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alpha-dis.c
1959 lines (1763 loc) · 80.4 KB
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alpha-dis.c
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/* alpha-dis.c -- Disassemble Alpha AXP instructions
Copyright 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
Contributed by Richard Henderson <rth@tamu.edu>,
patterned after the PPC opcode handling written by Ian Lance Taylor.
This file is part of GDB, GAS, and the GNU binutils.
GDB, GAS, and the GNU binutils are free software; you can redistribute
them and/or modify them under the terms of the GNU General Public
License as published by the Free Software Foundation; either version
2, or (at your option) any later version.
GDB, GAS, and the GNU binutils are distributed in the hope that they
will be useful, but WITHOUT ANY WARRANTY; without even the implied
warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this file; see the file COPYING. If not, see
<http://www.gnu.org/licenses/>. */
#include <stdio.h>
#include "dis-asm.h"
/* The opcode table is an array of struct alpha_opcode. */
struct alpha_opcode
{
/* The opcode name. */
const char *name;
/* The opcode itself. Those bits which will be filled in with
operands are zeroes. */
unsigned opcode;
/* The opcode mask. This is used by the disassembler. This is a
mask containing ones indicating those bits which must match the
opcode field, and zeroes indicating those bits which need not
match (and are presumably filled in by operands). */
unsigned mask;
/* One bit flags for the opcode. These are primarily used to
indicate specific processors and environments support the
instructions. The defined values are listed below. */
unsigned flags;
/* An array of operand codes. Each code is an index into the
operand table. They appear in the order which the operands must
appear in assembly code, and are terminated by a zero. */
unsigned char operands[4];
};
/* The table itself is sorted by major opcode number, and is otherwise
in the order in which the disassembler should consider
instructions. */
extern const struct alpha_opcode alpha_opcodes[];
extern const unsigned alpha_num_opcodes;
/* Values defined for the flags field of a struct alpha_opcode. */
/* CPU Availability */
#define AXP_OPCODE_BASE 0x0001 /* Base architecture -- all cpus. */
#define AXP_OPCODE_EV4 0x0002 /* EV4 specific PALcode insns. */
#define AXP_OPCODE_EV5 0x0004 /* EV5 specific PALcode insns. */
#define AXP_OPCODE_EV6 0x0008 /* EV6 specific PALcode insns. */
#define AXP_OPCODE_BWX 0x0100 /* Byte/word extension (amask bit 0). */
#define AXP_OPCODE_CIX 0x0200 /* "Count" extension (amask bit 1). */
#define AXP_OPCODE_MAX 0x0400 /* Multimedia extension (amask bit 8). */
#define AXP_OPCODE_NOPAL (~(AXP_OPCODE_EV4|AXP_OPCODE_EV5|AXP_OPCODE_EV6))
/* A macro to extract the major opcode from an instruction. */
#define AXP_OP(i) (((i) >> 26) & 0x3F)
/* The total number of major opcodes. */
#define AXP_NOPS 0x40
/* The operands table is an array of struct alpha_operand. */
struct alpha_operand
{
/* The number of bits in the operand. */
unsigned int bits : 5;
/* How far the operand is left shifted in the instruction. */
unsigned int shift : 5;
/* The default relocation type for this operand. */
signed int default_reloc : 16;
/* One bit syntax flags. */
unsigned int flags : 16;
/* Insertion function. This is used by the assembler. To insert an
operand value into an instruction, check this field.
If it is NULL, execute
i |= (op & ((1 << o->bits) - 1)) << o->shift;
(i is the instruction which we are filling in, o is a pointer to
this structure, and op is the opcode value; this assumes twos
complement arithmetic).
If this field is not NULL, then simply call it with the
instruction and the operand value. It will return the new value
of the instruction. If the ERRMSG argument is not NULL, then if
the operand value is illegal, *ERRMSG will be set to a warning
string (the operand will be inserted in any case). If the
operand value is legal, *ERRMSG will be unchanged (most operands
can accept any value). */
unsigned (*insert) PARAMS ((unsigned instruction, int op,
const char **errmsg));
/* Extraction function. This is used by the disassembler. To
extract this operand type from an instruction, check this field.
If it is NULL, compute
op = ((i) >> o->shift) & ((1 << o->bits) - 1);
if ((o->flags & AXP_OPERAND_SIGNED) != 0
&& (op & (1 << (o->bits - 1))) != 0)
op -= 1 << o->bits;
(i is the instruction, o is a pointer to this structure, and op
is the result; this assumes twos complement arithmetic).
If this field is not NULL, then simply call it with the
instruction value. It will return the value of the operand. If
the INVALID argument is not NULL, *INVALID will be set to
non-zero if this operand type can not actually be extracted from
this operand (i.e., the instruction does not match). If the
operand is valid, *INVALID will not be changed. */
int (*extract) PARAMS ((unsigned instruction, int *invalid));
};
/* Elements in the table are retrieved by indexing with values from
the operands field of the alpha_opcodes table. */
extern const struct alpha_operand alpha_operands[];
extern const unsigned alpha_num_operands;
/* Values defined for the flags field of a struct alpha_operand. */
/* Mask for selecting the type for typecheck purposes */
#define AXP_OPERAND_TYPECHECK_MASK \
(AXP_OPERAND_PARENS | AXP_OPERAND_COMMA | AXP_OPERAND_IR | \
AXP_OPERAND_FPR | AXP_OPERAND_RELATIVE | AXP_OPERAND_SIGNED | \
AXP_OPERAND_UNSIGNED)
/* This operand does not actually exist in the assembler input. This
is used to support extended mnemonics, for which two operands fields
are identical. The assembler should call the insert function with
any op value. The disassembler should call the extract function,
ignore the return value, and check the value placed in the invalid
argument. */
#define AXP_OPERAND_FAKE 01
/* The operand should be wrapped in parentheses rather than separated
from the previous by a comma. This is used for the load and store
instructions which want their operands to look like "Ra,disp(Rb)". */
#define AXP_OPERAND_PARENS 02
/* Used in combination with PARENS, this supresses the supression of
the comma. This is used for "jmp Ra,(Rb),hint". */
#define AXP_OPERAND_COMMA 04
/* This operand names an integer register. */
#define AXP_OPERAND_IR 010
/* This operand names a floating point register. */
#define AXP_OPERAND_FPR 020
/* This operand is a relative branch displacement. The disassembler
prints these symbolically if possible. */
#define AXP_OPERAND_RELATIVE 040
/* This operand takes signed values. */
#define AXP_OPERAND_SIGNED 0100
/* This operand takes unsigned values. This exists primarily so that
a flags value of 0 can be treated as end-of-arguments. */
#define AXP_OPERAND_UNSIGNED 0200
/* Supress overflow detection on this field. This is used for hints. */
#define AXP_OPERAND_NOOVERFLOW 0400
/* Mask for optional argument default value. */
#define AXP_OPERAND_OPTIONAL_MASK 07000
/* This operand defaults to zero. This is used for jump hints. */
#define AXP_OPERAND_DEFAULT_ZERO 01000
/* This operand should default to the first (real) operand and is used
in conjunction with AXP_OPERAND_OPTIONAL. This allows
"and $0,3,$0" to be written as "and $0,3", etc. I don't like
it, but it's what DEC does. */
#define AXP_OPERAND_DEFAULT_FIRST 02000
/* Similarly, this operand should default to the second (real) operand.
