//
-// RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
+// RMAC - Reboot's Macro Assembler for all Atari computers
// DIRECT.C - Directive Handling
-// Copyright (C) 199x Landon Dyer, 2011 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
+// Source utilised with the kind permission of Landon Dyer
//
#include "direct.h"
-#include "sect.h"
-#include "risca.h"
+#include "6502.h"
+#include "amode.h"
#include "error.h"
-#include "token.h"
-#include "procln.h"
#include "expr.h"
-#include "mach.h"
#include "listing.h"
+#include "mach.h"
+#include "macro.h"
#include "mark.h"
+#include "procln.h"
+#include "riscasm.h"
+#include "sect.h"
#include "symbol.h"
+#include "token.h"
+#include "math.h"
+#include "sect.h"
#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
+char buffer[256]; // Scratch buffer for messages
+int largestAlign[3] = { 2, 2, 2 }; // Largest alignment value seen per section
+
+// Function prototypes
+int d_unimpl(void);
+int d_68000(void);
+int d_68000(void);
+int d_68020(void);
+int d_68030(void);
+int d_68040(void);
+int d_68060(void);
+int d_68881(void);
+int d_68882(void);
+int d_56001(void);
+int d_nofpu(void);
+int d_bss(void);
+int d_data(void);
+int d_text(void);
+int d_abs(void);
+int d_comm(void);
+int d_dc(WORD);
+int d_ds(WORD);
+int d_dcb(WORD);
+int d_globl(void);
+int d_gpu(void);
+int d_dsp(void);
+int d_assert(void);
+int d_include(void);
+int d_list(void);
+int d_nlist(void);
+int d_error(char *);
+int d_warn(char *);
+int d_org(void);
+int d_init(WORD);
+int d_cargs(void);
+int d_undmac(void);
+int d_regbank0(void);
+int d_regbank1(void);
+int d_incbin(void);
+int d_noclear(void);
+int d_equrundef(void);
+int d_ccundef(void);
+int d_print(void);
+int d_gpumain(void);
+int d_jpad(void);
+int d_nojpad(void);
+int d_fail(void);
+int d_cstruct(void);
+int d_prgflags(void);
+int d_opt(void);
+int d_dsp(void);
+void SetLargestAlignment(int);
// 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_6502, // 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
+ (void *)d_init, // 9 init
+ d_cargs, // 10 cargs
+ (void *)d_goto, // 11 goto
+ (void *)d_dc, // 12 dc
+ (void *)d_ds, // 13 ds
+ d_undmac, // 14 undefmac
+ d_gpu, // 15 .gpu
+ d_dsp, // 16 .dsp
+ (void *)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_error, // 47 error
+ d_warn, // 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)
+ d_gpumain, // 56 .gpumain (deprecated)
+ d_prgflags, // 57 .prgflags
+ d_68020, // 58 .68020
+ d_68030, // 59 .68030
+ d_68040, // 60 .68040
+ d_68060, // 61 .68060
+ d_68881, // 62 .68881
+ d_68882, // 63 .68882
+ d_56001, // 64 .56001
+ d_nofpu, // 65 nofpu
+ d_opt, // 58 .opt
};
+
+//
+// Set the largest alignment seen in the current section
+//
+void SetLargestAlignment(int size)
+{
+ if ((scattr & TEXT) && (largestAlign[0] < size))
+ largestAlign[0] = size;
+ else if ((scattr & DATA) && (largestAlign[1] < size))
+ largestAlign[1] = size;
+ else if ((scattr & BSS) && (largestAlign[2] < size))
+ largestAlign[2] = size;
+}
+
+
//
-// --- .org - Set origin ---------------------------------------------------------------------------
+// .error - Abort compilation, printing an error message
+//
+int d_error(char *str)
+{
+ if (*tok == EOL)
+ return error("error directive encountered - aborting assembling");
+ else
+ {
+ switch(*tok)
+ {
+ case STRING:
+ return error(string[tok[1]]);
+ break;
+ default:
+ return error("error directive encountered--aborting assembly");
+ }
+ }
+}
+
+
//
+// .warn - Just display a warning on screen
+//
+int d_warn(char *str)
+{
+ if (*tok == EOL)
+ return warn("WARNING WARNING WARNING");
+ else
+ {
+ switch(*tok)
+ {
+ case STRING:
+ return warn(string[tok[1]]);
+ break;
+ default:
+ return warn("WARNING WARNING WARNING");
+ }
+ }
+}
+
-int d_fail(void) {
- fatal("user abort");
- return(0);
+//
+// .org - Set origin
+//
+int d_org(void)
+{
+ uint64_t address;
+
+ if (!rgpu && !rdsp && !m6502)
+ return error(".org permitted only in gpu/dsp and 6502 sections");
+
+ if (abs_expr(&address) == ERROR)
+ {
+ error("cannot determine org'd address");
+ return ERROR;
+ }
+
+ if (rgpu | rdsp)
+ {
+ orgaddr = address;
+ orgactive = 1;
+ }
+ else
+ {
+ // 6502. We also kludge `lsloc' so the listing generator doesn't try
+ // to spew out megabytes.
+ if (address > 0xFFFF)
+ return error(range_error);
+
+ if (sloc != currentorg[0])
+ {
+ currentorg[1] = sloc;
+ currentorg += 2;
+ }
+
+ currentorg[0] = address;
+ ch_size = 0;
+ lsloc = sloc = address;
+ chptr = scode->chptr + address;
+ orgaddr = address;
+ orgactive = 1;
+ at_eol();
+ }
+
+ return 0;
+}
+
+
+//
+// Print directive
+//
+int d_print(void)
+{
+ char prntstr[LNSIZ]; // String for PRINT directive
+ char format[LNSIZ]; // Format for PRINT directive
+ int formatting = 0; // Formatting on/off
+ int wordlong = 0; // WORD = 0, LONG = 1
+ int outtype = 0; // 0:hex, 1:decimal, 2:unsigned
+
+ uint64_t eval; // Expression value
+ WORD eattr; // Expression attributes
+ SYM * esym; // External symbol involved in expr.
+ TOKEN r_expr[EXPRSIZE];
+
+ while (*tok != EOL)
+ {
+ switch(*tok)
+ {
+ case STRING:
+ sprintf(prntstr, "%s", string[tok[1]]);
+ printf("%s", prntstr);
+
+ if (list_fd)
+ unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
+
+ tok += 2;
+ break;
+ case '/':
+ formatting = 1;
+
+ if (tok[1] != SYMBOL)
+ goto token_err;
+
+// strcpy(prntstr, (char *)tok[2]);
+ strcpy(prntstr, string[tok[2]]);
+
+ switch(prntstr[0])
+ {
+ case 'l': case 'L': wordlong = 1; break;
+ case 'w': case 'W': wordlong = 0; break;
+ case 'x': case 'X': outtype = 0; break;
+ case 'd': case 'D': outtype = 1; break;
+ case 'u': case 'U': outtype = 2; break;
+ default:
+ error("unknown print format flag");
+ return ERROR;
+ }
+
+ tok += 3;
+ break;
+ case ',':
+ tok++;
+ break;
+ default:
+ if (expr(r_expr, &eval, &eattr, &esym) != OK)
+ goto token_err;
+ else
+ {
+ switch(outtype)
+ {
+ case 0: strcpy(format, "%X"); break;
+ case 1: strcpy(format, "%d" ); break;
+ case 2: strcpy(format, "%u" ); break;
+ }
+
+ if (wordlong)
+ sprintf(prntstr, format, eval);
+ else
+ sprintf(prntstr, format, eval & 0xFFFF);
+
+ printf("%s", prntstr);
+
+ if (list_fd)
+ unused = write(list_fd, prntstr, (LONG)strlen(prntstr));
+
+ formatting = 0;
+ wordlong = 0;
+ outtype = 0;
+ }
+
+ break;
+ }
+ }
+
+ printf("\n");
+
+ return 0;
+
+token_err:
+ error("illegal print token");
+ return ERROR;
}
-
+
+
//
-// --- .org - Set origin ---------------------------------------------------------------------------
+// Undefine an equated condition code
//
+int d_ccundef(void)
+{
+ SYM * ccname;
-int d_org(void) {
- VALUE address;
+ // Check that we are in a RISC section
+ if (!rgpu && !rdsp)
+ {
+ error(".ccundef must be defined in .gpu/.dsp section");
+ return ERROR;
+ }
- if(!rgpu && !rdsp)
- return(error(".org permitted only in gpu/dsp section"));
+ if (*tok != SYMBOL)
+ {
+ error("syntax error; expected symbol");
+ return ERROR;
+ }
- orgaddr = 0;
+ ccname = lookup(string[tok[1]], LABEL, 0);
- if(abs_expr(&address) == ERROR) {
- error("cannot determine org'd address");
- return(ERROR);
- }
+ // Make sure symbol is a valid ccdef
+ if (!ccname || !(ccname->sattre & EQUATEDCC))
+ {
+ error("invalid equated condition name specified");
+ return ERROR;
+ }
- orgaddr = address;
- orgactive = 1;
+ ccname->sattre |= UNDEF_CC;
- return(0);
+ return 0;
}
+
//
-// --- NOP Padding Directive -----------------------------------------------------------------------
+// Undefine an equated register
//
+int d_equrundef(void)
+{
+ SYM * regname;
-int d_jpad(void) {
- jpad = 1;
- return(0);
-}
+ // Check that we are in a RISC section
+ if (!rgpu && !rdsp)
+ return error(".equrundef/.regundef must be defined in .gpu/.dsp section");
+
+ while (*tok != EOL)
+ {
+ // Skip preceeding or seperating commas (if any)
+ if (*tok == ',')
+ tok++;
+
+ // Check we are dealing with a symbol
+ if (*tok != SYMBOL)
+ return error("syntax error; expected symbol");
+
+ // Lookup and undef if equated register
+ regname = lookup(string[tok[1]], LABEL, 0);
+
+ if (regname && (regname->sattre & EQUATEDREG))
+ {
+ // Reset the attributes of this symbol...
