mirror of
https://github.com/bminor/binutils-gdb.git
synced 2025-12-15 20:08:23 +00:00
1ac72f0659
Rather than re-invent endian defines, as well as maintain our own list of OS & arch-specific includes, punt all that logic in favor of the bfd ones already set up and maintained elsewhere. We already rely on the bfd library, so leveraging the endian aspect should be fine.
383 lines
11 KiB
C
383 lines
11 KiB
C
/* The common simulator framework for GDB, the GNU Debugger.
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Copyright 2002-2016 Free Software Foundation, Inc.
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Contributed by Andrew Cagney and Red Hat.
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This file is part of GDB.
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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, see <http://www.gnu.org/licenses/>. */
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#include "sim-main.h"
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#include "sim-assert.h"
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#include "bfd.h"
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enum bfd_endian current_host_byte_order = BFD_ENDIAN_UNKNOWN;
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enum bfd_endian current_target_byte_order = BFD_ENDIAN_UNKNOWN;
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int current_stdio;
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enum sim_alignments current_alignment;
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#if defined (WITH_FLOATING_POINT)
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int current_floating_point;
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#endif
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/* map a byte order onto a textual string */
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static const char *
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config_byte_order_to_a (enum bfd_endian byte_order)
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{
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switch (byte_order)
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{
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case BFD_ENDIAN_LITTLE:
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return "LITTLE_ENDIAN";
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case BFD_ENDIAN_BIG:
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return "BIG_ENDIAN";
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case BFD_ENDIAN_UNKNOWN:
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return "UNKNOWN_ENDIAN";
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}
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return "UNKNOWN";
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}
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static const char *
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config_stdio_to_a (int stdio)
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{
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switch (stdio)
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{
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case DONT_USE_STDIO:
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return "DONT_USE_STDIO";
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case DO_USE_STDIO:
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return "DO_USE_STDIO";
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case 0:
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return "0";
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}
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return "UNKNOWN";
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}
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static const char *
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config_environment_to_a (enum sim_environment environment)
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{
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switch (environment)
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{
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case ALL_ENVIRONMENT:
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return "ALL_ENVIRONMENT";
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case USER_ENVIRONMENT:
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return "USER_ENVIRONMENT";
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case VIRTUAL_ENVIRONMENT:
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return "VIRTUAL_ENVIRONMENT";
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case OPERATING_ENVIRONMENT:
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return "OPERATING_ENVIRONMENT";
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}
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return "UNKNOWN";
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}
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static const char *
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config_alignment_to_a (enum sim_alignments alignment)
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{
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switch (alignment)
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{
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case MIXED_ALIGNMENT:
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return "MIXED_ALIGNMENT";
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case NONSTRICT_ALIGNMENT:
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return "NONSTRICT_ALIGNMENT";
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case STRICT_ALIGNMENT:
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return "STRICT_ALIGNMENT";
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case FORCED_ALIGNMENT:
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return "FORCED_ALIGNMENT";
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}
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return "UNKNOWN";
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}
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#if defined (WITH_FLOATING_POINT)
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static const char *
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config_floating_point_to_a (int floating_point)
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{
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switch (floating_point)
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{
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case SOFT_FLOATING_POINT:
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return "SOFT_FLOATING_POINT";
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case HARD_FLOATING_POINT:
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return "HARD_FLOATING_POINT";
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case 0:
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return "0";
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}
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return "UNKNOWN";
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}
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#endif
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/* Set the default environment, prior to parsing argv. */
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void
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sim_config_default (SIM_DESC sd)
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{
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/* Set the current environment to ALL_ENVIRONMENT to indicate none has been
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selected yet. This is so that after parsing argv, we know whether the
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environment was explicitly specified or not. */
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STATE_ENVIRONMENT (sd) = ALL_ENVIRONMENT;
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}
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/* Complete and verify the simulation environment. */
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SIM_RC
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sim_config (SIM_DESC sd)
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{
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enum bfd_endian prefered_target_byte_order;
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SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
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/* extract all relevant information */
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if (STATE_PROG_BFD (sd) == NULL
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/* If we have a binary input file (presumably with specified
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"--architecture"), it'll have no endianness. */
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|| (!bfd_little_endian (STATE_PROG_BFD (sd))
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&& !bfd_big_endian (STATE_PROG_BFD (sd))))
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prefered_target_byte_order = BFD_ENDIAN_UNKNOWN;
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else
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prefered_target_byte_order = (bfd_little_endian (STATE_PROG_BFD (sd))
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? BFD_ENDIAN_LITTLE
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: BFD_ENDIAN_BIG);
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/* set the host byte order */
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current_host_byte_order = 1;
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if (*(char*)(¤t_host_byte_order))
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current_host_byte_order = BFD_ENDIAN_LITTLE;
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else
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current_host_byte_order = BFD_ENDIAN_BIG;
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/* verify the host byte order */
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if (CURRENT_HOST_BYTE_ORDER != current_host_byte_order)
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{
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sim_io_eprintf (sd, "host (%s) and configured (%s) byte order in conflict",
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config_byte_order_to_a (current_host_byte_order),
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config_byte_order_to_a (CURRENT_HOST_BYTE_ORDER));
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return SIM_RC_FAIL;
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}
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/* set the target byte order */
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#if (WITH_TREE_PROPERTIES)
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if (current_target_byte_order == BFD_ENDIAN_UNKNOWN)
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current_target_byte_order
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= (tree_find_boolean_property (root, "/options/little-endian?")
