aboutsummaryrefslogtreecommitdiff
path: root/opcodes/epiphany-dis.c
diff options
context:
space:
mode:
authorNick Clifton <nickc@redhat.com>2011-10-25 11:18:16 +0000
committerNick Clifton <nickc@redhat.com>2011-10-25 11:18:16 +0000
commitcfb8c0921c8ab3be8e5e48ec31e472742c2d4104 (patch)
tree168ae0f8c97ca806624efb39a945d600a0357dc4 /opcodes/epiphany-dis.c
parent0a394bfbada7defad3dff1fdcaa86e0e5a13c656 (diff)
downloadgdb-cfb8c0921c8ab3be8e5e48ec31e472742c2d4104.zip
gdb-cfb8c0921c8ab3be8e5e48ec31e472742c2d4104.tar.gz
gdb-cfb8c0921c8ab3be8e5e48ec31e472742c2d4104.tar.bz2
bfd:
* Makefile.am (ALL_MACHINES): Add cpu-epiphany.lo . (ALL_MACHINES_CFILES): Add cpu-epiphany.c . (BFD32_BACKENDS): Add elf32-epiphany.lo . (BFD32_BACKENDS_CFILES): Add elf32-epiphany.c . * Makefile.in, bfd-in2.h, configure, libbfd.h: Regenerate. * archures.c (bfd_arch_epiphany): Add. (bfd_mach_epiphany16, bfd_mach_epiphany32): Define. (bfd_epiphany_arch): Declare. (bfd_archures_list): Add &bfd_epiphany_arch. * config.bfd (epiphany-*-elf): New target case. * configure.in (bfd_elf32_epiphany_vec): New target vector case. * reloc.c (BFD_RELOC_EPIPHANY_SIMM8): New relocation. (BFD_RELOC_EPIPHANY_SIMM24, BFD_RELOC_EPIPHANY_HIGH): Likewise. (BFD_RELOC_EPIPHANY_LOW, BFD_RELOC_EPIPHANY_SIMM11): Likewise. (BFD_RELOC_EPIPHANY_IMM11, BFD_RELOC_EPIPHANY_IMM8): Likewise. * targets.c (bfd_elf32_epiphany_vec): Declare. (_bfd_target_vector): Add bfd_elf32_epiphany_vec. * po/SRC-POTFILES.in, po/bfd.pot: Regenerate. * cpu-epiphany.c, elf32-epiphany.c: New files. binutils: * readelf.c (include "elf/epiphany.h") (guess_is_rela, dump_relocation): Handle EM_ADAPTEVA_EPIPHANY. (get_machine_name, is_32bit_abs_reloc, is_32bit_pcrel_reloc): Likewise. (is_16bit_abs_reloc, is_none_reloc): Likewise. * po/binutils.pot: Regenerate. cpu: * cpu/epiphany.cpu, cpu/epiphany.opc: New files. gas: * NEWS: Mention addition of Adapteva Epiphany support. * config/tc-epiphany.c, config/tc-epiphany.h: New files. * Makefile.am (TARGET_CPU_CFILES): Add config/tc-epiphany.c . (TARGET_CPU_HFILES): Add config/tc-epiphany.h . * Makefile.in, configure, doc/Makefile.in, po/POTFILES.in: Regenerate. * configure.in: Also set using_cgen for epiphany. * configure.tgt: Handle epiphany. * doc/Makefile.am (CPU_DOCS): Add c-epiphany.texi . * doc/all.texi: Set EPIPHANY. * doc/as.texinfo: Add EPIPHANY-specific text. * doc/c-epiphany.texi: New file. * po/gas.pot: Regenerate. gas/testsuite: * gas/epiphany: New directory. include: * dis-asm.h (print_insn_epiphany): Declare. * elf/epiphany.h: New file. * elf/common.h (EM_ADAPTEVA_EPIPHANY): Define. ld: * NEWS: Mention addition of Adapteva Epiphany support. * Makefile.am (ALL_EMULATION_SOURCES): Add eelf32epiphany.c . (eelf32epiphany.c): New rule. * Makefile.in: Regenerate. * configure.tgt: Handle epiphany-*-elf. * po/ld.pot: Regenerate. * testsuite/ld-srec/srec.exp: xfail epiphany. * emulparams/elf32epiphany.sh: New file. opcodes: * Makefile.am (HFILES): Add epiphany-desc.h and epiphany-opc.h . (TARGET_LIBOPCODES_CFILES): Add epiphany-asm.c, epiphany-desc.c, epiphany-dis.c, epiphany-ibld.c and epiphany-opc.c . (CLEANFILES): Add stamp-epiphany. (EPIPHANY_DEPS): Set. Make CGEN-generated Epiphany files depend on it. (stamp-epiphany): New rule. * Makefile.in, configure, po/POTFILES.in, po/opcodes.pot: Regenerate. * configure.in: Handle bfd_epiphany_arch. * disassemble.c (ARCH_epiphany): Define. (disassembler): Handle bfd_arch_epiphany. * epiphany-asm.c, epiphany-desc.c, epiphany-desc.h: New files. * epiphany-dis.c, epiphany-ibld.c, epiphany-opc.c: Likewise. * epiphany-opc.h: Likewise.
