mirror of
https://sourceware.org/git/binutils-gdb.git
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1331 lines
32 KiB
C
1331 lines
32 KiB
C
/* NDS32-specific support for 32-bit ELF.
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Copyright (C) 2012-2021 Free Software Foundation, Inc.
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Contributed by Andes Technology Corporation.
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This file is part of BFD, the Binary File Descriptor library.
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This program 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 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "sysdep.h"
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#include <stdio.h>
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#include "ansidecl.h"
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#include "disassemble.h"
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#include "bfd.h"
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#include "symcat.h"
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#include "libiberty.h"
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#include "opintl.h"
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#include "bfd_stdint.h"
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#include "hashtab.h"
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#include "nds32-asm.h"
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#include "opcode/nds32.h"
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/* Get fields macro define. */
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#define MASK_OP(insn, mask) ((insn) & (0x3f << 25 | (mask)))
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/* For mapping symbol. */
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enum map_type
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{
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MAP_DATA0,
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MAP_DATA1,
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MAP_DATA2,
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MAP_DATA3,
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MAP_DATA4,
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MAP_CODE,
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};
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struct nds32_private_data
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{
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/* Whether any mapping symbols are present in the provided symbol
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table. -1 if we do not know yet, otherwise 0 or 1. */
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int has_mapping_symbols;
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/* Track the last type (although this doesn't seem to be useful). */
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enum map_type last_mapping_type;
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/* Tracking symbol table information. */
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int last_symbol_index;
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bfd_vma last_addr;
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};
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/* Default text to print if an instruction isn't recognized. */
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#define UNKNOWN_INSN_MSG _("*unknown*")
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#define NDS32_PARSE_INSN16 0x01
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#define NDS32_PARSE_INSN32 0x02
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extern const field_t *nds32_field_table[NDS32_CORE_COUNT];
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extern opcode_t *nds32_opcode_table[NDS32_CORE_COUNT];
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extern keyword_t **nds32_keyword_table[NDS32_CORE_COUNT];
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extern struct nds32_opcode nds32_opcodes[];
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extern const field_t operand_fields[];
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extern keyword_t *keywords[];
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extern const keyword_t keyword_gpr[];
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static uint32_t nds32_mask_opcode (uint32_t);
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static void nds32_special_opcode (uint32_t, struct nds32_opcode **);
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static int get_mapping_symbol_type (struct disassemble_info *, int,
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enum map_type *);
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static int is_mapping_symbol (struct disassemble_info *, int,
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enum map_type *);
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/* Hash function for disassemble. */
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static htab_t opcode_htab;
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/* Find the value map register name. */
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static keyword_t *
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nds32_find_reg_keyword (keyword_t *reg, int value)
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{
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if (!reg)
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return NULL;
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while (reg->name != NULL && reg->value != value)
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{
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reg++;
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}
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if (reg->name == NULL)
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return NULL;
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return reg;
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}
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static void
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nds32_parse_audio_ext (const field_t *pfd,
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disassemble_info *info, uint32_t insn)
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{
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fprintf_ftype func = info->fprintf_func;
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void *stream = info->stream;
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keyword_t *psys_reg;
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int int_value, new_value;
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if (pfd->hw_res == HW_INT || pfd->hw_res == HW_UINT)
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{
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if (pfd->hw_res == HW_INT)
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int_value = (unsigned) N32_IMMS (insn >> pfd->bitpos,
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pfd->bitsize) << pfd->shift;
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else
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int_value = __GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift;
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if (int_value < 10)
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func (stream, "#%d", int_value);
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else
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func (stream, "#0x%x", int_value);
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return;
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}
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int_value =
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__GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift;
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new_value = int_value;
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psys_reg = (keyword_t*) keywords[pfd->hw_res];
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/* p = bit[4].bit[1:0], r = bit[4].bit[3:2]. */
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if (strcmp (pfd->name, "im5_i") == 0)
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{
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new_value = int_value & 0x03;
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new_value |= ((int_value & 0x10) >> 2);
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}
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else if (strcmp (pfd->name, "im5_m") == 0)
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{
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new_value = ((int_value & 0x1C) >> 2);
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}
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/* p = 0.bit[1:0], r = 0.bit[3:2]. */
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/* q = 1.bit[1:0], s = 1.bit[5:4]. */
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else if (strcmp (pfd->name, "im6_iq") == 0)
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{
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new_value |= 0x04;
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}
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else if (strcmp (pfd->name, "im6_ms") == 0)
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{
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new_value |= 0x04;
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}
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/* Rt CONCAT(c, t21, t0). */
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else if (strcmp (pfd->name, "a_rt21") == 0)
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{
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new_value = (insn & 0x00000020) >> 5;
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new_value |= (insn & 0x00000C00) >> 9;
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new_value |= (insn & 0x00008000) >> 12;
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}
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else if (strcmp (pfd->name, "a_rte") == 0)
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{
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new_value = (insn & 0x00000C00) >> 9;
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new_value |= (insn & 0x00008000) >> 12;
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}
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else if (strcmp (pfd->name, "a_rte1") == 0)
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{
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new_value = (insn & 0x00000C00) >> 9;
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new_value |= (insn & 0x00008000) >> 12;
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new_value |= 0x01;
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}
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else if (strcmp (pfd->name, "a_rte69") == 0)
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{
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new_value = int_value << 1;
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}
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else if (strcmp (pfd->name, "a_rte69_1") == 0)
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{
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new_value = int_value << 1;
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new_value |= 0x01;
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}
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psys_reg = nds32_find_reg_keyword (psys_reg, new_value);
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if (!psys_reg)
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func (stream, "???");
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else
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func (stream, "$%s", psys_reg->name);
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}
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/* Match instruction opcode with keyword table. */
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static field_t *
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match_field (char *name)
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{
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field_t *pfd;
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int k;
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for (k = 0; k < NDS32_CORE_COUNT; k++)
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{
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pfd = (field_t *) nds32_field_table[k];
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while (1)
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{
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if (pfd->name == NULL)
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break;
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if (strcmp (name, pfd->name) == 0)
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return pfd;
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pfd++;
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}
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}
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return NULL;
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}
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/* Dump instruction. If the opcode is unknown, return FALSE. */
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static void
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nds32_parse_opcode (struct nds32_opcode *opc, bfd_vma pc ATTRIBUTE_UNUSED,
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disassemble_info *info, uint32_t insn,
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uint32_t parse_mode)
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{
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int op = 0;
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fprintf_ftype func = info->fprintf_func;
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void *stream = info->stream;
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const char *pstr_src;
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char *pstr_tmp;
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char tmp_string[16];
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unsigned int push25gpr = 0, lsmwRb, lsmwRe, lsmwEnb4, checkbit, i;
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int int_value, ifthe1st = 1;
