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[/] [plasma/] [tags/] [arelease/] [tools/] [convert.c] - Rev 368
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//convert.c by Steve Rhoads 4/26/01 //This program takes a little-endian MIPS executable and //converts it to a big-endian executable and changes //absolute jumps to branches. #include <stdio.h> #include <stdlib.h> #define BUF_SIZE (1024*1024) #define CODE_OFFSET 0x200 int main(int argc,char *argv[]) { FILE *infile,*outfile; unsigned char *buf; long size,i,j; unsigned long d; infile=fopen("test.exe","rb"); if(infile==NULL) { printf("Can't open test.exe"); return 0; } buf=(unsigned char*)malloc(BUF_SIZE); size=fread(buf,1,BUF_SIZE,infile); fclose(infile); outfile=fopen("code.txt","w"); infile=fopen("test2.exe","wb"); for(i=CODE_OFFSET;i<size;i+=4) { d=(buf[i+3]<<24)|(buf[i+2]<<16)|(buf[i+1]<<8)|buf[i]; if((d>>24)==0x0c) { //JAL j=(d&0xfffff)-0x400-((i-CODE_OFFSET)>>2)-1; //BGEZAL d=0x04110000+(j&0xffff); } if(i==CODE_OFFSET) { d=0x341d8000; //ori $29,0,0x8000 } fprintf(outfile,"%8.8x\n",d); fwrite(&d,4,1,infile); } fclose(outfile); fclose(infile); free(buf); return 0; }
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