diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 33 |
1 files changed, 29 insertions, 4 deletions
@@ -18,6 +18,11 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "config.h" +#ifdef _WIN32 +#include <windows.h> +#else +#include <sys/mman.h> +#endif #include <stdlib.h> #include <stdio.h> #include <stdarg.h> @@ -25,9 +30,6 @@ #include <errno.h> #include <unistd.h> #include <inttypes.h> -#if !defined(CONFIG_SOFTMMU) -#include <sys/mman.h> -#endif #include "cpu.h" #include "exec-all.h" @@ -130,10 +132,33 @@ static void page_init(void) /* NOTE: we can always suppose that qemu_host_page_size >= TARGET_PAGE_SIZE */ #ifdef _WIN32 - qemu_real_host_page_size = 4096; + { + SYSTEM_INFO system_info; + DWORD old_protect; + + GetSystemInfo(&system_info); + qemu_real_host_page_size = system_info.dwPageSize; + + VirtualProtect(code_gen_buffer, sizeof(code_gen_buffer), + PAGE_EXECUTE_READWRITE, &old_protect); + } #else qemu_real_host_page_size = getpagesize(); + { + unsigned long start, end; + + start = (unsigned long)code_gen_buffer; + start &= ~(qemu_real_host_page_size - 1); + + end = (unsigned long)code_gen_buffer + sizeof(code_gen_buffer); + end += qemu_real_host_page_size - 1; + end &= ~(qemu_real_host_page_size - 1); + + mprotect((void *)start, end - start, + PROT_READ | PROT_WRITE | PROT_EXEC); + } #endif + if (qemu_host_page_size == 0) qemu_host_page_size = qemu_real_host_page_size; if (qemu_host_page_size < TARGET_PAGE_SIZE) |