359 lines
9.9 KiB
C
359 lines
9.9 KiB
C
/* The common simulator framework for GDB, the GNU Debugger.
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Copyright 2002-2020 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_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 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) = (WITH_ENVIRONMENT != ALL_ENVIRONMENT ?
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WITH_ENVIRONMENT : USER_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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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, "HOST_BYTE_ORDER = %s\n",
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config_byte_order_to_a (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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