-////////////////////////////////////////////////////////////////////////////////////////////////////
-// 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, 2011 Reboot and Friends
+// Copyright (C) 199x Landon Dyer, 2011-2020 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 "procln.h"
-#include "listing.h"
+#include "6502.h"
#include "amode.h"
+#include "direct.h"
+#include "dsp56k_amode.h"
+#include "dsp56k_mach.h"
#include "error.h"
-#include "sect.h"
#include "expr.h"
+#include "listing.h"
#include "mach.h"
-#include "direct.h"
#include "macro.h"
+#include "op.h"
+#include "riscasm.h"
+#include "sect.h"
#include "symbol.h"
-#include "risca.h"
-#define DEF_KW // Declare keyword values
-#include "kwtab.h" // Incl generated keyword tables & defs
+#define DEF_KW // Declare keyword values
+#include "kwtab.h" // Incl generated keyword tables & defs
-#define DEF_MN // Incl 68k keyword definitions
-#define DECL_MN // Incl 68k keyword state machine tables
+#define DEF_MN // Incl 68k keyword definitions
+#define DECL_MN // Incl 68k keyword state machine tables
#include "mntab.h"
#define DEF_MR
#define DECL_MR
#include "risckw.h"
-IFENT *ifent; // Current ifent
-static IFENT ifent0; // Root ifent
-static IFENT *f_ifent; // Freelist of ifents
-static int disabled; // Assembly conditionally disabled
-int just_bss; // 1, ds.b in microprocessor mode
-VALUE pcloc; // Value of "PC" at beginning of line
-IFENT *ifent; // Current ifent
-SYM *lab_sym; // Label on line (or NULL)
+#define DEF_MP // Include 6502 keyword definitions
+#define DECL_MP // Include 6502 keyword state machine tables
+#include "6502kw.h"
+#define DEF_MO // Include OP keyword definitions
+#define DECL_MO // Include OP keyword state machine tables
+#include "opkw.h"
-char extra_stuff[] = "extra (unexpected) text found after addressing mode";
-char *comma_error = "missing comma";
-char *syntax_error = "syntax error";
-char *locgl_error = "cannot GLOBL local symbol";
-char *lab_ignored = "label ignored";
+#define DEF_DSP // Include DSP56K keywords definitions
+#define DECL_DSP // Include DSP56K keyword state machine tables
+#include "dsp56kkw.h"
-// Table to convert an addressing-mode number to a bitmask.
-LONG amsktab[0112] = {
- M_DREG, M_DREG, M_DREG, M_DREG,
- M_DREG, M_DREG, M_DREG, M_DREG,
-
- M_AREG, M_AREG, M_AREG, M_AREG,
- M_AREG, M_AREG, M_AREG, M_AREG,
-
- M_AIND, M_AIND, M_AIND, M_AIND,
- M_AIND, M_AIND, M_AIND, M_AIND,
-
- M_APOSTINC, M_APOSTINC, M_APOSTINC, M_APOSTINC,
- M_APOSTINC, M_APOSTINC, M_APOSTINC, M_APOSTINC,
-
- M_APREDEC, M_APREDEC, M_APREDEC, M_APREDEC,
- M_APREDEC, M_APREDEC, M_APREDEC, M_APREDEC,
-
- M_ADISP, M_ADISP, M_ADISP, M_ADISP,
- M_ADISP, M_ADISP, M_ADISP, M_ADISP,
-
- 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
-//
-// --- Initialize Line Processor -------------------------------------------------------------------
-//
+IFENT * ifent; // Current ifent
+static IFENT ifent0; // Root ifent
+IFENT * f_ifent; // Freelist of ifents
+int disabled; // Assembly conditionally disabled
+int just_bss; // 1, ds.b in microprocessor mode
+uint32_t pcloc; // Value of "PC" at beginning of line
+SYM * lab_sym; // Label on line (or NULL)
+char * label_defined; // The name of the last label defined in current line (if any)
-void init_procln(void) {
- disabled = 0;
- ifent = &ifent0;
- f_ifent = ifent0.if_prev = NULL;
- ifent0.if_state = 0;
-}
+const char extra_stuff[] = "extra (unexpected) text found after addressing mode";
+const char comma_error[] = "missing comma";
+const char syntax_error[] = "syntax error";
+const char locgl_error[] = "cannot GLOBL local symbol";
+const char lab_ignored[] = "label ignored";
-//
-// --- Line Processor ------------------------------------------------------------------------------
-//
+// Table to convert an addressing-mode number to a bitmask.