+ regname->sattr = 0;
+ regname->sattre &= ~(EQUATEDREG | BANK_0 | BANK_1);
+ regname->sattre |= UNDEF_EQUR;
+ }
-int d_nojpad(void) {
- jpad = 0;
- return(0);
+ // Skip over symbol token and address
+ tok += 2;
+ }
+
+ return 0;
}
+
+//
+// Do not allow use of the CLR.L opcode
//
-// --- Print Directive -----------------------------------------------------------------------------
-//
-
-int d_print(void) {
- char prntstr[LNSIZ]; // String for PRINT directive
- char format[LNSIZ]; // Format for PRINT directive
- int formatting = 0; // Formatting on/off
- int wordlong = 0; // WORD = 0, LONG = 1
- int outtype = 0; // 0:hex, 1:decimal, 2:unsigned
-
- VALUE eval; // Expression value
- WORD eattr; // Expression attributes
- SYM *esym; // External symbol involved in expr.
- TOKEN r_expr[EXPRSIZE];
-
- while(*tok != EOL) {
- switch(*tok) {
- case STRING:
- sprintf(prntstr, "%s", (char*)tok[1]);
- printf("%s", prntstr);
- if(list_fd)
- write(list_fd, prntstr, (LONG)strlen(prntstr));
- tok+=2;
- break;
- case '/':
- formatting = 1;
- if(tok[1] != SYMBOL) goto token_err;
- strcpy(prntstr, (char*)tok[2]);
- switch(prntstr[0]) {
- case 'l': case 'L': wordlong = 1; break;
- case 'w': case 'W': wordlong = 0; break;
- case 'x': case 'X': outtype = 0; break;
- case 'd': case 'D': outtype = 1; break;
- case 'u': case 'U': outtype = 2; break;
- default:
- error("unknown print format flag");
- return(ERROR);
- }
- tok += 3;
- break;
- case ',':
- tok++;
- break;
- default:
- if(expr(r_expr, &eval, &eattr, &esym) != OK)
- goto token_err;
- else {
- switch(outtype) {
- case 0: strcpy(format, "%X"); break;
- case 1: strcpy(format, "%d" ); break;
- case 2: strcpy(format, "%u" ); break;
- }
- if(wordlong) sprintf(prntstr, format, eval);
- else sprintf(prntstr, format, eval & 0xFFFF);
- printf("%s", prntstr);
- if(list_fd)
- write(list_fd, prntstr, (LONG)strlen(prntstr));
- formatting = 0;
- wordlong = 0;
- outtype = 0;
- }
- break;
- }
- }
-
- printf("\n");
- println("\n");
-
- return(0);
-
- token_err:
- error("illegal print token");
- return(ERROR);
+int d_noclear(void)
+{
+ warn("CLR.L opcode ignored...");
+ return 0;
}
+
//
-// --- Undefine an Equated Condition Code ----------------------------------------------------------
+// Include binary file
//
+int d_incbin(void)
+{
+ int fd;
+ int bytes = 0;
+ long pos, size, bytesRead;
+ char buf1[256];
+ int i;
-int d_ccundef(void) {
- SYM *ccname;
+ // Check to see if we're in BSS, and, if so, throw an error
+ if (scattr & SBSS)
+ {
+ error("cannot include binary file \"%s\" in BSS section", string[tok[1]]);
+ return ERROR;
+ }
- if(!rgpu && !rdsp) { // Check that we are in a RISC section
- error(".ccundef must be defined in .gpu/.dsp section");
- return(ERROR);
- }
- if(*tok != SYMBOL) {
- error(syntax_error);
- return(ERROR);
- }
- ccname = lookup((char *)tok[1], LABEL, 0);
- if(!ccname || !(ccname->sattre & EQUATEDCC)) { // Make sure symbol is a valid ccdef
- error("invalid equated condition name specified");
- return(ERROR);
- }
+ if (*tok != STRING)
+ {
+ error("syntax error; string missing");
+ return ERROR;
+ }
- ccname->sattre |= UNDEF_CC;
+ // 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 ((fd = open(string[tok[1]], _OPEN_INC)) < 0)
+ {
+ for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
+ {
+ fd = strlen(buf1);
- return(0);
-}
+ // Append path char if necessary
+ if (fd > 0 && buf1[fd - 1] != SLASHCHAR)
+ strcat(buf1, SLASHSTRING);
-//
-// --- Undefine an Equated Register ----------------------------------------------------------------
-//
+ strcat(buf1, string[tok[1]]);
+
+ if ((fd = open(buf1, _OPEN_INC)) >= 0)
+ goto allright;
+ }
+
+ return error("cannot open: \"%s\"", string[tok[1]]);
+ }
+
+allright:
-int d_equrundef(void) {
- SYM *regname;
+ size = lseek(fd, 0L, SEEK_END);
+ pos = lseek(fd, 0L, SEEK_SET);
+ chcheck(size);
- if(!rgpu && !rdsp) { // Check that we are in a RISC section
- error(".equrundef/.regundef must be defined in .gpu/.dsp section");
- return(ERROR);
- }
+ DEBUG { printf("INCBIN: File '%s' is %li bytes.\n", string[tok[1]], size); }
- while(*tok != EOL) {
- if(*tok == ',') tok++; // Skip preceeding or seperating commas
+ char * fileBuffer = (char *)malloc(size);
+ bytesRead = read(fd, fileBuffer, size);
- if(*tok != SYMBOL) { // Check we are dealing with a symbol
- error(syntax_error);
- return(ERROR);
- }
+ if (bytesRead != size)
+ {
+ error("was only able to read %li bytes from binary file (%s, %li bytes)", bytesRead, string[tok[1]], size);
+ return ERROR;
+ }
- regname = lookup((char *)tok[1], LABEL, 0); // Lookup and undef if equated register
- if(regname && (regname->sattre & EQUATEDREG))
- regname->sattre |= UNDEF_EQUR;
+ memcpy(chptr, fileBuffer, size);
+ chptr += size;
+ sloc += size;
+ ch_size += size;
- tok += 2; // Skip over symbol token and address
- }
+ if (orgactive)
+ orgaddr += size;
- return(0);
+ free(fileBuffer);
+ close(fd);
+ return 0;
}
+
//
-// --- Do Not Allow the Use of the CLR.L Opcode ----------------------------------------------------
+// Set RISC register banks
//
-
-int d_noclear(void) {
- return(0);
+int d_regbank0(void)
+{
+ // Set active register bank zero
+ regbank = BANK_0;
+ return 0;
}
-//
-// --- Include Binary File -------------------------------------------------------------------------
-//
-
-int d_incbin(void) {
- int i, j;
- int bytes = 0;
- long pos, size;
- char buf;
-
- if(*tok != STRING) {
- error(syntax_error);
- return(ERROR);
- }
-
- if((j = open((char *)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);
- }
-
- } else {
- errors("cannot open include binary file (%s)", (char*)tok[1]);
- return(ERROR);
- }
-
- close(j);
- return(0);
-}
-
-//
-// --- Set RISC Register Banks ---------------------------------------------------------------------
-//
-int d_regbank0(void) {
- regbank = BANK_0; // Set active register bank zero
- return(0);
+int d_regbank1(void)
+{
+ // Set active register bank one
+ regbank = BANK_1;
+ return 0;
}
-int d_regbank1(void) {
- regbank = BANK_1; // Set active register bank one
- return(0);
-}
//
