/* This file is part of the program psim.
- Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
+ Copyright 1994, 1995, 1996, 1997, 2003 Andrew Cagney
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
+ the Free Software Foundation; either version 3 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.
-
+ along with this program; if not, see <http://www.gnu.org/licenses/>.
+
*/
#include "emul_generic.h"
#include "emul_chirp.h"
-#include "cap.h"
-
#ifdef HAVE_STRING_H
#include <string.h>
#else
#endif
#endif
+#ifdef HAVE_UNISTD_H
#include <unistd.h>
+#endif
#ifndef STATIC_INLINE_EMUL_CHIRP
#define STATIC_INLINE_EMUL_CHIRP STATIC_INLINE
#endif
+/* EMULATION
+
+
+ OpenFirmware - IEEE Standard for Boot (Initialization
+ Configuration) Firmware.
+
+
+ DESCRIPTION
+
+
+ BUGS
+
+
+ This code assumes that the memory node has #address-cells and
+ #size-cells set to one. For future implementations, this may not
+ be the case.
+
+ */
+
+
+
+
/* Descriptor of the open boot services being emulated */
-typedef unsigned_word (chirp_handler)
+typedef int (chirp_handler)
(os_emul_data *data,
cpu *processor,
unsigned_word cia);
+
typedef struct _chirp_services {
const char *name;
chirp_handler *handler;
request or waiting on a client callback */
typedef enum {
serving,
- catching,
+ emulating,
+ faulting,
} chirp_emul_state;
struct _os_emul_data {
chirp_emul_state state;
unsigned_word return_address;
unsigned_word arguments;
+ unsigned_word n_args;
+ unsigned_word n_returns;
chirp_services *service;
- unsigned_word serving_instruction_ea;
- unsigned_word catching_instruction_ea;
- cap *phandles;
device *root;
+ chirp_services *services;
+ /* configuration */
+ unsigned_word memory_size;
+ unsigned_word real_base;
+ unsigned_word real_size;
+ unsigned_word virt_base;
+ unsigned_word virt_size;
+ int real_mode;
+ int little_endian;
+ int floating_point_available;
+ int interrupt_prefix;
+ unsigned_word load_base;
+ /* hash table */
+ unsigned_word nr_page_table_entry_groups;
+ unsigned_word htab_offset;
+ unsigned_word htab_ra;
+ unsigned_word htab_va;
+ unsigned_word sizeof_htab;
+ /* virtual address of htab */
+ unsigned_word stack_offset;
+ unsigned_word stack_ra;
+ unsigned_word stack_va;
+ unsigned_word sizeof_stack;
+ /* addresses of emulation instructions virtual/real */
+ unsigned_word code_offset;
+ unsigned_word code_va;
+ unsigned_word code_ra;
+ unsigned_word sizeof_code;
+ unsigned_word code_client_va;
+ unsigned_word code_client_ra;
+ unsigned_word code_callback_va;
+ unsigned_word code_callback_ra;
+ unsigned_word code_loop_va;
+ unsigned_word code_loop_ra;
};
+/* returns the name of the corresponding Ihandle */
+static const char *
+ihandle_name(device_instance *ihandle)
+{
+ if (ihandle == NULL)
+ return "";
+ else
+ return device_name(device_instance_device(ihandle));
+}
+
+
+
+/* Read/write the argument list making certain that all values are
+ converted to/from host byte order.
+
+ In the below only n_args+n_returns is read/written */
+
+static int
+chirp_read_t2h_args(void *args,
+ int sizeof_args,
+ int n_args,
+ int n_returns,
+ os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ unsigned_cell *words;
+ int i;
+ /* check against the number of arguments specified by the client
+ program */
+ if ((n_args >= 0 && data->n_args != n_args)
+ || (n_returns >= 0 && data->n_returns != n_returns)) {
+ TRACE(trace_os_emul, ("%s - invalid nr of args - n_args=%ld, n_returns=%ld\n",
+ data->service->name,
+ (long)data->n_args,
+ (long)data->n_returns));
+ return -1;
+ }
+ /* check that there is enough space */
+ if (sizeof(unsigned_cell) * (data->n_args + data->n_returns) > sizeof_args)
+ return -1;
+ /* bring in the data */
+ memset(args, 0, sizeof_args);
+ emul_read_buffer(args, data->arguments + 3 * sizeof(unsigned_cell),
+ sizeof(unsigned_cell) * (data->n_args + data->n_returns),
+ processor, cia);
+ /* convert all words to host format */
+ words = args;
+ for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++)
+ words[i] = T2H_cell(words[i]);
+ return 0;
+}
+
+static void
+chirp_write_h2t_args(void *args,
+ int sizeof_args,
+ os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ int i;
+ unsigned_cell *words;
+ /* convert to target everything */
+ words = args;
+ for (i = 0; i < (sizeof_args / sizeof(unsigned_cell)); i++)
+ words[i] = H2T_cell(words[i]);
+ /* bring in the data */
+ emul_write_buffer(args, data->arguments + 3 * sizeof(unsigned_cell),
+ sizeof(unsigned_cell) * (data->n_args + data->n_returns),
+ processor, cia);
+}
+
+
/* OpenBoot emulation functions */
-static unsigned_word
+/* client interface */
+
+static int
+chirp_emul_test(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct test_args {
+ /*in*/
+ unsigned_cell name; /*string*/
+ /*out*/
+ unsigned_cell missing;
+ } args;
+ char name[32];
+ chirp_services *service = NULL;
+ /* read in the arguments */
+ if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
+ return -1;
+ emul_read_string(name, args.name, sizeof(name),
+ processor, cia);
+ TRACE(trace_os_emul, ("test - in - name=`%s'\n", name));
+ /* see if we know about the service */
+ service = data->services;
+ while (service->name != NULL && strcmp(service->name, name) != 0) {
+ service++;
+ }
+ if (service->name == NULL)
+ args.missing = -1;
+ else
+ args.missing = 0;
+ /* write the arguments back out */
+ TRACE(trace_os_emul, ("test - out - missing=%ld\n",
+ (long)args.missing));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+
+/* Device tree */
+
+static int
+chirp_emul_peer(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct peer_args {
+ /*in*/
+ unsigned_cell phandle;
+ /*out*/
+ unsigned_cell sibling_phandle;
+ } args;
+ device *phandle;
+ device *sibling_phandle = NULL;
+ /* read in the arguments */
+ if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
+ return -1;
+ phandle = external_to_device(data->root, args.phandle);
+ TRACE(trace_os_emul, ("peer - in - phandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.phandle,
+ (unsigned long)phandle,
+ (phandle == NULL ? "" : device_name(phandle))));
+ /* find the peer */
+ if (args.phandle == 0) {
+ sibling_phandle = data->root;
+ args.sibling_phandle = device_to_external(sibling_phandle);
+ }
+ else if (phandle == NULL) {
+ sibling_phandle = NULL;
+ args.sibling_phandle = -1;
+ }
+ else {
+ sibling_phandle = device_sibling(phandle);
+ if (sibling_phandle == NULL)
+ args.sibling_phandle = 0;
+ else
+ args.sibling_phandle = device_to_external(sibling_phandle);
+ }
+ /* write the arguments back out */
+ TRACE(trace_os_emul, ("peer - out - sibling_phandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.sibling_phandle,
+ (unsigned long)sibling_phandle,
+ (sibling_phandle == NULL ? "" : device_name(sibling_phandle))));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_child(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct child_args {
+ /*in*/
+ unsigned_cell phandle;
+ /*out*/
+ unsigned_cell child_phandle;
+ } args;
+ device *phandle;
+ device *child_phandle;
+ /* read the arguments in */
+ if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
+ return -1;
+ phandle = external_to_device(data->root, args.phandle);
+ TRACE(trace_os_emul, ("child - in - phandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.phandle,
+ (unsigned long)phandle,
+ (phandle == NULL ? "" : device_name(phandle))));
+ /* find a child */
+ if (args.phandle == 0
+ || phandle == NULL) {
+ child_phandle = NULL;
+ args.child_phandle = -1;
+ }
+ else {
+ child_phandle = device_child(phandle);
+ if (child_phandle == NULL)
+ args.child_phandle = 0;
+ else
+ args.child_phandle = device_to_external(child_phandle);
+ }
+ /* write the result out */
