summaryrefslogtreecommitdiff
path: root/sim/ppc/psim.c
diff options
context:
space:
mode:
Diffstat (limited to 'sim/ppc/psim.c')
-rw-r--r--sim/ppc/psim.c1099
1 files changed, 0 insertions, 1099 deletions
diff --git a/sim/ppc/psim.c b/sim/ppc/psim.c
deleted file mode 100644
index 20d843b80bf..00000000000
--- a/sim/ppc/psim.c
+++ /dev/null
@@ -1,1099 +0,0 @@
-/* This file is part of the program psim.
-
- Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
-
- 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 of the License, 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.
-
- */
-
-
-#ifndef _PSIM_C_
-#define _PSIM_C_
-
-#include "cpu.h" /* includes psim.h */
-#include "idecode.h"
-#include "options.h"
-
-#include "tree.h"
-
-#include <signal.h>
-
-#include <stdio.h>
-#include <ctype.h>
-
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-
-#include <setjmp.h>
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#else
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-#endif
-
-
-#include "bfd.h"
-
-
-/* system structure, actual size of processor array determined at
- runtime */
-
-struct _psim {
- event_queue *events;
- device *devices;
- mon *monitor;
- os_emul *os_emulation;
- core *memory;
-
- /* escape routine for inner functions */
- void *path_to_halt;
- void *path_to_restart;
-
- /* status from last halt */
- psim_status halt_status;
-
- /* the processors proper */
- int nr_cpus;
- int last_cpu; /* CPU that last (tried to) execute an instruction */
- cpu *processors[MAX_NR_PROCESSORS];
-};
-
-
-int current_target_byte_order;
-int current_host_byte_order;
-int current_environment;
-int current_alignment;
-int current_floating_point;
-int current_model_issue = MODEL_ISSUE_IGNORE;
-int current_stdio = DO_USE_STDIO;
-model_enum current_model = WITH_DEFAULT_MODEL;
-
-
-/* create the device tree */
-
-INLINE_PSIM\
-(device *)
-psim_tree(void)
-{
- device *root = tree_parse(NULL, "core");
- tree_parse(root, "/aliases");
- tree_parse(root, "/options");
- tree_parse(root, "/chosen");
- tree_parse(root, "/packages");
- tree_parse(root, "/cpus");
- tree_parse(root, "/openprom");
- tree_parse(root, "/openprom/init");
- tree_parse(root, "/openprom/trace");
- tree_parse(root, "/openprom/options");
- return root;
-}
-
-STATIC_INLINE_PSIM\
-(char *)
-find_arg(char *err_msg,
- int *ptr_to_argp,
- char **argv)
-{
- *ptr_to_argp += 1;
- if (argv[*ptr_to_argp] == NULL)
- error(err_msg);
- return argv[*ptr_to_argp];
-}
-
-INLINE_PSIM\
-(void)
-psim_usage(int verbose)
-{
- printf_filtered("Usage:\n");
- printf_filtered("\n");
- printf_filtered("\tpsim [ <psim-option> ... ] <image> [ <image-arg> ... ]\n");
- printf_filtered("\n");
- printf_filtered("Where\n");
- printf_filtered("\n");
- printf_filtered("\t<image> Name of the PowerPC program to run.\n");
- if (verbose) {
- printf_filtered("\t This can either be a PowerPC binary or\n");
- printf_filtered("\t a text file containing a device tree\n");
- printf_filtered("\t specification.\n");
- printf_filtered("\t PSIM will attempt to determine from the\n");
- printf_filtered("\t specified <image> the intended emulation\n");
- printf_filtered("\t environment.\n");
- printf_filtered("\t If PSIM gets it wrong, the emulation\n");
- printf_filtered("\t environment can be specified using the\n");
- printf_filtered("\t `-e' option (described below).\n");
- printf_filtered("\n"); }
- printf_filtered("\t<image-arg> Argument to be passed to <image>\n");
- if (verbose) {
- printf_filtered("\t These arguments will be passed to\n");
- printf_filtered("\t <image> (as standard C argv, argc)\n");
- printf_filtered("\t when <image> is started.\n");
- printf_filtered("\n"); }
- printf_filtered("\t<psim-option> See below\n");
- printf_filtered("\n");
- printf_filtered("The following are valid <psim-option>s:\n");
- printf_filtered("\n");
-
- printf_filtered("\t-c <count> Limit the simulation to <count> iterations\n");
