import new version of dietlibc

1 files changed, 112 insertions, 0 deletions

diff --git a/mdk-stage1/dietlibc/diet.c b/mdk-stage1/dietlibc/diet.c
new file mode 100644
index 000000000..1de6befc8
--- /dev/null
+++ b/mdk-stage1/dietlibc/diet.c
@@ -0,0 +1,112 @@
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+/* goal:
+ *   when invoked as
+ * "diet gcc -c t.c"
+ *   exec
+ * "gcc -I/path/to/dietlibc/include -c t.c"
+ *
+ *   when invoked as
+ * "diet sparc-linux-gcc -o t t.o"
+ *   exec
+ * "sparc-linux-gcc -nostdlib -static -o t t.o /path/to/dietlibc/bin-sparc/start.o /path/to/dietlibc/bin-sparc/dietlibc.a"
+*/
+
+void error(const char *message) {
+  write(2,message,strlen(message));
+  exit(1);
+}
+
+int main(int argc,char *argv[]) {
+  int link=0;
+  int compile=0;
+  char diethome[]=DIETHOME;
+  char platform[1000]=DIETHOME "/bin-";
+  char *nostdlib="-nostdlib";
+  char *libgcc="-lgcc";
+  char dashL[1000]="-L";
+  int i;
+
+  if (argc<2) {
+    error("usage: diet [gcc command line]\n"
+	  "e.g.   diet gcc -c t.c\n"
+	  "or     diet sparc-linux-gcc -o foo foo.c bar.o\n");
+  }
+  {
+    char *tmp=strchr(argv[1],0)-2;
+    char *tmp2;
+    char *cc=argv[1];
+    if (tmp<cc) goto donttouch;
+    if ((tmp2=strchr(cc,'-'))) {	/* cross compiling? */
+      int len=strlen(platform);
+      if (tmp2-cc>90) error("platform name too long!\n");
+      memmove(platform+len,argv[1],tmp2-cc);
+      platform[tmp2-cc+len]=0;
+/*      printf("found platform %s\n",platform); */
+    } else {
+#ifdef __sparc__
+      strcat(platform,"sparc");
+#endif
+#ifdef __ppc__
+      strcat(platform,"ppc");
+#endif
+#ifdef __i386__
+      strcat(platform,"i386");
+#endif
+#ifdef __alpha__
+      strcat(platform,"alpha");
+#endif
+#ifdef __arm__
+      strcat(platform,"arm");
+#endif
+#ifdef __mips__
+      strcat(platform,"mips");
+#endif
+    }
+    strcat(dashL,platform);
+    if (!strcmp(tmp,"cc")) {
+      char **newargv;
+      char **dest;
+      char *a,*b,*c;
+/* we need to add -I... if the command line contains -c, -S or -E */
+      for (i=2; i<argc; ++i)
+	if (!strcmp(argv[i],"-c") || !strcmp(argv[i],"-S") || !strcmp(argv[i],"-E"))
+	  compile=1;
+/* we need to add -nostdlib if we are not compiling*/
+      link=!compile;
+#if 0
+      for (i=2; i<argc; ++i)
+	if (!strcmp(argv[i],"-o"))
+	  if (!compile) link=1;
+#endif
+      newargv=alloca(sizeof(char*)*(argc+6));
+      a=alloca(strlen(diethome)+20);
+      b=alloca(strlen(platform)+20);
+      c=alloca(strlen(platform)+20);
+
+      strcpy(a,"-I"); strcat(a,diethome); strcat(a,"/include");
+      strcpy(b,platform); strcat(b,"/start.o");
+      strcpy(c,platform); strcat(c,"/dietlibc.a");
+
+      dest=newargv;
+      *dest++=argv[1];
+      if (link) { *dest++=nostdlib; *dest++=dashL; }
+      if (compile || link) *dest++=a;
+      for (i=2; i<argc; ++i)
+	*dest++=argv[i];
+      if (link) { *dest++=b; *dest++=c; *dest++=libgcc; }
+      *dest=0;
+      execvp(newargv[0],newargv);
+      goto error;
+    } else if (!strcmp(tmp,"ld")) {
+    }
+  }
+donttouch:
+  execvp(argv[1],argv+1);
+error:
+  error("execvp failed!\n");
+  return 1;
+}