Initial revision

3 files changed, 858 insertions, 0 deletions

diff --git a/include/bedbug/bedbug.h b/include/bedbug/bedbug.h
new file mode 100644
index 0000000000..471215ee02
--- /dev/null
+++ b/include/bedbug/bedbug.h
@@ -0,0 +1,42 @@
+/* $Id$ */
+
+#ifndef _BEDBUG_H
+#define _BEDBUG_H
+
+#ifndef NULL
+#define NULL	0
+#endif
+
+#define _USE_PROTOTYPES
+
+#ifndef isblank
+#define isblank(c) isspace((int)(c))
+#endif
+
+#ifndef __P
+#if defined(_USE_PROTOTYPES) && (defined(__STDC__) || defined(__cplusplus))
+#define __P(protos)	protos		/* full-blown ANSI C */
+#else
+#define __P(protos)	()		/* traditional C preprocessor */
+#endif
+#endif
+
+#define assert( condition ) if( (condition) ) _exit(0)
+
+#endif /* _BEDBUG_H */
+
+
+/*
+ * Copyright (c) 2001 William L. Pitts
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are freely
+ * permitted provided that the above copyright notice and this
+ * paragraph and the following disclaimer are duplicated in all
+ * such forms.
+ *
+ * This software is provided "AS IS" and without any express or
+ * implied warranties, including, without limitation, the implied
+ * warranties of merchantability and fitness for a particular
+ * purpose.
+ */
diff --git a/include/bedbug/ppc.h b/include/bedbug/ppc.h
new file mode 100644
index 0000000000..9cc8f9fa38
--- /dev/null
+++ b/include/bedbug/ppc.h
@@ -0,0 +1,413 @@
+/* $Id$ */
+
+#ifndef _PPC_H
+#define _PPC_H
+
+/*======================================================================
+ *
+ *  OPERANDS
+ *
+ *======================================================================*/
+
+enum OP_FIELD {
+  O_AA = 1, O_BD, O_BI, O_BO, O_crbD, O_crbA, O_crbB, O_CRM, O_d, O_frC, O_frD,
+  O_frS, O_IMM, O_LI, O_LK, O_MB, O_ME, O_NB, O_OE, O_rA, O_rB, O_Rc, O_rD,
+  O_rS, O_SH, O_SIMM, O_SR, O_TO, O_UIMM, O_crfD, O_crfS, O_L, O_spr, O_tbr,
+  O_cr2 };
+
+struct operand {
+  enum OP_FIELD	field;		/* The operand identifier from the
+				   enum above */
+
+  char *	name;		/* Symbolic name of this operand */
+
+  unsigned int	bits;		/* The number of bits used by this
+				   operand */
+
+  unsigned int	shift;		/* How far to the right the operand
+				   should be shifted so that it is
+				   aligned at the beginning of the
+				   word */
+
+  unsigned int	hint;		/* A bitwise-inclusive-OR of the
+				   values shown below.  These are used
+				   tell the disassembler how to print
+				   this operand */
+};
+
+/* Values for operand hint */
+#define OH_SILENT	0x01	/* dont print this operand */
+#define OH_ADDR		0x02	/* this operand is an address */
+#define OH_REG		0x04	/* this operand is a register */
+#define OH_SPR		0x08	/* this operand is an SPR */
+#define OH_TBR		0x10	/* this operand is a TBR */
+#define OH_OFFSET	0x20	/* this operand is an offset */
+#define OH_LITERAL      0x40    /* a literal string */
+
+
+/*======================================================================
+ *
+ *  OPCODES
+ *
+ *======================================================================*/
+
+/* From the MPCxxx instruction set documentation, all instructions are
+ * 32 bits long and word aligned.  Bits 0-5 always specify the primary
+ * opcode.  Many instructions also have an extended opcode.
+ */
+
+#define GET_OPCD(i) (((unsigned long)(i) >> 26) & 0x3f)
+#define MAKE_OPCODE(i) ((((unsigned long)(i)) & 0x3f) << 26)
+
+/* The MPC860 User's Manual, Appendix D.4 contains the definitions of the
+ * instruction forms
+ */
+
+
+/*-------------------------------------------------
+ *              I-Form Instructions:
+ * bX
+ *-------------------------------------------------
+ * OPCD |           LI                       |AA|LK
+ *-------------------------------------------------*/
+
+#define I_OPCODE(i,aa,lk) (MAKE_OPCODE(i) | (((aa) & 0x1) << 1) | ((lk) & 0x1))
+#define I_MASK I_OPCODE(0x3f,0x1,0x1)
+
+
+/*-------------------------------------------------
+ *              B-Form Instructions:
+ * bcX
+ *-------------------------------------------------
+ * OPCD |    BO   |  BI  |   BD              |AA|LK
+ *-------------------------------------------------*/
+
+#define B_OPCODE(i,aa,lk) (MAKE_OPCODE(i) | (((aa) & 0x1) << 1) | ((lk) & 0x1))
+#define B_MASK B_OPCODE(0x3f,0x1,0x1)
+
+
+/*-------------------------------------------------