+ TRACE(trace_os_emul, ("child - out - child_phandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.child_phandle,
+ (unsigned long)child_phandle,
+ (child_phandle == NULL ? "" : device_name(child_phandle))));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_parent(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct parent_args {
+ /*in*/
+ unsigned_cell phandle;
+ /*out*/
+ unsigned_cell parent_phandle;
+ } args;
+ device *phandle;
+ device *parent_phandle;
+ /* read the args in */
+ if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
+ return -1;
+ phandle = external_to_device(data->root, args.phandle);
+ TRACE(trace_os_emul, ("parent - in - phandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.phandle,
+ (unsigned long)phandle,
+ (phandle == NULL ? "" : device_name(phandle))));
+ /* find a parent */
+ if (args.phandle == 0
+ || phandle == NULL) {
+ parent_phandle = NULL;
+ args.parent_phandle = -1;
+ }
+ else {
+ parent_phandle = device_parent(phandle);
+ if (parent_phandle == NULL)
+ args.parent_phandle = 0;
+ else
+ args.parent_phandle = device_to_external(parent_phandle);
+ }
+ /* return the result */
+ TRACE(trace_os_emul, ("parent - out - parent_phandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.parent_phandle,
+ (unsigned long)parent_phandle,
+ (parent_phandle == NULL ? "" : device_name(parent_phandle))));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_instance_to_package(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct instance_to_package_args {
+ /*in*/
+ unsigned_cell ihandle;
+ /*out*/
+ unsigned_cell phandle;
+ } args;
+ device_instance *ihandle;
+ device *phandle = NULL;
+ /* read the args in */
+ if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
+ return -1;
+ ihandle = external_to_device_instance(data->root, args.ihandle);
+ TRACE(trace_os_emul, ("instance-to-package - in - ihandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.ihandle,
+ (unsigned long)ihandle,
+ ihandle_name(ihandle)));
+ /* find the corresponding phandle */
+ if (ihandle == NULL) {
+ phandle = NULL;
+ args.phandle = -1;
+ }
+ else {
+ phandle = device_instance_device(ihandle);
+ args.phandle = device_to_external(phandle);
+ }
+ /* return the result */
+ TRACE(trace_os_emul, ("instance-to-package - out - phandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.phandle,
+ (unsigned long)phandle,
+ (phandle == NULL ? "" : device_name(phandle))));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_getproplen(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct getproplen_args {
+ /*in*/
+ unsigned_cell phandle;
+ unsigned_cell name;
+ /*out*/
+ unsigned_cell proplen;
+ } args;
+ char name[32];
+ device *phandle;
+ /* read the args in */
+ if (chirp_read_t2h_args(&args, sizeof(args), 2, 1, data, processor, cia))
+ return -1;
+ phandle = external_to_device(data->root, args.phandle);
+ emul_read_string(name,
+ args.name,
+ sizeof(name),
+ processor, cia);
+ TRACE(trace_os_emul, ("getproplen - in - phandle=0x%lx(0x%lx`%s') name=`%s'\n",
+ (unsigned long)args.phandle,
+ (unsigned long)phandle,
+ (phandle == NULL ? "" : device_name(phandle)),
+ name));
+ /* find our prop and get its length */
+ if (args.phandle == 0
+ || phandle == NULL) {
+ args.proplen = -1;
+ }
+ else {
+ const device_property *prop = device_find_property(phandle, name);
+ if (prop == (device_property*)0) {
+ args.proplen = -1;
+ }
+ else {
+ args.proplen = prop->sizeof_array;
+ }
+ }
+ /* return the result */
+ TRACE(trace_os_emul, ("getproplen - out - proplen=%ld\n",
+ (unsigned long)args.proplen));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_getprop(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct getprop_args {
+ /*in*/
+ unsigned_cell phandle;
+ unsigned_cell name;
+ unsigned_cell buf;
+ unsigned_cell buflen;
+ /*out*/
+ unsigned_cell size;
+ } args;
+ char name[32];
+ device *phandle;
+ /* read in the args, the return is optional */
+ if (chirp_read_t2h_args(&args, sizeof(args), 4, -1, data, processor, cia))
+ return -1;
+ phandle = external_to_device(data->root, args.phandle);
+ emul_read_string(name,
+ args.name,
+ sizeof(name),
+ processor, cia);
+ TRACE(trace_os_emul, ("getprop - in - phandle=0x%lx(0x%lx`%s') name=`%s' buf=0x%lx buflen=%ld\n",
+ (unsigned long)args.phandle,
+ (unsigned long)phandle,
+ (phandle == NULL ? "" : device_name(phandle)),
+ name,
+ (unsigned long)args.buf,
+ (unsigned long)args.buflen));
+ /* get the property */
+ if (args.phandle == 0
+ || phandle == NULL) {
+ args.size = -1;
+ }
+ else {
+ const device_property *prop = device_find_property(phandle, name);
+ if (prop == NULL) {
+ args.size = -1;
+ }
+ else {
+ int size = args.buflen;
+ if (size > prop->sizeof_array)
+ size = prop->sizeof_array;
+ emul_write_buffer(prop->array, args.buf,
+ size,
+ processor, cia);
+ args.size = size;
+ switch (prop->type) {
+ case string_property:
+ TRACE(trace_os_emul, ("getprop - string `%s'\n",
+ device_find_string_property(phandle, name)));
+ break;
+ case ihandle_property:
+ TRACE(trace_os_emul, ("getprop - ihandle=0x%lx(0x%lx`%s')\n",
+ BE2H_cell(*(unsigned_cell*)prop->array),
+ (unsigned long)device_find_ihandle_property(phandle, name),
+ ihandle_name(device_find_ihandle_property(phandle, name))));
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ /* write back the result */
+ if (data->n_returns == 0)
+ TRACE(trace_os_emul, ("getprop - out - size=%ld (not returned)\n",
+ (unsigned long)args.size));
+ else {
+ TRACE(trace_os_emul, ("getprop - out - size=%ld\n",
+ (unsigned long)args.size));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ }
+ return 0;
+}
+
+static int
+chirp_emul_nextprop(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct nextprop_args {
+ /*in*/
+ unsigned_cell phandle;
+ unsigned_cell previous;
+ unsigned_cell buf;
+ /*out*/
+ unsigned_cell flag;
+ } args;
+ char previous[32];
+ device *phandle;
+ /* read in the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
+ return -1;
+ phandle = external_to_device(data->root, args.phandle);
+ if (args.previous != 0)
+ emul_read_string(previous,
+ args.previous,
+ sizeof(previous),
+ processor, cia);
+ else
+ /* If previous is NULL, make it look like the empty string. The
+ next property after the empty string is the first property. */
+ strcpy (previous, "");
+ TRACE(trace_os_emul, ("nextprop - in - phandle=0x%lx(0x%lx`%s') previous=`%s' buf=0x%lx\n",
+ (unsigned long)args.phandle,
+ (unsigned long)phandle,
+ (phandle == NULL ? "" : device_name(phandle)),
+ previous,
+ (unsigned long)args.buf));
+ /* find the next property */
+ if (args.phandle == 0
+ || phandle == NULL) {
+ args.flag = -1;
+ }
+ else {
+ const device_property *prev_prop = device_find_property(phandle, previous);
+ if (prev_prop == NULL) {
+ if (strcmp (previous, "") == 0)
+ args.flag = 0; /* No properties */
+ else
+ args.flag = -1; /* name invalid */
+ }
+ else {
+ const device_property *next_prop;
+ if (strcmp (previous, "") == 0) {
+ next_prop = prev_prop; /* The first property. */
+ }
+ else {
+ next_prop = device_next_property(prev_prop);
+ }
+ if (next_prop == NULL) {
+ args.flag = 0; /* last property */
+ }
+ else {
+ emul_write_buffer(next_prop->name, args.buf, strlen(next_prop->name),
+ processor, cia);
+ TRACE(trace_os_emul, ("nextprop - name=`%s'\n", next_prop->name));
+ args.flag = 1; /* worked ok */
+ }
+ }
+ }
+ /* write back the result */
+ TRACE(trace_os_emul, ("nextprop - out - flag=%ld\n",
+ (unsigned long)args.flag));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+#if 0
+static int
+chirp_emul_setprop(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ error("chirp: setprop method not implemented\n");
+ return 0;
+}
+#endif
