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Make RGBLINK able to link SDCC object files

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This requires a LOT of tricky code, mostly due to the format itself being,
er, not the most straightforward.
Everything is converted to existing RGBLINK concepts (sections, patches,
etc.), so the core code is essentially unchanged.
(A couple of genuine RGBLINK bugs were uncovered along the way, so some of
the core code *is* changed, notably regarding `SECTION FRAGMENT`s.)

All of this code was clean-roomed, so SDCC's GPLv2 license does not apply.
This commit is contained in:
ISSOtm
2022-07-10 10:50:33 +02:00
committed by Eldred Habert
parent 1c2965467d
commit 828b2adcdf
16 changed files with 922 additions and 71 deletions
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4
src/link/output.c
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@@ -9,6 +9,7 @@
#include <assert.h>
#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "link/output.h"
@@ -199,6 +200,7 @@ static void writeBank(struct SortedSection *bankSections, uint16_t baseOffset,
while (bankSections) {
struct Section const *section = bankSections->section;
assert(section->offset == 0);
/* Output padding up to the next SECTION */
while (offset + baseOffset < section->org) {
putc(overlayFile ? getc(overlayFile) : padValue,
@@ -381,6 +383,7 @@ static uint16_t writeMapBank(struct SortedSections const *sectList,
used += sect->size;
assert(sect->offset == 0);
if (sect->size != 0)
fprintf(mapFile, " SECTION: $%04" PRIx16 "-$%04x ($%04" PRIx16
" byte%s) [\"%s\"]\n",
@@ -394,6 +397,7 @@ static uint16_t writeMapBank(struct SortedSections const *sectList,
uint16_t org = sect->org;
while (sect) {
fprintf(mapFile, " ; New %s\n", sect->modifier == SECTION_FRAGMENT ? "fragment": "union");
for (size_t i = 0; i < sect->nbSymbols; i++)
fprintf(mapFile, " $%04" PRIx32 " = %s\n",
sect->symbols[i]->offset + org,