-// --- Adjust Location to an EVEN Value ------------------------------------------------------------
+// Helper function, to cut down on mistakes & typing
//
-
-int d_even(void) {
- if(sloc & 1) {
- if((scattr & SBSS) == 0) {
- chcheck(1);
- D_byte(0);
- } else {
- ++sloc;
- }
- }
+static inline void SkipBytes(unsigned bytesToSkip)
+{
+ if (!bytesToSkip)
+ return;
+
+ if ((scattr & SBSS) == 0)
+ {
+ chcheck(bytesToSkip);
+ D_ZEROFILL(bytesToSkip);
+ }
+ else
+ {
+ sloc += bytesToSkip;
- return(0);
+ if (orgactive)
+ orgaddr += bytesToSkip;
+ }
}
+
//
-// --- Adjust Location to an LONG Value ------------------------------------------------------------
+// Adjust location to an EVEN value
//
+int d_even(void)
+{
+ if (m6502)
+ return error(in_6502mode);
+
+ unsigned skip = (rgpu || rdsp ? orgaddr : sloc) & 0x01;
-int d_long(void) {
- unsigned i;
- unsigned val = 4;
-
- i = sloc & ~(val - 1);
- if(i != sloc) val = val - (sloc - i);
- else val = 0;
+ if (skip)
+ {
+ if ((scattr & SBSS) == 0)
+ {
+ chcheck(1);
+ D_byte(0);
+ }
+ else
+ {
+ sloc++;
- if(val) {
- if((scattr & SBSS) == 0) {
- chcheck(val);
- for(i = 0; i < val; i++)
- D_byte(0);
- } else {
- sloc += val;
- }
- }
+ if (orgactive)
+ orgaddr++;
+ }
+ }
- return(0);
+ return 0;
}
+
//
-// --- Adjust Location to an PHRASE Value ----------------------------------------------------------
+// Adjust location to a LONG value
//
+int d_long(void)
+{
+ unsigned lower2Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x03;
+ unsigned bytesToSkip = (0x04 - lower2Bits) & 0x03;
+ SkipBytes(bytesToSkip);
+ SetLargestAlignment(4);
-int d_phrase(void) {
- unsigned i;
- unsigned val = 8;
-
- i = sloc & ~(val - 1);
- if(i != sloc) val = val - (sloc - i);
- else val = 0;
-
- if(val) {
- if((scattr & SBSS) == 0) {
- chcheck(val);
- for(i = 0; i < val; i++)
- D_byte(0);
- } else {
- sloc += val;
- }
- }
-
- return(0);
+ return 0;
}
+
+//
+// Adjust location to a PHRASE value
//
-// --- Adjust Location to an DPHRASE Value ---------------------------------------------------------
+// N.B.: We have to handle the GPU/DSP cases separately because you can embed
+// RISC code in the middle of a regular 68K section. Also note that all
+// of the alignment pseudo-ops will have to be fixed this way.
//
+// This *must* behave differently when in a RISC section, as following sloc
+// (instead of orgaddr) will fuck things up royally. Note that we do it this
+// way because you can embed RISC code in a 68K section, and have the origin
+// pointing to a different alignment in the RISC section than the 68K section.
+//
+int d_phrase(void)
+{
+ unsigned lower3Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x07;
+ unsigned bytesToSkip = (0x08 - lower3Bits) & 0x07;
+ SkipBytes(bytesToSkip);
+ SetLargestAlignment(8);
-int d_dphrase(void) {
- unsigned i;
- unsigned val = 16;
-
- i = sloc & ~(val - 1);
- if(i != sloc) val = val - (sloc - i);
- else val = 0;
+ return 0;
+}
- if(val) {
- if((scattr & SBSS) == 0) {
- chcheck(val);
- for(i = 0; i < val; i++)
- D_byte(0);
- } else {
- sloc += val;
- }
- }
- return(0);
+//
+// Adjust location to a DPHRASE value
+//
+int d_dphrase(void)
+{
+ unsigned lower4Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x0F;
+ unsigned bytesToSkip = (0x10 - lower4Bits) & 0x0F;
+ SkipBytes(bytesToSkip);
+ SetLargestAlignment(16);
+
+ return 0;
}
+
//
-// --- Adjust Location to an QPHRASE Value ---------------------------------------------------------
+// Adjust location to a QPHRASE value
//
+int d_qphrase(void)
+{
+ unsigned lower5Bits = (rgpu || rdsp ? orgaddr : sloc) & 0x1F;
+ unsigned bytesToSkip = (0x20 - lower5Bits) & 0x1F;
+ SkipBytes(bytesToSkip);
+ SetLargestAlignment(32);
-int d_qphrase(void) {
- unsigned i;
- unsigned val = 32;
-
- i = sloc & ~(val - 1);
- if(i != sloc) val = val - (sloc - i);
- else val = 0;
+ return 0;
+}
- if(val) {
- if((scattr & SBSS) == 0) {
- savsect();
- chcheck(val);
- for(i = 0; i < val; i++)
- D_byte(0);
- } else {
- sloc += val;
- }
- }
- return(0);
+//
+// Do auto-even. This must be called ONLY if 'sloc' is odd.
+//
+// This is made hairy because, if there was a label on the line, we also have
+// to adjust its value. This won't work with more than one label on the line,
+// which is OK since multiple labels are only allowed in AS68 kludge mode, and
+// the C compiler is VERY paranoid and uses ".even" whenever it can
+//
+// N.B.: This probably needs the same fixes as above...
+//
+void auto_even(void)
+{
+ if (cursect != M6502)
+ {
+ if (scattr & SBSS)
+ sloc++; // Bump BSS section
+ else
+ D_byte(0); // Deposit 0.b in non-BSS
+
+ if (lab_sym != NULL) // Bump label if we have to
+ lab_sym->svalue++;
+ }
}
+
//
-// -------------------------------------------------------------------------------------------------
-// Do auto-even. This must be called ONLY if 'sloc' is odd.
+// Unimplemened directive error
+//
+int d_unimpl(void)
+{
+ return error("unimplemented directive");
+}
+
+
//
-// This is made hairy because, if there was a label on the line, we also have to adjust its value.
-// This won't work with more than one label on the line, which is OK since multiple labels are only
-// allowed in AS68 kludge mode, and the C compiler is VERY paranoid and uses ".even" whenever it can
-// -------------------------------------------------------------------------------------------------
+// Return absolute (not TDB) and defined expression or return an error
//
+int abs_expr(uint64_t * a_eval)
+{
+ WORD eattr;
-void auto_even(void) {
- if(scattr & SBSS)
- ++sloc; // Bump BSS section
- else {
- D_byte(0) // Deposit 0.b in non-BSS
- }
+ if (expr(exprbuf, a_eval, &eattr, NULL) < 0)
+ return ERROR;
- if(lab_sym != NULL) // Bump label if we have to
- ++lab_sym->svalue;
+ if (!(eattr & DEFINED))
+ return error(undef_error);
+
+ if (eattr & TDB)
+ return error(rel_error);
+
+ return OK;
}
+
//
-// --- Unimplemened Directive Error ----------------------------------------------------------------
+// Hand symbols in a symbol-list to a function (kind of like mapcar...)