+
+static int
+chirp_emul_canon(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct canon_args {
+ /*in*/
+ unsigned_cell device_specifier;
+ unsigned_cell buf;
+ unsigned_cell buflen;
+ /*out*/
+ unsigned_cell length;
+ } args;
+ char device_specifier[1024];
+ device *phandle;
+ const char *path;
+ int length;
+ /* read in the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
+ return -1;
+ emul_read_string(device_specifier,
+ args.device_specifier,
+ sizeof(device_specifier),
+ processor, cia);
+ TRACE(trace_os_emul, ("canon - in - device_specifier=`%s' buf=0x%lx buflen=%lx\n",
+ device_specifier,
+ (unsigned long)args.buf,
+ (unsigned long)args.buflen));
+ /* canon the name */
+ phandle = tree_find_device(data->root, device_specifier);
+ if (phandle == NULL) {
+ length = -1;
+ path = "";
+ args.length = -1;
+ }
+ else {
+ path = device_path(phandle);
+ length = strlen(path);
+ if (length >= args.buflen)
+ length = args.buflen - 1;
+ emul_write_buffer(path, args.buf, length,
+ processor, cia);
+ args.length = length;
+ }
+ /* write back the result */
+ TRACE(trace_os_emul, ("canon - out - length=%ld buf=`%s'\n",
+ (unsigned long)args.length,
+ path));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
chirp_emul_finddevice(os_emul_data *data,
cpu *processor,
unsigned_word cia)
{
- struct finddevice_args {
- unsigned32 service;
- unsigned32 n_args;
- unsigned32 n_returns;
+ struct finddevice_args {
+ /*in*/
+ unsigned_cell device_specifier;
+ /*out*/
+ unsigned_cell phandle;
+ } args;
+ char device_specifier[1024];
+ device *phandle;
+ /* get the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
+ return -1;
+ emul_read_string(device_specifier,
+ args.device_specifier,
+ sizeof(device_specifier),
+ processor, cia);
+ TRACE(trace_os_emul, ("finddevice - in - device_specifier=`%s'\n",
+ device_specifier));
+ /* find the device */
+ phandle = tree_find_device(data->root, device_specifier);
+ if (phandle == NULL)
+ args.phandle = -1;
+ else
+ args.phandle = device_to_external(phandle);
+ /* return its phandle */
+ TRACE(trace_os_emul, ("finddevice - out - phandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.phandle,
+ (unsigned long)phandle,
+ (phandle == NULL ? "" : device_name(phandle))));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_instance_to_path(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct instance_to_path_args {
+ /*in*/
+ unsigned_cell ihandle;
+ unsigned_cell buf;
+ unsigned_cell buflen;
+ /*out*/
+ unsigned_cell length;
+ } args;
+ device_instance *ihandle;
+ const char *path;
+ int length;
+ /* get the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
+ return -1;
+ ihandle = external_to_device_instance(data->root, args.ihandle);
+ TRACE(trace_os_emul, ("instance-to-path - in - ihandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n",
+ (unsigned long)args.ihandle,
+ (unsigned long)ihandle,
+ ihandle_name(ihandle),
+ (unsigned long)args.buf,
+ (unsigned long)args.buflen));
+ /* get the devices name */
+ if (ihandle == NULL) {
+ args.length = -1;
+ path = "(null)";
+ }
+ else {
+ path = device_instance_path(ihandle);
+ length = strlen(path);
+ if (length >= args.buflen)
+ length = args.buflen - 1;
+ emul_write_buffer(path, args.buf, length,
+ processor, cia);
+ args.length = length;
+ }
+ /* return its phandle */
+ TRACE(trace_os_emul, ("instance-to-path - out - length=%ld buf=`%s')\n",
+ (unsigned long)args.length,
+ path));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_package_to_path(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct package_to_path_args {
+ /*in*/
+ unsigned_cell phandle;
+ unsigned_cell buf;
+ unsigned_cell buflen;
+ /*out*/
+ unsigned_cell length;
+ } args;
+ device *phandle;
+ const char *path;
+ /* get the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
+ return -1;
+ phandle = external_to_device(data->root, args.phandle);
+ TRACE(trace_os_emul, ("package-to-path - in - phandle=0x%lx(0x%lx`%s') buf=0x%lx buflen=%ld\n",
+ (unsigned long)args.phandle,
+ (unsigned long)phandle,
+ (phandle == NULL ? "" : device_name(phandle)),
+ (unsigned long)args.buf,
+ (unsigned long)args.buflen));
+ /* get the devices name */
+ if (phandle == NULL) {
+ args.length = -1;
+ path = "(null)";
+ }
+ else {
+ int length;
+ path = device_path(phandle);
+ length = strlen(path);
+ if (length >= args.buflen)
+ length = args.buflen - 1;
+ emul_write_buffer(path, args.buf, length,
+ processor, cia);
+ args.length = length;
+ }
+ /* return its phandle */
+ TRACE(trace_os_emul, ("package-to-path - out - length=%ld buf=`%s')\n",
+ (unsigned long)args.length,
+ path));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_call_method(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct call_method_args {
+ /*in*/
+ unsigned_cell method;
+ unsigned_cell ihandle;
+ /*in/out*/
+ unsigned_cell stack[13]; /*6in + 6out + catch */
+ } args;
+ char method[32];
+ device_instance *ihandle;
+ /* some useful info about our mini stack */
+ int n_stack_args;
+ int n_stack_returns;
+ int stack_catch_result;
+ int stack_returns;
+ /* read the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), -1, -1, data, processor, cia))
+ return -1;
+ emul_read_string(method,
+ args.method,
+ sizeof(method),
+ processor, cia);
+ ihandle = external_to_device_instance(data->root, args.ihandle);
+ n_stack_args = data->n_args - 2;
+ n_stack_returns = data->n_returns - 1;
+ stack_catch_result = n_stack_args;
+ stack_returns = stack_catch_result + 1;
+ TRACE(trace_os_emul, ("call-method - in - n_args=%ld n_returns=%ld method=`%s' ihandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)data->n_args,
+ (unsigned long)data->n_returns,
+ method,
+ (unsigned long)args.ihandle,
+ (unsigned long)ihandle,
+ ihandle_name(ihandle)));
+ /* see if we can emulate this method */
+ if (ihandle == NULL) {
+ /* OpenFirmware doesn't define this error */
+ error("chirp: invalid ihandle passed to call-method method");
+ }
+ else {
+ args.stack[stack_catch_result] =
+ device_instance_call_method(ihandle,
+ method,
+ n_stack_args,
+ &args.stack[0],
+ n_stack_returns,
+ &args.stack[stack_returns]);
+ }
+ /* finished */
+ TRACE(trace_os_emul, ("call-method - out - catch-result=%ld\n",
+ (unsigned long)args.stack[stack_catch_result]));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+
+/* Device I/O */
+
+static int
+chirp_emul_open(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct open_args {
+ /*in*/
+ unsigned_cell device_specifier;
+ /*out*/
+ unsigned_cell ihandle;
+ } args;
+ char device_specifier[1024];
+ device_instance *ihandle;
+ /* read the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
+ return -1;
+ emul_read_string(device_specifier,
+ args.device_specifier,
+ sizeof(device_specifier),
+ processor, cia);
+ TRACE(trace_os_emul, ("open - in - device_specifier=`%s'\n",
+ device_specifier));
+ /* open the device */
+ ihandle = tree_instance(data->root, device_specifier);
+ if (ihandle == NULL)
+ args.ihandle = -1;
+ else
+ args.ihandle = device_instance_to_external(ihandle);
+ /* return the ihandle result */
+ TRACE(trace_os_emul, ("open - out - ihandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.ihandle,
+ (unsigned long)ihandle,
+ ihandle_name(ihandle)));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_close(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct close_args {
+ /*in*/
+ unsigned_cell ihandle;
+ /*out*/
+ } args;
+ device_instance *ihandle;
+ /* read the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 1, 0, data, processor, cia))
+ return -1;
+ ihandle = external_to_device_instance(data->root, args.ihandle);
+ TRACE(trace_os_emul, ("close - in - ihandle=0x%lx(0x%lx`%s')\n",
