//
// RMAC - Reboot's Macro Assembler for all Atari computers
// DIRECT.C - Directive Handling
-// Copyright (C) 199x Landon Dyer, 2011-2018 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
//
#include "direct.h"
#include "6502.h"
#include "amode.h"
+#include "dsp56k.h"
#include "error.h"
#include "expr.h"
#include "fltpoint.h"
int d_comm(void);
int d_dc(WORD);
int d_ds(WORD);
+int d_dsm(WORD);
int d_dcb(WORD);
int d_globl(void);
int d_gpu(void);
d_nofpu, // 65 nofpu
d_opt, // 66 .opt
d_objproc, // 67 .objproc
+ (void *)d_dsm, // 68 .dsm
};
{
uint64_t address;
- if (!rgpu && !rdsp && !robjproc && !m6502 && !dsp56001)
- return error(".org permitted only in GPU/DSP/OP, 56001 and 6502 sections");
+ if (!rgpu && !rdsp && !robjproc && !m6502 && !dsp56001 && !(obj_format == RAW))
+ return error(".org permitted only in GPU/DSP/OP, 56001, 6502 and 68k (with -fr switch) sections");
// M56K can leave the expression off the org for some reason :-/
- if ((abs_expr(&address) == ERROR) && !dsp56001)
+ // (It's because the expression is non-standard, and so we have to look at
+ // it in isolation)
+ if (!dsp56001 && (abs_expr(&address) == ERROR))
{
error("cannot determine org'd address");
return ERROR;
}
else if (dsp56001)
{
+ // Only mark segments we actually wrote something
+ if (chptr != dsp_currentorg->start && dsp_written_data_in_current_org)
+ {
+ dsp_currentorg->end = chptr;
+ dsp_currentorg++;
+ }
+
+ // Maybe we switched from a non-DSP section (TEXT, DATA, etc) and
+ // scode isn't initialised yet. Not that it's going to be a valid
+ // scenario, but if we try it anyhow it's going to lead to a crash. So
+ // let's fudge a value of 0 and get on with it.
+ orgaddr = (scode != NULL ? sloc : 0);
+ SaveSection();
+
+ if (tok[1] != ':')
+ return error(syntax_error);
+
+ int sectionToSwitch = 0;
+
+ switch (tok[0])
+ {
+ case KW_X:
+ dsp_currentorg->memtype = ORG_X;
+ sectionToSwitch = M56001X;
+ break;
+
+ case KW_Y:
+ dsp_currentorg->memtype = ORG_Y;
+ sectionToSwitch = M56001Y;
+ break;
+
+ case KW_P:
+ dsp_currentorg->memtype = ORG_P;
+ sectionToSwitch = M56001P;
+ break;
+
+ case KW_L:
+ dsp_currentorg->memtype = ORG_L;
+ sectionToSwitch = M56001L;
+ break;
+
+ default:
+ return error("unknown type in ORG");
+ }
+
+ if ((obj_format == LOD) || (obj_format == P56))
+ SwitchSection(sectionToSwitch);
+
+ tok += 2;
+ chcheck(3); // Ensure we got a valid address to write
+ dsp_currentorg->chunk = scode; // Mark down which chunk this org starts from (will be needed when outputting)
+
+ if (*tok == EOL)
+ {
+ // Well, the user didn't specify an address at all so we'll have to
+ // use the last used address of that section (or 0 if there wasn't one)
+ address = orgaddr;
+ dsp_currentorg->start = chptr;
+ dsp_currentorg->orgadr = orgaddr;
+ }
+ else
+ {
+ if (abs_expr(&address) == ERROR)
+ {
+ error("cannot determine org'd address");
+ return ERROR;
+ }
+
+ dsp_currentorg->start = chptr;
+ dsp_currentorg->orgadr = (uint32_t)address;
+ sect[cursect].orgaddr = (uint32_t)address;
+ }
+
+ if (address > DSP_MAX_RAM)
+ {
+ return error(range_error);
+ }
+
+ dsp_written_data_in_current_org = 0;
+
+ // Copied from 6502 above: kludge `lsloc' so the listing generator
+ // doesn't try to spew out megabytes.
+ lsloc = sloc = (int32_t)address;
+// N.B.: It seems that by enabling this, even though it works elsewhere, will cause symbols to royally fuck up. Will have to do some digging to figure out why.