//
+int symlist(int(* func)())
+{
+ const char * em = "symbol list syntax";
+
+ for(;;)
+ {
+ if (*tok != SYMBOL)
+ return error(em);
+
+ if ((*func)(string[tok[1]]) != OK)
+ break;
+
+ tok += 2;
-int d_unimpl(void) {
- return(error("unimplemented directive"));
+ if (*tok == EOL)
+ break;
+
+ if (*tok != ',')
+ return error(em);
+
+ tok++;
+ }
+
+ return 0;
}
-//
-// --- Return absolute (not TDB) and defined expression or return an error -------------------------
+
//
+// .include "filename"
+//
+int d_include(void)
+{
+ int j;
+ int i;
+ char * fn;
+ char buf[128];
+ char buf1[128];
+
+ if (*tok == STRING) // Leave strings ALONE
+ fn = string[*++tok];
+ else if (*tok == SYMBOL) // Try to append ".s" to symbols
+ {
+ strcpy(buf, string[*++tok]);
+ fext(buf, ".s", 0);
+ fn = &buf[0];
+ }
+ else // Punt if no STRING or SYMBOL
+ return error("missing filename");
+
+ // Make sure the user didn't try anything like:
+ // .include equates.s
+ 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 "-i" option.
+ if ((j = open(fn, 0)) < 0)
+ {
+ for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
+ {
+ j = strlen(buf1);
+
+ // Append path char if necessary
+ if (j > 0 && buf1[j - 1] != SLASHCHAR)
+ strcat(buf1, SLASHSTRING);
+
+ strcat(buf1, fn);
+
+ if ((j = open(buf1, 0)) >= 0)
+ goto allright;
+ }
+
+ return error("cannot open: \"%s\"", fn);
+ }
+
+allright:
+ include(j, fn);
+ return 0;
+}
-int abs_expr(VALUE *a_eval) {
- WORD eattr;
- if(expr(exprbuf, a_eval, &eattr, NULL) < 0)
- return(ERROR);
- if(!(eattr & DEFINED))
- return(error(undef_error));
- if(eattr & TDB)
- return(error(rel_error));
+//
+// .assert expression [, expression...]
+//
+int d_assert(void)
+{
+ WORD eattr;
+ uint64_t eval;
- return(OK);
+ for(; expr(exprbuf, &eval, &eattr, NULL)==OK; ++tok)
+ {
+ if (!(eattr & DEFINED))
+ return error("forward or undefined .assert");
+
+ if (!eval)
+ return error("assert failure");
+
+ if (*tok != ',')
+ break;
+ }
+
+ at_eol();
+ return 0;
}
+
//
-// --- Hand symbols in a symbol-list to a function (kind of like mapcar...) ------------------------
+// .globl symbol [, symbol] <<<cannot make local symbols global>>>
//
+int globl1(char * p)
+{
+ SYM * sy;
+
+ if (*p == '.')
+ return error("cannot .globl local symbol");
+
+ if ((sy = lookup(p, LABEL, 0)) == NULL)
+ {
+ sy = NewSymbol(p, LABEL, 0);
+ sy->svalue = 0;
+ sy->sattr = GLOBAL;
+//printf("glob1: Making global symbol: attr=%04X, eattr=%08X, %s\n", sy->sattr, sy->sattre, sy->sname);
+ }
+ else
+ sy->sattr |= GLOBAL;
+
+ return OK;
+}
-int symlist(int(*func)()) {
- char *em = "symbol list syntax";
- for(;;) {
- if(*tok != SYMBOL) return(error(em));
- if((*func)(tok[1]) != OK) break;
- tok += 2;
- if(*tok == EOL) break;
- if(*tok != ',') return(error(em));
- ++tok;
- }
+int d_globl(void)
+{
+ if (m6502)
+ return error(in_6502mode);
- return(0);
+ symlist(globl1);
+ return 0;
}
+
+//
+// .prgflags expression
//
-// --- .include "filename" -------------------------------------------------------------------------
-//
-
-int d_include(void) {
- int j;
- int i;
- char *fn;
- char buf[128];
- char buf1[128];
-
- if(*tok == STRING) // Leave strings ALONE
- fn = (char *)*++tok;
- else if(*tok == SYMBOL) { // Try to append ".s" to symbols
- strcpy(buf, (char *)*++tok);
- fext(buf, ".s", 0);
- fn = &buf[0];
- } else // Punt if no STRING or SYMBOL
- return(error("missing filename"));
-
- // Make sure the user didn't try anything like:
- // .include equates.s
- 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.
- if((j = open(fn, 0)) < 0) {
- for(i = 0; nthpath("RMACPATH", i, buf1) != 0; ++i) {
- j = strlen(buf1);
- if(j > 0 && buf1[j-1] != SLASHCHAR) // Append path char if necessary
- strcat(buf1, SLASHSTRING);
- strcat(buf1, fn);
- if((j = open(buf1, 0)) >= 0)
- goto allright;
- }
-
- return(errors("cannot open: \"%s\"", fn));
- }
-
- allright:
-
- include(j, fn);
- return(0);
+int d_prgflags(void)
+{
+ uint64_t eval;
+
+ if (*tok == EOL)
+ return error("PRGFLAGS requires value");
+ else if (abs_expr(&eval) == OK)
+ {
+ PRGFLAGS = (uint32_t)eval;
+ return 0;
+ }
+ else
+ {
+ return error("PRGFLAGS requires value");
+ }
}
+
//
-// --- .assert expression [, expression...] --------------------------------------------------------
+// .abs [expression]
//
+int d_abs(void)
+{
+ uint64_t eval;
+
+ if (m6502)
+ return error(in_6502mode);
-int d_assert(void) {
- WORD eattr;
- VALUE eval;
+ SaveSection();
- for(; expr(exprbuf, &eval, &eattr, NULL) == OK; ++tok) {
- if(!(eattr & DEFINED))
- return(error("forward or undefined .assert"));
- if(!eval)
- return(error("assert failure"));
- if(*tok != ',')
- break;
- }
- at_eol();
- return(0);
+ if (*tok == EOL)
+ eval = 0;
+ else if (abs_expr(&eval) != OK)
+ return 0;
+
+ SwitchSection(ABS);
+ sloc = (uint32_t)eval;
+ return 0;
}
+
//
-// --- .globl symbol [, symbol] <<<cannot make local symbols global>>> -----------------------------
+// Switch segments
//
+int d_text(void)
+{
+ if (rgpu || rdsp)
+ return error("directive forbidden in gpu/dsp mode");
+ else if (m6502)
+ return error(in_6502mode);
+
+ if (cursect != TEXT)
+ {
+ SaveSection();
+ SwitchSection(TEXT);
+ }
+
+ return 0;
+}
+
-int globl1(char *p) {
- SYM *sy;
+int d_data(void)
+{
+ if (rgpu || rdsp)
+ return error("directive forbidden in gpu/dsp mode");
+ else if (m6502)
+ return error(in_6502mode);
- if(*p == '.')
- return(error("cannot .globl local symbol"));
- if((sy = lookup(p, LABEL, 0)) == NULL) {
- sy = newsym(p, LABEL, 0);
- sy->svalue = 0;
- sy->sattr = GLOBAL;
- } else
- sy->sattr |= GLOBAL;
+ if (cursect != DATA)
+ {
+ SaveSection();
+ SwitchSection(DATA);
+ }
- return(OK);
+ return 0;
}
-int d_globl(void) {
- symlist(globl1);
- return(0);
+
+int d_bss(void)
+{
+ if (rgpu || rdsp)
+ return error("directive forbidden in gpu/dsp mode");
+ else if (m6502)
+ return error(in_6502mode);
+
+ if (cursect != BSS)
+ {
+ SaveSection();
+ SwitchSection(BSS);
+ }
+
+ return 0;
}
+
//
-// --- .abs [expression] ---------------------------------------------------------------------------
+// .ds[.size] expression
//
+int d_ds(WORD siz)
+{
+ DEBUG { printf("Directive: .ds.[size] = %u, sloc = $%X\n", siz, sloc); }
+
+ uint64_t eval;
+
+ if (cursect != M6502)
+ {
+ if ((siz != SIZB) && (sloc & 1)) // Automatic .even
+ auto_even();
+ }
+
+ if (abs_expr(&eval) != OK)
+ return 0;
-int d_abs(void) {
- VALUE eval;
+ // Check to see if the value being passed in is negative (who the hell does
+ // that?--nobody does; it's the code gremlins, or rum, that does it)
+ // N.B.: Since 'eval' is of type uint32_t, if it goes negative, it will have
+ // its high bit set.
