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-rw-r--r--sim/ppc/emul_generic.c343
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diff --git a/sim/ppc/emul_generic.c b/sim/ppc/emul_generic.c
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+/* 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 _EMUL_GENERIC_C_
+#define _EMUL_GENERIC_C_
+
+#include "emul_generic.h"
+
+#ifndef STATIC_INLINE_EMUL_GENERIC
+#define STATIC_INLINE_EMUL_GENERIC STATIC_INLINE
+#endif
+
+
+STATIC_INLINE_EMUL_GENERIC void
+emul_syscall_enter(emul_syscall *emul,
+ int call,
+ int arg0,
+ cpu *processor,
+ unsigned_word cia)
+{
+ printf_filtered("%d:0x%lx:%s(",
+ cpu_nr(processor) + 1,
+ (long)cia,
+ emul->syscall_descriptor[call].name);
+}
+
+
+STATIC_INLINE_EMUL_GENERIC void
+emul_syscall_exit(emul_syscall *emul,
+ int call,
+ int arg0,
+ cpu *processor,
+ unsigned_word cia)
+{
+ int status = cpu_registers(processor)->gpr[3];
+ int error = cpu_registers(processor)->gpr[0];
+ printf_filtered(")=%d", status);
+ if (error > 0 && error < emul->nr_error_names)
+ printf_filtered("[%s]", emul->error_names[error]);
+ printf_filtered("\n");
+}
+
+
+INLINE_EMUL_GENERIC unsigned64
+emul_read_gpr64(cpu *processor,
+ int g)
+{
+ unsigned32 hi;
+ unsigned32 lo;
+ if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {
+ hi = cpu_registers(processor)->gpr[g];
+ lo = cpu_registers(processor)->gpr[g+1];
+ }
+ else {
+ lo = cpu_registers(processor)->gpr[g];
+ hi = cpu_registers(processor)->gpr[g+1];
+ }
+ return (INSERTED64(hi, 0, 31) | INSERTED64(lo, 32, 63));
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_write_gpr64(cpu *processor,
+ int g,
+ unsigned64 val)
+{
+ unsigned32 hi = EXTRACTED64(val, 0, 31);
+ unsigned32 lo = EXTRACTED64(val, 32, 63);
+ if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) {
+ cpu_registers(processor)->gpr[g] = hi;
+ cpu_registers(processor)->gpr[g+1] = lo;
+ }
+ else {
+ cpu_registers(processor)->gpr[g] = lo;
+ cpu_registers(processor)->gpr[g+1] = hi;
+ }
+}
+
+
+INLINE_EMUL_GENERIC char *
+emul_read_string(char *dest,
+ unsigned_word addr,
+ unsigned nr_bytes,
+ cpu *processor,
+ unsigned_word cia)
+{
+ unsigned nr_moved = 0;
+ if (addr == 0)
+ return NULL;
+ while (1) {
+ dest[nr_moved] = vm_data_map_read_1(cpu_data_map(processor),
+ addr + nr_moved,
+ processor, cia);
+ if (dest[nr_moved] == '\0' || nr_moved >= nr_bytes)
+ break;
+ nr_moved++;
+ }
+ dest[nr_moved] = '\0';
+ return dest;
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_write_status(cpu *processor,
+ int status,
+ int errno)
+{
+ if (status == -1 && errno != 0) {
+ cpu_registers(processor)->gpr[3] = errno;
+ CR_SET(0, cr_i_summary_overflow);
+ }
+ else {
+ cpu_registers(processor)->gpr[3] = status;
+ CR_SET(0, 0);
+ }
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_write2_status(cpu *processor,
+ int status1,
+ int status2,
+ int errno)
+{
+ if (status1 == -1 && errno != 0) {
+ cpu_registers(processor)->gpr[3] = errno;
+ CR_SET(0, cr_i_summary_overflow);
+ }
+ else {
+ cpu_registers(processor)->gpr[3] = status1;
+ cpu_registers(processor)->gpr[4] = status2;
+ CR_SET(0, 0);
+ }
+}
+
+
+INLINE_EMUL_GENERIC unsigned_word
+emul_read_word(unsigned_word addr,
+ cpu *processor,
+ unsigned_word cia)
+{
+ return vm_data_map_read_word(cpu_data_map(processor),
+ addr,
+ processor, cia);
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_write_word(unsigned_word addr,
+ unsigned_word buf,
+ cpu *processor,
+ unsigned_word cia)
+{
+ vm_data_map_write_word(cpu_data_map(processor),
+ addr,
+ buf,
+ processor, cia);
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_write_buffer(const void *source,
+ unsigned_word addr,
+ unsigned nr_bytes,
+ cpu *processor,
+ unsigned_word cia)
+{
+ int nr_moved;
+ for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) {
+ vm_data_map_write_1(cpu_data_map(processor),
+ addr + nr_moved,
+ ((const char*)source)[nr_moved],
+ processor, cia);
+ }
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_read_buffer(void *dest,
+ unsigned_word addr,
+ unsigned nr_bytes,
+ cpu *processor,
+ unsigned_word cia)
+{
+ int nr_moved;
+ for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) {
