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dolphin/Externals/Bochs_disasm/PowerPCDisasm.cpp

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/* $VER: ppc_disasm.c V1.1 (19.02.2000)
*
* Disassembler module for the PowerPC microprocessor family
* Copyright (c) 1998-2000 Frank Wille
*
* ppc_disasm.c is freeware and may be freely redistributed as long as
* no modifications are made and nothing is charged for it.
* Non-commercial usage is allowed without any restrictions.
* EVERY PRODUCT OR PROGRAM DERIVED DIRECTLY FROM MY SOURCE MAY NOT BE
* SOLD COMMERCIALLY WITHOUT PERMISSION FROM THE AUTHOR.
*
*
* v1.2 (31.07.2003) org
* modified for IBM PowerPC Gekko.
* v1.1 (19.02.2000) phx
* fabs wasn't recognized.
* v1.0 (30.01.2000) phx
* stfsx, stfdx, lfsx, lfdx, stfsux, stfdux, lfsux, lfdux, etc.
* printed "rd,ra,rb" as operands instead "fd,ra,rb".
* v0.4 (01.06.1999) phx
* 'stwm' shoud have been 'stmw'.
* v0.3 (17.11.1998) phx
* The OE-types (e.g. addo, subfeo, etc.) didn't work for all
* instructions.
* AA-form branches have an absolute destination.
* addze and subfze must not have a third operand.
* sc was not recognized.
* v0.2 (29.05.1998) phx
* Sign error. SUBI got negative immediate values.
* v0.1 (23.05.1998) phx
* First version, which implements all PowerPC instructions.
* v0.0 (09.05.1998) phx
* File created.
*/
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "PowerPCDisasm.h"
namespace PPCDisasm
{
/* version/revision */
#define PPCDISASM_VER 1
#define PPCDISASM_REV 1
/* typedefs */
typedef unsigned int ppc_word;
#undef BIGENDIAN
#undef LITTTLEENDIAN
/* endianess */
#define LITTLEENDIAN 0
/* general defines */
#define PPCIDXMASK 0xfc000000
#define PPCIDX2MASK 0x000007fe
#define PPCDMASK 0x03e00000
#define PPCAMASK 0x001f0000
#define PPCBMASK 0x0000f800
#define PPCCMASK 0x000007c0
#define PPCMMASK 0x0000003e
#define PPCCRDMASK 0x03800000
#define PPCCRAMASK 0x001c0000
#define PPCLMASK 0x00600000
#define PPCOE 0x00000400
#define PPCIDXSH 26
#define PPCDSH 21
#define PPCASH 16
#define PPCBSH 11
#define PPCCSH 6
#define PPCMSH 1
#define PPCCRDSH 23
#define PPCCRASH 18
#define PPCLSH 21
#define PPCIDX2SH 1
#define PPCGETIDX(x) (((x)&PPCIDXMASK)>>PPCIDXSH)
#define PPCGETD(x) (((x)&PPCDMASK)>>PPCDSH)
#define PPCGETA(x) (((x)&PPCAMASK)>>PPCASH)
#define PPCGETB(x) (((x)&PPCBMASK)>>PPCBSH)
#define PPCGETC(x) (((x)&PPCCMASK)>>PPCCSH)
#define PPCGETM(x) (((x)&PPCMMASK)>>PPCMSH)
#define PPCGETCRD(x) (((x)&PPCCRDMASK)>>PPCCRDSH)
#define PPCGETCRA(x) (((x)&PPCCRAMASK)>>PPCCRASH)
#define PPCGETL(x) (((x)&PPCLMASK)>>PPCLSH)
#define PPCGETIDX2(x) (((x)&PPCIDX2MASK)>>PPCIDX2SH)
/* Disassembler structure, the interface to the application */
struct DisasmPara_PPC {
ppc_word *instr; /* pointer to instruction to disassemble */
ppc_word *iaddr; /* instr.addr., usually the same as instr */
char *opcode; /* buffer for opcode, min. 10 chars. */
char *operands; /* operand buffer, min. 24 chars. */
/* changed by disassembler: */
unsigned char type; /* type of instruction, see below */
unsigned char flags; /* additional flags */
unsigned short sreg; /* register in load/store instructions */
ppc_word displacement; /* branch- or load/store displacement */
};
#define PPCINSTR_OTHER 0 /* no additional info for other instr. */
#define PPCINSTR_BRANCH 1 /* branch dest. = PC+displacement */
#define PPCINSTR_LDST 2 /* load/store instruction: displ(sreg) */
#define PPCINSTR_IMM 3 /* 16-bit immediate val. in displacement */
#define PPCF_ILLEGAL (1<<0) /* illegal PowerPC instruction */
#define PPCF_UNSIGNED (1<<1) /* unsigned immediate instruction */
#define PPCF_SUPER (1<<2) /* supervisor level instruction */
#define PPCF_64 (1<<3) /* 64-bit only instruction */
/* ppc_disasm.o prototypes */
#ifndef PPC_DISASM_C
extern ppc_word *PPC_Disassemble(struct DisasmPara_PPC *);
#endif
static const char *trap_condition[32] = {
NULL,"lgt","llt",NULL,"eq","lge","lle",NULL,
"gt",NULL,NULL,NULL,"ge",NULL,NULL,NULL,
"lt",NULL,NULL,NULL,"le",NULL,NULL,NULL,
"ne",NULL,NULL,NULL,NULL,NULL,NULL,NULL
};
static const char *cmpname[4] = {
"cmpw","cmpd","cmplw","cmpld"
};
static const char *b_ext[4] = {
"","l","a","la"
};
static const char *b_condition[8] = {
"ge","le","ne","ns","lt","gt","eq","so"
};
static const char *b_decr[16] = {
"nzf","zf",NULL,NULL,"nzt","zt",NULL,NULL,
"nz","z",NULL,NULL,"nz","z",NULL,NULL
};
static const char *regsel[2] = {
"","r"
};
static const char *oesel[2] = {
"","o"
};
static const char *rcsel[2] = {
"","."