+LONG amsktab[0124] = {
+ M_DREG, M_DREG, M_DREG, M_DREG,
+ M_DREG, M_DREG, M_DREG, M_DREG,
+
+ M_AREG, M_AREG, M_AREG, M_AREG,
+ M_AREG, M_AREG, M_AREG, M_AREG,
+
+ M_AIND, M_AIND, M_AIND, M_AIND,
+ M_AIND, M_AIND, M_AIND, M_AIND,
+
+ M_APOSTINC, M_APOSTINC, M_APOSTINC, M_APOSTINC,
+ M_APOSTINC, M_APOSTINC, M_APOSTINC, M_APOSTINC,
+
+ M_APREDEC, M_APREDEC, M_APREDEC, M_APREDEC,
+ M_APREDEC, M_APREDEC, M_APREDEC, M_APREDEC,
+
+ M_ADISP, M_ADISP, M_ADISP, M_ADISP,
+ M_ADISP, M_ADISP, M_ADISP, M_ADISP,
+
+ 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
+ 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
+int HandleLabel(char *, int);
-void assemble(void) {
- int state; // Keyword machine state (output)
- int j; // Random int, must be fast
- char *p; // Random char ptr, must be fast
- TOKEN *tk; // First token in line
- char *label; // Symbol (or NULL)
- char *equate; // Symbol (or NULL)
- int labtyp = 0; // Label type (':', DCOLON)
- int equtyp = 0; // Equ type ('=', DEQUALS)
- VALUE eval; // Expression value
- WORD eattr; // Expression attributes
- SYM *esym; // External symbol involved in expr.
- WORD siz = 0; // Size suffix to mnem/diretve/macro
- LONG amsk0, amsk1; // Address-type masks for ea0, ea1
- MNTAB *m; // Code generation table pointer
- SYM *sy, *sy2; // Symbol (temp usage)
- char *opname = NULL; // Name of dirctve/mnemonic/macro
- int listflag; // 0: Don't call listeol()
- int as68mode = 0; // 1: Handle multiple labels
- WORD rmask; // Register list, for REG
- int registerbank; // RISC register bank
- int riscreg; // RISC register
-
- listflag = 0; // Initialise listing flag
-
- loop: // Line processing loop label
-
- if(tokln() == TKEOF) { // Get another line of tokens
- if(list_flag && listflag) // Flush last line of source
- listeol();
- if(ifent->if_prev != NULL) // Check conditional token
- error("hit EOF without finding matching .endif");
- return;
- }
-
- if(list_flag) {
- if(listflag && listing > 0) listeol(); // Tell listing generator about EOL
- lstout((char)(disabled ? '-' : lntag)); // Prepare new line for listing
- listflag = 1; // OK to call `listeol' now
- just_bss = 0; // Reset just_bss mode
- }
-
- state = -3; // No keyword (just EOL)
- label = NULL; // No label
- lab_sym = NULL; // No (exported) label
- equate = NULL; // No equate
- tk = tok; // Save first token in line
- pcloc = (VALUE)sloc; // Set beginning-of-line PC
-
- loop1: // Internal line processing loop
-
- if(*tok == EOL) // Restart loop if end-of-line
- goto loop;
-
- if(*tok != SYMBOL) { // First token MUST be a symbol
- error(syntax_error);
- goto loop;
- }
-
- j = (int)tok[2]; // Skip equates (normal statements)
- if(j == '=' || j == DEQUALS || j == SET || j == REG || j == EQUREG || j == CCDEF) {
- equate = (char *)tok[1];
- equtyp = j;
- tok += 3;
- goto normal;
- }
-
- if(j == ':' || j == DCOLON) { // Skip past label (but record it)
-
- as68label:
-
- label = (char *)tok[1]; // Get label name
- labtyp = tok[2]; // Get label type
- tok += 3; // Go to next line token
-
- // Handle multiple labels; if there's another label, go process it,
- // and come back at `as68label' above.
- if(as68_flag) {
- as68mode = 0;
- if(*tok == SYMBOL && tok[2] == ':') {
- as68mode = 1;
- goto do_label;
- }
- }
- }
-
- if(*tok == EOL) // EOL is legal here...
- goto normal;
-
- if(*tok++ != SYMBOL) { // Next token MUST be a symbol
- error(syntax_error);
- goto loop;
- }
- opname = p = (char *)*tok++; // Store opcode name here
-
- // Check to see if the SYMBOL is a keyword (a mnemonic or directive).
- // On output, `state' will have one of the values:
- // -3 there was no symbol (EOL)
- // -2..-1 the symbol didn't match any keyword
- // 0..499 vanilla directives (dc, ds, etc.)
- // 500..999 electric directives (macro, rept, etc.)
- // 1000..+ mnemonics (move, lsr, etc.)
- for(state = 0; state >= 0;) {
- j = mnbase[state] + (int)tolowertab[*p];
- if(mncheck[j] != state) { // Reject, character doesn't match
- state = -1; // No match
- break;
- }
- if(!*++p) { // Must accept or reject at EOS
- state = mnaccept[j]; // (-1 on no terminal match)
- break;
- }
- state = mntab[j];
- }
-
- // 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;
-
- // Do special directives (500..999) (These must be handled in "real time")
- if(state >= 500 && state < 1000)
- switch(state) {
- case MN_IF:
- d_if();
- 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;
- if(!(eattr & DEFINED)) {
- error(undef_error);
- goto loop;
- }
- if(*tok++ != ',') {
- error(comma_error);
- goto loop;
- }
- if(eval == 0)
- goto loop;
- goto loop1;
- case MN_MACRO: // .macro --- macro definition
- if(!disabled) {
- if(label != NULL)
- warn(lab_ignored);
- defmac();
- }
- goto loop;
- case MN_EXITM: // .exitm --- exit macro
- case MN_ENDM: // .endm --- same as .exitm
- if(!disabled) {
- if(label != NULL)
- warn(lab_ignored);
- exitmac();
- }
- goto loop;
- case MN_REPT:
- if(!disabled) {
- if(label != NULL)
- warn(lab_ignored);
- defrept();
- }
- goto loop;
- case MN_ENDR:
- if(!disabled)
- error("mis-nested .endr");
- goto loop;
- }
-
- normal:
-
- if(disabled) // Conditionally disabled code
- goto loop;
-
- // Do equates
- if(equate != NULL) {
- j = 0; // Pick global or local sym enviroment
- if(*equate == '.')
