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Fixes #517, and hopefully enables RGBDS as a SDCC back-end
This commit is contained in:
ISSOtm
2020-07-21 19:53:40 +02:00
parent aca00e4fce
commit 1f2f797cb9
17 changed files with 174 additions and 50 deletions
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10
src/link/patch.c
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@@ -421,7 +421,7 @@ void patch_CheckAssertions(struct Assertion *assert)
* @param section The section to patch
* @param arg Ignored callback arg
*/
static void applyFilePatches(struct Section *section)
static void applyFilePatches(struct Section *section, struct Section *dataSection)
{
if (!sect_HasData(section->type))
return;
@@ -432,6 +432,7 @@ static void applyFilePatches(struct Section *section)
int32_t value = computeRPNExpr(patch,
(struct Symbol const * const *)
section->fileSymbols);
uint16_t offset = patch->offset + section->offset;
/* `jr` is quite unlike the others... */
if (patch->type == PATCHTYPE_JR) {
@@ -443,7 +444,7 @@ static void applyFilePatches(struct Section *section)
if (offset < -128 || offset > 127)
error("%s: jr target out of reach (expected -129 < %" PRId16 " < 128)",
patch->fileName, offset);
section->data[patch->offset] = offset & 0xFF;
dataSection->data[offset] = offset & 0xFF;
} else {
/* Patch a certain number of bytes */
struct {
@@ -463,7 +464,7 @@ static void applyFilePatches(struct Section *section)
value < 0 ? " (maybe negative?)" : "",
types[patch->type].size * 8U);
for (uint8_t i = 0; i < types[patch->type].size; i++) {
section->data[patch->offset + i] = value & 0xFF;
dataSection->data[offset + i] = value & 0xFF;
value >>= 8;
}
}
@@ -479,9 +480,10 @@ static void applyFilePatches(struct Section *section)
static void applyPatches(struct Section *section, void *arg)
{
(void)arg;
struct Section *dataSection = section;
do {
applyFilePatches(section);
applyFilePatches(section, dataSection);
section = section->nextu;
} while (section);
}