X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=opcodes%2Favr-dis.c;h=23d5b3f6f2c834c96e0c1c00c140960895838e16;hb=301a9420d947da145884261ac31a7a52438c2894;hp=aea807e9255d630346574492bfa219db40cc98d0;hpb=af69206070ccb02c8253df2c9e995c5ee4921273;p=deliverable%2Fbinutils-gdb.git diff --git a/opcodes/avr-dis.c b/opcodes/avr-dis.c index aea807e925..23d5b3f6f2 100644 --- a/opcodes/avr-dis.c +++ b/opcodes/avr-dis.c @@ -1,28 +1,31 @@ /* Disassemble AVR instructions. - Copyright 1999, 2000, 2002, 2004, 2005, 2006 - Free Software Foundation, Inc. + Copyright (C) 1999-2020 Free Software Foundation, Inc. Contributed by Denis Chertykov - This program is free software; you can redistribute it and/or modify + This file is part of libopcodes. + + This library 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. + the Free Software Foundation; either version 3, 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. + It 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. */ + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ -#include #include "sysdep.h" -#include "dis-asm.h" +#include +#include "disassemble.h" #include "opintl.h" #include "libiberty.h" +#include "bfd_stdint.h" struct avr_opcodes_s { @@ -47,7 +50,7 @@ static const char * comment_start = "0x"; static int avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constraint, - char *buf, char *comment, int regs, int *sym, bfd_vma *sym_addr) + char *opcode_str, char *buf, char *comment, int regs, int *sym, bfd_vma *sym_addr) { int ok = 1; *sym = 0; @@ -60,7 +63,7 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra insn = (insn & 0xf) | ((insn & 0x0200) >> 5); /* Source register. */ else insn = (insn & 0x01f0) >> 4; /* Destination register. */ - + sprintf (buf, "r%d", insn); break; @@ -70,11 +73,11 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra else sprintf (buf, "r%d", 16 + ((insn & 0xf0) >> 4)); break; - + case 'w': sprintf (buf, "r%d", 24 + ((insn & 0x30) >> 3)); break; - + case 'a': if (regs) sprintf (buf, "r%d", 16 + (insn & 7)); @@ -106,7 +109,7 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra case 0x100e: xyz = "-X"; break; default: xyz = "??"; ok = 0; } - sprintf (buf, xyz); + strcpy (buf, xyz); if (AVR_UNDEF_P (insn)) sprintf (comment, _("undefined")); @@ -115,8 +118,19 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra case 'z': *buf++ = 'Z'; - if (insn & 0x1) - *buf++ = '+'; + + /* Check for post-increment. */ + char *s; + for (s = opcode_str; *s; ++s) + { + if (*s == '+') + { + if (insn & (1 << (15 - (s - opcode_str)))) + *buf++ = '+'; + break; + } + } + *buf = '\0'; if (AVR_UNDEF_P (insn)) sprintf (comment, _("undefined")); @@ -125,11 +139,11 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra case 'b': { unsigned int x; - + x = (insn & 7); x |= (insn >> 7) & (3 << 3); x |= (insn >> 8) & (1 << 5); - + if (insn & 0x8) *buf++ = 'Y'; else @@ -138,24 +152,24 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra sprintf (comment, "0x%02x", x); } break; - + case 'h': *sym = 1; *sym_addr = ((((insn & 1) | ((insn & 0x1f0) >> 3)) << 16) | insn2) * 2; /* See PR binutils/2454. Ideally we would like to display the hex value of the address only once, but this would mean recoding objdump_print_address() which would affect many targets. */ - sprintf (buf, "%#lx", (unsigned long) *sym_addr); - sprintf (comment, comment_start); + sprintf (buf, "%#lx", (unsigned long) *sym_addr); + strcpy (comment, comment_start); break; - + case 'L': { int rel_addr = (((insn & 0xfff) ^ 0x800) - 0x800) * 2; sprintf (buf, ".%+-8d", rel_addr); *sym = 1; *sym_addr = pc + 2 + rel_addr; - sprintf (comment, comment_start); + strcpy (comment, comment_start); } break; @@ -166,14 +180,33 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra sprintf (buf, ".