- j = curenv;
-
- sy = lookup(equate, LABEL, j);
- if(sy == NULL) {
- sy = newsym(equate, LABEL, j);
- sy->sattr = 0;
- if(equtyp == DEQUALS) {
- if(j) { // Can't GLOBAL a local symbol
- error(locgl_error);
- goto loop;
- }
- sy->sattr = GLOBAL;
- }
- } else if((sy->sattr & DEFINED) && equtyp != SET) {
- if((equtyp == EQUREG) && (sy->sattre & UNDEF_EQUR)) {
- sy->sattre |= ~UNDEF_EQUR;
- sy->svalue = 0;
- } else if((equtyp == CCDEF) && (sy->sattre & UNDEF_CC)) {
- sy->sattre |= ~UNDEF_CC;
- sy->svalue = 0;
- } else {
- errors("multiple equate to '%s'", sy->sname);
- goto loop;
- }
- }
-
- // Put symbol in "order of definition" list
- if(!(sy->sattr & SDECLLIST)) sym_decl(sy);
-
- // Parse value to equate symbol to;
- // o .equr
- // o .reg
- // o everything else
- if(equtyp == EQUREG) {
- if(!rgpu && !rdsp) { // Check that we are in a RISC section
- error(".equr/.regequ must be defined in .gpu/.dsp section");
- goto loop;
- }
- if((*tok >= KW_R0) && (*tok <= KW_R31)) { // Check for register to equate to
- sy->sattre = EQUATEDREG | RISCSYM; // Mark as equated register
- riscreg = (*tok - KW_R0);
- sy->sattre |= (riscreg << 8); // Store register number
- if((tok[1] == ',') && (tok[2] == CONST)) {
- tok += 3;
- if(*tok == 0) registerbank = BANK_0;
- else if(*tok == 1) registerbank = BANK_1;
- else registerbank = BANK_N;
- } else {
- registerbank = BANK_N;
- }
- sy->sattre |= regbank; // Store register bank
- eattr = ABS | DEFINED | GLOBAL;
- eval = 0x80000080 + (riscreg) + (registerbank << 8);
- tok++;
- } else if(tok[0] == SYMBOL) { // Checking for a register symbol
- sy2 = lookup((char *)tok[1], LABEL, j);
- if(!sy2 || !(sy2->sattre & EQUATEDREG)) { // Make sure symbol is a valid equreg
- error("invalid GPU/DSP .equr/.regequ definition");
- goto loop;
- } else {
- eattr = ABS | DEFINED | GLOBAL; // Copy symbols attributes
- sy->sattre = sy2->sattre;
- eval = (sy2->svalue & 0xFFFFF0FF);
- tok += 2;
- }
- } else {
- error("invalid GPU/DSP .equr/.regequ definition");
- goto loop;
- }
- } else if(equtyp == REG) {
- if(reglist(&rmask) < 0)
- goto loop;
- eval = (VALUE)rmask;
- eattr = ABS | DEFINED;
- } else if(equtyp == CCDEF) {
- sy->sattre |= EQUATEDCC;
- eattr = ABS | DEFINED | GLOBAL;
- if(tok[0] == SYMBOL) {
- sy2 = lookup((char *)tok[1], LABEL, j);
- if(!sy2 || !(sy2->sattre & EQUATEDCC)) {
- error("invalid gpu/dsp .ccdef definition");
- goto loop;
- } else {
- eattr = ABS | DEFINED | GLOBAL;
- sy->sattre = sy2->sattre;
- eval = sy2->svalue;
- tok += 2;
- }
- } else
- if(expr(exprbuf, &eval, &eattr, &esym) != OK)
- goto loop;
- } else if(*tok == SYMBOL) { //equ a equr
- sy2 = lookup((char *)tok[1], LABEL, j);
- if(sy2 && (sy2->sattre & EQUATEDREG)) {
- sy->stype = sy2->stype;
- sy->sattr = sy2->sattr;
- sy->sattre = sy2->sattre;
- sy->svalue = (sy2->svalue & 0xFFFFF0FF);
- goto loop;
- } else
- if(expr(exprbuf, &eval, &eattr, &esym) != OK)
- goto loop;
- } else
- if(expr(exprbuf, &eval, &eattr, &esym) != OK)
- goto loop;
-
- if(!(eattr & DEFINED)) {
- error(undef_error);
- goto loop;
- }
-
-
- sy->sattr |= eattr | EQUATED; // Symbol inherits value and attributes
- sy->svalue = eval;
- if(list_flag) // Put value in listing
- listvalue(eval);
-
- at_eol(); // Must be at EOL now
- goto loop;
- }
-
- // Do labels
- if(label != NULL) {
-
- do_label:
-
- j = 0;
- if(*label == '.')
