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Add WIP FinalizeHeader function

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Aetias
2023-10-17 20:40:24 +02:00
parent 07eaa3b2c6
commit ae229005d4
1 changed files with 34 additions and 5 deletions
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tools/rom/build.c
+34 -5
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@@ -32,7 +32,7 @@ const uint8_t logo[] = {
uint16_t crcTable[0x100];
void GenerateCrcTable() {
uint16_t polynomial = 0x2f15;
uint16_t polynomial = 0xa001;
for (size_t i = 0; i < 0x100; ++i) {
uint16_t value = i;
for (size_t j = 0; j < 8; ++j) {
@@ -443,6 +443,31 @@ bool RewriteFat(FILE *fpRom, size_t fatStart, const FatEntry *entries, size_t nu
fseek(fpRom, 0, SEEK_END);
}
bool FinalizeHeader(FILE *fpRom, Header *pHeader) {
Header header;
memcpy(&header, pHeader, sizeof(header));
FILE *fp = fopen(ARM9_PROGRAM_FILE, "rb");
if (fp == NULL) FATAL("Failed to open ARM9 program '" ARM9_PROGRAM_FILE "'\n");
uint8_t secureArea[0x4000];
if (fread(secureArea, sizeof(secureArea), 1, fp) != 1) FATAL("Failed to read secure area\n");
fclose(fp);
header.secureAreaCrc = Crc(secureArea, sizeof(secureArea));
header.headerCrc = Crc(&header, offsetof(Header, headerCrc));
size_t prevPos = ftell(fpRom);
fseek(fpRom, 0, SEEK_SET);
if (fwrite(&header, sizeof(header), 1, fpRom) != 1) {
fprintf(stderr, "Failed to rewrite header\n");
return 1;
}
fseek(fpRom, prevPos, SEEK_SET);
memcpy(pHeader, &header, sizeof(header));
return true;
}
void PrintUsage(const char *program) {
printf(
"buildrom " VERSION "\n"
@@ -645,11 +670,15 @@ int main(int argc, const char **argv) {
size_t romEnd = 1 << (17 + header.capacity);
if (!Align(romEnd, fpRom, &address)) return 1;
header.headerCrc = Crc(&header, offsetof(Header, headerCrc));
if (chdir(buildDir) != 0) {
fprintf(stderr, "Failed to enter build directory '%s'\n", buildDir);
return 1;
}
fseek(fpRom, 0, SEEK_SET);
if (fwrite(&header, sizeof(header), 1, fpRom) != 1) {
fprintf(stderr, "Failed to rewrite header\n");
if (!FinalizeHeader(fpRom, &header)) return false;
if (chdir(rootDir) != 0) {
fprintf(stderr, "Failed to leave build directory '%s'\n", buildDir);
return 1;
}