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const field_t *pfd;
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keyword_t *psys_reg;
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if (opc == NULL)
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{
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func (stream, UNKNOWN_INSN_MSG);
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return;
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}
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pstr_src = opc->instruction;
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if (*pstr_src == 0)
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{
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func (stream, "%s", opc->opcode);
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return;
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}
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/* NDS32_PARSE_INSN16. */
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if (parse_mode & NDS32_PARSE_INSN16)
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{
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func (stream, "%s ", opc->opcode);
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}
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/* NDS32_PARSE_INSN32. */
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else
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{
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op = N32_OP6 (insn);
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if (op == N32_OP6_LSMW)
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func (stream, "%s.", opc->opcode);
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else if (strstr (opc->instruction, "tito"))
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func (stream, "%s", opc->opcode);
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else
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func (stream, "%s\t", opc->opcode);
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}
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while (*pstr_src)
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{
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switch (*pstr_src)
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{
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case '%':
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case '=':
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case '&':
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pstr_src++;
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/* Compare with operand_fields[].name. */
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pstr_tmp = &tmp_string[0];
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while (*pstr_src)
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{
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if ((*pstr_src == ',') || (*pstr_src == ' ')
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|| (*pstr_src == '{') || (*pstr_src == '}')
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|| (*pstr_src == '[') || (*pstr_src == ']')
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|| (*pstr_src == '(') || (*pstr_src == ')')
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|| (*pstr_src == '+') || (*pstr_src == '<'))
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break;
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*pstr_tmp++ = *pstr_src++;
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}
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*pstr_tmp = 0;
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if ((pfd = match_field (&tmp_string[0])) == NULL)
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return;
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/* For insn-16. */
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if (parse_mode & NDS32_PARSE_INSN16)
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{
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if (pfd->hw_res == HW_GPR)
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{
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int_value =
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__GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift;
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/* push25/pop25. */
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if ((opc->value == 0xfc00) || (opc->value == 0xfc80))
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{
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if (int_value == 0)
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int_value = 6;
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else
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int_value = (6 + (0x01 << int_value));
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push25gpr = int_value;
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}
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else if (strcmp (pfd->name, "rt4") == 0)
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{
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int_value = nds32_r45map[int_value];
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}
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func (stream, "$%s", keyword_gpr[int_value].name);
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}
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else if ((pfd->hw_res == HW_INT) || (pfd->hw_res == HW_UINT))
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{
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if (pfd->hw_res == HW_INT)
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int_value
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= (unsigned) N32_IMMS (insn >> pfd->bitpos,
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pfd->bitsize) << pfd->shift;
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else
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int_value =
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__GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift;
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/* movpi45. */
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if (opc->value == 0xfa00)
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{
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int_value += 16;
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func (stream, "#0x%x", int_value);
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}
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/* lwi45.fe. */
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else if (opc->value == 0xb200)
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{
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int_value = 0 - (128 - int_value);
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func (stream, "#%d", int_value);
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}
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/* beqz38/bnez38/beqs38/bnes38/j8/beqzs8/bnezs8. */
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else if ((opc->value == 0xc000) || (opc->value == 0xc800)
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|| (opc->value == 0xd000) || (opc->value == 0xd800)
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|| (opc->value == 0xd500) || (opc->value == 0xe800)
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|| (opc->value == 0xe900))
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{
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info->print_address_func (int_value + pc, info);
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}
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/* push25/pop25. */
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else if ((opc->value == 0xfc00) || (opc->value == 0xfc80))
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{
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func (stream, "#%d ! {$r6", int_value);
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if (push25gpr != 6)
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func (stream, "~$%s", keyword_gpr[push25gpr].name);
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func (stream, ", $fp, $gp, $lp}");
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}
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else if (pfd->hw_res == HW_INT)
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{
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if (int_value < 10)
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func (stream, "#%d", int_value);
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else
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func (stream, "#0x%x", int_value);
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}
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else /* if (pfd->hw_res == HW_UINT). */
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{
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if (int_value < 10)
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func (stream, "#%u", int_value);
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else
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func (stream, "#0x%x", int_value);
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}
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}
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}
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/* for audio-ext. */
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else if (op == N32_OP6_AEXT)
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{
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nds32_parse_audio_ext (pfd, info, insn);
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}
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/* for insn-32. */
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else if (pfd->hw_res < HW_INT)
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{
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int_value =
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__GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift;
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psys_reg = *(nds32_keyword_table[pfd->hw_res >> 8]
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+ (pfd->hw_res & 0xff));
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psys_reg = nds32_find_reg_keyword (psys_reg, int_value);
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/* For HW_SR, dump the index when it can't
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map the register name. */
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if (!psys_reg && pfd->hw_res == HW_SR)
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func (stream, "%d", int_value);
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else if (!psys_reg)
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func (stream, "???");
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else
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{
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if (pfd->hw_res == HW_GPR || pfd->hw_res == HW_CPR
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|| pfd->hw_res == HW_FDR || pfd->hw_res == HW_FSR
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|| pfd->hw_res == HW_DXR || pfd->hw_res == HW_SR
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|| pfd->hw_res == HW_USR)
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func (stream, "$%s", psys_reg->name);
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else if (pfd->hw_res == HW_DTITON
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|| pfd->hw_res == HW_DTITOFF)
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func (stream, ".%s", psys_reg->name);
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else
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func (stream, "%s", psys_reg->name);
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}
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}
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else if ((pfd->hw_res == HW_INT) || (pfd->hw_res == HW_UINT))
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{
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if (pfd->hw_res == HW_INT)
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int_value = (unsigned) N32_IMMS (insn >> pfd->bitpos,
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pfd->bitsize) << pfd->shift;
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else
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int_value =
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__GF (insn, pfd->bitpos, pfd->bitsize) << pfd->shift;
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if ((op == N32_OP6_BR1) || (op == N32_OP6_BR2))
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{
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info->print_address_func (int_value + pc, info);
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}
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else if ((op == N32_OP6_BR3) && (pfd->bitpos == 0))
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{
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info->print_address_func (int_value + pc, info);
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}
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else if (op == N32_OP6_JI)
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{
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/* FIXME: Handle relocation. */
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if (info->flags & INSN_HAS_RELOC)
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pc = 0;
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info->print_address_func (int_value + pc, info);
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}
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else if (op == N32_OP6_LSMW)
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{
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/* lmw.adm/smw.adm. */
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func (stream, "#0x%x ! {", int_value);
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lsmwEnb4 = int_value;
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lsmwRb = ((insn >> 20) & 0x1F);
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lsmwRe = ((insn >> 10) & 0x1F);
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/* If [Rb, Re] specifies at least one register,
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Rb(4,0) <= Re(4,0) and 0 <= Rb(4,0), Re(4,0) < 28.