+ if (eval & 0x80000000)
+ return error("negative sizes not allowed");
- savsect();
- if(*tok == EOL)
- eval = 0;
- else
- if(abs_expr(&eval) != OK)
- return(0);
+ // 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) || cursect == M6502)
+ {
+ listvalue((uint32_t)eval);
+ eval *= siz;
+ sloc += (uint32_t)eval;
- switchsect(ABS);
- sloc = eval;
- return(0);
+ if (cursect == M6502)
+ chptr += eval;
+
+ just_bss = 1; // No data deposited (8-bit CPU mode)
+ }
+ else
+ {
+ dep_block(eval, siz, 0, (WORD)(DEFINED | ABS), NULL);
+ }
+
+ at_eol();
+ return 0;
+}
+
+
+//
+// dc.b, dc.w / dc, dc.l, dc.i
+//
+int d_dc(WORD siz)
+{
+ WORD eattr;
+ uint64_t eval;
+ WORD tdb;
+ WORD defined;
+ uint64_t val64;
+ uint8_t * p;
+
+ if ((scattr & SBSS) != 0)
+ return error("illegal initialization of section");
+
+ // Do an auto_even if it's not BYTE sized (hmm, should we be doing this???)
+ if (cursect != M6502 && (siz != SIZB) && (sloc & 1))
+ auto_even();
+
+ // Check to see if we're trying to set LONGS on a non 32-bit aligned
+ // address in a GPU or DSP section, in their local RAM
+ if ((siz == SIZL) && (orgaddr & 0x03)
+ && ((rgpu && (orgaddr >= 0xF03000) && (orgaddr <= 0xF03FFFF))
+ || (rdsp && (orgaddr >= 0xF1B000) && (orgaddr <= 0xF1CFFFF))))
+ warn("depositing LONGs on a non-long address in local RAM");
+
+ for(;; tok++)
+ {
+ // dc.b 'string' [,] ...
+ if (siz == SIZB && (*tok == STRING || *tok == STRINGA8) && (tok[2] == ',' || tok[2] == EOL))
+ {
+ uint32_t i = strlen(string[tok[1]]);
+
+ if ((challoc - ch_size) < i)
+ chcheck(i);
+
+ if (*tok == STRING)
+ {
+ for(p=string[tok[1]]; *p!=EOS; p++)
+ D_byte(*p);
+ }
+ else if(*tok == STRINGA8)
+ {
+ for(p=string[tok[1]]; *p!=EOS; p++)
+ D_byte(strtoa8[*p]);
+ }
+ else
+ {
+ error("String format not supported... yet");
+ }
+
+ tok += 2;
+ goto comma;
+ }
+
+ int movei = 0; // MOVEI flag for dc.i
+
+ if (*tok == DOTI)
+ {
+ movei = 1;
+ tok++;
+ siz = SIZL;
+ }
+
+ if (siz != SIZQ)
+ {
+ // dc.x <expression>
+ SYM * esym = 0;
+
+ if (expr(exprbuf, &eval, &eattr, &esym) != OK)
+ return 0;
+ }
+ else
+ {
+ val64 = *(uint64_t *)(tok);
+ tok = tok + 2;
+ D_long((uint32_t)(val64 >> 32));
+ D_long((uint32_t)val64);
+
+ goto comma;
+ }
+
+ tdb = (WORD)(eattr & TDB);
+ defined = (WORD)(eattr & DEFINED);
+
+ if ((challoc - ch_size) < 4)
+ chcheck(4);
+
+ switch (siz)
+ {
+ case SIZB:
+ if (!defined)
+ {
+ AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
+ D_byte(0);
+ }
+ else
+ {
+ if (tdb)
+ return error("non-absolute byte value");
+
+ if (eval + 0x100 >= 0x200)
+ return error("%s (value = $%X)", range_error, eval);
+
+ D_byte(eval);
+ }
+
+ break;
+ case SIZW:
+ case SIZN:
+ if (!defined)
+ {
+ AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
+ D_word(0);
+ }
+ else
+ {
+ if (eval + 0x10000 >= 0x20000)
+ return error(range_error);
+
+ if (tdb)
+ MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
+
+ // Deposit 68000 or 6502 (byte-reversed) word
+ if (cursect != M6502)
+ D_word(eval)
+ else
+ D_rword(eval)
+ }
+
+ break;
+ case SIZL:
+ // Shamus: Why can't we do longs in 6502 mode?
+ if (m6502)
+ return error(in_6502mode);
+
+ if (!defined)
+ {
+ if (movei)
+ AddFixup(FU_LONG | FU_MOVEI, sloc, exprbuf);
+ else
+ AddFixup(FU_LONG, sloc, exprbuf);
+
+ D_long(0);
+ }
+ else
+ {
+ if (tdb)
+ MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
+
+ if (movei)
+ eval = WORDSWAP32(eval);
+
+ D_long(eval);
+ }
+ break;
+ case SIZS:
+ if (m6502)
+ return error(in_6502mode);
+
+ if (!defined)
+ {
+ float vv = 0;
+ AddFixup(FU_FLOATSING, sloc, exprbuf);
+
+ D_single(vv);
+ }
+ else
+ {
+ if (tdb)
+ MarkRelocatable(cursect, sloc, tdb, MSINGLE, NULL);
+
+ D_single(eval);
+ }
+ break;
+ case SIZD:
+ if (m6502)
+ return error(in_6502mode);
+
+ if (!defined)
+ {
+ double vv = 0;
+ AddFixup(FU_FLOATDOUB, sloc, exprbuf);
+
+ D_double(vv);
+ }
+ else
+ {
+ double vv;
+ if (tdb)
+ MarkRelocatable(cursect, sloc, tdb, MDOUBLE, NULL);
+
+ vv = *(double *)&eval;
+ D_double(vv);
+ }
+ break;
+ case SIZX:
+ if (m6502)
+ return error(in_6502mode);
+
+ if (!defined)
+ {
+ double vv = 0;
+ AddFixup(FU_FLOATEXT, sloc, exprbuf);
+
+ D_extend(vv);
+ }
+ else
+ {
+ float vv;
+ if (tdb)
+ MarkRelocatable(cursect, sloc, tdb, MEXTEND, NULL);
+
+ vv = *(double *)&eval;
+ D_extend(vv);
+ }
+ break;
+ }
+
+
+comma:
+ if (*tok != ',')
+ break;
+ }
+
+ at_eol();
+ return 0;
}
+
//
-// --- Switch Segments -----------------------------------------------------------------------------
+// dcb[.siz] expr1,expr2 - Make 'expr1' copies of 'expr2'
//
+int d_dcb(WORD siz)
+{
+ uint64_t evalc, eval;
+ WORD eattr;
+
+ DEBUG { printf("dcb: section is %s%s%s (scattr=$%X)\n", (cursect & TEXT ? "TEXT" : ""), (cursect & DATA ? " DATA" : ""), (cursect & BSS ? "BSS" : ""), scattr); }
+
+ if ((scattr & SBSS) != 0)
+ return error("illegal initialization of section");
+
+ if (abs_expr(&evalc) != OK)
+ return 0;
-int d_text(void) {
- if(rgpu || rdsp)
- return(error("directive forbidden in gpu/dsp mode"));
+ if (*tok++ != ',')
+ return error("missing comma");
- if(cursect != TEXT) {
- savsect();
- switchsect(TEXT);
- }
- return(0);
+ if (expr(exprbuf, &eval, &eattr, NULL) < 0)
+ return 0;
+
+ if (cursect != M6502 && (siz != SIZB) && (sloc & 1))
+ auto_even();
+
+ dep_block((uint32_t)evalc, siz, (uint32_t)eval, eattr, exprbuf);
+ return 0;
}
-int d_data(void) {
- if(rgpu || rdsp)
- return(error("directive forbidden in gpu/dsp mode"));
- if(cursect != DATA) {
- savsect();
- switchsect(DATA);
- }
- return(0);
+//
+// Generalized initialization directive
+//
+// .init[.siz] [#count,] expression [.size] , ...
