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/* |
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* Copyright (C) 2004-2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: useremul.c,v 1.62 2005/08/16 06:49:26 debug Exp $ |
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* |
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* Userland (syscall) emulation. |
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* |
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* TODO: |
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* |
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* NetBSD/pmax: |
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* environment passing |
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* more syscalls |
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* |
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* 32-bit vs 64-bit problems? MIPS n32, o32, n64? |
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* |
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* Dynamic ELFs? |
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* |
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* Try to prefix "/emul/mips/" or similar to all filenames, |
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* and only if that fails, try the given filename |
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* |
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* Automagic errno translation? |
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* |
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* Memory allocation? mmap etc. |
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* |
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* File descriptor (0,1,2) assumptions? |
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* |
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* |
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* This module needs more cleanup. |
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* ------------------------------- |
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* |
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* |
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* NOTE: This module (useremul.c) is just a quick hack to see if |
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* userland emulation works at all. |
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*/ |
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|
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#include <errno.h> |
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#include <fcntl.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <stdarg.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <sys/time.h> |
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#include <sys/stat.h> |
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#include <sys/socket.h> |
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#include <sys/resource.h> |
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#include <time.h> |
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|
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#include "cpu.h" |
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#include "cpu_mips.h" |
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#include "emul.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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#include "syscall_linux_ppc.h" |
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#include "syscall_netbsd.h" |
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#include "syscall_ultrix.h" |
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#include "sysctl_netbsd.h" |
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|
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struct syscall_emul { |
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char *name; |
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int arch; |
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char *cpu_name; |
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void (*f)(struct cpu *, uint32_t); |
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void (*setup)(struct cpu *, int, char **); |
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|
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struct syscall_emul *next; |
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}; |
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|
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static struct syscall_emul *first_syscall_emul; |
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|
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/* Max length of strings passed using syscall parameters: */ |
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#define MAXLEN 8192 |
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|
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|
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/* |
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* useremul_setup(): |
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* |
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* Set up an emulated environment suitable for running userland code. The |
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* program should already have been loaded into memory when this function |
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* is called. |
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*/ |
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void useremul_setup(struct cpu *cpu, int argc, char **host_argv) |
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{ |
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struct syscall_emul *sep; |
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|
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sep = first_syscall_emul; |
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|
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while (sep != NULL) { |
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if (strcasecmp(cpu->machine->userland_emul, sep->name) == 0) { |
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sep->setup(cpu, argc, host_argv); |
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return; |
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} |
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sep = sep->next; |
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} |
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|
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fatal("useremul_setup(): internal error, unimplemented emulation?\n"); |
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exit(1); |
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} |
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|
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|
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/* |
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* useremul__freebsd_setup(): |
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* |
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* Set up an emulated userland environment suitable for running FreeBSD |
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* binaries. |
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*/ |
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void useremul__freebsd_setup(struct cpu *cpu, int argc, char **host_argv) |
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{ |
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debug("useremul__freebsd_setup(): TODO\n"); |
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|
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switch (cpu->machine->arch) { |
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case ARCH_ALPHA: |
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/* According to FreeBSD's /usr/src/lib/csu/alpha/crt1.c: */ |
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/* a0 = char **ap */ |
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/* a1 = void (*cleanup)(void) from shared loader */ |
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/* a2 = struct Struct_Obj_Entry *obj from shared loader */ |
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/* a3 = struct ps_strings *ps_strings */ |
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cpu->cd.alpha.r[ALPHA_A0] = 0; |
