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enable full execution privileges for the dynamic core cache (windows DEP);

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raise generated data per block overflow buffer a bit


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2879
This commit is contained in:
Sebastian Strohhäcker 2007-06-09 17:57:28 +00:00
parent b6aff7b628
commit 24eba30d23
4 changed files with 30 additions and 2 deletions
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7
src/cpu/core_dyn_x86.cpp
View file

@ -27,6 +27,11 @@
#include <stddef.h>
#include <stdlib.h>
#if defined (_MSC_VER)
#include <windows.h>
#include <winbase.h>
#endif
#if (C_HAVE_MPROTECT)
#include <sys/mman.h>
@ -45,7 +50,7 @@
#include "inout.h"
#include "fpu.h"
#define CACHE_MAXSIZE (4096*2)
#define CACHE_MAXSIZE (4096*3)
#define CACHE_TOTAL (1024*1024*8)
#define CACHE_PAGES (512)
#define CACHE_BLOCKS (64*1024)

11
src/cpu/core_dyn_x86/cache.h
View file

@ -457,8 +457,15 @@ static void cache_init(bool enable) {
}
}
if (cache_code_start_ptr==NULL) {
#if defined (_MSC_VER)
cache_code_start_ptr=(Bit8u*)VirtualAlloc(0,CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP,
MEM_COMMIT,PAGE_EXECUTE_READWRITE);
if (!cache_code_start_ptr)
cache_code_start_ptr=(Bit8u*)malloc(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP);
#else
cache_code_start_ptr=(Bit8u*)malloc(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP);
if(!cache_code_start_ptr) E_Exit("Allocating dynamic cache failed");
#endif
if(!cache_code_start_ptr) E_Exit("Allocating dynamic core cache memory failed");
cache_code=(Bit8u*)(((int)cache_code_start_ptr + PAGESIZE_TEMP-1) & ~(PAGESIZE_TEMP-1)); //MEM LEAK. store old pointer if you want to free it.
@ -510,6 +517,8 @@ static void cache_close(void) {
cache_blocks = NULL;
}
if (cache_code_start_ptr != NULL) {
### care: under windows VirtualFree() has to be used if
### VirtualAlloc was used for memory allocation
free(cache_code_start_ptr);
cache_code_start_ptr = NULL;
}

5
src/cpu/core_dynrec.cpp
View file

@ -27,6 +27,11 @@
#include <stddef.h>
#include <stdlib.h>
#if defined (_MSC_VER)
#include <windows.h>
#include <winbase.h>
#endif
#if (C_HAVE_MPROTECT)
#include <sys/mman.h>

9
src/cpu/core_dynrec/cache.h
View file

@ -562,7 +562,14 @@ static void cache_init(bool enable) {
}
if (cache_code_start_ptr==NULL) {
// allocate the code cache memory
#if defined (_MSC_VER)
cache_code_start_ptr=(Bit8u*)VirtualAlloc(0,CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP,
MEM_COMMIT,PAGE_EXECUTE_READWRITE);
if (!cache_code_start_ptr)
cache_code_start_ptr=(Bit8u*)malloc(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP);
#else
cache_code_start_ptr=(Bit8u*)malloc(CACHE_TOTAL+CACHE_MAXSIZE+PAGESIZE_TEMP-1+PAGESIZE_TEMP);
#endif
if(!cache_code_start_ptr) E_Exit("Allocating dynamic cache failed");
// align the cache at a page boundary
@ -624,6 +631,8 @@ static void cache_close(void) {
cache_blocks = NULL;
}
if (cache_code_start_ptr != NULL) {
### care: under windows VirtualFree() has to be used if
### VirtualAlloc was used for memory allocation
free(cache_code_start_ptr);
cache_code_start_ptr = NULL;
}