root / linux-user / cpu-uname.c @ 0c1592d9
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1 | da79030f | Loïc Minier | /*
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2 | da79030f | Loïc Minier | * cpu to uname machine name map
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3 | da79030f | Loïc Minier | *
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4 | da79030f | Loïc Minier | * Copyright (c) 2009 Lo?c Minier
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5 | da79030f | Loïc Minier | *
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6 | da79030f | Loïc Minier | * This program is free software; you can redistribute it and/or modify
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7 | da79030f | Loïc Minier | * it under the terms of the GNU General Public License as published by
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8 | da79030f | Loïc Minier | * the Free Software Foundation; either version 2 of the License, or
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9 | da79030f | Loïc Minier | * (at your option) any later version.
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10 | da79030f | Loïc Minier | *
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11 | da79030f | Loïc Minier | * This program is distributed in the hope that it will be useful,
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12 | da79030f | Loïc Minier | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | da79030f | Loïc Minier | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | da79030f | Loïc Minier | * GNU General Public License for more details.
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15 | da79030f | Loïc Minier | *
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16 | da79030f | Loïc Minier | * You should have received a copy of the GNU General Public License
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17 | da79030f | Loïc Minier | * along with this program; if not, see <http://www.gnu.org/licenses/>.
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18 | da79030f | Loïc Minier | */
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19 | da79030f | Loïc Minier | |
20 | da79030f | Loïc Minier | #include <stdio.h> |
21 | da79030f | Loïc Minier | |
22 | da79030f | Loïc Minier | #include "qemu.h" |
23 | da79030f | Loïc Minier | //#include "qemu-common.h"
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24 | da79030f | Loïc Minier | #include "cpu-uname.h" |
25 | da79030f | Loïc Minier | |
26 | da79030f | Loïc Minier | /* return highest utsname machine name for emulated instruction set
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27 | da79030f | Loïc Minier | *
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28 | da79030f | Loïc Minier | * NB: the default emulated CPU ("any") might not match any existing CPU, e.g.
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29 | da79030f | Loïc Minier | * on ARM it has all features turned on, so there is no perfect arch string to
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30 | da79030f | Loïc Minier | * return here */
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31 | da79030f | Loïc Minier | const char *cpu_to_uname_machine(void *cpu_env) |
32 | da79030f | Loïc Minier | { |
33 | da79030f | Loïc Minier | #ifdef TARGET_ARM
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34 | da79030f | Loïc Minier | /* utsname machine name on linux arm is CPU arch name + endianness, e.g.
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35 | da79030f | Loïc Minier | * armv7l; to get a list of CPU arch names from the linux source, use:
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36 | da79030f | Loïc Minier | * grep arch_name: -A1 linux/arch/arm/mm/proc-*.S
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37 | da79030f | Loïc Minier | * see arch/arm/kernel/setup.c: setup_processor()
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38 | da79030f | Loïc Minier | *
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39 | da79030f | Loïc Minier | * to test by CPU id, compare cpu_env->cp15.c0_cpuid to ARM_CPUID_*
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40 | da79030f | Loïc Minier | * defines and to test by CPU feature, use arm_feature(cpu_env,
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41 | da79030f | Loïc Minier | * ARM_FEATURE_*) */
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42 | da79030f | Loïc Minier | |
43 | da79030f | Loïc Minier | /* in theory, endianness is configurable on some ARM CPUs, but this isn't
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44 | da79030f | Loïc Minier | * used in user mode emulation */
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45 | da79030f | Loïc Minier | #ifdef TARGET_WORDS_BIGENDIAN
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46 | da79030f | Loïc Minier | #define utsname_suffix "b" |
47 | da79030f | Loïc Minier | #else
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48 | da79030f | Loïc Minier | #define utsname_suffix "l" |
49 | da79030f | Loïc Minier | #endif
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50 | da79030f | Loïc Minier | if (arm_feature(cpu_env, ARM_FEATURE_V7))
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51 | da79030f | Loïc Minier | return "armv7" utsname_suffix; |
52 | da79030f | Loïc Minier | if (arm_feature(cpu_env, ARM_FEATURE_V6))
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53 | da79030f | Loïc Minier | return "armv6" utsname_suffix; |
54 | da79030f | Loïc Minier | /* earliest emulated CPU is ARMv5TE; qemu can emulate the 1026, but not its
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55 | da79030f | Loïc Minier | * Jazelle support */
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56 | da79030f | Loïc Minier | return "armv5te" utsname_suffix; |
57 | da79030f | Loïc Minier | #elif defined(TARGET_X86_64)
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58 | da79030f | Loïc Minier | return "x86-64"; |
59 | da79030f | Loïc Minier | #elif defined(TARGET_I386)
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60 | da79030f | Loïc Minier | /* see arch/x86/kernel/cpu/bugs.c: check_bugs(), 386, 486, 586, 686 */
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61 | da79030f | Loïc Minier | uint32_t cpuid_version = ((CPUX86State *)cpu_env)->cpuid_version; |
62 | da79030f | Loïc Minier | int family = ((cpuid_version >> 8) & 0x0f) + ((cpuid_version >> 20) & 0xff); |
63 | da79030f | Loïc Minier | if (family == 4) |
64 | da79030f | Loïc Minier | return "i486"; |
65 | da79030f | Loïc Minier | if (family == 5) |
66 | da79030f | Loïc Minier | return "i586"; |
67 | da79030f | Loïc Minier | return "i686"; |
68 | da79030f | Loïc Minier | #else
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69 | da79030f | Loïc Minier | /* default is #define-d in each arch/ subdir */
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70 | da79030f | Loïc Minier | return UNAME_MACHINE;
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71 | da79030f | Loïc Minier | #endif
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72 | da79030f | Loïc Minier | } |