- if (verbose) {
- printf_filtered("\n");
- }
-
- printf_filtered("\t-i or -i2 Print instruction counting statistics\n");
- if (verbose) {
- printf_filtered("\t Specify -i2 for a more detailed display\n");
- printf_filtered("\n");
- }
-
- printf_filtered("\t-I Print execution unit statistics\n");
- if (verbose) { printf_filtered("\n"); }
-
- printf_filtered("\t-e <os-emul> specify an OS or platform to model\n");
- if (verbose) {
- printf_filtered("\t Can be any of the following:\n");
- printf_filtered("\t bug - OEA + MOTO BUG ROM calls\n");
- printf_filtered("\t netbsd - UEA + NetBSD system calls\n");
- printf_filtered("\t solaris - UEA + Solaris system calls\n");
- printf_filtered("\t linux - UEA + Linux system calls\n");
- printf_filtered("\t chirp - OEA + a few OpenBoot calls\n");
- printf_filtered("\n"); }
-
- printf_filtered("\t-E <endian> Specify the endianness of the target\n");
- if (verbose) {
- printf_filtered("\t Can be any of the following:\n");
- printf_filtered("\t big - big endian target\n");
- printf_filtered("\t little - little endian target\n");
- printf_filtered("\n"); }
-
- printf_filtered("\t-f <file> Merge <file> into the device tree\n");
- if (verbose) { printf_filtered("\n"); }
-
- printf_filtered("\t-h -? -H give more detailed usage\n");
- if (verbose) { printf_filtered("\n"); }
-
- printf_filtered("\t-m <model> Specify the processor to model (604)\n");
- if (verbose) {
- printf_filtered("\t Selects the processor to use when\n");
- printf_filtered("\t modeling execution units. Includes:\n");
- printf_filtered("\t 604, 603 and 603e\n");
- printf_filtered("\n"); }
-
- printf_filtered("\t-n <nr-smp> Specify the number of processors in SMP simulations\n");
- if (verbose) {
- printf_filtered("\t Specifies the number of processors that are\n");
- printf_filtered("\t to be modeled in a symetric multi-processor (SMP)\n");
- printf_filtered("\t simulation\n");
- printf_filtered("\n"); }
-
- printf_filtered("\t-o <dev-spec> Add device <dev-spec> to the device tree\n");
- if (verbose) { printf_filtered("\n"); }
-
- printf_filtered("\t-r <ram-size> Set RAM size in bytes (OEA environments)\n");
- if (verbose) { printf_filtered("\n"); }
-
- printf_filtered("\t-t [!]<trace> Enable (disable) <trace> option\n");
- if (verbose) { printf_filtered("\n"); }
-
- printf_filtered("\n");
- trace_usage(verbose);
- device_usage(verbose);
- if (verbose > 1) {
- printf_filtered("\n");
- print_options();
- }
- error("");
-}
-
-/* Test "string" for containing a string of digits that form a number
-between "min" and "max". The return value is the number or "err". */
-static
-int is_num( char *string, int min, int max, int err)
-{
- int result = 0;
-
- for ( ; *string; ++string)
- {
- if (!isdigit(*string))
- {
- result = err;
- break;
- }
- result = result * 10 + (*string - '0');
- }
- if (result < min || result > max)
- result = err;
-
- return result;
-}
-
-INLINE_PSIM\
-(char **)
-psim_options(device *root,
- char **argv)
-{
- device *current = root;
- int argp;
- if (argv == NULL)
- return NULL;
- argp = 0;
- while (argv[argp] != NULL && argv[argp][0] == '-') {
- char *p = argv[argp] + 1;
- char *param;
- while (*p != '\0') {
- switch (*p) {
- default:
- psim_usage(0);
- error ("");
- break;
- case 'c':
- param = find_arg("Missing <count> option for -c (max-iterations)\n", &argp, argv);
- tree_parse(root, "/openprom/options/max-iterations %s", param);
- break;
- case 'e':
- param = find_arg("Missing <emul> option for -e (os-emul)\n", &argp, argv);
- tree_parse(root, "/openprom/options/os-emul %s", param);
- break;
- case 'E':
- /* endian spec, ignored for now */
- param = find_arg("Missing <endian> option for -E (target-endian)\n", &argp, argv);
- if (strcmp (param, "big") == 0)
- tree_parse (root, "/options/little-endian? false");
- else if (strcmp (param, "little") == 0)
- tree_parse (root, "/options/little-endian? true");
- else
- {