This allows "negl $0" instead of "negl $0,$0". */
#define AXP_OPERAND_DEFAULT_SECOND 04000
/* Register common names */
#define AXP_REG_V0 0
#define AXP_REG_T0 1
#define AXP_REG_T1 2
#define AXP_REG_T2 3
#define AXP_REG_T3 4
#define AXP_REG_T4 5
#define AXP_REG_T5 6
#define AXP_REG_T6 7
#define AXP_REG_T7 8
#define AXP_REG_S0 9
#define AXP_REG_S1 10
#define AXP_REG_S2 11
#define AXP_REG_S3 12
#define AXP_REG_S4 13
#define AXP_REG_S5 14
#define AXP_REG_FP 15
#define AXP_REG_A0 16
#define AXP_REG_A1 17
#define AXP_REG_A2 18
#define AXP_REG_A3 19
#define AXP_REG_A4 20
#define AXP_REG_A5 21
#define AXP_REG_T8 22
#define AXP_REG_T9 23
#define AXP_REG_T10 24
#define AXP_REG_T11 25
#define AXP_REG_RA 26
#define AXP_REG_PV 27
#define AXP_REG_T12 27
#define AXP_REG_AT 28
#define AXP_REG_GP 29
#define AXP_REG_SP 30
#define AXP_REG_ZERO 31
#define bfd_mach_alpha_ev4 0x10
#define bfd_mach_alpha_ev5 0x20
#define bfd_mach_alpha_ev6 0x30
enum bfd_reloc_code_real {
BFD_RELOC_23_PCREL_S2,
BFD_RELOC_ALPHA_HINT
};
/* This file holds the Alpha AXP opcode table. The opcode table includes
almost all of the extended instruction mnemonics. This permits the
disassembler to use them, and simplifies the assembler logic, at the
cost of increasing the table size. The table is strictly constant
data, so the compiler should be able to put it in the text segment.
This file also holds the operand table. All knowledge about inserting
and extracting operands from instructions is kept in this file.
The information for the base instruction set was compiled from the
_Alpha Architecture Handbook_, Digital Order Number EC-QD2KB-TE,
version 2.
The information for the post-ev5 architecture extensions BWX, CIX and
MAX came from version 3 of this same document, which is also available
on-line at http://ftp.digital.com/pub/Digital/info/semiconductor
/literature/alphahb2.pdf
The information for the EV4 PALcode instructions was compiled from
_DECchip 21064 and DECchip 21064A Alpha AXP Microprocessors Hardware
Reference Manual_, Digital Order Number EC-Q9ZUA-TE, preliminary
revision dated June 1994.
The information for the EV5 PALcode instructions was compiled from
_Alpha 21164 Microprocessor Hardware Reference Manual_, Digital
Order Number EC-QAEQB-TE, preliminary revision dated April 1995. */
/* Local insertion and extraction functions */
static unsigned insert_rba PARAMS((unsigned, int, const char **));
static unsigned insert_rca PARAMS((unsigned, int, const char **));
static unsigned insert_za PARAMS((unsigned, int, const char **));
static unsigned insert_zb PARAMS((unsigned, int, const char **));
static unsigned insert_zc PARAMS((unsigned, int, const char **));
static unsigned insert_bdisp PARAMS((unsigned, int, const char **));
static unsigned insert_jhint PARAMS((unsigned, int, const char **));
static unsigned insert_ev6hwjhint PARAMS((unsigned, int, const char **));
static int extract_rba PARAMS((unsigned, int *));
static int extract_rca PARAMS((unsigned, int *));
static int extract_za PARAMS((unsigned, int *));
static int extract_zb PARAMS((unsigned, int *));
static int extract_zc PARAMS((unsigned, int *));
static int extract_bdisp PARAMS((unsigned, int *));
static int extract_jhint PARAMS((unsigned, int *));
static int extract_ev6hwjhint PARAMS((unsigned, int *));
/* The operands table */
const struct alpha_operand alpha_operands[] =
{
/* The fields are bits, shift, insert, extract, flags */
/* The zero index is used to indicate end-of-list */
#define UNUSED 0
{ 0, 0, 0, 0, 0, 0 },
/* The plain integer register fields */
#define RA (UNUSED + 1)
{ 5, 21, 0, AXP_OPERAND_IR, 0, 0 },
#define RB (RA + 1)
{ 5, 16, 0, AXP_OPERAND_IR, 0, 0 },
#define RC (RB + 1)
{ 5, 0, 0, AXP_OPERAND_IR, 0, 0 },
/* The plain fp register fields */
#define FA (RC + 1)
{ 5, 21, 0, AXP_OPERAND_FPR, 0, 0 },
#define FB (FA + 1)
{ 5, 16, 0, AXP_OPERAND_FPR, 0, 0 },