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Disassembling does not consider this currently because of
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the convience comparing with bsp320. */
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if (lsmwRb != 31 || lsmwRe != 31)
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{
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func (stream, "$%s", keyword_gpr[lsmwRb].name);
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if (lsmwRb != lsmwRe)
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func (stream, "~$%s", keyword_gpr[lsmwRe].name);
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ifthe1st = 0;
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}
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if (lsmwEnb4 != 0)
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{
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/* $fp, $gp, $lp, $sp. */
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checkbit = 0x08;
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for (i = 0; i < 4; i++)
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{
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if (lsmwEnb4 & checkbit)
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{
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if (ifthe1st == 1)
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{
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ifthe1st = 0;
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func (stream, "$%s", keyword_gpr[28 + i].name);
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}
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else
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func (stream, ", $%s", keyword_gpr[28 + i].name);
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}
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checkbit >>= 1;
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}
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}
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func (stream, "}");
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}
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else if (pfd->hw_res == HW_INT)
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{
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if (int_value < 10)
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func (stream, "#%d", int_value);
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else
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func (stream, "#0x%x", int_value);
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}
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else /* if (pfd->hw_res == HW_UINT). */
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{
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if (int_value < 10)
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func (stream, "#%u", int_value);
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else
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func (stream, "#0x%x", int_value);
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}
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}
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break;
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|
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case '{':
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case '}':
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pstr_src++;
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break;
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|
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case ',':
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func (stream, ", ");
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pstr_src++;
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break;
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|
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case '+':
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func (stream, " + ");
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pstr_src++;