%+-8d", rel_addr); *sym = 1; *sym_addr = pc + 2 + rel_addr; - sprintf (comment, comment_start); + strcpy (comment, comment_start); } break; case 'i': - sprintf (buf, "0x%04X", insn2); + { + unsigned int val = insn2 | 0x800000; + *sym = 1; + *sym_addr = val; + sprintf (buf, "0x%04X", insn2); + strcpy (comment, comment_start); + } + break; + + case 'j': + { + unsigned int val = ((insn & 0xf) | ((insn & 0x600) >> 5) + | ((insn & 0x100) >> 2)); + if ((insn & 0x100) == 0) + val |= 0x80; + *sym = 1; + *sym_addr = val | 0x800000; + sprintf (buf, "0x%02x", val); + strcpy (comment, comment_start); + } break; - + case 'M': sprintf (buf, "0x%02X", ((insn & 0xf00) >> 4) | (insn & 0xf)); sprintf (comment, "%d", ((insn & 0xf00) >> 4) | (insn & 0xf)); @@ -181,10 +214,11 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra case 'n': sprintf (buf, "??"); - fprintf (stderr, _("Internal disassembler error")); + /* xgettext:c-format */ + opcodes_error_handler (_("internal disassembler error")); ok = 0; break; - + case 'K': { unsigned int x; @@ -194,15 +228,15 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra sprintf (comment, "%d", x); } break; - + case 's': sprintf (buf, "%d", insn & 7); break; - + case 'S': sprintf (buf, "%d", (insn >> 4) & 7); break; - + case 'P': { unsigned int x; @@ -217,28 +251,36 @@ avr_operand (unsigned int insn, unsigned int insn2, unsigned int pc, int constra case 'p': { unsigned int x; - + x = (insn >> 3) & 0x1f; sprintf (buf, "0x%02x", x); sprintf (comment, "%d", x); } break; - + + case 'E': + sprintf (buf, "%d", (insn >> 4) & 15); + break; + case '?': *buf = '\0'; break; - + default: sprintf (buf, "??"); - fprintf (stderr, _("unknown constraint `%c'"), constraint); + /* xgettext:c-format */ + opcodes_error_handler (_("unknown constraint `%c'"), constraint); ok = 0; } return ok; } -static unsigned short -avrdis_opcode (bfd_vma addr, disassemble_info *info) +/* Read the opcode from ADDR. Return 0 in success and save opcode + in *INSN, otherwise, return -1. */ + +static int +avrdis_opcode (bfd_vma addr, disassemble_info *info, uint16_t *insn) { bfd_byte buffer[2]; int status; @@ -246,7 +288,10 @@ avrdis_opcode (bfd_vma addr, disassemble_info *info) status = info->read_memory_func (addr, buffer, 2, info); if (status == 0) - return bfd_getl16 (buffer); + { + *insn = bfd_getl16 (buffer); + return 0; + } info->memory_error_func (status, addr, info); return -1; @@ -256,7 +301,7 @@ avrdis_opcode (bfd_vma addr, disassemble_info *info) int print_insn_avr (bfd_vma addr, disassemble_info *info) { - unsigned int insn, insn2; + uint16_t insn, insn2; const struct avr_opcodes_s *opcode; static unsigned int *maskptr; void *stream = info->stream; @@ -281,7 +326,7 @@ print_insn_avr (bfd_vma addr, disassemble_info *info) comment_start = " "; nopcodes = sizeof (avr_opcodes) / sizeof (struct avr_opcodes_s); - + avr_bin_masks = xmalloc (nopcodes * sizeof (unsigned int)); for (opcode = avr_opcodes, maskptr = avr_bin_masks; @@ -291,7 +336,7 @@ print_insn_avr (bfd_vma addr, disassemble_info *info) char * s; unsigned int bin = 0; unsigned int mask = 0; - + for (s = opcode->opcode; *s; ++s) { bin <<= 1; @@ -307,14 +352,19 @@ print_insn_avr (bfd_vma addr, disassemble_info *info) initialized = 1; } - insn = avrdis_opcode (addr, info); - + if (avrdis_opcode (addr, info, &insn) != 0) + return -1; + for (opcode = avr_opcodes, maskptr = avr_bin_masks; opcode->name; opcode++, maskptr++) - if ((insn & *maskptr) == opcode->bin_opcode) - break; - + { + if ((opcode->isa == AVR_ISA_TINY) && (info->mach != bfd_mach_avrtiny)) + continue; + if ((insn & *maskptr) == opcode->bin_opcode) + break; + } + /* Special case: disassemble `ldd r,b+0' as `ld r,b', and `std b+0,r' as `st b,r' (next entry in the table). */ @@ -328,25 +378,27 @@ print_insn_avr (bfd_vma addr, disassemble_info *info) if (opcode->name) { - char *op = opcode->constraints; + char *constraints = opcode->constraints; + char *opcode_str = opcode->opcode; insn2 = 0; ok = 1; if (opcode->insn_size > 1) { - insn2 = avrdis_opcode (addr + 2, info); + if (avrdis_opcode (addr + 2, info, &insn2) != 0) + return -1; cmd_len = 4; } - if (*op && *op != '?') + if (*constraints && *constraints != '?') { - int regs = REGISTER_P (*op); + int regs = REGISTER_P (*constraints); - ok = avr_operand (insn, insn2, addr, *op, op1, comment1, 0, &sym_op1, &sym_addr1); + ok = avr_operand (insn, insn2, addr, *constraints, opcode_str, op1, comment1, 0, &sym_op1, &sym_addr1); - if (ok && *(++op) == ',') - ok = avr_operand (insn, insn2, addr, *(++op), op2, + if (ok && *(++constraints) == ',') + ok = avr_operand (insn, insn2, addr, *(++constraints), opcode_str, op2, *comment1 ? comment2 : comment1, regs, &sym_op2, &sym_addr2); } }