#define FC (FB + 1)
{ 5, 0, 0, AXP_OPERAND_FPR, 0, 0 },
/* The integer registers when they are ZERO */
#define ZA (FC + 1)
{ 5, 21, 0, AXP_OPERAND_FAKE, insert_za, extract_za },
#define ZB (ZA + 1)
{ 5, 16, 0, AXP_OPERAND_FAKE, insert_zb, extract_zb },
#define ZC (ZB + 1)
{ 5, 0, 0, AXP_OPERAND_FAKE, insert_zc, extract_zc },
/* The RB field when it needs parentheses */
#define PRB (ZC + 1)
{ 5, 16, 0, AXP_OPERAND_IR|AXP_OPERAND_PARENS, 0, 0 },
/* The RB field when it needs parentheses _and_ a preceding comma */
#define CPRB (PRB + 1)
{ 5, 16, 0,
AXP_OPERAND_IR|AXP_OPERAND_PARENS|AXP_OPERAND_COMMA, 0, 0 },
/* The RB field when it must be the same as the RA field */
#define RBA (CPRB + 1)
{ 5, 16, 0, AXP_OPERAND_FAKE, insert_rba, extract_rba },
/* The RC field when it must be the same as the RB field */
#define RCA (RBA + 1)
{ 5, 0, 0, AXP_OPERAND_FAKE, insert_rca, extract_rca },
/* The RC field when it can *default* to RA */
#define DRC1 (RCA + 1)
{ 5, 0, 0,
AXP_OPERAND_IR|AXP_OPERAND_DEFAULT_FIRST, 0, 0 },
/* The RC field when it can *default* to RB */
#define DRC2 (DRC1 + 1)
{ 5, 0, 0,
AXP_OPERAND_IR|AXP_OPERAND_DEFAULT_SECOND, 0, 0 },
/* The FC field when it can *default* to RA */
#define DFC1 (DRC2 + 1)
{ 5, 0, 0,
AXP_OPERAND_FPR|AXP_OPERAND_DEFAULT_FIRST, 0, 0 },
/* The FC field when it can *default* to RB */
#define DFC2 (DFC1 + 1)
{ 5, 0, 0,
AXP_OPERAND_FPR|AXP_OPERAND_DEFAULT_SECOND, 0, 0 },
/* The unsigned 8-bit literal of Operate format insns */
#define LIT (DFC2 + 1)
{ 8, 13, -LIT, AXP_OPERAND_UNSIGNED, 0, 0 },
/* The signed 16-bit displacement of Memory format insns. From here
we can't tell what relocation should be used, so don't use a default. */
#define MDISP (LIT + 1)
{ 16, 0, -MDISP, AXP_OPERAND_SIGNED, 0, 0 },
/* The signed "23-bit" aligned displacement of Branch format insns */
#define BDISP (MDISP + 1)
{ 21, 0, BFD_RELOC_23_PCREL_S2,
AXP_OPERAND_RELATIVE, insert_bdisp, extract_bdisp },
/* The 26-bit PALcode function */
#define PALFN (BDISP + 1)
{ 26, 0, -PALFN, AXP_OPERAND_UNSIGNED, 0, 0 },
/* The optional signed "16-bit" aligned displacement of the JMP/JSR hint */
#define JMPHINT (PALFN + 1)
{ 14, 0, BFD_RELOC_ALPHA_HINT,
AXP_OPERAND_RELATIVE|AXP_OPERAND_DEFAULT_ZERO|AXP_OPERAND_NOOVERFLOW,
insert_jhint, extract_jhint },
/* The optional hint to RET/JSR_COROUTINE */
#define RETHINT (JMPHINT + 1)
{ 14, 0, -RETHINT,
AXP_OPERAND_UNSIGNED|AXP_OPERAND_DEFAULT_ZERO, 0, 0 },
/* The 12-bit displacement for the ev[46] hw_{ld,st} (pal1b/pal1f) insns */
#define EV4HWDISP (RETHINT + 1)
#define EV6HWDISP (EV4HWDISP)
{ 12, 0, -EV4HWDISP, AXP_OPERAND_SIGNED, 0, 0 },
/* The 5-bit index for the ev4 hw_m[ft]pr (pal19/pal1d) insns */
#define EV4HWINDEX (EV4HWDISP + 1)
{ 5, 0, -EV4HWINDEX, AXP_OPERAND_UNSIGNED, 0, 0 },
/* The 8-bit index for the oddly unqualified hw_m[tf]pr insns
that occur in DEC PALcode. */
#define EV4EXTHWINDEX (EV4HWINDEX + 1)
{ 8, 0, -EV4EXTHWINDEX, AXP_OPERAND_UNSIGNED, 0, 0 },
/* The 10-bit displacement for the ev5 hw_{ld,st} (pal1b/pal1f) insns */
#define EV5HWDISP (EV4EXTHWINDEX + 1)
{ 10, 0, -EV5HWDISP, AXP_OPERAND_SIGNED, 0, 0 },
/* The 16-bit index for the ev5 hw_m[ft]pr (pal19/pal1d) insns */
#define EV5HWINDEX (EV5HWDISP + 1)
{ 16, 0, -EV5HWINDEX, AXP_OPERAND_UNSIGNED, 0, 0 },
/* The 16-bit combined index/scoreboard mask for the ev6
hw_m[ft]pr (pal19/pal1d) insns */
#define EV6HWINDEX (EV5HWINDEX + 1)
{ 16, 0, -EV6HWINDEX, AXP_OPERAND_UNSIGNED, 0, 0 },
/* The 13-bit branch hint for the ev6 hw_jmp/jsr (pal1e) insn */
#define EV6HWJMPHINT (EV6HWINDEX+ 1)
{ 8, 0, -EV6HWJMPHINT,
AXP_OPERAND_RELATIVE|AXP_OPERAND_DEFAULT_ZERO|AXP_OPERAND_NOOVERFLOW,
insert_ev6hwjhint, extract_ev6hwjhint }
};
const unsigned alpha_num_operands = sizeof(alpha_operands)/sizeof(*alpha_operands);
/* The RB field when it is the same as the RA field in the same insn.