};
static const char *ldstnames[] = {
"lwz","lwzu","lbz","lbzu","stw","stwu","stb","stbu","lhz","lhzu",
"lha","lhau","sth","sthu","lmw","stmw","lfs","lfsu","lfd","lfdu",
"stfs","stfsu","stfd","stfdu"
};
static const char *regnames[] = {
"r0", "sp", "rtoc", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"
};
static const char *spr_name(int i)
{
static char def[8];
switch (i)
{
case 1: return "XER";
case 8: return "LR";
case 9: return "CTR";
case 18: return "DSIR";
case 19: return "DAR";
case 22: return "DEC";
case 25: return "SDR1";
case 26: return "SRR0";
case 27: return "SRR1";
case 272: return "SPRG0";
case 273: return "SPRG1";
case 274: return "SPRG2";
case 275: return "SPRG3";
case 282: return "EAR";
case 287: return "PVR";
case 528: return "IBAT0U";
case 529: return "IBAT0L";
case 530: return "IBAT1U";
case 531: return "IBAT1L";
case 532: return "IBAT2U";
case 533: return "IBAT2L";
case 534: return "IBAT3U";
case 535: return "IBAT3L";
case 536: return "DBAT0U";
case 537: return "DBAT0L";
case 538: return "DBAT1U";
case 539: return "DBAT1L";
case 540: return "DBAT2U";
case 541: return "DBAT2L";
case 542: return "DBAT3U";
case 543: return "DBAT3L";
case 912: return "GQR0";
case 913: return "GQR1";
case 914: return "GQR2";
case 915: return "GQR3";
case 916: return "GQR4";
case 917: return "GQR5";
case 918: return "GQR6";
case 919: return "GQR7";
case 920: return "HID2";
case 921: return "WPAR";
case 922: return "DMA_U";
case 923: return "DMA_L";
case 936: return "UMMCR0";
case 937: return "UPMC1";
case 938: return "UPMC2";
case 939: return "USIA";
case 940: return "UMMCR1";
case 941: return "UPMC3";
case 942: return "UPMC4";
case 943: return "USDA";
case 952: return "MMCR0";
case 953: return "PMC1";
case 954: return "PMC2";
case 955: return "SIA";
case 956: return "MMCR1";
case 957: return "PMC3";
case 958: return "PMC4";
case 959: return "SDA";
case 1008: return "HID0";
case 1009: return "HID1";
case 1010: return "IABR";
case 1013: return "DABR";
case 1017: return "L2CR";
case 1019: return "ICTC";
case 1020: return "THRM1";
case 1021: return "THRM2";
case 1022: return "THRM3";
}
sprintf(def, "%i", i);
return def;
}
static void ierror(const char *errtxt,...)
/* display internal error and quit program */
{
va_list vl;
fprintf(stderr,"\nINTERNAL ERROR (PPC disassembler): ");
va_start(vl,errtxt);
vfprintf(stderr,errtxt,vl);
va_end(vl);
fprintf(stderr,".\nAborting.\n");
exit(1);
}
static ppc_word swapda(ppc_word w)
{
return ((w&0xfc00ffff)|((w&PPCAMASK)<<5)|((w&PPCDMASK)>>5));
}
static ppc_word swapab(ppc_word w)
{
return ((w&0xffe007ff)|((w&PPCBMASK)<<5)|((w&PPCAMASK)>>5));
}
static void ill(struct DisasmPara_PPC *dp,ppc_word in)
{
if (in == 0) {
strcpy(dp->opcode, "");
strcpy(dp->operands, "---");
} else {
strcpy(dp->opcode, "( ill )");
sprintf(dp->operands, "%08x", in);
}
dp->flags |= PPCF_ILLEGAL;
}
static void imm(struct DisasmPara_PPC *dp,ppc_word in,int uimm,int type,int hex)
/* Generate immediate instruction operand. */
/* type 0: D-mode, D,A,imm */
/* type 1: S-mode, A,S,imm */
/* type 2: S/D register is ignored (trap,cmpi) */
/* type 3: A register is ignored (li) */
{
int i = (int)(in & 0xffff);
dp->type = PPCINSTR_IMM;
if (!uimm) {
if (i > 0x7fff)
i -= 0x10000;
}
else
dp->flags |= PPCF_UNSIGNED;
dp->displacement = i;
switch (type) {
case 0:
sprintf(dp->operands,"%s, %s, %d",regnames[(int)PPCGETD(in)],regnames[(int)PPCGETA(in)],i);
break;
case 1:
if (hex)
sprintf(dp->operands,"%s, %s, 0x%.4X",regnames[(int)PPCGETA(in)],regnames[(int)PPCGETD(in)],i);
else
sprintf(dp->operands,"%s, %s, %d",regnames[(int)PPCGETA(in)],regnames[(int)PPCGETD(in)],i);
break;
case 2:
sprintf(dp->operands,"%s, %d",regnames[(int)PPCGETA(in)],i);
break;
case 3:
if (hex)
sprintf(dp->operands,"%s, 0x%.4X",regnames[(int)PPCGETD(in)],i);
else
sprintf(dp->operands,"%s, %d",regnames[(int)PPCGETD(in)],i);
break;
default:
ierror("imm(): Wrong type");
break;
}
}
static void ra_rb(char *s,ppc_word in)
{
sprintf(s,"%s, %s",regnames[(int)PPCGETA(in)],regnames[(int)PPCGETB(in)]);
}
static char *rd_ra_rb(char *s,ppc_word in,int mask)
{
static const char *fmt = "%s, ";
if (mask) {
if (mask & 4)
s += sprintf(s,fmt,regnames[(int)PPCGETD(in)]);
if (mask & 2)
s += sprintf(s,fmt,regnames[(int)PPCGETA(in)]);
if (mask & 1)
s += sprintf(s,fmt,regnames[(int)PPCGETB(in)]);
*--s = '\0';
*--s = '\0';
}
else
*s = '\0';
return (s);
}
static char *fd_ra_rb(char *s,ppc_word in,int mask)
{
static const char *ffmt = "f%d,";
static const char *rfmt = "%s,";
if (mask) {
if (mask & 4)
s += sprintf(s,ffmt,(int)PPCGETD(in));
if (mask & 2)
s += sprintf(s,rfmt,regnames[(int)PPCGETA(in)]);
if (mask & 1)
s += sprintf(s,rfmt,regnames[(int)PPCGETB(in)]);
*--s = '\0';
}
else
*s = '\0';
return (s);
}
static void trapi(struct DisasmPara_PPC *dp,ppc_word in,unsigned char dmode)
{
const char *cnd;
if (cnd = trap_condition[PPCGETD(in)]) {
dp->flags |= dmode;
sprintf(dp->opcode,"t%c%s",dmode?'d':'w',cnd);