+// orgactive = 1;
}
+ else
+ {
+ // If we get here we assume it's 68k with RAW output, so this is allowed
+ if (orgactive)
+ {
+ return error("In 68k mode only one .org statement is allowed");
+ }
- at_eol();
+ org68k_address = address;
+ org68k_active = 1;
+ }
+
+ ErrorIfNotAtEOL();
return 0;
}
while (*tok != EOL)
{
- switch(*tok)
+ switch (*tok)
{
case STRING:
sprintf(prntstr, "%s", string[tok[1]]);
{
strcpy(prntstr, string[tok[2]]);
- switch(prntstr[0])
+ switch (prntstr[0])
{
case 'l': case 'L': wordlong = 1; break;
case 'w': case 'W': wordlong = 0; break;
//
-// Include binary file
+// Include binary file (can add addition size & position params, comma separated)
//
int d_incbin(void)
{
int fd;
int bytes = 0;
- long pos, size, bytesRead;
+ uint64_t pos, size, bytesRead;
char buf1[256];
int i;
// 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)
+ TOKEN filename = tok[1];
+
+ if ((fd = open(string[filename], _OPEN_INC)) < 0)
{
for(i=0; nthpath("RMACPATH", i, buf1)!=0; i++)
{
if (fd > 0 && buf1[fd - 1] != SLASHCHAR)
strcat(buf1, SLASHSTRING);
- strcat(buf1, string[tok[1]]);
+ strcat(buf1, string[filename]);
if ((fd = open(buf1, _OPEN_INC)) >= 0)
goto allright;
}
- return error("cannot open: \"%s\"", string[tok[1]]);
+ return error("cannot open: \"%s\"", string[filename]);
}
allright:
- size = lseek(fd, 0L, SEEK_END);
- pos = lseek(fd, 0L, SEEK_SET);
+ tok += 2;
+
+ if (*tok != EOL)
+ {
+ // Check size parameter (can be omitted)
+ if (*tok++ == ',')
+ {
+ if (*tok != ',')
+ {
+ if (abs_expr(&size) != OK)
+ {
+ close(fd);
+ return ERROR;
+ }
+ }
+ else
+ size = lseek(fd, 0L, SEEK_END);
+ }
+
+ // Check offset parameter (can be omitted)
+ if (*tok != EOL)
+ {
+ if (*tok++ == ',')
+ {
+ if (*tok != EOL)
+ {
+ if (abs_expr(&pos) != OK)
+ {
+ close(fd);
+ return ERROR;
+ }
+
+ lseek(fd, pos, SEEK_SET);
+ size -= pos;
+ }
+ else
+ {
+ // offset parameter omitted, so it's 0
+ pos = lseek(fd, 0L, SEEK_SET);
+ }
+ }
+ else
+ return error(comma_error);
+ }
+ else
+ pos = lseek(fd, 0L, SEEK_SET);
+ }
+ else
+ {
+ // size & pos not given, so assume offset of 0 and all of the binary
+ size = lseek(fd, 0L, SEEK_END);
+ pos = lseek(fd, 0L, SEEK_SET);
+ }
+
chcheck(size);
- DEBUG { printf("INCBIN: File '%s' is %li bytes.\n", string[tok[1]], size); }
+ DEBUG { printf("INCBIN: File '%s' is %li bytes.\n", string[filename], size); }
char * fileBuffer = (char *)malloc(size);
bytesRead = read(fd, fileBuffer, size);
if (bytesRead != size)
{
- error("was only able to read %li bytes from binary file (%s, %li bytes)", bytesRead, string[tok[1]], size);
+ error("was only able to read %li bytes from binary file (%s, %li bytes)", bytesRead, string[filename], size);
return ERROR;
}
break;
}
- at_eol();
+ ErrorIfNotAtEOL();
return 0;
}
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)
- // 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");
+ // that?--nobody does; it's the code gremlins, or rum, what does it)
+ // N.B.: Since 'eval' is of type uint64_t, if it goes negative, it will
+ // have its high bit set.
+ if (eval & 0x8000000000000000)
+ return error("negative sizes not allowed in DS");
// In non-TDB section (BSS, ABS and M6502) just advance the location
// counter appropriately. In TDB sections, deposit (possibly large) chunks
just_bss = 1; // No data deposited (8-bit CPU mode)
}
+ else if (cursect & M56KPXYL)
+ {
+ // Change segment instead of marking blanks.