+ *             SC-Form Instructions:
+ * sc
+ *-------------------------------------------------
+ * OPCD | 00000 | 00000 | 00000000000000       |1|0
+ *-------------------------------------------------*/
+
+#define SC_OPCODE(i) (MAKE_OPCODE(i) | 0x2)
+#define SC_MASK SC_OPCODE(0x3f)
+
+
+/*-------------------------------------------------
+ *             D-Form Instructions:
+ * addi addic addic. addis andi. andis. cmpi cmpli
+ * lbz lbzu lha lhau lhz lhzu lmw lwz lwzu mulli
+ * ori oris stb stbu sth sthu stmw stw stwu subfic
+ * twi xori xoris
+ *-------------------------------------------------
+ * OPCD |   D    |   A   |            d
+ * OPCD |   D    |   A   |           SIMM
+ * OPCD |   S    |   A   |            d
+ * OPCD |   S    |   A   |           UIMM
+ * OPCD |crfD|0|L|   A   |           SIMM
+ * OPCD |crfD|0|L|   A   |           UIMM
+ * OPCD |   TO   |   A   |           SIMM
+ *-------------------------------------------------*/
+
+#define D_OPCODE(i) MAKE_OPCODE(i)
+#define D_MASK MAKE_OPCODE(0x3f)
+
+
+/*-------------------------------------------------
+ *            DS-Form Instructions:
+ * (none supported by MPC860)
+ *-------------------------------------------------
+ * OPCD |   D    |   A   |          ds          |XO
+ * OPCD |   S    |   A   |          ds          |XO
+ *-------------------------------------------------*/
+
+#define DS_OPCODE(i,xo) (MAKE_OPCODE(i) | ((xo) & 0x3))
+#define DS_MASK DS_OPCODE(0x3f,0x1)
+
+
+/*---------------------------------------------------
+ *            X-Form Instructions:
+ * andX andcX cmp cmpl cntlzwX dcbf dcbi dcbst dcbt
+ * dcbtst dcbz eciwx ecowx eieio eqvX extsbX extshX
+ * icbi lbzux lbxz lhaux lhax lhbrx lhzux lhxz lswi
+ * lswx lwarx lwbrx lwzux lwxz mcrfs mcrxr mfcr
+ * mfmsr mfsr mfsrin mtmsr mtsr mtsrin nandX norX
+ * orX orcX slwX srawX srawiX srwX stbux stbx
+ * sthbrx sthuxsthx stswi stswx stwbrx stwcx. stwux
+ * stwx sync tlbie tlbld tlbli tlbsync tw xorX
+ *---------------------------------------------------
+ * OPCD |   D    |    A   |    B   |      XO      |0
+ * OPCD |   D    |    A   |   NB   |      XO      |0
+ * OPCD |   D    |  00000 |    B   |      XO      |0
+ * OPCD |   D    |  00000 |  00000 |      XO      |0
+ * OPCD |   D    |0|  SR  |  00000 |      XO      |0
+ * OPCD |   S    |    A   |    B   |      XO      |Rc
+ * OPCD |   S    |    A   |    B   |      XO      |1
+ * OPCD |   S    |    A   |    B   |      XO      |0
+ * OPCD |   S    |    A   |   NB   |      XO      |0
+ * OPCD |   S    |    A   |  00000 |      XO      |Rc
+ * OPCD |   S    |  00000 |    B   |      XO      |0
+ * OPCD |   S    |  00000 |  00000 |      XO      |0
+ * OPCD |   S    |0|  SR  |  00000 |      XO      |0
+ * OPCD |   S    |    A   |   SH   |      XO      |Rc
+ * OPCD |crfD|0|L|    A   |   SH   |      XO      |0
+ * OPCD |crfD |00|    A   |    B   |      XO      |0
+ * OPCD |crfD |00|crfS |00|  00000 |      XO      |0
+ * OPCD |crfD |00|  00000 |  00000 |      XO      |0
+ * OPCD |crfD |00|  00000 | IMM  |0|      XO      |Rc
+ * OPCD |   TO   |    A   |    B   |      XO      |0
+ * OPCD |   D    |  00000 |    B   |      XO      |Rc
+ * OPCD |   D    |  00000 |  00000 |      XO      |Rc
+ * OPCD |  crbD  |  00000 |  00000 |      XO      |Rc
+ * OPCD |  00000 |    A   |    B   |      XO      |0
+ * OPCD |  00000 |  00000 |    B   |      XO      |0
+ * OPCD |  00000 |  00000 |  00000 |      XO      |0
+ *---------------------------------------------------*/
+
+#define X_OPCODE(i,xo,rc) (MAKE_OPCODE(i) | (((xo) & 0x3ff) << 1) | \
+			   ((rc) & 0x1))
+#define X_MASK X_OPCODE(0x3f,0x3ff,0x1)
+
+
+/*---------------------------------------------------
+ *            XL-Form Instructions:
+ * bcctrX bclrX crand crandc creqv crnand crnor cror
+ * croc crxorisync mcrf rfi
+ *---------------------------------------------------
+ * OPCD |   BO   |  BI    |  00000 |      XO      |LK
+ * OPCD |  crbD  | crbA   |  crbB  |      XO      |0
+ * OPCD |crfD |00|crfS |00|  00000 |      XO      |0
+ * OPCD |  00000 |  00000 |  00000 |      XO      |0
+ *---------------------------------------------------*/
+
+#define XL_OPCODE(i,xo,lk) (MAKE_OPCODE(i) | (((xo) & 0x3ff) << 1) | \
+			    ((lk) & 0x1))
+#define XL_MASK XL_OPCODE(0x3f,0x3ff,0x1)