- j = curenv;
- sy = lookup(label, LABEL, j);
-
- if(sy == NULL) {
- sy = newsym(label, LABEL, j);
- sy->sattr = 0;
- sy->sattre = RISCSYM;
- } else if(sy->sattr & DEFINED) {
- errors("multiply-defined label '%s'", label);
- goto loop;
- }
-
- // Put symbol in "order of definition" list
- if(!(sy->sattr & SDECLLIST)) sym_decl(sy);
-
- if(orgactive) {
- sy->svalue = orgaddr;
- sy->sattr |= ABS | DEFINED | EQUATED;
- } else {
- sy->svalue = sloc;
- sy->sattr |= DEFINED | cursect;
- }
-
- lab_sym = sy;
- if(!j)
- ++curenv;
-
- if(labtyp == DCOLON) { // Make label global
- if(j) {
- error(locgl_error);
- goto loop;
- }
- sy->sattr |= GLOBAL;
- }
-
- // If we're in as68 mode, and there's another label, go back and handle it
- if(as68_flag && as68mode)
- goto as68label;
- }
-
- // Punt on EOL
- if(state == -3)
- goto loop;
-
- // If we are in GPU or DSP mode and still in need of a mnemonic then search for one
- if((rgpu || rdsp) && (state < 0 || state >= 1000)) {
- for(state = 0, p = opname; state >= 0;) {
- j = mrbase[state] + (int)tolowertab[*p];
- if(mrcheck[j] != state) { // Reject, character doesn't match
- state = -1; // No match
- break;
- }
-
- if(!*++p) { // Must accept or reject at EOS
- state = mraccept[j]; // (-1 on no terminal match)
- break;
- }
- state = mrtab[j];
- }
-
- // Call RISC code generator if we found a mnemonic
- if(state >= 3000) {
- risccg(state);
- goto loop;
- }
- }
-
- // Invoke macro or complain about bad mnemonic
- if(state < 0) {
- if((sy = lookup(opname, MACRO, 0)) != NULL)
- invokemac(sy, siz);
- else errors("unknown op '%s'", opname);
- goto loop;
- }
-
- // Call directive handlers
- if(state < 500) {
- (*dirtab[state])(siz);
- 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
- if(scattr & SBSS) {
- error("cannot initialize non-storage (BSS) section");
- goto loop;
- }
-
- if(sloc & 1) // Automatic .even
- auto_even();
-
- if(challoc - ch_size < 18) // Make sure have space in current chunk
- chcheck(0L);
-
- m = &machtab[state - 1000];
- if(m->mnattr & CGSPECIAL) { // Call special-mode handler
- (*m->mnfunc)(m->mninst, siz);
- goto loop;
- }
-
- if(amode(1) < 0) // Parse 0, 1 or 2 addr modes
- goto loop;
-
- if(*tok != EOL)
- error(extra_stuff);
-
- amsk0 = amsktab[am0];
- amsk1 = amsktab[am1];
-
- // Catch attempts to use ".B" with an address register (yes, this check does work at this level)
- if(siz == SIZB && (am0 == AREG || am1 == AREG)) {
- error("cannot use '.b' with an address register");
- goto loop;
- }
-
- for(;;) {
- if((m->mnattr & siz) && (amsk0 & m->mn0) != 0 && (amsk1 & m->mn1) != 0) {
- (*m->mnfunc)(m->mninst, siz);
- goto loop;
- }
- m = &machtab[m->mncont];
- }
-}
-//
-// --- .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 *)amem((LONG)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 ------------------------------------------------------------
+// Initialize line processor
//
-
-int d_else(void) {
- IFENT *rif;
-
- 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);
+void InitLineProcessor(void)
+{
+ disabled = 0;
+ ifent = &ifent0;
+ f_ifent = ifent0.if_prev = NULL;
+ ifent0.if_state = 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'.
-// -------------------------------------------------------------------------------------------------
+// Line processor
//
+void Assemble(void)
+{
+ int state; // Keyword machine state (output)
+ int j; // Random int, must be fast
+ char * p; // Random char ptr, must be fast
+ TOKEN * tk; // First token in line
+ char * label; // Symbol (or NULL)
+ char * equate; // Symbol (or NULL)
+ int labtyp = 0; // Label type (':', DCOLON)
+ int equtyp = 0; // Equ type ('=', DEQUALS)
+ uint64_t eval; // Expression value
+ WORD eattr; // Expression attributes
+ SYM * esym; // External symbol involved in expr.
