301 lines
8.8 KiB
Rust
301 lines
8.8 KiB
Rust
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//! Parses /proc/cpuinfo
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#![cfg_attr(not(target_arch = "arm"), allow(dead_code))]
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extern crate std;
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use self::std::{fs::File, io, io::Read, prelude::v1::*};
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/// cpuinfo
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pub(crate) struct CpuInfo {
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raw: String,
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}
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impl CpuInfo {
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/// Reads /proc/cpuinfo into CpuInfo.
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pub(crate) fn new() -> Result<Self, io::Error> {
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let mut file = File::open("/proc/cpuinfo")?;
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let mut cpui = Self { raw: String::new() };
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file.read_to_string(&mut cpui.raw)?;
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Ok(cpui)
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}
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/// Returns the value of the cpuinfo `field`.
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pub(crate) fn field(&self, field: &str) -> CpuInfoField {
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for l in self.raw.lines() {
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if l.trim().starts_with(field) {
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return CpuInfoField::new(l.split(": ").nth(1));
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}
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}
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CpuInfoField(None)
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}
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/// Returns the `raw` contents of `/proc/cpuinfo`
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#[cfg(test)]
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fn raw(&self) -> &String {
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&self.raw
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}
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#[cfg(test)]
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fn from_str(other: &str) -> Result<Self, ::std::io::Error> {
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Ok(Self {
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raw: String::from(other),
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})
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}
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}
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/// Field of cpuinfo
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#[derive(Debug)]
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pub(crate) struct CpuInfoField<'a>(Option<&'a str>);
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impl<'a> PartialEq<&'a str> for CpuInfoField<'a> {
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fn eq(&self, other: &&'a str) -> bool {
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match self.0 {
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None => other.is_empty(),
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Some(f) => f == other.trim(),
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}
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}
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}
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impl<'a> CpuInfoField<'a> {
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pub(crate) fn new<'b>(v: Option<&'b str>) -> CpuInfoField<'b> {
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match v {
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None => CpuInfoField::<'b>(None),
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Some(f) => CpuInfoField::<'b>(Some(f.trim())),
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}
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}
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/// Does the field exist?
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#[cfg(test)]
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pub(crate) fn exists(&self) -> bool {
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self.0.is_some()
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}
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/// Does the field contain `other`?
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pub(crate) fn has(&self, other: &str) -> bool {
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match self.0 {
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None => other.is_empty(),
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Some(f) => {
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let other = other.trim();
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for v in f.split(' ') {
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if v == other {
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return true;
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}
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}
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false
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}
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn raw_dump() {
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let cpuinfo = CpuInfo::new().unwrap();
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if cpuinfo.field("vendor_id") == "GenuineIntel" {
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assert!(cpuinfo.field("flags").exists());
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assert!(!cpuinfo.field("vendor33_id").exists());
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assert!(cpuinfo.field("flags").has("sse"));
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assert!(!cpuinfo.field("flags").has("avx314"));
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}
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println!("{}", cpuinfo.raw());
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}
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const CORE_DUO_T6500: &str = r"processor : 0
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vendor_id : GenuineIntel
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cpu family : 6
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model : 23
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model name : Intel(R) Core(TM)2 Duo CPU T6500 @ 2.10GHz
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stepping : 10
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microcode : 0xa0b
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cpu MHz : 1600.000
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cache size : 2048 KB
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physical id : 0
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siblings : 2
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core id : 0
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cpu cores : 2
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apicid : 0
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initial apicid : 0
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fdiv_bug : no
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hlt_bug : no
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f00f_bug : no
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coma_bug : no
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fpu : yes
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fpu_exception : yes
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cpuid level : 13
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wp : yes
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flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm
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bogomips : 4190.43
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clflush size : 64
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cache_alignment : 64
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address sizes : 36 bits physical, 48 bits virtual
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power management:
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";
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#[test]
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fn core_duo_t6500() {
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let cpuinfo = CpuInfo::from_str(CORE_DUO_T6500).unwrap();
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assert_eq!(cpuinfo.field("vendor_id"), "GenuineIntel");
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assert_eq!(cpuinfo.field("cpu family"), "6");
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assert_eq!(cpuinfo.field("model"), "23");
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assert_eq!(
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cpuinfo.field("model name"),
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"Intel(R) Core(TM)2 Duo CPU T6500 @ 2.10GHz"
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);
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assert_eq!(
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cpuinfo.field("flags"),
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"fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm"
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);
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assert!(cpuinfo.field("flags").has("fpu"));
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assert!(cpuinfo.field("flags").has("dtherm"));
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assert!(cpuinfo.field("flags").has("sse2"));
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assert!(!cpuinfo.field("flags").has("avx"));
