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[FAST486]

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Add a macro ALIGNMENT_CHECK that checks for unaligned pointers and generates an exception.


svn path=/branches/ntvdm/; revision=62279
This commit is contained in:
Aleksandar Andrejevic 2014-02-21 01:29:13 +00:00
parent 011259b78f
commit 0b434e7c6c
1 changed files with 9 additions and 0 deletions
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9
lib/fast486/common.h
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@ -55,6 +55,15 @@ if (State->PrefixFlags & FAST486_PREFIX_LOCK)\
#define SWAP(x, y) { (x) ^= (y); (y) ^= (x); (x) ^= (y); }
#define ALIGNMENT_CHECK(x, a) if (State->Flags.Ac \
&& (State->ControlRegisters[FAST486_REG_CR0] & FAST486_CR0_AM)\
&& (State->Cpl == 3)\
&& (((x) % (a)) != 0))\
{\
Fast486Exception(State, FAST486_EXCEPTION_AC);\
return FALSE;\
}
#define PAGE_ALIGN(x) ((x) & 0xFFFFF000)
#define PAGE_OFFSET(x) ((x) & 0x00000FFF)
#define GET_ADDR_PDE(x) ((x) >> 22)