da79030f47
This patch for linux-user adapts the output of the emulated uname() syscall to match the configured CPU. Tested with x86, x86-64 and arm emulation. Signed-off-by: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Loïc Minier <lool@dooz.org>
73 lines
2.5 KiB
C
73 lines
2.5 KiB
C
/*
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* cpu to uname machine name map
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*
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* Copyright (c) 2009 Loïc Minier
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include "qemu.h"
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//#include "qemu-common.h"
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#include "cpu-uname.h"
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/* return highest utsname machine name for emulated instruction set
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*
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* NB: the default emulated CPU ("any") might not match any existing CPU, e.g.
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* on ARM it has all features turned on, so there is no perfect arch string to
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* return here */
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const char *cpu_to_uname_machine(void *cpu_env)
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{
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#ifdef TARGET_ARM
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/* utsname machine name on linux arm is CPU arch name + endianness, e.g.
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* armv7l; to get a list of CPU arch names from the linux source, use:
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* grep arch_name: -A1 linux/arch/arm/mm/proc-*.S
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* see arch/arm/kernel/setup.c: setup_processor()
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*
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* to test by CPU id, compare cpu_env->cp15.c0_cpuid to ARM_CPUID_*
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* defines and to test by CPU feature, use arm_feature(cpu_env,
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* ARM_FEATURE_*) */
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/* in theory, endianness is configurable on some ARM CPUs, but this isn't
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* used in user mode emulation */
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#ifdef TARGET_WORDS_BIGENDIAN
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#define utsname_suffix "b"
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#else
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#define utsname_suffix "l"
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#endif
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if (arm_feature(cpu_env, ARM_FEATURE_V7))
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return "armv7" utsname_suffix;
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if (arm_feature(cpu_env, ARM_FEATURE_V6))
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return "armv6" utsname_suffix;
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/* earliest emulated CPU is ARMv5TE; qemu can emulate the 1026, but not its
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* Jazelle support */
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return "armv5te" utsname_suffix;
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#elif defined(TARGET_X86_64)
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return "x86-64";
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#elif defined(TARGET_I386)
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/* see arch/x86/kernel/cpu/bugs.c: check_bugs(), 386, 486, 586, 686 */
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uint32_t cpuid_version = ((CPUX86State *)cpu_env)->cpuid_version;
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int family = ((cpuid_version >> 8) & 0x0f) + ((cpuid_version >> 20) & 0xff);
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if (family == 4)
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return "i486";
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if (family == 5)
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return "i586";
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return "i686";
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#else
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/* default is #define-d in each arch/ subdir */
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return UNAME_MACHINE;
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#endif
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}
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