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Diffstat (limited to 'qemu/target-cris/opcode-cris.h')
| -rw-r--r-- | qemu/target-cris/opcode-cris.h | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/qemu/target-cris/opcode-cris.h b/qemu/target-cris/opcode-cris.h new file mode 100644 index 000000000..e7ebb98cd --- /dev/null +++ b/qemu/target-cris/opcode-cris.h @@ -0,0 +1,355 @@ +/* cris.h -- Header file for CRIS opcode and register tables. + Copyright (C) 2000, 2001, 2004 Free Software Foundation, Inc. + Contributed by Axis Communications AB, Lund, Sweden. + Originally written for GAS 1.38.1 by Mikael Asker. + Updated, BFDized and GNUified by Hans-Peter Nilsson. + +This file is part of GAS, GDB and the GNU binutils. + +GAS, GDB, and GNU binutils is free software; you can redistribute it +and/or modify it 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. + +GAS, GDB, and 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 program; if not, see <http://www.gnu.org/licenses/>. */ + +#ifndef __CRIS_H_INCLUDED_ +#define __CRIS_H_INCLUDED_ + +#if !defined(__STDC__) && !defined(const) +#define const +#endif + + +/* Registers. */ +#define MAX_REG (15) +#define CRIS_REG_SP (14) +#define CRIS_REG_PC (15) + +/* CPU version control of disassembly and assembly of instructions. + May affect how the instruction is assembled, at least the size of + immediate operands. */ +enum cris_insn_version_usage +{ + /* Any version. */ + cris_ver_version_all=0, + + /* Indeterminate (intended for disassembly only, or obsolete). */ + cris_ver_warning, + + /* Only for v0..3 (Etrax 1..4). */ + cris_ver_v0_3, + + /* Only for v3 or higher (ETRAX 4 and beyond). */ + cris_ver_v3p, + + /* Only for v8 (Etrax 100). */ + cris_ver_v8, + + /* Only for v8 or higher (ETRAX 100, ETRAX 100 LX). */ + cris_ver_v8p, + + /* Only for v0..10. FIXME: Not sure what to do with this. */ + cris_ver_sim_v0_10, + + /* Only for v0..10. */ + cris_ver_v0_10, + + /* Only for v3..10. (ETRAX 4, ETRAX 100 and ETRAX 100 LX). */ + cris_ver_v3_10, + + /* Only for v8..10 (ETRAX 100 and ETRAX 100 LX). */ + cris_ver_v8_10, + + /* Only for v10 (ETRAX 100 LX) and same series. */ + cris_ver_v10, + + /* Only for v10 (ETRAX 100 LX) and same series. */ + cris_ver_v10p, + + /* Only for v32 or higher (codename GUINNESS). + Of course some or all these of may change to cris_ver_v32p if/when + there's a new revision. */ + cris_ver_v32p +}; + + +/* Special registers. */ +struct cris_spec_reg +{ + const char *const name; + unsigned int number; + + /* The size of the register. */ + unsigned int reg_size; + + /* What CPU version the special register of that name is implemented + in. If cris_ver_warning, emit an unimplemented-warning. */ + enum cris_insn_version_usage applicable_version; + + /* There might be a specific warning for using a special register + here. */ + const char *const warning; +}; +extern const struct cris_spec_reg cris_spec_regs[]; + + +/* Support registers (kind of special too, but not named as such). */ +struct cris_support_reg +{ + const char *const name; + unsigned int number; +}; +extern const struct cris_support_reg cris_support_regs[]; + +/* Opcode-dependent constants. */ +#define AUTOINCR_BIT (0x04) + +/* Prefixes. */ +#define BDAP_QUICK_OPCODE (0x0100) +#define BDAP_QUICK_Z_BITS (0x0e00) + +#define BIAP_OPCODE (0x0540) +#define BIAP_Z_BITS (0x0a80) + +#define DIP_OPCODE (0x0970) +#define DIP_Z_BITS (0xf280) + +#define BDAP_INDIR_LOW (0x40) +#define BDAP_INDIR_LOW_Z (0x80) +#define BDAP_INDIR_HIGH (0x09) +#define BDAP_INDIR_HIGH_Z (0x02) + +#define BDAP_INDIR_OPCODE (BDAP_INDIR_HIGH * 0x0100 + BDAP_INDIR_LOW) +#define BDAP_INDIR_Z_BITS (BDAP_INDIR_HIGH_Z * 0x100 + BDAP_INDIR_LOW_Z) +#define BDAP_PC_LOW (BDAP_INDIR_LOW + CRIS_REG_PC) +#define BDAP_INCR_HIGH (BDAP_INDIR_HIGH + AUTOINCR_BIT) + +/* No prefix must have this code for its "match" bits in the + opcode-table. "BCC .