Retro/pcjs
Watch
1
0
Fork
You've already forked pcjs
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Fixed INT and RETF when stack switches occur

Browse source
This commit is contained in:
Jeff Parsons 2014-11-26 16:34:54 -08:00 • committed by jeffpar
commit 38c2928882
7 changed files with 81 additions and 49 deletions
Download patch file Download diff file Expand all files Collapse all files

12
modules/pcjs/lib/x86op0f.js
View file

@ -46,7 +46,7 @@ var X86Op0F = {
*
* op=0x0F,0x00 (grp6 rm)
*/
opGRP6: function() {
opGrp6: function() {
var bModRM = this.getIPByte();
if ((bModRM & 0x38) < 0x10) { // possible reg values: 0x00, 0x08, 0x10, 0x18, 0x20, 0x28, 0x30, 0x38
if (EAFUNCS) this.modEAWord = this.modEAWordDisabled; else this.opFlags |= X86.OPFLAG.NOREAD;
@ -59,7 +59,7 @@ var X86Op0F = {
*
* op=0x0F,0x01 (grp7 rm)
*/
opGRP7: function() {
opGrp7: function() {
var bModRM = this.getIPByte();
if (!(bModRM & 0x10)) {
if (EAFUNCS) this.modEAWord = this.modEAWordDisabled; else this.opFlags |= X86.OPFLAG.NOREAD;
@ -438,7 +438,7 @@ var X86Op0F = {
};
X86Op0F.aOps0F = [
X86Op0F.opGRP6, X86Op0F.opGRP7, X86Op0F.opLAR, X86Op0F.opLSL, // 0x00-0x03
X86Op0F.opGrp6, X86Op0F.opGrp7, X86Op0F.opLAR, X86Op0F.opLSL, // 0x00-0x03
X86OpXX.opUndefined, X86Op0F.opLOADALL, X86Op0F.opCLTS, X86OpXX.opUndefined, // 0x04-0x07
/*
* On all processors (except the 8086/8088, of course), 0x0F,0x0B is also referred to as "UD2": an
@ -509,8 +509,8 @@ X86Op0F.aOps0F = [
];
/*
* These instruction groups are not as orthogonal as the original 8086/8088 groups (GRP1 through GRP4): some of
* the instructions in GRP6 and GRP7 only read their dst operand (eg, LLDT), which means the ModRM helper function
* These instruction groups are not as orthogonal as the original 8086/8088 groups (Grp1 through Grp4): some of
* the instructions in Grp6 and Grp7 only read their dst operand (eg, LLDT), which means the ModRM helper function
* must insure that setEAWord() is disabled, while others only write their dst operand (eg, SLDT), which means that
* getEAWord() should be disabled *prior* to calling the ModRM helper function. This latter case requires that
* we decode the reg field of the ModRM byte before dispatching.
@ -526,7 +526,7 @@ X86Op0F.aOpGrp6Real = [
];
/*
* Unlike GRP6, GRP7 does not require separate real-mode and protected-mode dispatch tables, because all GRP7
* Unlike Grp6, Grp7 does not require separate real-mode and protected-mode dispatch tables, because all Grp7
* instructions are valid in both modes.
*/
X86Op0F.aOpGrp7 = [