- printf_filtered ("Invalid <endian> option for -E (target-endian)\n");
- psim_usage (0);
- }
- break;
- case 'f':
- param = find_arg("Missing <file> option for -f\n", &argp, argv);
- psim_merge_device_file(root, param);
- break;
- case 'h':
- case '?':
- psim_usage(1);
- break;
- case 'H':
- psim_usage(2);
- break;
- case 'i':
- if (isdigit(p[1])) {
- tree_parse(root, "/openprom/trace/print-info %c", p[1]);
- p++;
- }
- else {
- tree_parse(root, "/openprom/trace/print-info 1");
- }
- break;
- case 'I':
- tree_parse(root, "/openprom/trace/print-info 2");
- tree_parse(root, "/openprom/options/model-issue %d",
- MODEL_ISSUE_PROCESS);
- break;
- case 'm':
- param = find_arg("Missing <model> option for -m (model)\n", &argp, argv);
- tree_parse(root, "/openprom/options/model \"%s", param);
- break;
- case 'n':
- param = find_arg("Missing <nr-smp> option for -n (smp)\n", &argp, argv);
- tree_parse(root, "/openprom/options/smp %s", param);
- break;
- case 'o':
- param = find_arg("Missing <dev-spec> option for -o\n", &argp, argv);
- if (memcmp(param, "mpc860c0", 8) == 0)
- {
- if (param[8] == '\0')
- tree_parse(root, "/options/mpc860c0 5");
- else if (param[8] == '=' && is_num(param+9, 1, 10, 0))
- {
- tree_parse(root, "/options/mpc860c0 %s", param+9);
- }
- else error("Invalid mpc860c0 option for -o\n");
- }
- else
- current = tree_parse(current, "%s", param);
- break;
- case 'r':
- param = find_arg("Missing <ram-size> option for -r (oea-memory-size)\n", &argp, argv);
- tree_parse(root, "/openprom/options/oea-memory-size %s",
- param);
- break;
- case 't':
- param = find_arg("Missing <trace> option for -t (trace/*)\n", &argp, argv);
- if (param[0] == '!')
- tree_parse(root, "/openprom/trace/%s 0", param+1);
- else
- tree_parse(root, "/openprom/trace/%s 1", param);
- break;
- }
- p += 1;
- }
- argp += 1;
- }
- /* force the trace node to process its options now *before* the tree
- initialization occures */
- device_ioctl(tree_find_device(root, "/openprom/trace"),
- NULL, 0,
- device_ioctl_set_trace);
-
- {
- void semantic_init(device* root);
- semantic_init(root);
- }
-
- /* return where the options end */
- return argv + argp;
-}
-
-INLINE_PSIM\
-(void)
-psim_command(device *root,
- char **argv)
-{
- int argp = 0;
- if (argv[argp] == NULL) {
- return;
- }
- else if (strcmp(argv[argp], "trace") == 0) {
- const char *opt = find_arg("Missing <trace> option", &argp, argv);
- if (opt[0] == '!')
- trace_option(opt + 1, 0);
- else
- trace_option(opt, 1);
- }
- else if (strcmp(*argv, "change-media") == 0) {
- char *device = find_arg("Missing device name", &argp, argv);
- char *media = argv[++argp];
- device_ioctl(tree_find_device(root, device), NULL, 0,
- device_ioctl_change_media, media);
- }
- else {
- printf_filtered("Unknown PSIM command %s, try\n", argv[argp]);
- printf_filtered(" trace <trace-option>\n");
- printf_filtered(" change-media <device> [ <new-image> ]\n");
- }
-}
-
-
-/* create the simulator proper from the device tree and executable */
-
-INLINE_PSIM\
-(psim *)
-psim_create(const char *file_name,
- device *root)
-{
- int cpu_nr;
- const char *env;
- psim *system;
- os_emul *os_emulation;
- int nr_cpus;
-
- /* given this partially populated device tree, os_emul_create() uses
- it and file_name to determine the selected emulation and hence
- further populate the tree with any other required nodes. */
-
- os_emulation = os_emul_create(file_name, root);
- if (os_emulation == NULL)
- error("psim: either file %s was not reconized or unreconized or unknown os-emulation type\n", file_name);
-
- /* fill in the missing real number of CPU's */
- nr_cpus = tree_find_integer_property(root, "/openprom/options/smp");
- if (MAX_NR_PROCESSORS < nr_cpus)
- error("target and configured number of cpus conflict\n");
-
- /* fill in the missing TARGET BYTE ORDER information */
- current_target_byte_order
- = (tree_find_boolean_property(root, "/options/little-endian?")