This operand is marked fake. The insertion function just copies
the RA field into the RB field, and the extraction function just
checks that the fields are the same. */
/*ARGSUSED*/
static unsigned
insert_rba(insn, value, errmsg)
unsigned insn;
int value ATTRIBUTE_UNUSED;
const char **errmsg ATTRIBUTE_UNUSED;
{
return insn | (((insn >> 21) & 0x1f) << 16);
}
static int
extract_rba(insn, invalid)
unsigned insn;
int *invalid;
{
if (invalid != (int *) NULL
&& ((insn >> 21) & 0x1f) != ((insn >> 16) & 0x1f))
*invalid = 1;
return 0;
}
/* The same for the RC field */
/*ARGSUSED*/
static unsigned
insert_rca(insn, value, errmsg)
unsigned insn;
int value ATTRIBUTE_UNUSED;
const char **errmsg ATTRIBUTE_UNUSED;
{
return insn | ((insn >> 21) & 0x1f);
}
static int
extract_rca(insn, invalid)
unsigned insn;
int *invalid;
{
if (invalid != (int *) NULL
&& ((insn >> 21) & 0x1f) != (insn & 0x1f))
*invalid = 1;
return 0;
}
/* Fake arguments in which the registers must be set to ZERO */
/*ARGSUSED*/
static unsigned
insert_za(insn, value, errmsg)
unsigned insn;
int value ATTRIBUTE_UNUSED;
const char **errmsg ATTRIBUTE_UNUSED;
{
return insn | (31 << 21);
}
static int
extract_za(insn, invalid)
unsigned insn;
int *invalid;
{
if (invalid != (int *) NULL && ((insn >> 21) & 0x1f) != 31)
*invalid = 1;
return 0;
}
/*ARGSUSED*/
static unsigned
insert_zb(insn, value, errmsg)
unsigned insn;
int value ATTRIBUTE_UNUSED;
const char **errmsg ATTRIBUTE_UNUSED;
{
return insn | (31 << 16);
}
static int
extract_zb(insn, invalid)
unsigned insn;
int *invalid;
{
if (invalid != (int *) NULL && ((insn >> 16) & 0x1f) != 31)
*invalid = 1;
return 0;
}
/*ARGSUSED*/
static unsigned
insert_zc(insn, value, errmsg)
unsigned insn;
int value ATTRIBUTE_UNUSED;
const char **errmsg ATTRIBUTE_UNUSED;
{
return insn | 31;
}
static int
extract_zc(insn, invalid)
unsigned insn;
int *invalid;
{
if (invalid != (int *) NULL && (insn & 0x1f) != 31)
*invalid = 1;
return 0;
}
/* The displacement field of a Branch format insn. */
static unsigned
insert_bdisp(insn, value, errmsg)
unsigned insn;
int value;
const char **errmsg;
{
if (errmsg != (const char **)NULL && (value & 3))
*errmsg = _("branch operand unaligned");
return insn | ((value / 4) & 0x1FFFFF);
}
/*ARGSUSED*/
static int
extract_bdisp(insn, invalid)
unsigned insn;
int *invalid ATTRIBUTE_UNUSED;
{
return 4 * (((insn & 0x1FFFFF) ^ 0x100000) - 0x100000);
}
/* The hint field of a JMP/JSR insn. */
static unsigned
insert_jhint(insn, value, errmsg)
unsigned insn;
int value;
const char **errmsg;
{
if (errmsg != (const char **)NULL && (value & 3))
*errmsg = _("jump hint unaligned");
return insn | ((value / 4) & 0x3FFF);
}
/*ARGSUSED*/
static int
extract_jhint(insn, invalid)
unsigned insn;
int *invalid ATTRIBUTE_UNUSED;
{
return 4 * (((insn & 0x3FFF) ^ 0x2000) - 0x2000);
}
/* The hint field of an EV6 HW_JMP/JSR insn. */
static unsigned
insert_ev6hwjhint(insn, value, errmsg)
unsigned insn;
int value;
const char **errmsg;
{
if (errmsg != (const char **)NULL && (value & 3))
*errmsg = _("jump hint unaligned");
return insn | ((value / 4) & 0x1FFF);
}
/*ARGSUSED*/
static int
extract_ev6hwjhint(insn, invalid)
unsigned insn;
int *invalid ATTRIBUTE_UNUSED;
{
return 4 * (((insn & 0x1FFF) ^ 0x1000) - 0x1000);
}
/* Macros used to form opcodes */
/* The main opcode */
#define OP(x) (((x) & 0x3F) << 26)
#define OP_MASK 0xFC000000
/* Branch format instructions */
#define BRA_(oo) OP(oo)
#define BRA_MASK OP_MASK
#define BRA(oo) BRA_(oo), BRA_MASK
/* Floating point format instructions */
#define FP_(oo,fff) (OP(oo) | (((fff) & 0x7FF) << 5))
#define FP_MASK (OP_MASK | 0xFFE0)
#define FP(oo,fff) FP_(oo,fff), FP_MASK
/* Memory format instructions */
#define MEM_(oo) OP(oo)
#define MEM_MASK OP_MASK
#define MEM(oo) MEM_(oo), MEM_MASK
/* Memory/Func Code format instructions */
