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Annotation of qemu/linux-user/cpu-uname.c, revision 1.1

1.1     ! root        1: /*
        !             2:  *  cpu to uname machine name map
        !             3:  *
        !             4:  *  Copyright (c) 2009 Lo�c 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 */
        !            31: const char *cpu_to_uname_machine(void *cpu_env)
        !            32: {
        !            33: #ifdef TARGET_ARM
        !            34:     /* utsname machine name on linux arm is CPU arch name + endianness, e.g.
        !            35:      * armv7l; to get a list of CPU arch names from the linux source, use:
        !            36:      *     grep arch_name: -A1 linux/arch/arm/mm/proc-*.S
        !            37:      * see arch/arm/kernel/setup.c: setup_processor()
        !            38:      *
        !            39:      * to test by CPU id, compare cpu_env->cp15.c0_cpuid to ARM_CPUID_*
        !            40:      * defines and to test by CPU feature, use arm_feature(cpu_env,
        !            41:      * ARM_FEATURE_*) */
        !            42: 
        !            43:     /* in theory, endianness is configurable on some ARM CPUs, but this isn't
        !            44:      * used in user mode emulation */
        !            45: #ifdef TARGET_WORDS_BIGENDIAN
        !            46: #define utsname_suffix "b"
        !            47: #else
        !            48: #define utsname_suffix "l"
        !            49: #endif
        !            50:     if (arm_feature(cpu_env, ARM_FEATURE_V7))
        !            51:         return "armv7" utsname_suffix;
        !            52:     if (arm_feature(cpu_env, ARM_FEATURE_V6))
        !            53:         return "armv6" utsname_suffix;
        !            54:     /* earliest emulated CPU is ARMv5TE; qemu can emulate the 1026, but not its
        !            55:      * Jazelle support */
        !            56:     return "armv5te" utsname_suffix;
        !            57: #elif defined(TARGET_X86_64)
        !            58:     return "x86-64";
        !            59: #elif defined(TARGET_I386)
        !            60:     /* see arch/x86/kernel/cpu/bugs.c: check_bugs(), 386, 486, 586, 686 */
        !            61:     uint32_t cpuid_version = ((CPUX86State *)cpu_env)->cpuid_version;
        !            62:     int family = ((cpuid_version >> 8) & 0x0f) + ((cpuid_version >> 20) & 0xff);
        !            63:     if (family == 4)
        !            64:         return "i486";
        !            65:     if (family == 5)
        !            66:         return "i586";
        !            67:     return "i686";
        !            68: #else
        !            69:     /* default is #define-d in each arch/ subdir */
        !            70:     return UNAME_MACHINE;
        !            71: #endif
        !            72: }

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