1 /* CPU support. 2 Copyright (C) 1998-2024 Free Software Foundation, Inc. 3 Contributed by Cygnus Solutions. 4 5 This file is part of GDB, the GNU debugger. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 /* This must come before any other includes. */ 21 #include "defs.h" 22 23 #include <stdlib.h> 24 25 #include "bfd.h" 26 27 #include "sim-main.h" 28 29 /* Allocate space for all cpus in the simulator. 30 Space for the cpu must currently exist prior to parsing ARGV. */ 31 /* ??? wip. better solution must wait. */ 32 33 SIM_RC 34 sim_cpu_alloc_all_extra (SIM_DESC sd, int ncpus, size_t extra_bytes) 35 { 36 int c; 37 38 /* TODO: This should be a command line option for users to control. */ 39 if (ncpus == 0) 40 ncpus = MAX_NR_PROCESSORS; 41 42 for (c = 0; c < ncpus; ++c) 43 STATE_CPU (sd, c) = sim_cpu_alloc_extra (sd, extra_bytes); 44 45 return SIM_RC_OK; 46 } 47 48 /* Allocate space for a cpu object. 49 EXTRA_BYTES is additional space to allocate for the sim_cpu struct. */ 50 51 sim_cpu * 52 sim_cpu_alloc_extra (SIM_DESC sd, size_t extra_bytes) 53 { 54 sim_cpu *cpu = zalloc (sizeof (*cpu)); 55 56 #ifndef CGEN_ARCH 57 # define cgen_cpu_max_extra_bytes(sd) 0 58 #endif 59 extra_bytes += cgen_cpu_max_extra_bytes (sd); 60 if (extra_bytes) 61 CPU_ARCH_DATA (cpu) = zalloc (extra_bytes); 62 63 return cpu; 64 } 65 66 /* Free all resources held by all cpus. */ 67 68 void 69 sim_cpu_free_all (SIM_DESC sd) 70 { 71 int c; 72 73 for (c = 0; c < MAX_NR_PROCESSORS; ++c) 74 if (STATE_CPU (sd, c)) 75 sim_cpu_free (STATE_CPU (sd, c)); 76 } 77 78 /* Free all resources used by CPU. */ 79 80 void 81 sim_cpu_free (sim_cpu *cpu) 82 { 83 free (CPU_ARCH_DATA (cpu)); 84 free (cpu); 85 } 86 87 /* PC utilities. */ 88 89 sim_cia 90 sim_pc_get (sim_cpu *cpu) 91 { 92 return (* CPU_PC_FETCH (cpu)) (cpu); 93 } 94 95 void 96 sim_pc_set (sim_cpu *cpu, sim_cia newval) 97 { 98 (* CPU_PC_STORE (cpu)) (cpu, newval); 99 } 100