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Fix opening nonexistent overlay files

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Sanqui
2016-03-28 20:46:10 +02:00
parent 2e9c68f8c3
commit 280ca83acd
1 changed files with 8 additions and 4 deletions
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12
src/link/output.c
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@@ -104,15 +104,19 @@ Output(void)
if ((f = fopen(tzOutname, "wb"))) { if ((f = fopen(tzOutname, "wb"))) {
if (tzOverlayname) { if (tzOverlayname) {
f_overlay = fopen(tzOverlayname, "rb"); f_overlay = fopen(tzOverlayname, "rb");
if (!f_overlay) {
fprintf(stderr, "Failed to open overlay file %s\n", tzOverlayname);
exit(1);
}
fseek(f_overlay, 0, SEEK_END); fseek(f_overlay, 0, SEEK_END);
if (ftell(f_overlay) % 0x4000 != 0) { if (ftell(f_overlay) % 0x4000 != 0) {
fprintf(stderr, "Overlay file must be aligned to 0x4000 bytes"); fprintf(stderr, "Overlay file must be aligned to 0x4000 bytes\n");
exit(1); exit(1);
} }
MaxOverlayBank = (ftell(f_overlay) / 0x4000) - 1; MaxOverlayBank = (ftell(f_overlay) / 0x4000) - 1;
if (MaxOverlayBank < 1) { if (MaxOverlayBank < 1) {
fprintf(stderr, "Overlay file be at least 0x8000 bytes"); fprintf(stderr, "Overlay file be at least 0x8000 bytes\n");
exit(1); exit(1);
} }
if (MaxOverlayBank > MaxBankUsed) { if (MaxOverlayBank > MaxBankUsed) {
MaxBankUsed = MaxOverlayBank; MaxBankUsed = MaxOverlayBank;