created are ABS and EQUATED.
 //
 int d_cargs(void)
 {
-	VALUE eval;
+	VALUE eval = 4;		// Default to 4 if no offset specified (to account for
+						// return address)
 	WORD rlist;
-	SYM * sy;
+	SYM * symbol;
 	char * p;
 	int env;
 	int i;
@@ -1318,92 +1309,233 @@ int d_cargs(void)
 
 	if (*tok == '#')
 	{
-		++tok;
+		tok++;
 
 		if (abs_expr(&eval) != OK)
 			return 0;
 
-		if (*tok == ',')                                       // Eat comma if it's there
-			++tok;
+		// Eat the comma, if it's there
+		if (*tok == ',')
+			tok++;
 	}
-	else 
-		eval = 4;
 
 	for(;;)
 	{
 		if (*tok == SYMBOL)
 		{
-			p = (char *)tok[1];
+//			p = (char *)tok[1];
+			p = string[tok[1]];
 
+#if 0
 			if (*p == '.')
-				env = curenv;
+				env = curenv;			// Label is local
 			else
-				env = 0;
-
-			sy = lookup(p, LABEL, env);
-
-			if (sy == NULL)
+				env = 0;				// Label is global
+#else
+			// Set env to either local (dot prefixed) or global scope
+			env = (*p == '.' ? curenv : 0);
+#endif
+			symbol = lookup(p, LABEL, env);
+
+			if (symbol == NULL)
 			{
-				sy = newsym(p, LABEL, env);
-				sy->sattr = 0;
+				symbol = NewSymbol(p, LABEL, env);
+				symbol->sattr = 0;
 			}
-			else if (sy->sattr & DEFINED)
+			else if (symbol->sattr & DEFINED)
 				return errors("multiply-defined label '%s'", p);
 
 			// Put symbol in "order of definition" list
-			if (!(sy->sattr & SDECLLIST))
-				sym_decl(sy);
+			if (!(symbol->sattr & SDECLLIST))
+				sym_decl(symbol);
 
-			sy->sattr |= ABS|DEFINED|EQUATED;
-			sy->svalue = eval;
+			symbol->sattr |= (ABS | DEFINED | EQUATED);
+			symbol->svalue = eval;
 			tok += 2;
 
-			switch((int)*tok)
+			// What this does is eat any dot suffixes attached to a symbol. If
+			// it's a .L, it adds 4 to eval; if it's .W or .B, it adds 2. If
+			// there is no dot suffix, it assumes a size of 2.
+			switch ((int)*tok)
 			{
 			case DOTL:
 				eval += 2;
 			case DOTB:
 			case DOTW:
-				++tok;
+				tok++;
 			}
 
 			eval += 2;
 		}
-		else 
+		else if (*tok >= KW_D0 && *tok <= KW_A7)
+		{
+			if (reglist(&rlist) < 0)
+				return 0;
+
+//			for(i=0; i++<16; rlist>>=1)
+			for(i=0; i<16; i++, rlist>>=1)
+			{
+				if (rlist & 1)
+					eval += 4;
+			}
+		}
+		else
+		{
+			switch ((int)*tok)
+			{
+			case KW_USP:
+			case KW_SSP:
+			case KW_PC:
+				eval += 2;
+				// FALLTHROUGH
+			case KW_SR:
+			case KW_CCR:
+				eval += 2;
+				tok++;
+				break;
+			case EOL:
+				return 0;
+			default:
+				return error(".cargs syntax");
+			}
+		}
+
+		// Eat commas in between each argument, if they exist
+		if (*tok == ',')
+			tok++;
+	}
+}
+
+
+//
+// .cstruct [#offset], symbol[.size], ...
+// 
+// Lists of registers may also be mentioned; they just take up space. Good for
+// "documentation" purposes:
+// 
+// .cstruct a6, .arg1, .arg2, .arg3...
+// 
+// Symbols thus created are ABS and EQUATED. Note that this is for
+// compatibility with VBCC and the Remover's library. Thanks to GroovyBee for
+// the suggestion.
+//
+int d_cstruct(void)
+{
+	VALUE eval = 0;		// Default, if no offset specified, is zero
+	WORD rlist;
+	SYM * symbol;
+	char * symbolName;
+	int env;
+	int i;
+
+	if (rgpu || rdsp)
+		return error("directive forbidden in gpu/dsp mode");
+
+	if (*tok == '#')
+	{
+		tok++;
+
+		if (abs_expr(&eval) != OK)
+			return 0;
+
+		// Eat the comma, if it's there
+		if (*tok == ',')
+			tok++;
+	}
+
+	for(;;)
+	{
+		if (*tok == SYMBOL)
 		{
-			if (*tok >= KW_D0 && *tok <= KW_A7)
+			symbolName = string[tok[1]];
+
+			// Set env to either local (dot prefixed) or global scope
+			env = (symbolName[0] == '.' ? curenv : 0);
+			symbol = lookup(symbolName, LABEL, env);
+
+			// If the symbol wasn't found, then define it. Otherwise, throw an
+			// error.
+			if (symbol == NULL)
 			{
-				if (reglist(&rlist) < 0)
-					return 0;
+				symbol = NewSymbol(symbolName, LABEL, env);
+				symbol->sattr = 0;
+			}
+			else if (symbol->sattr & DEFINED)
+				return errors("multiply-defined label '%s'", symbolName);
+
+			// Put symbol in "order of definition" list
+			if (!(symbol->sattr & SDECLLIST))
+				sym_decl(symbol);
 
