ligb++-1.36.1 bug in test0 on Pyramids.

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1 total messages Started by jonathan Mon, 18 Dec 1989 00:32

#542

Author: jonathan
Date: Mon, 18 Dec 1989 00:32

47 lines
1490 bytes

Test0 fails to run on machines that do not allow the data segment to
be executed (for example, Pyramids running OSx 4.n).

The following diff fixes this problem on a Pyramid.

*** test.hello.cc.DIST	Thu Nov  9 00:28:31 1989
--- test.hello.cc	Mon Dec 18 13:18:39 1989
***************
*** 20,25 ****
--- 20,35 ----
  #endif
  
  
+ #ifdef __pyr__
+ #define MUST_MPROTECT
+ #include <sys/mman.h>
+ 
+ extern "C" {
+   int
+   mprotect (char *, int, int);
+ }
+ #endif
+ 
  class tfile
  {
  public:
***************
*** 101,106 ****
--- 111,128 ----
  
    read (fd, (char*) init_fn, size);
    close (fd);
+ 
+ #ifdef MUST_MPROTECT
+  {
+    void * rounded_size = (void *) ((size + pagsiz-1)&~(pagsiz-1));
+    int status = mprotect ((char*)init_fn, round_size,
+ 			  PROT_READ|PROT_EXEC|PROT_WRITE);
+    if (status !=0 ) {
+      perror ("making dynamically loaded code executable");
+      exit(errno);
+    }
+ }
+ #endif /* MUST_MPROTECT */
  
    fprintf (stderr, "load symbol-table at address 0x%x\n", init_fn);

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