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9cf7e5687f
Most optional operands to powerpc instructions use a default value of
zero, but there are a few exceptions. Those have been handled by
PPC_OPERAND_OPTIONAL_VALUE and an entry in the powerpc_operands table
for the default value, smuggled in the shift field. This patch
changes that to using the operand extract function to provide non-zero
defaults.
I've also moved the code determining whether optional operands are
provided or omitted, to the point the first optional operand is seen,
and allowed for the possibility of optional base register operands
in a future patch.
The patch does change the error you get on invalid assembly like
ld 3,4
You'll now see "missing operand" rather than
"syntax error; end of line, expected `('".
gas/
* config/tc-ppc.c (md_assemble): Delay counting of optional
operands until one is encountered. Allow for the possibility
of optional base regs, ie. PPC_OPERAND_PARENS. Call
ppc_optional_operand_value with extra args.
include/
* opcode/ppc.h (struct powerpc_operand): Correct "insert" comment.
Mention use of "extract" function to provide default value.
(PPC_OPERAND_OPTIONAL_VALUE): Delete.
(ppc_optional_operand_value): Rewrite to use extract function.
opcodes/
* ppc-dis.c (operand_value_powerpc): Init "invalid".
(skip_optional_operands): Count optional operands, and update
ppc_optional_operand_value call.
* ppc-opc.c (extract_dxdn): Remove ATTRIBUTE_UNUSED from used arg.
(extract_vlensi): Likewise.
(extract_fxm): Return default value for missing optional operand.
(extract_ls, extract_raq, extract_tbr): Likewise.
(insert_sxl, extract_sxl): New functions.
(insert_esync, extract_esync): Remove Power9 handling and simplify.
(powerpc_operands <FXM4, TBR>): Delete PPC_OPERAND_OPTIONAL_VALUE
flag and extra entry.
(powerpc_operands <SXL>): Likewise, and use insert_sxl and
extract_sxl.
500 lines
17 KiB
C
500 lines
17 KiB
C
/* ppc.h -- Header file for PowerPC opcode table
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Copyright (C) 1994-2018 Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Cygnus Support
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This file is part of GDB, GAS, and the GNU binutils.
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GDB, GAS, and the GNU binutils are free software; you can redistribute
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them and/or modify them under the terms of the GNU General Public
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License as published by the Free Software Foundation; either version 3,
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or (at your option) any later version.
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GDB, GAS, and the GNU binutils are distributed in the hope that they
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will be useful, but WITHOUT ANY WARRANTY; without even the implied
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warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this file; see the file COPYING3. If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef PPC_H
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#define PPC_H
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#include "bfd_stdint.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef uint64_t ppc_cpu_t;
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#if BFD_HOST_64BIT_LONG
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# define PPC_INT_FMT "l"
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#elif defined (__MSVCRT__)
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# define PPC_INT_FMT "I64"
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#else
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# define PPC_INT_FMT "ll"
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#endif
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/* The opcode table is an array of struct powerpc_opcode. */
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struct powerpc_opcode
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{
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/* The opcode name. */
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const char *name;
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/* The opcode itself. Those bits which will be filled in with
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operands are zeroes. */
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uint64_t opcode;
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/* The opcode mask. This is used by the disassembler. This is a
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mask containing ones indicating those bits which must match the
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opcode field, and zeroes indicating those bits which need not
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match (and are presumably filled in by operands). */
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uint64_t mask;
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/* One bit flags for the opcode. These are used to indicate which
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specific processors support the instructions. The defined values
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are listed below. */
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ppc_cpu_t flags;
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/* One bit flags for the opcode. These are used to indicate which
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specific processors no longer support the instructions. The defined
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values are listed below. */
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ppc_cpu_t deprecated;
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/* An array of operand codes. Each code is an index into the
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operand table. They appear in the order which the operands must
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appear in assembly code, and are terminated by a zero. */
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unsigned char operands[8];
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};
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/* The table itself is sorted by major opcode number, and is otherwise
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in the order in which the disassembler should consider
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instructions. */
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extern const struct powerpc_opcode powerpc_opcodes[];
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extern const unsigned int powerpc_num_opcodes;
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extern const struct powerpc_opcode vle_opcodes[];
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extern const unsigned int vle_num_opcodes;
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extern const struct powerpc_opcode spe2_opcodes[];
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extern const unsigned int spe2_num_opcodes;
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/* Values defined for the flags field of a struct powerpc_opcode. */