+ (unsigned long)args.ihandle,
+ (unsigned long)ihandle,
+ ihandle_name(ihandle)));
+ /* close the device */
+ if (ihandle == NULL) {
+ /* OpenFirmware doesn't define this error */
+ error("chirp: invalid ihandle passed to close method");
+ }
+ else {
+ device_instance_delete(ihandle);
+ }
+ /* return the ihandle result */
+ TRACE(trace_os_emul, ("close - out\n"));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_read(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct read_args {
/*in*/
- unsigned32 device_specifier;
+ unsigned_cell ihandle;
+ unsigned_cell addr;
+ unsigned_cell len;
/*out*/
- unsigned32 phandle;
+ unsigned_cell actual;
} args;
- char device_specifier[1024];
- device *dev;
- emul_read_buffer(&args, data->arguments,
- sizeof(args),
- processor, cia);
- if (T2H_4(args.n_args) != 1 || T2H_4(args.n_returns) != 1)
+ char buf[1024];
+ device_instance *ihandle;
+ /* read the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
return -1;
- emul_read_string(device_specifier,
- T2H_4(args.device_specifier),
- sizeof(device_specifier),
- processor, cia);
- dev = device_tree_find_device(data->root,
- device_specifier);
- if (dev == (device*)0)
- args.phandle = -1;
- else
- args.phandle = cap_external(data->phandles, dev);
- emul_write_buffer(&args, data->arguments,
- sizeof(args),
- processor, cia);
+ ihandle = external_to_device_instance(data->root, args.ihandle);
+ TRACE(trace_os_emul, ("read - in - ihandle=0x%lx(0x%lx`%s') addr=0x%lx len=%ld\n",
+ (unsigned long)args.ihandle,
+ (unsigned long)ihandle,
+ ihandle_name(ihandle),
+ (unsigned long)args.addr,
+ (unsigned long)args.len));
+ if (ihandle == NULL) {
+ /* OpenFirmware doesn't define this error */
+ error("chirp: invalid ihandle passed to read method");
+ }
+ else {
+ /* do the reads */
+ int actual = 0;
+ while (actual < args.len) {
+ int remaining = args.len - actual;
+ int to_read = (remaining <= sizeof(buf) ? remaining : sizeof(buf));
+ int nr_read = device_instance_read(ihandle, buf, to_read);
+ if (nr_read < 0) {
+ actual = nr_read; /* the error */
+ break;
+ }
+ else if (nr_read == 0) {
+ break;
+ }
+ emul_write_buffer(buf,
+ args.addr + actual,
+ nr_read,
+ processor, cia);
+ actual += nr_read;
+ }
+ if (actual >= 0) {
+ args.actual = actual;
+ if (actual < sizeof(buf))
+ buf[actual] = '\0';
+ else
+ buf[sizeof(buf) - 1] = '\0';
+ }
+ else {
+ switch (actual) {
+ case sim_io_eof:
+ args.actual = 0;
+ break;
+ case sim_io_not_ready:
+ ASSERT(sim_io_not_ready == -2);
+ args.actual = sim_io_not_ready;
+ break;
+ default:
+ error("Bad error value %ld", (long)actual);
+ break;
+ }
+ }
+ }
+ /* return the result */
+ TRACE(trace_os_emul, ("read - out - actual=%ld `%s'\n",
+ (long)args.actual,
+ ((args.actual > 0 && args.actual < sizeof(buf)) ? buf : "")
+ ));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
return 0;
}
-static unsigned_word
-chirp_emul_getprop(os_emul_data *data,
- cpu *processor,
- unsigned_word cia)
+static int
+chirp_emul_write(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
{
- struct getprop_args {
- unsigned32 service;
- unsigned32 n_args;
- unsigned32 n_returns;
+ struct write_args {
/*in*/
- unsigned32 phandle;
- unsigned32 name;
- unsigned32 buf;
- unsigned32 buflen;
+ unsigned_cell ihandle;
+ unsigned_cell addr;
+ unsigned_cell len;
/*out*/
- unsigned32 size;
+ unsigned_cell actual;
} args;
- char name[32];
- device *dev;
- const device_property *prop;
- emul_read_buffer(&args, data->arguments,
- sizeof(args),
- processor, cia);
- if (T2H_4(args.n_args) != 4 || T2H_4(args.n_returns) != 1)
- return -1;
- /* read in the arguments */
- dev = cap_internal(data->phandles, args.phandle);
- if (dev == (device*)0)
+ char buf[1024];
+ device_instance *ihandle;
+ int actual;
+ /* get the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
return -1;
- emul_read_string(name,
- T2H_4(args.name),
- sizeof(name),
+ actual = args.len;
+ if (actual >= sizeof(buf))
+ actual = sizeof(buf) - 1;
+ emul_read_buffer(buf,
+ args.addr,
+ actual,
processor, cia);
- prop = device_find_property(dev, name);
- if (prop == (device_property*)0) {
- args.size = -1;
+ buf[actual] = '\0';
+ ihandle = external_to_device_instance(data->root, args.ihandle);
+ TRACE(trace_os_emul, ("write - in - ihandle=0x%lx(0x%lx`%s') `%s' (%ld)\n",
+ (unsigned long)args.ihandle,
+ (unsigned long)ihandle,
+ ihandle_name(ihandle),
+ buf, (long)actual));
+ if (ihandle == NULL) {
+ /* OpenFirmware doesn't define this error */
+ error("chirp: invalid ihandle passed to write method");
}
else {
- int size = T2H_4(args.buflen);
- if (size > prop->sizeof_array)
- size = prop->sizeof_array;
- emul_write_buffer(prop->array, T2H_4(args.buf),
- size,
- processor, cia);
- args.size = H2T_4(size);
+ /* write it out */
+ actual = device_instance_write(ihandle, buf, actual);
+ if (actual < 0)
+ args.actual = 0;
+ else
+ args.actual = actual;
}
- emul_write_buffer(&args, data->arguments,
- sizeof(args),
- processor, cia);
+ /* return the result */
+ TRACE(trace_os_emul, ("write - out - actual=%ld\n",
+ (long)args.actual));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
return 0;
}
-static unsigned_word
-chirp_emul_write(os_emul_data *data,
+static int
+chirp_emul_seek(os_emul_data *data,
cpu *processor,
unsigned_word cia)
{
- struct write_args {
- unsigned32 service;
- unsigned32 n_args;
- unsigned32 n_returns;
+ struct seek_args {
/*in*/
- unsigned32 ihandle;
- unsigned32 addr;
- unsigned32 len;
+ unsigned_cell ihandle;
+ unsigned_cell pos_hi;
+ unsigned_cell pos_lo;
/*out*/
- unsigned32 actual;
+ unsigned_cell status;
} args;
- char buf[1024];
- int actual;
- emul_read_buffer(&args, data->arguments,
- sizeof(args),
- processor, cia);
- if (T2H_4(args.n_args) != 3 || T2H_4(args.n_returns) != 1)
+ int status;
+ device_instance *ihandle;
+ /* get the args */
+ if (chirp_read_t2h_args(&args, sizeof(args), 3, 1, data, processor, cia))
+ return -1;
+ ihandle = external_to_device_instance(data->root, args.ihandle);
+ TRACE(trace_os_emul, ("seek - in - ihandle=0x%lx(0x%lx`%s') pos.hi=0x%lx pos.lo=0x%lx\n",
+ (unsigned long)args.ihandle,
+ (unsigned long)ihandle,
+ ihandle_name(ihandle),
+ args.pos_hi, args.pos_lo));
+ if (ihandle == NULL) {
+ /* OpenFirmware doesn't define this error */
+ error("chirp: invalid ihandle passed to seek method");
+ }
+ else {
+ /* seek it out */
+ status = device_instance_seek(ihandle, args.pos_hi, args.pos_lo);
+ args.status = status;
+ }
+ /* return the result */
+ TRACE(trace_os_emul, ("seek - out - status=%ld\n",
+ (long)args.status));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+
+/* memory */
+
+static int
+chirp_emul_claim(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ /* NOTE: the client interface claim routine is *very* different to
+ the "claim" method described in IEEE-1275 appendix A. The latter
+ uses real addresses while this uses virtual (effective)
+ addresses. */
+ struct claim_args {
+ /* in */
+ unsigned_cell virt;
+ unsigned_cell size;
+ unsigned_cell align;
+ /* out */
+ unsigned_cell baseaddr;
+ } args;
+ /* read the args */
+ if (chirp_read_t2h_args(&args, sizeof(args),
+ 3 /*n_args*/, 1 /*n_returns*/,
+ data, processor, cia))
+ return -1;
+ TRACE(trace_os_emul, ("claim - in - virt=0x%lx size=%ld align=%d\n",
+ (unsigned long)args.virt,
+ (long int)args.size,
+ (int)args.align));
+ /* use the memory device to allocate (real) memory at the requested
+ address */
+ {
+ device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory");
+ unsigned_cell mem_in[3];
+ unsigned_cell mem_out[1];
+ mem_in[0] = args.align; /*top-of-stack*/
+ mem_in[1] = args.size;
+ mem_in[2] = args.virt;
+ if (device_instance_call_method(memory, "claim",