+
+
+/*---------------------------------------------------
+ *            XFX-Form Instructions:
+ * mfspr mftb mtcrf mtspr
+ *---------------------------------------------------
+ * OPCD |   D    |      spr        |      XO       |0
+ * OPCD |   D    |0|    CRM      |0|      XO       |0
+ * OPCD |   S    |      spr        |      XO       |0
+ * OPCD |   D    |      tbr        |      XO       |0
+ *---------------------------------------------------*/
+
+#define XFX_OPCODE(i,xo,rc) (MAKE_OPCODE(i) | (((xo) & 0x3ff) << 1) | \
+			     ((rc) & 0x1))
+#define XFX_MASK XFX_OPCODE(0x3f,0x3ff,0x1)
+
+
+/*---------------------------------------------------
+ *            XFL-Form Instructions:
+ * (none supported by MPC860)
+ *---------------------------------------------------
+ * OPCD |0|      FM     |0|   B    |      XO       |0
+ *---------------------------------------------------*/
+
+#define XFL_OPCODE(i,xo,rc) (MAKE_OPCODE(i) | (((xo) & 0x3ff) << 1) | \
+			     ((rc) & 0x1))
+#define XFL_MASK XFL_OPCODE(0x3f,0x3ff,0x1)
+
+
+/*---------------------------------------------------
+ *            XS-Form Instructions:
+ * (none supported by MPC860)
+ *---------------------------------------------------
+ * OPCD |    S   |   A    |   sh   |      XO   |sh|LK
+ *---------------------------------------------------*/
+
+#define XS_OPCODE(i,xo,rc) (MAKE_OPCODE(i) | (((xo) & 0x1ff) << 2) | \
+			     ((rc) & 0x1))
+#define XS_MASK XS_OPCODE(0x3f,0x1ff,0x1)
+
+
+/*---------------------------------------------------
+ *            XO-Form Instructions:
+ * addX addcXaddeX addmeX addzeX divwX divwuX mulhwX
+ * mulhwuX mullwX negX subfX subfcX subfeX subfmeX
+ * subfzeX
+ *---------------------------------------------------
+ * OPCD |    D   |   A    |    B   |OE|     XO    |Rc
+ * OPCD |    D   |   A    |    B   |0 |     XO    |Rc
+ * OPCD |    D   |   A    |  00000 |OE|     XO    |Rc
+ *---------------------------------------------------*/
+
+#define XO_OPCODE(i,xo,oe,rc) (MAKE_OPCODE(i) | (((oe) & 0x1) << 10) | \
+			       (((xo) & 0x1ff) << 1) | ((rc) & 0x1))
+#define XO_MASK XO_OPCODE(0x3f,0x1ff,0x1,0x1)
+
+
+/*---------------------------------------------------
+ *            A-Form Instructions:
+ * (none supported by MPC860)
+ *---------------------------------------------------
+ * OPCD |    D   |   A    |    B   |00000|  XO    |Rc
+ * OPCD |    D   |   A    |    B   |  C  |  XO    |Rc
+ * OPCD |    D   |   A    |  00000 |  C  |  XO    |Rc
+ * OPCD |    D   |  00000 |    B   |00000|  XO    |Rc
+ *---------------------------------------------------*/
+
+#define A_OPCODE(i,xo,rc) (MAKE_OPCODE(i) | (((xo) & 0x1f) << 1) | \
+			   ((rc) & 0x1))
+#define A_MASK A_OPCODE(0x3f,0x1f,0x1)
+
+
+/*---------------------------------------------------
+ *            M-Form Instructions:
+ * rlwimiX rlwinmX rlwnmX
+ *---------------------------------------------------
+ * OPCD |    S   |   A    |    SH   |  MB |  ME   |Rc
+ * OPCD |    S   |   A    |     B   |  MB |  ME   |Rc
+ *---------------------------------------------------*/
+
+#define M_OPCODE(i,rc) (MAKE_OPCODE(i) | ((rc) & 0x1))
+#define M_MASK M_OPCODE(0x3f,0x1)
+
+
+/*---------------------------------------------------
+ *            MD-Form Instructions:
+ * (none supported by MPC860)
+ *---------------------------------------------------
+ * OPCD |    S   |   A    |    sh   |  mb | XO |sh|Rc
+ * OPCD |    S   |   A    |    sh   |  me | XO |sh|Rc
+ *---------------------------------------------------*/
+
+#define MD_OPCODE(i,xo,rc) (MAKE_OPCODE(i) | (((xo) & 0x7) << 2) | \
+			   ((rc) & 0x1))
+#define MD_MASK MD_OPCODE(0x3f,0x7,0x1)
+
+
+/*---------------------------------------------------
+ *            MDS-Form Instructions:
+ * (none supported by MPC860)
+ *---------------------------------------------------
+ * OPCD |    S   |   A    |    B    |  mb | XO    |Rc
+ * OPCD |    S   |   A    |    B    |  me | XO    |Rc
+ *---------------------------------------------------*/
+
+#define MDS_OPCODE(i,xo,rc) (MAKE_OPCODE(i) | (((xo) & 0xf) << 1) | \
+			   ((rc) & 0x1))
+#define MDS_MASK MDS_OPCODE(0x3f,0xf,0x1)
+
+#ifndef FALSE
+#define FALSE 0
+#define TRUE (!FALSE)
+#endif
+
+#define INSTRUCTION( memaddr ) ntohl(*(unsigned long *)(memaddr))
+