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/* Opcode is defined for the PowerPC architecture. */
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#define PPC_OPCODE_PPC 0x1ull
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/* Opcode is defined for the POWER (RS/6000) architecture. */
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#define PPC_OPCODE_POWER 0x2ull
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/* Opcode is defined for the POWER2 (Rios 2) architecture. */
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#define PPC_OPCODE_POWER2 0x4ull
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/* Opcode is only defined on 64 bit architectures. */
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#define PPC_OPCODE_64 0x8ull
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/* Opcode is supported by the Motorola PowerPC 601 processor. The 601
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is assumed to support all PowerPC (PPC_OPCODE_PPC) instructions,
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but it also supports many additional POWER instructions. */
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#define PPC_OPCODE_601 0x10ull
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/* Opcode is supported in both the Power and PowerPC architectures
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(ie, compiler's -mcpu=common or assembler's -mcom). More than just
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the intersection of PPC_OPCODE_PPC with the union of PPC_OPCODE_POWER
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and PPC_OPCODE_POWER2 because many instructions changed mnemonics
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between POWER and POWERPC. */
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#define PPC_OPCODE_COMMON 0x20ull
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/* Opcode is supported for any Power or PowerPC platform (this is
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for the assembler's -many option, and it eliminates duplicates). */
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#define PPC_OPCODE_ANY 0x40ull
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/* Opcode is supported as part of the 64-bit bridge. */
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#define PPC_OPCODE_64_BRIDGE 0x80ull
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/* Opcode is supported by Altivec Vector Unit */
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#define PPC_OPCODE_ALTIVEC 0x100ull
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/* Opcode is supported by PowerPC 403 processor. */
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#define PPC_OPCODE_403 0x200ull
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/* Opcode is supported by PowerPC BookE processor. */
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#define PPC_OPCODE_BOOKE 0x400ull
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/* Opcode is only supported by Power4 architecture. */
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#define PPC_OPCODE_POWER4 0x800ull
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/* Opcode is only supported by e500x2 Core.
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This bit, PPC_OPCODE_EFS, PPC_OPCODE_VLE, and all those with APU in
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their comment mark opcodes so that when those instructions are used
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an APUinfo entry can be generated. */
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#define PPC_OPCODE_SPE 0x1000ull
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/* Opcode is supported by Integer select APU. */
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#define PPC_OPCODE_ISEL 0x2000ull
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/* Opcode is an e500 SPE floating point instruction. */
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#define PPC_OPCODE_EFS 0x4000ull
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/* Opcode is supported by branch locking APU. */
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#define PPC_OPCODE_BRLOCK 0x8000ull
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/* Opcode is supported by performance monitor APU. */
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#define PPC_OPCODE_PMR 0x10000ull
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/* Opcode is supported by cache locking APU. */
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#define PPC_OPCODE_CACHELCK 0x20000ull
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/* Opcode is supported by machine check APU. */
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#define PPC_OPCODE_RFMCI 0x40000ull
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/* Opcode is supported by PowerPC 440 processor. */
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#define PPC_OPCODE_440 0x80000ull
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/* Opcode is only supported by Power5 architecture. */
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#define PPC_OPCODE_POWER5 0x100000ull
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/* Opcode is supported by PowerPC e300 family. */
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#define PPC_OPCODE_E300 0x200000ull
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/* Opcode is only supported by Power6 architecture. */
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#define PPC_OPCODE_POWER6 0x400000ull
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/* Opcode is only supported by PowerPC Cell family. */
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#define PPC_OPCODE_CELL 0x800000ull
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/* Opcode is supported by CPUs with paired singles support. */
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#define PPC_OPCODE_PPCPS 0x1000000ull
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/* Opcode is supported by Power E500MC */
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#define PPC_OPCODE_E500MC 0x2000000ull
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/* Opcode is supported by PowerPC 405 processor. */
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#define PPC_OPCODE_405 0x4000000ull
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/* Opcode is supported by Vector-Scalar (VSX) Unit */
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#define PPC_OPCODE_VSX 0x8000000ull
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/* Opcode is only supported by Power7 architecture. */
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#define PPC_OPCODE_POWER7 0x10000000ull
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/* Opcode is supported by A2. */
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#define PPC_OPCODE_A2 0x20000000ull
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/* Opcode is supported by PowerPC 476 processor. */
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#define PPC_OPCODE_476 0x40000000ull
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/* Opcode is supported by AppliedMicro Titan core */
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#define PPC_OPCODE_TITAN 0x80000000ull