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cpu->cd.alpha.r[ALPHA_A1] = 0; |
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cpu->cd.alpha.r[ALPHA_A2] = 0; |
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cpu->cd.alpha.r[ALPHA_A3] = 0; |
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|
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/* What is a good stack pointer? TODO */ |
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cpu->cd.alpha.r[ALPHA_SP] = 0x120000000ULL + |
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1048576 * cpu->machine->physical_ram_in_mb - 1024; |
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break; |
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default: |
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fatal("non-Alpha not yet implemented for freebsd emul.\n"); |
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exit(1); |
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} |
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} |
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|
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|
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/* |
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* useremul__linux_setup(): |
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* |
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* Set up an emulated userland environment suitable for running Linux |
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* binaries. |
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*/ |
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void useremul__linux_setup(struct cpu *cpu, int argc, char **host_argv) |
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{ |
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debug("useremul__linux_setup(): TODO\n"); |
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|
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if (cpu->machine->arch != ARCH_PPC) { |
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fatal("non-PPC not yet implemented for linux emul.\n"); |
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exit(1); |
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} |
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|
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/* What is a good stack pointer? TODO */ |
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cpu->cd.ppc.gpr[1] = 0x7ffff000ULL; |
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} |
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|
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|
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/* |
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* useremul__netbsd_setup(): |
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* |
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* Set up an emulated userland environment suitable for running NetBSD |
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* binaries. |
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*/ |
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void useremul__netbsd_setup(struct cpu *cpu, int argc, char **host_argv) |
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{ |
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uint64_t stack_top = 0x7fff0000; |
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uint64_t stacksize = 8 * 1048576; |
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uint64_t stack_margin = 16384; |
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uint64_t cur_argv; |
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int i, i2; |
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int envc = 1; |
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|
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switch (cpu->machine->arch) { |
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case ARCH_MIPS: |
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/* See netbsd/sys/src/arch/mips/mips_machdep.c:setregs() */ |
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cpu->cd.mips.gpr[MIPS_GPR_A0] = stack_top - stack_margin; |
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cpu->cd.mips.gpr[25] = cpu->pc; /* reg. t9 */ |
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|
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/* The userland stack: */ |
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cpu->cd.mips.gpr[MIPS_GPR_SP] = stack_top - stack_margin; |
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add_symbol_name(&cpu->machine->symbol_context, |
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stack_top - stacksize, stacksize, "userstack", 0, 0); |
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|
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/* Stack contents: (TODO: is this correct?) */ |
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store_32bit_word(cpu, stack_top - stack_margin, argc); |
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|
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cur_argv = stack_top - stack_margin + 128 + (argc + envc) |
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* sizeof(uint32_t); |
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for (i=0; i<argc; i++) { |
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debug("adding argv[%i]: '%s'\n", i, host_argv[i]); |
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|
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store_32bit_word(cpu, stack_top - stack_margin + |
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4 + i*sizeof(uint32_t), cur_argv); |
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store_string(cpu, cur_argv, host_argv[i]); |
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cur_argv += strlen(host_argv[i]) + 1; |
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} |
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|
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/* Store a NULL value between the args and the environment |
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strings: */ |
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store_32bit_word(cpu, stack_top - stack_margin + |
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4 + i*sizeof(uint32_t), 0); i++; |
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|
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/* TODO: get environment strings from somewhere */ |
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|
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/* Store all environment strings: */ |
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for (i2 = 0; i2 < envc; i2 ++) { |
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store_32bit_word(cpu, stack_top - stack_margin + 4 |
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+ (i+i2)*sizeof(uint32_t), cur_argv); |
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store_string(cpu, cur_argv, "DISPLAY=localhost:0.0"); |
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cur_argv += strlen("DISPLAY=localhost:0.0") + 1; |
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} |
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break; |
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|
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case ARCH_ARM: |
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debug("useremul__netbsd_setup(): ARM: TODO\n"); |
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break; |
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|
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case ARCH_PPC: |
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debug("useremul__netbsd_setup(): PPC: TODO\n"); |
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|
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/* What is a good stack pointer? TODO */ |
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cpu->cd.ppc.gpr[1] = 0x7ffff000ULL; |
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|
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break; |
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|
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case ARCH_X86: |
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debug("useremul__netbsd_setup(): X86: TODO\n"); |
