/* Disassemble V850 instructions. Copyright (C) 1996 Free Software Foundation, Inc. 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <stdio.h> #include "ansidecl.h" #include "opcode/v850.h" #include "dis-asm.h" static const char *const v850_reg_names[] = { "r0", "r1", "r2", "sp", "gp", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", "ep", "r31" }; static const char *const v850_sreg_names[] = { "eipc", "eipsw", "fepc", "fepsw", "ecr", "psw", "sr6", "sr7", "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15", "sr16", "sr17", "sr18", "sr19", "sr20", "sr21", "sr22", "sr23", "sr24", "sr25", "sr26", "sr27", "sr28", "sr29", "sr30", "sr31" }; static const char *const v850_cc_names[] = { "v", "c/l", "z", "nh", "s/n", "t", "lt", "le", "nv", "nc/nl", "nz", "h", "ns/p", "sa", "ge", "gt" }; int print_insn_v850 (memaddr, info) bfd_vma memaddr; struct disassemble_info *info; { int status; bfd_byte buffer[4]; unsigned long insn; /* First figure out how big the opcode is. */ status = (*info->read_memory_func) (memaddr, buffer, 2, info); if (status != 0) { (*info->memory_error_func) (status, memaddr, info); return -1; } insn = bfd_getl16 (buffer); /* If this is a 4 byte insn, read 4 bytes of stuff. */ if ((insn & 0x0600) == 0x0600) { status = (*info->read_memory_func) (memaddr, buffer, 2, info); if (status != 0) { (*info->memory_error_func) (status, memaddr, info); return -1; } insn = bfd_getl32 (buffer); } disassemble (insn, info); /* Make sure we tell our caller how many bytes we consumed. */ if ((insn & 0x0600) == 0x0600) return 4; else return 2; } disassemble (insn, info) unsigned long insn; struct disassemble_info *info; { struct v850_opcode *op = (struct v850_opcode *)v850_opcodes; const struct v850_operand *operand; int match = 0; /* If this is a two byte insn, then mask off the high bits. */ if ((insn & 0x0600) != 0x0600) insn &= 0xffff; /* Find the opcode. */ while (op->name) { if ((op->mask & insn) == op->opcode) { const unsigned char *opindex_ptr; match = 1; (*info->fprintf_func) (info->stream, "%s\t", op->name); /* Now print the operands. */ for (opindex_ptr = op->operands; *opindex_ptr != 0; opindex_ptr++) { unsigned long value; operand = &v850_operands[*opindex_ptr]; if (operand->extract) value = (operand->extract) (insn, 0); else value = (insn >> operand->shift) & ((1 << operand->bits) - 1); if ((operand->flags & V850_OPERAND_SIGNED) != 0) value = ((signed long)(value << (32 - operand->bits)) >> (32 - operand->bits)); if ((operand->flags & V850_OPERAND_REG) != 0) (*info->fprintf_func) (info->stream, "%s", v850_reg_names[value]); else if ((operand->flags & V850_OPERAND_SRG) != 0) (*info->fprintf_func) (info->stream, "%s", v850_sreg_names[value]); else if ((operand->flags & V850_OPERAND_CC) != 0) (*info->fprintf_func) (info->stream, "%s", v850_cc_names[value]); else if ((operand->flags & V850_OPERAND_EP) != 0) (*info->fprintf_func) (info->stream, "ep"); else (*info->fprintf_func) (info->stream, "%d", value); } /* All done. */ break; } op++; } if (!match) { if ((insn & 0x0600) != 0x0600) (*info->fprintf_func) (info->stream, ".short\t0x%04x", insn); else (*info->fprintf_func) (info->stream, ".long\t0x%08x", insn); } }