gwj / at91sam9263 · Commits

Commit d5a8f07c52161a5d8021ace23029397475286eb2

Authored by bellard
1 parent 345fbaa3

no data exec support 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1074 c046a42c-6fe2-441c-8c8c-71466251a162
Inline Side-by-side
Showing 1 changed file with 29 additions and 4 deletions
... ... @@ -18,6 +18,11 @@
18 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 19 */
20 20 #include "config.h"
  21 +#ifdef _WIN32
  22 +#include <windows.h>
  23 +#else
  24 +#include <sys/mman.h>
  25 +#endif
21 26 #include <stdlib.h>
22 27 #include <stdio.h>
23 28 #include <stdarg.h>
... ... @@ -25,9 +30,6 @@
25 30 #include <errno.h>
26 31 #include <unistd.h>
27 32 #include <inttypes.h>
28   -#if !defined(CONFIG_SOFTMMU)
29   -#include <sys/mman.h>
30   -#endif
31 33  
32 34 #include "cpu.h"
33 35 #include "exec-all.h"
... ... @@ -130,10 +132,33 @@ static void page_init(void)
130 132 /* NOTE: we can always suppose that qemu_host_page_size >=
131 133 TARGET_PAGE_SIZE */
132 134 #ifdef _WIN32
133   - qemu_real_host_page_size = 4096;
  135 + {
  136 + SYSTEM_INFO system_info;
  137 + DWORD old_protect;
  138 +
  139 + GetSystemInfo(&system_info);
  140 + qemu_real_host_page_size = system_info.dwPageSize;
  141 +
  142 + VirtualProtect(code_gen_buffer, sizeof(code_gen_buffer),
  143 + PAGE_EXECUTE_READWRITE, &old_protect);
  144 + }
134 145 #else
135 146 qemu_real_host_page_size = getpagesize();
  147 + {
  148 + unsigned long start, end;
  149 +
  150 + start = (unsigned long)code_gen_buffer;
  151 + start &= ~(qemu_real_host_page_size - 1);
  152 +
  153 + end = (unsigned long)code_gen_buffer + sizeof(code_gen_buffer);
  154 + end += qemu_real_host_page_size - 1;
  155 + end &= ~(qemu_real_host_page_size - 1);
  156 +
  157 + mprotect((void *)start, end - start,
  158 + PROT_READ | PROT_WRITE | PROT_EXEC);
  159 + }
136 160 #endif
  161 +
137 162 if (qemu_host_page_size == 0)
138 163 qemu_host_page_size = qemu_real_host_page_size;
139 164 if (qemu_host_page_size < TARGET_PAGE_SIZE)
... ...