+//
+// The size suffix on the ".init" directive becomes the default size of the
+// objects to deposit. If an item is preceeded with a sharp (immediate) sign
+// and an expression, it specifies a repeat count. The value to be deposited
+// may be followed by a size suffix, which overrides the default size.
+//
+int d_init(WORD def_siz)
+{
+ uint64_t count;
+ uint64_t eval;
+ WORD eattr;
+ WORD siz;
+
+ if ((scattr & SBSS) != 0)
+ return error(".init not permitted in BSS or ABS");
+
+ if (rgpu || rdsp)
+ return error("directive forbidden in gpu/dsp mode");
+
+ for(;;)
+ {
+ // Get repeat count (defaults to 1)
+ if (*tok == '#')
+ {
+ ++tok;
+
+ if (abs_expr(&count) != OK)
+ return 0;
+
+ if (*tok++ != ',')
+ return error(comma_error);
+ }
+ else
+ count = 1;
+
+ // Evaluate expression to deposit
+ if (expr(exprbuf, &eval, &eattr, NULL) < 0)
+ return 0;
+
+ switch ((int)*tok++)
+ { // Determine size of object to deposit
+ case DOTB: siz = SIZB; break;
+ case DOTW: siz = SIZB; break;
+ case DOTL: siz = SIZL; break;
+ default:
+ siz = def_siz;
+ tok--;
+ break;
+ }
+
+ dep_block((uint32_t)count, siz, (uint32_t)eval, eattr, exprbuf);
+
+ switch ((int)*tok)
+ {
+ case EOL:
+ return 0;
+ case ',':
+ tok++;
+ continue;
+ default:
+ return error(comma_error);
+ }
+ }
}
-int d_bss(void) {
- if(rgpu || rdsp)
- return(error("directive forbidden in gpu/dsp mode"));
- if(cursect != BSS) {
- savsect();
- switchsect(BSS);
- }
- return(0);
+//
+// Deposit 'count' values of size 'siz' in the current (non-BSS) segment
+//
+int dep_block(uint32_t count, WORD siz, uint32_t eval, WORD eattr, TOKEN * exprbuf)
+{
+ WORD tdb;
+ WORD defined;
+
+ tdb = (WORD)(eattr & TDB);
+ defined = (WORD)(eattr & DEFINED);
+
+ while (count--)
+ {
+ if ((challoc - ch_size) < 4)
+ chcheck(4L);
+
+ switch(siz)
+ {
+ case SIZB:
+ if (!defined)
+ {
+ AddFixup(FU_BYTE | FU_SEXT, sloc, exprbuf);
+ D_byte(0);
+ }
+ else
+ {
+ if (tdb)
+ return error("non-absolute byte value");
+
+ if (eval + 0x100 >= 0x200)
+ return error(range_error);
+
+ D_byte(eval);
+ }
+
+ break;
+ case SIZW:
+ case SIZN:
+ if (!defined)
+ {
+ AddFixup(FU_WORD | FU_SEXT, sloc, exprbuf);
+ D_word(0);
+ }
+ else
+ {
+ if (tdb)
+ MarkRelocatable(cursect, sloc, tdb, MWORD, NULL);
+
+ if (eval + 0x10000 >= 0x20000)
+ return error(range_error);
+
+ // Deposit 68000 or 6502 (byte-reversed) word
+ if (cursect != M6502)
+ D_word(eval)
+ else
+ D_rword(eval)
+
+ }
+
+ break;
+ case SIZL:
+ if (m6502)
+ return error(in_6502mode);
+
+ if (!defined)
+ {
+ AddFixup(FU_LONG, sloc, exprbuf);
+ D_long(0);
+ }
+ else
+ {
+ if (tdb)
+ MarkRelocatable(cursect, sloc, tdb, MLONG, NULL);
+
+ D_long(eval);
+ }
+
+ break;
+ }
+ }
+
+ return 0;
}
+
//
-// --- .ds[.size] expression -----------------------------------------------------------------------
+// .comm symbol, size
//
+int d_comm(void)
+{
+ SYM * sym;
+ char * p;
+ uint64_t eval;
-int d_ds(WORD siz) {
- VALUE eval;
+ if (m6502)
+ return error(in_6502mode);
- // This gets kind of stupid. This directive is disallowed in normal 68000 mode ("for your own
- // good!"), but is permitted for 6502 and Alcyon-compatibility modes.
- // For obvious reasons, no auto-even is done in 8-bit processor modes.
- if(as68_flag == 0 && (scattr & SBSS) == 0)
- return(error(".ds permitted only in BSS"));
+ if (*tok != SYMBOL)
+ return error("missing symbol");
- if(siz != SIZB && (sloc & 1)) // Automatic .even
- auto_even();
+ p = string[tok[1]];
+ tok += 2;
- if(abs_expr(&eval) != OK) return(0);
+ if (*p == '.') // Cannot .comm a local symbol
+ return error(locgl_error);
- // 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)) {
- listvalue(eval);
- eval *= siz;
- sloc += eval;
- just_bss = 1; // No data deposited (8-bit CPU mode)
- } else {
- dep_block(eval, siz, (VALUE)0, (WORD)(DEFINED|ABS), NULL);
- }
+ if ((sym = lookup(p, LABEL, 0)) == NULL)
+ sym = NewSymbol(p, LABEL, 0);
+ else
+ {
+ if (sym->sattr & DEFINED)
+ return error(".comm symbol already defined");
+ }
- at_eol();
- return(0);
+ sym->sattr = GLOBAL | COMMON | BSS;
+
+ if (*tok++ != ',')
+ return error(comma_error);
+
+ if (abs_expr(&eval) != OK) // Parse size of common region
+ return 0;
+
+ sym->svalue = (uint32_t)eval; // Install common symbol's size
+ at_eol();
+ return 0;
}
+
//
-// --- dc.b, dc.w / dc, dc.l -----------------------------------------------------------------------
-//
-
-int d_dc(WORD siz) {
- WORD eattr;
- VALUE eval;
- WORD tdb;
- WORD defined;
- LONG i;
- char *p;
- int movei = 0; // movei flag for dc.i
-
- if((scattr & SBSS) != 0)
- return(error("illegal initialization of section"));
-
- if((siz != SIZB) && (sloc & 1))
- auto_even();
-
- for(;; ++tok) {
- // dc.b 'string' [,] ...