imm(dp,in,0,2,0);
}
else
ill(dp,in);
}
static void cmpi(struct DisasmPara_PPC *dp,ppc_word in,int uimm)
{
char *oper = dp->operands;
int i = (int)PPCGETL(in);
if (i < 2) {
if (i)
dp->flags |= PPCF_64;
sprintf(dp->opcode,"%si",cmpname[uimm*2+i]);
if (i = (int)PPCGETCRD(in)) {
sprintf(oper,"cr%c,",'0'+i);
dp->operands += 4;
}
imm(dp,in,uimm,2,0);
dp->operands = oper;
}
else
ill(dp,in);
}
static void addi(struct DisasmPara_PPC *dp,ppc_word in,const char *ext)
{
if ((in&0x08000000) && !PPCGETA(in)) {
sprintf(dp->opcode,"l%s",ext); /* li, lis */
if (!strcmp(ext, "i"))
imm(dp,in,0,3,0);
else
imm(dp,in,1,3,1);
}
else {
sprintf(dp->opcode,"%s%s",(in&0x8000)?"sub":"add",ext);
if (in & 0x8000)
in = (in^0xffff) + 1;
imm(dp,in,1,0,0);
}
}
static int branch(struct DisasmPara_PPC *dp,ppc_word in, const char *bname,int aform,int bdisp)
/* build a branch instr. and return number of chars written to operand */
{
int bo = (int)PPCGETD(in);
int bi = (int)PPCGETA(in);
char y = (char)(bo & 1);
int opercnt = 0;
const char *ext = b_ext[aform*2+(int)(in&1)];
if (bdisp < 0)
y ^= 1;
y = y ? '+':'-';
if (bo & 4) {
/* standard case - no decrement */
if (bo & 16) {
/* branch always */
if (PPCGETIDX(in) != 16) {
sprintf(dp->opcode,"b%s%s",bname,ext);
}
else {
sprintf(dp->opcode,"bc%s",ext);
opercnt = sprintf(dp->operands,"%d, %d",bo,bi);
}
}
else {
/* branch conditional */
sprintf(dp->opcode,"b%s%s%s%c",b_condition[((bo&8)>>1)+(bi&3)],
bname,ext,y);
if (bi >= 4)
opercnt = sprintf(dp->operands,"cr%d",bi>>2);
}
}
else {
/* CTR is decremented and checked */
sprintf(dp->opcode,"bd%s%s%s%c",b_decr[bo>>1],bname,ext,y);
if (!(bo & 16))
opercnt = sprintf(dp->operands,"%d",bi);
}
return (opercnt);
}
static void bc(struct DisasmPara_PPC *dp,ppc_word in)
{
unsigned int d = (int)(in & 0xfffc);
int offs;
char *oper = dp->operands;
if (d & 0x8000) d |= 0xffff0000;
if (offs = branch(dp,in,"",(in&2)?1:0,d)) {
oper += offs;
*oper++ = ',';
}
if (in & 2) /* AA ? */
sprintf(dp->operands,"->0x%.8X",(unsigned int)d);
else
sprintf(oper,"->0x%.8X",(unsigned int)(*dp->iaddr) + d);
dp->type = PPCINSTR_BRANCH;
dp->displacement = (ppc_word)d;
}
static void bli(struct DisasmPara_PPC *dp,ppc_word in)
{
unsigned int d = (unsigned int)(in & 0x3fffffc);
if (d & 0x02000000) d |= 0xfc000000;
sprintf(dp->opcode,"b%s",b_ext[in&3]);
if (in & 2) /* AA ? */
sprintf(dp->operands,"->0x%.8X",(unsigned int)d);
else
sprintf(dp->operands,"->0x%.8X",(unsigned int)(*dp->iaddr) + d);
dp->type = PPCINSTR_BRANCH;
dp->displacement = (ppc_word)d;
}
static void mcrf(struct DisasmPara_PPC *dp,ppc_word in,char c)
{
if (!(in & 0x0063f801)) {
sprintf(dp->opcode,"mcrf%c",c);
sprintf(dp->operands,"cr%d, cr%d",(int)PPCGETCRD(in),(int)PPCGETCRA(in));
}
else
ill(dp,in);
}
static void crop(struct DisasmPara_PPC *dp,ppc_word in,const char *n1,const char *n2)
{
int crd = (int)PPCGETD(in);
int cra = (int)PPCGETA(in);
int crb = (int)PPCGETB(in);
if (!(in & 1)) {
sprintf(dp->opcode,"cr%s",(cra==crb && n2)?n2:n1);
if (cra == crb && n2)
sprintf(dp->operands,"%d, %d",crd,cra);
else
sprintf(dp->operands,"%d, %d, %d",crd,cra,crb);
}
else
ill(dp,in);
}
static void nooper(struct DisasmPara_PPC *dp,ppc_word in,const char *name,
unsigned char dmode)
{
if (in & (PPCDMASK|PPCAMASK|PPCBMASK|1)) {
ill(dp,in);
}
else {
dp->flags |= dmode;
strcpy(dp->opcode,name);
}
}
static unsigned int Helper_Mask(int mb, int me)
{
//first make 001111111111111 part
unsigned int begin = 0xFFFFFFFF >> mb;
//then make 000000000001111 part, which is used to flip the bits of the first one
unsigned int end = me < 31 ? (0xFFFFFFFF >> (me + 1)) : 0;
//do the bitflip
unsigned int mask = begin ^ end;
//and invert if backwards
if (me < mb)
return ~mask;
else
return mask;
}
static void rlw(struct DisasmPara_PPC *dp,ppc_word in,const char *name,int i)
{
int s = (int)PPCGETD(in);
int a = (int)PPCGETA(in);
int bsh = (int)PPCGETB(in);
int mb = (int)PPCGETC(in);
int me = (int)PPCGETM(in);
sprintf(dp->opcode,"rlw%s%c",name,in&1?'.':'\0');
sprintf(dp->operands,"%s, %s, %s%d, %d, %d (%08x)",regnames[a],regnames[s],regsel[i],bsh,mb,me,Helper_Mask(mb, me));
}
static void ori(struct DisasmPara_PPC *dp,ppc_word in,const char *name)
{
strcpy(dp->opcode,name);
imm(dp,in,1,1,1);
}
static void rld(struct DisasmPara_PPC *dp,ppc_word in,const char *name,int i)
{
int s = (int)PPCGETD(in);
int a = (int)PPCGETA(in);
int bsh = i ? (int)PPCGETB(in) : (int)(((in&2)<<4)+PPCGETB(in));
int m = (int)(in&0x7e0)>>5;
dp->flags |= PPCF_64;
sprintf(dp->opcode,"rld%s%c",name,in&1?'.':'\0');
sprintf(dp->operands,"%s, %s, %s%d, %d",regnames[a],regnames[s],regsel[i],bsh,m);
}
static void cmp(struct DisasmPara_PPC *dp,ppc_word in)
{
char *oper = dp->operands;
int i = (int)PPCGETL(in);
if (i < 2) {
if (i)
dp->flags |= PPCF_64;
strcpy(dp->opcode,cmpname[((in&PPCIDX2MASK)?2:0)+i]);
if (i = (int)PPCGETCRD(in))
oper += sprintf(oper,"cr%c,",'0'+i);
ra_rb(oper,in);
}
else
ill(dp,in);
}