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? BFD_ENDIAN_LITTLE
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: BFD_ENDIAN_BIG);
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#endif
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if (current_target_byte_order == BFD_ENDIAN_UNKNOWN
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&& prefered_target_byte_order != BFD_ENDIAN_UNKNOWN)
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current_target_byte_order = prefered_target_byte_order;
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if (current_target_byte_order == BFD_ENDIAN_UNKNOWN)
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current_target_byte_order = WITH_TARGET_BYTE_ORDER;
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if (current_target_byte_order == BFD_ENDIAN_UNKNOWN)
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current_target_byte_order = WITH_DEFAULT_TARGET_BYTE_ORDER;
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/* verify the target byte order */
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if (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_UNKNOWN)
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{
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sim_io_eprintf (sd, "Target byte order unspecified\n");
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return SIM_RC_FAIL;
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}
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if (CURRENT_TARGET_BYTE_ORDER != current_target_byte_order)
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sim_io_eprintf (sd, "Target (%s) and configured (%s) byte order in conflict\n",
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config_byte_order_to_a (current_target_byte_order),
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config_byte_order_to_a (CURRENT_TARGET_BYTE_ORDER));
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if (prefered_target_byte_order != BFD_ENDIAN_UNKNOWN
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&& CURRENT_TARGET_BYTE_ORDER != prefered_target_byte_order)
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sim_io_eprintf (sd, "Target (%s) and specified (%s) byte order in conflict\n",
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config_byte_order_to_a (CURRENT_TARGET_BYTE_ORDER),
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config_byte_order_to_a (prefered_target_byte_order));
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/* set the stdio */
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if (current_stdio == 0)
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current_stdio = WITH_STDIO;
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if (current_stdio == 0)
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current_stdio = DO_USE_STDIO;
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/* verify the stdio */
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if (CURRENT_STDIO == 0)
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{
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sim_io_eprintf (sd, "Target standard IO unspecified\n");
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return SIM_RC_FAIL;
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}
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if (CURRENT_STDIO != current_stdio)
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{
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sim_io_eprintf (sd, "Target (%s) and configured (%s) standard IO in conflict\n",
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config_stdio_to_a (CURRENT_STDIO),
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config_stdio_to_a (current_stdio));
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return SIM_RC_FAIL;
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}
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/* check the value of MSB */
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if (WITH_TARGET_WORD_MSB != 0
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&& WITH_TARGET_WORD_MSB != (WITH_TARGET_WORD_BITSIZE - 1))
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{
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sim_io_eprintf (sd, "Target bitsize (%d) contradicts target most significant bit (%d)\n",
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WITH_TARGET_WORD_BITSIZE, WITH_TARGET_WORD_MSB);
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return SIM_RC_FAIL;
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}
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/* set the environment */
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#if (WITH_TREE_PROPERTIES)
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if (STATE_ENVIRONMENT (sd) == ALL_ENVIRONMENT)
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{
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const char *env =
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tree_find_string_property (root, "/openprom/options/env");
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STATE_ENVIRONMENT (sd) = ((strcmp (env, "user") == 0
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|| strcmp (env, "uea") == 0)
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? USER_ENVIRONMENT
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: (strcmp (env, "virtual") == 0
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|| strcmp (env, "vea") == 0)
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? VIRTUAL_ENVIRONMENT
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: (strcmp (env, "operating") == 0
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|| strcmp (env, "oea") == 0)
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? OPERATING_ENVIRONMENT
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: ALL_ENVIRONMENT);
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}
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#endif
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if (STATE_ENVIRONMENT (sd) == ALL_ENVIRONMENT)
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STATE_ENVIRONMENT (sd) = DEFAULT_ENVIRONMENT;
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/* set the alignment */
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#if (WITH_TREE_PROPERTIES)
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if (current_alignment == 0)
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current_alignment =
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(tree_find_boolean_property (root, "/openprom/options/strict-alignment?")
