// SECT.C - Code Generation, Fixups and Section Management
// 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 "sect.h"
MakeSection(i, 0);
// Construct default sections, make TEXT the current section
- MakeSection(ABS, SUSED | SABS | SBSS); // ABS
- MakeSection(TEXT, SUSED | TEXT ); // TEXT
- MakeSection(DATA, SUSED | DATA ); // DATA
- MakeSection(BSS, SUSED | BSS | SBSS); // BSS
+ MakeSection(ABS, SUSED | SABS | SBSS); // ABS
+ MakeSection(TEXT, SUSED | TEXT ); // TEXT
+ MakeSection(DATA, SUSED | DATA ); // DATA
+ MakeSection(BSS, SUSED | BSS | SBSS); // BSS
// MakeSection(M6502, SUSED | TEXT ); // 6502 code section
// Switch to TEXT for starters
SECT * p;
// Shamus: Expression lengths are voodoo ATM (variable "i"). Need to fix
// this.
-#warning "!!! AddFixup() is filled with VOODOO !!!"
+WARNING(!!! AddFixup() is filled with VOODOO !!!)
DEBUG printf("FIXUP@$%X: $%X\n", loc, attr);
// Compute length of expression (could be faster); determine if it's the
// NYAN !
if ((attr & FUMASKRISC) == FU_JR)
{
+//printf("AddFixup: ((attr & FUMASKRISC) == FU_JR)\n");
// i = 18;
// i = FIXUP_BASE_SIZE + (sizeof(LONG) * 2);
i = FIXUP_BASE_SIZE + sizeof(SYM *) + sizeof(LONG);
}
else
{
+//printf("AddFixup: ((attr & FUMASKRISC) == FU_JR) ELSE\n");
// i = 14;
i = FIXUP_BASE_SIZE + sizeof(SYM *);
}
}
else
{
+//printf("AddFixup: !SYMBOL\n");
attr |= FU_EXPR;
for(len=0; fexpr[len]!=ENDEXPR; len++)
i = FIXUP_BASE_SIZE + sizeof(WORD) + (len * sizeof(TOKEN));
}
- // Maybe alloc another fixup chunk for this one to fit in
+ // Alloc another fixup chunk for this one to fit in if necessary
if ((fchalloc - fchsize) < i)
{
p = §[cursect];
{
// *fchptr.lp++ = (LONG)fexpr[1];
*fchptr.sy++ = symbolPtr[fexpr[1]];
+//printf("AddFixup: adding symbol (%s) [%08X]\n", symbolPtr[fexpr[1]]->sname, symbolPtr[fexpr[1]]->sattr);
}
// SCPCD : correct bit mask for attr (else other FU_xxx will match) NYAN !
}
-//
-// Resolve all fixups
-//
-int ResolveAllFixups(void)
-{
- unsigned i;
- char buf[EBUFSIZ];
-
- // Make undefined symbols GLOBL
- if (glob_flag)
- ForceUndefinedSymbolsGlobal();
-
- DEBUG printf("Resolving TEXT sections...\n");
- ResolveFixups(TEXT);
- DEBUG printf("Resolving DATA sections...\n");
- ResolveFixups(DATA);
-
- return 0;
-}
-
-
//
// Resolve fixups in a section
//
int ResolveFixups(int sno)
{
- PTR fup; // Current fixup
- WORD * fuend; // End of last fixup (in this chunk)
- WORD w; // Fixup word (type+modes+flags)
- char * locp; // Location to fix (in cached chunk)
- LONG loc; // Location to fixup
- VALUE eval; // Expression value
- WORD eattr; // Expression attrib
- SYM * esym; // External symbol involved in expr
- SYM * sy; // (Temp) pointer to a symbol
- WORD i; // (Temp) word
- WORD tdb; // eattr & TDB
+ PTR fup; // Current fixup
+ WORD * fuend; // End of last fixup (in this chunk)
+ WORD w; // Fixup word (type+modes+flags)
+ char * locp; // Location to fix (in cached chunk)
+ LONG loc; // Location to fixup
+ VALUE eval; // Expression value
+ WORD eattr; // Expression attrib
+ SYM * esym; // External symbol involved in expr
+ SYM * sy; // (Temp) pointer to a symbol