Diffstat (limited to 'opcodes/epiphany-dis.c')
-rw-r--r--opcodes/epiphany-dis.c698
1 files changed, 698 insertions, 0 deletions
diff --git a/opcodes/epiphany-dis.c b/opcodes/epiphany-dis.c
new file mode 100644
index 0000000..bd86f46
--- /dev/null
+++ b/opcodes/epiphany-dis.c
@@ -0,0 +1,698 @@
+/* Disassembler interface for targets using CGEN. -*- C -*-
+ CGEN: Cpu tools GENerator
+
+ THIS FILE IS MACHINE GENERATED WITH CGEN.
+ - the resultant file is machine generated, cgen-dis.in isn't
+
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007,
+ 2008, 2010 Free Software Foundation, Inc.
+
+ 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 3, or (at your option)
+ any later version.
+
+ 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. */
+
+/* ??? Eventually more and more of this stuff can go to cpu-independent files.
+ Keep that in mind. */
+
+#include "sysdep.h"
+#include <stdio.h>
+#include "ansidecl.h"
+#include "dis-asm.h"
+#include "bfd.h"
+#include "symcat.h"
+#include "libiberty.h"
+#include "epiphany-desc.h"
+#include "epiphany-opc.h"
+#include "opintl.h"
+
+/* Default text to print if an instruction isn't recognized. */
+#define UNKNOWN_INSN_MSG _("*unknown*")
+
+static void print_normal
+ (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int);
+static void print_address
+ (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int) ATTRIBUTE_UNUSED;
+static void print_keyword
+ (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED;
+static void print_insn_normal
+ (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int);
+static int print_insn
+ (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, unsigned);
+static int default_print_insn
+ (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED;
+static int read_insn
+ (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *,
+ unsigned long *);
+
+/* -- disassembler routines inserted here. */
+
+/* -- dis.c */
+
+#define CGEN_PRINT_INSN epiphany_print_insn
+
+static int
+epiphany_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
+{
+ bfd_byte buf[CGEN_MAX_INSN_SIZE];
+ int buflen;
+ int status;
+
+ info->bytes_per_chunk = 2;
+
+ /* Attempt to read the base part of the insn. */
+ info->bytes_per_line = buflen = cd->base_insn_bitsize / 8;
+ status = (*info->read_memory_func) (pc, buf, buflen, info);
+
+ /* Try again with the minimum part, if min < base. */
+ if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
+ {
+ info->bytes_per_line = buflen = cd->min_insn_bitsize / 8;
+ status = (*info->read_memory_func) (pc, buf, buflen, info);
+ }
+
+ if (status != 0)
+ {
+ (*info->memory_error_func) (status, pc, info);
+ return -1;
+ }
+
+ return print_insn (cd, pc, info, buf, buflen);
+}
+
+
+static void
+print_postindex (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+ (*info->fprintf_func) (info->stream, value ? "-" : "+");
+}
+
+static void
+print_simm_not_reg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ print_address (cd, dis_info, value, attrs, pc, length);
+}
+
+static void
+print_uimm_not_reg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void * dis_info,
+ unsigned long value,
+ unsigned int attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *)dis_info;
+
+ if (value & 0x800)
+ (*info->fprintf_func) (info->stream, "-");
+
+ value &= 0x7ff;
+ print_address (cd, dis_info, value, attrs, pc, length);
+}
+
+
+/* -- */
+
+void epiphany_cgen_print_operand
+ (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
+
+/* Main entry point for printing operands.
+ XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
+ of dis-asm.h on cgen.h.
+
+ This function is basically just a big switch statement. Earlier versions
+ used tables to look up the function to use, but
+ - if the table contains both assembler and disassembler functions then
+ the disassembler contains much of the assembler and vice-versa,
+ - there's a lot of inlining possibilities as things grow,
+ - using a switch statement avoids the function call overhead.
+
+ This function could be moved into `print_insn_normal', but keeping it
+ separate makes clear the interface between `print_insn_normal' and each of
+ the handlers. */
+
+void
+epiphany_cgen_print_operand (CGEN_CPU_DESC cd,
+ int opindex,
+ void * xinfo,
+ CGEN_FIELDS *fields,
+ void const *attrs ATTRIBUTE_UNUSED,
+ bfd_vma pc,
+ int length)
+{
+ disassemble_info *info = (disassemble_info *) xinfo;
+
+ switch (opindex)
+ {
+ case EPIPHANY_OPERAND_DIRECTION :
+ print_postindex (cd, info, fields->f_addsubx, 0, pc, length);
+ break;
+ case EPIPHANY_OPERAND_DISP11 :
+ print_uimm_not_reg (cd, info, fields->f_disp11, 0|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
+ break;
+ case EPIPHANY_OPERAND_DISP3 :
+ print_normal (cd, info, fields->f_disp3, 0, pc, length);
+ break;
+ case EPIPHANY_OPERAND_DPMI :
+ print_postindex (cd, info, fields->f_subd, 0, pc, length);
+ break;
+ case EPIPHANY_OPERAND_FRD :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd, 0);
+ break;
+ case EPIPHANY_OPERAND_FRD6 :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_FRM :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm, 0);
+ break;
+ case EPIPHANY_OPERAND_FRM6 :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_FRN :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn, 0);
+ break;
+ case EPIPHANY_OPERAND_FRN6 :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_IMM16 :
+ print_address (cd, info, fields->f_imm16, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
+ break;
+ case EPIPHANY_OPERAND_IMM8 :
+ print_address (cd, info, fields->f_imm8, 0|(1<<CGEN_OPERAND_RELAX), pc, length);
+ break;
+ case EPIPHANY_OPERAND_RD :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd, 0);
+ break;
+ case EPIPHANY_OPERAND_RD6 :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_RM :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm, 0);
+ break;
+ case EPIPHANY_OPERAND_RM6 :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rm6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_RN :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn, 0);
+ break;
+ case EPIPHANY_OPERAND_RN6 :
+ print_keyword (cd, info, & epiphany_cgen_opval_gr_names, fields->f_rn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_SD :
+ print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sd, 0);
+ break;
+ case EPIPHANY_OPERAND_SD6 :
+ print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_SDDMA :
+ print_keyword (cd, info, & epiphany_cgen_opval_crdma_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_SDMEM :
+ print_keyword (cd, info, & epiphany_cgen_opval_crmem_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_SDMESH :
+ print_keyword (cd, info, & epiphany_cgen_opval_crmesh_names, fields->f_sd6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_SHIFT :
+ print_normal (cd, info, fields->f_shift, 0, pc, length);
+ break;
+ case EPIPHANY_OPERAND_SIMM11 :
+ print_simm_not_reg (cd, info, fields->f_sdisp11, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
+ break;
+ case EPIPHANY_OPERAND_SIMM24 :
+ print_address (cd, info, fields->f_simm24, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
+ break;
+ case EPIPHANY_OPERAND_SIMM3 :
+ print_simm_not_reg (cd, info, fields->f_sdisp3, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELAX), pc, length);
+ break;
+ case EPIPHANY_OPERAND_SIMM8 :
+ print_address (cd, info, fields->f_simm8, 0|(1<<CGEN_OPERAND_RELAX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
+ break;
+ case EPIPHANY_OPERAND_SN :
+ print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sn, 0);
+ break;
+ case EPIPHANY_OPERAND_SN6 :
+ print_keyword (cd, info, & epiphany_cgen_opval_cr_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_SNDMA :
+ print_keyword (cd, info, & epiphany_cgen_opval_crdma_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_SNMEM :