static void trap(struct DisasmPara_PPC *dp,ppc_word in,unsigned char dmode)
{
const char *cnd;
int to = (int)PPCGETD(in);
if (cnd = trap_condition[to]) {
dp->flags |= dmode;
sprintf(dp->opcode,"t%c%s",dmode?'d':'w',cnd);
ra_rb(dp->operands,in);
}
else {
if (to == 31) {
if (dmode) {
dp->flags |= dmode;
strcpy(dp->opcode,"td");
strcpy(dp->operands,"31,0,0");
}
else
strcpy(dp->opcode,"trap");
}
else
ill(dp,in);
}
}
static void dab(struct DisasmPara_PPC *dp,ppc_word in,const char *name,int mask,
int smode,int chkoe,int chkrc,unsigned char dmode)
/* standard instruction: xxxx rD,rA,rB */
{
if (chkrc>=0 && ((in&1)!=(unsigned)chkrc)) {
ill(dp,in);
}
else {
dp->flags |= dmode;
if (smode)
in = swapda(in); /* rA,rS,rB */
sprintf(dp->opcode,"%s%s%s",name,
oesel[chkoe&&(in&PPCOE)],rcsel[(chkrc<0)&&(in&1)]);
rd_ra_rb(dp->operands,in,mask);
}
}
static void rrn(struct DisasmPara_PPC *dp,ppc_word in,const char *name,
int smode,int chkoe,int chkrc,unsigned char dmode)
/* Last operand is no register: xxxx rD,rA,NB */
{
char *s;
if (chkrc>=0 && ((in&1)!=(unsigned)chkrc)) {
ill(dp,in);
}
else {
dp->flags |= dmode;
if (smode)
in = swapda(in); /* rA,rS,NB */
sprintf(dp->opcode,"%s%s%s",name,
oesel[chkoe&&(in&PPCOE)],rcsel[(chkrc<0)&&(in&1)]);
s = rd_ra_rb(dp->operands,in,6);
sprintf(s,",%d",(int)PPCGETB(in));
}
}
static void mtcr(struct DisasmPara_PPC *dp,ppc_word in)
{
int s = (int)PPCGETD(in);
int crm = (int)(in&0x000ff000)>>12;
char *oper = dp->operands;
if (in & 0x00100801) {
ill(dp,in);
}
else {
sprintf(dp->opcode,"mtcr%c",crm==0xff?'\0':'f');
if (crm != 0xff)
oper += sprintf(oper,"0x%02x,",crm);
sprintf(oper,"%s",regnames[s]);
}
}
static void msr(struct DisasmPara_PPC *dp,ppc_word in,int smode)
{
int s = (int)PPCGETD(in);
int sr = (int)(in&0x000f0000)>>16;
if (in & 0x0010f801) {
ill(dp,in);
}
else {
dp->flags |= PPCF_SUPER;
sprintf(dp->opcode,"m%csr",smode?'t':'f');
if (smode)
sprintf(dp->operands,"%d, %s",sr,regnames[s]);
else
sprintf(dp->operands,"%s, %d",regnames[s],sr);
}
}
static void mspr(struct DisasmPara_PPC *dp,ppc_word in,int smode)
{
int d = (int)PPCGETD(in);
int spr = (int)((PPCGETB(in)<<5)+PPCGETA(in));
int fmt = 0;
const char *x;
if (in & 1) {
ill(dp,in);
}
else {
if (spr!=1 && spr!=8 && spr!=9)
dp->flags |= PPCF_SUPER;
switch (spr) {
case 1:
x = "xer";
break;
case 8:
x = "lr";
break;
case 9:
x = "ctr";
break;
default:
x = "spr";
fmt = 1;
break;
}
sprintf(dp->opcode,"m%c%s",smode?'t':'f',x);
if (fmt) {
if (smode)
sprintf(dp->operands,"%s, %s",spr_name(spr),regnames[d]);
else
sprintf(dp->operands,"%s, %s",regnames[d],spr_name(spr));
}
else
sprintf(dp->operands,"%s",regnames[d]);
}
}
static void mtb(struct DisasmPara_PPC *dp,ppc_word in)
{
int d = (int)PPCGETD(in);
int tbr = (int)((PPCGETB(in)<<5)+PPCGETA(in));
char *s = dp->operands;
char x;
if (in & 1) {
ill(dp,in);
}
else {
s += sprintf(s,"%s",regnames[d]);
switch (tbr) {
case 268:
x = 'l';
break;
case 269:
x = 'u';
break;
default:
x = '\0';
dp->flags |= PPCF_SUPER;
sprintf(s,",%d",tbr);
break;
}
sprintf(dp->opcode,"mftb%c",x);
}
}
static void sradi(struct DisasmPara_PPC *dp,ppc_word in)
{
int s = (int)PPCGETD(in);
int a = (int)PPCGETA(in);
int bsh = (int)(((in&2)<<4)+PPCGETB(in));
dp->flags |= PPCF_64;
sprintf(dp->opcode,"sradi%c",in&1?'.':'\0');
sprintf(dp->operands,"%s, %s, %d",regnames[a],regnames[s],bsh);
}
static const char *ldst_offs(unsigned int val)
{
static char buf[8];
if (val == 0)
{
return "0";
}
else
{
if (val & 0x8000)
{
sprintf(buf, "-0x%.4X", ((~val) & 0xffff) + 1);
}
else
{
sprintf(buf, "0x%.4X", val);
}
return buf;
}
}
static void ldst(struct DisasmPara_PPC *dp,ppc_word in,const char *name,
char reg,unsigned char dmode)
{
int s = (int)PPCGETD(in);
int a = (int)PPCGETA(in);
int d = (ppc_word)(in & 0xffff);
dp->type = PPCINSTR_LDST;
dp->flags |= dmode;
dp->sreg = (short)a;
// if (d >= 0x8000)
// d -= 0x10000;
dp->displacement = (ppc_word)d;
strcpy(dp->opcode,name);
if (reg == 'r')
{
sprintf(dp->operands,"%s, %s (%s)", regnames[s], ldst_offs(d), regnames[a]);
}
else
{
sprintf(dp->operands,"%c%d, %s (%s)",reg,s, ldst_offs(d), regnames[a]);
}
}
static void fdabc(struct DisasmPara_PPC *dp,ppc_word in, const char *name,
int mask,unsigned char dmode)
/* standard floating point instruction: xxxx fD,fA,fC,fB */
{
static const char *fmt = "f%d,";
char *s = dp->operands;
int err = 0;
dp->flags |= dmode;
sprintf(dp->opcode,"f%s%s",name,rcsel[in&1]);
s += sprintf(s,fmt,(int)PPCGETD(in));
if (mask & 4)
s += sprintf(s,fmt,(int)PPCGETA(in));
else
err |= (int)PPCGETA(in);
if (mask & 2)
s += sprintf(s,fmt,(int)PPCGETC(in));
else if (PPCGETC(in))
err |= (int)PPCGETC(in);
if (mask & 1)
s += sprintf(s,fmt,(int)PPCGETB(in));
else if (!(mask&8))
err |= (int)PPCGETB(in);
*(s-1) = '\0';
if (err)
ill(dp,in);
}
static void fdab(struct DisasmPara_PPC *dp,ppc_word in,const char *name,int mask)
/* indexed float instruction: xxxx fD,rA,rB */
{
strcpy(dp->opcode,name);
fd_ra_rb(dp->operands,in,mask);
}