-				for(i=0; i++<16; rlist>>=1)
-					if (rlist & 1)
-						eval += 4;
+			tok += 2;
+
+			// Adjust label start address if it's a word or a long, as a byte
+			// label might have left us on an odd address.
+			switch ((int)*tok)
+			{
+			case DOTW:
+			case DOTL:
+				eval += eval & 0x01;
 			}
-			else
+
+			symbol->sattr |= (ABS | DEFINED | EQUATED);
+			symbol->svalue = eval;
+
+			// Check for dot suffixes and adjust space accordingly (longs and
+			// words on an odd boundary get bumped to the next word aligned
+			// address). If no suffix, then throw an error.
+			switch ((int)*tok)
 			{
-				switch((int)*tok)
-				{
-				case KW_USP:
-				case KW_SSP:
-				case KW_PC:
-					eval += 2;
-					// FALLTHROUGH
-				case KW_SR:
-				case KW_CCR:
-					eval += 2;
-					++tok;
-					break;
-				case EOL:
-					return 0;
-				default:
-					return error(".cargs syntax");
-				}
+			case DOTL:
+				eval += 4;
+				break;
+			case DOTW:
+				eval += 2;
+				break;
+			case DOTB:
+				eval += 1;
+				break;
+			default:
+				return error("Symbol missing dot suffix in .cstruct construct");
 			}
 
-			if (*tok == ',')
-				++tok;
+			tok++;
+		}
+		else if (*tok >= KW_D0 && *tok <= KW_A7)
+		{
+			if (reglist(&rlist) < 0)
+				return 0;
+
+			for(i=0; i<16; i++, rlist>>=1)
+			{
+				if (rlist & 1)
+					eval += 4;
+			}
+		}
+		else
+		{
+			switch ((int)*tok)
+			{
+			case KW_USP:
+			case KW_SSP:
+			case KW_PC:
+				eval += 2;
+				// FALLTHROUGH
+			case KW_SR:
+			case KW_CCR:
+				eval += 2;
+				tok++;
+				break;
+			case EOL:
+				return 0;
+			default:
+				return error(".cstruct syntax");
+			}
 		}
+
+		// Eat commas in between each argument, if they exist
+		if (*tok == ',')
+			tok++;
 	}
 }
 
@@ -1413,11 +1545,12 @@ int d_cargs(void)
 //
 int undmac1(char * p)
 {
-	SYM * sy;
+	SYM * symbol = lookup(p, MACRO, 0);
 
-	// If the macro symbol exists, cause it to dissappear
-	if ((sy = lookup(p, MACRO, 0)) != NULL)
-		sy->stype = (BYTE)SY_UNDEF;
+	// If the macro symbol exists, cause it to disappear
+//	if ((sy = lookup(p, MACRO, 0)) != NULL)
+	if (symbol != NULL)
+		symbol->stype = (BYTE)SY_UNDEF;
 
 	return OK;
 }
@@ -1428,3 +1561,18 @@ int d_undmac(void)
 	symlist(undmac1);
 	return 0;
 }
+
+
+int d_jpad(void)
+{
+	warn("JPAD directive is deprecated/non-functional");
+	return OK;
+}
+
+
+int d_nojpad(void)
+{
+	warn("NOJPAD directive is deprecated/non-functional");
+	return OK;
+}
+