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|
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break; |
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|
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default: |
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fatal("useremul__netbsd_setup(): unimplemented arch\n"); |
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exit(1); |
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} |
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} |
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|
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|
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/* |
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* useremul__ultrix_setup(): |
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* |
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* Set up an emulated userland environment suitable for running Ultrix |
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* binaries. |
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*/ |
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void useremul__ultrix_setup(struct cpu *cpu, int argc, char **host_argv) |
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{ |
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uint64_t stack_top = 0x7fff0000; |
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uint64_t stacksize = 8 * 1048576; |
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uint64_t stack_margin = 16384; |
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uint64_t cur_argv; |
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int i, i2; |
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int envc = 1; |
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|
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/* TODO: is this correct? */ |
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cpu->cd.mips.gpr[MIPS_GPR_A0] = stack_top - stack_margin; |
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cpu->cd.mips.gpr[25] = cpu->pc; /* reg. t9 */ |
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|
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/* The userland stack: */ |
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cpu->cd.mips.gpr[MIPS_GPR_SP] = stack_top - stack_margin; |
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add_symbol_name(&cpu->machine->symbol_context, |
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stack_top - stacksize, stacksize, "userstack", 0, 0); |
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|
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/* Stack contents: (TODO: is this correct?) */ |
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store_32bit_word(cpu, stack_top - stack_margin, argc); |
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|
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cur_argv = stack_top - stack_margin + 128 + |
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(argc + envc) * sizeof(uint32_t); |
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for (i=0; i<argc; i++) { |
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debug("adding argv[%i]: '%s'\n", i, host_argv[i]); |
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|
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store_32bit_word(cpu, stack_top - stack_margin + |
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4 + i*sizeof(uint32_t), cur_argv); |
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store_string(cpu, cur_argv, host_argv[i]); |
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cur_argv += strlen(host_argv[i]) + 1; |
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} |
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|
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/* Store a NULL value between the args and the environment strings: */ |
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store_32bit_word(cpu, stack_top - stack_margin |
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+ 4 + i*sizeof(uint32_t), 0); i++; |
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|
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/* TODO: get environment strings from somewhere */ |
302 |
|
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/* Store all environment strings: */ |
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for (i2 = 0; i2 < envc; i2 ++) { |
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store_32bit_word(cpu, stack_top - stack_margin + 4 + |
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(i+i2)*sizeof(uint32_t), cur_argv); |
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store_string(cpu, cur_argv, "DISPLAY=localhost:0.0"); |
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cur_argv += strlen("DISPLAY=localhost:0.0") + 1; |
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} |
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} |
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|
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|
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/* |
314 |
* get_userland_string(): |
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* |
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* This can be used to retrieve strings, for example filenames, |
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* from the emulated memory. |
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* |
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* NOTE: This function returns a pointer to a malloced buffer. It is up to |
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* the caller to use free(). |
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*/ |
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static unsigned char *get_userland_string(struct cpu *cpu, uint64_t baseaddr) |
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{ |
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unsigned char *charbuf; |
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int i, len = 16384; |
326 |
|
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charbuf = malloc(len); |
328 |
if (charbuf == NULL) { |
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fprintf(stderr, "get_userland_string(): out of memory (trying" |
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" to allocate %i bytes)\n", len); |
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exit(1); |
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} |
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|
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/* TODO: address validity check */ |
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|
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for (i=0; i<len; i++) { |
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cpu->memory_rw(cpu, cpu->mem, baseaddr+i, charbuf+i, |
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1, MEM_READ, CACHE_DATA); |
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if (charbuf[i] == '\0') |
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break; |
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} |
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|
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charbuf[MAXLEN-1] = 0; |
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return charbuf; |
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} |
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|
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|
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/* |
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* get_userland_buf(): |
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* |
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* This can be used to retrieve buffers, for example inet_addr, from |
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* emulated memory. |
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* |
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* NOTE: This function returns a pointer to a malloced buffer. It is up to |
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* the caller to use free(). |
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* |
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* TODO: combine this with get_userland_string() in some way |
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*/ |