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break;
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|
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case '<':
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if (pstr_src[1] == '<')
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{
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func (stream, " << ");
|
|
pstr_src += 2;
|
|
}
|
|
else
|
|
{
|
|
func (stream, " <");
|
|
pstr_src++;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
func (stream, "%c", *pstr_src++);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Filter instructions with some bits must be fixed. */
|
|
|
|
static void
|
|
nds32_filter_unknown_insn (uint32_t insn, struct nds32_opcode **opc)
|
|
{
|
|
if (!(*opc))
|
|
return;
|
|
|
|
switch ((*opc)->value)
|
|
{
|
|
case JREG (JR):
|
|
case JREG (JRNEZ):
|
|
/* jr jr.xtoff */
|
|
if (__GF (insn, 6, 2) != 0 || __GF (insn, 15, 10) != 0)
|
|
*opc = NULL;
|
|
break;
|
|
case MISC (STANDBY):
|
|
if (__GF (insn, 7, 18) != 0)
|
|
*opc = NULL;
|
|
break;
|
|
case SIMD (PBSAD):
|
|
case SIMD (PBSADA):
|
|
if (__GF (insn, 5, 5) != 0)
|
|
*opc = NULL;
|
|
break;
|
|
case BR2 (SOP0):
|
|
if (__GF (insn, 20, 5) != 0)
|
|
*opc = NULL;
|
|
break;
|
|
case JREG (JRAL):
|
|
if (__GF (insn, 5, 3) != 0 || __GF (insn, 15, 5) != 0)
|
|
*opc = NULL;
|
|
break;
|
|
case ALU1 (NOR):
|
|
case ALU1 (SLT):
|
|
case ALU1 (SLTS):
|
|
case ALU1 (SLLI):
|
|
case ALU1 (SRLI):
|
|
case ALU1 (SRAI):
|
|
case ALU1 (ROTRI):
|
|
case ALU1 (SLL):
|
|
case ALU1 (SRL):
|
|
case ALU1 (SRA):
|
|
case ALU1 (ROTR):
|
|
case ALU1 (SEB):
|
|
case ALU1 (SEH):
|
|
case ALU1 (ZEH):
|
|
case ALU1 (WSBH):
|
|
case ALU1 (SVA):
|
|
case ALU1 (SVS):
|
|
case ALU1 (CMOVZ):
|
|
case ALU1 (CMOVN):
|
|
if (__GF (insn, 5, 5) != 0)
|
|
*opc = NULL;
|
|
break;
|
|
case MISC (IRET):
|
|
case MISC (ISB):
|
|
case MISC (DSB):
|
|
if (__GF (insn, 5, 20) != 0)
|
|
*opc = NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
print_insn32 (bfd_vma pc, disassemble_info *info, uint32_t insn,
|
|
uint32_t parse_mode)
|
|
{
|
|
/* Get the final correct opcode and parse. */
|
|
struct nds32_opcode *opc;
|
|
uint32_t opcode = nds32_mask_opcode (insn);
|
|
opc = (struct nds32_opcode *) htab_find (opcode_htab, &opcode);
|
|
|
|
nds32_special_opcode (insn, &opc);
|
|
nds32_filter_unknown_insn (insn, &opc);
|
|
nds32_parse_opcode (opc, pc, info, insn, parse_mode);
|
|
}
|
|
|
|
static void
|
|
print_insn16 (bfd_vma pc, disassemble_info *info,
|
|
uint32_t insn, uint32_t parse_mode)
|
|
{
|
|
struct nds32_opcode *opc;
|
|
uint32_t opcode;
|
|
|
|
/* Get highest 7 bit in default. */
|
|
unsigned int mask = 0xfe00;
|
|
|
|
/* Classify 16-bit instruction to 4 sets by bit 13 and 14. */
|
|
switch (__GF (insn, 13, 2))
|
|
{
|
|
case 0x0:
|
|
/* mov55 movi55 */
|
|
if (__GF (insn, 11, 2) == 0)
|
|
{
|
|
mask = 0xfc00;
|
|
/* ifret16 = mov55 $sp, $sp*/
|
|
if (__GF (insn, 0, 11) == 0x3ff)
|
|
mask = 0xffff;
|
|
}
|
|
else if (__GF (insn, 9, 4) == 0xb)
|
|
mask = 0xfe07;
|
|
break;
|
|
case 0x1:
|
|
/* lwi37 swi37 */
|
|
if (__GF (insn, 11, 2) == 0x3)
|
|
mask = 0xf880;
|
|
break;
|
|
case 0x2:
|
|
mask = 0xf800;
|
|
/* Exclude beqz38, bnez38, beqs38, and bnes38. */
|
|
if (__GF (insn, 12, 1) == 0x1
|
|
&& __GF (insn, 8, 3) == 0x5)
|
|
{
|
|
if (__GF (insn, 11, 1) == 0x0)
|
|
mask = 0xff00;
|
|
else
|
|
mask = 0xffe0;
|
|
}
|
|
break;
|
|
case 0x3:
|
|
switch (__GF (insn, 11, 2))
|
|
{
|
|
case 0x1:
|
|
/* beqzs8 bnezs8 */
|
|
if (__GF (insn, 9, 2) == 0x0)
|
|
mask = 0xff00;
|
|
/* addi10s */
|
|
else if (__GF(insn, 10, 1) == 0x1)
|
|
mask = 0xfc00;
|
|
break;
|
|
case 0x2:
|
|
/* lwi37.sp swi37.sp */
|
|
mask = 0xf880;
|
|
break;
|
|
case 0x3:
|
|
if (__GF (insn, 8, 3) == 0x5)
|
|
mask = 0xff00;
|
|
else if (__GF (insn, 8, 3) == 0x4)
|
|
mask = 0xff80;
|
|
else if (__GF (insn, 9 , 2) == 0x3)
|
|
mask = 0xfe07;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
opcode = insn & mask;
|
|
opc = (struct nds32_opcode *) htab_find (opcode_htab, &opcode);
|
|
|
|
nds32_special_opcode (insn, &opc);
|
|
/* Get the final correct opcode and parse it. */
|
|
nds32_parse_opcode (opc, pc, info, insn, parse_mode);
|