+ WORD siz = 0; // Size suffix to mnem/diretve/macro
+ LONG amsk0, amsk1; // Address-type masks for ea0, ea1
+ MNTAB * m; // Code generation table pointer
+ SYM * sy, * sy2; // Symbol (temp usage)
+ char * opname = NULL; // Name of dirctve/mnemonic/macro
+ int listflag; // 0: Don't call listeol()
+ WORD rmask; // Register list, for REG
+ int registerbank; // RISC register bank
+ int riscreg; // RISC register
+ listflag = 0; // Initialise listing flag
+
+loop: // Line processing loop label
+
+ // Get another line of tokens
+ if (TokenizeLine() == TKEOF)
+ {
+DEBUG { printf("Assemble: Found TKEOF flag...\n"); }
+ if (list_flag && listflag) // Flush last line of source
+ listeol();
+
+ if (ifent->if_prev != NULL) // Check conditional token
+ error("hit EOF without finding matching .endif");
+
+ return;
+ }
+
+ DEBUG { DumpTokenBuffer(); }
+
+ if (list_flag)
+ {
+ if (listflag && listing > 0)
+ listeol(); // Tell listing generator about EOL
+
+ lstout((char)(disabled ? '-' : lntag)); // Prepare new line for listing
+ listflag = 1; // OK to call `listeol' now
+ just_bss = 0; // Reset just_bss mode
+ }
+
+ state = -3; // No keyword (just EOL)
+ label = NULL; // No label
+ label_defined = NULL; // No label defined yet
+ lab_sym = NULL; // No (exported) label
+ equate = NULL; // No equate
+ tk = tok; // Save first token in line
+ pcloc = (uint32_t)sloc; // Set beginning-of-line PC
+
+loop1: // Internal line processing loop
+
+ if (*tok == EOL) // Restart loop if end-of-line
+ goto loop;
+
+ // First token MUST be a symbol (Shamus: not sure why :-/)
+ if (*tok != 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;
+ }
+
+ j = (int)tok[2]; // Skip equates (normal statements)
+
+ if (j == '=' || j == DEQUALS || j == SET || j == REG || j == EQUREG || j == CCDEF)
+ {
+ equate = string[tok[1]];
+ equtyp = j;
+ tok += 3;
+ goto normal;
+ }
+
+ // Skip past label (but record it)
+ if (j == ':' || j == DCOLON)
+ {
+as68label:
+ label = string[tok[1]]; // Get label name
+ labtyp = tok[2]; // Get label type
+ tok += 3; // Go to next line token
+
+ // AS68 MODE:
+ // Looks like another label follows the previous one, so handle
+ // the previous one until there aren't any more
+ if (as68_flag && (*tok == SYMBOL && tok[2] == ':'))
+ {
+ if (HandleLabel(label, labtyp) != 0)
+ goto loop;
+
+ label_defined = label;
+
+ goto as68label;
+ }
+ }
+
+ // EOL is legal here...
+ if (*tok == EOL)
+ goto normal;
+
+ // First token MUST be a symbol (if we get here, tok didn't advance)
+ if (*tok++ != SYMBOL)
+ {
+ error("syntax error; expected symbol");
+ goto loop;
+ }
+
+ opname = p = string[*tok++];
+
+ // Check to see if the SYMBOL is a keyword (a mnemonic or directive).
+ // On output, `state' will have one of the values:
+ // -3 there was no symbol (EOL)
+ // -2..-1 the symbol didn't match any keyword
+ // 0..499 vanilla directives (dc, ds, etc.)
+ // 500..999 electric directives (macro, rept, etc.)
+ // 1000..+ mnemonics (move, lsr, etc.)
+ for(state=0; state>=0;)
+ {
+ j = mnbase[state] + (int)tolowertab[*p];
+
+ // Reject, character doesn't match
+ if (mncheck[j] != state)
+ {
+ state = -1; // No match
+ break;
+ }
+
+ // Must accept or reject at EOS
+ if (!*++p)
+ {
+ state = mnaccept[j]; // (-1 on no terminal match)
+ break;
+ }
+
+ state = mntab[j];
+ }
+
+ // Check for ".b" ".w" ".l" after directive, macro or mnemonic.
+ siz = SIZN;
+
+ 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)
+ {
+ switch (state)
+ {
+ case MN_IF:
+ d_if();
+ 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;
+
+ if (!(eattr & DEFINED))
+ {
+ error(undef_error);
+ goto loop;
+ }
+
+ if (*tok++ != ',')
+ {
+ error(comma_error);
+ goto loop;
+ }
+
+ if (eval == 0)
+ goto loop;
+
+ goto loop1;
+
+ case MN_MACRO: // .macro --- macro definition
+ if (!disabled)
+ {
+ // Label on a macro definition is bad mojo... Warn the user
+ if (label != NULL)
+ warn(lab_ignored);
+
+ DefineMacro();
+ }
+
+ goto loop;
+
+ case MN_EXITM: // .exitm --- exit macro
+ case MN_ENDM: // .endm --- same as .exitm
+ if (!disabled)
+ {
+ if (label != NULL)
+ warn(lab_ignored);
+
+ ExitMacro();
+ }
+
+ goto loop;
+
+ case MN_REPT:
+ if (!disabled)
+ {
+ // Handle labels on REPT directive lines...