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static unsigned char *get_userland_buf(struct cpu *cpu, |
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uint64_t baseaddr, uint64_t len) |
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{ |
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unsigned char *charbuf; |
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ssize_t i; |
364 |
|
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charbuf = malloc(len); |
366 |
if (charbuf == NULL) { |
367 |
fprintf(stderr, "get_userland_buf(): out of memory (trying" |
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" to allocate %lli bytes)\n", (long long)len); |
369 |
exit(1); |
370 |
} |
371 |
|
372 |
/* TODO: address validity check */ |
373 |
for (i=0; i<len; i++) { |
374 |
cpu->memory_rw(cpu, cpu->mem, baseaddr+i, charbuf+i, 1, |
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MEM_READ, CACHE_DATA); |
376 |
/* debug(" %02x", charbuf[i]); */ |
377 |
} |
378 |
debug("\n"); |
379 |
|
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return charbuf; |
381 |
} |
382 |
|
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|
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/* |
385 |
* useremul_syscall(): |
386 |
* |
387 |
* Handle userland syscalls. This function is called whenever a userland |
388 |
* process runs a 'syscall' instruction. The code argument is the code |
389 |
* embedded into the syscall instruction, if any. (This 'code' value is not |
390 |
* necessarily used by specific emulations.) |
391 |
*/ |
392 |
void useremul_syscall(struct cpu *cpu, uint32_t code) |
393 |
{ |
394 |
if (cpu->useremul_syscall == NULL) { |
395 |
fatal("useremul_syscall(): cpu->useremul_syscall == NULL\n"); |
396 |
} else |
397 |
cpu->useremul_syscall(cpu, code); |
398 |
} |
399 |
|
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|
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/*****************************************************************************/ |
402 |
|
403 |
|
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/* |
405 |
* useremul_exit(): |
406 |
*/ |
407 |
int useremul_exit(struct cpu *cpu, uint64_t arg0) |
408 |
{ |
409 |
debug("[ exit(%i) ]\n", (int)arg0); |
410 |
cpu->running = 0; |
411 |
cpu->machine->exit_without_entering_debugger = 1; |
412 |
return 0; |
413 |
} |
414 |
|
415 |
|
416 |
/* |
417 |
* useremul_write(): |
418 |
*/ |
419 |
int64_t useremul_write(struct cpu *cpu, int64_t *errnop, |
420 |
uint64_t arg0, uint64_t arg1, uint64_t arg2) |
421 |
{ |
422 |
int64_t res = 0; |
423 |
*errnop = 0; |
424 |
debug("[ write(%i,0x%llx,%lli) ]\n", |
425 |
(int)arg0, (long long)arg1, (long long)arg2); |
426 |
if (arg2 != 0) { |
427 |
unsigned char *cp = get_userland_buf(cpu, arg1, arg2); |
428 |
res = write(arg0, cp, arg2); |
429 |
if (res < 0) |
430 |
*errnop = errno; |
431 |
free(cp); |
432 |
} |
433 |
return res; |
434 |
} |
435 |
|
436 |
|
437 |
/* |
438 |
* useremul_break(): |
439 |
*/ |
440 |
int64_t useremul_break(struct cpu *cpu, uint64_t arg0) |
441 |
{ |
442 |
debug("[ break(0x%llx): TODO ]\n", (long long)arg0); |
443 |
|
444 |
/* TODO */ |
445 |
return 0; |
446 |
} |
447 |
|
448 |
|
449 |
/* |
450 |
* useremul_getpid(): |
451 |
*/ |
452 |
int64_t useremul_getpid(struct cpu *cpu) |
453 |
{ |
454 |
int64_t pid = getpid(); |
455 |
debug("[ getpid(): %lli ]\n", (long long)pid); |
456 |
return pid; |
457 |
} |
458 |
|
459 |
|
460 |
/* |
461 |
* useremul_getuid(): |
462 |
*/ |
463 |
int64_t useremul_getuid(struct cpu *cpu) |
464 |
{ |
465 |
int64_t uid = getuid(); |
466 |
debug("[ getuid(): %lli ]\n", (long long)uid); |
467 |
return uid; |
468 |
} |
469 |
|
470 |
|
471 |
/* |
472 |
* useremul_getegid(): |
473 |
*/ |
474 |
int64_t useremul_getegid(struct cpu *cpu) |
475 |
{ |
476 |
int64_t egid = getegid(); |
477 |
debug("[ getegid(): %lli ]\n", (long long)egid); |
478 |
return egid; |
479 |
} |
480 |
|
481 |
|
482 |
/* |
483 |
* useremul_getgid(): |
484 |
*/ |
485 |
int64_t useremul_getgid(struct cpu *cpu) |
486 |
{ |
487 |
int64_t gid = getgid(); |
488 |
debug("[ getgid(): %lli ]\n", (long long)gid); |
489 |
return gid; |
490 |
} |
491 |
|
492 |
|
493 |
/* |
494 |
* useremul_sync(): |
495 |
*/ |
496 |
int useremul_sync(struct cpu *cpu) |
497 |
{ |
498 |
debug("[ sync() ]\n"); |
499 |
sync(); |
500 |
return 0; |
501 |
} |
502 |
|
503 |
|
504 |
/* |
505 |
* useremul_readlink(): |
506 |
*/ |
507 |
int64_t useremul_readlink(struct cpu *cpu, int64_t *errnop, |
508 |
uint64_t arg0, uint64_t arg1, int64_t arg2) |
509 |
{ |
510 |
int64_t res = 0; |
511 |
unsigned char *charbuf = get_userland_string(cpu, arg0); |
512 |
unsigned char *buf2; |
513 |
|
514 |
debug("[ readlink(\"%s\",0x%llx,%lli) ]\n", |
515 |
charbuf, (long long)arg1, (long long)arg2); |
516 |
if (arg2 == 0 || arg2 > 150000) { |
517 |
fprintf(stderr, "[ useremul_readlink(): TODO ]\n"); |
518 |
exit(1); |
519 |
} |
520 |
|
521 |
buf2 = malloc(arg2); |
522 |
if (buf2 == NULL) { |
523 |
fprintf(stderr, "[ useremul_readlink(): out of memory ]\n"); |
524 |
exit(1); |
525 |
} |
526 |
res = readlink((char *)charbuf, (char *)buf2, arg2); |
527 |
buf2[arg2-1] = '\0'; |
528 |
if (res < 0) |
529 |
*errnop = errno; |
530 |
else |
531 |
store_string(cpu, arg1, (char *)buf2); |
532 |
free(buf2); |
533 |
free(charbuf); |
534 |
return res; |
535 |
} |
536 |
|
537 |
|
538 |
/* |
539 |
* useremul_getrusage(): |
540 |
*/ |
541 |
int64_t useremul_getrusage(struct cpu *cpu, int64_t *errnop, |
542 |
uint64_t arg0, uint64_t arg1) |
543 |
{ |
544 |
int64_t res; |
545 |
struct rusage rusage; |
546 |
debug("[ getrusage(%i,0x%llx) ]\n", (int)arg0, (long long)arg1); |
547 |
res = getrusage(arg0, &rusage); |
548 |
|
549 |
fatal("TODO: convert rusage into emulated memory!\n"); |
550 |
store_64bit_word(cpu, arg1 + 0, rusage.ru_utime.tv_sec); |
551 |
store_64bit_word(cpu, arg1 + 8, rusage.ru_utime.tv_usec); |
552 |
store_64bit_word(cpu, arg1 + 16, rusage.ru_stime.tv_sec); |
553 |
store_64bit_word(cpu, arg1 + 24, rusage.ru_stime.tv_usec); |
554 |
|
555 |
return res; |
556 |
} |
557 |
|
558 |
|
559 |
/* |
560 |
* useremul_fstat(): |
561 |
*/ |
562 |
int64_t useremul_fstat(struct cpu *cpu, int64_t *errnop, |
563 |
int64_t arg0, uint64_t arg1) |
564 |
{ |
565 |
int64_t res; |
566 |
struct stat sb; |
567 |
debug("[ fstat(%i,0x%llx) ]\n", (int)arg0, (long long)arg1); |
568 |
res = fstat(arg0, &sb); |
569 |
if (res < 0) |
570 |
*errnop = errno; |
571 |
else { |
572 |
fatal("TODO: convert sb into emulated memory!\n"); |
573 |
|
574 |
/* NOTE: FreeBSD/alpha only */ |
575 |
|
576 |
store_32bit_word(cpu, arg1 + 0, sb.st_dev); |
577 |
store_32bit_word(cpu, arg1 + 4, sb.st_ino); |
578 |
/* store_16bit_word(cpu, arg1 + 8, sb.st_mode); |
579 |
*/ store_16bit_word(cpu, arg1 + 10, sb.st_nlink); |
580 |
store_32bit_word(cpu, arg1 + 12, sb.st_uid); |
581 |
store_32bit_word(cpu, arg1 + 16, sb.st_gid); |
582 |
store_32bit_word(cpu, arg1 + 20, sb.st_rdev); |
583 |
#if 0 |
584 |
store_64bit_word(cpu, arg1 + 24, sb.st_atimespec.tv_sec); |
585 |
store_64bit_word(cpu, arg1 + 32, sb.st_atimespec.tv_nsec); |
586 |
store_64bit_word(cpu, arg1 + 40, sb.st_mtimespec.tv_sec); |
587 |
store_64bit_word(cpu, arg1 + 48, sb.st_mtimespec.tv_nsec); |
588 |
store_64bit_word(cpu, arg1 + 56, sb.st_ctimespec.tv_sec); |
589 |
store_64bit_word(cpu, arg1 + 64, sb.st_ctimespec.tv_nsec); |
590 |
|
591 |
store_64bit_word(cpu, arg1 + 72, sb.st_size); |
592 |
store_64bit_word(cpu, arg1 + 80, sb.st_blocks); |
593 |
store_64bit_word(cpu, arg1 + 88, sb.st_blksize); |
594 |
store_64bit_word(cpu, arg1 + 92, sb.st_flags); |
595 |
store_64bit_word(cpu, arg1 + 96, sb.st_gen); |
596 |
#endif |
597 |
} |
598 |
return res; |
599 |
} |
600 |
|
601 |
|
602 |
/* |
603 |
* useremul_mmap(): |
604 |
*/ |
605 |
int64_t useremul_mmap(struct cpu *cpu, int64_t *errnop, |
606 |
uint64_t arg0, int64_t arg1, int64_t arg2, |
607 |
int64_t arg3, int64_t arg4, uint64_t arg5) |
608 |
{ |
609 |
int64_t res = 0; |
610 |
|
611 |
/* arg0..5: addr, len, prot, flags, fd, offset */ |
612 |
debug("[ mmap(0x%llx,%lli,%i,%i,%i,%lli) ]\n", |
613 |
(long long)arg0, (long long)arg1, |
614 |
(int)arg2, (int)arg3, (int)arg4, (long long)arg5); |
615 |
|
616 |
if (arg4 != -1) { |
617 |
fatal("[ useremul_mmap(): fd != -1: TODO ]\n"); |
618 |
cpu->running = 0; |
619 |
return 0; |
620 |
} |
621 |
|
622 |
/* Anonymous allocation. */ |
623 |
if (arg0 != 0) { |
624 |
fatal("[ useremul_mmap(): addr != 0: TODO ]\n"); |