+ 3, mem_in, 1, mem_out) < 0)
+ error("chirp: claim failed to allocate memory virt=0x%lx size=%ld align=%d",
+ (unsigned long)args.virt,
+ (long int)args.size,
+ (int)args.align);
+ args.baseaddr = mem_out[0];
+ }
+ /* if using virtual addresses, create a 1-1 map of this address space */
+ if (!data->real_mode) {
+ error("chirp: claim method does not support virtual mode");
+ }
+ /* return the base address */
+ TRACE(trace_os_emul, ("claim - out - baseaddr=0x%lx\n",
+ (unsigned long)args.baseaddr));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+static int
+chirp_emul_release(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ /* NOTE: the client interface release routine is *very* different to
+ the "claim" method described in IEEE-1275 appendix A. The latter
+ uses real addresses while this uses virtual (effective)
+ addresses. */
+ struct claim_args {
+ /* in */
+ unsigned_cell virt;
+ unsigned_cell size;
+ /* out */
+ } args;
+ /* read the args */
+ if (chirp_read_t2h_args(&args, sizeof(args),
+ 2 /*n_args*/, 0 /*n_returns*/,
+ data, processor, cia))
return -1;
+ TRACE(trace_os_emul, ("release - in - virt=0x%lx size=%ld\n",
+ (unsigned long)args.virt,
+ (long int)args.size));
+ /* use the memory device to release (real) memory at the requested
+ address */
+ {
+ device_instance *memory = tree_find_ihandle_property(data->root, "/chosen/memory");
+ unsigned_cell mem_in[2];
+ mem_in[0] = args.size;
+ mem_in[1] = args.virt;
+ if (device_instance_call_method(memory, "release",
+ 2, mem_in, 0, NULL) < 0)
+ error("chirp: claim failed to release memory virt=0x%lx size=%ld",
+ (unsigned long)args.virt,
+ (long int)args.size);
+ }
+ /* if using virtual addresses, remove the 1-1 map of this address space */
+ if (!data->real_mode) {
+ error("chirp: release method does not support virtual mode");
+ }
+ /* return the base address */
+ TRACE(trace_os_emul, ("release - out\n"));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+
+/* Control transfer */
+
+static int
+chirp_emul_boot(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ /* unlike OpenFirmware this one can take an argument */
+ struct boot_args {
+ /*in*/
+ unsigned_cell bootspec;
+ /*out*/
+ } args;
+ char bootspec[1024];
/* read in the arguments */
- actual = T2H_4(args.len);
- if (actual > sizeof(buf))
- actual = sizeof(buf);
- emul_read_buffer(buf,
- T2H_4(args.addr),
- actual,
- processor, cia);
- /* write it out */
- write(BE2H_4(args.ihandle), buf, actual);
- args.actual = H2T_4(actual);
- emul_write_buffer(&args, data->arguments,
- sizeof(args),
- processor, cia);
+ if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia))
+ cpu_halt(processor, cia, was_exited, -1);
+ if (args.bootspec != 0)
+ emul_read_string(bootspec, args.bootspec, sizeof(bootspec),
+ processor, cia);
+ else
+ strcpy(bootspec, "(null)");
+ TRACE(trace_os_emul, ("boot - in bootspec=`%s'\n", bootspec));
+ /* just report this and exit */
+ printf_filtered("chrp: boot %s called, exiting.\n", bootspec);
+ cpu_halt(processor, cia, was_exited, 0);
+ return 0;
+}
+
+static int
+chirp_emul_enter(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ error("chirp: enter method not implemented\n");
return 0;
}
-static unsigned_word
+static int
chirp_emul_exit(os_emul_data *data,
- cpu *processor,
- unsigned_word cia)
+ cpu *processor,
+ unsigned_word cia)
+{
+ /* unlike OpenBoot this one can take an argument */
+ struct exit_args {
+ /*in*/
+ signed_cell status;
+ /*out*/
+ } args;
+ if (chirp_read_t2h_args(&args, sizeof(args), -1, 0, data, processor, cia))
+ cpu_halt(processor, cia, was_exited, -1);
+ cpu_halt(processor, cia, was_exited, args.status);
+ return 0;
+}
+
+static int
+chirp_emul_chain(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
{
- error("chirp_emul_exit not implemnented\n");
+ error("chirp: chain method not implemented\n");
return 0;
}
-chirp_services services[] = {
- { "finddevice", chirp_emul_finddevice },
+/* user interface */
+
+static int
+chirp_emul_interpret(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ error("chirp: interpret method not implemented\n");
+ return 0;
+}
+
+static int
+chirp_emul_set_callback(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ error("chirp: set_callback method not implemented\n");
+ return 0;
+}
+
+static int
+chirp_emul_set_symbol_lookup(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ error("chirp: set_symbol_lookup method not implemented\n");
+ return 0;
+}
+
+
+/* Time */
+
+static int
+chirp_emul_milliseconds(os_emul_data *data,
+ cpu *processor,
+ unsigned_word cia)
+{
+ struct test_args {
+ /*in*/
+ /*out*/
+ unsigned_cell ms;
+ } args;
+ unsigned64 time;
+ /* read in the arguments */
+ if (chirp_read_t2h_args(&args, sizeof(args), 1, 1, data, processor, cia))
+ return -1;
+ /* make up a number */
+ time = event_queue_time(psim_event_queue(cpu_system(processor))) / 1000000;
+ args.ms = time;
+ /* write the arguments back out */
+ TRACE(trace_os_emul, ("milliseconds - out - ms=%ld\n",
+ (unsigned long)args.ms));
+ chirp_write_h2t_args(&args,
+ sizeof(args),
+ data,
+ processor, cia);
+ return 0;
+}
+
+
+
+
+static chirp_services services[] = {
+
+ /* client interface */
+ { "test", chirp_emul_test },
+
+ /* device tree */
+ { "peer", chirp_emul_peer },
+ { "child", chirp_emul_child },
+ { "parent", chirp_emul_parent },
+ { "instance-to-package", chirp_emul_instance_to_package },
+ { "getproplen", chirp_emul_getproplen },
{ "getprop", chirp_emul_getprop },
+ { "nextprop", chirp_emul_nextprop },
+ /* { "setprop", chirp_emul_setprop }, */
+ { "canon", chirp_emul_canon },
+ { "finddevice", chirp_emul_finddevice },
+ { "instance-to-path", chirp_emul_instance_to_path },
+ { "package-to-path", chirp_emul_package_to_path },
+ { "call-method", chirp_emul_call_method },
+
+ /* device I/O */
+ { "open", chirp_emul_open },
+ { "close", chirp_emul_close },
+ { "read", chirp_emul_read },
+ { "write", chirp_emul_write },
+ { "seek", chirp_emul_seek },
{ "write", chirp_emul_write },
+
+ /* memory */
+ { "claim", chirp_emul_claim },
+ { "release", chirp_emul_release },
+
+ /* control transfer */
+ { "boot", chirp_emul_boot },
+ { "enter", chirp_emul_enter },
{ "exit", chirp_emul_exit },
+ { "chain", chirp_emul_chain },
+
+ /* user interface */
+ { "interpret", chirp_emul_interpret },
+ { "set_callback", chirp_emul_set_callback },
+ { "set_symbol_lookup", chirp_emul_set_symbol_lookup },
+
+ /* time */
+ { "milliseconds", chirp_emul_milliseconds },
+
{ 0, /* sentinal */ },
};
#ifndef CHIRP_START_ADDRESS
#define CHIRP_START_ADDRESS 0x80000000
#endif
+#ifndef CHIRP_LOAD_BASE
+#define CHIRP_LOAD_BASE -1
+#endif
+
typedef struct _chirp_note_desc {
signed32 real_mode;
signed32 real_size;
signed32 virt_base;
signed32 virt_size;
+ signed32 load_base;
} chirp_note_desc;
+typedef enum {
+ note_missing,
+ note_found,
+ note_correct,
+} note_found_status;
typedef struct _chirp_note {
chirp_note_desc desc;
- int found;
+ note_found_status found;
} chirp_note;
typedef struct _chirp_note_head {
head.type = bfd_get_32(image, (void*)&head.type);
if (head.type != 0x1275)
return;
- note->found = 1;
/* check the name field */
- if (head.namesz > sizeof(name))
- return;
+ if (head.namesz > sizeof(name)) {
+ error("chirp: note name too long (%d > %d)\n", (int)head.namesz, sizeof(name));
+ }
if (!bfd_get_section_contents(image, sect,
- name, sizeof(head), head.namesz))
- return;
- if (strcmp(name, "PowerPC") != 0)
+ name, sizeof(head), head.namesz)) {
+ error("chirp: note name unreadable\n");
+ }
+ if (strcmp(name, "PowerPC") != 0) {
+ printf_filtered("chirp: note name (%s) not `PowerPC'\n", name);
+ }
+ /* check the size */
+ if (head.descsz == sizeof(note->desc) - sizeof(signed32)) {