- if (siz == SIZB && *tok == STRING && (tok[2] == ',' || tok[2] == EOL)) {
- i = strlen((const char*)tok[1]);
- if((challoc - ch_size) < i)
- chcheck(i);
- for(p = (char *)tok[1]; *p != EOS; ++p)
- D_byte(*p);
- tok += 2;
- goto comma;
- }
-
- if(*tok == 'I') {
- movei = 1;
- tok++;
- siz = SIZL;
- }
-
- // dc.x <expression>
- if(expr(exprbuf, &eval, &eattr, NULL) != OK)
- return(0);
- tdb = (WORD)(eattr & TDB);
- defined = (WORD)(eattr & DEFINED);
- if((challoc - ch_size) < 4)
- chcheck(4L);
-
- switch(siz) {
- case SIZB:
- if(!defined) {
- fixup(FU_BYTE|FU_SEXT, sloc, exprbuf);
- D_byte(0);
- } else {
- if(tdb)
- return(error("non-absolute byte value"));
- if(eval + 0x100 >= 0x200)
- return(error(range_error));
- D_byte(eval);
- }
- break;
- case SIZW:
- case SIZN:
- if(!defined) {
- fixup(FU_WORD|FU_SEXT, sloc, exprbuf);
- D_word(0);
- } else {
- if(tdb)
- rmark(cursect, sloc, tdb, MWORD, NULL);
- if(eval + 0x10000 >= 0x20000)
- return(error(range_error));
- // Deposit 68000 or 6502 (byte-reversed) word
- D_word(eval);
- }
- break;
- case SIZL:
- if(!defined) {
- if(movei)
- fixup(FU_LONG|FU_MOVEI, sloc, exprbuf);
- else
- fixup(FU_LONG, sloc, exprbuf);
- D_long(0);
- } else {
- if(tdb)
- rmark(cursect, sloc, tdb, MLONG, NULL);
- if(movei)
- eval = ((eval >> 16) & 0x0000FFFF) | ((eval << 16) & 0xFFFF0000);
- D_long(eval);
- }
- break;
- }
-
- comma:
-
- if(*tok != ',')
- break;
- }
-
- at_eol();
- return(0);
+// .list - Turn listing on
+//
+int d_list(void)
+{
+ if (list_flag)
+ listing++;
+
+ return 0;
}
+
//
-// --- dcb[.siz] expr1,expr2 - Make 'expr1' copies of 'expr2' --------------------------------------
+// .nlist - Turn listing off
//
+int d_nlist(void)
+{
+ if (list_flag)
+ listing--;
-int d_dcb(WORD siz) {
- VALUE evalc, eval;
- WORD eattr;
+ return 0;
+}
- if((scattr & SBSS) != 0)
- return(error("illegal initialization of section"));
- if(abs_expr(&evalc) != OK)
- return(0);
+//
+// .68000 - Back to 68000 TEXT segment
+//
+int d_68000(void)
+{
+ rgpu = rdsp = 0;
+ // Switching from gpu/dsp sections should reset any ORG'd Address
+ orgactive = 0;
+ orgwarning = 0;
+ SaveSection();
+ SwitchSection(TEXT);
+ activecpu = CPU_68000;
+ return 0;
+}
- if(*tok++ != ',')
- return(error("missing comma"));
- if(expr(exprbuf, &eval, &eattr, NULL) < 0)
- return(0);
+//
+// .68020 - Back to 68000 TEXT segment and select 68020
+//
+int d_68020(void)
+{
+ d_68000();
+ activecpu = CPU_68020;
+ return 0;
+}
- if((siz != SIZB) && (sloc & 1))
- auto_even();
- dep_block(evalc, siz, eval, eattr, exprbuf);
- return(0);
+//
+// .68030 - Back to 68000 TEXT segment and select 68030
+//
+int d_68030(void)
+{
+ d_68000();
+ activecpu = CPU_68030;
+ return 0;
}
+
//
-// -------------------------------------------------------------------------------------------------
-// Generalized initialization directive
-//
-// .init[.siz] [#count,] expression [.size] , ...
-//
-// The size suffix on the ".init" directive becomes the default size of the objects to deposit.
-// If an item is preceeded with a sharp (immediate) sign and an expression, it specifies a repeat
-// count. The value to be deposited may be followed by a size suffix, which overrides the
-// default size.
-// -------------------------------------------------------------------------------------------------
-//
-
-int d_init(WORD def_siz) {
- VALUE count;
- VALUE eval;
- WORD eattr;
- WORD siz;
-
- if((scattr & SBSS) != 0)
- return(error(".init not permitted in BSS or ABS"));
-
- if(rgpu || rdsp)
- return(error("directive forbidden in gpu/dsp mode"));
-
- for(;;) {
- // Get repeat count (defaults to 1)
- if(*tok == '#') {
- ++tok;
- if(abs_expr(&count) != OK)
- return(0);
- if(*tok++ != ',')
- return(error(comma_error));
- } else
- count = 1;
-
- // Evaluate expression to deposit
- if(expr(exprbuf, &eval, &eattr, NULL) < 0)
- return(0);
-
- switch((int)*tok++) { // Determine size of object to deposit
- case DOTB: siz = SIZB; break;
- case DOTW: siz = SIZB; break;
- case DOTL: siz = SIZL; break;
- default:
- siz = def_siz;
- --tok;
- break;
- }
-
- dep_block(count, siz, eval, eattr, exprbuf);
-
- switch((int)*tok) {
- case EOL:
- return(0);
- case ',':
- ++tok;
- continue;
- default:
- return(error(comma_error));
- }
- }
+// .68040 - Back to 68000 TEXT segment and select 68040
+//
+int d_68040(void)
+{
+ d_68000();
+ activecpu = CPU_68040;
+ activefpu = FPU_68040;
+ return 0;
}
+
+//
+// .68060 - Back to 68000 TEXT segment and select 68060
//
-// --- Deposit 'count' values of size 'siz' in the current (non-BSS) segment -----------------------
-//
-
-int dep_block(VALUE count, WORD siz, VALUE eval, WORD eattr, TOKEN *exprbuf) {
- WORD tdb;
- WORD defined;
-
- tdb = (WORD)(eattr & TDB);
- defined = (WORD)(eattr & DEFINED);
-
- while(count--) {
- if((challoc - ch_size) < 4)
- chcheck(4L);
-
- switch(siz) {
- case SIZB:
- if(!defined) {
- fixup(FU_BYTE|FU_SEXT, sloc, exprbuf);
- D_byte(0);
- } else {
- if(tdb)
- return(error("non-absolute byte value"));
- if(eval + 0x100 >= 0x200)
- return(error(range_error));
- D_byte(eval);
- }
- break;
- case SIZW:
- case SIZN:
- if(!defined) {
- fixup(FU_WORD|FU_SEXT, sloc, exprbuf);
- D_word(0);
- } else {
- if(tdb)
- rmark(cursect, sloc, tdb, MWORD, NULL);
- if(eval + 0x10000 >= 0x20000)
- return(error(range_error));
-
- // Deposit 68000 or 6502 (byte-reversed) word
- D_word(eval);
- }
- break;
- case SIZL:
- if(!defined) {
- fixup(FU_LONG, sloc, exprbuf);
- D_long(0);
- } else {
- if(tdb)
- rmark(cursect, sloc, tdb, MLONG, NULL);
- D_long(eval);
- }
- break;
- }
- }
- return(0);
+int d_68060(void)
+{
+ d_68000();
+ activecpu = CPU_68060;
+ activefpu = FPU_68040;
+ return 0;
}
+
//
-// --- .comm symbol, size --------------------------------------------------------------------------
+// .68881 - Back to 68000 TEXT segment and select 68881 FPU
//
+int d_68881(void)
+{
+ d_68000();
+ activefpu = FPU_68881;
+ return 0;
+}
-int d_comm(void) {
- SYM *sym;
- char *p;
- VALUE eval;
- if(*tok != SYMBOL)
- return(error("missing symbol"));
- p = (char *)tok[1];
- tok += 2;
+//
+// .68882 - Back to 68000 TEXT segment and select 68882 FPU
+//
+int d_68882(void)
+{
+ d_68000();
+ activefpu = FPU_68881;
+ return 0;
+}
- if(*p == '.') // Cannot .comm a local symbol
- return(error(locgl_error));
- if((sym = lookup(p, LABEL, 0)) == NULL)
- sym = newsym(p, LABEL, 0);
- else {
- if(sym->sattr & DEFINED)
- return(error(".comm symbol already defined"));
- }
+//
+// nofpu - Deselect FPUs.