+ if (label)
+ {
+ if (HandleLabel(label, labtyp) != 0)
+ goto loop;
+
+ label_defined = label;
+ }
+
+ HandleRept();
+ }
+
+ goto loop;
+
+ case MN_ENDR:
+ if (!disabled)
+ error("mis-nested .endr");
+
+ goto loop;
+ }
+ }
+
+normal:
+ if (disabled) // Conditionally disabled code
+ goto loop;
+
+ // Do equates
+ if (equate != NULL)
+ {
+ // Pick global or local symbol enviroment
+ j = (*equate == '.' ? curenv : 0);
+ sy = lookup(equate, LABEL, j);
+
+ if (sy == NULL)
+ {
+ sy = NewSymbol(equate, LABEL, j);
+ sy->sattr = 0;
+
+ if (equtyp == DEQUALS)
+ {
+ // Can't GLOBAL a local symbol
+ if (j)
+ {
+ error(locgl_error);
+ goto loop;
+ }
+
+ sy->sattr = GLOBAL;
+ }
+ }
+ else if ((sy->sattr & DEFINED) && equtyp != SET)
+ {
+ if ((equtyp == EQUREG) && (sy->sattre & UNDEF_EQUR))
+ {
+ sy->sattre &= ~UNDEF_EQUR;
+ sy->svalue = 0;
+ }
+ else if ((equtyp == CCDEF) && (sy->sattre & UNDEF_CC))
+ {
+ sy->sattre &= ~UNDEF_CC;
+ sy->svalue = 0;
+ }
+ else
+ {
+ error("multiple equate to '%s'", sy->sname);
+ goto loop;
+ }
+ }
+
+ // Put symbol in "order of definition" list if it's not already there
+ AddToSymbolDeclarationList(sy);
+
+ // Parse value to equate symbol to;
+ // o .equr
+ // o .reg
+ // o everything else
+ if (equtyp == EQUREG)
+ {
+//Linko's request to issue a warning on labels that equated to the same
+//register would go here. Not sure how to implement it though. :-/
+/*
+Maybe like this way:
+have an array of bools with 64 entries. Whenever a register is equated, set the
+corresponding register bool to true. Whenever it's undef'ed, set it to false.
+When checking to see if it's already been equated, issue a warning.
+*/
+ // Check that we are in a RISC section
+ if (!rgpu && !rdsp)
+ {
+ error(".equr/.regequ must be defined in .gpu/.dsp section");
+ goto loop;
+ }
+
+ // Check for register to equate to
+ if ((*tok >= KW_R0) && (*tok <= KW_R31))
+ {
+// sy->sattre = EQUATEDREG | RISCSYM; // Mark as equated register
+ sy->sattre = EQUATEDREG; // Mark as equated register
+ riscreg = (*tok - KW_R0);
+//is there any reason to do this, since we're putting this in svalue?
+//i'm thinking, no. Let's test that out! :-D
+// sy->sattre |= (riscreg << 8); // Store register number
+//everything seems to build fine without it... We'll leave it here Just In Case(tm)
+
+#define DEBODGE_REGBANK
+#ifdef DEBODGE_REGBANK
+ // Default is current state of "regbank"
+ registerbank = regbank;
+#else
+ // Default is no register bank specified
+ registerbank = BANK_N;
+#endif
+
+ // Check for ",<bank #>" override notation
+ if ((tok[1] == ',') && (tok[2] == CONST))
+ {
+ // Advance token pointer to the constant
+ tok += 3;
+
+ // Anything other than a 0 or a 1 will result in "No Bank"
+ if (*(uint64_t *)tok == 0)
+ registerbank = BANK_0;
+ else if (*(uint64_t *)tok == 1)
+ registerbank = BANK_1;
+
+ // Advance half-way through the 64-bit const.
+ // The code below, expecting a regular token,
+ // will advance past the second half.
+ tok++;
+ }
+
+#ifdef DEBODGE_REGBANK
+ sy->sattre |= registerbank; // Store register bank
+#else
+// What needs to happen here is to prime registerbank with regbank, then use
+// registerbank down below for the bank marking.
+#warning "!!! regbank <-> registerbank confusion here !!!"
+// The question here is why, if we're allowed to override the ".regbankN" rules
+// above, then why is it using the one set by the directive in the extended
+// attributes and not in what ends up in symbol->svalue?
+// ".regbankN" is not an original Madmac directive, so it's suspect
+ sy->sattre |= regbank; // Store register bank
+#endif
+ eattr = ABS | DEFINED | GLOBAL;
+ eval = riscreg;
+ tok++;
+ }
+ // Checking for a register symbol
+ else if (tok[0] == SYMBOL)
+ {
+ sy2 = lookup(string[tok[1]], LABEL, j);
+
+ // Make sure symbol is a valid equreg
+ if (!sy2 || !(sy2->sattre & EQUATEDREG))
+ {
+ error("invalid GPU/DSP .equr/.regequ definition");
+ goto loop;
+ }
+ else
+ {
+ eattr = ABS | DEFINED | GLOBAL; // Copy symbols attributes
+ sy->sattre = sy2->sattre;
+ eval = (sy2->svalue & 0xFFFFF0FF);
+ tok += 2;
+ }
+ }
+ else
+ {
+ error("invalid GPU/DSP .equr/.regequ definition");