#define MFC_(oo,ffff) (OP(oo) | ((ffff) & 0xFFFF))
#define MFC_MASK (OP_MASK | 0xFFFF)
#define MFC(oo,ffff) MFC_(oo,ffff), MFC_MASK
/* Memory/Branch format instructions */
#define MBR_(oo,h) (OP(oo) | (((h) & 3) << 14))
#define MBR_MASK (OP_MASK | 0xC000)
#define MBR(oo,h) MBR_(oo,h), MBR_MASK
/* Operate format instructions. The OPRL variant specifies a
literal second argument. */
#define OPR_(oo,ff) (OP(oo) | (((ff) & 0x7F) << 5))
#define OPRL_(oo,ff) (OPR_((oo),(ff)) | 0x1000)
#define OPR_MASK (OP_MASK | 0x1FE0)
#define OPR(oo,ff) OPR_(oo,ff), OPR_MASK
#define OPRL(oo,ff) OPRL_(oo,ff), OPR_MASK
/* Generic PALcode format instructions */
#define PCD_(oo) OP(oo)
#define PCD_MASK OP_MASK
#define PCD(oo) PCD_(oo), PCD_MASK
/* Specific PALcode instructions */
#define SPCD_(oo,ffff) (OP(oo) | ((ffff) & 0x3FFFFFF))
#define SPCD_MASK 0xFFFFFFFF
#define SPCD(oo,ffff) SPCD_(oo,ffff), SPCD_MASK
/* Hardware memory (hw_{ld,st}) instructions */
#define EV4HWMEM_(oo,f) (OP(oo) | (((f) & 0xF) << 12))
#define EV4HWMEM_MASK (OP_MASK | 0xF000)
#define EV4HWMEM(oo,f) EV4HWMEM_(oo,f), EV4HWMEM_MASK
#define EV5HWMEM_(oo,f) (OP(oo) | (((f) & 0x3F) << 10))
#define EV5HWMEM_MASK (OP_MASK | 0xF800)
#define EV5HWMEM(oo,f) EV5HWMEM_(oo,f), EV5HWMEM_MASK
#define EV6HWMEM_(oo,f) (OP(oo) | (((f) & 0xF) << 12))
#define EV6HWMEM_MASK (OP_MASK | 0xF000)
#define EV6HWMEM(oo,f) EV6HWMEM_(oo,f), EV6HWMEM_MASK
#define EV6HWMBR_(oo,h) (OP(oo) | (((h) & 7) << 13))
#define EV6HWMBR_MASK (OP_MASK | 0xE000)
#define EV6HWMBR(oo,h) EV6HWMBR_(oo,h), EV6HWMBR_MASK
/* Abbreviations for instruction subsets. */
#define BASE AXP_OPCODE_BASE
#define EV4 AXP_OPCODE_EV4
#define EV5 AXP_OPCODE_EV5
#define EV6 AXP_OPCODE_EV6
#define BWX AXP_OPCODE_BWX
#define CIX AXP_OPCODE_CIX
#define MAX AXP_OPCODE_MAX
/* Common combinations of arguments */
#define ARG_NONE { 0 }
#define ARG_BRA { RA, BDISP }
#define ARG_FBRA { FA, BDISP }
#define ARG_FP { FA, FB, DFC1 }
#define ARG_FPZ1 { ZA, FB, DFC1 }
#define ARG_MEM { RA, MDISP, PRB }
#define ARG_FMEM { FA, MDISP, PRB }
#define ARG_OPR { RA, RB, DRC1 }
#define ARG_OPRL { RA, LIT, DRC1 }
#define ARG_OPRZ1 { ZA, RB, DRC1 }
#define ARG_OPRLZ1 { ZA, LIT, RC }
#define ARG_PCD { PALFN }
#define ARG_EV4HWMEM { RA, EV4HWDISP, PRB }
#define ARG_EV4HWMPR { RA, RBA, EV4HWINDEX }
#define ARG_EV5HWMEM { RA, EV5HWDISP, PRB }
#define ARG_EV6HWMEM { RA, EV6HWDISP, PRB }
/* The opcode table.
The format of the opcode table is:
NAME OPCODE MASK { OPERANDS }
NAME is the name of the instruction.
OPCODE is the instruction opcode.
MASK is the opcode mask; this is used to tell the disassembler
which bits in the actual opcode must match OPCODE.
OPERANDS is the list of operands.
The preceding macros merge the text of the OPCODE and MASK fields.
The disassembler reads the table in order and prints the first
instruction which matches, so this table is sorted to put more
specific instructions before more general instructions.
Otherwise, it is sorted by major opcode and minor function code.
There are three classes of not-really-instructions in this table:
ALIAS is another name for another instruction. Some of
these come from the Architecture Handbook, some
come from the original gas opcode tables. In all
cases, the functionality of the opcode is unchanged.
PSEUDO a stylized code form endorsed by Chapter A.4 of the
Architecture Handbook.
EXTRA a stylized code form found in the original gas tables.
And two annotations:
EV56 BUT opcodes that are officially introduced as of the ev56,
but with defined results on previous implementations.
EV56 UNA opcodes that were introduced as of the ev56 with
presumably undefined results on previous implementations
that were not assigned to a particular extension.
*/
const struct alpha_opcode alpha_opcodes[] = {