+#define MAX_OPERANDS  8
+
+struct ppc_ctx;
+
+struct opcode {
+  unsigned long	opcode;		/* The complete opcode as produced by
+				   one of the XXX_OPCODE macros above */
+
+  unsigned long	mask;		/* The mask to use on an instruction
+				   before comparing with the opcode
+				   field to see if it matches */
+
+  enum OP_FIELD	fields[MAX_OPERANDS];
+				/* An array defining the operands for
+				   this opcode.  The values of the
+				   array are the operand identifiers */
+
+  int (*hfunc)(struct ppc_ctx *);
+  				/* Address of a function to handle the given
+				   mnemonic */
+
+  char *	name;		/* The symbolic name of this opcode */
+
+  unsigned int	hint;		/* A bitwise-inclusive-OR of the
+				   values shown below.  These are used
+				   tell the disassembler how to print
+				   some operands for this opcode */
+};
+
+/* values for opcode hints */
+#define H_RELATIVE	0x1	/* The address operand is relative */
+#define H_IMM_HIGH	0x2	/* [U|S]IMM field shifted high */
+#define H_RA0_IS_0	0x4	/* If rA = 0 then treat as literal 0 */
+
+struct ppc_ctx {
+  struct opcode *	op;
+  unsigned long		instr;
+  unsigned int		flags;
+  int			datalen;
+  char			data[ 256 ];
+  char			radix_fmt[ 8 ];
+  unsigned char *	virtual;
+};
+
+
+/*======================================================================
+ *
+ *  FUNCTIONS
+ *
+ *======================================================================*/
+
+/* Values for flags as passed to various ppc routines */
+#define F_RADOCTAL	0x1	/* output radix = unsigned octal */
+#define F_RADUDECIMAL	0x2	/* output radix = unsigned decimal */
+#define F_RADSDECIMAL	0x4	/* output radix = signed decimal */
+#define F_RADHEX	0x8	/* output radix = unsigned hex */
+#define F_SIMPLE	0x10	/* use simplified mnemonics */
+#define F_SYMBOL	0x20	/* use symbol lookups for addresses */
+#define F_INSTR		0x40	/* output the raw instruction */
+#define F_LOCALMEM	0x80	/* retrieve opcodes from local memory
+				   rather than from the HMI */
+#define F_LINENO	0x100	/* show line number info if available */
+#define F_VALIDONLY	0x200	/* cache: valid entries only */
+
+/* Values for assembler error codes */
+#define E_ASM_BAD_OPCODE	1
+#define E_ASM_NUM_OPERANDS	2
+#define E_ASM_BAD_REGISTER	3
+#define E_ASM_BAD_SPR		4
+#define E_ASM_BAD_TBR		5
+
+extern int disppc __P((unsigned char *,unsigned char *,int,
+		       int (*)(const char *), unsigned long));
+extern int print_source_line __P((char *,char *,int,
+				  int (*pfunc)(const char *)));
+extern int find_next_address __P((unsigned char *,int,struct pt_regs *));
+extern int handle_bc __P((struct ppc_ctx *));
+extern unsigned long asmppc __P((unsigned long,char*,int*));
+extern char *asm_error_str __P((int));
+
+/*======================================================================
+ *
+ *  GLOBAL VARIABLES
+ *
+ *======================================================================*/
+
+extern struct operand operands[];
+extern const unsigned int n_operands;
+extern struct opcode opcodes[];
+extern const unsigned int n_opcodes;
+
+#endif /* _PPC_H */
+
+
+/*
+ * Copyright (c) 2000 William L. Pitts and W. Gerald Hicks
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are freely
+ * permitted provided that the above copyright notice and this
+ * paragraph and the following disclaimer are duplicated in all
+ * such forms.
+ *
+ * This software is provided "AS IS" and without any express or
+ * implied warranties, including, without limitation, the implied
+ * warranties of merchantability and fitness for a particular
+ * purpose.
+ */
diff --git a/include/bedbug/regs.h b/include/bedbug/regs.h
new file mode 100644
index 0000000000..938e435c55
--- /dev/null
+++ b/include/bedbug/regs.h
@@ -0,0 +1,403 @@
+/* $Id$ */
+
+#ifndef _REGS_H
+#define _REGS_H
+
+/* Special Purpose Registers */
+
+#define SPR_CR		-1
+#define SPR_MSR		-2
+
+#define SPR_XER		1
+#define SPR_LR		8
+#define SPR_CTR		9
+#define SPR_DSISR	18
+#define SPR_DAR		19
+#define SPR_DEC		22
+#define SPR_SRR0	26
+#define SPR_SRR1	27
+#define SPR_EIE		80
+#define SPR_EID		81
+#define SPR_CMPA	144
+#define SPR_CMPB	145
+#define SPR_CMPC	146
+#define SPR_CMPD	147
+#define SPR_ICR		148
+#define SPR_DER		149
+#define SPR_COUNTA	150
+#define SPR_COUNTB	151
+#define SPR_CMPE	152