625 |
cpu->running = 0; |
626 |
return 0; |
627 |
} |
628 |
|
629 |
fatal("[ useremul_mmap(): TODO ]\n"); |
630 |
|
631 |
res = 0x18000000ULL; |
632 |
|
633 |
return res; |
634 |
} |
635 |
|
636 |
|
637 |
/*****************************************************************************/ |
638 |
|
639 |
|
640 |
/* |
641 |
* useremul__freebsd(): |
642 |
* |
643 |
* FreeBSD/Alpha syscall emulation. |
644 |
* |
645 |
* TODO: How to make this work nicely with non-Alpha archs. |
646 |
*/ |
647 |
static void useremul__freebsd(struct cpu *cpu, uint32_t code) |
648 |
{ |
649 |
int nr; |
650 |
int64_t res = 0, err = 0; |
651 |
uint64_t arg0, arg1, arg2, arg3, arg4, arg5; |
652 |
|
653 |
nr = cpu->cd.alpha.r[ALPHA_V0]; |
654 |
arg0 = cpu->cd.alpha.r[ALPHA_A0]; |
655 |
arg1 = cpu->cd.alpha.r[ALPHA_A1]; |
656 |
arg2 = cpu->cd.alpha.r[ALPHA_A2]; |
657 |
arg3 = cpu->cd.alpha.r[ALPHA_A3]; |
658 |
arg4 = cpu->cd.alpha.r[ALPHA_A4]; |
659 |
arg5 = cpu->cd.alpha.r[ALPHA_A5]; |
660 |
|
661 |
if (nr == 198) { |
662 |
/* ___syscall */ |
663 |
nr = arg0; |
664 |
arg0 = arg1; |
665 |
arg1 = arg2; |
666 |
arg2 = arg3; |
667 |
arg3 = arg4; |
668 |
arg4 = arg5; |
669 |
/* TODO: stack arguments */ |
670 |
} |
671 |
|
672 |
switch (nr) { |
673 |
|
674 |
case 1: res = useremul_exit(cpu, arg0); |
675 |
break; |
676 |
|
677 |
case 4: res = useremul_write(cpu, &err, arg0, arg1, arg2); |
678 |
break; |
679 |
|
680 |
case 17:res = useremul_break(cpu, arg0); |
681 |
break; |
682 |
|
683 |
case 20:res = useremul_getpid(cpu); |
684 |
break; |
685 |
|
686 |
case 24:res = useremul_getuid(cpu); |
687 |
break; |
688 |
|
689 |
case 43:res = useremul_getegid(cpu); |
690 |
break; |
691 |
|
692 |
case 47:res = useremul_getgid(cpu); |
693 |
break; |
694 |
|
695 |
case 58:res = useremul_readlink(cpu, &err, arg0, arg1, arg2); |
696 |
break; |
697 |
|
698 |
case 117:res = useremul_getrusage(cpu, &err, arg0, arg1); |
699 |
break; |
700 |
|
701 |
case 189:res = useremul_fstat(cpu, &err, arg0, arg1); |
702 |
break; |
703 |
|
704 |
case 197:res = useremul_mmap(cpu, &err, arg0, arg1, arg2, arg3, |
705 |
arg4, arg5); |
706 |
break; |
707 |
|
708 |
default:fatal("useremul__freebsd(): syscall %i not yet " |
709 |
"implemented\n", nr); |
710 |
cpu->running = 0; |
711 |
} |
712 |
|
713 |
if (err) { |
714 |
cpu->cd.alpha.r[ALPHA_A3] = 1; |
715 |
cpu->cd.alpha.r[ALPHA_V0] = err; |
716 |
} else { |
717 |
cpu->cd.alpha.r[ALPHA_A3] = 0; |
718 |
cpu->cd.alpha.r[ALPHA_V0] = res; |
719 |
} |
720 |
} |
721 |
|
722 |
|
723 |
/* |
724 |
* useremul__linux(): |
725 |
* |
726 |
* Linux syscall emulation. |
727 |
* |
728 |
* TODO: How to make this work nicely with non-PPC archs. |
729 |
*/ |
730 |
static void useremul__linux(struct cpu *cpu, uint32_t code) |
731 |
{ |
732 |
int nr; |
733 |
int64_t res = 0, err = 0; |
734 |
uint64_t arg0, arg1, arg2, arg3; |
735 |
|
736 |
if (code != 0) { |
737 |
fatal("useremul__linux(): code %i: TODO\n", (int)code); |
738 |
exit(1); |
739 |
} |
740 |
|
741 |
nr = cpu->cd.ppc.gpr[0]; |
742 |
arg0 = cpu->cd.ppc.gpr[3]; |
743 |
arg1 = cpu->cd.ppc.gpr[4]; |
744 |
arg2 = cpu->cd.ppc.gpr[5]; |
745 |
arg3 = cpu->cd.ppc.gpr[6]; |
746 |
|
747 |
switch (nr) { |
748 |
|
749 |
case LINUX_PPC_SYS_exit: |
750 |
res = useremul_exit(cpu, arg0); |
751 |
break; |
752 |
|
753 |
case LINUX_PPC_SYS_write: |
754 |
res = useremul_write(cpu, &err, arg0, arg1, arg2); |
755 |
break; |
756 |
|
757 |
default: |
758 |
fatal("useremul__linux(): syscall %i not yet implemented\n", |
759 |
nr); |
760 |
cpu->running = 0; |
761 |
} |
762 |
|
763 |
/* return res: TODO */ |
764 |
} |
765 |
|
766 |
|
767 |
/* |
768 |
* useremul__netbsd(): |
769 |
* |
770 |
* NetBSD syscall emulation. |
771 |
*/ |
772 |
static void useremul__netbsd(struct cpu *cpu, uint32_t code) |
773 |
{ |
774 |
int error_flag = 0, result_high_set = 0; |
775 |
uint64_t arg0=0,arg1=0,arg2=0,arg3=0,stack0=0,stack1=0,stack2=0; |
776 |
int sysnr = 0; |
777 |
int64_t error_code = 0; |
778 |
uint64_t result_low = 0; |
779 |
uint64_t result_high = 0; |
780 |
struct timeval tv; |
781 |
struct timezone tz; |
782 |
int descr; |
783 |
uint64_t length, mipsbuf, flags; |
784 |
unsigned char *charbuf; |
785 |
uint32_t sysctl_name, sysctl_namelen, sysctl_oldp, |
786 |
sysctl_oldlenp, sysctl_newp, sysctl_newlen; |
787 |
uint32_t name0, name1, name2, name3; |
788 |
|
789 |
switch (cpu->machine->arch) { |
790 |
case ARCH_MIPS: |
791 |
sysnr = cpu->cd.mips.gpr[MIPS_GPR_V0]; |
792 |
if (sysnr == NETBSD_SYS___syscall) { |
793 |
sysnr = cpu->cd.mips.gpr[MIPS_GPR_A0] + |
794 |
(cpu->cd.mips.gpr[MIPS_GPR_A1] << 32); |
795 |
arg0 = cpu->cd.mips.gpr[MIPS_GPR_A2]; |
796 |
arg1 = cpu->cd.mips.gpr[MIPS_GPR_A3]; |
797 |
/* TODO: stack arguments? Are these correct? */ |
798 |
arg2 = load_32bit_word(cpu, |
799 |
cpu->cd.mips.gpr[MIPS_GPR_SP] + 8); |
800 |
arg3 = load_32bit_word(cpu, |
801 |
cpu->cd.mips.gpr[MIPS_GPR_SP] + 16); |
802 |
stack0 = load_32bit_word(cpu, |
803 |
cpu->cd.mips.gpr[MIPS_GPR_SP] + 24); |
804 |
stack1 = load_32bit_word(cpu, |
805 |
cpu->cd.mips.gpr[MIPS_GPR_SP] + 32); |
806 |
stack2 = load_32bit_word(cpu, |
807 |
cpu->cd.mips.gpr[MIPS_GPR_SP] + 40); |
808 |
} else { |
809 |
arg0 = cpu->cd.mips.gpr[MIPS_GPR_A0]; |
810 |
arg1 = cpu->cd.mips.gpr[MIPS_GPR_A1]; |
811 |
arg2 = cpu->cd.mips.gpr[MIPS_GPR_A2]; |
812 |
arg3 = cpu->cd.mips.gpr[MIPS_GPR_A3]; |
813 |
/* TODO: stack arguments? Are these correct? */ |
814 |
stack0 = load_32bit_word(cpu, |
815 |
cpu->cd.mips.gpr[MIPS_GPR_SP] + 4); |
816 |
stack1 = load_32bit_word(cpu, |
817 |
cpu->cd.mips.gpr[MIPS_GPR_SP] + 8); |
818 |
stack2 = load_32bit_word(cpu, |
819 |
cpu->cd.mips.gpr[MIPS_GPR_SP] + 12); |
820 |
} |
821 |
break; |
822 |
|
823 |
case ARCH_PPC: |
824 |
sysnr = cpu->cd.ppc.gpr[0]; |
825 |
arg0 = cpu->cd.ppc.gpr[3]; |
826 |
arg1 = cpu->cd.ppc.gpr[4]; |
827 |
arg2 = cpu->cd.ppc.gpr[5]; |
828 |
arg3 = cpu->cd.ppc.gpr[6]; |
829 |
/* TODO: More arguments? Stack arguments? */ |
830 |
break; |
831 |
} |
832 |
|
833 |
/* |
834 |
* NOTE: The following code should not be CPU arch dependant! |
835 |
* (TODO) |
836 |
*/ |
837 |
|
838 |
switch (sysnr) { |
839 |
|
840 |
case NETBSD_SYS_exit: |
841 |
debug("[ exit(%i) ]\n", (int)arg0); |
842 |
cpu->running = 0; |
843 |
cpu->machine->exit_without_entering_debugger = 1; |
844 |
break; |
845 |
|
846 |
case NETBSD_SYS_read: |
847 |
debug("[ read(%i,0x%llx,%lli) ]\n", |
848 |
(int)arg0, (long long)arg1, (long long)arg2); |
849 |
|
850 |
if (arg2 != 0) { |
851 |
charbuf = malloc(arg2); |
852 |
if (charbuf == NULL) { |
853 |
fprintf(stderr, "out of memory in " |
854 |
"useremul__netbsd()\n"); |
855 |
exit(1); |
856 |
} |
857 |
result_low = read(arg0, charbuf, arg2); |
858 |
if ((int64_t)result_low < 0) { |
859 |
error_code = errno; |
860 |
error_flag = 1; |
861 |
} |
862 |
|
863 |
/* TODO: address validity check */ |
864 |
cpu->memory_rw(cpu, cpu->mem, arg1, charbuf, |
865 |
arg2, MEM_WRITE, CACHE_DATA); |
866 |
free(charbuf); |
867 |
} |
868 |
break; |
869 |
|
870 |
case NETBSD_SYS_write: |
871 |
descr = arg0; |
872 |
mipsbuf = arg1; |
873 |
length = arg2; |
874 |
debug("[ write(%i,0x%llx,%lli) ]\n", |
875 |
(int)descr, (long long)mipsbuf, (long long)length); |
876 |
if (length != 0) { |
877 |
charbuf = malloc(length); |
878 |
if (charbuf == NULL) { |
879 |
fprintf(stderr, "out of memory in " |
880 |
"useremul__netbsd()\n"); |
881 |
exit(1); |
882 |
} |
883 |
/* TODO: address validity check */ |
884 |
cpu->memory_rw(cpu, cpu->mem, mipsbuf, charbuf, |
885 |
length, MEM_READ, CACHE_DATA); |
886 |
result_low = write(descr, charbuf, length); |
887 |
if ((int64_t)result_low < 0) { |
888 |
error_code = errno; |
889 |
error_flag = 1; |
890 |
} |
891 |
free(charbuf); |
892 |
} |
893 |
break; |
894 |
|
895 |
case NETBSD_SYS_open: |
896 |
charbuf = get_userland_string(cpu, arg0); |
897 |
debug("[ open(\"%s\", 0x%llx, 0x%llx) ]\n", |
898 |
charbuf, (long long)arg1, (long long)arg2); |
899 |
result_low = open((char *)charbuf, arg1, arg2); |
900 |
if ((int64_t)result_low < 0) { |
901 |
error_flag = 1; |
902 |
error_code = errno; |
903 |
} |
904 |
free(charbuf); |
905 |
break; |
906 |
|
907 |
case NETBSD_SYS_close: |
908 |
descr = arg0; |
909 |
debug("[ close(%i) ]\n", (int)descr); |
910 |
error_code = close(descr); |
911 |
if (error_code != 0) |
912 |
error_flag = 1; |
913 |
break; |
914 |
|
915 |
case NETBSD_SYS_access: |
916 |
charbuf = get_userland_string(cpu, arg0); |
917 |
debug("[ access(\"%s\", 0x%llx) ]\n", |
918 |
charbuf, (long long) arg1); |
