// DIRECT.C - Directive Handling
// Copyright (C) 199x Landon Dyer, 2011 Reboot and Friends
// RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
-// Source Utilised with the Kind Permission of Landon Dyer
+// Source utilised with the kind permission of Landon Dyer
//
#include "direct.h"
#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
// Directive handler table
d_org, // 0 org
d_even, // 1 even
d_unimpl, // 2 .6502
- d_68000, // 3 .68000
+ 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_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
- 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
+ (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_unimpl, // 47 error
- d_unimpl, // 48 warn
+ 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_jpad, // 54 .jpad (deprecated)
d_nojpad, // 55 .nojpad (deprecated)
d_gpumain, // 56 .gpumain (deprecated)
+ d_prgflags, // 57 .prgflags
+ d_opt, // 58 .opt
};
+//
+// .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 assembling");
+ }
+ }
+}
+
+
+//
+// .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");
+ }
+ }
+}
+
+
//
// .org - Set origin
//
//
-// Print Directive
+// 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.
+ 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]);
sprintf(prntstr, "%s", string[tok[1]]);
printf("%s", prntstr);
}
printf("\n");
-// println("\n");
return 0;
//
-// Undefine an Equated Condition Code
+// Undefine an equated condition code
//
int d_ccundef(void)
{
if (*tok != SYMBOL)
{
-// error(syntax_error);
error("syntax error; expected symbol");
return ERROR;
}
-// ccname = lookup((char *)tok[1], LABEL, 0);
ccname = lookup(string[tok[1]], LABEL, 0);
// Make sure symbol is a valid ccdef
//
-// Undefine an Equated Register
+// Undefine an equated register
//
int d_equrundef(void)
{
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;
+ }
// Skip over symbol token and address
tok += 2;
//
-// Do Not Allow the Use of the CLR.L Opcode
+// Do not allow use of the CLR.L opcode
//
int d_noclear(void)
{
+ warn("CLR.L opcode ignored...");
return 0;
}
//
-// Include Binary File
+// Include binary file
//
int d_incbin(void)
{
int bytes = 0;
long pos, size, bytesRead;
char msg[256];
+ char buf1[256];
+ int i;
// Check to see if we're in BSS, and, if so, throw an error
if (scattr & SBSS)
return ERROR;
}
- if ((fd = open(string[tok[1]], _OPEN_INC)) < 0)
+ // 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)
{
- errors("cannot open include binary file (%s)", string[tok[1]]);
- return ERROR;
+ for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
+ {
+ fd = strlen(buf1);
+
+ // Append path char if necessary
+ if (fd > 0 && buf1[fd - 1] != SLASHCHAR)
+ strcat(buf1, SLASHSTRING);
+
+ strcat(buf1, string[tok[1]]);
+
+ if ((fd = open(buf1, _OPEN_INC)) >= 0)
+ goto allright;
+ }
+
+ return errors("cannot open: \"%s\"", string[tok[1]]);
}
+allright:
+
size = lseek(fd, 0L, SEEK_END);
pos = lseek(fd, 0L, SEEK_SET);
chcheck(size);
//
-// Set RISC Register Banks
+// Set RISC register banks
//
int d_regbank0(void)
{
//
-// Adjust Location to an EVEN Value
+// Adjust location to an EVEN value
//
int d_even(void)
{
unsigned skip = (rgpu || rdsp ? orgaddr : sloc) & 0x01;
-// if (sloc & 1)
if (skip)
{
if ((scattr & SBSS) == 0)
//
-// Adjust Location to an LONG Value
+// Adjust location to a LONG value
//
int d_long(void)
{
//
-// Adjust Location to an PHRASE Value
+// Adjust location to a PHRASE 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
//
-// Adjust Location to an DPHRASE Value
+// Adjust location to a DPHRASE value
//
int d_dphrase(void)
{
//
-// Adjust Location to an QPHRASE Value
+// Adjust location to a QPHRASE value
//
int d_qphrase(void)
{
void auto_even(void)
{
if (scattr & SBSS)
- sloc++; // Bump BSS section
+ sloc++; // Bump BSS section
else
- D_byte(0); // Deposit 0.b in non-BSS
+ D_byte(0); // Deposit 0.b in non-BSS
- if (lab_sym != NULL) // Bump label if we have to
- ++lab_sym->svalue;
+ if (lab_sym != NULL) // Bump label if we have to
+ lab_sym->svalue++;
}
//
-// Unimplemened Directive Error
