[aandrejevic] 59816: [SOFT386] Implement the following instructions: PUSH reg16/reg32 POP reg16/reg32

Author: aandrejevic
Date: Sun Aug 25 12:17:24 2013
New Revision: 59816

URL: http://svn.reactos.org/svn/reactos?rev=59816&view=rev
Log:
[SOFT386]
Implement the following instructions:
PUSH reg16/reg32
POP reg16/reg32

Modified:
    branches/ntvdm/lib/soft386/opcodes.c
    branches/ntvdm/lib/soft386/opcodes.h

Modified: branches/ntvdm/lib/soft386/opcodes.c
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/soft386/opcodes.c?rev=...
==============================================================================
--- branches/ntvdm/lib/soft386/opcodes.c	[iso-8859-1] (original)
+++ branches/ntvdm/lib/soft386/opcodes.c	[iso-8859-1] Sun Aug 25 12:17:24 2013
@@ -104,22 +104,22 @@
     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
@@ -534,3 +534,55 @@
     /* 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;
+}

Modified: branches/ntvdm/lib/soft386/opcodes.h
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/lib/soft386/opcodes.h?rev=...
==============================================================================
--- branches/ntvdm/lib/soft386/opcodes.h	[iso-8859-1] (original)
+++ branches/ntvdm/lib/soft386/opcodes.h	[iso-8859-1] Sun Aug 25 12:17:24 2013
@@ -47,4 +47,20 @@
     UCHAR Opcode
 );

+BOOLEAN
+FASTCALL
+Soft386OpcodePushReg
+(
+    PSOFT386_STATE State,
+    UCHAR Opcode
+);
+
+BOOLEAN
+FASTCALL
+Soft386OpcodePopReg
+(
+    PSOFT386_STATE State,
+    UCHAR Opcode
+);
+
 #endif // _OPCODES_H_