+#define SPR_CMPF	153
+#define SPR_CMPG	154
+#define SPR_CMPH	155
+#define SPR_LCTRL1	156
+#define SPR_LCTRL2	157
+#define SPR_ICTRL	158
+#define SPR_BAR		159
+#define SPR_USPRG0      256
+#define SPR_SPRG4_RO    260
+#define SPR_SPRG5_RO    261
+#define SPR_SPRG6_RO    262
+#define SPR_SPRG7_RO    263
+#define SPR_SPRG0	272
+#define SPR_SPRG1	273
+#define SPR_SPRG2	274
+#define SPR_SPRG3	275
+#define SPR_SPRG4       276
+#define SPR_SPRG5       277
+#define SPR_SPRG6       278
+#define SPR_SPRG7       279
+#define SPR_EAR         282	/* MPC603e core */
+#define SPR_TBL         284
+#define SPR_TBU         285
+#define SPR_PVR		287
+#define SPR_IC_CST	560
+#define SPR_IC_ADR	561
+#define SPR_IC_DAT	562
+#define SPR_DC_CST	568
+#define SPR_DC_ADR	569
+#define SPR_DC_DAT	570
+#define SPR_DPDR	630
+#define SPR_IMMR	638
+#define SPR_MI_CTR	784
+#define SPR_MI_AP	786
+#define SPR_MI_EPN	787
+#define SPR_MI_TWC	789
+#define SPR_MI_RPN	790
+#define SPR_MD_CTR	792
+#define SPR_M_CASID	793
+#define SPR_MD_AP	794
+#define SPR_MD_EPN	795
+#define SPR_M_TWB	796
+#define SPR_MD_TWC	797
+#define SPR_MD_RPN	798
+#define SPR_M_TW	799
+#define SPR_MI_DBCAM	816
+#define SPR_MI_DBRAM0	817
+#define SPR_MI_DBRAM1	818
+#define SPR_MD_DBCAM	824
+#define SPR_MD_DBRAM0	825
+#define SPR_MD_DBRAM1	826
+#define SPR_ZPR         944
+#define SPR_PID         945
+#define SPR_CCR0        947
+#define SPR_IAC3        948
+#define SPR_IAC4        949
+#define SPR_DVC1        950
+#define SPR_DVC2        951
+#define SPR_SGR         953
+#define SPR_DCWR        954
+#define SPR_SLER        955
+#define SPR_SU0R        956
+#define SPR_DBCR1       957
+#define SPR_ICDBDR      979
+#define SPR_ESR         980
+#define SPR_DEAR        981
+#define SPR_EVPR        982
+#define SPR_TSR         984
+#define SPR_TCR         986
+#define SPR_PIT         987
+#define SPR_SRR2        990
+#define SPR_SRR3        991
+#define SPR_DBSR        1008
+#define SPR_DBCR0       1010
+#define SPR_IABR        1010	/* MPC603e core */
+#define SPR_IAC1        1012
+#define SPR_IAC2        1013
+#define SPR_DAC1        1014
+#define SPR_DAC2        1015
+#define SPR_DCCR        1018
+#define SPR_ICCR        1019
+
+/* Bits for the DBCR0 register */
+#define DBCR0_EDM	0x80000000
+#define DBCR0_IDM	0x40000000
+#define DBCR0_RST	0x30000000
+#define DBCR0_IC	0x08000000
+#define DBCR0_BT	0x04000000
+#define DBCR0_EDE	0x02000000
+#define DBCR0_TDE	0x01000000
+#define DBCR0_IA1	0x00800000
+#define DBCR0_IA2	0x00400000
+#define DBCR0_IA12	0x00200000
+#define DBCR0_IA12X	0x00100000
+#define DBCR0_IA3	0x00080000
+#define DBCR0_IA4	0x00040000
+#define DBCR0_IA34	0x00020000
+#define DBCR0_IA34X	0x00010000
+#define DBCR0_IA12T	0x00008000
+#define DBCR0_IA34T	0x00004000
+#define DBCR0_FT	0x00000001
+
+/* Bits for the DBCR1 register */
+#define DBCR1_D1R	0x80000000
+#define DBCR1_D2R	0x40000000
+#define DBCR1_D1W	0x20000000
+#define DBCR1_D2W	0x10000000
+#define DBCR1_D1S	0x0C000000
+#define DBCR1_D2S	0x03000000
+#define DBCR1_DA12	0x00800000
+#define DBCR1_DA12X	0x00400000
+#define DBCR1_DV1M	0x000C0000
+#define DBCR1_DV2M	0x00030000
+#define DBCR1_DV1BE	0x0000F000
+#define DBCR1_DV2BE	0x00000F00
+
+/* Bits for the DBSR register */
+#define DBSR_IC		0x80000000
+#define DBSR_BT		0x40000000
+#define DBSR_EDE	0x20000000
+#define DBSR_TIE	0x10000000
+#define DBSR_UDE	0x08000000
+#define DBSR_IA1	0x04000000
+#define DBSR_IA2	0x02000000
+#define DBSR_DR1	0x01000000
+#define DBSR_DW1	0x00800000
+#define DBSR_DR2	0x00400000
+#define DBSR_DW2	0x00200000
+#define DBSR_IDE	0x00100000
+#define DBSR_IA3	0x00080000
+#define DBSR_IA4	0x00040000
+#define DBSR_MRR	0x00000300
+
+struct spr_info {
+  int  spr_val;
+  char spr_name[ 10 ];
+};
+
+extern struct spr_info spr_map[];
+extern const unsigned int n_sprs;
+
+
+#define SET_REGISTER( str, val ) \
+({ unsigned long __value = (val); \
+  asm volatile( str : : "r" (__value)); \
+  __value; })
+
+#define	GET_REGISTER( str ) \
+({ unsigned long __value; \
+  asm volatile( str : "=r" (__value) : ); \
+  __value; })
+
+#define	 GET_CR()	     GET_REGISTER( "mfcr %0" )
+#define	 SET_CR(val)	     SET_REGISTER( "mtcr %0", val )
+#define	 GET_MSR()	     GET_REGISTER( "mfmsr %0" )
+#define	 SET_MSR(val)	     SET_REGISTER( "mtmsr %0", val )