+ WORD i; // (Temp) word
+ WORD tdb; // eattr & TDB
LONG oaddr;
int reg2;
WORD flags;
unsigned page_jump = 0;
unsigned address = 0;
- unsigned j;
- char buf[EBUFSIZ];
+ //unsigned j;
+ //char buf[EBUFSIZ];
SECT * sc = §[sno];
CHUNK * ch = sc->sffix;
else
reg2 = (signed)((eval - (loc + 2)) / 2);// & 0x1F;
-#if 0
- if ((w & 0x0F00) == FU_MJR)
- {
- // Main code destination alignment checking here for
- // forward declared labels
- address = (oaddr) ? oaddr : loc;
-
- if (((address >= 0xF03000) && (address < 0xF04000)
- && (eval < 0xF03000)) || ((eval >= 0xF03000)
- && (eval < 0xF04000) && (address < 0xF03000)))
- {
- warni("* \'jr\' at $%08X - cannot jump relative between "
- "main memory and local gpu ram", address);
- }
- else
- {
- page_jump = (address & 0xFFFFFF00) - (eval & 0xFFFFFF00);
-
- if (page_jump)
- {
- // This jump is to a page outside of the
- // current 256 byte page
- if (eval % 4)
- {
- warni("* \'jr\' at $%08X - destination address not aligned for long page jump, insert a \'nop\' before the destination address", address);
- }
- }
- else
- {
- // This jump is in the current 256 byte page
- if ((eval - 2) % 4)
- {
- warni("* \'jr\' at $%08X - destination address not aligned for short page jump, insert a \'nop\' before the destination address", address);
- }
- }
- }
- }
-#endif
-
if ((reg2 < -16) || (reg2 > 15))
{
error("relative jump out of range");
case FU_LONG:
if ((w & FUMASKRISC) == FU_MOVEI)
{
-#if 0
- address = loc + 4;
-
- if (eattr & DEFINED)
- {
- for(j=0; j<fwindex; j++)
- {
- if (fwdjump[j] == address)
- {
- page_jump = (address & 0xFFFFFF00) - (eval & 0xFFFFFF00);
-
- if (page_jump)
- {
- if (eval % 4)
- {
- err_setup();
- sprintf(buf, "* \'jump\' at $%08X - destination address not aligned for long page jump, insert a \'nop\' before the destination address", address);
-
- if (listing > 0)
- ship_ln(buf);
-
- if (err_flag)
- write(err_fd, buf, (LONG)strlen(buf));
- else
- printf("%s\n", buf);
- }
- }
- else
- {
- if (!(eval & 0x0000000F) || ((eval - 2) % 4))
- {
- err_setup();
- sprintf(buf, "* \'jump\' at $%08X - destination address not aligned for short page jump, insert a \'nop\' before the destination address", address);
-
- if (listing > 0)
- ship_ln(buf);
-
- if (err_flag)
- write(err_fd, buf, (LONG)strlen(buf));
- else
- printf("%s\n", buf);
- }
- }
-
- // Clear this jump as it has been checked
- fwdjump[j] = 0;
- j = fwindex;
- }
- }
- }
-#endif
-
// Long constant in MOVEI # is word-swapped, so fix it here
eval = ((eval >> 16) & 0x0000FFFF) | ((eval << 16) & 0xFFFF0000);
flags = (MLONG | MMOVEI);
break;
default:
- interror(4); // Bad fixup type
+ // Bad fixup type--this should *never* happen!
+ interror(4);
// NOTREACHED
}
continue;
return 0;
}
+//
+// Resolve all fixups
+//
+int ResolveAllFixups(void)
+{
+ //unsigned i;
+ //char buf[EBUFSIZ];
+
+ // Make undefined symbols GLOBL
+ if (glob_flag)
+ ForceUndefinedSymbolsGlobal();
+
+ DEBUG printf("Resolving TEXT sections...\n");
+ ResolveFixups(TEXT);
+ DEBUG printf("Resolving DATA sections...\n");
+ ResolveFixups(DATA);
+
+ return 0;
+}
+
+
projects / rmac / blobdiff