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/* Opcode which is supported by the e500 family */
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#define PPC_OPCODE_E500 0x100000000ull
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/* Opcode is supported by Power E6500 */
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#define PPC_OPCODE_E6500 0x200000000ull
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/* Opcode is supported by Thread management APU */
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#define PPC_OPCODE_TMR 0x400000000ull
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/* Opcode which is supported by the VLE extension. */
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#define PPC_OPCODE_VLE 0x800000000ull
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/* Opcode is only supported by Power8 architecture. */
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#define PPC_OPCODE_POWER8 0x1000000000ull
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/* Opcode is supported by ppc750cl/Gekko/Broadway. */
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#define PPC_OPCODE_750 0x2000000000ull
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/* Opcode is supported by ppc7450. */
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#define PPC_OPCODE_7450 0x4000000000ull
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/* Opcode is supported by ppc821/850/860. */
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#define PPC_OPCODE_860 0x8000000000ull
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/* Opcode is only supported by Power9 architecture. */
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#define PPC_OPCODE_POWER9 0x10000000000ull
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/* Opcode is supported by e200z4. */
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#define PPC_OPCODE_E200Z4 0x20000000000ull
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/* Disassemble to instructions matching later in the opcode table
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with fewer "mask" bits set rather than the earlist match. Fewer
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"mask" bits set imply a more general form of the opcode, in fact
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the underlying machine instruction. */
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#define PPC_OPCODE_RAW 0x40000000000ull
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/* Opcode is supported by PowerPC LSP */
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#define PPC_OPCODE_LSP 0x80000000000ull
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/* Opcode is only supported by Freescale SPE2 APU. */
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#define PPC_OPCODE_SPE2 0x100000000000ull
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/* Opcode is supported by EFS2. */
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#define PPC_OPCODE_EFS2 0x200000000000ull
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/* A macro to extract the major opcode from an instruction. */
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#define PPC_OP(i) (((i) >> 26) & 0x3f)
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/* A macro to determine if the instruction is a 2-byte VLE insn. */
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#define PPC_OP_SE_VLE(m) ((m) <= 0xffff)
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/* A macro to extract the major opcode from a VLE instruction. */
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#define VLE_OP(i,m) (((i) >> ((m) <= 0xffff ? 10 : 26)) & 0x3f)
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/* A macro to convert a VLE opcode to a VLE opcode segment. */
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#define VLE_OP_TO_SEG(i) ((i) >> 1)
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/* A macro to extract the extended opcode from a SPE2 instruction. */
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#define SPE2_XOP(i) ((i) & 0x7ff)
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/* A macro to convert a SPE2 extended opcode to a SPE2 xopcode segment. */
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#define SPE2_XOP_TO_SEG(i) ((i) >> 7)
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/* The operands table is an array of struct powerpc_operand. */
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struct powerpc_operand
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{
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/* A bitmask of bits in the operand. */
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uint64_t bitm;
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/* The shift operation to be applied to the operand. No shift
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is made if this is zero. For positive values, the operand
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is shifted left by SHIFT. For negative values, the operand
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is shifted right by -SHIFT. Use PPC_OPSHIFT_INV to indicate
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that BITM and SHIFT cannot be used to determine where the
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operand goes in the insn. */
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int shift;
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/* Insertion function. This is used by the assembler. To insert an
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operand value into an instruction, check this field.
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If it is NULL, execute
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if (o->shift >= 0)
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i |= (op & o->bitm) << o->shift;
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else
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i |= (op & o->bitm) >> -o->shift;
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(i is the instruction which we are filling in, o is a pointer to
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this structure, and op is the operand value).
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If this field is not NULL, then simply call it with the
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instruction and the operand value. It will return the new value
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of the instruction. If the operand value is illegal, *ERRMSG
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will be set to a warning string (the operand will be inserted in
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any case). If the operand value is legal, *ERRMSG will be
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unchanged (most operands can accept any value). */
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uint64_t (*insert)
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(uint64_t instruction, int64_t op, ppc_cpu_t dialect, const char **errmsg);
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/* Extraction function. This is used by the disassembler. To
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extract this operand type from an instruction, check this field.
