/
bsantidebug.h
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/
bsantidebug.h
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/* -----------------------------------------------------------------------------
*
* Copyright (c) 2014-2019 Alexis Naveros.
*
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*
* -----------------------------------------------------------------------------
*/
#if BS_ENABLE_LIMITS
#define BS_LIMIT_HIDE_CHAR(x) (((x)^0x13)+0xf)
#define BS_LIMIT_UNHIDE_CHAR(x) (((x)-0xf)^0x13)
extern char bsInventoryLimitsWarning[];
extern char bsInventoryLimitsError[];
extern char bsInventoryLimitsRegister[];
void bsAntiDebugUnpack();
#endif
////
#if BS_ENABLE_ANTIDEBUG
#define BS_ANTIDEBUG_CONTEXT_VALUE (0x840)
#define BS_ANTIDEBUG_CONTEXT_VALUE_MASK (0x18c2)
#define BS_ANTIDEBUG_CONTEXT_TIME_SHIFT (30)
#define BS_ANTIDEBUG_CONTEXT_TIME_MASK (~((((uint64_t)1)<<BS_ANTIDEBUG_CONTEXT_TIME_SHIFT)-1))
#define BS_ANTIDEBUG_INIT_OFFSET (0x3d80)
#define BS_ANTIDEBUG_BLAPPLY_OFFSET (0xfd5) /* ccHash32Int32Inline(BS_ANTIDEBUG_CONTEXT_VALUE|0x0)&0xffff */
#define BS_ANTIDEBUG_BOAPPLY_RAW (0x9c51)
#define BS_ANTIDEBUG_BOAPPLY_OFFSET (0x22a9) /* ccHash32Int32Inline(BS_ANTIDEBUG_BOAPPLY_RAW)&0xffff */
int bsAntiDebugInit( bsContext *context, cpuInfo *cpuinfo );
void bsAntiDebugMid( bsContext *context );
void bsAntiDebugEnd( bsContext *context );
////
/* Increment the counter every call, to externally make sure the Checks() are being executed */
/* Important, read back this address through pointer arithmetics, not directly! We must hide access. */
extern uint64_t bsAntiDebugCheckCounter;
extern volatile uintptr_t bsAntiDebugInitOffset;
extern volatile uint32_t bsAntiDebugBoApplyOffset;
void __attribute__((noinline)) bsAntiDebugCountGetPointers( bsContext *context, int32_t **antidebugcount0, int32_t **antidebugcount1 );
#define BS_ANTIDEBUGCOUNT_OFFSET0 (48)
#define BS_ANTIDEBUGCOUNT_OFFSET1 (24)
static inline void __attribute__((always_inline)) bsAntiDebugCountReset( bsContext *context )
{
int32_t *antidebugcount0;
int32_t *antidebugcount1;
bsAntiDebugCountGetPointers( context, &antidebugcount0, &antidebugcount1 );
*((int32_t *)ADDRESS( antidebugcount0, -BS_ANTIDEBUGCOUNT_OFFSET0 )) = context->antidebugzero;
*((int32_t *)ADDRESS( antidebugcount1, -BS_ANTIDEBUGCOUNT_OFFSET1 )) = context->antidebugzero;
return;
}
static inline void __attribute__((always_inline)) bsAntiDebugCountInv( bsContext *context, const int varshift )
{
int itemindex, partcount, varmask;
bsxInventory *inv;
bsxItem *item;
int32_t * volatile antidebugcount1;
antidebugcount1 = ADDRESS( context, offsetof(bsContext,antidebugcount1) + BS_ANTIDEBUGCOUNT_OFFSET1 );
inv = context->inventory;
item = inv->itemlist;
partcount = 0;
varmask = BS_LIMITS_HARDMAX_PARTCOUNT_MASK >> varshift;
for( itemindex = 0 ; itemindex < inv->itemcount ; itemindex++, item++ )
{
if( item->flags & BSX_ITEM_FLAGS_DELETED )
continue;
partcount += item->quantity;
context->antidebugcount0 |= ( partcount >> varshift );
}
/* Increment check counter */
bsAntiDebugCheckCounter += partcount;
/* These masks should be zero, otherwise the inventory maximum is being exceeded */
context->antidebugcount0 &= varmask;
*((int32_t *)ADDRESS( antidebugcount1, -BS_ANTIDEBUGCOUNT_OFFSET1 )) |= ( partcount >> varshift ) & varmask;
return;
}
#endif