+ goto loop;
+ }
+ }
+ else if (equtyp == REG)
+ {
+ if (reglist(&rmask) < 0)
+ goto loop;
+
+ eval = (uint32_t)rmask;
+ eattr = ABS | DEFINED;
+ }
+ else if (equtyp == CCDEF)
+ {
+ sy->sattre |= EQUATEDCC;
+ eattr = ABS | DEFINED | GLOBAL;
+
+ if (tok[0] == SYMBOL)
+ {
+ sy2 = lookup(string[tok[1]], LABEL, j);
+
+ if (!sy2 || !(sy2->sattre & EQUATEDCC))
+ {
+ error("invalid gpu/dsp .ccdef definition");
+ goto loop;
+ }
+ else
+ {
+ eattr = ABS | DEFINED | GLOBAL;
+ sy->sattre = sy2->sattre;
+ eval = sy2->svalue;
+ tok += 2;
+ }
+ }
+ else if (expr(exprbuf, &eval, &eattr, &esym) != OK)
+ goto loop;
+ }
+ // equ an equr
+ else if (*tok == SYMBOL)
+ {
+ sy2 = lookup(string[tok[1]], LABEL, j);
+
+ if (sy2 && (sy2->sattre & EQUATEDREG))
+ {
+ sy->stype = sy2->stype;
+ sy->sattr = sy2->sattr;
+ sy->sattre = sy2->sattre;
+ sy->svalue = sy2->svalue;
+ goto loop;
+ }
+ else if (expr(exprbuf, &eval, &eattr, &esym) != OK)
+ goto loop;
+ }
+ else if (expr(exprbuf, &eval, &eattr, &esym) != OK)
+ goto loop;
+
+ if (!(eattr & DEFINED))
+ {
+ error(undef_error);
+ goto loop;
+ }
+
+ sy->sattr |= eattr | EQUATED; // Symbol inherits value and attributes
+ sy->svalue = eval;
+
+ if (list_flag) // Put value in listing
+ listvalue((uint32_t)eval);
+
+ ErrorIfNotAtEOL(); // Must be at EOL now
+ goto loop;
+ }
+
+ // Do labels
+ if (label != NULL)
+ {
+ // Non-zero == error occurred
+ if (HandleLabel(label, labtyp) != 0)
+ goto loop;
+
+ label_defined = label;
+ }
+
+ // Punt on EOL
+ if (state == -3)
+ goto loop;
+
+ // If we're in 6502 mode and are still in need of a mnemonic, then search
+ // for valid 6502 mnemonic.
+ if (m6502 && (state < 0 || state >= 1000))
+ {
+#ifdef ST
+ state = kmatch(opname, mpbase, mpcheck, mptab, mpaccept);
+#else
+ for(state=0, p=opname; state>= 0; )
+ {
+ j = mpbase[state] + tolowertab[*p];
+
+ if (mpcheck[j] != state) // Reject, character doesn't match
+ {
+ state = -1; // No match
+ break;
+ }
+
+ if (!*++p)
+ { // Must accept or reject at EOS
+ state = mpaccept[j]; // (-1 on no terminal match)
+ break;
+ }
+
+ state = mptab[j];
+ }
+#endif
+
+ // Call 6502 code generator if we found a mnemonic
+ if (state >= 2000)
+ {
+ m6502cg(state - 2000);
+ goto loop;
+ }
+ }
+
+ // If we are in GPU or DSP mode and still in need of a mnemonic then search
+ // for one
+ if ((rgpu || rdsp) && (state < 0 || state >= 1000))
+ {
+ for(state=0, p=opname; state>=0;)
+ {
+ j = mrbase[state] + (int)tolowertab[*p];
+
+ // Reject, character doesn't match
+ if (mrcheck[j] != state)
+ {
+ state = -1; // No match
+ break;
+ }
+
+ // Must accept or reject at EOS
+ if (!*++p)
+ {
+ state = mraccept[j]; // (-1 on no terminal match)
+ break;
+ }
+
+ state = mrtab[j];
+ }
+
+ // Call RISC code generator if we found a mnemonic
+ if (state >= 3000)
+ {
+ GenerateRISCCode(state);
+ goto loop;
+ }
+ }
+
+ // If we are in OP mode and still in need of a mnemonic then search for one
+ if (robjproc && ((state < 0) || (state >= 1000)))
+ {
+ for(state=0, p=opname; state>=0;)
+ {
+ j = mobase[state] + (int)tolowertab[*p];
+
+ // Reject, character doesn't match
+ if (mocheck[j] != state)
+ {
+ state = -1; // No match
+ break;
+ }
+
+ // Must accept or reject at EOS
+ if (!*++p)
+ {
+ state = moaccept[j]; // (-1 on no terminal match)
+ break;
+ }
+
+ state = motab[j];
+ }
+
+ // Call OP code generator if we found a mnemonic
+ if (state >= 3100)
+ {
+ GenerateOPCode(state);
+ goto loop;
+ }
+ }
+
+ // If we are in 56K mode and still in need of a mnemonic then search for one
+ if (dsp56001 && ((state < 0) || (state >= 1000)))
+ {
+ for(state=0, p=opname; state>=0;)
+ {
+ j = dspbase[state] + (int)tolowertab[*p];
+
+ // Reject, character doesn't match
+ if (dspcheck[j] != state)
+ {
+ state = -1; // No match
+ break;
+ }
+
+ // Must accept or reject at EOS
+ if (!*++p)
+ {
+ state = dspaccept[j]; // (-1 on no terminal match)
+ break;
+ }
+
+ state = dsptab[j];
+ }
+
+ // Call DSP code generator if we found a mnemonic
+ if (state >= 2000)
+ {
+ LONG parcode;
+ int operands;
+ MNTABDSP * md = &dsp56k_machtab[state - 2000];
+ deposit_extra_ea = 0; // Assume no extra word needed
