aboutsummaryrefslogtreecommitdiff
path: root/include/opcode/m68k.h
diff options
context:
space:
mode:
authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
commit252b5132c753830d5fd56823373aed85f2a0db63 (patch)
tree1af963bfd8d3e55167b81def4207f175eaff3a56 /include/opcode/m68k.h
downloadgdb-252b5132c753830d5fd56823373aed85f2a0db63.zip
gdb-252b5132c753830d5fd56823373aed85f2a0db63.tar.gz
gdb-252b5132c753830d5fd56823373aed85f2a0db63.tar.bz2
19990502 sourceware importbinu_ss_19990502
Diffstat (limited to 'include/opcode/m68k.h')
-rw-r--r--include/opcode/m68k.h315
1 files changed, 315 insertions, 0 deletions
diff --git a/include/opcode/m68k.h b/include/opcode/m68k.h
new file mode 100644
index 0000000..ecb3f95
--- /dev/null
+++ b/include/opcode/m68k.h
@@ -0,0 +1,315 @@
+/* Opcode table header for m680[01234]0/m6888[12]/m68851.
+ Copyright 1989, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation.
+
+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. */
+
+/* These are used as bit flags for the arch field in the m68k_opcode
+ structure. */
+#define _m68k_undef 0
+#define m68000 0x001
+#define m68008 m68000 /* synonym for -m68000. otherwise unused. */
+#define m68010 0x002
+#define m68020 0x004
+#define m68030 0x008
+#define m68ec030 m68030 /* similar enough to -m68030 to ignore differences;
+ gas will deal with the few differences. */
+#define m68040 0x010
+/* there is no 68050 */
+#define m68060 0x020
+#define m68881 0x040
+#define m68882 m68881 /* synonym for -m68881. otherwise unused. */
+#define m68851 0x080
+#define cpu32 0x100 /* e.g., 68332 */
+#define mcf5200 0x200
+
+ /* handy aliases */
+#define m68040up (m68040 | m68060)
+#define m68030up (m68030 | m68040up)
+#define m68020up (m68020 | m68030up)
+#define m68010up (m68010 | cpu32 | m68020up)
+#define m68000up (m68000 | m68010up)
+
+#define mfloat (m68881 | m68882 | m68040 | m68060)
+#define mmmu (m68851 | m68030 | m68040 | m68060)
+
+/* The structure used to hold information for an opcode. */
+
+struct m68k_opcode
+{
+ /* The opcode name. */
+ const char *name;
+ /* The opcode itself. */
+ unsigned long opcode;
+ /* The mask used by the disassembler. */
+ unsigned long match;
+ /* The arguments. */
+ const char *args;
+ /* The architectures which support this opcode. */
+ unsigned int arch;
+};
+
+/* The structure used to hold information for an opcode alias. */
+
+struct m68k_opcode_alias
+{
+ /* The alias name. */
+ const char *alias;
+ /* The instruction for which this is an alias. */
+ const char *primary;
+};
+
+/* We store four bytes of opcode for all opcodes because that is the
+ most any of them need. The actual length of an instruction is
+ always at least 2 bytes, and is as much longer as necessary to hold
+ the operands it has.
+
+ The match field is a mask saying which bits must match particular
+ opcode in order for an instruction to be an instance of that
+ opcode.
+
+ The args field is a string containing two characters for each
+ operand of the instruction. The first specifies the kind of
+ operand; the second, the place it is stored. */
+
+/* Kinds of operands:
+ Characters used: AaBCcDdFfIJkLlMmnOopQqRrSsTtUVvWXYZ0123|*~%;@!&$?/<>#^+-
+
+ D data register only. Stored as 3 bits.
+ A address register only. Stored as 3 bits.
+ a address register indirect only. Stored as 3 bits.
+ R either kind of register. Stored as 4 bits.
+ r either kind of register indirect only. Stored as 4 bits.
+ At the moment, used only for cas2 instruction.
+ F floating point coprocessor register only. Stored as 3 bits.
+ O an offset (or width): immediate data 0-31 or data register.
+ Stored as 6 bits in special format for BF... insns.
+ + autoincrement only. Stored as 3 bits (number of the address register).
+ - autodecrement only. Stored as 3 bits (number of the address register).
+ Q quick immediate data. Stored as 3 bits.
+ This matches an immediate operand only when value is in range 1 .. 8.
+ M moveq immediate data. Stored as 8 bits.
+ This matches an immediate operand only when value is in range -128..127
+ T trap vector immediate data. Stored as 4 bits.
