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7a23d8a826
There are some OpenRISC CPUs that have their binaries stored in
little-endian format. Using objdump to disassemble these is
problematic, as some instructions fail to disassemble, for example:
objdump -D -b binary -EB -m or1k test_be.bin
0: 18 60 07 27 l.movhi r3,0x727
4: a8 63 0e 00 l.ori r3,r3,0xe00
8: 9c 63 ff ff l.addi r3,r3,-1
c: bc 43 00 00 l.sfgtui r3,0
10: 13 ff ff fe l.bf 0x8
14: 44 00 48 00 l.jr r9
objdump -D -b binary -EL -m or1k test_le.bin
0: 27 07 60 18 *unknown*
4: 00 0e 63 a8 l.ori r3,r3,0xe00
8: ff ff 63 9c *unknown*
c: 00 00 43 bc l.sfgtui r3,0
10: fe ff ff 13 *unknown*
14: 00 48 00 44 l.jr r9
It was found that the hash function was using the still little-endian
buffer to extract the opcode used for the hash lookup. This didn't work
as it was pulling the wrong hashcode causing instruction lookup to fail.
Fix the hash function by using the normalized/byte-swapped value instead
of the buffer.
Signed-off-by: Stafford Horne <shorne@gmail.com>
163 lines
5.5 KiB
C
163 lines
5.5 KiB
C
/* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */
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/* Instruction opcode header for or1k.
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THIS FILE IS MACHINE GENERATED WITH CGEN.
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Copyright (C) 1996-2025 Free Software Foundation, Inc.
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This file is part of the GNU Binutils and/or GDB, the GNU debugger.
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This file is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef OR1K_OPC_H
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#define OR1K_OPC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* -- opc.h */
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#undef CGEN_DIS_HASH_SIZE
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#define CGEN_DIS_HASH_SIZE 256
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#undef CGEN_DIS_HASH
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#define CGEN_DIS_HASH(buffer, value) ((value >> 26) & 0xff)
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/* Check applicability of instructions against machines. */
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#define CGEN_VALIDATE_INSN_SUPPORTED
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extern int or1k_cgen_insn_supported (CGEN_CPU_DESC, const CGEN_INSN *);
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/* -- */
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/* Enum declaration for or1k instruction types. */
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typedef enum cgen_insn_type {
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OR1K_INSN_INVALID, OR1K_INSN_L_J, OR1K_INSN_L_ADRP, OR1K_INSN_L_JAL
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, OR1K_INSN_L_JR, OR1K_INSN_L_JALR, OR1K_INSN_L_BNF, OR1K_INSN_L_BF
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, OR1K_INSN_L_TRAP, OR1K_INSN_L_SYS, OR1K_INSN_L_MSYNC, OR1K_INSN_L_PSYNC
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, OR1K_INSN_L_CSYNC, OR1K_INSN_L_RFE, OR1K_INSN_L_NOP_IMM, OR1K_INSN_L_NOP
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, OR1K_INSN_L_MOVHI, OR1K_INSN_L_MACRC, OR1K_INSN_L_MFSPR, OR1K_INSN_L_MTSPR
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, OR1K_INSN_L_LWZ, OR1K_INSN_L_LWS, OR1K_INSN_L_LWA, OR1K_INSN_L_LBZ
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, OR1K_INSN_L_LBS, OR1K_INSN_L_LHZ, OR1K_INSN_L_LHS, OR1K_INSN_L_SW
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, OR1K_INSN_L_SB, OR1K_INSN_L_SH, OR1K_INSN_L_SWA, OR1K_INSN_L_SLL
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, OR1K_INSN_L_SLLI, OR1K_INSN_L_SRL, OR1K_INSN_L_SRLI, OR1K_INSN_L_SRA
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, OR1K_INSN_L_SRAI, OR1K_INSN_L_ROR, OR1K_INSN_L_RORI, OR1K_INSN_L_AND
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, OR1K_INSN_L_OR, OR1K_INSN_L_XOR, OR1K_INSN_L_ADD, OR1K_INSN_L_SUB
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, OR1K_INSN_L_ADDC, OR1K_INSN_L_MUL, OR1K_INSN_L_MULD, OR1K_INSN_L_MULU
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, OR1K_INSN_L_MULDU, OR1K_INSN_L_DIV, OR1K_INSN_L_DIVU, OR1K_INSN_L_FF1
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, OR1K_INSN_L_FL1, OR1K_INSN_L_ANDI, OR1K_INSN_L_ORI, OR1K_INSN_L_XORI
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, OR1K_INSN_L_ADDI, OR1K_INSN_L_ADDIC, OR1K_INSN_L_MULI, OR1K_INSN_L_EXTHS
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, OR1K_INSN_L_EXTBS, OR1K_INSN_L_EXTHZ, OR1K_INSN_L_EXTBZ, OR1K_INSN_L_EXTWS
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, OR1K_INSN_L_EXTWZ, OR1K_INSN_L_CMOV, OR1K_INSN_L_SFGTS, OR1K_INSN_L_SFGTSI
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, OR1K_INSN_L_SFGTU, OR1K_INSN_L_SFGTUI, OR1K_INSN_L_SFGES, OR1K_INSN_L_SFGESI
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, OR1K_INSN_L_SFGEU, OR1K_INSN_L_SFGEUI, OR1K_INSN_L_SFLTS, OR1K_INSN_L_SFLTSI
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, OR1K_INSN_L_SFLTU, OR1K_INSN_L_SFLTUI, OR1K_INSN_L_SFLES, OR1K_INSN_L_SFLESI
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, OR1K_INSN_L_SFLEU, OR1K_INSN_L_SFLEUI, OR1K_INSN_L_SFEQ, OR1K_INSN_L_SFEQI
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, OR1K_INSN_L_SFNE, OR1K_INSN_L_SFNEI, OR1K_INSN_L_MAC, OR1K_INSN_L_MACI
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, OR1K_INSN_L_MACU, OR1K_INSN_L_MSB, OR1K_INSN_L_MSBU, OR1K_INSN_L_CUST1
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, OR1K_INSN_L_CUST2, OR1K_INSN_L_CUST3, OR1K_INSN_L_CUST4, OR1K_INSN_L_CUST5
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, OR1K_INSN_L_CUST6, OR1K_INSN_L_CUST7, OR1K_INSN_L_CUST8, OR1K_INSN_LF_ADD_S
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, OR1K_INSN_LF_ADD_D32, OR1K_INSN_LF_SUB_S, OR1K_INSN_LF_SUB_D32, OR1K_INSN_LF_MUL_S
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, OR1K_INSN_LF_MUL_D32, OR1K_INSN_LF_DIV_S, OR1K_INSN_LF_DIV_D32, OR1K_INSN_LF_REM_S