+ // Only mark segments we actually wrote something
+ if (chptr != dsp_currentorg->start && dsp_written_data_in_current_org)
+ {
+ dsp_currentorg->end = chptr;
+ dsp_currentorg++;
+ dsp_currentorg->memtype = dsp_currentorg[-1].memtype;
+ }
+
+ listvalue((uint32_t)eval);
+ sloc += (uint32_t)eval;
+
+ // And now let's create a new segment
+ dsp_currentorg->start = chptr;
+ dsp_currentorg->chunk = scode; // Mark down which chunk this org starts from (will be needed when outputting)
+ sect[cursect].orgaddr = sloc;
+ dsp_currentorg->orgadr = sloc;
+ dsp_written_data_in_current_org = 0;
+
+ just_bss = 1; // No data deposited
+ }
else
{
- dep_block(eval, siz, 0, (WORD)(DEFINED | ABS), NULL);
+ dep_block(eval, siz, 0, (DEFINED | ABS), NULL);
}
- at_eol();
- return 0;
+ ErrorIfNotAtEOL();
+ return OK;
}
//
-// dc.b, dc.w / dc, dc.l, dc.i, dc.q, dc.d
+// dsm[.siz] expression
+// Define modulo storage
+// Quoting the Motorola assembler manual:
+// "The DSM directive reserves a block of memory the length of which in words is equal to
+// the value of <expression>.If the runtime location counter is not zero, this directive first
+// advances the runtime location counter to a base address that is a multiple of 2k, where
+// 2k >= <expression>."
+// The kicker of course is written a few sentences after:
+// "<label>, if present, will be assigned the value of the runtime location counter after a valid
+// base address has been established."
+//
+int d_dsm(WORD siz)
+{
+ TOKEN * tok_current = tok; // Keep track of where tok was when we entered this procedure
+ uint64_t eval;
+
+ if (abs_expr(&eval) != OK)
+ return 0;
+
+ // Round up to the next highest power of 2
+ // Nicked from https://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
+ eval--;
+ eval |= eval >> 1;
+ eval |= eval >> 2;
+ eval |= eval >> 4;
+ eval |= eval >> 8;
+ eval |= eval >> 16;
+
+ int units_to_skip;
+ units_to_skip = eval + 1 - sloc;
+ sloc += units_to_skip; // Bump up sloc - TODO: check if this goes over the RAM limits?
+
+ // If a label has been defined in the same line as dsm, its value also needs to be adjusted
+ if (label_defined)
+ {
+ SYM * label = lookup(label_defined, LABEL, 0);
+ label->svalue += units_to_skip;
+ }
+
+ tok = tok_current; // Rewind tok back to where it was
+ return d_ds(siz); // And let d_ds take over from here
+}
+
+
+//
+// dc.b, dc.w / dc, dc.l, dc.i, dc.q, dc.d, dc.s, dc.x
//
int d_dc(WORD siz)
{
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))
+ if ((cursect != M6502) && (cursect != M56001P) && (cursect != M56001X)
+ && (cursect != M56001Y) && (cursect != M56001L)
+ && (siz != SIZB) && (sloc & 1))
auto_even();
// Check to see if we're trying to set LONGS on a non 32-bit aligned
uint16_t tdb = eattr & TDB;
uint16_t defined = eattr & DEFINED;
+// N.B.: This is awful. This needs better handling, rather than just bodging something in that, while works, is basically an ugly wart on the assembler. !!! FIX !!!
+ if (dsp56001)
+ {
+ if (cursect != M56001L)
+ {
+ if (!defined)
+ {
+ AddFixup(FU_DSPIMM24 | FU_SEXT, sloc, exprbuf);
+ D_dsp(0);
+ }
+ else
+ {
+ if (eattr & FLOAT)
+ {
+ double fval = *(double *)&eval;
+ eval = DoubleToDSPFloat(fval);
+ }
+ else
+ {
+ if ((uint32_t)eval + 0x1000000 >= 0x2000000)
+ return error(range_error);
+ }
+
+ // Deposit DSP word (24-bit)
+ D_dsp(eval);
+ }
+ }
+ else
+ {
+ // In L: we deposit stuff to both X: and Y: instead
+ // We will be a bit lazy and require that there is a 2nd value
+ // in the same source line. (Motorola's assembler can parse
+ // 12-digit hex values, which we can't do at the moment) This
+ // of course requires to parse 2 values in one pass. If there
+ // isn't another value in this line, assume X: value is 0.
