LXR qemu/linux-user/cpu-uname.c

   1/*
   2 *  cpu to uname machine name map
   3 *
   4 *  Copyright (c) 2009 Loïc Minier
   5 *
   6 *  This program is free software; you can redistribute it and/or modify
   7 *  it under the terms of the GNU General Public License as published by
   8 *  the Free Software Foundation; either version 2 of the License, or
   9 *  (at your option) any later version.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15 *
  16 *  You should have received a copy of the GNU General Public License
  17 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20#include <stdio.h>
  21
  22#include "qemu.h"
  23//#include "qemu-common.h"
  24#include "cpu-uname.h"
  25
  26/* return highest utsname machine name for emulated instruction set
  27 *
  28 * NB: the default emulated CPU ("any") might not match any existing CPU, e.g.
  29 * on ARM it has all features turned on, so there is no perfect arch string to
  30 * return here */
  31const char *cpu_to_uname_machine(void *cpu_env)
  32{
  33#if defined(TARGET_ARM) && !defined(TARGET_AARCH64)
  34
  35    /* utsname machine name on linux arm is CPU arch name + endianness, e.g.
  36     * armv7l; to get a list of CPU arch names from the linux source, use:
  37     *     grep arch_name: -A1 linux/arch/arm/mm/proc-*.S
  38     * see arch/arm/kernel/setup.c: setup_processor()
  39     */
  40
  41    /* in theory, endianness is configurable on some ARM CPUs, but this isn't
  42     * used in user mode emulation */
  43#ifdef TARGET_WORDS_BIGENDIAN
  44#define utsname_suffix "b"
  45#else
  46#define utsname_suffix "l"
  47#endif
  48    if (arm_feature(cpu_env, ARM_FEATURE_V7))
  49        return "armv7" utsname_suffix;
  50    if (arm_feature(cpu_env, ARM_FEATURE_V6))
  51        return "armv6" utsname_suffix;
  52    /* earliest emulated CPU is ARMv5TE; qemu can emulate the 1026, but not its
  53     * Jazelle support */
  54    return "armv5te" utsname_suffix;
  55#elif defined(TARGET_X86_64)
  56    return "x86-64";
  57#elif defined(TARGET_I386)
  58    /* see arch/x86/kernel/cpu/bugs.c: check_bugs(), 386, 486, 586, 686 */
  59    CPUState *cpu = ENV_GET_CPU((CPUX86State *)cpu_env);
  60    int family = object_property_get_int(OBJECT(cpu), "family", NULL);
  61    if (family == 4) {
  62        return "i486";
  63    }
  64    if (family == 5) {
  65        return "i586";
  66    }
  67    return "i686";
  68#else
  69    /* default is #define-d in each arch/ subdir */
  70    return UNAME_MACHINE;
  71#endif
  72}
  73