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===================================================================
RCS file: /sources/tinycc/tinycc/tcc.c,v
retrieving revision 1.172
retrieving revision 1.173
diff -u -r1.172 -r1.173
--- tinycc/tcc.c 2005/06/17 22:05:58 1.172
+++ tinycc/tcc.c 2005/09/03 18:31:43 1.173
@@ -40,14 +40,20 @@
#include <time.h>
#ifdef WIN32
#include <sys/timeb.h>
+#include <windows.h>
#endif
#ifndef WIN32
#include <sys/time.h>
#include <sys/ucontext.h>
+#include <sys/mman.h>
#endif
#endif /* !CONFIG_TCCBOOT */
+#ifndef PAGESIZE
+#define PAGESIZE 4096
+#endif
+
#include "elf.h"
#include "stab.h"
@@ -199,7 +205,7 @@
int sh_entsize; /* elf entry size */
unsigned long sh_size; /* section size (only used during output) */
unsigned long sh_addr; /* address at which the section is relocated */
- unsigned long sh_offset; /* address at which the section is relocated */
+ unsigned long sh_offset; /* file offset */
int nb_hashed_syms; /* used to resize the hash table */
struct Section *link; /* link to another section */
struct Section *reloc; /* corresponding section for relocation, if any */
@@ -9615,6 +9621,30 @@
if (s->reloc)
relocate_section(s1, s);
}
+
+ /* mark executable sections as executable in memory */
+ for(i = 1; i < s1->nb_sections; i++) {
+ s = s1->sections[i];
+ if ((s->sh_flags & (SHF_ALLOC | SHF_EXECINSTR)) ==
+ (SHF_ALLOC | SHF_EXECINSTR)) {
+#ifdef WIN32
+ {
+ DWORD old_protect;
+ VirtualProtect(s->data, s->data_offset,
+ PAGE_EXECUTE_READWRITE, &old_protect);
+ }
+#else
+ {
+ unsigned long start, end;
+ start = (unsigned long)(s->data) & ~(PAGESIZE - 1);
+ end = (unsigned long)(s->data + s->data_offset);
+ end = (end + PAGESIZE - 1) & ~(PAGESIZE - 1);
+ mprotect((void *)start, end - start,
+ PROT_READ | PROT_WRITE | PROT_EXEC);
+ }
+#endif
+ }
+ }
return 0;
}
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