- ? LITTLE_ENDIAN
- : BIG_ENDIAN);
- if (CURRENT_TARGET_BYTE_ORDER != current_target_byte_order)
- error("target and configured byte order conflict\n");
-
- /* fill in the missing HOST BYTE ORDER information */
- current_host_byte_order = (current_host_byte_order = 1,
- (*(char*)(&current_host_byte_order)
- ? LITTLE_ENDIAN
- : BIG_ENDIAN));
- if (CURRENT_HOST_BYTE_ORDER != current_host_byte_order)
- error("host and configured byte order conflict\n");
-
- /* fill in the missing OEA/VEA information */
- env = tree_find_string_property(root, "/openprom/options/env");
- current_environment = ((strcmp(env, "user") == 0
- || strcmp(env, "uea") == 0)
- ? USER_ENVIRONMENT
- : (strcmp(env, "virtual") == 0
- || strcmp(env, "vea") == 0)
- ? VIRTUAL_ENVIRONMENT
- : (strcmp(env, "operating") == 0
- || strcmp(env, "oea") == 0)
- ? OPERATING_ENVIRONMENT
- : 0);
- if (current_environment == 0)
- error("unreconized /options env property\n");
- if (CURRENT_ENVIRONMENT != current_environment)
- error("target and configured environment conflict\n");
-
- /* fill in the missing ALLIGNMENT information */
- current_alignment
- = (tree_find_boolean_property(root, "/openprom/options/strict-alignment?")
- ? STRICT_ALIGNMENT
- : NONSTRICT_ALIGNMENT);
- if (CURRENT_ALIGNMENT != current_alignment)
- error("target and configured alignment conflict\n");
-
- /* fill in the missing FLOATING POINT information */
- current_floating_point
- = (tree_find_boolean_property(root, "/openprom/options/floating-point?")
- ? HARD_FLOATING_POINT
- : SOFT_FLOATING_POINT);
- if (CURRENT_FLOATING_POINT != current_floating_point)
- error("target and configured floating-point conflict\n");
-
- /* fill in the missing STDIO information */
- current_stdio
- = (tree_find_boolean_property(root, "/openprom/options/use-stdio?")
- ? DO_USE_STDIO
- : DONT_USE_STDIO);
- if (CURRENT_STDIO != current_stdio)
- error("target and configured stdio interface conflict\n");
-
- /* sort out the level of detail for issue modeling */
- current_model_issue
- = tree_find_integer_property(root, "/openprom/options/model-issue");
- if (CURRENT_MODEL_ISSUE != current_model_issue)
- error("target and configured model-issue conflict\n");
-
- /* sort out our model architecture - wrong.