+2" will do nicely. */ +#define NO_CRIS_PREFIX 0 + +/* Definitions for condition codes. */ +#define CC_CC 0x0 +#define CC_HS 0x0 +#define CC_CS 0x1 +#define CC_LO 0x1 +#define CC_NE 0x2 +#define CC_EQ 0x3 +#define CC_VC 0x4 +#define CC_VS 0x5 +#define CC_PL 0x6 +#define CC_MI 0x7 +#define CC_LS 0x8 +#define CC_HI 0x9 +#define CC_GE 0xA +#define CC_LT 0xB +#define CC_GT 0xC +#define CC_LE 0xD +#define CC_A 0xE +#define CC_EXT 0xF + +/* A table of strings "cc", "cs"... indexed with condition code + values as above. */ +extern const char *const cris_cc_strings[]; + +/* Bcc quick. */ +#define BRANCH_QUICK_LOW (0) +#define BRANCH_QUICK_HIGH (0) +#define BRANCH_QUICK_OPCODE (BRANCH_QUICK_HIGH * 0x0100 + BRANCH_QUICK_LOW) +#define BRANCH_QUICK_Z_BITS (0x0F00) + +/* BA quick. */ +#define BA_QUICK_HIGH (BRANCH_QUICK_HIGH + CC_A * 0x10) +#define BA_QUICK_OPCODE (BA_QUICK_HIGH * 0x100 + BRANCH_QUICK_LOW) + +/* Bcc [PC+]. */ +#define BRANCH_PC_LOW (0xFF) +#define BRANCH_INCR_HIGH (0x0D) +#define BA_PC_INCR_OPCODE \ + ((BRANCH_INCR_HIGH + CC_A * 0x10) * 0x0100 + BRANCH_PC_LOW) + +/* Jump. */ +/* Note that old versions generated special register 8 (in high bits) + and not-that-old versions recognized it as a jump-instruction. + That opcode now belongs to JUMPU. */ +#define JUMP_INDIR_OPCODE (0x0930) +#define JUMP_INDIR_Z_BITS (0xf2c0) +#define JUMP_PC_INCR_OPCODE \ + (JUMP_INDIR_OPCODE + AUTOINCR_BIT * 0x0100 + CRIS_REG_PC) + +#define MOVE_M_TO_PREG_OPCODE 0x0a30 +#define MOVE_M_TO_PREG_ZBITS 0x01c0 + +/* BDAP.D N,PC. */ +#define MOVE_PC_INCR_OPCODE_PREFIX \ + (((BDAP_INCR_HIGH | (CRIS_REG_PC << 4)) << 8) | BDAP_PC_LOW | (2 << 4)) +#define MOVE_PC_INCR_OPCODE_SUFFIX \ + (MOVE_M_TO_PREG_OPCODE | CRIS_REG_PC | (AUTOINCR_BIT << 8)) + +#define JUMP_PC_INCR_OPCODE_V32 (0x0DBF) + +/* BA DWORD (V32). */ +#define BA_DWORD_OPCODE (0x0EBF) + +/* Nop. */ +#define NOP_OPCODE (0x050F) +#define NOP_Z_BITS (0xFFFF ^ NOP_OPCODE) + +#define NOP_OPCODE_V32 (0x05B0) +#define NOP_Z_BITS_V32 (0xFFFF ^ NOP_OPCODE_V32) + +/* For the compatibility mode, let's use "MOVE R0,P0". Doesn't affect + registers or flags. Unfortunately shuts off interrupts for one cycle + for < v32, but there doesn't seem to be any alternative without that + effect. */ +#define NOP_OPCODE_COMMON (0x630) +#define NOP_OPCODE_ZBITS_COMMON (0xffff & ~NOP_OPCODE_COMMON) + +/* LAPC.D */ +#define LAPC_DWORD_OPCODE (0x0D7F) +#define LAPC_DWORD_Z_BITS (0x0fff & ~LAPC_DWORD_OPCODE) + +/* Structure of an opcode table entry. */ +enum cris_imm_oprnd_size_type +{ + /* No size is applicable. */ + SIZE_NONE, + + /* Always 32 bits. */ + SIZE_FIX_32, + + /* Indicated by size of special register. */ + SIZE_SPEC_REG, + + /* Indicated by size field, signed. */ + SIZE_FIELD_SIGNED, + + /* Indicated by size field, unsigned. */ + SIZE_FIELD_UNSIGNED, + + /* Indicated by size field, no sign implied. */ + SIZE_FIELD +}; + +/* For GDB. FIXME: Is this the best way to handle opcode + interpretation? */ +enum cris_op_type +{ + cris_not_implemented_op = 0, + cris_abs_op, + cris_addi_op, + cris_asr_op, + cris_asrq_op, + cris_ax_ei_setf_op, + cris_bdap_prefix, + cris_biap_prefix, + cris_break_op, + cris_btst_nop_op, + cris_clearf_di_op, + cris_dip_prefix, + cris_dstep_logshift_mstep_neg_not_op, + cris_eight_bit_offset_branch_op, + cris_move_mem_to_reg_movem_op, + cris_move_reg_to_mem_movem_op, + cris_move_to_preg_op, + cris_muls_op, + cris_mulu_op, + cris_none_reg_mode_add_sub_cmp_and_or_move_op, + cris_none_reg_mode_clear_test_op, + cris_none_reg_mode_jump_op, + cris_none_reg_mode_move_from_preg_op, + cris_quick_mode_add_sub_op, + cris_quick_mode_and_cmp_move_or_op, + cris_quick_mode_bdap_prefix, + cris_reg_mode_add_sub_cmp_and_or_move_op, + cris_reg_mode_clear_op, + cris_reg_mode_jump_op, + cris_reg_mode_move_from_preg_op, + cris_reg_mode_test_op, + cris_scc_op, + cris_sixteen_bit_offset_branch_op, + cris_three_operand_add_sub_cmp_and_or_op, + cris_three_operand_bound_op, + cris_two_operand_bound_op, + cris_xor_op +}; + +struct cris_opcode +{ + /* The name of the insn. */ + const char *name; + + /* Bits that must be 1 for a match. */ + unsigned int match; + + /* Bits that must be 0 for a match. */ + unsigned int lose; + + /* See the table in "opcodes/cris-opc.c". */ + const char *args; + + /* Nonzero if this is a delayed branch instruction. */ + char delayed; + + /* Size of immediate operands. */ + enum cris_imm_oprnd_size_type imm_oprnd_size; + + /* Indicates which version this insn was first implemented in. */ + enum cris_insn_version_usage applicable_version; + + /* What kind of operation this is. */ + enum cris_op_type op; +}; +extern const struct cris_opcode cris_opcodes[]; + + +/* These macros are for the target-specific flags in disassemble_info + used at disassembly. */ + +/* This insn accesses memory. This flag is more trustworthy than + checking insn_type for "dis_dref" which does not work for + e.g. "JSR [foo]". */ +#define CRIS_DIS_FLAG_MEMREF (1 << 0) + +/* The "target" field holds a register number. */ +#define CRIS_DIS_FLAG_MEM_TARGET_IS_REG (1 << 1) + +/* The "target2" field holds a register number; add it to "target". */ +#define CRIS_DIS_FLAG_MEM_TARGET2_IS_REG (1 << 2) + +/* Yet another add-on: the register in "target2" must be multiplied + by 2 before adding to "target". */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MULT2 (1 << 3) + +/* Yet another add-on: the register in "target2" must be multiplied + by 4 (mutually exclusive with .._MULT2). */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MULT4 (1 << 4) + +/* The register in "target2" is an indirect memory reference (of the + register there), add to "target". Assumed size is dword (mutually + exclusive with .._MULT[24]). */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MEM (1 << 5) + +/* Add-on to CRIS_DIS_FLAG_MEM_TARGET2_MEM; the memory access is "byte"; + sign-extended before adding to "target". */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MEM_BYTE (1 << 6) + +/* Add-on to CRIS_DIS_FLAG_MEM_TARGET2_MEM; the memory access is "word"; + sign-extended before adding to "target". */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MEM_WORD (1 << 7) + +#endif /* __CRIS_H_INCLUDED_ */ + +/* + * Local variables: + * eval: (c-set-style "gnu") + * indent-tabs-mode: t + * End: + */ |