1 line
61 KiB
C
1 line
61 KiB
C
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/*
M68KITAB.c
Copyright (C) 2007 Paul C. Pratt
You can redistribute this file and/or modify it under the terms
of version 2 of the GNU General Public License as published by
the Free Software Foundation. You should have received a copy
of the license along with this file; see the file COPYING.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
license for more details.
*/
/*
Motorola 68K Instructions TABle
*/
#ifndef AllFiles
#include "SYSDEPNS.h"
#endif
#include "MYOSGLUE.h"
#include "EMCONFIG.h"
#include "GLOBGLUE.h"
#include "M68KITAB.h"
struct WorkR {
/* expected size : 8 bytes */
ui5b opcode;
ui5b opsize;
ui4r MainClass;
#if WantCycByPriOp
ui4r Cycles;
#endif
DecOpR DecOp;
};
typedef struct WorkR WorkR;
#define b76(p) ((p->opcode >> 6) & 3)
#define b8(p) ((p->opcode >> 8) & 1)
#define mode(p) ((p->opcode >> 3) & 7)
#define reg(p) (p->opcode & 7)
#define md6(p) ((p->opcode >> 6) & 7)
#define rg9(p) ((p->opcode >> 9) & 7)
enum {
kAddrValidAny,
kAddrValidData,
kAddrValidDataAlt,
kAddrValidControl,
kAddrValidControlAlt,
kAddrValidAltMem,
kNumAddrValids
};
#define kAddrValidMaskAny (1 << kAddrValidAny)
#define kAddrValidMaskData (1 << kAddrValidData)
#define kAddrValidMaskDataAlt (1 << kAddrValidDataAlt)
#define kAddrValidMaskControl (1 << kAddrValidControl)
#define kAddrValidMaskControlAlt (1 << kAddrValidControlAlt)
#define kAddrValidMaskAltMem (1 << kAddrValidAltMem)
#define CheckInSet(v, m) (0 != ((1 << (v)) & (m)))
#define kMyAvgCycPerInstr (10 * kCycleScale + (40 * kCycleScale / 64))
LOCALFUNC MayNotInline ui3r GetArgkRegSz(WorkR *p)
{
ui3r CurArgk;
switch (p->opsize) {
case 1:
CurArgk = kArgkRegB;
break;
case 2:
default: /* keep compiler happy */
CurArgk = kArgkRegW;
break;
case 4:
CurArgk = kArgkRegL;
break;
}
return CurArgk;
}
LOCALFUNC MayNotInline ui3r GetArgkMemSz(WorkR *p)
{
ui3r CurArgk;
switch (p->opsize) {
case 1:
CurArgk = kArgkMemB;
break;
case 2:
default: /* keep compiler happy */
CurArgk = kArgkMemW;
break;
case 4:
CurArgk = kArgkMemL;
break;
}
return CurArgk;
}
#if WantCycByPriOp
LOCALFUNC MayNotInline ui4r OpEACalcCyc(WorkR *p, ui3r m, ui3r r)
{
ui4r v;
switch (m) {
case 0:
case 1:
v = 0;
break;
case 2:
v = ((4 == p->opsize)
? (8 * kCycleScale + 2 * RdAvgXtraCyc)
: (4 * kCycleScale + RdAvgXtraCyc));
break;
case 3:
v = ((4 == p->opsize)
? (8 * kCycleScale + 2 * RdAvgXtraCyc)
: (4 * kCycleScale + RdAvgXtraCyc));
break;
case 4:
v = ((4 == p->opsize)
? (10 * kCycleScale + 2 * RdAvgXtraCyc)
: (6 * kCycleScale + RdAvgXtraCyc));
break;
case 5:
v = ((4 == p->opsize)
? (12 * kCycleScale + 3 * RdAvgXtraCyc)
: (8 * kCycleScale + 2 * RdAvgXtraCyc));
break;
case 6:
v = ((4 == p->opsize)
? (14 * kCycleScale + 3 * RdAvgXtraCyc)
: (10 * kCycleScale + 2 * RdAvgXtraCyc));
break;
case 7:
switch (r) {
case 0:
v = ((4 == p->opsize)
? (12 * kCycleScale + 3 * RdAvgXtraCyc)
: (8 * kCycleScale + 2 * RdAvgXtraCyc));
break;
case 1:
v = ((4 == p->opsize)
? (16 * kCycleScale + 4 * RdAvgXtraCyc)
: (12 * kCycleScale + 3 * RdAvgXtraCyc));
break;
case 2:
v = ((4 == p->opsize)
? (12 * kCycleScale + 3 * RdAvgXtraCyc)
: (8 * kCycleScale + 2 * RdAvgXtraCyc));
break;
case 3:
v = ((4 == p->opsize)
? (14 * kCycleScale + 3 * RdAvgXtraCyc)
: (10 * kCycleScale + 2 * RdAvgXtraCyc));
break;
case 4:
v = ((4 == p->opsize)
? (8 * kCycleScale + 2 * RdAvgXtraCyc)
: (4 * kCycleScale + RdAvgXtraCyc));
break;
default:
v = 0;
break;
}
break;
default: /* keep compiler happy */
v = 0;
break;
}
return v;
}
#endif
#if WantCycByPriOp
LOCALFUNC MayNotInline ui4r OpEADestCalcCyc(WorkR *p, ui3r m, ui3r r)
{
ui4r v;
switch (m) {
case 0:
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