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authorPaul Mackerras <paulus@samba.org>2005-10-28 22:53:37 +1000
committerPaul Mackerras <paulus@samba.org>2005-10-28 22:53:37 +1000
commitf78541dcec327b0c46b150ee7d727f3db80275c4 (patch)
tree9336801742d93ffa0c84c76e2b3cdc5b50c7125b /arch/powerpc/xmon/ppc.h
parentc032524f0ddea5fcc3a2cece0d4a61f37e5ca9cd (diff)
downloadlinaro-lsk-f78541dcec327b0c46b150ee7d727f3db80275c4.tar.gz
powerpc: Merge xmon
The merged version follows the ppc64 version pretty closely mostly, and in fact ARCH=ppc64 now uses the arch/powerpc/xmon version. The main difference for ppc64 is that the 'p' command to call show_state (which was always pretty dodgy) has been replaced by the ppc32 'p' command, which calls a given procedure (so in fact the old 'p' command behaviour can be achieved with 'p $show_state'). Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/xmon/ppc.h')
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diff --git a/arch/powerpc/xmon/ppc.h b/arch/powerpc/xmon/ppc.h
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+/* ppc.h -- Header file for PowerPC opcode table
+ Copyright 1994, 1995, 1999, 2000, 2001, 2002, 2003
+ Free Software Foundation, Inc.
+ Written by Ian Lance Taylor, Cygnus Support
+
+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
+1, 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, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#ifndef PPC_H
+#define PPC_H
+
+/* The opcode table is an array of struct powerpc_opcode. */
+
+struct powerpc_opcode
+{
+ /* The opcode name. */
+ const char *name;
+
+ /* The opcode itself. Those bits which will be filled in with
+ operands are zeroes. */
+ unsigned long 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 long mask;
+
+ /* One bit flags for the opcode. These are used to indicate which
+ specific processors support the instructions. The defined values
+ are listed below. */
+ unsigned long 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[8];
+};
+
+/* 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 powerpc_opcode powerpc_opcodes[];
+extern const int powerpc_num_opcodes;
+
+/* Values defined for the flags field of a struct powerpc_opcode. */
+
+/* Opcode is defined for the PowerPC architecture. */
+#define PPC_OPCODE_PPC 1
+
+/* Opcode is defined for the POWER (RS/6000) architecture. */
+#define PPC_OPCODE_POWER 2
+
+/* Opcode is defined for the POWER2 (Rios 2) architecture. */
+#define PPC_OPCODE_POWER2 4
+
+/* Opcode is only defined on 32 bit architectures. */
+#define PPC_OPCODE_32 8
+
+/* Opcode is only defined on 64 bit architectures. */
+#define PPC_OPCODE_64 0x10
+
+/* Opcode is supported by the Motorola PowerPC 601 processor. The 601
+ is assumed to support all PowerPC (PPC_OPCODE_PPC) instructions,
+ but it also supports many additional POWER instructions. */
+#define PPC_OPCODE_601 0x20
+
+/* Opcode is supported in both the Power and PowerPC architectures
+ (ie, compiler's -mcpu=common or assembler's -mcom). */
+#define PPC_OPCODE_COMMON 0x40
+
+/* Opcode is supported for any Power or PowerPC platform (this is
+ for the assembler's -many option, and it eliminates duplicates). */
+#define PPC_OPCODE_ANY 0x80
+
+/* Opcode is supported as part of the 64-bit bridge. */
+#define PPC_OPCODE_64_BRIDGE 0x100
+
+/* Opcode is supported by Altivec Vector Unit */
+#define PPC_OPCODE_ALTIVEC 0x200
+
+/* Opcode is supported by PowerPC 403 processor. */
+#define PPC_OPCODE_403 0x400
+
+/* Opcode is supported by PowerPC BookE processor. */
+#define PPC_OPCODE_BOOKE 0x800
+
+/* Opcode is only supported by 64-bit PowerPC BookE processor. */
+#define PPC_OPCODE_BOOKE64 0x1000
+
+/* Opcode is supported by PowerPC 440 processor. */
+#define PPC_OPCODE_440 0x2000
+
+/* Opcode is only supported by Power4 architecture. */
+#define PPC_OPCODE_POWER4 0x4000
+
+/* Opcode isn't supported by Power4 architecture. */
+#define PPC_OPCODE_NOPOWER4 0x8000
+
+/* Opcode is only supported by POWERPC Classic architecture. */
+#define PPC_OPCODE_CLASSIC 0x10000
+
+/* Opcode is only supported by e500x2 Core. */
+#define PPC_OPCODE_SPE 0x20000
+
+/* Opcode is supported by e500x2 Integer select APU. */
+#define PPC_OPCODE_ISEL 0x40000
+
+/* Opcode is an e500 SPE floating point instruction. */
+#define PPC_OPCODE_EFS 0x80000
+
+/* Opcode is supported by branch locking APU. */
+#define PPC_OPCODE_BRLOCK 0x100000
+
+/* Opcode is supported by performance monitor APU. */
+#define PPC_OPCODE_PMR 0x200000
+