+
+ k K-factor for fmove.p instruction. Stored as a 7-bit constant or
+ a three bit register offset, depending on the field type.
+
+ # immediate data. Stored in special places (b, w or l)
+ which say how many bits to store.
+ ^ immediate data for floating point instructions. Special places
+ are offset by 2 bytes from '#'...
+ B pc-relative address, converted to an offset
+ that is treated as immediate data.
+ d displacement and register. Stores the register as 3 bits
+ and stores the displacement in the entire second word.
+
+ C the CCR. No need to store it; this is just for filtering validity.
+ S the SR. No need to store, just as with CCR.
+ U the USP. No need to store, just as with CCR.
+
+ I Coprocessor ID. Not printed if 1. The Coprocessor ID is always
+ extracted from the 'd' field of word one, which means that an extended
+ coprocessor opcode can be skipped using the 'i' place, if needed.
+
+ s System Control register for the floating point coprocessor.
+
+ J Misc register for movec instruction, stored in 'j' format.
+ Possible values:
+ 0x000 SFC Source Function Code reg [60, 40, 30, 20, 10]
+ 0x001 DFC Data Function Code reg [60, 40, 30, 20, 10]
+ 0x002 CACR Cache Control Register [60, 40, 30, 20]
+ 0x003 TC MMU Translation Control [60, 40]
+ 0x004 ITT0 Instruction Transparent
+ Translation reg 0 [60, 40]
+ 0x005 ITT1 Instruction Transparent
+ Translation reg 1 [60, 40]
+ 0x006 DTT0 Data Transparent
+ Translation reg 0 [60, 40]
+ 0x007 DTT1 Data Transparent
+ Translation reg 1 [60, 40]
+ 0x008 BUSCR Bus Control Register [60]
+ 0x800 USP User Stack Pointer [60, 40, 30, 20, 10]
+ 0x801 VBR Vector Base reg [60, 40, 30, 20, 10]
+ 0x802 CAAR Cache Address Register [ 30, 20]
+ 0x803 MSP Master Stack Pointer [ 40, 30, 20]
+ 0x804 ISP Interrupt Stack Pointer [ 40, 30, 20]
+ 0x805 MMUSR MMU Status reg [ 40]
+ 0x806 URP User Root Pointer [60, 40]
+ 0x807 SRP Supervisor Root Pointer [60, 40]
+ 0x808 PCR Processor Configuration reg [60]
+ 0xC00 ROMBAR ROM Base Address Register [520X]
+ 0xC04 RAMBAR0 RAM Base Address Register 0 [520X]
+ 0xC05 RAMBAR1 RAM Base Address Register 0 [520X]
+ 0xC0F MBAR0 RAM Base Address Register 0 [520X]
+
+ L Register list of the type d0-d7/a0-a7 etc.
+ (New! Improved! Can also hold fp0-fp7, as well!)
+ The assembler tries to see if the registers match the insn by
+ looking at where the insn wants them stored.
+
+ l Register list like L, but with all the bits reversed.
+ Used for going the other way. . .
+
+ c cache identifier which may be "nc" for no cache, "ic"
+ for instruction cache, "dc" for data cache, or "bc"
+ for both caches. Used in cinv and cpush. Always
+ stored in position "d".
+
+ The remainder are all stored as 6 bits using an address mode and a
+ register number; they differ in which addressing modes they match.