+ sim_io_printf_filtered("chirp: note descriptor missing load-base\n");
+ }
+ else if (head.descsz != sizeof(note->desc)) {
+ sim_io_printf_filtered("chirp: note descriptor of wrong size\n");
+ note->found = note_found;
return;
+ }
+ note->found = note_correct;
/* get the contents */
if (!bfd_get_section_contents(image, sect,
- ¬e->desc, sizeof(head) + head.namesz,
- head.descsz))
- return;
+ ¬e->desc, /* page align start */
+ ((sizeof(head) + head.namesz) + 3) & ~3,
+ head.descsz)) {
+ error("chirp: note descriptor unreadable\n");
+ }
note->desc.real_mode = bfd_get_32(image, (void*)¬e->desc.real_mode);
note->desc.real_base = bfd_get_32(image, (void*)¬e->desc.real_base);
note->desc.real_size = bfd_get_32(image, (void*)¬e->desc.real_size);
note->desc.virt_base = bfd_get_32(image, (void*)¬e->desc.virt_base);
note->desc.virt_size = bfd_get_32(image, (void*)¬e->desc.virt_size);
- note->found = 2;
+ if (head.descsz == sizeof(note->desc))
+ note->desc.load_base = bfd_get_32(image, (void*)¬e->desc.load_base);
+ else
+ note->desc.load_base = (signed32)-1;
}
}
bfd *image,
const char *name)
{
- os_emul_data *data;
+ os_emul_data *chirp;
+ device *node;
chirp_note note;
+ int i;
/* Sanity check that this really is the chosen emulation */
if (name == NULL && image == NULL)
&& strcmp(name, "openboot") != 0)
return NULL;
- /* look for an elf note section */
+ /* look for an elf note section, enter its values into the device tree */
memset(¬e, 0, sizeof(note));
if (image != NULL)
bfd_map_over_sections(image, map_over_chirp_note, ¬e);
- if (name == NULL && image != NULL && !note.found)
+ if (name == NULL && image != NULL && note.found == note_missing)
return NULL;
- {
- const unsigned_word memory_size = 0x200000;
-
- /* the hash table */
- const unsigned nr_page_table_entry_groups = (memory_size < 0x800000
- ? 1024 /* min allowed */
- : (memory_size / 4096 / 2));
- const unsigned sizeof_htab = nr_page_table_entry_groups * 64;
- const unsigned_word htab_ra = memory_size - sizeof_htab;
-
- /* a page for firmware calls */
- const unsigned_word sizeof_code = 4096;
- const unsigned_word code_ra = htab_ra - sizeof_code;
-
- /* the stack */
- const unsigned sizeof_stack = 32 * 1024;
- const unsigned_word stack_ra = code_ra - sizeof_stack;
-
- /* the firmware's home */
- const int real_mode = 0;
- /* const unsigned_word real_base = stack_ra; */
- /* const unsigned real_size = memory_size - real_base; */
- const unsigned_word virt_base = CHIRP_START_ADDRESS;
- /* const unsigned virt_size = real_size;*/
-
- /* the virtual addresses */
- const unsigned_word stack_va = virt_base;
- const unsigned_word code_va = stack_va + sizeof_stack;
- const unsigned_word htab_va = code_va + sizeof_code;
-
- /* options */
- {
- device *options = device_tree_add_found(root, "/", "options");
- device_add_integer_property(options,
- "smp",
- MAX_NR_PROCESSORS);
- device_add_boolean_property(options,
- "little-endian?",
- !image->xvec->byteorder_big_p);
- device_add_string_property(options,
- "env",
- "operating");
- device_add_boolean_property(options,
- "strict-alignment?",
- (WITH_ALIGNMENT == STRICT_ALIGNMENT
- || !image->xvec->byteorder_big_p));
- device_add_boolean_property(options,
- "floating-point?",
- WITH_FLOATING_POINT);
- device_add_string_property(options,
- "os-emul",
- "chirp");
- }
-
- /* hardware */
- device_tree_add_found_uw_u_u(root, "/", "memory",
- 0, memory_size, access_read_write_exec);
-
- /* initialization */
- {
- device *init = device_tree_add_found(root, "/", "init");
- {
- device *init_register = device_tree_add_found(init, "", "register");
- device_add_integer_property(init_register,
- "pc",
- bfd_get_start_address(image));
- device_add_integer_property(init_register,
- "sp",
- stack_va + sizeof_stack - 16);
-
- /* init the code callback */
- device_add_integer_property(init_register,
- "r5",
- code_va);
- device_tree_add_found_uw_u_u(init, "", "data", code_ra, 4, 0x1);
- device_tree_add_found_uw_u_u(init, "", "data", code_ra+16, 4, 0x1);
- device_add_integer_property(init_register,
- "msr",
- (msr_machine_check_enable
- | (real_mode
- ? 0
- : (msr_instruction_relocate
- | msr_data_relocate))
- | (image->xvec->byteorder_big_p
- ? 0
- : (msr_little_endian_mode
- | msr_interrupt_little_endian_mode
- ))));
- device_add_integer_property(init_register,
- "sdr1",
- (htab_ra
- | MASK32(16, 22)
- | ((sizeof_htab - 1) >> 16)));
- /* FIXME */
- device_add_integer_property(init_register,
- "sr8",
- 0x00fffff8);
- device_add_integer_property(init_register,
- "sr9",
- 0x00fffff9);
-
- { /* hash table and vm */
- device *htab_root = device_tree_add_found_uw_u(init, "", "htab",
- htab_ra, sizeof_htab);
- device_tree_add_found_uw_uw_u_u_u(htab_root, "", "pte",
- stack_ra, stack_va, sizeof_stack,
- 0x7/*wimg*/, 0x2/*pp*/);
- device_tree_add_found_uw_uw_u_u_u(htab_root, "", "pte",
- code_ra, code_va, sizeof_code,
- 0x7/*wimg*/, 0x2/*pp*/);
- device_tree_add_found_uw_uw_u_u_u(htab_root, "", "pte",
- htab_ra, htab_va, sizeof_htab,
- 0x7/*wimg*/, 0x2/*pp*/);
- device_tree_add_found_uw_u_u_c(htab_root, "", "pte",
- 0x4000, /*magic*/
- 0x7/*wimg*/, 0x2/*pp*/,
- bfd_get_filename (image));
- }
- }
- }
-
- { /* chosen options */
- device *chosen = device_tree_add_found(root, "/", "chosen");
- device_add_integer_property(chosen,
- "stdout",
- 1);
- }
-
- /* FIXME - should come from the device tree */
- data = ZALLOC(os_emul_data);
- data->serving_instruction_ea = CHIRP_START_ADDRESS + sizeof_stack;;
- data->catching_instruction_ea = CHIRP_START_ADDRESS + sizeof_stack + 16;
- data->phandles = cap_create("chirp");
- data->root = root;
- return data;
+ /* Assume that it is a chirp emulation */
+
+ chirp = ZALLOC(os_emul_data);
+ chirp->root = root;
+ chirp->services = services;
+
+ /* the root node */
+ tree_parse(root, "/name \"gpl,clayton");
+
+ /* default options */
+ emul_add_tree_options(root, image, "chirp", "oea",
+ 0 /*oea-interrupt-prefix*/);
+
+ /* hardware */
+ emul_add_tree_hardware(root);
+
+ /* basic information */
+ chirp->memory_size
+ = tree_find_integer_property(root, "/openprom/options/oea-memory-size");
+ chirp->little_endian
+ = tree_find_boolean_property(root, "/options/little-endian?");
+ chirp->floating_point_available
+ = tree_find_boolean_property(root, "/openprom/options/floating-point?");
+ chirp->interrupt_prefix =
+ tree_find_integer_property(root, "/openprom/options/oea-interrupt-prefix");
+
+
+ /* Perform an interum layout of the openboot firmware in memory */
+
+
+ /* a page for firmware calls */
+ chirp->sizeof_code = 4096;
+ chirp->code_offset = 0x4000; /* possible space for interrupt table */
+
+ /* the stack */
+ chirp->sizeof_stack = 32 * 1024;
+ chirp->stack_offset = chirp->code_offset + chirp->sizeof_code;
+
+ /* the hash table */
+ if (!note.desc.real_mode) {
+ chirp->nr_page_table_entry_groups = (chirp->memory_size < 0x800000
+ ? 1024 /* min allowed */
+ : (chirp->memory_size / 4096 / 2));
+ chirp->sizeof_htab = chirp->nr_page_table_entry_groups * 64;
+ }
+ chirp->htab_offset = chirp->stack_offset + chirp->sizeof_stack;
+
+ /* the actual amount of space needed */
+ chirp->real_size = chirp->htab_offset + chirp->sizeof_htab;
+
+
+ /* now go through and see if it fits in what is available */
+
+
+ /* resolve real-mode? */
+ if (note.found == note_correct)
+ chirp->real_mode = note.desc.real_mode;
+ else if (tree_find_property(root, "/options/real-mode?") != NULL)
+ chirp->real_mode = tree_find_boolean_property(root, "/options/real-mode?");
+ else
+ chirp->real_mode = 0;
+ if (tree_find_property(root, "/options/real-mode?") != NULL) {
+ if (!chirp->real_mode
+ != !tree_find_boolean_property(root, "/options/real-mode?"))
