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Annotation of qemu/linux-user/cpu-uname.c, revision 1.1.1.1

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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