|
}
|
|
|
|
static hashval_t
|
|
htab_hash_hash (const void *p)
|
|
{
|
|
return (*(unsigned int *) p) % 49;
|
|
}
|
|
|
|
static int
|
|
htab_hash_eq (const void *p, const void *q)
|
|
{
|
|
uint32_t pinsn = ((struct nds32_opcode *) p)->value;
|
|
uint32_t qinsn = *((uint32_t *) q);
|
|
|
|
return (pinsn == qinsn);
|
|
}
|
|
|
|
/* Get the format of instruction. */
|
|
|
|
static uint32_t
|
|
nds32_mask_opcode (uint32_t insn)
|
|
{
|
|
uint32_t opcode = N32_OP6 (insn);
|
|
switch (opcode)
|
|
{
|
|
case N32_OP6_LBI:
|
|
case N32_OP6_LHI:
|
|
case N32_OP6_LWI:
|
|
case N32_OP6_LDI:
|
|
case N32_OP6_LBI_BI:
|
|
case N32_OP6_LHI_BI:
|
|
case N32_OP6_LWI_BI:
|
|
case N32_OP6_LDI_BI:
|
|
case N32_OP6_SBI:
|
|
case N32_OP6_SHI:
|
|
case N32_OP6_SWI:
|
|
case N32_OP6_SDI:
|
|
case N32_OP6_SBI_BI:
|
|
case N32_OP6_SHI_BI:
|
|
case N32_OP6_SWI_BI:
|
|
case N32_OP6_SDI_BI:
|
|
case N32_OP6_LBSI:
|
|
case N32_OP6_LHSI:
|
|
case N32_OP6_LWSI:
|
|
case N32_OP6_LBSI_BI:
|
|
case N32_OP6_LHSI_BI:
|
|
case N32_OP6_LWSI_BI:
|
|
case N32_OP6_MOVI:
|
|
case N32_OP6_SETHI:
|
|
case N32_OP6_ADDI:
|
|
case N32_OP6_SUBRI:
|
|
case N32_OP6_ANDI:
|
|
case N32_OP6_XORI:
|
|
case N32_OP6_ORI:
|
|
case N32_OP6_SLTI:
|
|
case N32_OP6_SLTSI:
|
|
case N32_OP6_CEXT:
|
|
case N32_OP6_BITCI:
|
|
return MASK_OP (insn, 0);
|
|
case N32_OP6_ALU2:
|
|
/* FFBI */
|
|
if (__GF (insn, 0, 7) == (N32_ALU2_FFBI | N32_BIT (6)))
|
|
return MASK_OP (insn, 0x7f);
|
|
else if (__GF (insn, 0, 7) == (N32_ALU2_MFUSR | N32_BIT (6))
|
|
|| __GF (insn, 0, 7) == (N32_ALU2_MTUSR | N32_BIT (6)))
|
|
/* RDOV CLROV */
|
|
return MASK_OP (insn, 0xf81ff);
|
|
else if (__GF (insn, 0, 10) == (N32_ALU2_ONEOP | N32_BIT (7)))
|
|
{
|
|
/* INSB */
|
|
if (__GF (insn, 12, 3) == 4)
|
|
return MASK_OP (insn, 0x73ff);
|
|
return MASK_OP (insn, 0x7fff);
|
|
}
|
|
return MASK_OP (insn, 0x3ff);
|
|
case N32_OP6_ALU1:
|
|
case N32_OP6_SIMD:
|
|
return MASK_OP (insn, 0x1f);
|
|
case N32_OP6_MEM:
|
|
return MASK_OP (insn, 0xff);
|
|
case N32_OP6_JREG:
|
|
return MASK_OP (insn, 0x7f);
|
|
case N32_OP6_LSMW:
|
|
return MASK_OP (insn, 0x23);
|
|
case N32_OP6_SBGP:
|
|
case N32_OP6_LBGP:
|
|
return MASK_OP (insn, 0x1 << 19);
|
|
case N32_OP6_HWGP:
|
|
if (__GF (insn, 18, 2) == 0x3)
|
|
return MASK_OP (insn, 0x7 << 17);
|
|
return MASK_OP (insn, 0x3 << 18);
|
|
case N32_OP6_DPREFI:
|
|
return MASK_OP (insn, 0x1 << 24);
|
|
case N32_OP6_LWC:
|
|
case N32_OP6_SWC:
|
|
case N32_OP6_LDC:
|
|
case N32_OP6_SDC:
|
|
return MASK_OP (insn, 0x1 << 12);
|
|
case N32_OP6_JI:
|
|
return MASK_OP (insn, 0x1 << 24);
|
|
case N32_OP6_BR1:
|
|
return MASK_OP (insn, 0x1 << 14);
|
|
case N32_OP6_BR2:
|
|
if (__GF (insn, 16, 4) == 0)
|
|
return MASK_OP (insn, 0x1ff << 16);
|
|
else
|
|
return MASK_OP (insn, 0xf << 16);
|
|
case N32_OP6_BR3:
|
|
return MASK_OP (insn, 0x1 << 19);
|
|
case N32_OP6_MISC:
|
|
switch (__GF (insn, 0, 5))
|
|
{
|
|
case N32_MISC_MTSR:
|
|
/* SETGIE and SETEND */
|
|
if (__GF (insn, 5, 5) == 0x1 || __GF (insn, 5, 5) == 0x2)
|
|
return MASK_OP (insn, 0x1fffff);
|
|
return MASK_OP (insn, 0x1f);
|
|
case N32_MISC_TLBOP:
|
|
if (__GF (insn, 5, 5) == 5 || __GF (insn, 5, 5) == 7)
|
|
/* PB FLUA */
|
|
return MASK_OP (insn, 0x3ff);
|
|
return MASK_OP (insn, 0x1f);
|
|
default:
|
|
return MASK_OP (insn, 0x1f);
|
|
}
|
|
case N32_OP6_COP:
|
|
if (__GF (insn, 4, 2) == 0)
|
|
{
|
|
/* FPU */
|
|
switch (__GF (insn, 0, 4))
|
|
{
|
|
case 0x0:
|
|
case 0x8:
|
|
/* FS1/F2OP FD1/F2OP */
|
|
if (__GF (insn, 6, 4) == 0xf)
|
|
return MASK_OP (insn, 0x7fff);
|
|
/* FS1 FD1 */
|
|
return MASK_OP (insn, 0x3ff);
|
|
case 0x4:
|
|
case 0xc:
|
|
/* FS2 */
|
|
return MASK_OP (insn, 0x3ff);
|
|
case 0x1:
|
|
case 0x9:
|
|
/* XR */
|
|
if (__GF (insn, 6, 4) == 0xc)
|
|
return MASK_OP (insn, 0x7fff);
|
|
/* MFCP MTCP */
|
|
return MASK_OP (insn, 0x3ff);
|
|
default:
|
|
return MASK_OP (insn, 0xff);
|
|
}
|
|
}
|
|
else if (__GF (insn, 0, 2) == 0)
|
|
return MASK_OP (insn, 0xf);
|
|
return MASK_OP (insn, 0xcf);
|
|
case N32_OP6_AEXT:
|
|
/* AUDIO */
|
|
switch (__GF (insn, 23, 2))
|
|
{
|
|
case 0x0:
|
|
if (__GF (insn, 5, 4) == 0)
|
|
/* AMxxx AMAyyS AMyyS AMAWzS AMWzS */
|
|
return MASK_OP (insn, (0x1f << 20) | 0x1ff);