+ error("chirp: /options/real-mode? conflicts with note section\n");
+ }
+ else
+ tree_parse(root, "/options/real-mode? %s",
+ chirp->real_mode ? "true" : "false");
+
+ /* resolve real-base */
+ if (note.found == note_correct
+ && note.desc.real_base != (signed32)-1)
+ chirp->real_base = note.desc.real_base;
+ else if (tree_find_property(root, "/options/real-base") != NULL)
+ chirp->real_base = tree_find_integer_property(root, "/options/real-base");
+ else
+ chirp->real_base = chirp->memory_size - chirp->real_size;
+ if (tree_find_property(root, "/options/real-base") != NULL) {
+ if (chirp->real_base != tree_find_integer_property(root, "/options/real-base"))
+ error("chirp: /options/real-base conflicts with note section\n");
+ }
+ else
+ tree_parse(root, "/options/real-base 0x%lx",
+ (unsigned long)chirp->real_base);
+
+ /* resolve real-size */
+ if (note.found == note_correct
+ && note.desc.real_size != (signed32)-1
+ && note.desc.real_size != 0
+ && chirp->real_size > note.desc.real_size)
+ error("chirp: insufficient physical memory for firmware\n");
+ if (tree_find_property(root, "/options/real-size") != NULL) {
+ if (chirp->real_size > tree_find_integer_property(root, "/options/real-size"))
+ error("chirp: /options/real-size conflicts with note section\n");
+ }
+ else
+ tree_parse(root, "/options/real-size 0x%lx",
+ (unsigned long)chirp->real_size);
+
+ /* resolve virt-base */
+ if (chirp->real_mode)
+ chirp->virt_base = chirp->real_base;
+ else if (note.found == note_correct && note.desc.virt_base != -1)
+ chirp->virt_base = note.desc.virt_base;
+ else if (tree_find_property(root, "/options/virt-base") != NULL)
+ chirp->virt_base = tree_find_integer_property(root, "/options/virt-base");
+ else
+ chirp->virt_base = CHIRP_START_ADDRESS;
+ if (tree_find_property(root, "/options/virt-base") != NULL) {
+ unsigned_word virt_base = tree_find_integer_property(root, "/options/virt-base");
+ if (virt_base != -1 && chirp->virt_base != virt_base)
+ error("chirp: /options/virt-base conflicts with note section\n");
+ }
+ else
+ tree_parse(root, "/options/virt-base 0x%lx",
+ chirp->real_mode ? -1 : (unsigned long)chirp->virt_base);
+
+ /* resolve virt-size */
+ chirp->virt_size = chirp->real_size;
+ if (note.found == note_correct
+ && note.desc.virt_size != (signed32)-1
+ && note.desc.virt_size != 0
+ && !chirp->real_mode
+ && chirp->virt_size > note.desc.virt_size)
+ error("chirp: insufficent virtual memory for firmware\n");
+ if (tree_find_property(root, "/options/virt-size") != NULL) {
+ if (chirp->virt_size > tree_find_integer_property(root, "/options/virt-size"))
+ error("chirp: /options/virt-size conflicts with note section\n");
+ }
+ else
+ tree_parse(root, "/options/virt-size 0x%lx",
+ chirp->real_mode ? -1 : (unsigned long)chirp->virt_size);
+
+ /* resolve load-base */
+ if (note.found == note_correct
+ && note.desc.load_base != (signed32)-1)
+ chirp->load_base = note.desc.load_base;
+ else if (tree_find_property(root, "/options/load-base") != NULL)
+ chirp->load_base = tree_find_integer_property(root, "/options/load-base");
+ else
+ chirp->load_base = CHIRP_LOAD_BASE;
+ if (tree_find_property(root, "/options/load-base") != NULL) {
+ if (chirp->load_base != tree_find_integer_property(root, "/options/load-base"))
+ error("chirp: /options/load-base conflicts with note section\n");
+ }
+ else
+ tree_parse(root, "/options/load-base 0x%lx",
+ (unsigned long)chirp->load_base);
+
+ /* now adjust the preliminary firmware addresses to final values */
+ chirp->code_ra = chirp->code_offset + chirp->real_base;
+ chirp->stack_ra = chirp->stack_offset + chirp->real_base;
+ chirp->htab_ra = chirp->htab_offset + chirp->real_base;
+
+ /* the virtual addresses. In real mode these are real addresses. */
+
+ chirp->code_va = chirp->code_offset + chirp->virt_base;
+ chirp->stack_va = chirp->stack_offset + chirp->virt_base;
+ chirp->htab_va = chirp->htab_offset + chirp->virt_base;
+
+ chirp->code_client_va = chirp->code_va;
+ chirp->code_client_ra = chirp->code_ra;
+
+ chirp->code_callback_va = chirp->code_client_va + 16;
+ chirp->code_callback_ra = chirp->code_client_ra + 16;
+
+ chirp->code_loop_va = chirp->code_callback_va + 16;
+ chirp->code_loop_ra = chirp->code_callback_ra + 16;
+
+ /* initialization */
+
+ tree_parse(root, "/openprom/init");
+ tree_parse(root, "/openprom/init/register");
+ tree_parse(root, "/openprom/init/register/0.pc 0x%lx",
+ (unsigned long)bfd_get_start_address(image));
+ tree_parse(root, "/openprom/init/register/pc 0x%lx",
+ (unsigned long)chirp->code_loop_va);
+ tree_parse(root, "/openprom/init/register/msr 0x%x",
+ (msr_machine_check_enable
+ | (chirp->real_mode
+ ? 0
+ : (msr_instruction_relocate
+ | msr_data_relocate))
+ | (chirp->little_endian
+ ? (msr_little_endian_mode
+ | msr_interrupt_little_endian_mode)
+ : 0)
+ | (chirp->floating_point_available
+ ? msr_floating_point_available
+ : 0)
+ | (chirp->interrupt_prefix
+ ? msr_interrupt_prefix
+ : 0)
+ ));
+ tree_parse(root, "/openprom/init/register/sdr1 0x%lx",
+ (unsigned long)(chirp->htab_ra
+ | MASK32(16, 22)
+ | ((chirp->sizeof_htab - 1) >> 16)));
+ /* make certain that the segment registers map straight through */
+ for (i = 0; i < 16; i++) {
+ tree_parse(root, "/openprom/init/register/sr%d 0x%lx",
+ i, (unsigned long)i);
+ }
+
+ /* establish an initial state for all processors */
+
+
+ /* the client interface address */
+ tree_parse(root, "/openprom/init/register/r5 0x%lx",
+ (unsigned long)chirp->code_client_va);
+ /* a stack */
+ tree_parse(root, "/openprom/init/register/sp 0x%lx",
+ (unsigned long)(chirp->stack_va + chirp->sizeof_stack - 16));
+ /* in chrp mode any arguments end up being concatinated */
+ tree_parse(root, "/openprom/init/stack/stack-type chirp");
+
+
+ /* client interface - emul-call followed by return instruction */
+
+
+ node = tree_parse(root, "/openprom/init/data@0x%lx",
+ (unsigned long)chirp->code_client_ra);
+ tree_parse(node, "./psim,description \"client-interface instruction");
+ tree_parse(node, "./real-address 0x%lx",
+ (unsigned long)chirp->code_client_ra);
+ tree_parse(node, "./data 0x%lx",
+ (unsigned long)emul_call_instruction);
+
+ node = tree_parse(root, "/openprom/init/data@0x%lx",
+ (unsigned long)(chirp->code_client_ra + 4));
+ tree_parse(node, "./psim,description \"client-interface return instruction");
+ tree_parse(node, "./real-address 0x%lx",
+ (unsigned long)(chirp->code_client_ra + 4));
+ tree_parse(node, "./data 0x%lx",
+ (unsigned long)emul_blr_instruction);
+
+
+ /* return address for client callbacks - an emul-call instruction
+ that is again followed by a return instruction */
+
+
+ node = tree_parse(root, "/openprom/init/data@0x%lx",
+ (unsigned long)chirp->code_callback_ra);
+ tree_parse(node, "./psim,description \"client-callback instruction");