919 |
result_low = access((char *)charbuf, arg1); |
920 |
if (result_low != 0) { |
921 |
error_flag = 1; |
922 |
error_code = errno; |
923 |
} |
924 |
free(charbuf); |
925 |
break; |
926 |
|
927 |
case NETBSD_SYS_getuid: |
928 |
result_low = useremul_getuid(cpu); |
929 |
break; |
930 |
|
931 |
case NETBSD_SYS_geteuid: |
932 |
debug("[ geteuid() ]\n"); |
933 |
result_low = geteuid(); |
934 |
break; |
935 |
|
936 |
case NETBSD_SYS_getgid: |
937 |
debug("[ getgid() ]\n"); |
938 |
result_low = getgid(); |
939 |
break; |
940 |
|
941 |
case NETBSD_SYS_getegid: |
942 |
debug("[ getegid() ]\n"); |
943 |
result_low = getegid(); |
944 |
break; |
945 |
|
946 |
case NETBSD_SYS_getfsstat: |
947 |
mipsbuf = arg0; |
948 |
length = arg1; |
949 |
flags = arg2; |
950 |
debug("[ getfsstat(0x%llx,%lli,0x%llx) ]\n", |
951 |
(long long)mipsbuf, (long long)length, |
952 |
(long long)flags); |
953 |
|
954 |
result_low = 0; /* nr of mounted filesystems, |
955 |
for now (TODO) */ |
956 |
|
957 |
/* Fill in the struct statfs buffer at arg0... |
958 |
copy data from the host's getfsstat(). TODO */ |
959 |
#if 1 |
960 |
result_low = 1; |
961 |
store_32bit_word(cpu, mipsbuf + 0, 0); /* f_spare2 */ |
962 |
store_32bit_word(cpu, mipsbuf + 4, 1024); /* f_bsize */ |
963 |
store_32bit_word(cpu, mipsbuf + 8, 65536); /* f_iosize */ |
964 |
store_32bit_word(cpu, mipsbuf + 12, 100); /* f_blocks */ |
965 |
store_32bit_word(cpu, mipsbuf + 16, 50); /* f_bfree */ |
966 |
store_32bit_word(cpu, mipsbuf + 20, 10); /* f_bavail */ |
967 |
store_32bit_word(cpu, mipsbuf + 24, 50); /* f_files */ |
968 |
store_32bit_word(cpu, mipsbuf + 28, 25); /* f_ffree */ |
969 |
store_32bit_word(cpu, mipsbuf + 28, 0x1234); /* f_fsid */ |
970 |
store_32bit_word(cpu, mipsbuf + 32, 0); /* f_owner */ |
971 |
store_32bit_word(cpu, mipsbuf + 36, 0); /* f_type */ |
972 |
store_32bit_word(cpu, mipsbuf + 40, 0); /* f_flags */ |
973 |
store_32bit_word(cpu, mipsbuf + 44, 0); /* f_fspare[0] */ |
974 |
store_32bit_word(cpu, mipsbuf + 48, 0); /* f_fspare[1] */ |
975 |
store_string(cpu, mipsbuf + 52, "ffs"); /* f_typename */ |
976 |
#define MFSNAMELEN 16 |
977 |
#define MNAMELEN 90 |
978 |
store_string(cpu, mipsbuf + 52 + MFSNAMELEN, "/"); |
979 |
/* f_mntonname */ |
980 |
store_string(cpu, mipsbuf + 52 + MFSNAMELEN + MNAMELEN, "ffs"); |
981 |
/* f_mntfromname */ |
982 |
#endif |
983 |
break; |
984 |
|
985 |
case NETBSD_SYS_break: |
986 |
useremul_break(cpu, arg0); |
987 |
break; |
988 |
|
989 |
case NETBSD_SYS_readlink: |
990 |
result_low = useremul_readlink(cpu, &error_code, |
991 |
arg0, arg1, arg2); |
992 |
break; |
993 |
|
994 |
case NETBSD_SYS_sync: |
995 |
useremul_sync(cpu); |
996 |
break; |
997 |
|
998 |
case NETBSD_SYS_gettimeofday: |
999 |
debug("[ gettimeofday(0x%llx,0x%llx) ]\n", |
1000 |
(long long)arg0, (long long)arg1); |
1001 |
result_low = gettimeofday(&tv, &tz); |
1002 |
if (result_low) { |
1003 |
error_flag = 1; |
1004 |
error_code = errno; |
1005 |
} else { |
1006 |
if (arg0 != 0) { |
1007 |
/* Store tv.tv_sec and tv.tv_usec as |
1008 |
'long' (32-bit) values: */ |
1009 |
store_32bit_word(cpu, arg0 + 0, |
1010 |
tv.tv_sec); |
1011 |
store_32bit_word(cpu, arg0 + 4, |
1012 |
tv.tv_usec); |
1013 |
} |
1014 |
if (arg1 != 0) { |
1015 |
/* Store tz.tz_minuteswest and |
1016 |
tz.tz_dsttime as 'long' |
1017 |
(32-bit) values: */ |
1018 |
store_32bit_word(cpu, arg1 + 0, |
1019 |
tz.tz_minuteswest); |
1020 |
store_32bit_word(cpu, arg1 + 4, |
1021 |
tz.tz_dsttime); |
1022 |
} |
1023 |
} |
1024 |
break; |
1025 |
|
1026 |
case NETBSD_SYS_mmap: |
1027 |
debug("[ mmap(0x%x,%i,%i,%i,%i,0x%llx): TODO ]\n", |
1028 |
arg0, arg1, arg2, arg3, stack0, (long long)stack1); |
1029 |
|
1030 |
if ((int32_t)stack0 == -1) { |
1031 |
/* |
1032 |
* Anonymous allocation: |
1033 |
* |
1034 |
* TODO: Fix this!!! |
1035 |
* |
1036 |
* This quick hack simply allocates anonymous |
1037 |
* mmap memory approximately below the stack. |
1038 |
* This will probably not work with dynamically |
1039 |
* loaded libraries and such. |
1040 |
*/ |
1041 |
static uint32_t mmap_anon_ptr = 0x70000000; |
1042 |
mmap_anon_ptr -= arg1; |
1043 |
/* round down to page boundary: */ |
1044 |
mmap_anon_ptr &= ~4095; |
1045 |
debug("ANON: %i bytes at 0x%08x (TODO: not " |
1046 |
"working yet?)\n", (int)arg1, |
1047 |
mmap_anon_ptr); |
1048 |
result_low = mmap_anon_ptr; |
1049 |
} else { |
1050 |
/* Return NULL for now */ |
1051 |
} |
1052 |
break; |
1053 |
|
1054 |
case NETBSD_SYS_dup: |
1055 |
debug("[ dup(%i) ]\n", (int)arg0); |
1056 |
result_low = dup(arg0); |
1057 |
if ((int64_t)result_low < 0) { |
1058 |
error_code = errno; |
1059 |
error_flag = 1; |
1060 |
} |
1061 |
break; |
1062 |
|
1063 |
case NETBSD_SYS_socket: |
1064 |
debug("[ socket(%i,%i,%i) ]\n", |
1065 |
(int)arg0, (int)arg1, (int)arg2); |
1066 |
result_low = socket(arg0,arg1,arg2); |
1067 |
if ((int64_t)result_low < 0) { |
1068 |
error_code = errno; |
1069 |
error_flag = 1; |
1070 |
} |
1071 |
break; |
1072 |
|
1073 |
case NETBSD_SYS_issetugid: |
1074 |
debug("[ issetugid() ]\n"); |
1075 |
/* TODO: actually call the real issetugid? */ |
1076 |
break; |
1077 |
|
1078 |
case NETBSD_SYS_nanosleep: |
1079 |
debug("[ nanosleep(0x%llx,0x%llx) ]\n", |
1080 |
(long long)arg0, (long long)arg1); |
1081 |
|
1082 |
if (arg0 != 0) { |
1083 |
uint32_t sec = load_32bit_word(cpu, arg0 + 0); |
1084 |
uint32_t nsec = load_32bit_word(cpu, arg0 + 4); |
1085 |
struct timespec ts; |
1086 |
ts.tv_sec = sec; |
1087 |
ts.tv_nsec = nsec; |
1088 |
result_low = nanosleep(&ts, NULL); |
1089 |
if (result_low) |
1090 |
fprintf(stderr, "netbsd emulation " |
1091 |
"nanosleep() failed\n"); |
1092 |
/* TODO: arg1 */ |
1093 |
} else { |
1094 |
error_flag = 1; |
1095 |
error_code = 14; /* EFAULT */ |
1096 |
} |
1097 |
break; |
1098 |
|
1099 |
case NETBSD_SYS___fstat13: |
1100 |
debug("[ __fstat13(%lli,0x%llx): TODO ]\n", |
1101 |
(long long)arg0, (long long)arg1); |
1102 |
error_flag = 1; |
1103 |
error_code = 9; /* EBADF */ |
1104 |
break; |
1105 |
|
1106 |
case NETBSD_SYS___getcwd: |
1107 |
debug("[ __getcwd(0x%llx,%lli): TODO ]\n", |
1108 |
(long long)arg0, (long long)arg1); |
1109 |
if (arg1 != 0 && arg1 < 500000) { |
1110 |
char *buf = malloc(arg1); |
1111 |
unsigned int i; |
1112 |
|
1113 |
getcwd(buf, arg1); |
1114 |
|
1115 |
/* zero-terminate in host's space: */ |
1116 |
buf[arg1 - 1] = 0; |
1117 |
|
1118 |
for (i = 0; i<arg1 && i < arg1; i++) |
1119 |
cpu->memory_rw(cpu, cpu->mem, arg0 + i, |
1120 |
(unsigned char *)&buf[i], 1, |
1121 |
MEM_WRITE, CACHE_NONE); |
1122 |
|
1123 |
/* zero-terminate in emulated space: */ |
1124 |
cpu->memory_rw(cpu, cpu->mem, arg0 + arg1-1, |
1125 |
(unsigned char *)&buf[arg1 - 1], |
1126 |
1, MEM_WRITE, CACHE_NONE); |
1127 |
|
1128 |
free(buf); |
1129 |
} |
1130 |
result_low = arg0; |
1131 |
break; |
1132 |
|
1133 |
case NETBSD_SYS___sigaction14: |
1134 |
debug("[ __sigaction14(%lli,0x%llx,0x%llx): TODO ]\n", |
1135 |
(long long)arg0, (long long)arg1, (long long)arg2); |
1136 |
error_flag = 1; |
1137 |
error_code = 9; /* EBADF */ |
1138 |
break; |
1139 |
|
1140 |
case NETBSD_SYS___sysctl: |
1141 |
sysctl_name = arg0; |
1142 |
sysctl_namelen = arg1; |
1143 |
sysctl_oldp = arg2; |
1144 |
sysctl_oldlenp = arg3; |
1145 |
sysctl_newp = load_32bit_word(cpu, |
1146 |
cpu->cd.mips.gpr[MIPS_GPR_SP]); |
1147 |
/* TODO: +4 and +8 ?? */ |
1148 |
sysctl_newlen = load_32bit_word(cpu, |
1149 |
cpu->cd.mips.gpr[MIPS_GPR_SP] + 4); |
1150 |
debug("[ __sysctl("); |
1151 |
|
1152 |
name0 = load_32bit_word(cpu, sysctl_name + 0); |
1153 |
name1 = load_32bit_word(cpu, sysctl_name + 4); |
1154 |
name2 = load_32bit_word(cpu, sysctl_name + 8); |
1155 |
name3 = load_32bit_word(cpu, sysctl_name + 12); |
1156 |
debug("name (@ 0x%08x) = %i, %i, %i, %i) ]\n", |
1157 |
sysctl_name, name0, name1, name2, name3); |
1158 |
|
1159 |
if (name0 == CTL_KERN && name1 == KERN_HOSTNAME) { |
1160 |
char hname[256]; |
1161 |
hname[0] = '\0'; |
1162 |
gethostname(hname, sizeof(hname)); |
1163 |
hname[sizeof(hname)-1] = '\0'; |
1164 |
if (sysctl_oldp != 0) |
1165 |
store_string(cpu, sysctl_oldp, hname); |
1166 |
if (sysctl_oldlenp != 0) |
1167 |
store_32bit_word(cpu, sysctl_oldlenp, |
1168 |
strlen(hname)); |
1169 |
} else if (name0 == CTL_HW && name1 == HW_PAGESIZE) { |
1170 |
if (sysctl_oldp != 0) |
1171 |
store_32bit_word(cpu, |
1172 |
sysctl_oldp, 4096); |
1173 |
if (sysctl_oldlenp != 0) |
1174 |
store_32bit_word(cpu, |
1175 |
sysctl_oldlenp, sizeof(uint32_t)); |
1176 |
} else { |
