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[/] [openrisc/] [trunk/] [gnu-stable/] [gdb-7.2/] [sim/] [ppc/] [emul_generic.c] - Rev 841
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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_ */