|
|
else if (__GF (insn, 5, 4) == 1)
|
|
/* ALR ASR ALA ASA AUPI */
|
|
return MASK_OP (insn, (0x1f << 20) | (0xf << 5));
|
|
else if (__GF (insn, 20, 3) == 0 && __GF (insn, 6, 3) == 1)
|
|
/* ALR2 */
|
|
return MASK_OP (insn, (0x1f << 20) | (0x7 << 6));
|
|
else if (__GF (insn, 20 ,3) == 2 && __GF (insn, 6, 3) == 1)
|
|
/* AWEXT ASATS48 */
|
|
return MASK_OP (insn, (0x1f << 20) | (0xf << 5));
|
|
else if (__GF (insn, 20 ,3) == 3 && __GF (insn, 6, 3) == 1)
|
|
/* AMTAR AMTAR2 AMFAR AMFAR2 */
|
|
return MASK_OP (insn, (0x1f << 20) | (0x1f << 5));
|
|
else if (__GF (insn, 7, 2) == 3)
|
|
/* AMxxxSA */
|
|
return MASK_OP (insn, (0x1f << 20) | (0x3 << 7));
|
|
else if (__GF (insn, 6, 3) == 2)
|
|
/* AMxxxL.S */
|
|
return MASK_OP (insn, (0x1f << 20) | (0xf << 5));
|
|
else
|
|
/* AmxxxL.l AmxxxL2.S AMxxxL2.L */
|
|
return MASK_OP (insn, (0x1f << 20) | (0x7 << 6));
|
|
case 0x1:
|
|
if (__GF (insn, 20, 3) == 0)
|
|
/* AADDL ASUBL */
|
|
return MASK_OP (insn, (0x1f << 20) | (0x1 << 5));
|
|
else if (__GF (insn, 20, 3) == 1)
|
|
/* AMTARI Ix AMTARI Mx */
|
|
return MASK_OP (insn, (0x1f << 20));
|
|
else if (__GF (insn, 6, 3) == 2)
|
|
/* AMAWzSl.S AMWzSl.S */
|
|
return MASK_OP (insn, (0x1f << 20) | (0xf << 5));
|
|
else if (__GF (insn, 7, 2) == 3)
|
|
/* AMAWzSSA AMWzSSA */
|
|
return MASK_OP (insn, (0x1f << 20) | (0x3 << 7));
|
|
else
|
|
/* AMAWzSL.L AMAWzSL2.S AMAWzSL2.L
|
|
AMWzSL.L AMWzSL.L AMWzSL2.S */
|
|
return MASK_OP (insn, (0x1f << 20) | (0x7 << 6));
|
|
case 0x2:
|
|
if (__GF (insn, 6, 3) == 2)
|
|
/* AMAyySl.S AMWyySl.S */
|
|
return MASK_OP (insn, (0x1f << 20) | (0xf << 5));
|
|
else if (__GF (insn, 7, 2) == 3)
|
|
/* AMAWyySSA AMWyySSA */
|
|
return MASK_OP (insn, (0x1f << 20) | (0x3 << 7));
|
|
else
|
|
/* AMAWyySL.L AMAWyySL2.S AMAWyySL2.L
|
|
AMWyySL.L AMWyySL.L AMWyySL2.S */
|
|
return MASK_OP (insn, (0x1f << 20) | (0x7 << 6));
|
|
}
|
|
return MASK_OP (insn, 0x1f << 20);
|
|
default:
|
|
return 1u << 31;
|
|
}
|
|
}
|
|
|
|
/* Define cctl subtype. */
|
|
static char *cctl_subtype [] =
|
|
{
|
|
/* 0x0 */
|
|
"st0", "st0", "st0", "st2", "st2", "st3", "st3", "st4",
|
|
"st1", "st1", "st1", "st0", "st0", NULL, NULL, "st5",
|
|
/* 0x10 */
|
|
"st0", NULL, NULL, "st2", "st2", "st3", "st3", NULL,
|
|
"st1", NULL, NULL, "st0", "st0", NULL, NULL, NULL
|
|
};
|
|
|
|
/* Check the subset of opcode. */
|
|
|
|
static void
|
|
nds32_special_opcode (uint32_t insn, struct nds32_opcode **opc)
|
|
{
|
|
char *string = NULL;
|
|
uint32_t op;
|
|
|
|
if (!(*opc))
|
|
return;
|
|
|
|
/* Check if special case. */
|
|
switch ((*opc)->value)
|
|
{
|
|
case OP6 (LWC):
|
|
case OP6 (SWC):
|
|
case OP6 (LDC):
|
|
case OP6 (SDC):
|
|
case FPU_RA_IMMBI (LWC):
|
|
case FPU_RA_IMMBI (SWC):
|
|
case FPU_RA_IMMBI (LDC):
|
|
case FPU_RA_IMMBI (SDC):
|
|
/* Check if cp0 => FPU. */
|
|
if (__GF (insn, 13, 2) == 0)
|
|
{
|
|
while (!((*opc)->attr & ATTR (FPU)) && (*opc)->next)
|
|
*opc = (*opc)->next;
|
|
}
|
|
break;
|
|
case ALU1 (ADD):
|
|
case ALU1 (SUB):
|
|
case ALU1 (AND):
|
|
case ALU1 (XOR):
|
|
case ALU1 (OR):
|
|
/* Check if (add/add_slli) (sub/sub_slli) (and/and_slli). */
|
|
if (N32_SH5(insn) != 0)
|
|
string = "sh";
|
|
break;
|
|
case ALU1 (SRLI):
|
|
/* Check if nop. */
|
|
if (__GF (insn, 10, 15) == 0)
|
|
string = "nop";
|
|
break;
|
|
case MISC (CCTL):
|
|
string = cctl_subtype [__GF (insn, 5, 5)];
|
|
break;
|
|
case JREG (JR):
|
|
case JREG (JRAL):
|
|
case JREG (JR) | JREG_RET:
|
|
if (__GF (insn, 8, 2) != 0)
|
|
string = "tit";
|
|
break;
|
|
case N32_OP6_COP:
|
|
break;
|
|
case 0x9200:
|
|
/* nop16 */
|
|
if (__GF (insn, 0, 9) == 0)
|
|
string = "nop16";
|
|
break;
|
|
}
|
|
|
|
if (string)
|
|
{
|
|
while (strstr ((*opc)->opcode, string) == NULL
|
|
&& strstr ((*opc)->instruction, string) == NULL && (*opc)->next)
|
|
*opc = (*opc)->next;
|
|
return;
|
|
}
|
|
|
|
/* Classify instruction is COP or FPU. */
|
|
op = N32_OP6 (insn);
|
|
if (op == N32_OP6_COP && __GF (insn, 4, 2) != 0)
|
|
{
|
|
while (((*opc)->attr & ATTR (FPU)) != 0 && (*opc)->next)
|
|
*opc = (*opc)->next;
|
|
}
|
|
}
|
|
|
|
int
|
|
print_insn_nds32 (bfd_vma pc, disassemble_info *info)
|
|
{
|
|
int status;
|
|
bfd_byte buf[4];