+#define	 GET_XER()	     GET_REGISTER( "mfspr %0,1" )
+#define	 SET_XER(val)	     SET_REGISTER( "mtspr 1,%0", val )
+#define	 GET_LR()	     GET_REGISTER( "mfspr %0,8" )
+#define	 SET_LR(val)	     SET_REGISTER( "mtspr 8,%0", val )
+#define	 GET_CTR()	     GET_REGISTER( "mfspr %0,9" )
+#define	 SET_CTR(val)	     SET_REGISTER( "mtspr 9,%0", val )
+#define	 GET_DSISR()	     GET_REGISTER( "mfspr %0,18" )
+#define	 SET_DSISR(val)	     SET_REGISTER( "mtspr 18,%0", val )
+#define	 GET_DAR()	     GET_REGISTER( "mfspr %0,19" )
+#define	 SET_DAR(val)	     SET_REGISTER( "mtspr 19,%0", val )
+#define	 GET_DEC()	     GET_REGISTER( "mfspr %0,22" )
+#define	 SET_DEC(val)	     SET_REGISTER( "mtspr 22,%0", val )
+#define	 GET_SRR0()	     GET_REGISTER( "mfspr %0,26" )
+#define	 SET_SRR0(val)       SET_REGISTER( "mtspr 26,%0", val )
+#define	 GET_SRR1()	     GET_REGISTER( "mfspr %0,27" )
+#define	 SET_SRR1(val)	     SET_REGISTER( "mtspr 27,%0", val )
+#define	 GET_EIE()	     GET_REGISTER( "mfspr %0,80" )
+#define	 SET_EIE(val)	     SET_REGISTER( "mtspr 80,%0", val )
+#define	 GET_EID()	     GET_REGISTER( "mfspr %0,81" )
+#define	 SET_EID(val)	     SET_REGISTER( "mtspr 81,%0", val )
+#define	 GET_CMPA()	     GET_REGISTER( "mfspr %0,144" )
+#define	 SET_CMPA(val)	     SET_REGISTER( "mtspr 144,%0", val )
+#define	 GET_CMPB()	     GET_REGISTER( "mfspr %0,145" )
+#define	 SET_CMPB(val)	     SET_REGISTER( "mtspr 145,%0", val )
+#define	 GET_CMPC()	     GET_REGISTER( "mfspr %0,146" )
+#define	 SET_CMPC(val)	     SET_REGISTER( "mtspr 146,%0", val )
+#define	 GET_CMPD()	     GET_REGISTER( "mfspr %0,147" )
+#define	 SET_CMPD(val)	     SET_REGISTER( "mtspr 147,%0", val )
+#define	 GET_ICR()	     GET_REGISTER( "mfspr %0,148" )
+#define	 SET_ICR(val)	     SET_REGISTER( "mtspr 148,%0", val )
+#define	 GET_DER()	     GET_REGISTER( "mfspr %0,149" )
+#define	 SET_DER(val)	     SET_REGISTER( "mtspr 149,%0", val )
+#define	 GET_COUNTA()	     GET_REGISTER( "mfspr %0,150" )
+#define	 SET_COUNTA(val)     SET_REGISTER( "mtspr 150,%0", val )
+#define	 GET_COUNTB()	     GET_REGISTER( "mfspr %0,151" )
+#define	 SET_COUNTB(val)     SET_REGISTER( "mtspr 151,%0", val )
+#define	 GET_CMPE()	     GET_REGISTER( "mfspr %0,152" )
+#define	 SET_CMPE(val)	     SET_REGISTER( "mtspr 152,%0", val )
+#define	 GET_CMPF()	     GET_REGISTER( "mfspr %0,153" )
+#define	 SET_CMPF(val)	     SET_REGISTER( "mtspr 153,%0", val )
+#define	 GET_CMPG()	     GET_REGISTER( "mfspr %0,154" )
+#define	 SET_CMPG(val)	     SET_REGISTER( "mtspr 154,%0", val )
+#define	 GET_CMPH()	     GET_REGISTER( "mfspr %0,155" )
+#define	 SET_CMPH(val)	     SET_REGISTER( "mtspr 155,%0", val )
+#define  GET_LCTRL1()	     GET_REGISTER( "mfspr %0,156" )
+#define	 SET_LCTRL1(val)     SET_REGISTER( "mtspr 156,%0", val )
+#define  GET_LCTRL2()	     GET_REGISTER( "mfspr %0,157" )
+#define	 SET_LCTRL2(val)     SET_REGISTER( "mtspr 157,%0", val )
+#define  GET_ICTRL()	     GET_REGISTER( "mfspr %0,158" )
+#define	 SET_ICTRL(val)	     SET_REGISTER( "mtspr 158,%0", val )
+#define  GET_BAR()	     GET_REGISTER( "mfspr %0,159" )
+#define	 SET_BAR(val)	     SET_REGISTER( "mtspr 159,%0", val )
+#define  GET_USPRG0()	     GET_REGISTER( "mfspr %0,256" )
+#define	 SET_USPRG0(val)     SET_REGISTER( "mtspr 256,%0", val )
+#define  GET_SPRG4_RO()	     GET_REGISTER( "mfspr %0,260" )
+#define	 SET_SPRG4_RO(val)   SET_REGISTER( "mtspr 260,%0", val )
+#define  GET_SPRG5_RO()	     GET_REGISTER( "mfspr %0,261" )
+#define	 SET_SPRG5_RO(val)   SET_REGISTER( "mtspr 261,%0", val )
+#define  GET_SPRG6_RO()	     GET_REGISTER( "mfspr %0,262" )
+#define	 SET_SPRG6_RO(val)   SET_REGISTER( "mtspr 262,%0", val )
+#define  GET_SPRG7_RO()	     GET_REGISTER( "mfspr %0,263" )
+#define	 SET_SPRG7_RO(val)   SET_REGISTER( "mtspr 263,%0", val )
+#define  GET_SPRG0()	     GET_REGISTER( "mfspr %0,272" )
+#define	 SET_SPRG0(val)	     SET_REGISTER( "mtspr 272,%0", val )
+#define  GET_SPRG1()	     GET_REGISTER( "mfspr %0,273" )
+#define	 SET_SPRG1(val)	     SET_REGISTER( "mtspr 273,%0", val )
+#define  GET_SPRG2()	     GET_REGISTER( "mfspr %0,274" )
+#define	 SET_SPRG2(val)	     SET_REGISTER( "mtspr 274,%0", val )
+#define  GET_SPRG3()	     GET_REGISTER( "mfspr %0,275" )
+#define	 SET_SPRG3(val)	     SET_REGISTER( "mtspr 275,%0", val )