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? STRICT_ALIGNMENT
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: NONSTRICT_ALIGNMENT);
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#endif
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if (current_alignment == 0)
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current_alignment = WITH_ALIGNMENT;
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if (current_alignment == 0)
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current_alignment = WITH_DEFAULT_ALIGNMENT;
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/* verify the alignment */
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if (CURRENT_ALIGNMENT == 0)
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{
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sim_io_eprintf (sd, "Target alignment unspecified\n");
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return SIM_RC_FAIL;
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}
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if (CURRENT_ALIGNMENT != current_alignment)
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{
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sim_io_eprintf (sd, "Target (%s) and configured (%s) alignment in conflict\n",
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config_alignment_to_a (CURRENT_ALIGNMENT),
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config_alignment_to_a (current_alignment));
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return SIM_RC_FAIL;
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}
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#if defined (WITH_FLOATING_POINT)
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/* set the floating point */
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if (current_floating_point == 0)
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current_floating_point = WITH_FLOATING_POINT;
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/* verify the floating point */
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if (CURRENT_FLOATING_POINT == 0)
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{
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sim_io_eprintf (sd, "Target floating-point unspecified\n");
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return SIM_RC_FAIL;
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}
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if (CURRENT_FLOATING_POINT != current_floating_point)
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{
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sim_io_eprintf (sd, "Target (%s) and configured (%s) floating-point in conflict\n",
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config_alignment_to_a (CURRENT_FLOATING_POINT),
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config_alignment_to_a (current_floating_point));
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return SIM_RC_FAIL;
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}
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#endif
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return SIM_RC_OK;
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}
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void
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print_sim_config (SIM_DESC sd)
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{
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#if defined (__GNUC__) && defined (__VERSION__)
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sim_io_printf (sd, "Compiled by GCC %s on %s %s\n",
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__VERSION__, __DATE__, __TIME__);
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#else
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sim_io_printf (sd, "Compiled on %s %s\n", __DATE__, __TIME__);
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#endif
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sim_io_printf (sd, "WITH_TARGET_BYTE_ORDER = %s\n",
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config_byte_order_to_a (WITH_TARGET_BYTE_ORDER));
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sim_io_printf (sd, "WITH_DEFAULT_TARGET_BYTE_ORDER = %s\n",
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config_byte_order_to_a (WITH_DEFAULT_TARGET_BYTE_ORDER));
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sim_io_printf (sd, "WITH_HOST_BYTE_ORDER = %s\n",
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config_byte_order_to_a (WITH_HOST_BYTE_ORDER));
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sim_io_printf (sd, "WITH_STDIO = %s\n",
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config_stdio_to_a (WITH_STDIO));
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sim_io_printf (sd, "WITH_TARGET_WORD_MSB = %d\n",
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WITH_TARGET_WORD_MSB);
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sim_io_printf (sd, "WITH_TARGET_WORD_BITSIZE = %d\n",
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WITH_TARGET_WORD_BITSIZE);
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sim_io_printf (sd, "WITH_TARGET_ADDRESS_BITSIZE = %d\n",
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WITH_TARGET_ADDRESS_BITSIZE);
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sim_io_printf (sd, "WITH_TARGET_CELL_BITSIZE = %d\n",
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WITH_TARGET_CELL_BITSIZE);
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sim_io_printf (sd, "WITH_TARGET_FLOATING_POINT_BITSIZE = %d\n",
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WITH_TARGET_FLOATING_POINT_BITSIZE);
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sim_io_printf (sd, "WITH_ENVIRONMENT = %s\n",
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config_environment_to_a (WITH_ENVIRONMENT));
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sim_io_printf (sd, "WITH_ALIGNMENT = %s\n",
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config_alignment_to_a (WITH_ALIGNMENT));
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#if defined (WITH_DEFAULT_ALIGNMENT)
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sim_io_printf (sd, "WITH_DEFAULT_ALIGNMENT = %s\n",
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config_alignment_to_a (WITH_DEFAULT_ALIGNMENT));
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#endif
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#if defined (WITH_XOR_ENDIAN)
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sim_io_printf (sd, "WITH_XOR_ENDIAN = %d\n", WITH_XOR_ENDIAN);
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#endif
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#if defined (WITH_FLOATING_POINT)
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sim_io_printf (sd, "WITH_FLOATING_POINT = %s\n",
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config_floating_point_to_a (WITH_FLOATING_POINT));
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#endif
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#if defined (WITH_SMP)
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sim_io_printf (sd, "WITH_SMP = %d\n", WITH_SMP);
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#endif
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#if defined (WITH_RESERVED_BITS)
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sim_io_printf (sd, "WITH_RESERVED_BITS = %d\n", WITH_RESERVED_BITS);
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#endif
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#if defined (WITH_PROFILE)
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sim_io_printf (sd, "WITH_PROFILE = %d\n", WITH_PROFILE);
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#endif
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}
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