{ "halt", SPCD(0x00,0x0000), BASE, ARG_NONE },
{ "draina", SPCD(0x00,0x0002), BASE, ARG_NONE },
{ "bpt", SPCD(0x00,0x0080), BASE, ARG_NONE },
{ "bugchk", SPCD(0x00,0x0081), BASE, ARG_NONE },
{ "callsys", SPCD(0x00,0x0083), BASE, ARG_NONE },
{ "chmk", SPCD(0x00,0x0083), BASE, ARG_NONE },
{ "imb", SPCD(0x00,0x0086), BASE, ARG_NONE },
{ "rduniq", SPCD(0x00,0x009e), BASE, ARG_NONE },
{ "wruniq", SPCD(0x00,0x009f), BASE, ARG_NONE },
{ "gentrap", SPCD(0x00,0x00aa), BASE, ARG_NONE },
{ "call_pal", PCD(0x00), BASE, ARG_PCD },
{ "pal", PCD(0x00), BASE, ARG_PCD }, /* alias */
{ "lda", MEM(0x08), BASE, { RA, MDISP, ZB } }, /* pseudo */
{ "lda", MEM(0x08), BASE, ARG_MEM },
{ "ldah", MEM(0x09), BASE, { RA, MDISP, ZB } }, /* pseudo */
{ "ldah", MEM(0x09), BASE, ARG_MEM },
{ "ldbu", MEM(0x0A), BWX, ARG_MEM },
{ "unop", MEM_(0x0B) | (30 << 16),
MEM_MASK, BASE, { ZA } }, /* pseudo */
{ "ldq_u", MEM(0x0B), BASE, ARG_MEM },
{ "ldwu", MEM(0x0C), BWX, ARG_MEM },
{ "stw", MEM(0x0D), BWX, ARG_MEM },
{ "stb", MEM(0x0E), BWX, ARG_MEM },
{ "stq_u", MEM(0x0F), BASE, ARG_MEM },
{ "sextl", OPR(0x10,0x00), BASE, ARG_OPRZ1 }, /* pseudo */
{ "sextl", OPRL(0x10,0x00), BASE, ARG_OPRLZ1 }, /* pseudo */
{ "addl", OPR(0x10,0x00), BASE, ARG_OPR },
{ "addl", OPRL(0x10,0x00), BASE, ARG_OPRL },
{ "s4addl", OPR(0x10,0x02), BASE, ARG_OPR },
{ "s4addl", OPRL(0x10,0x02), BASE, ARG_OPRL },
{ "negl", OPR(0x10,0x09), BASE, ARG_OPRZ1 }, /* pseudo */
{ "negl", OPRL(0x10,0x09), BASE, ARG_OPRLZ1 }, /* pseudo */
{ "subl", OPR(0x10,0x09), BASE, ARG_OPR },
{ "subl", OPRL(0x10,0x09), BASE, ARG_OPRL },
{ "s4subl", OPR(0x10,0x0B), BASE, ARG_OPR },
{ "s4subl", OPRL(0x10,0x0B), BASE, ARG_OPRL },
{ "cmpbge", OPR(0x10,0x0F), BASE, ARG_OPR },
{ "cmpbge", OPRL(0x10,0x0F), BASE, ARG_OPRL },
{ "s8addl", OPR(0x10,0x12), BASE, ARG_OPR },
{ "s8addl", OPRL(0x10,0x12), BASE, ARG_OPRL },
{ "s8subl", OPR(0x10,0x1B), BASE, ARG_OPR },
{ "s8subl", OPRL(0x10,0x1B), BASE, ARG_OPRL },
{ "cmpult", OPR(0x10,0x1D), BASE, ARG_OPR },
{ "cmpult", OPRL(0x10,0x1D), BASE, ARG_OPRL },
{ "addq", OPR(0x10,0x20), BASE, ARG_OPR },
{ "addq", OPRL(0x10,0x20), BASE, ARG_OPRL },
{ "s4addq", OPR(0x10,0x22), BASE, ARG_OPR },
{ "s4addq", OPRL(0x10,0x22), BASE, ARG_OPRL },
{ "negq", OPR(0x10,0x29), BASE, ARG_OPRZ1 }, /* pseudo */
{ "negq", OPRL(0x10,0x29), BASE, ARG_OPRLZ1 }, /* pseudo */
{ "subq", OPR(0x10,0x29), BASE, ARG_OPR },
{ "subq", OPRL(0x10,0x29), BASE, ARG_OPRL },
{ "s4subq", OPR(0x10,0x2B), BASE, ARG_OPR },
{ "s4subq", OPRL(0x10,0x2B), BASE, ARG_OPRL },
{ "cmpeq", OPR(0x10,0x2D), BASE, ARG_OPR },
{ "cmpeq", OPRL(0x10,0x2D), BASE, ARG_OPRL },
{ "s8addq", OPR(0x10,0x32), BASE, ARG_OPR },
{ "s8addq", OPRL(0x10,0x32), BASE, ARG_OPRL },
{ "s8subq", OPR(0x10,0x3B), BASE, ARG_OPR },
{ "s8subq", OPRL(0x10,0x3B), BASE, ARG_OPRL },
{ "cmpule", OPR(0x10,0x3D), BASE, ARG_OPR },
{ "cmpule", OPRL(0x10,0x3D), BASE, ARG_OPRL },
{ "addl/v", OPR(0x10,0x40), BASE, ARG_OPR },
{ "addl/v", OPRL(0x10,0x40), BASE, ARG_OPRL },
{ "negl/v", OPR(0x10,0x49), BASE, ARG_OPRZ1 }, /* pseudo */
{ "negl/v", OPRL(0x10,0x49), BASE, ARG_OPRLZ1 }, /* pseudo */
{ "subl/v", OPR(0x10,0x49), BASE, ARG_OPR },
{ "subl/v", OPRL(0x10,0x49), BASE, ARG_OPRL },
{ "cmplt", OPR(0x10,0x4D), BASE, ARG_OPR },
{ "cmplt", OPRL(0x10,0x4D), BASE, ARG_OPRL },
{ "addq/v", OPR(0x10,0x60), BASE, ARG_OPR },
{ "addq/v", OPRL(0x10,0x60), BASE, ARG_OPRL },
{ "negq/v", OPR(0x10,0x69), BASE, ARG_OPRZ1 }, /* pseudo */
{ "negq/v", OPRL(0x10,0x69), BASE, ARG_OPRLZ1 }, /* pseudo */
{ "subq/v", OPR(0x10,0x69), BASE, ARG_OPR },
{ "subq/v", OPRL(0x10,0x69), BASE, ARG_OPRL },
{ "cmple", OPR(0x10,0x6D), BASE, ARG_OPR },
{ "cmple", OPRL(0x10,0x6D), BASE, ARG_OPRL },
{ "and", OPR(0x11,0x00), BASE, ARG_OPR },
{ "and", OPRL(0x11,0x00), BASE, ARG_OPRL },
{ "andnot", OPR(0x11,0x08), BASE, ARG_OPR }, /* alias */