+ tree_parse(node, "./real-address 0x%lx",
+ (unsigned long)chirp->code_callback_ra);
+ tree_parse(node, "./data 0x%lx",
+ (unsigned long)emul_call_instruction);
+
+ node = tree_parse(root, "/openprom/init/data@0x%lx",
+ (unsigned long)(chirp->code_callback_ra + 4));
+ tree_parse(node, "./psim,description \"client-callback return instruction");
+ tree_parse(node, "./real-address 0x%lx",
+ (unsigned long)(chirp->code_callback_ra + 4));
+ tree_parse(node, "./data 0x%lx",
+ (unsigned long)emul_blr_instruction);
+
+ /* loop to keep other processors busy */
+
+ node = tree_parse(root, "/openprom/init/data@0x%lx",
+ (unsigned long)chirp->code_loop_ra);
+ tree_parse(node, "./psim,description \"processor busy loop");
+ tree_parse(node, "./real-address 0x%lx",
+ (unsigned long)chirp->code_loop_ra);
+ tree_parse(node, "./data 0x%lx",
+ (unsigned long)emul_loop_instruction);
+
+ /* hash table */
+
+ /* create a hash table */
+
+ if (!chirp->real_mode) {
+ node = tree_parse(root, "/openprom/init/htab@0x%lx",
+ (unsigned long)chirp->htab_ra);
+ tree_parse(node, "./claim 0");
+ tree_parse(node, "./real-address 0x%lx",
+ (unsigned long)chirp->htab_ra);
+ tree_parse(node, "./nr-bytes 0x%lx",
+ (unsigned long)chirp->sizeof_htab);
+ }
+
+ /* map in the stack */
+
+ if (!chirp->real_mode) {
+ node = tree_parse(root, "/openprom/init/htab/pte@0x%lx",
+ (unsigned long)chirp->stack_ra);
+ tree_parse(node, "./psim,description \"map in the stack");
+ tree_parse(node, "./claim 1");
+ tree_parse(node, "./virtual-address 0x%lx",
+ (unsigned long)chirp->stack_va);
+ tree_parse(node, "./real-address 0x%lx",
+ (unsigned long)chirp->stack_ra);
+ tree_parse(node, "./nr-bytes 0x%lx",
+ (unsigned long)chirp->sizeof_stack);
+ tree_parse(node, "./wimg %d", 0x7);
+ tree_parse(node, "./pp %d", 0x2);
+ }
+
+ /* map in the chrp openboot callback code */
+
+ if (!chirp->real_mode) {
+ node = tree_parse(root, "/openprom/init/htab/pte@0x%lx",
+ (unsigned long)chirp->code_ra);
+ tree_parse(node, "./psim,description \"map in chrp openboot callback code");
+ tree_parse(node, "./claim 1");
+ tree_parse(node, "./virtual-address 0x%lx",
+ (unsigned long)chirp->code_va);
+ tree_parse(node, "./real-address 0x%lx",
+ (unsigned long)chirp->code_ra);
+ tree_parse(node, "./nr-bytes 0x%lx",
+ (unsigned long)chirp->sizeof_code);
+ tree_parse(node, "./wimg %d", 0x7);
+ tree_parse(node, "./pp %d", 0x2);
+ }
+
+ /* map in the program to run */
+
+ if (chirp->real_mode) {
+ node = tree_parse(node, "/openprom/init/load-binary");
+ tree_parse(node, "./psim,description \"load the binary");
+ tree_parse(node, "./file-name %s", bfd_get_filename(image));
+ tree_parse(node, "./claim 1");
+ }
+ else {
+ node = tree_parse(root, "/openprom/init/htab/pte@0x%lx",
+ (unsigned long)chirp->load_base);
+ tree_parse(node, "./psim,description \"load & map the binary");
+ tree_parse(node, "./claim 1");
+ tree_parse(node, "./file-name \"%s", bfd_get_filename(image));
+ tree_parse(node, "./wimg %d", 0x7);
+ tree_parse(node, "./pp %d", 0x2);
}
+
+ /* map in the interrupt vectors */
+
+ if (!chirp->real_mode) {
+ node = tree_parse(root, "/openprom/init/htab/pte@0x0");
+ tree_parse(node, "./psim,description \"map in interrupt vectors");
+ tree_parse(node, "./virtual-address 0x0");
+ tree_parse(node, "./real-address 0x0");
+ tree_parse(node, "./nr-bytes 0x3000");
+ tree_parse(node, "./wimg %d", 0x7);
+ tree_parse(node, "./pp %d", 0x2);
+ }
+
+ return chirp;
}
static void
int nr_cpus)
{
emul_data->state = serving;
- cap_init(emul_data->phandles);
}
static int
emul_chirp_instruction_call(cpu *processor,
- unsigned_word cia,
- unsigned_word ra,
- os_emul_data *emul_data)
+ unsigned_word cia,
+ unsigned_word ra,
+ os_emul_data *emul_data)
{
unsigned_word service_name_addr;
unsigned_word result;
chirp_services *service;
switch (emul_data->state) {
+
case serving:
- /* verify then capture the current request */
- if (cia != emul_data->serving_instruction_ea)
+ /* we are waiting on an OpenBoot request from the client program
+ via the client interface */
+ if (cia != emul_data->code_client_va)
return 0;
emul_data->return_address = LR;
emul_data->arguments = cpu_registers(processor)->gpr[3];
processor, cia);
service_name = emul_read_string(service_buf, service_name_addr,
sizeof(service_buf), processor, cia);
+ emul_data->n_args = emul_read_word(emul_data->arguments + sizeof(unsigned_cell),
+ processor, cia);
+ emul_data->n_returns = emul_read_word(emul_data->arguments + 2 * sizeof(unsigned_cell),
+ processor, cia);
+ /* verify what was passed */
+ if (service_name_addr == 0
+ || service_name == NULL) {
+ error("OpenFirmware called with invalid (NULL) service name from 0x%lx with args 0x%lx\n",
+ (unsigned long)emul_data->return_address,
+ (unsigned long)emul_data->arguments);
+ }
+ if (emul_data->n_args > 6) { /* See iee1275 requirements on nr returns */
+ error("OpenFirmware service %s called from 0x%lx with args 0x%lx, too many args (%d)\n",
+ (unsigned long)emul_data->return_address,
+ (unsigned long)emul_data->arguments,
+ emul_data->n_returns);
+ }
+ if (emul_data->n_returns > 6) {
+ error("OpenFirmware service %s called from 0x%lx with args 0x%lx, with too many returns (%d)\n",
+ (unsigned long)emul_data->return_address,
+ (unsigned long)emul_data->arguments,
+ emul_data->n_args);
+ }
/* look it up */
+ TRACE(trace_os_emul, ("%s called from 0x%lx with args 0x%lx\n",
+ service_name,
+ (unsigned long)emul_data->return_address,
+ (unsigned long)emul_data->arguments));
service = services;
while (service->name != NULL && strcmp(service->name, service_name) != 0)
service++;
+ /* found or not? */
if (service->name == NULL) {
- cpu_registers(processor)->gpr[3] = 0;
- cpu_restart(processor, emul_data->return_address);
+ error("OpenBoot service `%s' not found\n", service_name);
+ TRACE(trace_os_emul, ("%s not found\n", service_name));
+ cpu_registers(processor)->gpr[3] = -1;
+ }
+ else {
+ emul_data->service = service;
+ /* call upon it */
+ result = service->handler(emul_data, processor, cia);
+ if (result != 0)
+ TRACE(trace_os_emul, ("%s aborted with %ld\n", service_name, (long)result));
+ cpu_registers(processor)->gpr[3] = result;
}
- emul_data->service = service;
- TRACE(trace_os_emul, ("%s called from 0x%lx\n",
- service->name, emul_data->return_address));
- /* call upon it */
- result = service->handler(emul_data, processor, cia);
break;
+
default:
error("emul_chirp_instruction_call() unknown internal state\n");
result = -1;
break;
+
}
- /* return to caller */
- cpu_registers(processor)->gpr[3] = result;
- cpu_restart(processor, emul_data->return_address);
+ /* return to caller - instruction following this is a function return */
return 1;
}
projects / deliverable / binutils-gdb.git / blobdiff