1177 |
error_flag = 1; |
1178 |
error_code = 2; /* ENOENT */ |
1179 |
} |
1180 |
break; |
1181 |
|
1182 |
default: |
1183 |
fatal("[ UNIMPLEMENTED netbsd syscall %i ]\n", sysnr); |
1184 |
error_flag = 1; |
1185 |
error_code = 78; /* ENOSYS */ |
1186 |
} |
1187 |
|
1188 |
|
1189 |
switch (cpu->machine->arch) { |
1190 |
case ARCH_MIPS: |
1191 |
/* |
1192 |
* NetBSD/mips return values: |
1193 |
* |
1194 |
* a3 is 0 if the syscall was ok, otherwise 1. |
1195 |
* v0 (and sometimes v1) contain the result value. |
1196 |
*/ |
1197 |
cpu->cd.mips.gpr[MIPS_GPR_A3] = error_flag; |
1198 |
if (error_flag) |
1199 |
cpu->cd.mips.gpr[MIPS_GPR_V0] = error_code; |
1200 |
else |
1201 |
cpu->cd.mips.gpr[MIPS_GPR_V0] = result_low; |
1202 |
|
1203 |
if (result_high_set) |
1204 |
cpu->cd.mips.gpr[MIPS_GPR_V1] = result_high; |
1205 |
break; |
1206 |
case ARCH_PPC: |
1207 |
/* |
1208 |
* NetBSD/powerpc return values: |
1209 |
* |
1210 |
* TODO |
1211 |
*/ |
1212 |
cpu->cd.ppc.gpr[3] = result_low; |
1213 |
|
1214 |
if (result_high_set) |
1215 |
cpu->cd.ppc.gpr[4] = result_high; |
1216 |
break; |
1217 |
} |
1218 |
} |
1219 |
|
1220 |
|
1221 |
/* |
1222 |
* useremul__ultrix(): |
1223 |
* |
1224 |
* Ultrix syscall emulation. |
1225 |
*/ |
1226 |
static void useremul__ultrix(struct cpu *cpu, uint32_t code) |
1227 |
{ |
1228 |
int error_flag = 0, result_high_set = 0; |
1229 |
uint64_t arg0,arg1,arg2,arg3,stack0=0,stack1=0,stack2; |
1230 |
int sysnr = 0; |
1231 |
int64_t error_code = 0; |
1232 |
uint64_t result_low = 0; |
1233 |
uint64_t result_high = 0; |
1234 |
struct timeval tv; |
1235 |
struct timezone tz; |
1236 |
int descr; |
1237 |
uint64_t length, mipsbuf; |
1238 |
unsigned char *charbuf; |
1239 |
|
1240 |
/* |
1241 |
* Ultrix/pmax gets the syscall number in register v0, |
1242 |
* and syscall arguments in registers a0, a1, ... |
1243 |
* |
1244 |
* TODO: If there is a __syscall-like syscall (as in NetBSD) |
1245 |
* then 64-bit args may be passed in two registers or something... |
1246 |
* If so, then copy from the section above (NetBSD). |
1247 |
*/ |
1248 |
sysnr = cpu->cd.mips.gpr[MIPS_GPR_V0]; |
1249 |
|
1250 |
arg0 = cpu->cd.mips.gpr[MIPS_GPR_A0]; |
1251 |
arg1 = cpu->cd.mips.gpr[MIPS_GPR_A1]; |
1252 |
arg2 = cpu->cd.mips.gpr[MIPS_GPR_A2]; |
1253 |
arg3 = cpu->cd.mips.gpr[MIPS_GPR_A3]; |
1254 |
/* TODO: stack arguments? Are these correct? */ |
1255 |
stack0 = load_32bit_word(cpu, cpu->cd.mips.gpr[MIPS_GPR_SP] + 0); |
1256 |
stack1 = load_32bit_word(cpu, cpu->cd.mips.gpr[MIPS_GPR_SP] + 4); |
1257 |
stack2 = load_32bit_word(cpu, cpu->cd.mips.gpr[MIPS_GPR_SP] + 8); |
1258 |
|
1259 |
switch (sysnr) { |
1260 |
|
1261 |
case ULTRIX_SYS_exit: |
1262 |
debug("[ exit(%i) ]\n", (int)arg0); |
1263 |
cpu->running = 0; |
1264 |
cpu->machine->exit_without_entering_debugger = 1; |
1265 |
break; |
1266 |
|
1267 |
case ULTRIX_SYS_read: |
1268 |
debug("[ read(%i,0x%llx,%lli) ]\n", |
1269 |
(int)arg0, (long long)arg1, (long long)arg2); |
1270 |
|
1271 |
if (arg2 != 0) { |
1272 |
charbuf = malloc(arg2); |
1273 |
if (charbuf == NULL) { |
1274 |
fprintf(stderr, "out of memory in " |
1275 |
"useremul__ultrix()\n"); |
1276 |
exit(1); |
1277 |
} |
1278 |
|
1279 |
result_low = read(arg0, charbuf, arg2); |
1280 |
if ((int64_t)result_low < 0) { |
1281 |
error_code = errno; |
1282 |
error_flag = 1; |
1283 |
} |
1284 |
|
1285 |
/* TODO: address validity check */ |
1286 |
cpu->memory_rw(cpu, cpu->mem, arg1, charbuf, |
1287 |
arg2, MEM_WRITE, CACHE_DATA); |
1288 |
|
1289 |
free(charbuf); |
1290 |
} |
1291 |
break; |
1292 |
|
1293 |
case ULTRIX_SYS_write: |
1294 |
descr = arg0; |
1295 |
mipsbuf = arg1; |
1296 |
length = arg2; |
1297 |
debug("[ write(%i,0x%llx,%lli) ]\n", |
1298 |
(int)descr, (long long)mipsbuf, (long long)length); |
1299 |
|
1300 |
if (length != 0) { |
1301 |
charbuf = malloc(length); |
1302 |
if (charbuf == NULL) { |
1303 |
fprintf(stderr, "out of memory in " |
1304 |
"useremul__ultrix()\n"); |
1305 |
exit(1); |
1306 |
} |
1307 |
|
1308 |
/* TODO: address validity check */ |
1309 |
cpu->memory_rw(cpu, cpu->mem, mipsbuf, charbuf, |
1310 |
length, MEM_READ, CACHE_DATA); |
1311 |
|
1312 |
result_low = write(descr, charbuf, length); |
1313 |
if ((int64_t)result_low < 0) { |
1314 |
error_code = errno; |
1315 |
error_flag = 1; |
1316 |
} |
1317 |
free(charbuf); |
1318 |
} |
1319 |
break; |
1320 |
|
1321 |
case ULTRIX_SYS_open: |
1322 |
charbuf = get_userland_string(cpu, arg0); |
1323 |
debug("[ open(\"%s\", 0x%llx, 0x%llx) ]\n", |
1324 |
charbuf, (long long)arg1, (long long)arg2); |
1325 |
|
1326 |
result_low = open((char *)charbuf, arg1, arg2); |
1327 |
if ((int64_t)result_low < 0) { |
1328 |
error_flag = 1; |
1329 |
error_code = errno; |
1330 |
} |
1331 |
free(charbuf); |
1332 |
break; |
1333 |
|
1334 |
case ULTRIX_SYS_close: |
1335 |
descr = arg0; |
1336 |
debug("[ close(%i) ]\n", (int)descr); |
1337 |
|
1338 |
/* Special case because some Ultrix programs tend |
1339 |
to close low descriptors: */ |
1340 |
if (descr <= 2) { |
1341 |
error_flag = 1; |
1342 |
error_code = 2; /* TODO: Ultrix ENOENT error code */ |
1343 |
break; |
1344 |
} |
1345 |
|
1346 |
error_code = close(descr); |
1347 |
if (error_code != 0) |
1348 |
error_flag = 1; |
1349 |
break; |
1350 |
|
1351 |
case ULTRIX_SYS_break: |
1352 |
useremul_break(cpu, arg0); |
1353 |
break; |
1354 |
|
1355 |
case ULTRIX_SYS_sync: |
1356 |
useremul_sync(cpu); |
1357 |
break; |
1358 |
|
1359 |
case ULTRIX_SYS_getuid: |
1360 |
result_low = useremul_getuid(cpu); |
1361 |
break; |
1362 |
|
1363 |
case ULTRIX_SYS_getgid: |
1364 |
debug("[ getgid() ]\n"); |
1365 |
result_low = getgid(); |
1366 |
break; |
1367 |
|
1368 |
case ULTRIX_SYS_dup: |
1369 |
debug("[ dup(%i) ]\n", (int)arg0); |
1370 |
result_low = dup(arg0); |
1371 |
if ((int64_t)result_low < 0) { |
1372 |
error_code = errno; |
1373 |
error_flag = 1; |
1374 |
} |
1375 |
break; |
1376 |
|
1377 |
case ULTRIX_SYS_socket: |
1378 |
debug("[ socket(%i,%i,%i) ]\n", |
1379 |
(int)arg0, (int)arg1, (int)arg2); |
1380 |
result_low = socket(arg0,arg1,arg2); |
1381 |
if ((int64_t)result_low < 0) { |
1382 |
error_code = errno; |
1383 |
error_flag = 1; |
1384 |
} |
1385 |
break; |
1386 |
|
1387 |
case ULTRIX_SYS_select: |
1388 |
debug("[ select(%i,0x%x,0x%x,0x%x,0x%x): TODO ]\n", |
1389 |
(int)arg0, (int)arg1, (int)arg2, (int)arg3, (int)stack0); |
1390 |
|
1391 |
/* TODO */ |
1392 |
{ |
1393 |
fd_set fdset; |
1394 |
FD_SET(3, &fdset); |
1395 |
result_low = select(4, &fdset, NULL, NULL, NULL); |
1396 |
} |
1397 |
break; |
1398 |
|
1399 |
case ULTRIX_SYS_setsockopt: |
1400 |
debug("[ setsockopt(%i,%i,%i,0x%x,%i): TODO ]\n", |
1401 |
(int)arg0, (int)arg1, (int)arg2, (int)arg3, (int)stack0); |
1402 |
/* TODO: len is not 4, len is stack0? */ |
1403 |
charbuf = get_userland_buf(cpu, arg3, 4); |
1404 |
/* TODO: endianness of charbuf, etc */ |
1405 |
result_low = setsockopt(arg0, arg1, arg2, (void *)charbuf, 4); |
1406 |
if ((int64_t)result_low < 0) { |
1407 |
error_code = errno; |
1408 |
error_flag = 1; |
1409 |
} |
1410 |
free(charbuf); |
1411 |
printf("setsockopt!!!! res = %i error=%i\n", |
1412 |
(int)result_low, (int)error_code); |
1413 |
break; |
1414 |
|
1415 |
case ULTRIX_SYS_connect: |
1416 |
debug("[ connect(%i,0x%x,%i) ]\n", |
1417 |
(int)arg0, (int)arg1, (int)arg2); |
1418 |
charbuf = get_userland_buf(cpu, arg1, arg2); |
1419 |
result_low = connect(arg0, (void *)charbuf, arg2); |
1420 |
if ((int64_t)result_low < 0) { |
1421 |
error_code = errno; |
1422 |
error_flag = 1; |
1423 |
} |
1424 |
printf("connect!!!! res = %i error=%i\n", |
1425 |
(int)result_low, (int)error_code); |
1426 |
free(charbuf); |
1427 |
break; |
1428 |
|
1429 |
case ULTRIX_SYS_fcntl: |
1430 |
debug("[ fcntl(%i,%i,0x%x): TODO ]\n", |
1431 |
(int)arg0, (int)arg1, (int)arg2); |
1432 |
/* TODO: how about that third argument? */ |
1433 |
result_low = fcntl(arg0, arg1, arg2); |
1434 |
if ((int64_t)result_low < 0) { |
1435 |
error_code = errno; |
1436 |
error_flag = 1; |
1437 |
} |
1438 |
printf("fcntl!!!! res = %i error=%i\n", |
1439 |
(int)result_low, (int)error_code); |
1440 |
break; |
1441 |
|
1442 |
case ULTRIX_SYS_stat43: |
1443 |
charbuf = get_userland_string(cpu, arg0); |
1444 |
debug("[ stat(\"%s\", 0x%llx): TODO ]\n", |
1445 |
charbuf, (long long)arg1); |
1446 |
|
1447 |
if (arg1 != 0) { |
1448 |
struct stat st; |
1449 |
result_low = stat((char *)charbuf, &st); |
1450 |
if ((int64_t)result_low < 0) { |
1451 |
error_flag = 1; |
1452 |
error_code = errno; |
1453 |