static void fcmp(struct DisasmPara_PPC *dp,ppc_word in,char c)
{
if (in & 0x00600001) {
ill(dp,in);
}
else {
sprintf(dp->opcode,"fcmp%c",c);
sprintf(dp->operands,"cr%d,f%d,f%d",(int)PPCGETCRD(in),
(int)PPCGETA(in),(int)PPCGETB(in));
}
}
static void mtfsb(struct DisasmPara_PPC *dp,ppc_word in,int n)
{
if (in & (PPCAMASK|PPCBMASK)) {
ill(dp,in);
}
else {
sprintf(dp->opcode,"mtfsb%d%s",n,rcsel[in&1]);
sprintf(dp->operands,"%d",(int)PPCGETD(in));
}
}
//////////////////////////////////////////////////////////////////////////////////
//PAIRED
//////////////////////////////////////////////////////////////////////////////////
/*
sprintf(buf, "psq_lx", FD);
sprintf(buf, "psq_stx", FD);
sprintf(buf, "psq_lux", FD);
sprintf(buf, "psq_stux", FD);
*/
#define RA ((inst >> 16) & 0x1f)
#define RB ((inst >> 11) & 0x1f)
#define RC ((inst >> 6) & 0x1f)
#define RD ((inst >> 21) & 0x1f)
#define RS ((inst >> 21) & 0x1f)
#define FA ((inst >> 16) & 0x1f)
#define FB ((inst >> 11) & 0x1f)
#define FC ((inst >> 6) & 0x1f)
#define FD ((inst >> 21) & 0x1f)
#define FS ((inst >> 21) & 0x1f)
#define IMM (inst & 0xffff)
#define UIMM (inst & 0xffff)
#define OFS (inst & 0xffff)
#define OPCD ((inst >> 26) & 0x3f)
#define XO_10 ((inst >> 1) & 0x3ff)
#define XO_9 ((inst >> 1) & 0x1ff)
#define XO_5 ((inst >> 1) & 0x1f)
#define Rc (inst & 1)
#define SH ((inst >> 11) & 0x1f)
#define MB ((inst >> 6) & 0x1f)
#define ME ((inst >> 1) & 0x1f)
#define OE ((inst >> 10) & 1)
#define TO ((inst >> 21) & 0x1f)
#define CRFD ((inst >> 23) & 0x7)
#define CRFS ((inst >> 18) & 0x7)
#define CRBD ((inst >> 21) & 0x1f)
#define CRBA ((inst >> 16) & 0x1f)
#define CRBB ((inst >> 11) & 0x1f)
#define L ((inst >> 21) & 1)
#define NB ((inst >> 11) & 0x1f)
#define AA ((inst >> 1) & 1)
#define LK (inst & 1)
#define LI ((inst >> 2) & 0xffffff)
#define BO ((inst >> 21) & 0x1f)
#define BI ((inst >> 16) & 0x1f)
#define BD ((inst >> 2) & 0x3fff)
#define MTFSFI_IMM ((inst >> 12) & 0xf)
#define FM ((inst >> 17) & 0xff)
#define SR ((inst >> 16) & 0xf)
#define SPR ((inst >> 11) & 0x3ff)
#define TBR ((inst >> 11) & 0x3ff)
#define CRM ((inst >> 12) & 0xff)
inline int SEX12(unsigned int x)
{
return x & 0x800 ? (x|0xFFFFF000) : x;
}
static void ps(struct DisasmPara_PPC *dp,ppc_word inst)
{
ppc_word pc = *dp->iaddr;
char *op = dp->opcode;
char *pr = dp->operands;
switch ((inst>>1)&0x1F)
{
case 6:
strcpy(op, "ps_lux");
sprintf(pr, "p%u, (r%u + r%u)", FD, RA, RB);
return;
case 18:
strcpy(op, "ps_div");
sprintf(pr, "p%u, p%u/p%u", FD, FA, FB);
return;
case 20:
strcpy(op, "ps_sub");
sprintf(pr, "p%u, p%u-p%u", FD, FA, FB);
return;
case 21:
strcpy(op, "ps_add");
sprintf(pr, "p%u, p%u+p%u", FD, FA, FB);
return;
case 23:
strcpy(op, "ps_sel");
sprintf(pr, "p%u>=0?p%u:p%u", FD, FA, FC, FB);
return;
case 24:
strcpy(op, "ps_res");
sprintf(pr, "p%u, (1/p%u)", FD, FB);
return;
case 25:
strcpy(op, "ps_mul");
sprintf(pr, "p%u, p%u*p%u", FD, FA, FC);
return;
case 26: //rsqrte
strcpy(op, "ps_rsqrte");
sprintf(pr, "p%u, p%u", FD, FB);
return;
case 28: //msub
strcpy(op, "ps_msub");
sprintf(pr, "p%u, p%u*p%u-p%u", FD, FA, FC, FB);
return;
case 29: //madd
strcpy(op, "ps_madd");
sprintf(pr, "p%u, p%u*p%u+p%u", FD, FA, FC, FB);
return;
case 30: //nmsub
strcpy(op, "ps_nmsub");
sprintf(pr, "p%u, -(p%u*p%u-p%u)", FD, FA, FC, FB);
return;
case 31: //nmadd
strcpy(op, "ps_nmadd");
sprintf(pr, "p%u, -(p%u*p%u+p%u)", FD, FA, FC, FB);
return;
case 10:
strcpy(op, "ps_sum0");
sprintf(pr, "p%u, 0=p%u+p%u, 1=p%u", FD, FA, FB, FC);
return;
case 11:
strcpy(op, "ps_sum1");
sprintf(pr, "p%u, 0=p%u, 1=p%u+p%u", FD, FC, FA, FB);
return;
case 12:
strcpy(op, "ps_muls0");
sprintf(pr, "p%u, p%u*p%u[0]", FD, FA, FC);
return;
case 13:
strcpy(op, "ps_muls1");
sprintf(pr, "p%u, p%u*p%u[1]", FD, FA, FC);
return;
case 14:
strcpy(op, "ps_madds0");
sprintf(pr, "p%u, p%u*p%u[0]+p%u", FD, FA, FC, FB);
return;
case 15:
strcpy(op, "ps_madds1");
sprintf(pr, "p%u, p%u*p%u[1]+p%u", FD, FA, FC, FB);
return;
}
switch ((inst>>1)&0x3FF)
{
//10-bit suckers (?)
case 40: //nmadd
strcpy(op, "ps_neg");
sprintf(pr, "p%u, -p%u", FD, FB);
return;
case 72: //nmadd
strcpy(op, "ps_mr");
sprintf(pr, "p%u, p%u", FD, FB);
return;
case 136:
strcpy(op, "ps_nabs");
sprintf(pr, "p%u, -|p%u|", FD, FB);
return;
case 264:
strcpy(op, "ps_abs");
sprintf(pr, "p%u, |p%u|", FD, FB);
return;
case 0:
strcpy(op, "ps_cmpu0");
sprintf(pr, "ps_cmpu0", FD);
return;
case 32:
strcpy(op,"ps_cmpq0");
sprintf(pr, "ps_cmpo0", FD);
return;
case 64:
strcpy(op,"ps_cmpu1");
sprintf(pr, "ps_cmpu1", FD);
return;
case 96:
strcpy(op,"ps_cmpo1");
sprintf(pr, "ps_cmpo1", FD);
return;
case 528:
strcpy(op,"ps_merge00");
sprintf(pr, "p%u, p%u[0],p%u[0]", FD, FA, FB);
return;
case 560:
strcpy(op,"ps_merge01");
sprintf(pr, "p%u, p%u[0],p%u[1]", FD, FA, FB);
return;
case 592:
strcpy(op,"ps_merge10");
sprintf(pr, "p%u, p%u[1],p%u[0]", FD, FA, FB);
return;
case 624:
strcpy(op,"ps_merge11");
sprintf(pr, "p%u, p%u[1],p%u[1]", FD, FA, FB);