+ print_keyword (cd, info, & epiphany_cgen_opval_crmem_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_SNMESH :
+ print_keyword (cd, info, & epiphany_cgen_opval_crmesh_names, fields->f_sn6, 0|(1<<CGEN_OPERAND_VIRTUAL));
+ break;
+ case EPIPHANY_OPERAND_SWI_NUM :
+ print_uimm_not_reg (cd, info, fields->f_trap_num, 0, pc, length);
+ break;
+ case EPIPHANY_OPERAND_TRAPNUM6 :
+ print_normal (cd, info, fields->f_trap_num, 0, pc, length);
+ break;
+
+ default :
+ /* xgettext:c-format */
+ fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
+ opindex);
+ abort ();
+ }
+}
+
+cgen_print_fn * const epiphany_cgen_print_handlers[] =
+{
+ print_insn_normal,
+};
+
+
+void
+epiphany_cgen_init_dis (CGEN_CPU_DESC cd)
+{
+ epiphany_cgen_init_opcode_table (cd);
+ epiphany_cgen_init_ibld_table (cd);
+ cd->print_handlers = & epiphany_cgen_print_handlers[0];
+ cd->print_operand = epiphany_cgen_print_operand;
+}
+
+
+/* Default print handler. */
+
+static void
+print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void *dis_info,
+ long value,
+ unsigned int attrs,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+
+ /* Print the operand as directed by the attributes. */
+ if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
+ ; /* nothing to do */
+ else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
+ (*info->fprintf_func) (info->stream, "%ld", value);
+ else
+ (*info->fprintf_func) (info->stream, "0x%lx", value);
+}
+
+/* Default address handler. */
+
+static void
+print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void *dis_info,
+ bfd_vma value,
+ unsigned int attrs,
+ bfd_vma pc ATTRIBUTE_UNUSED,
+ int length ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+
+ /* Print the operand as directed by the attributes. */
+ if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
+ ; /* Nothing to do. */
+ else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
+ (*info->print_address_func) (value, info);
+ else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
+ (*info->print_address_func) (value, info);
+ else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
+ (*info->fprintf_func) (info->stream, "%ld", (long) value);
+ else
+ (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
+}
+
+/* Keyword print handler. */
+
+static void
+print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ void *dis_info,
+ CGEN_KEYWORD *keyword_table,
+ long value,
+ unsigned int attrs ATTRIBUTE_UNUSED)
+{
+ disassemble_info *info = (disassemble_info *) dis_info;
+ const CGEN_KEYWORD_ENTRY *ke;
+
+ ke = cgen_keyword_lookup_value (keyword_table, value);
+ if (ke != NULL)
+ (*info->fprintf_func) (info->stream, "%s", ke->name);
+ else
+ (*info->fprintf_func) (info->stream, "???");
+}
+
+/* Default insn printer.
+
+ DIS_INFO is defined as `void *' so the disassembler needn't know anything
+ about disassemble_info. */
+
+static void
+print_insn_normal (CGEN_CPU_DESC cd,
+ void *dis_info,
+ const CGEN_INSN *insn,
+ CGEN_FIELDS *fields,
+ bfd_vma pc,
+ int length)
+{
+ const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
+ disassemble_info *info = (disassemble_info *) dis_info;
+ const CGEN_SYNTAX_CHAR_TYPE *syn;
+
+ CGEN_INIT_PRINT (cd);
+
+ for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
+ {
+ if (CGEN_SYNTAX_MNEMONIC_P (*syn))
+ {
+ (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
+ continue;
+ }
+ if (CGEN_SYNTAX_CHAR_P (*syn))
+ {
+ (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
+ continue;
+ }
+
+ /* We have an operand. */
+ epiphany_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
+ fields, CGEN_INSN_ATTRS (insn), pc, length);
+ }
+}
+
+/* Subroutine of print_insn. Reads an insn into the given buffers and updates
+ the extract info.
+ Returns 0 if all is well, non-zero otherwise. */
+
+static int
+read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ bfd_vma pc,
+ disassemble_info *info,
+ bfd_byte *buf,
+ int buflen,
+ CGEN_EXTRACT_INFO *ex_info,
+ unsigned long *insn_value)
+{
+ int status = (*info->read_memory_func) (pc, buf, buflen, info);
+
+ if (status != 0)
+ {
+ (*info->memory_error_func) (status, pc, info);
+ return -1;
+ }
+
+ ex_info->dis_info = info;
+ ex_info->valid = (1 << buflen) - 1;
+ ex_info->insn_bytes = buf;
+
+ *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
+ return 0;
+}
+
+/* Utility to print an insn.