} else { |
1454 |
/* Fill in the Ultrix stat struct at arg1: */ |
1455 |
|
1456 |
/* TODO */ |
1457 |
} |
1458 |
} else { |
1459 |
error_flag = 1; |
1460 |
error_code = 1111; /* TODO: ultrix ENOMEM? */ |
1461 |
} |
1462 |
free(charbuf); |
1463 |
break; |
1464 |
|
1465 |
case ULTRIX_SYS_fstat: |
1466 |
result_low = useremul_fstat(cpu, &error_code, arg0, arg1); |
1467 |
break; |
1468 |
|
1469 |
case ULTRIX_SYS_getpagesize: |
1470 |
debug("[ getpagesize() ]\n"); |
1471 |
result_low = 4096; |
1472 |
break; |
1473 |
|
1474 |
case ULTRIX_SYS_getdtablesize: |
1475 |
debug("[ getdtablesize() ]\n"); |
1476 |
result_low = getdtablesize(); |
1477 |
break; |
1478 |
|
1479 |
case ULTRIX_SYS_gethostname: |
1480 |
debug("[ gethostname(0x%llx,%lli) ]\n", |
1481 |
(long long)arg0, (long long)arg1); |
1482 |
result_low = 0; |
1483 |
if (arg1 != 0 && arg1 < 500000) { |
1484 |
unsigned char *buf = malloc(arg1); |
1485 |
unsigned int i; |
1486 |
|
1487 |
result_low = gethostname((char *)buf, arg1); |
1488 |
for (i = 0; i<arg1 && i < arg1; i++) |
1489 |
cpu->memory_rw(cpu, cpu->mem, arg0 + i, |
1490 |
&buf[i], 1, MEM_WRITE, CACHE_NONE); |
1491 |
|
1492 |
free(buf); |
1493 |
} else { |
1494 |
error_flag = 1; |
1495 |
error_code = 5555; /* TODO */ /* ENOMEM */ |
1496 |
} |
1497 |
break; |
1498 |
|
1499 |
case ULTRIX_SYS_writev: |
1500 |
descr = arg0; |
1501 |
debug("[ writev(%lli,0x%llx,%lli) ]\n", |
1502 |
(long long)arg0, (long long)arg1, (long long)arg2); |
1503 |
|
1504 |
if (arg1 != 0) { |
1505 |
unsigned int i, total = 0; |
1506 |
|
1507 |
for (i=0; i<arg2; i++) { |
1508 |
uint32_t iov_base, iov_len; |
1509 |
iov_base = load_32bit_word(cpu, |
1510 |
arg1 + 8*i + 0); /* char * */ |
1511 |
iov_len = load_32bit_word(cpu, |
1512 |
arg1 + 8*i + 4); /* size_t */ |
1513 |
|
1514 |
if (iov_len != 0) { |
1515 |
unsigned char *charbuf = |
1516 |
malloc(iov_len); |
1517 |
if (charbuf == NULL) { |
1518 |
fprintf(stderr, "out of memory" |
1519 |
" in useremul__ultrix()\n"); |
1520 |
exit(1); |
1521 |
} |
1522 |
|
1523 |
/* TODO: address validity check */ |
1524 |
cpu->memory_rw(cpu, cpu->mem, (uint64_t) |
1525 |
iov_base, charbuf, iov_len, |
1526 |
MEM_READ, CACHE_DATA); |
1527 |
total += write(descr, charbuf, iov_len); |
1528 |
free(charbuf); |
1529 |
} |
1530 |
} |
1531 |
|
1532 |
result_low = total; |
1533 |
} |
1534 |
break; |
1535 |
|
1536 |
case ULTRIX_SYS_gethostid: |
1537 |
debug("[ gethostid() ]\n"); |
1538 |
/* This is supposed to return a unique 32-bit host id. */ |
1539 |
result_low = 0x12345678; |
1540 |
break; |
1541 |
|
1542 |
case ULTRIX_SYS_gettimeofday: |
1543 |
debug("[ gettimeofday(0x%llx,0x%llx) ]\n", |
1544 |
(long long)arg0, (long long)arg1); |
1545 |
result_low = gettimeofday(&tv, &tz); |
1546 |
if (result_low) { |
1547 |
error_flag = 1; |
1548 |
error_code = errno; |
1549 |
} else { |
1550 |
if (arg0 != 0) { |
1551 |
/* Store tv.tv_sec and tv.tv_usec |
1552 |
as 'long' (32-bit) values: */ |
1553 |
store_32bit_word(cpu, arg0 + 0, tv.tv_sec); |
1554 |
store_32bit_word(cpu, arg0 + 4, tv.tv_usec); |
1555 |
} |
1556 |
if (arg1 != 0) { |
1557 |
/* Store tz.tz_minuteswest and |
1558 |
tz.tz_dsttime as 'long' (32-bit) values: */ |
1559 |
store_32bit_word(cpu, arg1 + 0, |
1560 |
tz.tz_minuteswest); |
1561 |
store_32bit_word(cpu, arg1 + 4, tz.tz_dsttime); |
1562 |
} |
1563 |
} |
1564 |
break; |
1565 |
|
1566 |
default: |
1567 |
fatal("[ UNIMPLEMENTED ultrix syscall %i ]\n", sysnr); |
1568 |
error_flag = 1; |
1569 |
error_code = 78; /* ENOSYS */ |
1570 |
} |
1571 |
|
1572 |
/* |
1573 |
* Ultrix/mips return values: |
1574 |
* |
1575 |
* TODO |
1576 |
* |
1577 |
* a3 is 0 if the syscall was ok, otherwise 1. |
1578 |
* v0 (and sometimes v1) contain the result value. |
1579 |
*/ |
1580 |
cpu->cd.mips.gpr[MIPS_GPR_A3] = error_flag; |
1581 |
if (error_flag) |
1582 |
cpu->cd.mips.gpr[MIPS_GPR_V0] = error_code; |
1583 |
else |
1584 |
cpu->cd.mips.gpr[MIPS_GPR_V0] = result_low; |
1585 |
|
1586 |
if (result_high_set) |
1587 |
cpu->cd.mips.gpr[MIPS_GPR_V1] = result_high; |
1588 |
|
1589 |
/* TODO */ |
1590 |
} |
1591 |
|
1592 |
|
1593 |
/* |
1594 |
* useremul_name_to_useremul(): |
1595 |
* |
1596 |
* Example: |
1597 |
* Input: name = "netbsd/pmax" |
1598 |
* Output: sets *arch = ARCH_MIPS, *machine_name = "NetBSD/pmax", |
1599 |
* and *cpu_name = "R3000". |
1600 |
*/ |
1601 |
void useremul_name_to_useremul(struct cpu *cpu, char *name, int *arch, |
1602 |
char **machine_name, char **cpu_name) |
1603 |
{ |
1604 |
struct syscall_emul *sep; |
1605 |
|
1606 |
sep = first_syscall_emul; |
1607 |
|
1608 |
while (sep != NULL) { |
1609 |
if (strcasecmp(name, sep->name) == 0) { |
1610 |
if (cpu_family_ptr_by_number(sep->arch) == NULL) { |
1611 |
printf("\nSupport for the CPU family needed" |
1612 |
" for '%s' userland emulation was not" |
1613 |
" enabled at configuration time.\n", |
1614 |
sep->name); |
1615 |
exit(1); |
1616 |
} |
1617 |
|
1618 |
if (cpu != NULL) |
1619 |
cpu->useremul_syscall = sep->f; |
1620 |
|
1621 |
if (arch != NULL) |
1622 |
*arch = sep->arch; |
1623 |
|
1624 |
if (machine_name != NULL) { |
1625 |
*machine_name = strdup(sep->name); |
1626 |
if (*machine_name == NULL) { |
1627 |
printf("out of memory\n"); |
1628 |
exit(1); |
1629 |
} |
1630 |
} |
1631 |
|
1632 |
if (cpu_name != NULL) { |
1633 |
*cpu_name = strdup(sep->cpu_name); |
1634 |
if (*cpu_name == NULL) { |
1635 |
printf("out of memory\n"); |
1636 |
exit(1); |
1637 |
} |
1638 |
} |
1639 |
return; |
1640 |
} |
1641 |
|
1642 |
sep = sep->next; |
1643 |
} |
1644 |
|
1645 |
fatal("Unknown userland emulation '%s'\n", name); |
1646 |
exit(1); |
1647 |
} |
1648 |
|
1649 |
|
1650 |
/* |
1651 |
* add_useremul(): |
1652 |
* |
1653 |
* For internal use, from useremul_init() only. Adds an emulation mode. |
1654 |
*/ |
1655 |
static void add_useremul(char *name, int arch, char *cpu_name, |
1656 |
void (*f)(struct cpu *, uint32_t), |
1657 |
void (*setup)(struct cpu *, int, char **)) |
1658 |
{ |
1659 |
struct syscall_emul *sep; |
1660 |
|
1661 |
sep = malloc(sizeof(struct syscall_emul)); |
1662 |
if (sep == NULL) { |
1663 |
printf("add_useremul(): out of memory\n"); |
1664 |
exit(1); |
1665 |
} |
1666 |
memset(sep, 0, sizeof(sep)); |
1667 |
|
1668 |
sep->name = name; |
1669 |
sep->arch = arch; |
1670 |
sep->cpu_name = cpu_name; |
1671 |
sep->f = f; |
1672 |
sep->setup = setup; |
1673 |
|
1674 |
sep->next = first_syscall_emul; |
1675 |
first_syscall_emul = sep; |
1676 |
} |
1677 |
|
1678 |
|
1679 |
/* |
1680 |
* useremul_list_emuls(): |
1681 |
* |
1682 |
* List all available userland emulation modes. (Actually, only those which |
1683 |
* have CPU support enabled.) |
1684 |
*/ |
1685 |
void useremul_list_emuls(void) |
1686 |
{ |
1687 |
struct syscall_emul *sep; |
1688 |
int iadd = 8; |
1689 |
|
1690 |
sep = first_syscall_emul; |
1691 |
|
1692 |
if (sep == NULL) |
1693 |
return; |
1694 |
|
1695 |
debug("The following userland-only (syscall) emulation modes are" |
1696 |
" available:\n\n"); |
1697 |
debug_indentation(iadd); |
1698 |
|
1699 |
while (sep != NULL) { |
1700 |
if (cpu_family_ptr_by_number(sep->arch) != NULL) { |
1701 |
debug("%s (default CPU \"%s\")\n", |
1702 |
sep->name, sep->cpu_name); |
1703 |
} |
1704 |
|
1705 |
sep = sep->next; |
1706 |
} |
1707 |
|
1708 |
debug_indentation(-iadd); |
1709 |
debug("\n(Most of these modes are bogus.)\n\n"); |
1710 |
} |
1711 |
|
1712 |
|
1713 |
/* |
1714 |
* useremul_init(): |
1715 |
* |
1716 |
* This function should be called before any other useremul_*() function |
1717 |
* is used. |
1718 |
*/ |
1719 |
void useremul_init(void) |
1720 |
{ |
1721 |
/* Note: These are in reverse alphabetic order: */ |
1722 |
|
1723 |
add_useremul("Ultrix", ARCH_MIPS, "R3000", |
1724 |
useremul__ultrix, useremul__ultrix_setup); |
1725 |
|
1726 |
add_useremul("NetBSD/powerpc", ARCH_PPC, "PPC750", |
1727 |
useremul__netbsd, useremul__netbsd_setup); |
1728 |
|
1729 |
add_useremul("NetBSD/pmax", ARCH_MIPS, "R3000", |
1730 |
useremul__netbsd, useremul__netbsd_setup); |
1731 |
|
1732 |
add_useremul("NetBSD/arm", ARCH_ARM, "ARM", |
1733 |
useremul__netbsd, useremul__netbsd_setup); |
1734 |
|
1735 |
add_useremul("NetBSD/amd64", ARCH_X86, "AMD64", |
1736 |
useremul__netbsd, useremul__netbsd_setup); |
1737 |
|
1738 |
add_useremul("Linux/PPC64", ARCH_PPC, "PPC970", |
1739 |
useremul__linux, useremul__linux_setup); |
1740 |
|
1741 |
add_useremul("FreeBSD/Alpha", ARCH_ALPHA, "Alpha", |
1742 |
useremul__freebsd, useremul__freebsd_setup); |
1743 |
} |
1744 |
|