{ "andnot", OPRL(0x11,0x08), BASE, ARG_OPRL }, /* alias */
{ "bic", OPR(0x11,0x08), BASE, ARG_OPR },
{ "bic", OPRL(0x11,0x08), BASE, ARG_OPRL },
{ "cmovlbs", OPR(0x11,0x14), BASE, ARG_OPR },
{ "cmovlbs", OPRL(0x11,0x14), BASE, ARG_OPRL },
{ "cmovlbc", OPR(0x11,0x16), BASE, ARG_OPR },
{ "cmovlbc", OPRL(0x11,0x16), BASE, ARG_OPRL },
{ "nop", OPR(0x11,0x20), BASE, { ZA, ZB, ZC } }, /* pseudo */
{ "clr", OPR(0x11,0x20), BASE, { ZA, ZB, RC } }, /* pseudo */
{ "mov", OPR(0x11,0x20), BASE, { ZA, RB, RC } }, /* pseudo */
{ "mov", OPR(0x11,0x20), BASE, { RA, RBA, RC } }, /* pseudo */
{ "mov", OPRL(0x11,0x20), BASE, { ZA, LIT, RC } }, /* pseudo */
{ "or", OPR(0x11,0x20), BASE, ARG_OPR }, /* alias */
{ "or", OPRL(0x11,0x20), BASE, ARG_OPRL }, /* alias */
{ "bis", OPR(0x11,0x20), BASE, ARG_OPR },
{ "bis", OPRL(0x11,0x20), BASE, ARG_OPRL },
{ "cmoveq", OPR(0x11,0x24), BASE, ARG_OPR },
{ "cmoveq", OPRL(0x11,0x24), BASE, ARG_OPRL },
{ "cmovne", OPR(0x11,0x26), BASE, ARG_OPR },
{ "cmovne", OPRL(0x11,0x26), BASE, ARG_OPRL },
{ "not", OPR(0x11,0x28), BASE, ARG_OPRZ1 }, /* pseudo */
{ "not", OPRL(0x11,0x28), BASE, ARG_OPRLZ1 }, /* pseudo */
{ "ornot", OPR(0x11,0x28), BASE, ARG_OPR },
{ "ornot", OPRL(0x11,0x28), BASE, ARG_OPRL },
{ "xor", OPR(0x11,0x40), BASE, ARG_OPR },
{ "xor", OPRL(0x11,0x40), BASE, ARG_OPRL },
{ "cmovlt", OPR(0x11,0x44), BASE, ARG_OPR },
{ "cmovlt", OPRL(0x11,0x44), BASE, ARG_OPRL },
{ "cmovge", OPR(0x11,0x46), BASE, ARG_OPR },
{ "cmovge", OPRL(0x11,0x46), BASE, ARG_OPRL },
{ "eqv", OPR(0x11,0x48), BASE, ARG_OPR },
{ "eqv", OPRL(0x11,0x48), BASE, ARG_OPRL },
{ "xornot", OPR(0x11,0x48), BASE, ARG_OPR }, /* alias */
{ "xornot", OPRL(0x11,0x48), BASE, ARG_OPRL }, /* alias */
{ "amask", OPR(0x11,0x61), BASE, ARG_OPRZ1 }, /* ev56 but */
{ "amask", OPRL(0x11,0x61), BASE, ARG_OPRLZ1 }, /* ev56 but */
{ "cmovle", OPR(0x11,0x64), BASE, ARG_OPR },
{ "cmovle", OPRL(0x11,0x64), BASE, ARG_OPRL },
{ "cmovgt", OPR(0x11,0x66), BASE, ARG_OPR },
{ "cmovgt", OPRL(0x11,0x66), BASE, ARG_OPRL },
{ "implver", OPRL_(0x11,0x6C)|(31<<21)|(1<<13),
0xFFFFFFE0, BASE, { RC } }, /* ev56 but */
{ "mskbl", OPR(0x12,0x02), BASE, ARG_OPR },
{ "mskbl", OPRL(0x12,0x02), BASE, ARG_OPRL },
{ "extbl", OPR(0x12,0x06), BASE, ARG_OPR },
{ "extbl", OPRL(0x12,0x06), BASE, ARG_OPRL },
{ "insbl", OPR(0x12,0x0B), BASE, ARG_OPR },
{ "insbl", OPRL(0x12,0x0B), BASE, ARG_OPRL },
{ "mskwl", OPR(0x12,0x12), BASE, ARG_OPR },
{ "mskwl", OPRL(0x12,0x12), BASE, ARG_OPRL },
{ "extwl", OPR(0x12,0x16), BASE, ARG_OPR },
{ "extwl", OPRL(0x12,0x16), BASE, ARG_OPRL },
{ "inswl", OPR(0x12,0x1B), BASE, ARG_OPR },
{ "inswl", OPRL(0x12,0x1B), BASE, ARG_OPRL },
{ "mskll", OPR(0x12,0x22), BASE, ARG_OPR },
{ "mskll", OPRL(0x12,0x22), BASE, ARG_OPRL },
{ "extll", OPR(0x12,0x26), BASE, ARG_OPR },
{ "extll", OPRL(0x12,0x26), BASE, ARG_OPRL },
{ "insll", OPR(0x12,0x2B), BASE, ARG_OPR },
{ "insll", OPRL(0x12,0x2B), BASE, ARG_OPRL },
{ "zap", OPR(0x12,0x30), BASE, ARG_OPR },
{ "zap", OPRL(0x12,0x30), BASE, ARG_OPRL },
{ "zapnot", OPR(0x12,0x31), BASE, ARG_OPR },
{ "zapnot", OPRL(0x12,0x31), BASE, ARG_OPRL },
{ "mskql", OPR(0x12,0x32), BASE, ARG_OPR },
{ "mskql", OPRL(0x12,0x32), BASE, ARG_OPRL },
{ "srl", OPR(0x12,0x34), BASE, ARG_OPR },
{ "srl", OPRL(0x12,0x34), BASE, ARG_OPRL },
{ "extql", OPR(0x12,0x36), BASE, ARG_OPR },
{ "extql", OPRL(0x12,0x36), BASE, ARG_OPRL },
{ "sll", OPR(0x12,0x39), BASE, ARG_OPR },
{ "sll", OPRL(0x12,0x39), BASE, ARG_OPRL },
{ "insql", OPR(0x12,0x3B), BASE, ARG_OPR },
{ "insql", OPRL(0x12,0x3B), BASE, ARG_OPRL },
{ "sra", OPR(0x12,0x3C), BASE, ARG_OPR },
{ "sra", OPRL(0x12,0x3C), BASE, ARG_OPRL },
{ "mskwh", OPR(0x12,0x52), BASE, ARG_OPR },
{ "mskwh", OPRL(0x12,0x52), BASE, ARG_OPRL },
{ "inswh", OPR(0x12,0x57), BASE, ARG_OPR },
{ "inswh", OPRL(0x12,0x57), BASE, ARG_OPRL },