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, OR1K_INSN_LF_REM_D32, OR1K_INSN_LF_ITOF_S, OR1K_INSN_LF_ITOF_D32, OR1K_INSN_LF_FTOI_S
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, OR1K_INSN_LF_FTOI_D32, OR1K_INSN_LF_SFEQ_S, OR1K_INSN_LF_SFEQ_D32, OR1K_INSN_LF_SFNE_S
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, OR1K_INSN_LF_SFNE_D32, OR1K_INSN_LF_SFGE_S, OR1K_INSN_LF_SFGE_D32, OR1K_INSN_LF_SFGT_S
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, OR1K_INSN_LF_SFGT_D32, OR1K_INSN_LF_SFLT_S, OR1K_INSN_LF_SFLT_D32, OR1K_INSN_LF_SFLE_S
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, OR1K_INSN_LF_SFLE_D32, OR1K_INSN_LF_SFUEQ_S, OR1K_INSN_LF_SFUEQ_D32, OR1K_INSN_LF_SFUNE_S
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, OR1K_INSN_LF_SFUNE_D32, OR1K_INSN_LF_SFUGT_S, OR1K_INSN_LF_SFUGT_D32, OR1K_INSN_LF_SFUGE_S
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, OR1K_INSN_LF_SFUGE_D32, OR1K_INSN_LF_SFULT_S, OR1K_INSN_LF_SFULT_D32, OR1K_INSN_LF_SFULE_S
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, OR1K_INSN_LF_SFULE_D32, OR1K_INSN_LF_SFUN_S, OR1K_INSN_LF_SFUN_D32, OR1K_INSN_LF_MADD_S
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, OR1K_INSN_LF_MADD_D32, OR1K_INSN_LF_CUST1_S, OR1K_INSN_LF_CUST1_D32
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} CGEN_INSN_TYPE;
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/* Index of `invalid' insn place holder. */
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#define CGEN_INSN_INVALID OR1K_INSN_INVALID
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/* Total number of insns in table. */
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#define MAX_INSNS ((int) OR1K_INSN_LF_CUST1_D32 + 1)
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/* This struct records data prior to insertion or after extraction. */
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struct cgen_fields
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{
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int length;
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long f_nil;
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long f_anyof;
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long f_opcode;
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long f_r1;
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long f_r2;
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long f_r3;
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long f_op_25_2;
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long f_op_25_5;
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long f_op_16_1;
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long f_op_7_4;
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long f_op_3_4;
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long f_op_9_2;
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long f_op_9_4;
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long f_op_7_8;
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long f_op_7_2;
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long f_resv_25_26;
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long f_resv_25_10;
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long f_resv_25_5;
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long f_resv_23_8;
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long f_resv_20_21;
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long f_resv_20_5;
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long f_resv_20_4;
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long f_resv_15_8;
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long f_resv_15_6;
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long f_resv_10_11;
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long f_resv_10_7;
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long f_resv_10_3;
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long f_resv_10_1;
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long f_resv_8_1;
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long f_resv_7_4;
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long f_resv_5_2;
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long f_imm16_25_5;
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long f_imm16_10_11;
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long f_disp26;
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long f_disp21;
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long f_uimm16;
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long f_simm16;
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long f_uimm6;
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long f_uimm16_split;
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long f_simm16_split;
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long f_rdoff_10_1;
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long f_raoff_9_1;
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long f_rboff_8_1;
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long f_rdd32;
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long f_rad32;
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long f_rbd32;
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};
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#define CGEN_INIT_PARSE(od) \
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{\
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}
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#define CGEN_INIT_INSERT(od) \
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{\
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}
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#define CGEN_INIT_EXTRACT(od) \
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{\
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}
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#define CGEN_INIT_PRINT(od) \
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{\
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* OR1K_OPC_H */
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