+#define  GET_SPRG4()	     GET_REGISTER( "mfspr %0,276" )
+#define	 SET_SPRG4(val)      SET_REGISTER( "mtspr 276,%0", val )
+#define  GET_SPRG5()	     GET_REGISTER( "mfspr %0,277" )
+#define	 SET_SPRG5(val)	     SET_REGISTER( "mtspr 277,%0", val )
+#define  GET_SPRG6()	     GET_REGISTER( "mfspr %0,278" )
+#define	 SET_SPRG6(val)	     SET_REGISTER( "mtspr 278,%0", val )
+#define  GET_SPRG7()	     GET_REGISTER( "mfspr %0,279" )
+#define	 SET_SPRG7(val)	     SET_REGISTER( "mtspr 279,%0", val )
+#define  GET_EAR()	     GET_REGISTER( "mfspr %0,282" )
+#define	 SET_EAR(val)	     SET_REGISTER( "mtspr 282,%0", val )
+#define  GET_TBL()	     GET_REGISTER( "mfspr %0,284" )
+#define	 SET_TBL(val)	     SET_REGISTER( "mtspr 284,%0", val )
+#define  GET_TBU()	     GET_REGISTER( "mfspr %0,285" )
+#define	 SET_TBU(val)	     SET_REGISTER( "mtspr 285,%0", val )
+#define  GET_PVR()	     GET_REGISTER( "mfspr %0,287" )
+#define	 SET_PVR(val)	     SET_REGISTER( "mtspr 287,%0", val )
+#define  GET_IC_CST()	     GET_REGISTER( "mfspr %0,560" )
+#define	 SET_IC_CST(val)     SET_REGISTER( "mtspr 560,%0", val )
+#define  GET_IC_ADR()	     GET_REGISTER( "mfspr %0,561" )
+#define	 SET_IC_ADR(val)     SET_REGISTER( "mtspr 561,%0", val )
+#define  GET_IC_DAT()	     GET_REGISTER( "mfspr %0,562" )
+#define	 SET_IC_DAT(val)     SET_REGISTER( "mtspr 562,%0", val )
+#define  GET_DC_CST()	     GET_REGISTER( "mfspr %0,568" )
+#define	 SET_DC_CST(val)     SET_REGISTER( "mtspr 568,%0", val )
+#define  GET_DC_ADR()	     GET_REGISTER( "mfspr %0,569" )
+#define	 SET_DC_ADR(val)     SET_REGISTER( "mtspr 569,%0", val )
+#define  GET_DC_DAT()	     GET_REGISTER( "mfspr %0,570" )
+#define	 SET_DC_DAT(val)     SET_REGISTER( "mtspr 570,%0", val )
+#define  GET_DPDR()	     GET_REGISTER( "mfspr %0,630" )
+#define	 SET_DPDR(val)	     SET_REGISTER( "mtspr 630,%0", val )
+#define  GET_IMMR()	     GET_REGISTER( "mfspr %0,638" )
+#define	 SET_IMMR(val)	     SET_REGISTER( "mtspr 638,%0", val )
+#define  GET_MI_CTR()	     GET_REGISTER( "mfspr %0,784" )
+#define	 SET_MI_CTR(val)     SET_REGISTER( "mtspr 784,%0", val )
+#define  GET_MI_AP()	     GET_REGISTER( "mfspr %0,786" )
+#define	 SET_MI_AP(val)	     SET_REGISTER( "mtspr 786,%0", val )
+#define  GET_MI_EPN()	     GET_REGISTER( "mfspr %0,787" )
+#define	 SET_MI_EPN(val)     SET_REGISTER( "mtspr 787,%0", val )
+#define  GET_MI_TWC()	     GET_REGISTER( "mfspr %0,789" )
+#define	 SET_MI_TWC(val)     SET_REGISTER( "mtspr 789,%0", val )
+#define  GET_MI_RPN()	     GET_REGISTER( "mfspr %0,790" )
+#define	 SET_MI_RPN(val)     SET_REGISTER( "mtspr 790,%0", val )
+#define  GET_MD_CTR()	     GET_REGISTER( "mfspr %0,792" )
+#define	 SET_MD_CTR(val)     SET_REGISTER( "mtspr 792,%0", val )
+#define  GET_M_CASID()	     GET_REGISTER( "mfspr %0,793" )
+#define	 SET_M_CASID(val)    SET_REGISTER( "mtspr 793,%0", val )
+#define  GET_MD_AP()	     GET_REGISTER( "mfspr %0,794" )
+#define	 SET_MD_AP(val)	     SET_REGISTER( "mtspr ,794%0", val )
+#define  GET_MD_EPN()	     GET_REGISTER( "mfspr %0,795" )
+#define	 SET_MD_EPN(val)     SET_REGISTER( "mtspr 795,%0", val )
+#define  GET_M_TWB()	     GET_REGISTER( "mfspr %0,796" )
+#define	 SET_M_TWB(val)	     SET_REGISTER( "mtspr 796,%0", val )
+#define  GET_MD_TWC()	     GET_REGISTER( "mfspr %0,797" )
+#define	 SET_MD_TWC(val)     SET_REGISTER( "mtspr 797,%0", val )
+#define  GET_MD_RPN()	     GET_REGISTER( "mfspr %0,798" )
+#define	 SET_MD_RPN(val)     SET_REGISTER( "mtspr 798,%0", val )
+#define  GET_M_TW()	     GET_REGISTER( "mfspr %0,799" )
+#define	 SET_M_TW(val)	     SET_REGISTER( "mtspr 799,%0", val )
+#define  GET_MI_DBCAM()      GET_REGISTER( "mfspr %0,816" )
+#define	 SET_MI_DBCAM(val)   SET_REGISTER( "mtspr 816,%0", val )
+#define  GET_MI_DBRAM0()     GET_REGISTER( "mfspr %0,817" )
+#define	 SET_MI_DBRAM0(val)  SET_REGISTER( "mtspr 817,%0", val )
+#define  GET_MI_DBRAM1()     GET_REGISTER( "mfspr %0,818" )
+#define	 SET_MI_DBRAM1(val)  SET_REGISTER( "mtspr 818,%0", val )
+#define  GET_MD_DBCAM()      GET_REGISTER( "mfspr %0,824" )
+#define	 SET_MD_DBCA(val)    SET_REGISTER( "mtspr 824,%0", val )
+#define  GET_MD_DBRAM0()     GET_REGISTER( "mfspr %0,825" )
+#define	 SET_MD_DBRAM0(val)  SET_REGISTER( "mtspr 825,%0", val )
+#define  GET_MD_DBRAM1()     GET_REGISTER( "mfspr %0,826" )
