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Some extra checks and safety space for add_stub function.

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@21382 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2006-11-29 12:44:05 +00:00
parent 383008da88
commit 8f874369b5
1 changed files with 10 additions and 4 deletions
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14
loader/win32.c
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@ -5278,16 +5278,22 @@ static void ext_stubs(void)
//static void add_stub(int pos)
#define MAX_STUB_SIZE 0x60
#define MAX_NUM_STUBS 200
static int pos=0;
static char extcode[20000];// place for 200 unresolved exports
static char extcode[MAX_NUM_STUBS * MAX_STUB_SIZE];
static void* add_stub(void)
{
int i;
// generated code in runtime!
char* answ = (char*)extcode+pos*0x30;
memcpy(answ, ext_stubs, 0x2f); // 0x2c is current size
for (i = 0; i < 0x30 - 3; i++) {
char* answ = extcode + pos * MAX_STUB_SIZE;
if (pos >= MAX_NUM_STUBS) {
printf("too many stubs, expect crash\n");
return NULL;
}
memcpy(answ, ext_stubs, MAX_STUB_SIZE);
for (i = 0; i < MAX_STUB_SIZE - 3; i++) {
if (*(int*)(answ + i) == 0xdeadabcd)
break;
}