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[SOFT386]

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Implement the near absolute indirect JMP/CALL in opcode group 0xFF.


svn path=/branches/ntvdm/; revision=60686
This commit is contained in:
Aleksandar Andrejevic 2013-10-16 01:44:39 +00:00
parent 4b14d9a672
commit 1df88c9d1d
1 changed files with 37 additions and 1 deletions
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38
lib/soft386/opgroups.c
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@ -1496,6 +1496,23 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeGroupFF)
Value--;
State->Flags.Af = ((Value & 0x0F) == 0x0F);
}
else if (ModRegRm.Register == 2)
{
/* Push the current value of EIP */
if (!Soft386StackPush(State, State->InstPtr.Long))
{
/* Exception occurred */
return FALSE;
}
/* Set the EIP to the address */
State->InstPtr.Long = Value;
}
else if (ModRegRm.Register == 4)
{
/* Set the EIP to the address */
State->InstPtr.Long = Value;
}
else if (ModRegRm.Register == 6)
{
/* Push the value on to the stack */
@ -1540,6 +1557,23 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeGroupFF)
Value--;
State->Flags.Af = ((Value & 0x0F) == 0x0F);
}
else if (ModRegRm.Register == 2)
{
/* Push the current value of IP */
if (!Soft386StackPush(State, State->InstPtr.LowWord))
{
/* Exception occurred */
return FALSE;
}
/* Set the IP to the address */
State->InstPtr.LowWord = Value;
}
else if (ModRegRm.Register == 4)
{
/* Set the IP to the address */
State->InstPtr.LowWord = Value;
}
else if (ModRegRm.Register == 6)
{
/* Push the value on to the stack */
@ -1561,7 +1595,9 @@ SOFT386_OPCODE_HANDLER(Soft386OpcodeGroupFF)
}
}
if ((ModRegRm.Register > 1) && (ModRegRm.Register != 6))
if ((ModRegRm.Register == 3)
|| (ModRegRm.Register == 5)
|| (ModRegRm.Register == 7))
{
UNIMPLEMENTED;
return FALSE; // NOT IMPLEMENTED