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[/] [or1k/] [trunk/] [gdb-5.3/] [sim/] [common/] [sim-model.c] - Rev 1775
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/* Model support. Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. Contributed by Cygnus Support. This file is part of GDB, the GNU debugger. 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, 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 "sim-main.h" #include "libiberty.h" #include "sim-options.h" #include "sim-io.h" #include "sim-assert.h" #include "bfd.h" static void model_set (sim_cpu *, const MODEL *); static DECLARE_OPTION_HANDLER (model_option_handler); static MODULE_INIT_FN sim_model_init; #define OPTION_MODEL (OPTION_START + 0) static const OPTION model_options[] = { { {"model", required_argument, NULL, OPTION_MODEL}, '\0', "MODEL", "Specify model to simulate", model_option_handler }, { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL } }; static SIM_RC model_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt, char *arg, int is_command) { switch (opt) { case OPTION_MODEL : { const MODEL *model = sim_model_lookup (arg); if (! model) { sim_io_eprintf (sd, "unknown model `%s'\n", arg); return SIM_RC_FAIL; } sim_model_set (sd, cpu, model); break; } } return SIM_RC_OK; } SIM_RC sim_model_install (SIM_DESC sd) { SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); sim_add_option_table (sd, NULL, model_options); sim_module_add_init_fn (sd, sim_model_init); return SIM_RC_OK; } /* Subroutine of sim_model_set to set the model for one cpu. */ static void model_set (sim_cpu *cpu, const MODEL *model) { CPU_MACH (cpu) = MODEL_MACH (model); CPU_MODEL (cpu) = model; (* MACH_INIT_CPU (MODEL_MACH (model))) (cpu); (* MODEL_INIT (model)) (cpu); } /* Set the current model of CPU to MODEL. If CPU is NULL, all cpus are set to MODEL. */ void sim_model_set (SIM_DESC sd, sim_cpu *cpu, const MODEL *model) { if (! cpu) { int c; for (c = 0; c < MAX_NR_PROCESSORS; ++c) if (STATE_CPU (sd, c)) model_set (STATE_CPU (sd, c), model); } else { model_set (cpu, model); } } /* Look up model named NAME. Result is pointer to MODEL entry or NULL if not found. */ const MODEL * sim_model_lookup (const char *name) { const MACH **machp; const MODEL *model; for (machp = & sim_machs[0]; *machp != NULL; ++machp) { for (model = MACH_MODELS (*machp); MODEL_NAME (model) != NULL; ++model) { if (strcmp (MODEL_NAME (model), name) == 0) return model; } } return NULL; } /* Look up machine named NAME. Result is pointer to MACH entry or NULL if not found. */ const MACH * sim_mach_lookup (const char *name) { const MACH **machp; for (machp = & sim_machs[0]; *machp != NULL; ++machp) { if (strcmp (MACH_NAME (*machp), name) == 0) return *machp; } return NULL; } /* Look up a machine via its bfd name. Result is pointer to MACH entry or NULL if not found. */ const MACH * sim_mach_lookup_bfd_name (const char *name) { const MACH **machp; for (machp = & sim_machs[0]; *machp != NULL; ++machp) { if (strcmp (MACH_BFD_NAME (*machp), name) == 0) return *machp; } return NULL; } /* Initialize model support. */ static SIM_RC sim_model_init (SIM_DESC sd) { SIM_CPU *cpu; /* If both cpu model and state architecture are set, ensure they're compatible. If only one is set, set the other. If neither are set, use the default model. STATE_ARCHITECTURE is the bfd_arch_info data for the selected "mach" (bfd terminology). */ /* Only check cpu 0. STATE_ARCHITECTURE is for that one only. */ /* ??? At present this only supports homogeneous multiprocessors. */ cpu = STATE_CPU (sd, 0); if (! STATE_ARCHITECTURE (sd) && ! CPU_MACH (cpu)) { /* Set the default model. */ const MODEL *model = sim_model_lookup (WITH_DEFAULT_MODEL); sim_model_set (sd, NULL, model); } if (STATE_ARCHITECTURE (sd) && CPU_MACH (cpu)) { if (strcmp (STATE_ARCHITECTURE (sd)->printable_name, MACH_BFD_NAME (CPU_MACH (cpu))) != 0) { sim_io_eprintf (sd, "invalid model `%s' for `%s'\n", MODEL_NAME (CPU_MODEL (cpu)), STATE_ARCHITECTURE (sd)->printable_name); return SIM_RC_FAIL; } } else if (STATE_ARCHITECTURE (sd)) { /* Use the default model for the selected machine. The default model is the first one in the list. */ const MACH *mach = sim_mach_lookup_bfd_name (STATE_ARCHITECTURE (sd)->printable_name); if (mach == NULL) { sim_io_eprintf (sd, "unsupported machine `%s'\n", STATE_ARCHITECTURE (sd)->printable_name); return SIM_RC_FAIL; } sim_model_set (sd, NULL, MACH_MODELS (mach)); } else { STATE_ARCHITECTURE (sd) = bfd_scan_arch (MACH_BFD_NAME (CPU_MACH (cpu))); } return SIM_RC_OK; }
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