-
- FIXME: this should be obtaining the required information from the
- device tree via the "/chosen" property "cpu" which is an instance
- (ihandle) for the only executing processor. By converting that
- ihandle into the corresponding cpu's phandle and then querying
- the "name" property, the cpu type can be determined. Ok? */
-
- model_set(tree_find_string_property(root, "/openprom/options/model"));
-
- /* create things */
- system = ZALLOC(psim);
- system->events = event_queue_create();
- system->memory = core_from_device(root);
- system->monitor = mon_create();
- system->nr_cpus = nr_cpus;
- system->os_emulation = os_emulation;
- system->devices = root;
-
- /* now all the processors attaching to each their per-cpu information */
- for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++) {
- system->processors[cpu_nr] = cpu_create(system,
- system->memory,
- mon_cpu(system->monitor,
- cpu_nr),
- system->os_emulation,
- cpu_nr);
- }
-
- /* dump out the contents of the device tree */
- if (ppc_trace[trace_print_device_tree] || ppc_trace[trace_dump_device_tree])
- tree_print(root);
- if (ppc_trace[trace_dump_device_tree])
- error("");
-
- return system;
-}
-
-
-/* allow the simulation to stop/restart abnormaly */
-
-INLINE_PSIM\
-(void)
-psim_set_halt_and_restart(psim *system,
- void *halt_jmp_buf,
- void *restart_jmp_buf)
-{
- system->path_to_halt = halt_jmp_buf;
- system->path_to_restart = restart_jmp_buf;
-}
-
-INLINE_PSIM\
-(void)
-psim_clear_halt_and_restart(psim *system)
-{
- system->path_to_halt = NULL;
- system->path_to_restart = NULL;
-}
-
-INLINE_PSIM\
-(void)
-psim_restart(psim *system,
- int current_cpu)
-{
- ASSERT(current_cpu >= 0 && current_cpu < system->nr_cpus);
- ASSERT(system->path_to_restart != NULL);
- system->last_cpu = current_cpu;
- longjmp(*(jmp_buf*)(system->path_to_restart), current_cpu + 1);
-}
-
-
-static void
-cntrl_c_simulation(void *data)
-{
- psim *system = data;
- psim_halt(system,
- psim_nr_cpus(system),
- was_continuing,
- SIGINT);
-}
-
-INLINE_PSIM\
-(void)
-psim_stop(psim *system)
-{
- event_queue_schedule_after_signal(psim_event_queue(system),
- 0 /*NOW*/,
- cntrl_c_simulation,
- system);
-}
-
-INLINE_PSIM\
-(void)
-psim_halt(psim *system,
- int current_cpu,
- stop_reason reason,
- int signal)
-{
- ASSERT(current_cpu >= 0 && current_cpu <= system->nr_cpus);
- ASSERT(system->path_to_halt != NULL);
- system->last_cpu = current_cpu;
- system->halt_status.reason = reason;
- system->halt_status.signal = signal;
- if (current_cpu == system->nr_cpus) {
- system->halt_status.cpu_nr = 0;
- system->halt_status.program_counter =
- cpu_get_program_counter(system->processors[0]);
- }
- else {
- system->halt_status.cpu_nr = current_cpu;
- system->halt_status.program_counter =
- cpu_get_program_counter(system->processors[current_cpu]);
- }
- longjmp(*(jmp_buf*)(system->path_to_halt), current_cpu + 1);
-}
-
-
-INLINE_PSIM\
-(int)
-psim_last_cpu(psim *system)
-{
- return system->last_cpu;
-}
-
-INLINE_PSIM\
-(int)
-psim_nr_cpus(psim *system)
-{
- return system->nr_cpus;
-}
-
-INLINE_PSIM\
-(psim_status)
-psim_get_status(psim *system)
-{
- return system->halt_status;
-}
-
-
-INLINE_PSIM\
-(cpu *)
-psim_cpu(psim *system,
- int cpu_nr)
-{
- if (cpu_nr < 0 || cpu_nr >= system->nr_cpus)
- return NULL;
- else
- return system->processors[cpu_nr];
-}
-
-
-INLINE_PSIM\
-(device *)
-psim_device(psim *system,
- const char *path)
-{
- return tree_find_device(system->devices, path);
-}
-
-INLINE_PSIM\
-(event_queue *)
-psim_event_queue(psim *system)
-{
- return system->events;
-}
-
-
-
-STATIC_INLINE_PSIM\
-(void)
-psim_max_iterations_exceeded(void *data)