+ int secondword = 0;
+ uint32_t evaly;
+l_parse_loop:
+
+ if (!defined)
+ {
+ AddFixup(FU_DSPIMM24 | FU_SEXT, sloc, exprbuf);
+ D_dsp(0);
+ }
+ else
+ {
+ if (eattr & FLOAT)
+ {
+ float fval = *(float *)&eval;
+ eval = DoubleToDSPFloat(fval);
+ }
+ else
+ {
+ if (eval + 0x1000000 >= 0x2000000)
+ return error(range_error);
+ }
+
+ // Parse 2nd value if we didn't do this yet
+ if (secondword == 0)
+ {
+ evaly = (uint32_t)eval;
+ secondword = 1;
+
+ if (*tok != ':')
+ {
+ // If we don't have a : then we're probably at EOL,
+ // which means the X: value will be 0
+ eval = 0;
+ ErrorIfNotAtEOL();
+ }
+ else
+ {
+ tok++; // Eat the comma;
+
+ if (expr(exprbuf, &eval, &eattr, NULL) != OK)
+ return 0;
+
+ defined = (WORD)(eattr & DEFINED);
+ goto l_parse_loop;
+ }
+ }
+
+ // Deposit DSP words (24-bit)
+ D_dsp(eval);
+ D_dsp(evaly);
+ sloc--; // We do write 2 DSP words but as far as L: space is concerned we actually advance our counter by one
+ }
+
+ }
+
+ goto comma;
+ }
+
switch (siz)
{
case SIZB:
}
break;
+
case SIZW:
case SIZN:
if (!defined)
}
break;
+
case SIZL:
// Shamus: Why can't we do longs in 6502 mode?
if (m6502)
if (!defined)
{
- if (movei)
- AddFixup(FU_LONG | FU_MOVEI, sloc, exprbuf);
- else
- AddFixup(FU_LONG, sloc, exprbuf);
-
+ AddFixup(FU_LONG | (movei ? FU_MOVEI : 0), sloc, exprbuf);
D_long(0);
}
else
}
break;
+
case SIZQ:
// 64-bit size
if (m6502)
return error(in_6502mode);
- // Shamus: We only handle DC.Q type stuff, will have to add fixups
- // and stuff later (maybe... might not be needed...)
// DEFINITELY NEED FIXUPS HERE!
if (!defined)
{
AddFixup(FU_QUAD, sloc, exprbuf);
- D_quad(0LL);
- }
- else
- {
- D_quad(eval);
+ eval = 0;
}
+ D_quad(eval);
break;
+
case SIZS:
// 32-bit float size
if (m6502)
return error(in_6502mode);
+/* Seems to me that if something is undefined here, then that should be an error. Likewise for the D & X variants. */
if (!defined)
{
- AddFixup(FU_FLOATSING, sloc, exprbuf);
- D_long(0);
+// AddFixup(FU_FLOATSING, sloc, exprbuf);
+// D_long(0);
+ return error("labels not allowed in floating point expressions");
}
else
{
}
break;
+
case SIZD:
// 64-bit double size
if (m6502)
if (!defined)
{
- AddFixup(FU_FLOATDOUB, sloc, exprbuf);
- D_quad(0LL);
+// AddFixup(FU_FLOATDOUB, sloc, exprbuf);
+// D_quad(0LL);
+ return error("labels not allowed in floating point expressions");
}
else
{
}
break;
+
case SIZX:
if (m6502)
return error(in_6502mode);
if (!defined)
{
- AddFixup(FU_FLOATEXT, sloc, exprbuf);
- D_extend(extDbl);
+// AddFixup(FU_FLOATEXT, sloc, exprbuf);
+// D_extend(extDbl);
+ return error("labels not allowed in floating point expressions");
}
else
{
break;
}
- at_eol();
+ ErrorIfNotAtEOL();
return 0;
}
//
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);
+ WORD tdb = eattr & TDB;
+ WORD defined = eattr & DEFINED;
while (count--)
{
return 0;
sym->svalue = eval; // Install common symbol's size
- at_eol();
+ ErrorIfNotAtEOL();
return 0;
}
rgpu = rdsp = robjproc = 0;
SaveSection();
- if (obj_format == LOD || obj_format == P56)
+ if ((obj_format == LOD) || (obj_format == P56))
SwitchSection(M56001P);
return 0;
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