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Diffstat (limited to 'include/bedbug/ppc.h')
| -rw-r--r-- | include/bedbug/ppc.h | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/include/bedbug/ppc.h b/include/bedbug/ppc.h new file mode 100644 index 0000000..9cc8f9f --- /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. + */ |