Soft386OpcodeDecrement,
Soft386OpcodeDecrement,
Soft386OpcodeDecrement,
- NULL, // TODO: OPCODE 0x50 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x51 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x52 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x53 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x54 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x55 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x56 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x57 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x58 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x59 NOT SUPPORTED
- NULL, // TODO: OPCODE 0x5A NOT SUPPORTED
- NULL, // TODO: OPCODE 0x5B NOT SUPPORTED
- NULL, // TODO: OPCODE 0x5C NOT SUPPORTED
- NULL, // TODO: OPCODE 0x5D NOT SUPPORTED
- NULL, // TODO: OPCODE 0x5E NOT SUPPORTED
- NULL, // TODO: OPCODE 0x5F NOT SUPPORTED
+ Soft386OpcodePushReg,
+ Soft386OpcodePushReg,
+ Soft386OpcodePushReg,
+ Soft386OpcodePushReg,
+ Soft386OpcodePushReg,
+ Soft386OpcodePushReg,
+ Soft386OpcodePushReg,
+ Soft386OpcodePushReg,
+ Soft386OpcodePopReg,
+ Soft386OpcodePopReg,
+ Soft386OpcodePopReg,
+ Soft386OpcodePopReg,
+ Soft386OpcodePopReg,
+ Soft386OpcodePopReg,
+ Soft386OpcodePopReg,
+ Soft386OpcodePopReg,
NULL, // TODO: OPCODE 0x60 NOT SUPPORTED
NULL, // TODO: OPCODE 0x61 NOT SUPPORTED
NULL, // TODO: OPCODE 0x62 NOT SUPPORTED
/* Return success */
return TRUE;
}
+
+BOOLEAN
+FASTCALL
+Soft386OpcodePushReg(PSOFT386_STATE State, UCHAR Opcode)
+{
+ if ((State->PrefixFlags != SOFT386_PREFIX_OPSIZE)
+ && (State->PrefixFlags != 0))
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ /* Make sure this is the right instruction */
+ ASSERT((Opcode & 0xF8) == 0x50);
+
+ /* Call the internal function */
+ return Soft386StackPush(State, State->GeneralRegs[Opcode & 0x07].Long);
+}
+
+BOOLEAN
+FASTCALL
+Soft386OpcodePopReg(PSOFT386_STATE State, UCHAR Opcode)
+{
+ ULONG Value;
+ BOOLEAN Size = State->SegmentRegs[SOFT386_REG_SS].Size;
+
+ if (State->PrefixFlags == SOFT386_PREFIX_OPSIZE)
+ {
+ /* The OPSIZE prefix toggles the size */
+ Size = !Size;
+ }
+ else if (State->PrefixFlags != 0)
+ {
+ /* Invalid prefix */
+ Soft386Exception(State, SOFT386_EXCEPTION_UD);
+ return FALSE;
+ }
+
+ /* Make sure this is the right instruction */
+ ASSERT((Opcode & 0xF8) == 0x58);
+
+ /* Call the internal function */
+ if (!Soft386StackPop(State, &Value)) return FALSE;
+
+ /* Store the value */
+ if (Size) State->GeneralRegs[Opcode & 0x07].Long = Value;
+ else State->GeneralRegs[Opcode & 0x07].LowWord = Value;
+
+ /* Return success */
+ return TRUE;
+}