return;
case 1014:
strcpy(op,"dcbz_l");
sprintf(pr, "");
return;
}
// default:
sprintf(op, "ps_%i",((inst>>1)&0x1f));
strcpy(pr,"---");
return;
}
static void ps_mem(struct DisasmPara_PPC *dp,ppc_word inst)
{
ppc_word pc = *dp->iaddr;
char *op = dp->opcode;
char *pr = dp->operands;
switch (PPCGETIDX(inst))
{
case 56:
strcpy(op,"psq_l");
sprintf(pr, "p%u, %i(r%u)", RS, SEX12(inst&0xFFF), RA);
break;
case 57:
strcpy(op,"psq_lu");
sprintf(pr, "", FD);
break;
case 60:
strcpy(op,"psq_st");
sprintf(pr, "%i(r%u), p%u", SEX12(inst&0xFFF), RA, RS);
break;
case 61:
strcpy(op,"psq_stu");
sprintf(pr, "r%u, p%u ?", RA, RS);
break;
}
}
ppc_word *PPC_Disassemble(struct DisasmPara_PPC *dp)
/* Disassemble PPC instruction and return a pointer to the next */
/* instruction, or NULL if an error occured. */
{
ppc_word in = *(dp->instr);
if (!dp->opcode || !dp->operands)
return NULL; /* no buffers */
#if LITTLEENDIAN
in = (in & 0xff)<<24 | (in & 0xff00)<<8 | (in & 0xff0000)>>8 |
(in & 0xff000000)>>24;
#endif
dp->type = PPCINSTR_OTHER;
dp->flags = 0;
*(dp->operands) = 0;
switch (PPCGETIDX(in))
{
case 0:
{
int block = in & 0x3FFFFFF;
if (block) {
sprintf(dp->opcode, "JITblock");
sprintf(dp->operands, "%i", block);
} else {
strcpy(dp->opcode, "");
strcpy(dp->operands, "---");
}
}
break;
case 1:
sprintf(dp->opcode,"HLE");
//HLE call
break;
case 2:
trapi(dp,in,PPCF_64); /* tdi */
break;
case 3:
trapi(dp,in,0); /* twi */
break;
case 4:
ps(dp,in);
break;
case 56:
case 57:
case 60:
case 61:
ps_mem(dp,in);
break;
case 7:
strcpy(dp->opcode,"mulli");
imm(dp,in,0,0,0);
break;
case 8:
strcpy(dp->opcode,"subfic");
imm(dp,in,0,0,0);
break;
case 10:
cmpi(dp,in,1); /* cmpli */
break;
case 11:
cmpi(dp,in,0); /* cmpi */
break;
case 12:
addi(dp,in,"ic"); /* addic */
break;
case 13:
addi(dp,in,"ic."); /* addic. */
break;
case 14:
addi(dp,in,"i"); /* addi */
break;
case 15:
addi(dp,in,"is"); /* addis */
break;
case 16:
bc(dp,in);
break;
case 17:
if ((in & ~PPCIDXMASK) == 2)
strcpy(dp->opcode,"sc");
else
ill(dp,in);
break;
case 18:
bli(dp,in);
break;
case 19:
switch (PPCGETIDX2(in)) {
case 0:
mcrf(dp,in,'\0'); /* mcrf */
break;
case 16:
branch(dp,in,"lr",0,0); /* bclr */
break;
case 33:
crop(dp,in,"nor","not"); /* crnor */
break;
case 50:
nooper(dp,in,"rfi",PPCF_SUPER);
break;
case 129:
crop(dp,in,"andc",NULL); /* crandc */
break;
case 150:
nooper(dp,in,"isync",0);
break;
case 193:
crop(dp,in,"xor","clr"); /* crxor */
break;
case 225:
crop(dp,in,"nand",NULL); /* crnand */
break;
case 257:
crop(dp,in,"and",NULL); /* crand */
break;
case 289:
crop(dp,in,"eqv","set"); /* creqv */
break;
case 417:
crop(dp,in,"orc",NULL); /* crorc */
break;
case 449:
crop(dp,in,"or","move"); /* cror */
break;
case 528:
branch(dp,in,"ctr",0,0); /* bcctr */
break;
default:
ill(dp,in);
break;
}
break;
case 20:
rlw(dp,in,"imi",0); /* rlwimi */
break;
case 21:
rlw(dp,in,"inm",0); /* rlwinm */
break;
case 23:
rlw(dp,in,"nm",1); /* rlwnm */
break;
case 24:
if (in & ~PPCIDXMASK)
ori(dp,in,"ori");
else
strcpy(dp->opcode,"nop");
break;
case 25:
ori(dp,in,"oris");
break;
case 26:
ori(dp,in,"xori");
break;
case 27:
ori(dp,in,"xoris");
break;
case 28:
ori(dp,in,"andi.");
break;
case 29:
ori(dp,in,"andis.");
break;
case 30:
switch (in & 0x1c) {
case 0:
rld(dp,in,"icl",0); /* rldicl */
break;
case 1:
rld(dp,in,"icr",0); /* rldicr */
break;
case 2:
rld(dp,in,"ic",0); /* rldic */
break;
case 3:
rld(dp,in,"imi",0); /* rldimi */
break;
case 4:
rld(dp,in,in&2?"cl":"cr",1); /* rldcl, rldcr */
break;
default:
ill(dp,in);
break;
}
break;
case 31:
switch (PPCGETIDX2(in)) {
case 0:
case 32:
if (in & 1)
ill(dp,in);
else
cmp(dp,in); /* cmp, cmpl */
break;
case 4:
if (in & 1)
ill(dp,in);
else
trap(dp,in,0); /* tw */
break;
case 8:
case (PPCOE>>1)+8:
dab(dp,swapab(in),"subc",7,0,1,-1,0);
break;
case 9:
dab(dp,in,"mulhdu",7,0,0,-1,PPCF_64);
break;
case 10:
case (PPCOE>>1)+10:
dab(dp,in,"addc",7,0,1,-1,0);
break;
case 11:
dab(dp,in,"mulhwu",7,0,0,-1,0);
break;
case 19:
if (in & (PPCAMASK|PPCBMASK))
ill(dp,in);
else
dab(dp,in,"mfcr",4,0,0,0,0);
break;
case 20:
dab(dp,in,"lwarx",7,0,0,0,0);
break;
case 21:
dab(dp,in,"ldx",7,0,0,0,PPCF_64);
break;
case 23:
dab(dp,in,"lwzx",7,0,0,0,0);
break;
case 24:
dab(dp,in,"slw",7,1,0,-1,0);
break;
case 26:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"cntlzw",6,1,0,-1,0);
break;
case 27:
dab(dp,in,"sld",7,1,0,-1,PPCF_64);
break;
case 28:
dab(dp,in,"and",7,1,0,-1,0);
break;
case 40:
case (PPCOE>>1)+40:
dab(dp,swapab(in),"sub",7,0,1,-1,0);
break;
case 53:
dab(dp,in,"ldux",7,0,0,0,PPCF_64);
break;
case 54:
if (in & PPCDMASK)
ill(dp,in);
else
dab(dp,in,"dcbst",3,0,0,0,0);
break;
case 55:
dab(dp,in,"lwzux",7,0,0,0,0);
break;
case 58:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"cntlzd",6,1,0,-1,PPCF_64);
break;
case 60:
dab(dp,in,"andc",7,1,0,-1,0);
break;
case 68:
trap(dp,in,PPCF_64); /* td */
break;
case 73:
dab(dp,in,"mulhd",7,0,0,-1,PPCF_64);
break;
case 75:
dab(dp,in,"mulhw",7,0,0,-1,0);