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If it is NULL, compute
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if (o->shift >= 0)
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op = (i >> o->shift) & o->bitm;
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else
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op = (i << -o->shift) & o->bitm;
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if ((o->flags & PPC_OPERAND_SIGNED) != 0)
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sign_extend (op);
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(i is the instruction, o is a pointer to this structure, and op
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is the result).
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If this field is not NULL, then simply call it with the
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instruction value. It will return the value of the operand.
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*INVALID will be set to one by the extraction function if this
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operand type can not be extracted from this operand (i.e., the
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instruction does not match). If the operand is valid, *INVALID
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will not be changed. *INVALID will always be non-negative when
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used to extract a field from an instruction.
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The extraction function is also called by both the assembler and
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disassembler if an operand is optional, in which case the
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function should return the default value of the operand.
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*INVALID is negative in this case, and is the negative count of
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omitted optional operands up to and including this operand. */
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int64_t (*extract) (uint64_t instruction, ppc_cpu_t dialect, int *invalid);
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/* One bit syntax flags. */
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unsigned long flags;
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};
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/* Elements in the table are retrieved by indexing with values from
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the operands field of the powerpc_opcodes table. */
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extern const struct powerpc_operand powerpc_operands[];
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extern const unsigned int num_powerpc_operands;
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/* Use with the shift field of a struct powerpc_operand to indicate
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that BITM and SHIFT cannot be used to determine where the operand
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goes in the insn. */
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#define PPC_OPSHIFT_INV (-1U << 31)
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/* Values defined for the flags field of a struct powerpc_operand.
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Keep the register bits low: They need to fit in an unsigned short. */
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/* This operand names a register. The disassembler uses this to print
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register names with a leading 'r'. */
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#define PPC_OPERAND_GPR (0x1)
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/* Like PPC_OPERAND_GPR, but don't print a leading 'r' for r0. */
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#define PPC_OPERAND_GPR_0 (0x2)
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/* This operand names a floating point register. The disassembler
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prints these with a leading 'f'. */
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#define PPC_OPERAND_FPR (0x4)
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/* This operand names a vector unit register. The disassembler
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prints these with a leading 'v'. */
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#define PPC_OPERAND_VR (0x8)
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/* This operand names a vector-scalar unit register. The disassembler
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prints these with a leading 'vs'. */
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#define PPC_OPERAND_VSR (0x10)
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/* This operand may use the symbolic names for the CR fields (even
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without -mregnames), which are
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lt 0 gt 1 eq 2 so 3 un 3
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cr0 0 cr1 1 cr2 2 cr3 3
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cr4 4 cr5 5 cr6 6 cr7 7
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These may be combined arithmetically, as in cr2*4+gt. These are
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only supported on the PowerPC, not the POWER. */
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#define PPC_OPERAND_CR_BIT (0x20)
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/* This is a CR FIELD that does not use symbolic names (unless
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-mregnames is in effect). */
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#define PPC_OPERAND_CR_REG (0x40)
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/* This operand names a special purpose register. */
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#define PPC_OPERAND_SPR (0x80)
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/* This operand names a paired-single graphics quantization register. */
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#define PPC_OPERAND_GQR (0x100)
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/* This operand is a relative branch displacement. The disassembler
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prints these symbolically if possible. */
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#define PPC_OPERAND_RELATIVE (0x200)
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/* This operand is an absolute branch address. The disassembler