-{
- psim *system = data;
- psim_halt(system,
- system->nr_cpus, /* halted during an event */
- was_signalled,
- -1);
-}
-
-
-INLINE_PSIM\
-(void)
-psim_init(psim *system)
-{
- int cpu_nr;
-
- /* scrub the monitor */
- mon_init(system->monitor, system->nr_cpus);
-
- /* trash any pending events */
- event_queue_init(system->events);
-
- /* if needed, schedule a halt event. FIXME - In the future this
- will be replaced by a more generic change to psim_command(). A
- new command `schedule NNN halt' being added. */
- if (tree_find_property(system->devices, "/openprom/options/max-iterations")) {
- event_queue_schedule(system->events,
- tree_find_integer_property(system->devices,
- "/openprom/options/max-iterations") - 2,
- psim_max_iterations_exceeded,
- system);
- }
-
- /* scrub all the cpus */
- for (cpu_nr = 0; cpu_nr < system->nr_cpus; cpu_nr++)
- cpu_init(system->processors[cpu_nr]);
-
- /* init all the devices (which updates the cpus) */
- tree_init(system->devices, system);
-
- /* and the emulation (which needs an initialized device tree) */
- os_emul_init(system->os_emulation, system->nr_cpus);
-
- /* now sync each cpu against the initialized state of its registers */
- for (cpu_nr = 0; cpu_nr < system->nr_cpus; cpu_nr++) {
- cpu *processor = system->processors[cpu_nr];
- cpu_synchronize_context(processor, cpu_get_program_counter(processor));
- cpu_page_tlb_invalidate_all(processor);
- }
-
- /* force loop to start with first cpu */
- system->last_cpu = -1;
-}
-
-INLINE_PSIM\
-(void)
-psim_stack(psim *system,
- char **argv,
- char **envp)
-{
- /* pass the stack device the argv/envp and let it work out what to
- do with it */
- device *stack_device = tree_find_device(system->devices,
- "/openprom/init/stack");
- if (stack_device != (device*)0) {
- unsigned_word stack_pointer;
- psim_read_register(system, 0, &stack_pointer, "sp", cooked_transfer);
- device_ioctl(stack_device,
- NULL, /*cpu*/
- 0, /*cia*/
- device_ioctl_create_stack,
- stack_pointer,
- argv,
- envp);
- }
-}
-
-
-
-/* SIMULATE INSTRUCTIONS, various different ways of achieving the same
- thing */
-
-INLINE_PSIM\
-(void)
-psim_step(psim *system)
-{
- volatile int keep_running = 0;
- idecode_run_until_stop(system, &keep_running,
- system->events, system->processors, system->nr_cpus);
-}
-
-INLINE_PSIM\
-(void)
-psim_run(psim *system)
-{
- idecode_run(system,
- system->events, system->processors, system->nr_cpus);
-}
-
-
-/* storage manipulation functions */
-
-INLINE_PSIM\
-(void)
-psim_read_register(psim *system,
- int which_cpu,
- void *buf,
- const char reg[],
- transfer_mode mode)
-{
- register_descriptions description;
- char cooked_buf[sizeof(unsigned_8)];
- cpu *processor;
-
- /* find our processor */
- if (which_cpu == MAX_NR_PROCESSORS) {
- if (system->last_cpu == system->nr_cpus
- || system->last_cpu == -1)
- which_cpu = 0;
- else
- which_cpu = system->last_cpu;
- }
- ASSERT(which_cpu >= 0 && which_cpu < system->nr_cpus);
-
- processor = system->processors[which_cpu];
-
- /* find the register description */
- description = register_description(reg);
- if (description.type == reg_invalid)
- error("psim_read_register() invalid register name `%s'\n", reg);
-
- /* get the cooked value */
- switch (description.type) {
-
- case reg_gpr:
- *(gpreg*)cooked_buf = cpu_registers(processor)->gpr[description.index];
- break;
-
- case reg_spr:
- *(spreg*)cooked_buf = cpu_registers(processor)->spr[description.index];
- break;
-
- case reg_sr:
- *(sreg*)cooked_buf = cpu_registers(processor)->sr[description.index];
- break;
-
- case reg_fpr:
- *(fpreg*)cooked_buf = cpu_registers(processor)->fpr[description.index];
- break;
-
- case reg_pc:
- *(unsigned_word*)cooked_buf = cpu_get_program_counter(processor);
- break;
-
- case reg_cr:
- *(creg*)cooked_buf = cpu_registers(processor)->cr;
- break;
-
- case reg_msr:
- *(msreg*)cooked_buf = cpu_registers(processor)->msr;
- break;
-
- case reg_fpscr:
- *(fpscreg*)cooked_buf = cpu_registers(processor)->fpscr;
- break;
-
- case reg_insns:
- *(unsigned_word*)cooked_buf = mon_get_number_of_insns(system->monitor,
- which_cpu);
- break;
-
- case reg_stalls:
- if (cpu_model(processor) == NULL)
- error("$stalls only valid if processor unit model enabled (-I)\n");
- *(unsigned_word*)cooked_buf = model_get_number_of_stalls(cpu_model(processor));
- break;
-
- case reg_cycles:
- if (cpu_model(processor) == NULL)
- error("$cycles only valid if processor unit model enabled (-I)\n");
- *(unsigned_word*)cooked_buf = model_get_number_of_cycles(cpu_model(processor));
- break;
-
- default:
- printf_filtered("psim_read_register(processor=0x%lx,buf=0x%lx,reg=%s) %s\n",
- (unsigned long)processor, (unsigned long)buf, reg,
- "read of this register unimplemented");
- break;
-
- }
-
- /* the PSIM internal values are in host order. To fetch raw data,
- they need to be converted into target order and then returned */
- if (mode == raw_transfer) {
- /* FIXME - assumes that all registers are simple integers */
- switch (description.size) {
- case 1:
- *(unsigned_1*)buf = H2T_1(*(unsigned_1*)cooked_buf);
- break;
- case 2:
- *(unsigned_2*)buf = H2T_2(*(unsigned_2*)cooked_buf);
- break;
- case 4:
- *(unsigned_4*)buf = H2T_4(*(unsigned_4*)cooked_buf);
- break;
- case 8:
- *(unsigned_8*)buf = H2T_8(*(unsigned_8*)cooked_buf);
- break;
- }
- }
- else {
- memcpy(buf/*dest*/, cooked_buf/*src*/, description.size);
- }
-
-}
-
-
-
-INLINE_PSIM\
-(void)
-psim_write_register(psim *system,
- int which_cpu,
- const void *buf,
- const char reg[],
- transfer_mode mode)
-{
- cpu *processor;
- register_descriptions description;
- char cooked_buf[sizeof(unsigned_8)];
-
- /* find our processor */
- if (which_cpu == MAX_NR_PROCESSORS) {
- if (system->last_cpu == system->nr_cpus
- || system->last_cpu == -1)
- which_cpu = 0;
- else
- which_cpu = system->last_cpu;
- }
- if (which_cpu == -1) {
- int i;
- for (i = 0; i < system->nr_cpus; i++)
- psim_write_register(system, i, buf, reg, mode);
- return;
- }
- ASSERT(which_cpu >= 0 && which_cpu < system->nr_cpus);
-
- processor = system->processors[which_cpu];
-
- /* find the description of the register */
- description = register_description(reg);
- if (description.type == reg_invalid)
- error("psim_write_register() invalid register name %s\n", reg);
-
- /* If the data is comming in raw (target order), need to cook it
- into host order before putting it into PSIM's internal structures */
- if (mode == raw_transfer) {
- switch (description.size) {
- case 1:
- *(unsigned_1*)cooked_buf = T2H_1(*(unsigned_1*)buf);
- break;
- case 2:
- *(unsigned_2*)cooked_buf = T2H_2(*(unsigned_2*)buf);
- break;
- case 4:
- *(unsigned_4*)cooked_buf = T2H_4(*(unsigned_4*)buf);
- break;
- case 8:
- *(unsigned_8*)cooked_buf = T2H_8(*(unsigned_8*)buf);
- break;
- }
- }
- else {
- memcpy(cooked_buf/*dest*/, buf/*src*/, description.size);
- }
-
- /* put the cooked value into the register */
- switch (description.type) {
-
- case reg_gpr:
- cpu_registers(processor)->gpr[description.index] = *(gpreg*)cooked_buf;
- break;
-
- case reg_fpr:
- cpu_registers(processor)->fpr[description.index] = *(fpreg*)cooked_buf;
- break;
-
- case reg_pc:
- cpu_set_program_counter(processor, *(unsigned_word*)cooked_buf);
- break;