break;
case 83:
if (in & (PPCAMASK|PPCBMASK))
ill(dp,in);
else
dab(dp,in,"mfmsr",4,0,0,0,PPCF_SUPER);
break;
case 84:
dab(dp,in,"ldarx",7,0,0,0,PPCF_64);
break;
case 86:
if (in & PPCDMASK)
ill(dp,in);
else
dab(dp,in,"dcbf",3,0,0,0,0);
break;
case 87:
dab(dp,in,"lbzx",7,0,0,0,0);
break;
case 104:
case (PPCOE>>1)+104:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"neg",6,0,1,-1,0);
break;
case 119:
dab(dp,in,"lbzux",7,0,0,0,0);
break;
case 124:
if (PPCGETD(in) == PPCGETB(in))
dab(dp,in,"not",6,1,0,-1,0);
else
dab(dp,in,"nor",7,1,0,-1,0);
break;
case 136:
case (PPCOE>>1)+136:
dab(dp,in,"subfe",7,0,1,-1,0);
break;
case 138:
case (PPCOE>>1)+138:
dab(dp,in,"adde",7,0,1,-1,0);
break;
case 144:
mtcr(dp,in);
break;
case 146:
if (in & (PPCAMASK|PPCBMASK))
ill(dp,in);
else
dab(dp,in,"mtmsr",4,0,0,0,PPCF_SUPER);
break;
case 149:
dab(dp,in,"stdx",7,0,0,0,PPCF_64);
break;
case 150:
dab(dp,in,"stwcx.",7,0,0,1,0);
break;
case 151:
dab(dp,in,"stwx",7,0,0,0,0);
break;
case 181:
dab(dp,in,"stdux",7,0,0,0,PPCF_64);
break;
case 183:
dab(dp,in,"stwux",7,0,0,0,0);
break;
case 200:
case (PPCOE>>1)+200:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"subfze",6,0,1,-1,0);
break;
case 202:
case (PPCOE>>1)+202:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"addze",6,0,1,-1,0);
break;
case 210:
msr(dp,in,1); /* mfsr */
break;
case 214:
dab(dp,in,"stdcx.",7,0,0,1,PPCF_64);
break;
case 215:
dab(dp,in,"stbx",7,0,0,0,0);
break;
case 232:
case (PPCOE>>1)+232:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"subfme",6,0,1,-1,0);
break;
case 233:
case (PPCOE>>1)+233:
dab(dp,in,"mulld",7,0,1,-1,PPCF_64);
break;
case 234:
case (PPCOE>>1)+234:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"addme",6,0,1,-1,0);
break;
case 235:
case (PPCOE>>1)+235:
dab(dp,in,"mullw",7,0,1,-1,0);
break;
case 242:
if (in & PPCAMASK)
ill(dp,in);
else
dab(dp,in,"mtsrin",5,0,0,0,PPCF_SUPER);
break;
case 246:
if (in & PPCDMASK)
ill(dp,in);
else
dab(dp,in,"dcbtst",3,0,0,0,0);
break;
case 247:
dab(dp,in,"stbux",7,0,0,0,0);
break;
case 266:
case (PPCOE>>1)+266:
dab(dp,in,"add",7,0,1,-1,0);
break;
case 278:
if (in & PPCDMASK)
ill(dp,in);
else
dab(dp,in,"dcbt",3,0,0,0,0);
break;
case 279:
dab(dp,in,"lhzx",7,0,0,0,0);
break;
case 284:
dab(dp,in,"eqv",7,1,0,-1,0);
break;
case 306:
if (in & (PPCDMASK|PPCAMASK))
ill(dp,in);
else
dab(dp,in,"tlbie",1,0,0,0,PPCF_SUPER);
break;
case 310:
dab(dp,in,"eciwx",7,0,0,0,0);
break;
case 311:
dab(dp,in,"lhzux",7,0,0,0,0);
break;
case 316:
dab(dp,in,"xor",7,1,0,-1,0);
break;
case 339:
mspr(dp,in,0); /* mfspr */
break;
case 341:
dab(dp,in,"lwax",7,0,0,0,PPCF_64);
break;
case 343:
dab(dp,in,"lhax",7,0,0,0,0);
break;
case 370:
nooper(dp,in,"tlbia",PPCF_SUPER);
break;
case 371:
mtb(dp,in); /* mftb */
break;
case 373:
dab(dp,in,"lwaux",7,0,0,0,PPCF_64);
break;
case 375:
dab(dp,in,"lhaux",7,0,0,0,0);
break;
case 407:
dab(dp,in,"sthx",7,0,0,0,0);
break;
case 412:
dab(dp,in,"orc",7,1,0,-1,0);
break;
case 413:
sradi(dp,in); /* sradi */
break;
case 434:
if (in & (PPCDMASK|PPCAMASK))
ill(dp,in);
else
dab(dp,in,"slbie",1,0,0,0,PPCF_SUPER|PPCF_64);
break;
case 438:
dab(dp,in,"ecowx",7,0,0,0,0);
break;
case 439:
dab(dp,in,"sthux",7,0,0,0,0);
break;
case 444:
if (PPCGETD(in) == PPCGETB(in))
dab(dp,in,"mr",6,1,0,-1,0);
else
dab(dp,in,"or",7,1,0,-1,0);
break;
case 457:
case (PPCOE>>1)+457:
dab(dp,in,"divdu",7,0,1,-1,PPCF_64);
break;
case 459:
case (PPCOE>>1)+459:
dab(dp,in,"divwu",7,0,1,-1,0);
break;
case 467:
mspr(dp,in,1); /* mtspr */
break;
case 470:
if (in & PPCDMASK)
ill(dp,in);
else
dab(dp,in,"dcbi",3,0,0,0,0);
break;
case 476:
dab(dp,in,"nand",7,1,0,-1,0);
break;
case 489:
case (PPCOE>>1)+489:
dab(dp,in,"divd",7,0,1,-1,PPCF_64);
break;
case 491:
case (PPCOE>>1)+491:
dab(dp,in,"divw",7,0,1,-1,0);
break;
case 498:
nooper(dp,in,"slbia",PPCF_SUPER|PPCF_64);
break;
case 512:
if (in & 0x007ff801)
ill(dp,in);
else {
strcpy(dp->opcode,"mcrxr");
sprintf(dp->operands,"cr%d",(int)PPCGETCRD(in));
}
break;
case 533:
dab(dp,in,"lswx",7,0,0,0,0);
break;
case 534:
dab(dp,in,"lwbrx",7,0,0,0,0);
break;
case 535:
fdab(dp,in,"lfsx",7);
break;
case 536:
dab(dp,in,"srw",7,1,0,-1,0);
break;
case 539:
dab(dp,in,"srd",7,1,0,-1,PPCF_64);
break;
case 566:
nooper(dp,in,"tlbsync",PPCF_SUPER);
break;
case 567:
fdab(dp,in,"lfsux",7);
break;
case 595:
msr(dp,in,0); /* mfsr */
break;
case 597:
rrn(dp,in,"lswi",0,0,0,0);
break;
case 598:
nooper(dp,in,"sync",PPCF_SUPER);
break;
case 599:
fdab(dp,in,"lfdx",7);
break;
case 631:
fdab(dp,in,"lfdux",7);
break;
case 659:
if (in & PPCAMASK)
ill(dp,in);
else
dab(dp,in,"mfsrin",5,0,0,0,PPCF_SUPER);
break;
case 661:
dab(dp,in,"stswx",7,0,0,0,0);
break;
case 662:
dab(dp,in,"stwbrx",7,0,0,0,0);
break;
case 663:
fdab(dp,in,"stfsx",7);
break;
case 695:
fdab(dp,in,"stfsux",7);
break;
case 725:
rrn(dp,in,"stswi",0,0,0,0);
break;
case 727:
fdab(dp,in,"stfdx",7);
break;
case 759:
fdab(dp,in,"stfdux",7);
break;
case 790:
dab(dp,in,"lhbrx",7,0,0,0,0);