+
+ if (md->mnfunc == dsp_mult)
+ {
+ // Special case for multiplication instructions: they require
+ // 3 operands
+ if ((operands = dsp_amode(3)) == ERROR)
+ goto loop;
+ }
+ else if ((md->mnattr & PARMOVE) && md->mn0 != M_AM_NONE)
+ {
+ if (dsp_amode(2) == ERROR)
+ goto loop;
+ }
+ else if ((md->mnattr & PARMOVE) && md->mn0 == M_AM_NONE)
+ {
+ // Instructions that have parallel moves but use no operands
+ // (probably only move). In this case, don't parse addressing
+ // modes--just go straight to parallel parse
+ dsp_am0 = dsp_am1 = M_AM_NONE;
+ }
+ else
+ {
+ // Non parallel move instructions can have up to 4 parameters
+ // (well, only tcc instructions really)
+ if ((operands = dsp_amode(4)) == ERROR)
+ goto loop;
+
+ if (operands == 4)
+ {
+ dsp_tcc4(md->mninst);
+ goto loop;
+ }
+ }
+
+ if (md->mnattr & PARMOVE)
+ {
+ // Check for parallel moves
+ if ((parcode = parmoves(dsp_a1reg)) == ERROR)
+ goto loop;
+ }
+ else
+ {
+ if (*tok != EOL)
+ error("parallel moves not allowed with this instruction");
+
+ parcode = 0;
+ }
+
+ while ((dsp_am0 & md->mn0) == 0 || (dsp_am1 & md->mn1) == 0)
+ md = &dsp56k_machtab[md->mncont];
+
+ (*md->mnfunc)(md->mninst | (parcode << 8));
+ goto loop;
+ }
+ }
+
+ // Invoke macro or complain about bad mnemonic
+ if (state < 0)
+ {
+ if ((sy = lookup(opname, MACRO, 0)) != NULL)
+ InvokeMacro(sy, siz);
+ else
+ error("unknown op '%s'", opname);
+
+ goto loop;
+ }
+
+ // Call directive handlers
+ if (state < 500)
+ {
+ (*dirtab[state])(siz);
+ 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
+ if (scattr & SBSS)
+ {
+ error("cannot initialize non-storage (BSS) section");
+ goto loop;
+ }
+
+ if (sloc & 1) // Automatic .even
+ auto_even();
+
+ if (challoc - ch_size < 18) // Make sure have space in current chunk
+ chcheck(0);
+
+ m = &machtab[state - 1000];
+
+ // Call special-mode handler
+ if (m->mnattr & CGSPECIAL)
+ {
+ (*m->mnfunc)(m->mninst, siz);
+ goto loop;
+ }
+
+ if (amode(1) < 0) // Parse 0, 1 or 2 addr modes
+ goto loop;
+
+ // Check that we're at EOL
+ // The only exception is ptestr/ptestw instructions
+ // that have 3 or 4 operands and are not handled by
+ // amode(). (yes, we're taking a performance hit here sadly)
+ if (m->mnfunc != m_ptestr && m->mnfunc != m_ptestw)
+ if (*tok != EOL)
+ error(extra_stuff);
+
+ amsk0 = amsktab[am0];
+ amsk1 = amsktab[am1];
+
+ // Catch attempts to use ".B" with an address register (yes, this check
+ // does work at this level)
+ if (siz == SIZB && (am0 == AREG || am1 == AREG))
+ {
+ error("cannot use '.b' with an address register");
+ goto loop;
+ }
+
+ // Keep a backup of chptr (used for optimisations during codegen)
+ chptr_opcode = chptr;
+
+ while (!(m->mnattr & siz) || (amsk0 & m->mn0) == 0 || (amsk1 & m->mn1) == 0)
+ m = &machtab[m->mncont];
+
+ DEBUG { printf(" 68K: mninst=$%X, siz=$%X, mnattr=$%X, amsk0=$%X, mn0=$%X, amsk1=$%X, mn1=$%X\n", m->mninst, siz, m->mnattr, amsk0, m->mn0, amsk1, m->mn1); }
+
+ (*m->mnfunc)(m->mninst, siz);
+ goto loop;
+}
-int d_endif(void) {
- IFENT *rif;
-
- 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);
+//
+// Handle the creation of labels
+//
+int HandleLabel(char * label, int labelType)
+{
+ // Check for dot in front of label; means this is a local label if present
+ int environment = (*label == '.' ? curenv : 0);
+ SYM * symbol = lookup(label, LABEL, environment);
+
+ if (symbol == NULL)
+ {
+ symbol = NewSymbol(label, LABEL, environment);
+ symbol->sattr = 0;
+ symbol->sattre = 0;
+ }
+ else if (symbol->sattr & DEFINED)
+ return error("multiply-defined label '%s'", label);
+
+ // Put symbol in "order of definition" list if it's not already in it
+ AddToSymbolDeclarationList(symbol);
+
+ if (orgactive)
+ {
+ symbol->svalue = orgaddr;
+ symbol->sattr |= ABS | DEFINED | EQUATED;
+ }
+ else
+ {
+ symbol->svalue = sloc;
+ symbol->sattr |= DEFINED | cursect;
+ }
+
+ 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++;
+
+ // Make label global if it has a double colon
+ if (labelType == DCOLON)
+ {
+ if (environment != 0)
+ return error(locgl_error);
+
+ symbol->sattr |= GLOBAL;
+ }
+
+ return 0;
}
projects / rmac / blobdiff