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Diffstat (limited to 'include/opcode/rx.h')
| -rw-r--r-- | include/opcode/rx.h | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/include/opcode/rx.h b/include/opcode/rx.h new file mode 100644 index 0000000..7081ccc --- /dev/null +++ b/include/opcode/rx.h @@ -0,0 +1,218 @@ +/* Opcode decoder for the Renesas RX + Copyright 2008, 2009 + Free Software Foundation, Inc. + Written by DJ Delorie <dj@redhat.com> + + This file is part of GDB, the GNU Debugger and GAS, the GNU Assembler. + + This program 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 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it 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, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA + 02110-1301, USA. */ + +/* The RX decoder in libopcodes is used by the simulator, gdb's + analyzer, and the disassembler. Given an opcode data source, + it decodes the next opcode into the following structures. */ + +typedef enum +{ + RX_AnySize = 0, + RX_Byte, /* undefined extension */ + RX_UByte, + RX_SByte, + RX_Word, /* undefined extension */ + RX_UWord, + RX_SWord, + RX_3Byte, + RX_Long, +} RX_Size; + +typedef enum +{ + RX_Operand_None, + RX_Operand_Immediate, /* #addend */ + RX_Operand_Register, /* Rn */ + RX_Operand_Indirect, /* [Rn + addend] */ + RX_Operand_Postinc, /* [Rn+] */ + RX_Operand_Predec, /* [-Rn] */ + RX_Operand_Condition, /* eq, gtu, etc */ + RX_Operand_Flag, /* [UIOSZC] */ +} RX_Operand_Type; + +typedef enum +{ + RXO_unknown, + RXO_mov, /* d = s (signed) */ + RXO_movbi, /* d = [s,s2] (signed) */ + RXO_movbir, /* [s,s2] = d (signed) */ + RXO_pushm, /* s..s2 */ + RXO_popm, /* s..s2 */ + RXO_pusha, /* &s */ + RXO_xchg, /* s <-> d */ + RXO_stcc, /* d = s if cond(s2) */ + RXO_rtsd, /* rtsd, 1=imm, 2-0 = reg if reg type */ + + /* These are all either d OP= s or, if s2 is set, d = s OP s2. Note + that d may be "None". */ + RXO_and, + RXO_or, + RXO_xor, + RXO_add, + RXO_sub, + RXO_mul, + RXO_div, + RXO_divu, + RXO_shll, + RXO_shar, + RXO_shlr, + + RXO_adc, /* d = d + s + carry */ + RXO_sbb, /* d = d - s - ~carry */ + RXO_abs, /* d = |s| */ + RXO_max, /* d = max(d,s) */ + RXO_min, /* d = min(d,s) */ + RXO_emul, /* d:64 = d:32 * s */ + RXO_emulu, /* d:64 = d:32 * s (unsigned) */ + RXO_ediv, /* d:64 / s; d = quot, d+1 = rem */ + RXO_edivu, /* d:64 / s; d = quot, d+1 = rem */ + + RXO_rolc, /* d <<= 1 through carry */ + RXO_rorc, /* d >>= 1 through carry*/ + RXO_rotl, /* d <<= #s without carry */ + RXO_rotr, /* d >>= #s without carry*/ + RXO_revw, /* d = revw(s) */ + RXO_revl, /* d = revl(s) */ + RXO_branch, /* pc = d if cond(s) */ + RXO_branchrel,/* pc += d if cond(s) */ + RXO_jsr, /* pc = d */ + RXO_jsrrel, /* pc += d */ + RXO_rts, + RXO_nop, + + RXO_scmpu, + RXO_smovu, + RXO_smovb, + RXO_suntil, + RXO_swhile, + RXO_smovf, + RXO_sstr, + + RXO_rmpa, + RXO_mulhi, + RXO_mullo, + RXO_machi, + RXO_maclo, + RXO_mvtachi, + RXO_mvtaclo, + RXO_mvfachi, + RXO_mvfacmi, + RXO_mvfaclo, + RXO_racw, + + RXO_sat, /* sat(d) */ + RXO_satr, + + RXO_fadd, /* d op= s */ + RXO_fcmp, + RXO_fsub, + RXO_ftoi, + RXO_fmul, + RXO_fdiv, + RXO_round, + RXO_itof, + + RXO_bset, /* d |= (1<<s) */ + RXO_bclr, /* d &= ~(1<<s) */ + RXO_btst, /* s & (1<<s2) */ + RXO_bnot, /* d ^= (1<<s) */ + RXO_bmcc, /* d<s> = cond(s2) */ + + RXO_clrpsw, /* flag index in d */ + RXO_setpsw, /* flag index in d */ + + RXO_mvtcp, /* cop# in s2, cop[d] = s */ + RXO_mvfcp, /* cop# in s2, d = cop[s] */ + RXO_opecp, /* cop# in s2, do cop[s] */ + + RXO_rtfi, + RXO_rte, + RXO_rtd, /* undocumented */ + RXO_brk, + RXO_dbt, /* undocumented */ + RXO_int, /* vector id in s */ + RXO_stop, + RXO_wait, + + RXO_sccnd, /* d = cond(s) ? 1 : 0 */ +} RX_Opcode_ID; + +/* Condition bitpatterns, as registers. */ +#define RXC_eq 0 +#define RXC_z 0 +#define RXC_ne 1 +#define RXC_nz 1 +#define RXC_c 2 +#define RXC_nc 3 +#define RXC_gtu 4 +#define RXC_leu 5 +#define RXC_pz 6 +#define RXC_n 7 +#define RXC_ge 8 +#define RXC_lt 9 +#define RXC_gt 10 +#define RXC_le 11 +#define RXC_o 12 +#define RXC_no 13 +#define RXC_always 14 +#define RXC_never 15 + +typedef struct +{ + RX_Operand_Type type; + int reg; + int addend; + RX_Size size; +} RX_Opcode_Operand; + +typedef struct +{ + RX_Opcode_ID id; + int n_bytes; + int prefix; + char * syntax; + RX_Size size; + /* By convention, these are destination, source1, source2. */ + RX_Opcode_Operand op[3]; + + /* The logic here is: + newflags = (oldflags & ~(int)flags_0) | flags_1 | (op_flags & flags_s) + Only the O, S, Z, and C flags are affected. */ + char flags_0; /* This also clears out flags-to-be-set. */ + char flags_1; + char flags_s; +} RX_Opcode_Decoded; + +/* Within the syntax, %c-style format specifiers are as follows: + + %% = '%' character + %0 = operand[0] (destination) + %1 = operand[1] (source) + %2 = operand[2] (2nd source) + %s = operation size (b/w/l) + %SN = operand size [N] (N=0,1,2) + %aN = op[N] as an address (N=0,1,2) + + Register numbers 0..15 are general registers. 16..31 are control + registers. 32..47 are condition codes. */ + +int rx_decode_opcode (unsigned long, RX_Opcode_Decoded *, int (*)(void *), void *); |