|
|
bfd_byte buf_data[16];
|
|
uint64_t given;
|
|
uint64_t given1;
|
|
uint32_t insn;
|
|
int n;
|
|
int last_symbol_index = -1;
|
|
bfd_vma addr;
|
|
int is_data = FALSE;
|
|
bfd_boolean found = FALSE;
|
|
struct nds32_private_data *private_data;
|
|
unsigned int size;
|
|
enum map_type mapping_type = MAP_CODE;
|
|
|
|
if (info->private_data == NULL)
|
|
{
|
|
/* Note: remain lifecycle throughout whole execution. */
|
|
static struct nds32_private_data private;
|
|
private.has_mapping_symbols = -1; /* unknown yet. */
|
|
private.last_symbol_index = -1;
|
|
private.last_addr = 0;
|
|
info->private_data = &private;
|
|
}
|
|
private_data = info->private_data;
|
|
|
|
if (info->symtab_size != 0)
|
|
{
|
|
int start;
|
|
if (pc == 0)
|
|
start = 0;
|
|
else
|
|
{
|
|
start = info->symtab_pos;
|
|
if (start < private_data->last_symbol_index)
|
|
start = private_data->last_symbol_index;
|
|
}
|
|
|
|
if (0 > start)
|
|
start = 0;
|
|
|
|
if (private_data->has_mapping_symbols != 0
|
|
&& ((strncmp (".text", info->section->name, 5) == 0)))
|
|
{
|
|
for (n = start; n < info->symtab_size; n++)
|
|
{
|
|
addr = bfd_asymbol_value (info->symtab[n]);
|
|
if (addr > pc)
|
|
break;
|
|
if (get_mapping_symbol_type (info, n, &mapping_type))
|
|
{
|
|
last_symbol_index = n;
|
|
found = TRUE;
|
|
}
|
|
}
|
|
|
|
if (found)
|
|
private_data->has_mapping_symbols = 1;
|
|
else if (!found && private_data->has_mapping_symbols == -1)
|
|
{
|
|
/* Make sure there are no any mapping symbol. */
|
|
for (n = 0; n < info->symtab_size; n++)
|
|
{
|
|
if (is_mapping_symbol (info, n, &mapping_type))
|
|
{
|
|
private_data->has_mapping_symbols = -1;
|
|
break;
|
|
}
|
|
}
|
|
if (private_data->has_mapping_symbols == -1)
|
|
private_data->has_mapping_symbols = 0;
|
|
}
|
|
|
|
private_data->last_symbol_index = last_symbol_index;
|
|
private_data->last_mapping_type = mapping_type;
|
|
is_data = (private_data->last_mapping_type == MAP_DATA0
|
|
|| private_data->last_mapping_type == MAP_DATA1
|
|
|| private_data->last_mapping_type == MAP_DATA2
|
|
|| private_data->last_mapping_type == MAP_DATA3
|
|
|| private_data->last_mapping_type == MAP_DATA4);
|
|
}
|
|
}
|
|
|
|
/* Wonder data or instruction. */
|
|
if (is_data)
|
|
{
|
|
unsigned int i1;
|
|
|
|
/* Fix corner case: there is no next mapping symbol,
|
|
let mapping type decides size */
|
|
size = 16;
|
|
if (last_symbol_index + 1 >= info->symtab_size)
|
|
{
|
|
if (mapping_type == MAP_DATA0)
|
|
size = 1;
|
|
if (mapping_type == MAP_DATA1)
|
|
size = 2;
|
|
if (mapping_type == MAP_DATA2)
|
|
size = 4;
|
|
if (mapping_type == MAP_DATA3)
|
|
size = 8;
|
|
if (mapping_type == MAP_DATA4)
|
|
size = 16;
|
|
}
|
|
for (n = last_symbol_index + 1; n < info->symtab_size; n++)
|
|
{
|
|
addr = bfd_asymbol_value (info->symtab[n]);
|
|
|
|
enum map_type fake_mapping_type;
|
|
if (get_mapping_symbol_type (info, n, &fake_mapping_type)
|
|
&& (addr > pc
|
|
&& ((info->section == NULL)
|
|
|| (info->section == info->symtab[n]->section)))
|
|
&& (addr - pc < size))
|
|
{
|
|
size = addr - pc;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (size == 3)
|
|
size = (pc & 1) ? 1 : 2;
|
|
|
|
/* Read bytes from BFD. */
|
|
info->read_memory_func (pc, buf_data, size, info);
|
|
given = 0;
|
|
given1 = 0;
|
|
/* Start assembling data. */
|
|
/* Little endian of data. */
|
|
if (info->endian == BFD_ENDIAN_LITTLE)
|
|
{
|
|
for (i1 = size - 1;; i1--)
|
|
{
|
|
if (i1 >= 8)
|
|
given1 = buf_data[i1] | (given1 << 8);
|
|
else
|
|
given = buf_data[i1] | (given << 8);
|
|
|
|
if (i1 == 0)
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Big endian of data. */
|
|
for (i1 = 0; i1 < size; i1++)
|
|
{
|
|
if (i1 <= 7)
|
|
given = buf_data[i1] | (given << 8);
|
|
else
|
|
given1 = buf_data[i1] | (given1 << 8);
|
|
}
|
|
}
|
|
|
|
info->bytes_per_line = 4;
|
|
|
|
if (size == 16)
|
|
info->fprintf_func (info->stream, ".qword\t0x%016" PRIx64 "%016" PRIx64,
|
|
given, given1);
|
|
else if (size == 8)
|
|
info->fprintf_func (info->stream, ".dword\t0x%016" PRIx64, given);
|
|
else if (size == 4)
|
|
info->fprintf_func (info->stream, ".word\t0x%08" PRIx64, given);
|
|
else if (size == 2)
|
|
{
|
|
/* short */