+ BUF is the base part of the insn, target byte order, BUFLEN bytes long.
+ The result is the size of the insn in bytes or zero for an unknown insn
+ or -1 if an error occurs fetching data (memory_error_func will have
+ been called). */
+
+static int
+print_insn (CGEN_CPU_DESC cd,
+ bfd_vma pc,
+ disassemble_info *info,
+ bfd_byte *buf,
+ unsigned int buflen)
+{
+ CGEN_INSN_INT insn_value;
+ const CGEN_INSN_LIST *insn_list;
+ CGEN_EXTRACT_INFO ex_info;
+ int basesize;
+
+ /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
+ basesize = cd->base_insn_bitsize < buflen * 8 ?
+ cd->base_insn_bitsize : buflen * 8;
+ insn_value = cgen_get_insn_value (cd, buf, basesize);
+
+
+ /* Fill in ex_info fields like read_insn would. Don't actually call
+ read_insn, since the incoming buffer is already read (and possibly
+ modified a la m32r). */
+ ex_info.valid = (1 << buflen) - 1;
+ ex_info.dis_info = info;
+ ex_info.insn_bytes = buf;
+
+ /* The instructions are stored in hash lists.
+ Pick the first one and keep trying until we find the right one. */
+
+ insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
+ while (insn_list != NULL)
+ {
+ const CGEN_INSN *insn = insn_list->insn;
+ CGEN_FIELDS fields;
+ int length;
+ unsigned long insn_value_cropped;
+
+#ifdef CGEN_VALIDATE_INSN_SUPPORTED
+ /* Not needed as insn shouldn't be in hash lists if not supported. */
+ /* Supported by this cpu? */
+ if (! epiphany_cgen_insn_supported (cd, insn))
+ {
+ insn_list = CGEN_DIS_NEXT_INSN (insn_list);
+ continue;
+ }
+#endif
+
+ /* Basic bit mask must be correct. */
+ /* ??? May wish to allow target to defer this check until the extract
+ handler. */
+
+ /* Base size may exceed this instruction's size. Extract the
+ relevant part from the buffer. */
+ if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
+ (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
+ insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
+ info->endian == BFD_ENDIAN_BIG);
+ else
+ insn_value_cropped = insn_value;
+
+ if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
+ == CGEN_INSN_BASE_VALUE (insn))
+ {
+ /* Printing is handled in two passes. The first pass parses the
+ machine insn and extracts the fields. The second pass prints
+ them. */
+
+ /* Make sure the entire insn is loaded into insn_value, if it
+ can fit. */
+ if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
+ (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
+ {
+ unsigned long full_insn_value;
+ int rc = read_insn (cd, pc, info, buf,
+ CGEN_INSN_BITSIZE (insn) / 8,
+ & ex_info, & full_insn_value);
+ if (rc != 0)
+ return rc;
+ length = CGEN_EXTRACT_FN (cd, insn)
+ (cd, insn, &ex_info, full_insn_value, &fields, pc);
+ }
+ else
+ length = CGEN_EXTRACT_FN (cd, insn)
+ (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
+
+ /* Length < 0 -> error. */
+ if (length < 0)
+ return length;
+ if (length > 0)
+ {
+ CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
+ /* Length is in bits, result is in bytes. */
+ return length / 8;
+ }
+ }
+
+ insn_list = CGEN_DIS_NEXT_INSN (insn_list);
+ }
+
+ return 0;
+}
+
+/* Default value for CGEN_PRINT_INSN.
+ The result is the size of the insn in bytes or zero for an unknown insn
+ or -1 if an error occured fetching bytes. */
+
+#ifndef CGEN_PRINT_INSN
+#define CGEN_PRINT_INSN default_print_insn
+#endif
+
+static int
+default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
+{
+ bfd_byte buf[CGEN_MAX_INSN_SIZE];
+ int buflen;
+ int status;
+
+ /* Attempt to read the base part of the insn. */
+ buflen = cd->base_insn_bitsize / 8;
+ status = (*info->read_memory_func) (pc, buf, buflen, info);
+
+ /* Try again with the minimum part, if min < base. */
+ if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
+ {
+ buflen = cd->min_insn_bitsize / 8;
+ status = (*info->read_memory_func) (pc, buf, buflen, info);
+ }
+
+ if (status != 0)
+ {
+ (*info->memory_error_func) (status, pc, info);
+ return -1;
+ }
+
+ return print_insn (cd, pc, info, buf, buflen);
+}
+
+/* Main entry point.