{ "extwh", OPR(0x12,0x5A), BASE, ARG_OPR },
{ "extwh", OPRL(0x12,0x5A), BASE, ARG_OPRL },
{ "msklh", OPR(0x12,0x62), BASE, ARG_OPR },
{ "msklh", OPRL(0x12,0x62), BASE, ARG_OPRL },
{ "inslh", OPR(0x12,0x67), BASE, ARG_OPR },
{ "inslh", OPRL(0x12,0x67), BASE, ARG_OPRL },
{ "extlh", OPR(0x12,0x6A), BASE, ARG_OPR },
{ "extlh", OPRL(0x12,0x6A), BASE, ARG_OPRL },
{ "mskqh", OPR(0x12,0x72), BASE, ARG_OPR },
{ "mskqh", OPRL(0x12,0x72), BASE, ARG_OPRL },
{ "insqh", OPR(0x12,0x77), BASE, ARG_OPR },
{ "insqh", OPRL(0x12,0x77), BASE, ARG_OPRL },
{ "extqh", OPR(0x12,0x7A), BASE, ARG_OPR },
{ "extqh", OPRL(0x12,0x7A), BASE, ARG_OPRL },
{ "mull", OPR(0x13,0x00), BASE, ARG_OPR },
{ "mull", OPRL(0x13,0x00), BASE, ARG_OPRL },
{ "mulq", OPR(0x13,0x20), BASE, ARG_OPR },
{ "mulq", OPRL(0x13,0x20), BASE, ARG_OPRL },
{ "umulh", OPR(0x13,0x30), BASE, ARG_OPR },
{ "umulh", OPRL(0x13,0x30), BASE, ARG_OPRL },
{ "mull/v", OPR(0x13,0x40), BASE, ARG_OPR },
{ "mull/v", OPRL(0x13,0x40), BASE, ARG_OPRL },
{ "mulq/v", OPR(0x13,0x60), BASE, ARG_OPR },
{ "mulq/v", OPRL(0x13,0x60), BASE, ARG_OPRL },
{ "itofs", FP(0x14,0x004), CIX, { RA, ZB, FC } },
{ "sqrtf/c", FP(0x14,0x00A), CIX, ARG_FPZ1 },
{ "sqrts/c", FP(0x14,0x00B), CIX, ARG_FPZ1 },
{ "itoff", FP(0x14,0x014), CIX, { RA, ZB, FC } },
{ "itoft", FP(0x14,0x024), CIX, { RA, ZB, FC } },
{ "sqrtg/c", FP(0x14,0x02A), CIX, ARG_FPZ1 },
{ "sqrtt/c", FP(0x14,0x02B), CIX, ARG_FPZ1 },
{ "sqrts/m", FP(0x14,0x04B), CIX, ARG_FPZ1 },
{ "sqrtt/m", FP(0x14,0x06B), CIX, ARG_FPZ1 },
{ "sqrtf", FP(0x14,0x08A), CIX, ARG_FPZ1 },
{ "sqrts", FP(0x14,0x08B), CIX, ARG_FPZ1 },
{ "sqrtg", FP(0x14,0x0AA), CIX, ARG_FPZ1 },
{ "sqrtt", FP(0x14,0x0AB), CIX, ARG_FPZ1 },
{ "sqrts/d", FP(0x14,0x0CB), CIX, ARG_FPZ1 },
{ "sqrtt/d", FP(0x14,0x0EB), CIX, ARG_FPZ1 },
{ "sqrtf/uc", FP(0x14,0x10A), CIX, ARG_FPZ1 },
{ "sqrts/uc", FP(0x14,0x10B), CIX, ARG_FPZ1 },
{ "sqrtg/uc", FP(0x14,0x12A), CIX, ARG_FPZ1 },
{ "sqrtt/uc", FP(0x14,0x12B), CIX, ARG_FPZ1 },
{ "sqrts/um", FP(0x14,0x14B), CIX, ARG_FPZ1 },
{ "sqrtt/um", FP(0x14,0x16B), CIX, ARG_FPZ1 },
{ "sqrtf/u", FP(0x14,0x18A), CIX, ARG_FPZ1 },
{ "sqrts/u", FP(0x14,0x18B), CIX, ARG_FPZ1 },
{ "sqrtg/u", FP(0x14,0x1AA), CIX, ARG_FPZ1 },
{ "sqrtt/u", FP(0x14,0x1AB), CIX, ARG_FPZ1 },
{ "sqrts/ud", FP(0x14,0x1CB), CIX, ARG_FPZ1 },
{ "sqrtt/ud", FP(0x14,0x1EB), CIX, ARG_FPZ1 },
{ "sqrtf/sc", FP(0x14,0x40A), CIX, ARG_FPZ1 },
{ "sqrtg/sc", FP(0x14,0x42A), CIX, ARG_FPZ1 },
{ "sqrtf/s", FP(0x14,0x48A), CIX, ARG_FPZ1 },
{ "sqrtg/s", FP(0x14,0x4AA), CIX, ARG_FPZ1 },
{ "sqrtf/suc", FP(0x14,0x50A), CIX, ARG_FPZ1 },
{ "sqrts/suc", FP(0x14,0x50B), CIX, ARG_FPZ1 },
{ "sqrtg/suc", FP(0x14,0x52A), CIX, ARG_FPZ1 },
{ "sqrtt/suc", FP(0x14,0x52B), CIX, ARG_FPZ1 },
{ "sqrts/sum", FP(0x14,0x54B), CIX, ARG_FPZ1 },
{ "sqrtt/sum", FP(0x14,0x56B), CIX, ARG_FPZ1 },
{ "sqrtf/su", FP(0x14,0x58A), CIX, ARG_FPZ1 },
{ "sqrts/su", FP(0x14,0x58B), CIX, ARG_FPZ1 },
{ "sqrtg/su", FP(0x14,0x5AA), CIX, ARG_FPZ1 },
{ "sqrtt/su", FP(0x14,0x5AB), CIX, ARG_FPZ1 },
{ "sqrts/sud", FP(0x14,0x5CB), CIX, ARG_FPZ1 },
{ "sqrtt/sud", FP(0x14,0x5EB), CIX, ARG_FPZ1 },
{ "sqrts/suic", FP(0x14,0x70B), CIX, ARG_FPZ1 },
{ "sqrtt/suic", FP(0x14,0x72B), CIX, ARG_FPZ1 },
{ "sqrts/suim", FP(0x14,0x74B), CIX, ARG_FPZ1 },
{ "sqrtt/suim", FP(0x14,0x76B), CIX, ARG_FPZ1 },
{ "sqrts/sui", FP(0x14,0x78B), CIX, ARG_FPZ1 },
{ "sqrtt/sui", FP(0x14,0x7AB), CIX, ARG_FPZ1 },
{ "sqrts/suid", FP(0x14,0x7CB), CIX, ARG_FPZ1 },
{ "sqrtt/suid", FP(0x14,0x7EB), CIX, ARG_FPZ1 },
{ "addf/c", FP(0x15,0x000), BASE, ARG_FP },
{ "subf/c", FP(0x15,0x001), BASE, ARG_FP },
{ "mulf/c", FP(0x15,0x002), BASE, ARG_FP },
{ "divf/c", FP(0x15,0x003), BASE, ARG_FP },
{ "cvtdg/c", FP(0x15,0x01E), BASE, ARG_FPZ1 },
{ "addg/c", FP(0x15,0x020), BASE, ARG_FP },
{ "subg/c", FP(0x15,0x021), BASE, ARG_FP },