|
|
if (mapping_type == MAP_DATA0)
|
|
info->fprintf_func (info->stream, ".byte\t0x%02" PRIx64,
|
|
given & 0xFF);
|
|
else
|
|
info->fprintf_func (info->stream, ".short\t0x%04" PRIx64, given);
|
|
}
|
|
else
|
|
{
|
|
/* byte */
|
|
info->fprintf_func (info->stream, ".byte\t0x%02" PRIx64, given);
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
size = 4;
|
|
status = info->read_memory_func (pc, buf, 4, info);
|
|
if (status)
|
|
{
|
|
/* For the last 16-bit instruction. */
|
|
size = 2;
|
|
status = info->read_memory_func (pc, buf, 2, info);
|
|
if (status)
|
|
{
|
|
(*info->memory_error_func) (status, pc, info);
|
|
return -1;
|
|
}
|
|
buf[2] = 0;
|
|
buf[3] = 0;
|
|
}
|
|
|
|
insn = bfd_getb32 (buf);
|
|
/* 16-bit instruction. */
|
|
if (insn & 0x80000000)
|
|
{
|
|
print_insn16 (pc, info, (insn >> 16), NDS32_PARSE_INSN16);
|
|
return 2;
|
|
}
|
|
|
|
/* 32-bit instructions. */
|
|
if (size == 4)
|
|
print_insn32 (pc, info, insn, NDS32_PARSE_INSN32);
|
|
else
|
|
info->fprintf_func (info->stream,
|
|
_("insufficient data to decode instruction"));
|
|
return 4;
|
|
}
|
|
|
|
/* Ignore disassembling unnecessary name. */
|
|
|
|
static bfd_boolean
|
|
nds32_symbol_is_valid (asymbol *sym,
|
|
struct disassemble_info *info ATTRIBUTE_UNUSED)
|
|
{
|
|
const char *name;
|
|
|
|
if (sym == NULL)
|
|
return FALSE;
|
|
|
|
name = bfd_asymbol_name (sym);
|
|
|
|
/* Mapping symbol is invalid. */
|
|
if (name[0] == '$')
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
nds32_add_opcode_hash_table (unsigned indx)
|
|
{
|
|
opcode_t *opc;
|
|
|
|
opc = nds32_opcode_table[indx];
|
|
if (opc == NULL)
|
|
return;
|
|
|
|
while (opc->opcode != NULL)
|
|
{
|
|
opcode_t **slot;
|
|
|
|
slot = (opcode_t **) htab_find_slot
|
|
(opcode_htab, &opc->value, INSERT);
|
|
if (*slot == NULL)
|
|
{
|
|
/* This is the new one. */
|
|
*slot = opc;
|
|
}
|
|
else
|
|
{
|
|
opcode_t *tmp;
|
|
|
|
/* Already exists. Append to the list. */
|
|
tmp = *slot;
|
|
while (tmp->next)
|
|
tmp = tmp->next;
|
|
tmp->next = opc;
|
|
opc->next = NULL;
|
|
}
|
|
opc++;
|
|
}
|
|
}
|
|
|
|
void
|
|
disassemble_init_nds32 (struct disassemble_info *info)
|
|
{
|
|
static unsigned init_done = 0;
|
|
unsigned k;
|
|
|
|
/* Set up symbol checking function. */
|
|
info->symbol_is_valid = nds32_symbol_is_valid;
|
|
|
|
/* Only need to initialize once:
|
|
High level will call this function for every object file.
|
|
For example, when disassemble all members of a library. */
|
|
if (init_done)
|
|
return;
|
|
|
|
/* Setup main core. */
|
|
nds32_keyword_table[NDS32_MAIN_CORE] = &keywords[0];
|
|
nds32_opcode_table[NDS32_MAIN_CORE] = &nds32_opcodes[0];
|
|
nds32_field_table[NDS32_MAIN_CORE] = &operand_fields[0];
|
|
|
|
/* Build opcode table. */
|
|
opcode_htab = htab_create_alloc (1024, htab_hash_hash, htab_hash_eq,
|
|
NULL, xcalloc, free);
|
|
|
|
for (k = 0; k < NDS32_CORE_COUNT; k++)
|
|
{
|
|
/* Add op-codes. */
|
|
nds32_add_opcode_hash_table (k);
|
|
}
|
|
|
|
init_done = 1;
|
|
}
|
|
|
|
static int
|
|
is_mapping_symbol (struct disassemble_info *info, int n,
|
|
enum map_type *map_type)
|
|
{
|
|
const char *name = NULL;
|
|
|
|
/* Get symbol name. */
|
|
name = bfd_asymbol_name (info->symtab[n]);
|
|
|
|
if (name[1] == 'c')
|
|
{
|
|
*map_type = MAP_CODE;
|
|
return TRUE;
|
|
}
|
|
else if (name[1] == 'd' && name[2] == '0')
|
|
{
|
|
*map_type = MAP_DATA0;
|
|
return TRUE;
|
|
}
|
|
else if (name[1] == 'd' && name[2] == '1')
|
|
{
|
|
*map_type = MAP_DATA1;
|
|
return TRUE;
|
|
}
|
|
else if (name[1] == 'd' && name[2] == '2')
|
|
{
|
|
*map_type = MAP_DATA2;
|
|
return TRUE;
|
|
}
|
|
else if (name[1] == 'd' && name[2] == '3')
|
|
{
|
|
*map_type = MAP_DATA3;
|
|
return TRUE;
|
|
}
|
|
else if (name[1] == 'd' && name[2] == '4')
|
|
{
|
|
*map_type = MAP_DATA4;
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static int
|
|
get_mapping_symbol_type (struct disassemble_info *info, int n,
|
|
enum map_type *map_type)
|
|
{
|
|
/* If the symbol is in a different section, ignore it. */
|
|
if (info->section != NULL
|
|
&& info->section != info->symtab[n]->section)
|
|
return FALSE;
|
|
|
|
return is_mapping_symbol (info, n, map_type);
|
|
}
|