+ ((char*)dest)[nr_moved] = vm_data_map_read_1(cpu_data_map(processor),
+ addr + nr_moved,
+ processor, cia);
+ }
+}
+
+
+INLINE_EMUL_GENERIC void
+emul_do_system_call(os_emul_data *emul_data,
+ emul_syscall *emul,
+ unsigned call,
+ const int arg0,
+ cpu *processor,
+ unsigned_word cia)
+{
+ emul_syscall_handler *handler = NULL;
+ if (call >= emul->nr_system_calls)
+ error("do_call() os_emul call %d out-of-range\n", call);
+
+ handler = emul->syscall_descriptor[call].handler;
+ if (handler == NULL) {
+ if (emul->syscall_descriptor[call].name) {
+ error("do_call() unimplemented call %s\n", emul->syscall_descriptor[call].name);
+ } else {
+ error("do_call() unimplemented call %d\n", call);
+ }
+ }
+
+ if (WITH_TRACE && ppc_trace[trace_os_emul])
+ emul_syscall_enter(emul, call, arg0, processor, cia);
+
+ cpu_registers(processor)->gpr[0] = 0; /* default success */
+ handler(emul_data, call, arg0, processor, cia);
+
+ if (WITH_TRACE && ppc_trace[trace_os_emul])
+ emul_syscall_exit(emul, call, arg0, processor, cia);
+}
+
+
+/* default size for the first bank of memory */
+
+#ifndef OEA_MEMORY_SIZE
+#define OEA_MEMORY_SIZE 0x100000
+#endif
+
+
+/* Add options to the device tree */
+
+INLINE_EMUL_GENERIC void
+emul_add_tree_options(device *tree,
+ bfd *image,
+ const char *emul,
+ const char *env,
+ int oea_interrupt_prefix)
+{
+ int little_endian = 0;
+
+ /* sort out little endian */
+ if (tree_find_property(tree, "/options/little-endian?"))
+ little_endian = tree_find_boolean_property(tree, "/options/little-endian?");
+ else {
+#ifdef bfd_little_endian /* new bfd */
+ little_endian = (image != NULL && bfd_little_endian(image));
+#else
+ little_endian = (image != NULL &&
+ !image->xvec->byteorder_big_p);
+#endif
+ tree_parse(tree, "/options/little-endian? %s",
+ little_endian ? "true" : "false");
+ }
+
+ /* misc other stuff */
+ tree_parse(tree, "/openprom/options/oea-memory-size 0x%x",
+ OEA_MEMORY_SIZE);
+ tree_parse(tree, "/openprom/options/oea-interrupt-prefix %d",
+ oea_interrupt_prefix);
+ tree_parse(tree, "/openprom/options/smp 1");
+ tree_parse(tree, "/openprom/options/env %s", env);
+ tree_parse(tree, "/openprom/options/os-emul %s", emul);
+ tree_parse(tree, "/openprom/options/strict-alignment? %s",
+ (WITH_ALIGNMENT == STRICT_ALIGNMENT)
+ ? "true" : "false");
+ tree_parse(tree, "/openprom/options/floating-point? %s",
+ WITH_FLOATING_POINT ? "true" : "false");
+ tree_parse(tree, "/openprom/options/use-stdio? %s",
+ ((WITH_STDIO == DO_USE_STDIO
+ || WITH_STDIO == 0)
+ ? "true" : "false"));
+ tree_parse(tree, "/openprom/options/model \"%s",
+ model_name[WITH_DEFAULT_MODEL]);
+ tree_parse(tree, "/openprom/options/model-issue %d",
+ MODEL_ISSUE_IGNORE);
+
+ /* useful options */
+}
+
+INLINE_EMUL_GENERIC void
+emul_add_tree_hardware(device *root)
+{
+ int i;
+ int nr_cpus = tree_find_integer_property(root, "/openprom/options/smp");
+
+ /* sanity check the number of processors */
+ if (nr_cpus > MAX_NR_PROCESSORS)
+ error("Specified number of processors (%d) exceeds the number configured (%d).\n",
+ nr_cpus, MAX_NR_PROCESSORS);
+
+ /* set the number of address cells (1 or 2) */
+ tree_parse(root, "#address-cells %d", WITH_TARGET_WORD_BITSIZE / 32);
+
+ /* add some memory */
+ if (tree_find_device(root, "/memory") == NULL) {
+ unsigned_word memory_size =
+ tree_find_integer_property(root, "/openprom/options/oea-memory-size");
+ const unsigned_word avail_start = 0x3000;
+ tree_parse(root, "/memory@0/reg 0x0 0x%lx",
+ (unsigned long)memory_size);
+ /* reserve the first 0x3000 for the PowerPC interrupt table */
+ tree_parse(root, "/memory@0/available 0x%lx 0x%lx",
+ (unsigned long)avail_start,
+ (unsigned long)memory_size - avail_start);
+ }
+
+ /* our processors */
+ for (i = 0; i < nr_cpus; i++) {
+ tree_parse(root, "/cpus/cpu@%d/cpu-nr %d", i, i);
+ }
+
+ /* the debugging pal - hide it in the openprom and don't attach it
+ to any bus */
+ tree_parse(root, "/openprom/pal");
+
+ /* chosen etc */
+ tree_parse(root, "/chosen/stdin */openprom/pal");
+ tree_parse(root, "/chosen/stdout !/chosen/stdin");
+ tree_parse(root, "/chosen/memory */memory");
+}
+
+#endif /* _EMUL_GENERIC_C_ */
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