break;
case 792:
dab(dp,in,"sraw",7,1,0,-1,0);
break;
case 794:
dab(dp,in,"srad",7,1,0,-1,PPCF_64);
break;
case 824:
rrn(dp,in,"srawi",1,0,-1,0);
break;
case 854:
nooper(dp,in,"eieio",PPCF_SUPER);
break;
case 918:
dab(dp,in,"sthbrx",7,0,0,0,0);
break;
case 922:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"extsh",6,1,0,-1,0);
break;
case 954:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"extsb",6,1,0,-1,0);
break;
case 982:
if (in & PPCDMASK)
ill(dp,in);
else
dab(dp,in,"icbi",3,0,0,0,0);
break;
case 983:
fdab(dp,in,"stfiwx",7);
break;
case 986:
if (in & PPCBMASK)
ill(dp,in);
else
dab(dp,in,"extsw",6,1,0,-1,PPCF_64);
break;
case 1014:
if (in & PPCDMASK)
ill(dp,in);
else
dab(dp,in,"dcbz",3,0,0,0,0);
break;
default:
ill(dp,in);
break;
}
break;
case 32:
case 33:
case 34:
case 35:
case 36:
case 37:
case 38:
case 39:
case 40:
case 41:
case 42:
case 43:
case 44:
case 45:
case 46:
case 47:
ldst(dp,in,ldstnames[PPCGETIDX(in)-32],'r',0);
break;
case 48:
case 49:
case 50:
case 51:
case 52:
case 53:
case 54:
case 55:
ldst(dp,in,ldstnames[PPCGETIDX(in)-32],'f',0);
break;
case 58:
switch (in & 3) {
case 0:
ldst(dp,in&~3,"ld",'r',PPCF_64);
break;
case 1:
ldst(dp,in&~3,"ldu",'r',PPCF_64);
break;
case 2:
ldst(dp,in&~3,"lwa",'r',PPCF_64);
break;
default:
ill(dp,in);
break;
}
break;
case 59:
switch (in & 0x3e) {
case 36:
fdabc(dp,in,"divs",5,0);
break;
case 40:
fdabc(dp,in,"subs",5,0);
break;
case 42:
fdabc(dp,in,"adds",5,0);
break;
case 44:
fdabc(dp,in,"sqrts",2,0);
break;
case 48:
fdabc(dp,in,"res",2,0);
break;
case 50:
fdabc(dp,in,"muls",6,0);
break;
case 56:
fdabc(dp,in,"msubs",7,0);
break;
case 58:
fdabc(dp,in,"madds",7,0);
break;
case 60:
fdabc(dp,in,"nmsubs",7,0);
break;
case 62:
fdabc(dp,in,"nmadds",7,0);
break;
default:
ill(dp,in);
break;
}
break;
case 62:
switch (in & 3) {
case 0:
ldst(dp,in&~3,"std",'r',PPCF_64);
break;
case 1:
ldst(dp,in&~3,"stdu",'r',PPCF_64);
break;
default:
ill(dp,in);
break;
}
break;
case 63:
if (in & 32) {
switch (in & 0x1e) {
case 4:
fdabc(dp,in,"div",5,0);
break;
case 8:
fdabc(dp,in,"sub",5,0);
break;
case 10:
fdabc(dp,in,"add",5,0);
break;
case 12:
fdabc(dp,in,"sqrt",2,0);
break;
case 14:
fdabc(dp,in,"sel",7,0);
break;
case 18:
fdabc(dp,in,"mul",6,0);
break;
case 20:
fdabc(dp,in,"rsqrte",1,0);
break;
case 24:
fdabc(dp,in,"msub",7,0);
break;
case 26:
fdabc(dp,in,"madd",7,0);
break;
case 28:
fdabc(dp,in,"nmsub",7,0);
break;
case 30:
fdabc(dp,in,"nmadd",7,0);
break;
case 52:
sprintf(dp->opcode, "XXX dp 52");
break;
default:
ill(dp,in);
break;
}
}
else {
switch (PPCGETIDX2(in)) {
case 0:
fcmp(dp,in,'u');
break;
case 12:
fdabc(dp,in,"rsp",1,0); // 10
break;
case 14:
fdabc(dp,in,"ctiw",1,0); // 10
break;
case 15:
fdabc(dp,in,"ctiwz",1,0); // 10
break;
case 32:
fcmp(dp,in,'o');
break;
case 38:
mtfsb(dp,in,1);
break;
case 40:
fdabc(dp,in,"neg",10,0);
break;
case 64:
mcrf(dp,in,'s'); /* mcrfs */
break;
case 70:
mtfsb(dp,in,0);
break;
case 72:
fdabc(dp,in,"mr",10,0);
break;
case 134:
if (!(in & 0x006f0800)) {
sprintf(dp->opcode,"mtfsfi%s",rcsel[in&1]);
sprintf(dp->operands,"cr%d,%d",(int)PPCGETCRD(in),
(int)(in & 0xf000)>>12);
}
else
ill(dp,in);
break;
case 136:
fdabc(dp,in,"nabs",10,0);
break;
case 264:
fdabc(dp,in,"abs",10,0);
break;
case 583:
if (in & (PPCAMASK|PPCBMASK))
ill(dp,in);
else
dab(dp,in,"mffs",4,0,0,-1,0);
break;
case 711:
if (!(in & 0x02010000)) {
sprintf(dp->opcode,"mtfsf%s",rcsel[in&1]);
sprintf(dp->operands,"0x%x,%d",
(unsigned)(in & 0x01fe)>>17,(int)PPCGETB(in));
}
else
ill(dp,in);
break;
case 814:
fdabc(dp,in,"fctid",10,PPCF_64);
break;
case 815:
fdabc(dp,in,"fctidz",10,PPCF_64);
break;
case 846:
fdabc(dp,in,"fcfid",10,PPCF_64);
break;
default:
ill(dp,in);
break;
}
}
break;
default:
ill(dp,in);
break;
}
return (dp->instr + 1);
}
} // namespace
// What were MS thinking?
#ifdef _WIN32
#define snprintf _snprintf
#endif
// simplified interface
void DisassembleGekko(unsigned int opcode, unsigned int curInstAddr, char *dest, int max_size)
{
char opcodeStr[64], operandStr[64];
PPCDisasm::DisasmPara_PPC dp;
unsigned int opc, adr;
opc = opcode;
adr = curInstAddr;
dp.opcode = opcodeStr;
dp.operands = operandStr;
dp.instr = (PPCDisasm::ppc_word *)&opc;
dp.iaddr = (PPCDisasm::ppc_word *)&adr;
PPCDisasm::PPC_Disassemble(&dp);
snprintf(dest, max_size, "%s\t%s", opcodeStr, operandStr);
}
static const char *gprnames[] =
{
" r0", " r1", " r2", " r3", " r4", " r5", " r6", " r7",
" r8", " r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31"
};
const char *GetGPRName(unsigned int index)
{
if (index < 32)
return gprnames[index];
return 0;
}
static const char *fprnames[] =
{
" f0", " f1", " f2", " f3", " f4", " f5", " f6", " f7",
" f8", " f9", "f10", "f11", "f12", "f13", "f14", "f15",
"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31"
};
const char *GetFPRName(unsigned int index)
{
if (index < 32)
return fprnames[index];
return 0;
}
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