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u-boot/include/bedbug/ppc.h

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Initial revision
2002-03-08 21:31:05 +00:00
/* $Id$ */
#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.
*/
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