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prints these symbolically if possible. */
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#define PPC_OPERAND_ABSOLUTE (0x400)
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/* This operand takes signed values. */
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#define PPC_OPERAND_SIGNED (0x800)
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/* This operand takes signed values, but also accepts a full positive
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range of values when running in 32 bit mode. That is, if bits is
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16, it takes any value from -0x8000 to 0xffff. In 64 bit mode,
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this flag is ignored. */
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#define PPC_OPERAND_SIGNOPT (0x1000)
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/* The next operand should be wrapped in parentheses rather than
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separated from this one by a comma. This is used for the load and
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store instructions which want their operands to look like
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reg,displacement(reg)
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*/
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#define PPC_OPERAND_PARENS (0x2000)
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/* This operand is for the DS field in a DS form instruction. */
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#define PPC_OPERAND_DS (0x4000)
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/* This operand is for the DQ field in a DQ form instruction. */
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#define PPC_OPERAND_DQ (0x8000)
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/* This operand should be regarded as a negative number for the
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purposes of overflow checking (i.e., the normal most negative
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number is disallowed and one more than the normal most positive
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number is allowed). This flag will only be set for a signed
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operand. */
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#define PPC_OPERAND_NEGATIVE (0x10000)
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/* Valid range of operand is 0..n rather than 0..n-1. */
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#define PPC_OPERAND_PLUS1 (0x20000)
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/* This operand is optional, and is zero if omitted. This is used for
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example, in the optional BF field in the comparison instructions. The
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assembler must count the number of operands remaining on the line,
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and the number of operands remaining for the opcode, and decide
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whether this operand is present or not. The disassembler should
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print this operand out only if it is not zero. */
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#define PPC_OPERAND_OPTIONAL (0x80000)
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/* This flag is only used with PPC_OPERAND_OPTIONAL. If this operand
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is omitted, then for the next operand use this operand value plus
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1, ignoring the next operand field for the opcode. This wretched
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hack is needed because the Power rotate instructions can take
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either 4 or 5 operands. The disassembler should print this operand
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out regardless of the PPC_OPERAND_OPTIONAL field. */
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#define PPC_OPERAND_NEXT (0x100000)
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/* This flag is only used with PPC_OPERAND_OPTIONAL. The operand is
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only optional when generating 32-bit code. */
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#define PPC_OPERAND_OPTIONAL32 (0x400000)
|
||
|
||
/* Xilinx APU and FSL related operands */
|
||
#define PPC_OPERAND_FSL (0x800000)
|
||
#define PPC_OPERAND_FCR (0x1000000)
|
||
#define PPC_OPERAND_UDI (0x2000000)
|
||
|
||
/* The POWER and PowerPC assemblers use a few macros. We keep them
|
||
with the operands table for simplicity. The macro table is an
|
||
array of struct powerpc_macro. */
|
||
|
||
struct powerpc_macro
|
||
{
|
||
/* The macro name. */
|
||
const char *name;
|
||
|
||
/* The number of operands the macro takes. */
|
||
unsigned int operands;
|
||
|
||
/* One bit flags for the opcode. These are used to indicate which
|
||
specific processors support the instructions. The values are the
|
||
same as those for the struct powerpc_opcode flags field. */
|
||
ppc_cpu_t flags;
|
||
|
||
/* A format string to turn the macro into a normal instruction.
|
||
Each %N in the string is replaced with operand number N (zero
|
||
based). */
|
||
const char *format;
|
||
};
|
||
|
||
extern const struct powerpc_macro powerpc_macros[];
|
||
extern const int powerpc_num_macros;
|
||
|
||
extern ppc_cpu_t ppc_parse_cpu (ppc_cpu_t, ppc_cpu_t *, const char *);
|
||
|
||
static inline int64_t
|
||
ppc_optional_operand_value (const struct powerpc_operand *operand,
|
||
uint64_t insn,
|
||
ppc_cpu_t dialect,
|
||
int num_optional)
|
||
{
|
||
if (operand->extract)
|
||
return (*operand->extract) (insn, dialect, &num_optional);
|
||
return 0;
|
||
}
|
||
|
||
/* PowerPC VLE insns. */
|
||
/* Form I16L, uses 16A relocs. */
|
||
#define E_OR2I_INSN 0x7000C000
|
||
#define E_AND2I_DOT_INSN 0x7000C800
|
||
#define E_OR2IS_INSN 0x7000D000
|
||
#define E_LIS_INSN 0x7000E000
|
||
#define E_AND2IS_DOT_INSN 0x7000E800
|
||
|
||
/* Form I16A, uses 16D relocs. */
|
||
#define E_ADD2I_DOT_INSN 0x70008800
|
||
#define E_ADD2IS_INSN 0x70009000
|
||
#define E_CMP16I_INSN 0x70009800
|
||
#define E_MULL2I_INSN 0x7000A000
|
||
#define E_CMPL16I_INSN 0x7000A800
|
||
#define E_CMPH16I_INSN 0x7000B000
|
||
#define E_CMPHL16I_INSN 0x7000B800
|
||
|
||
#ifdef __cplusplus
|
||
}
|
||
#endif
|
||
|
||
#endif /* PPC_H */
|