Inial population of repository.

simulator/file_splitter/file_splitter.cpp

@@ -0,0 +1,85 @@
+#define _CRT_SECURE_NO_WARNINGS
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include "utils.h"
+#include <boost/filesystem.hpp>
+
+int main(int argc, char* argv[])
+{
+	if (argc != 5) {
+		printf("Usage: %s <image file> <start addr> <end addr> <output file>\n",argv[0]);
+		return 1;
+	}
+
+	uint32_t StartAddr;
+	uint32_t EndAddr;
+	char *EndPtr;
+	errno = 0;
+
+	StartAddr = strtoul(argv[2],&EndPtr,0);
+	if (errno != 0 || EndPtr[0] != 0) {
+		printf("Invalid start address\n");
+		return 1;
+	}
+	EndAddr = strtoul(argv[3],&EndPtr,0);
+	if (errno != 0 || EndPtr[0] != 0) {
+		printf("Invalid end address\n");
+		return 1;
+	}
+
+	const char *InFileName = argv[1];
+	const char *OutFileName = argv[4];
+
+	FILE *Input = fopen(InFileName,"rb");
+	if (Input == nullptr) {
+		printf("Can't open input file: %s\n", InFileName);
+		return 1;
+	}
+	FILE *Output = fopen(OutFileName,"wb");
+	if (Output == nullptr) {
+		fclose(Input);
+		printf("Can't create output file: %s\n", OutFileName);
+	}
+
+	uint64_t FileSize = boost::filesystem::file_size(InFileName);
+
+	if (EndAddr == 0) EndAddr = (uint32_t)FileSize;
+	if (EndAddr > (uint32_t)FileSize) EndAddr = (uint32_t)FileSize;
+	const size_t MaxFileSize = 1024*1024*1024;
+	if (FileSize > MaxFileSize) {
+		printf("Can't use files larger than %uMB\n",unsigned(MaxFileSize/1024/1024));
+		fclose(Input);
+		fclose(Output);
+		return 1;
+	}
+	uint8_t *File = new uint8_t[(size_t)FileSize+1];
+	if (File == nullptr) {
+		printf("Not enough memory to allocate buffer for image\n");
+		fclose(Input);
+		fclose(Output);
+		return 1;
+	}
+
+	size_t Read = fread(File,sizeof(uint8_t),(size_t)FileSize,Input);
+	fclose(Input);
+	if (Read != FileSize) {
+		printf("Can't read file.\n");
+		fclose(Output);
+		return 1;
+	}
+	printf("Start addr: 0x%08x\n", StartAddr);
+	printf("End addr: 0x%08x\n", EndAddr);
+	size_t Written = fwrite(File + StartAddr,sizeof(uint8_t),EndAddr-StartAddr,Output);
+	if (Written != EndAddr-StartAddr) {
+		printf("Can't write output file.\n");
+		return 1;
+	}
+	fclose(Output);
+	delete[] File;
+	return 0;
+}
+