+// Unimplemened directive error
//
int d_unimpl(void)
{
char buf[128];
char buf1[128];
- if (*tok == STRING) // Leave strings ALONE
-#if 0
- fn = (char *)*++tok;
-#else
+ if (*tok == STRING) // Leave strings ALONE
fn = string[*++tok];
-#endif
- else if (*tok == SYMBOL) // Try to append ".s" to symbols
+ else if (*tok == SYMBOL) // Try to append ".s" to symbols
{
-#if 0
- strcpy(buf, (char *)*++tok);
-#else
strcpy(buf, string[*++tok]);
-#endif
fext(buf, ".s", 0);
fn = &buf[0];
}
- else // Punt if no STRING or SYMBOL
+ else // Punt if no STRING or SYMBOL
return error("missing filename");
// Make sure the user didn't try anything like:
}
+//
+// .prgflags expression
+//
+int d_prgflags(void)
+{
+ VALUE eval;
+
+ if (*tok == EOL)
+ return error("PRGFLAGS requires value");
+ else if (abs_expr(&eval) == OK)
+ {
+ PRGFLAGS=eval;
+ return 0;
+ }
+ else
+ {
+ return error("PRGFLAGS requires value");
+ }
+}
+
+
//
// .abs [expression]
//
//
-// Switch Segments
+// Switch segments
//
-
int d_text(void)
{
if (rgpu || rdsp)
//
int d_ds(WORD siz)
{
-if (verb_flag)
- printf("Directive: .ds.[size] = %u, sloc = $%X\n", siz, sloc);
+ DEBUG { printf("Directive: .ds.[size] = %u, sloc = $%X\n", siz, sloc); }
VALUE eval;
if (abs_expr(&eval) != OK)
return 0;
+ // 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)
+ if (eval < 0)
+ return error("negative sizes not allowed");
+
// In non-TDB section (BSS, ABS and M6502) just advance the location
// counter appropriately. In TDB sections, deposit (possibly large) chunks
- //of zeroed memory....
+ // of zeroed memory....
if (scattr & SBSS)
{
listvalue(eval);
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 ((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[2] == ',' || tok[2] == EOL))
{
-// i = strlen((const char*)tok[1]);
i = strlen(string[tok[1]]);
if ((challoc - ch_size) < i)
return error("non-absolute byte value");
if (eval + 0x100 >= 0x200)
- return error(range_error);
+ {
+ sprintf(buffer, "%s (value = $%X)", range_error, eval);
+ return error(buffer);
+ }
D_byte(eval);
}
VALUE evalc, eval;
WORD eattr;
+ DEBUG { printf("dcb: section is %s%s%s (scattr=$%X)\n", (cursect & TEXT ? "TEXT" : ""), (cursect & DATA ? " DATA" : ""), (cursect & BSS ? "BSS" : ""), scattr); }
+
if ((scattr & SBSS) != 0)
return error("illegal initialization of section");
if (*tok != SYMBOL)
return error("missing symbol");
-// p = (char *)tok[1];
p = string[tok[1]];
tok += 2;
//
-// .gpu - Switch to GPU Assembler
+// .gpu - Switch to GPU assembler
//
int d_gpu(void)
{
//
-// .dsp - Switch to DSP Assembler
+// .dsp - Switch to DSP assembler
//
int d_dsp(void)
{
{
if (*tok == SYMBOL)
{
-// p = (char *)tok[1];
p = string[tok[1]];
-#if 0
- if (*p == '.')
- env = curenv; // Label is local
- else
- env = 0; // Label is global
-#else
// Set env to either local (dot prefixed) or global scope
env = (*p == '.' ? curenv : 0);
-#endif
symbol = lookup(p, LABEL, env);
if (symbol == NULL)
return errors("multiply-defined label '%s'", p);
// Put symbol in "order of definition" list
- if (!(symbol->sattr & SDECLLIST))
- AddToSymbolOrderList(symbol);
+ AddToSymbolDeclarationList(symbol);
symbol->sattr |= (ABS | DEFINED | EQUATED);
symbol->svalue = eval;
if (reglist(&rlist) < 0)
return 0;
-// for(i=0; i++<16; rlist>>=1)
for(i=0; i<16; i++, rlist>>=1)
{
if (rlist & 1)
return errors("multiply-defined label '%s'", symbolName);
// Put symbol in "order of definition" list
- if (!(symbol->sattr & SDECLLIST))
- AddToSymbolOrderList(symbol);
+ AddToSymbolDeclarationList(symbol);
tok += 2;
return error("What the hell? Do you think we adhere to the Goof standard?");
}
+
+//
+// .opt - turn a specific (or all) optimisation on or off
+//
+int d_opt(void)
+{
+ while (*tok != EOL)
+ {
+ if (*tok == STRING)
+ {
+ tok++;
+ char * tmpstr = string[*tok++];
+
+ if (ParseOptimization(tmpstr) != OK)
+ {
+ char temperr[256];
+ sprintf(temperr, "unknown optimisation flag '%s'", tmpstr);
+ return error(temperr);
+ }
+ }
+ else
+ return error(".opt directive needs every switch enclosed inside quotation marks");
+ }
+
+ return OK;
+}
+