+
+ * all (modes 0-6,7.0-4)
+ ~ alterable memory (modes 2-6,7.0,7.1)
+ (not 0,1,7.2-4)
+ % alterable (modes 0-6,7.0,7.1)
+ (not 7.2-4)
+ ; data (modes 0,2-6,7.0-4)
+ (not 1)
+ @ data, but not immediate (modes 0,2-6,7.0-3)
+ (not 1,7.4)
+ ! control (modes 2,5,6,7.0-3)
+ (not 0,1,3,4,7.4)
+ & alterable control (modes 2,5,6,7.0,7.1)
+ (not 0,1,7.2-4)
+ $ alterable data (modes 0,2-6,7.0,7.1)
+ (not 1,7.2-4)
+ ? alterable control, or data register (modes 0,2,5,6,7.0,7.1)
+ (not 1,3,4,7.2-4)
+ / control, or data register (modes 0,2,5,6,7.0-3)
+ (not 1,3,4,7.4)
+ > *save operands (modes 2,4,5,6,7.0,7.1)
+ (not 0,1,3,7.2-4)
+ < *restore operands (modes 2,3,5,6,7.0-3)
+ (not 0,1,4,7.4)
+
+ coldfire move operands:
+ m (modes 0-4)
+ n (modes 5,7.2)
+ o (modes 6,7.0,7.1,7.3,7.4)
+ p (modes 0-5)
+
+ coldfire bset/bclr/btst/mulsl/mulul operands:
+ q (modes 0,2-5)
+ v (modes 0,2-5,7.0,7.1)
+*/
+
+/* For the 68851: */
+/*
+ I didn't use much imagination in choosing the
+ following codes, so many of them aren't very
+ mnemonic. -rab
+
+ 0 32 bit pmmu register
+ Possible values:
+ 000 TC Translation Control Register (68030, 68851)
+
+ 1 16 bit pmmu register
+ 111 AC Access Control (68851)
+
+ 2 8 bit pmmu register
+ 100 CAL Current Access Level (68851)
+ 101 VAL Validate Access Level (68851)
+ 110 SCC Stack Change Control (68851)
+
+ 3 68030-only pmmu registers (32 bit)
+ 010 TT0 Transparent Translation reg 0
+ (aka Access Control reg 0 -- AC0 -- on 68ec030)
+ 011 TT1 Transparent Translation reg 1
+ (aka Access Control reg 1 -- AC1 -- on 68ec030)
+
+ W wide pmmu registers
+ Possible values:
+ 001 DRP Dma Root Pointer (68851)
+ 010 SRP Supervisor Root Pointer (68030, 68851)
+ 011 CRP Cpu Root Pointer (68030, 68851)
+
+ f function code register (68030, 68851)
+ 0 SFC
+ 1 DFC
+
+ V VAL register only (68851)
+
+ X BADx, BACx (16 bit)
+ 100 BAD Breakpoint Acknowledge Data (68851)
+ 101 BAC Breakpoint Acknowledge Control (68851)
+
+ Y PSR (68851) (MMUSR on 68030) (ACUSR on 68ec030)
+ Z PCSR (68851)
+
+ | memory (modes 2-6, 7.*)
+
+ t address test level (68030 only)
+ Stored as 3 bits, range 0-7.
+ Also used for breakpoint instruction now.
+
+*/
+
+/* Places to put an operand, for non-general operands:
+ s source, low bits of first word.
+ d dest, shifted 9 in first word
+ 1 second word, shifted 12
+ 2 second word, shifted 6
+ 3 second word, shifted 0
+ 4 third word, shifted 12
+ 5 third word, shifted 6
+ 6 third word, shifted 0
+ 7 second word, shifted 7
+ 8 second word, shifted 10
+ 9 second word, shifted 5
+ D store in both place 1 and place 3; for divul and divsl.
+ B first word, low byte, for branch displacements
+ W second word (entire), for branch displacements
+ L second and third words (entire), for branch displacements
+ (also overloaded for move16)
+ b second word, low byte
+ w second word (entire) [variable word/long branch offset for dbra]
+ W second word (entire) (must be signed 16 bit value)
+ l second and third word (entire)
+ g variable branch offset for bra and similar instructions.
+ The place to store depends on the magnitude of offset.
+ t store in both place 7 and place 8; for floating point operations
+ c branch offset for cpBcc operations.
+ The place to store is word two if bit six of word one is zero,
+ and words two and three if bit six of word one is one.
+ i Increment by two, to skip over coprocessor extended operands. Only
+ works with the 'I' format.
+ k Dynamic K-factor field. Bits 6-4 of word 2, used as a register number.
+ Also used for dynamic fmovem instruction.
+ C floating point coprocessor constant - 7 bits. Also used for static
+ K-factors...
+ j Movec register #, stored in 12 low bits of second word.
+
+ Places to put operand, for general operands:
+ d destination, shifted 6 bits in first word
+ b source, at low bit of first word, and immediate uses one byte
+ w source, at low bit of first word, and immediate uses two bytes
+ l source, at low bit of first word, and immediate uses four bytes
+ s source, at low bit of first word.
+ Used sometimes in contexts where immediate is not allowed anyway.
+ f single precision float, low bit of 1st word, immediate uses 4 bytes
+ F double precision float, low bit of 1st word, immediate uses 8 bytes
+ x extended precision float, low bit of 1st word, immediate uses 12 bytes
+ p packed float, low bit of 1st word, immediate uses 12 bytes
+*/
+
+extern const struct m68k_opcode m68k_opcodes[];
+extern const struct m68k_opcode_alias m68k_opcode_aliases[];
+
+extern const int m68k_numopcodes, m68k_numaliases;
+
+/* end of m68k-opcode.h */