-
- case reg_spr:
- cpu_registers(processor)->spr[description.index] = *(spreg*)cooked_buf;
- break;
-
- case reg_sr:
- cpu_registers(processor)->sr[description.index] = *(sreg*)cooked_buf;
- break;
-
- case reg_cr:
- cpu_registers(processor)->cr = *(creg*)cooked_buf;
- break;
-
- case reg_msr:
- cpu_registers(processor)->msr = *(msreg*)cooked_buf;
- break;
-
- case reg_fpscr:
- cpu_registers(processor)->fpscr = *(fpscreg*)cooked_buf;
- break;
-
- default:
- printf_filtered("psim_write_register(processor=0x%lx,cooked_buf=0x%lx,reg=%s) %s\n",
- (unsigned long)processor, (unsigned long)cooked_buf, reg,
- "read of this register unimplemented");
- break;
-
- }
-
-}
-
-
-
-INLINE_PSIM\
-(unsigned)
-psim_read_memory(psim *system,
- int which_cpu,
- void *buffer,
- unsigned_word vaddr,
- unsigned nr_bytes)
-{
- cpu *processor;
- if (which_cpu == MAX_NR_PROCESSORS) {
- if (system->last_cpu == system->nr_cpus
- || system->last_cpu == -1)
- which_cpu = 0;
- else
- which_cpu = system->last_cpu;
- }
- processor = system->processors[which_cpu];
- return vm_data_map_read_buffer(cpu_data_map(processor),
- buffer, vaddr, nr_bytes,
- NULL, -1);
-}
-
-
-INLINE_PSIM\
-(unsigned)
-psim_write_memory(psim *system,
- int which_cpu,
- const void *buffer,
- unsigned_word vaddr,
- unsigned nr_bytes,
- int violate_read_only_section)
-{
- cpu *processor;
- if (which_cpu == MAX_NR_PROCESSORS) {
- if (system->last_cpu == system->nr_cpus
- || system->last_cpu == -1)
- which_cpu = 0;
- else
- which_cpu = system->last_cpu;
- }
- ASSERT(which_cpu >= 0 && which_cpu < system->nr_cpus);
- processor = system->processors[which_cpu];
- return vm_data_map_write_buffer(cpu_data_map(processor),
- buffer, vaddr, nr_bytes, 1/*violate-read-only*/,
- NULL, -1);
-}
-
-
-INLINE_PSIM\
-(void)
-psim_print_info(psim *system,
- int verbose)
-{
- mon_print_info(system, system->monitor, verbose);
-}
-
-
-/* Merge a device tree and a device file. */
-
-INLINE_PSIM\
-(void)
-psim_merge_device_file(device *root,
- const char *file_name)
-{
- FILE *description;
- int line_nr;
- char device_path[1000];
- device *current;
-
- /* try opening the file */
- description = fopen(file_name, "r");
- if (description == NULL) {
- perror(file_name);
- error("Invalid file %s specified", file_name);
- }
-
- line_nr = 0;
- current = root;
- while (fgets(device_path, sizeof(device_path), description)) {
- char *device;
- /* check that the full line was read */
- if (strchr(device_path, '\n') == NULL) {
- fclose(description);
- error("%s:%d: line to long - %s",
- file_name, line_nr, device_path);
- }
- else
- *strchr(device_path, '\n') = '\0';
- line_nr++;
- /* skip comments ("#" or ";") and blank lines lines */
- for (device = device_path;
- *device != '\0' && isspace(*device);
- device++);
- if (device[0] == '#'
- || device[0] == ';'
- || device[0] == '\0')
- continue;
- /* merge any appended lines */
- while (device_path[strlen(device_path) - 1] == '\\') {
- int curlen = strlen(device_path) - 1;
- /* zap \ */
- device_path[curlen] = '\0';
- /* append the next line */
- if (!fgets(device_path + curlen, sizeof(device_path) - curlen, description)) {
- fclose(description);
- error("%s:%s: unexpected eof in line continuation - %s",
- file_name, line_nr, device_path);
- }
- if (strchr(device_path, '\n') == NULL) {
- fclose(description);
- error("%s:%d: line to long - %s",
- file_name, line_nr, device_path);
- }
- else
- *strchr(device_path, '\n') = '\0';
- line_nr++;
- }
- /* parse this line */
- current = tree_parse(current, "%s", device);
- }
- fclose(description);
-}
-
-
-#endif /* _PSIM_C_ */
View Lorry Controller Status