+/* Opcode is supported by cache locking APU. */
+#define PPC_OPCODE_CACHELCK 0x400000
+
+/* Opcode is supported by machine check APU. */
+#define PPC_OPCODE_RFMCI 0x800000
+
+/* A macro to extract the major opcode from an instruction. */
+#define PPC_OP(i) (((i) >> 26) & 0x3f)
+
+/* The operands table is an array of struct powerpc_operand. */
+
+struct powerpc_operand
+{
+ /* The number of bits in the operand. */
+ int bits;
+
+ /* How far the operand is left shifted in the instruction. */
+ int shift;
+
+ /* 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 long (*insert)
+ (unsigned long instruction, long op, int dialect, 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 & PPC_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. */
+ long (*extract) (unsigned long instruction, int dialect, int *invalid);
+
+ /* One bit syntax flags. */
+ unsigned long flags;
+};
+
+/* Elements in the table are retrieved by indexing with values from
+ the operands field of the powerpc_opcodes table. */
+
+extern const struct powerpc_operand powerpc_operands[];
+
+/* Values defined for the flags field of a struct powerpc_operand. */
+
+/* This operand takes signed values. */
+#define PPC_OPERAND_SIGNED (01)
+
+/* This operand takes signed values, but also accepts a full positive
+ range of values when running in 32 bit mode. That is, if bits is
+ 16, it takes any value from -0x8000 to 0xffff. In 64 bit mode,
+ this flag is ignored. */
+#define PPC_OPERAND_SIGNOPT (02)
+
+/* This operand does not actually exist in the assembler input. This
+ is used to support extended mnemonics such as mr, 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 valid argument. */
+#define PPC_OPERAND_FAKE (04)
+
+/* The next operand should be wrapped in parentheses rather than
+ separated from this one by a comma. This is used for the load and
+ store instructions which want their operands to look like
+ reg,displacement(reg)
+ */
+#define PPC_OPERAND_PARENS (010)
+
+/* This operand may use the symbolic names for the CR fields, which
+ are
+ lt 0 gt 1 eq 2 so 3 un 3
+ cr0 0 cr1 1 cr2 2 cr3 3
+ cr4 4 cr5 5 cr6 6 cr7 7
+ These may be combined arithmetically, as in cr2*4+gt. These are
+ only supported on the PowerPC, not the POWER. */
+#define PPC_OPERAND_CR (020)
+
+/* This operand names a register. The disassembler uses this to print
+ register names with a leading 'r'. */
+#define PPC_OPERAND_GPR (040)
+
+/* This operand names a floating point register. The disassembler
+ prints these with a leading 'f'. */
+#define PPC_OPERAND_FPR (0100)
+
+/* This operand is a relative branch displacement. The disassembler
+ prints these symbolically if possible. */
+#define PPC_OPERAND_RELATIVE (0200)
+
+/* This operand is an absolute branch address. The disassembler
+ prints these symbolically if possible. */
+#define PPC_OPERAND_ABSOLUTE (0400)
+
+/* This operand is optional, and is zero if omitted. This is used for
+ the optional BF and L fields in the comparison instructions. The
+ assembler must count the number of operands remaining on the line,
+ and the number of operands remaining for the opcode, and decide
+ whether this operand is present or not. The disassembler should
+ print this operand out only if it is not zero. */
+#define PPC_OPERAND_OPTIONAL (01000)
+
+/* This flag is only used with PPC_OPERAND_OPTIONAL. If this operand
+ is omitted, then for the next operand use this operand value plus
+ 1, ignoring the next operand field for the opcode. This wretched
+ hack is needed because the Power rotate instructions can take
+ either 4 or 5 operands. The disassembler should print this operand
+ out regardless of the PPC_OPERAND_OPTIONAL field. */
+#define PPC_OPERAND_NEXT (02000)
+
+/* This operand should be regarded as a negative number for the
+ purposes of overflow checking (i.e., the normal most negative
+ number is disallowed and one more than the normal most positive
+ number is allowed). This flag will only be set for a signed
+ operand. */
+#define PPC_OPERAND_NEGATIVE (04000)
+
+/* This operand names a vector unit register. The disassembler
+ prints these with a leading 'v'. */
+#define PPC_OPERAND_VR (010000)
+
+/* This operand is for the DS field in a DS form instruction. */
+#define PPC_OPERAND_DS (020000)
+
+/* This operand is for the DQ field in a DQ form instruction. */
+#define PPC_OPERAND_DQ (040000)
+
+/* 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. */
+ unsigned long 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;
+
+#endif /* PPC_H */