+//
+int d_nofpu(void)
+{
+ activefpu = FPU_NONE;
+ return 0;
+}
- sym->sattr = GLOBAL|COMMON|BSS;
- if(*tok++ != ',')
- return(error(comma_error));
- if(abs_expr(&eval) != OK) // Parse size of common region
- return(0);
- sym->svalue = eval; // Install common symbol's size
- at_eol();
- return(0);
+//
+// DSP56001
+//
+int d_56001(void)
+{
+ return error("Not yet, child. Be patient.");
}
+
//
-// --- .list - Turn listing on --------------------------------------------------------------------
+// .gpu - Switch to GPU assembler
//
+int d_gpu(void)
+{
+ if ((cursect != TEXT) && (cursect != DATA))
+ {
+ error(".gpu can only be used in the TEXT or DATA segments");
+ return ERROR;
+ }
-int d_list(void) {
- if(list_flag)
- ++listing;
- return(0);
+ // If previous section was dsp or 68000 then we need to reset ORG'd Addresses
+ if (!rgpu)
+ {
+//printf("Resetting ORG...\n");
+ orgactive = 0;
+ orgwarning = 0;
+ }
+//else printf("NOT resetting ORG!\n");
+
+ rgpu = 1; // Set GPU assembly
+ rdsp = 0; // Unset DSP assembly
+ regbank = BANK_N; // Set no default register bank
+ return 0;
}
+
//
-// --- .nlist - Turn listing off -------------------------------------------------------------------
+// .dsp - Switch to DSP assembler
//
+int d_dsp(void)
+{
+ if ((cursect != TEXT) && (cursect != DATA))
+ {
+ error(".dsp can only be used in the TEXT or DATA segments");
+ return ERROR;
+ }
+
+ // If previous section was gpu or 68000 then we need to reset ORG'd Addresses
+ if (!rdsp)
+ {
+ orgactive = 0;
+ orgwarning = 0;
+ }
-int d_nlist(void) {
- if(list_flag)
- --listing;
- return(0);
+ rdsp = 1; // Set DSP assembly
+ rgpu = 0; // Unset GPU assembly
+ regbank = BANK_N; // Set no default register bank
+ return 0;
}
+
//
-// --- .68000 - Back to 68000 TEXT segment ---------------------------------------------------------
+// .cargs [#offset], symbol[.size], ...
//
-
-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;
- savsect();
- switchsect(TEXT);
- return(0);
+// Lists of registers may also be mentioned; they just take up space. Good for
+// "documentation" purposes:
+//
+// .cargs a6, .arg1, .arg2, .arg3...
+//
+// Symbols thus created are ABS and EQUATED.
+//
+int d_cargs(void)
+{
+ uint64_t eval = 4; // Default to 4 if no offset specified (to account for
+ // return address)
+ WORD rlist;
+ SYM * symbol;
+ char * p;
+ 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)
+ {
+ p = string[tok[1]];
+
+ // Set env to either local (dot prefixed) or global scope
+ env = (*p == '.' ? curenv : 0);
+ symbol = lookup(p, LABEL, env);
+
+ if (symbol == NULL)
+ {
+ symbol = NewSymbol(p, LABEL, env);
+ symbol->sattr = 0;
+ }
+ else if (symbol->sattr & DEFINED)
+ return error("multiply-defined label '%s'", p);
+
+ // Put symbol in "order of definition" list
+ AddToSymbolDeclarationList(symbol);
+
+ symbol->sattr |= (ABS | DEFINED | EQUATED);
+ symbol->svalue = (uint32_t)eval;
+ tok += 2;
+
+ // 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++;
+ }
+
+ eval += 2;
+ }
+ 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(".cargs syntax");
+ }
+ }
+
+ // Eat commas in between each argument, if they exist
+ if (*tok == ',')
+ tok++;
+ }
}
+
//
-// --- .gpu - Switch to GPU Assembler --------------------------------------------------------------
-//
-
-int d_gpu(void) {
- if((cursect != TEXT) && (cursect != DATA)) {
- error(".gpu 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 = 0;
- jpad = 0;
- return(0);
+// .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)
+{
+ uint64_t 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)
+ {
+ 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)
+ {
+ symbol = NewSymbol(symbolName, LABEL, env);
+ symbol->sattr = 0;
+ }
+ else if (symbol->sattr & DEFINED)
+ return error("multiply-defined label '%s'", symbolName);
+
+ // Put symbol in "order of definition" list
+ AddToSymbolDeclarationList(symbol);
+
+ 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;
+ }
+
+ symbol->sattr |= (ABS | DEFINED | EQUATED);
+ symbol->svalue = (uint32_t)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)
+ {
+ 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");
+ }
+
+ 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++;
+ }
}
+
//
-// --- 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;
- return(0);
+// Undefine a macro - .undefmac macname [, macname...]
+//
+int undmac1(char * p)
+{
+ SYM * symbol = lookup(p, MACRO, 0);
+
+ // If the macro symbol exists, cause it to disappear
+ if (symbol != NULL)
+ symbol->stype = (BYTE)SY_UNDEF;
+
+ return OK;
}
+
+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;
+}
+
+
+int d_gpumain(void)
+{
+ return error("What the hell? Do you think we adhere to the Goof standard?");
+}
+
+
+//
+// .opt - turn a specific (or all) optimisation on or off
//
-// --- .dsp - Switch to DSP Assembler --------------------------------------------------------------
-//
-
-int d_dsp(void) {
- if((cursect != TEXT) && (cursect != DATA)) {
- error(".dsp can only be used in the TEXT or DATA segments");
- return(ERROR);
- }
- // If previous section was gpu or 68000 then we need to reset ORG'd Addresses
- if(!rdsp) {
- orgactive = 0;
- 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;
- return(0);
+int d_opt(void)
+{
+ while (*tok != EOL)
+ {
+ if (*tok == STRING)
+ {
+ tok++;
+ char * tmpstr = string[*tok++];
+
+ if (ParseOptimization(tmpstr) != OK)
+ return error("unknown optimization flag '%s'", tmpstr);
+ }
+ else
+ return error(".opt directive needs every switch enclosed inside quotation marks");
+ }
+
+ return OK;
}
+
//
-// -------------------------------------------------------------------------------------------------
-// .cargs [#offset], symbol[.size], ...
-//
-// Lists of registers may also be mentioned; they just take up space. Good for "documentation"
-// purposes.
-//
-// .cargs a6,.arg1, .arg2, .arg3...
-//
-// The symbols are ABS and EQUATED.
-// -------------------------------------------------------------------------------------------------
-//
-
-int d_cargs(void) {
- VALUE eval;
- WORD rlist;
- SYM *sy;
- char *p;
- 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);
- if(*tok == ',') // Eat comma if it's there
- ++tok;
- } else
- eval = 4;
-
- for(;;) {
- if(*tok == SYMBOL) {
- p = (char *)tok[1];
- if(*p == '.')
- env = curenv;
- else
- env = 0;
-
- sy = lookup(p, LABEL, env);
- if(sy == NULL) {
- sy = newsym(p, LABEL, env);
- sy->sattr = 0;
- } else
- if(sy->sattr & DEFINED)
- return(errors("multiply-defined label '%s'", p));
-
- // Put symbol in "order of definition" list
- if(!(sy->sattr & SDECLLIST)) sym_decl(sy);
-
- sy->sattr |= ABS|DEFINED|EQUATED;
- sy->svalue = eval;
- tok += 2;
-
- switch((int)*tok) {
- case DOTL:
- eval += 2;
- case DOTB:
- case DOTW:
- ++tok;
- }
- eval += 2;
- } else
- if(*tok >= KW_D0 && *tok <= KW_A7) {
- if(reglist(&rlist) < 0)
- return(0);
- for(i = 0; i++ < 16; 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"));
- }
-
- if(*tok == ',')
- ++tok;
- }
+// .if, Start conditional assembly
+//
+int d_if(void)
+{
+ WORD eattr;
+ uint64_t eval;
+ SYM * esym;
+ IFENT * rif = f_ifent;
+
+ // Alloc an IFENTRY
+ if (rif == 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;
}
+
//
-// --- Undefine a macro - .undefmac macname [, macname...] -----------------------------------------
+// .else, Do alternate case for .if
//
+int d_else(void)
+{
+ IFENT * rif = ifent;
+
+ if (rif->if_prev == NULL)
+ return error("mismatched .else");
-int undmac1(char *p) {
- SYM *sy;
+ if (disabled)
+ disabled = rif->if_prev->if_state;
+ else
+ disabled = 1;
- // If the macro symbol exists, cause it to dissappear
- if((sy = lookup(p, MACRO, 0)) != NULL) sy->stype = (BYTE)SY_UNDEF;
- return(OK);
+ rif->if_state = (WORD)disabled;
+ return 0;
}
-int d_undmac(void) {
- symlist(undmac1);
- 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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