/*
* Return address of the stub function is passed into eip
*/
static void m_munprotect(unsigned int addr, unsigned int len, unsigned char *eip)
{
if (debug_level('e')>3) e_printf("\tM_MUNPROT %08x:%p [%08x]\n",
addr,eip,*((int *)(eip-3)));
/* if only data in aliased low memory is hit, nothing to do */
if (LINEAR2UNIX(addr) != MEM_BASE32(addr) && !e_querymark(addr, len))
return;
/* Always unprotect and clear all code in the pages
* for either DPMI data or code.
* Maybe the stub was set up before that code was parsed.
* Clear that code */
if (debug_level('e')>1 && e_querymark(addr, len))
e_printf("CODE %08x hit in DATA %p patch\n",addr,eip);
/* if (UnCpatch((void *)(eip-3))) leavedos_main(0); */
InvalidateNodePage(addr,len,eip,NULL);
e_resetpagemarks(addr,len);
e_munprotect(addr,len);
}
static void r_munprotect(unsigned int addr, unsigned int len, unsigned char *eip)
{
if (EFLAGS & EFLAGS_DF) addr -= len;
if (debug_level('e')>3)
dbug_printf("\tR_MUNPROT %08x:%08x %s\n",
addr,addr+len,(EFLAGS&EFLAGS_DF?"back":"fwd"));
if (LINEAR2UNIX(addr) != MEM_BASE32(addr) && !e_querymark(addr, len))
return;
InvalidateNodePage(addr,len,eip,NULL);
e_resetpagemarks(addr,len);
e_munprotect(addr,len);
}
/*
* Return address of the stub function is passed into eip
*/
static int m_munprotect(unsigned int addr, unsigned int len, unsigned char *eip)
{
if (debug_level('e')>3) e_printf("\tM_MUNPROT %08x:%p [%08x]\n",
addr,eip,*((int *)(eip-3)));
/* verify that data, not code, has been hit */
if (!e_querymark(addr, len))
return e_check_munprotect(addr, len);
/* Oops.. we hit code, maybe the stub was set up before that
* code was parsed. Ok, undo the patch and clear that code */
if (debug_level('e')>1)
e_printf("CODE %08x hit in DATA %p patch\n",addr,eip);
/* if (UnCpatch((void *)(eip-3))) leavedos_main(0); */
InvalidateNodePage(addr,len,eip,NULL);
return e_check_munprotect(addr, len);
}