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}
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const ARM_CORTEX_A53: &str = r"Processor : AArch64 Processor rev 3 (aarch64)
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processor : 0
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processor : 1
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processor : 2
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processor : 3
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processor : 4
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processor : 5
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processor : 6
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processor : 7
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Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
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CPU implementer : 0x41
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CPU architecture: AArch64
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CPU variant : 0x0
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CPU part : 0xd03
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CPU revision : 3
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Hardware : HiKey Development Board
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";
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#[test]
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fn arm_cortex_a53() {
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let cpuinfo = CpuInfo::from_str(ARM_CORTEX_A53).unwrap();
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assert_eq!(
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cpuinfo.field("Processor"),
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"AArch64 Processor rev 3 (aarch64)"
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);
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assert_eq!(
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cpuinfo.field("Features"),
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"fp asimd evtstrm aes pmull sha1 sha2 crc32"
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);
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assert!(cpuinfo.field("Features").has("pmull"));
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assert!(!cpuinfo.field("Features").has("neon"));
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assert!(cpuinfo.field("Features").has("asimd"));
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}
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const ARM_CORTEX_A57: &str = r"Processor : Cortex A57 Processor rev 1 (aarch64)
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processor : 0
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processor : 1
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processor : 2
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processor : 3
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Features : fp asimd aes pmull sha1 sha2 crc32 wp half thumb fastmult vfp edsp neon vfpv3 tlsi vfpv4 idiva idivt
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CPU implementer : 0x41
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CPU architecture: 8
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CPU variant : 0x1
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CPU part : 0xd07
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CPU revision : 1";
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#[test]
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fn arm_cortex_a57() {
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let cpuinfo = CpuInfo::from_str(ARM_CORTEX_A57).unwrap();
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assert_eq!(
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cpuinfo.field("Processor"),
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"Cortex A57 Processor rev 1 (aarch64)"
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);
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assert_eq!(
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cpuinfo.field("Features"),
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"fp asimd aes pmull sha1 sha2 crc32 wp half thumb fastmult vfp edsp neon vfpv3 tlsi vfpv4 idiva idivt"
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);
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assert!(cpuinfo.field("Features").has("pmull"));
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assert!(cpuinfo.field("Features").has("neon"));
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assert!(cpuinfo.field("Features").has("asimd"));
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}
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const POWER8E_POWERKVM: &str = r"processor : 0
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cpu : POWER8E (raw), altivec supported
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clock : 3425.000000MHz
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revision : 2.1 (pvr 004b 0201)
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processor : 1
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cpu : POWER8E (raw), altivec supported
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clock : 3425.000000MHz
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revision : 2.1 (pvr 004b 0201)
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processor : 2
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cpu : POWER8E (raw), altivec supported
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clock : 3425.000000MHz
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revision : 2.1 (pvr 004b 0201)
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processor : 3
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cpu : POWER8E (raw), altivec supported
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clock : 3425.000000MHz
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revision : 2.1 (pvr 004b 0201)
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timebase : 512000000
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platform : pSeries
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model : IBM pSeries (emulated by qemu)
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machine : CHRP IBM pSeries (emulated by qemu)";
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#[test]
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fn power8_powerkvm() {
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let cpuinfo = CpuInfo::from_str(POWER8E_POWERKVM).unwrap();
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assert_eq!(cpuinfo.field("cpu"), "POWER8E (raw), altivec supported");
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assert!(cpuinfo.field("cpu").has("altivec"));
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}
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const POWER5P: &str = r"processor : 0
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cpu : POWER5+ (gs)
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clock : 1900.098000MHz
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revision : 2.1 (pvr 003b 0201)
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processor : 1
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cpu : POWER5+ (gs)
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clock : 1900.098000MHz
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revision : 2.1 (pvr 003b 0201)
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processor : 2
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cpu : POWER5+ (gs)
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clock : 1900.098000MHz
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revision : 2.1 (pvr 003b 0201)
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processor : 3
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cpu : POWER5+ (gs)
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clock : 1900.098000MHz
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revision : 2.1 (pvr 003b 0201)
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processor : 4
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cpu : POWER5+ (gs)
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clock : 1900.098000MHz
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revision : 2.1 (pvr 003b 0201)
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processor : 5
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cpu : POWER5+ (gs)
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clock : 1900.098000MHz
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revision : 2.1 (pvr 003b 0201)
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processor : 6
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cpu : POWER5+ (gs)
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clock : 1900.098000MHz
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revision : 2.1 (pvr 003b 0201)
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processor : 7
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cpu : POWER5+ (gs)
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clock : 1900.098000MHz
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revision : 2.1 (pvr 003b 0201)
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timebase : 237331000
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platform : pSeries
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machine : CHRP IBM,9133-55A";
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#[test]
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fn power5p() {
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let cpuinfo = CpuInfo::from_str(POWER5P).unwrap();
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assert_eq!(cpuinfo.field("cpu"), "POWER5+ (gs)");
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assert!(!cpuinfo.field("cpu").has("altivec"));
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}
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}
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