+ Print one instruction from PC on INFO->STREAM.
+ Return the size of the instruction (in bytes). */
+
+typedef struct cpu_desc_list
+{
+ struct cpu_desc_list *next;
+ CGEN_BITSET *isa;
+ int mach;
+ int endian;
+ CGEN_CPU_DESC cd;
+} cpu_desc_list;
+
+int
+print_insn_epiphany (bfd_vma pc, disassemble_info *info)
+{
+ static cpu_desc_list *cd_list = 0;
+ cpu_desc_list *cl = 0;
+ static CGEN_CPU_DESC cd = 0;
+ static CGEN_BITSET *prev_isa;
+ static int prev_mach;
+ static int prev_endian;
+ int length;
+ CGEN_BITSET *isa;
+ int mach;
+ int endian = (info->endian == BFD_ENDIAN_BIG
+ ? CGEN_ENDIAN_BIG
+ : CGEN_ENDIAN_LITTLE);
+ enum bfd_architecture arch;
+
+ /* ??? gdb will set mach but leave the architecture as "unknown" */
+#ifndef CGEN_BFD_ARCH
+#define CGEN_BFD_ARCH bfd_arch_epiphany
+#endif
+ arch = info->arch;
+ if (arch == bfd_arch_unknown)
+ arch = CGEN_BFD_ARCH;
+
+ /* There's no standard way to compute the machine or isa number
+ so we leave it to the target. */
+#ifdef CGEN_COMPUTE_MACH
+ mach = CGEN_COMPUTE_MACH (info);
+#else
+ mach = info->mach;
+#endif
+
+#ifdef CGEN_COMPUTE_ISA
+ {
+ static CGEN_BITSET *permanent_isa;
+
+ if (!permanent_isa)
+ permanent_isa = cgen_bitset_create (MAX_ISAS);
+ isa = permanent_isa;
+ cgen_bitset_clear (isa);
+ cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
+ }
+#else
+ isa = info->insn_sets;
+#endif
+
+ /* If we've switched cpu's, try to find a handle we've used before */
+ if (cd
+ && (cgen_bitset_compare (isa, prev_isa) != 0
+ || mach != prev_mach
+ || endian != prev_endian))
+ {
+ cd = 0;
+ for (cl = cd_list; cl; cl = cl->next)
+ {
+ if (cgen_bitset_compare (cl->isa, isa) == 0 &&
+ cl->mach == mach &&
+ cl->endian == endian)
+ {
+ cd = cl->cd;
+ prev_isa = cd->isas;
+ break;
+ }
+ }
+ }
+
+ /* If we haven't initialized yet, initialize the opcode table. */
+ if (! cd)
+ {
+ const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
+ const char *mach_name;
+
+ if (!arch_type)
+ abort ();
+ mach_name = arch_type->printable_name;
+
+ prev_isa = cgen_bitset_copy (isa);
+ prev_mach = mach;
+ prev_endian = endian;
+ cd = epiphany_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
+ CGEN_CPU_OPEN_BFDMACH, mach_name,
+ CGEN_CPU_OPEN_ENDIAN, prev_endian,
+ CGEN_CPU_OPEN_END);
+ if (!cd)
+ abort ();
+
+ /* Save this away for future reference. */
+ cl = xmalloc (sizeof (struct cpu_desc_list));
+ cl->cd = cd;
+ cl->isa = prev_isa;
+ cl->mach = mach;
+ cl->endian = endian;
+ cl->next = cd_list;
+ cd_list = cl;
+
+ epiphany_cgen_init_dis (cd);
+ }
+
+ /* We try to have as much common code as possible.
+ But at this point some targets need to take over. */
+ /* ??? Some targets may need a hook elsewhere. Try to avoid this,
+ but if not possible try to move this hook elsewhere rather than
+ have two hooks. */
+ length = CGEN_PRINT_INSN (cd, pc, info);
+ if (length > 0)
+ return length;
+ if (length < 0)
+ return -1;
+
+ (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
+ return cd->default_insn_bitsize / 8;
+}