+#define	 SET_MD_DBRAM1(val)  SET_REGISTER( "mtspr 826,%0", val )
+#define  GET_ZPR()           GET_REGISTER( "mfspr %0,944" )
+#define	 SET_ZPR(val)        SET_REGISTER( "mtspr 944,%0", val )
+#define  GET_PID()	     GET_REGISTER( "mfspr %0,945" )
+#define	 SET_PID(val)	     SET_REGISTER( "mtspr 945,%0", val )
+#define  GET_CCR0()	     GET_REGISTER( "mfspr %0,947" )
+#define	 SET_CCR0(val)	     SET_REGISTER( "mtspr 947,%0", val )
+#define	 GET_IAC3()	     GET_REGISTER( "mfspr %0,948" )
+#define	 SET_IAC3(val)	     SET_REGISTER( "mtspr 948,%0", val )
+#define	 GET_IAC4()	     GET_REGISTER( "mfspr %0,949" )
+#define	 SET_IAC4(val)	     SET_REGISTER( "mtspr 949,%0", val )
+#define	 GET_DVC1()	     GET_REGISTER( "mfspr %0,950" )
+#define	 SET_DVC1(val)	     SET_REGISTER( "mtspr 950,%0", val )
+#define	 GET_DVC2()	     GET_REGISTER( "mfspr %0,951" )
+#define	 SET_DVC2(val)	     SET_REGISTER( "mtspr 951,%0", val )
+#define	 GET_SGR()	     GET_REGISTER( "mfspr %0,953" )
+#define	 SET_SGR(val)	     SET_REGISTER( "mtspr 953,%0", val )
+#define	 GET_DCWR()	     GET_REGISTER( "mfspr %0,954" )
+#define	 SET_DCWR(val)	     SET_REGISTER( "mtspr 954,%0", val )
+#define	 GET_SLER()	     GET_REGISTER( "mfspr %0,955" )
+#define	 SET_SLER(val)	     SET_REGISTER( "mtspr 955,%0", val )
+#define	 GET_SU0R()	     GET_REGISTER( "mfspr %0,956" )
+#define	 SET_SU0R(val)	     SET_REGISTER( "mtspr 956,%0", val )
+#define	 GET_DBCR1()	     GET_REGISTER( "mfspr %0,957" )
+#define	 SET_DBCR1(val)	     SET_REGISTER( "mtspr 957,%0", val )
+#define	 GET_ICDBDR()	     GET_REGISTER( "mfspr %0,979" )
+#define	 SET_ICDBDR(val)     SET_REGISTER( "mtspr 979,%0", val )
+#define	 GET_ESR()	     GET_REGISTER( "mfspr %0,980" )
+#define	 SET_ESR(val)	     SET_REGISTER( "mtspr 980,%0", val )
+#define	 GET_DEAR()	     GET_REGISTER( "mfspr %0,981" )
+#define	 SET_DEAR(val)	     SET_REGISTER( "mtspr 981,%0", val )
+#define	 GET_EVPR()	     GET_REGISTER( "mfspr %0,982" )
+#define	 SET_EVPR(val)	     SET_REGISTER( "mtspr 982,%0", val )
+#define	 GET_TSR()	     GET_REGISTER( "mfspr %0,984" )
+#define	 SET_TSR(val)	     SET_REGISTER( "mtspr 984,%0", val )
+#define	 GET_TCR()	     GET_REGISTER( "mfspr %0,986" )
+#define	 SET_TCR(val)	     SET_REGISTER( "mtspr 986,%0", val )
+#define	 GET_PIT()	     GET_REGISTER( "mfspr %0,987" )
+#define	 SET_PIT(val)	     SET_REGISTER( "mtspr 987,%0", val )
+#define	 GET_SRR2()	     GET_REGISTER( "mfspr %0,990" )
+#define	 SET_SRR2(val)	     SET_REGISTER( "mtspr 990,%0", val )
+#define	 GET_SRR3()	     GET_REGISTER( "mfspr %0,991" )
+#define	 SET_SRR3(val)	     SET_REGISTER( "mtspr 991,%0", val )
+#define	 GET_DBSR()	     GET_REGISTER( "mfspr %0,1008" )
+#define	 SET_DBSR(val)	     SET_REGISTER( "mtspr 1008,%0", val )
+#define	 GET_DBCR0()	     GET_REGISTER( "mfspr %0,1010" )
+#define	 SET_DBCR0(val)	     SET_REGISTER( "mtspr 1010,%0", val )
+#define	 GET_IABR()	     GET_REGISTER( "mfspr %0,1010" )
+#define	 SET_IABR(val)	     SET_REGISTER( "mtspr 1010,%0", val )
+#define	 GET_IAC1()	     GET_REGISTER( "mfspr %0,1012" )
+#define	 SET_IAC1(val)	     SET_REGISTER( "mtspr 1012,%0", val )
+#define	 GET_IAC2()	     GET_REGISTER( "mfspr %0,1013" )
+#define	 SET_IAC2(val)	     SET_REGISTER( "mtspr 1013,%0", val )
+#define	 GET_DAC1()	     GET_REGISTER( "mfspr %0,1014" )
+#define	 SET_DAC1(val)	     SET_REGISTER( "mtspr 1014,%0", val )
+#define	 GET_DAC2()	     GET_REGISTER( "mfspr %0,1015" )
+#define	 SET_DAC2(val)	     SET_REGISTER( "mtspr 1015,%0", val )
+#define	 GET_DCCR()	     GET_REGISTER( "mfspr %0,1018" )
+#define	 SET_DCCR(val)	     SET_REGISTER( "mtspr 1018,%0", val )
+#define	 GET_ICCR()	     GET_REGISTER( "mfspr %0,1019" )
+#define	 SET_ICCR(val)	     SET_REGISTER( "mtspr 1019,%0", val )
+
+#endif /* _REGS_H */
+
+
+/*
+ * Copyright (c) 2000 William L. Pitts and W. Gerald Hicks
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are freely
+ * permitted provided that the above copyright notice and this
+ * paragraph and the following disclaimer are duplicated in all
+ * such forms.
+ *
+ * This software is provided "AS IS" and without any express or
+ * implied warranties, including, without limitation, the implied
+ * warranties of merchantability and fitness for a particular
+ * purpose.
+ */