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[FAST486]

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The FPU function number is actually just the REG component of a mod-reg-r/m byte.


svn path=/branches/ntvdm/; revision=62346
This commit is contained in:
Aleksandar Andrejevic
2014-02-27 06:11:05 +00:00
parent 2d9fbc6954
commit 931a83808f
1 changed files with 32 additions and 24 deletions
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lib/fast486/fpu.c
+32 -24
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@@ -35,10 +35,11 @@
FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD8)
{
UCHAR Function;
FAST486_MOD_REG_RM ModRegRm;
BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;
/* Fetch the function number */
if (!Fast486FetchByte(State, &Function))
/* Get the operands */
if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
{
/* Exception occurred */
return FALSE;
@@ -59,10 +60,11 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD8)
FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
{
UCHAR Function;
FAST486_MOD_REG_RM ModRegRm;
BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;
/* Fetch the function number */
if (!Fast486FetchByte(State, &Function))
/* Get the operands */
if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
{
/* Exception occurred */
return FALSE;
@@ -83,10 +85,11 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeD9)
FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDA)
{
UCHAR Function;
FAST486_MOD_REG_RM ModRegRm;
BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;
/* Fetch the function number */
if (!Fast486FetchByte(State, &Function))
/* Get the operands */
if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
{
/* Exception occurred */
return FALSE;
@@ -107,10 +110,11 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDA)
FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
{
UCHAR Function;
FAST486_MOD_REG_RM ModRegRm;
BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;
/* Fetch the function number */
if (!Fast486FetchByte(State, &Function))
/* Get the operands */
if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
{
/* Exception occurred */
return FALSE;
@@ -131,10 +135,11 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDB)
FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDC)
{
UCHAR Function;
FAST486_MOD_REG_RM ModRegRm;
BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;
/* Fetch the function number */
if (!Fast486FetchByte(State, &Function))
/* Get the operands */
if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
{
/* Exception occurred */
return FALSE;
@@ -155,10 +160,11 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDC)
FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
{
UCHAR Function;
FAST486_MOD_REG_RM ModRegRm;
BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;
/* Fetch the function number */
if (!Fast486FetchByte(State, &Function))
/* Get the operands */
if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
{
/* Exception occurred */
return FALSE;
@@ -179,10 +185,11 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDD)
FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDE)
{
UCHAR Function;
FAST486_MOD_REG_RM ModRegRm;
BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;
/* Fetch the function number */
if (!Fast486FetchByte(State, &Function))
/* Get the operands */
if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
{
/* Exception occurred */
return FALSE;
@@ -203,10 +210,11 @@ FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDE)
FAST486_OPCODE_HANDLER(Fast486FpuOpcodeDF)
{
UCHAR Function;
FAST486_MOD_REG_RM ModRegRm;
BOOLEAN AddressSize = State->SegmentRegs[FAST486_REG_CS].Size;
/* Fetch the function number */
if (!Fast486FetchByte(State, &Function))
/* Get the operands */
if (!Fast486ParseModRegRm(State, AddressSize, &ModRegRm))
{
/* Exception occurred */
return FALSE;