在SPARC中，jmpl和restore指令的顺序重要吗？

问题描述

我here读到Ionic: Ionic CLI : 6.11.7 (/usr/local/lib/node_modules/@ionic/cli) Ionic Framework : @ionic/angular 4.11.10 @angular-devkit/build-angular : 0.803.29 @angular-devkit/schematics : 8.3.29 @angular/cli : 8.3.29 @ionic/angular-toolkit : 2.3.2 Cordova: Cordova CLI : 10.0.0 Cordova Platforms : android 9.0.0 Cordova Plugins : cordova-plugin-ionic-keyboard 2.2.0,cordova-plugin-ionic-webview 4.2.1,(and 14 other plugins) Utility: cordova-res : 0.15.1 native-run : 1.0.0 System: ios-deploy : 1.11.1 ios-sim : 8.0.2 NodeJS : v12.16.1 (/usr/local/bin/node) npm : 6.14.8 OS : macOS Catalina Xcode : Xcode 11.7 Build version 11E801a 指令必须之后 { "name": "store-app","version": "0.0.1","author": "Ionic Framework","homepage": "https://ionicframework.com/","scripts": { "ng": "ng","start": "ng serve","build": "ng build","test": "ng test","lint": "ng lint --typeCheck","e2e": "ng e2e","clean-project": "rm -rf www && rm -rf platforms && rm -rf node_modules && rm -rf plugins" },"private": true,"dependencies": { "@agm/core": "~1.0.0","@angular/common": "^8.2.14","@angular/core": "^8.2.14","@angular/forms": "^8.2.14","@angular/platform-browser": "^8.2.14","@angular/platform-browser-dynamic": "^8.2.14","@angular/router": "^8.2.14","@ionic-native/android-permissions": "^5.27.0","@ionic-native/background-mode": "^5.26.0","@ionic-native/core": "^5.0.0","@ionic-native/firebase-analytics": "^5.28.0","@ionic-native/geolocation": "^5.10.0","@ionic-native/header-color": "^5.26.0","@ionic-native/keyboard": "^5.14.0","@ionic-native/location-accuracy": "^5.27.0","@ionic-native/onesignal": "^5.13.0","@ionic-native/splash-screen": "^5.0.0","@ionic-native/status-bar": "^5.0.0","@ionic-native/unique-device-id": "^5.9.0","@ionic/angular": "^4.1.0","@ionic/lab": "^3.1.7","@ngx-translate/core": "^10.0.0","@ngx-translate/http-loader": "^3.0.0","animate.css": "^4.1.0","com.testfairy.cordova-plugin": "^2.25.0","cordova-browser": "6.0.0","cordova-plugin-background-mode": "^0.7.3","cordova-plugin-device": "^2.0.3","cordova-plugin-geolocation": "^4.0.2","cordova-plugin-headercolor": "^1.0.0","cordova-plugin-ionic-keyboard": "^2.2.0","cordova-plugin-ionic-webview": "^4.1.3","cordova-plugin-splashscreen": "^6.0.0","cordova-plugin-statusbar": "^2.4.3","cordova-plugin-uniquedeviceid": "^1.3.2","cordova-plugin-whitelist": "^1.3.4","core-js": "^2.5.4","onesignal-cordova-plugin": "^2.5.2","rxjs": "~6.6.2","zone.js": "~0.9.1" },"devDependencies": { "@angular-devkit/architect": "~0.800.0","@angular-devkit/build-angular": "~0.803.29","@angular-devkit/core": "~8.3.29","@angular-devkit/schematics": "~8.3.29","@angular/cli": "~8.3.29","@angular/compiler": "~8.2.14","@angular/compiler-cli": "~8.2.14","@angular/language-service": "~8.2.14","@ionic/angular-toolkit": "~2.3.2","@types/jasmine": "~2.8.8","@types/jasminewd2": "~2.0.3","@types/node": "~10.14.2","codelyzer": "~5.2.1","cordova-android": "9.0.0","cordova-ios": "^6.1.0","cordova-plugin-advanced-geolocation": "git+https://github.com/esri/cordova-plugin-advanced-geolocation.git","cordova-plugin-android-permissions": "^1.0.2","cordova-plugin-androidx-adapter": "^1.1.1","cordova-plugin-firebase-analytics": "^4.3.1","cordova-plugin-request-location-accuracy": "^2.3.0","cordova-support-android-plugin": "^1.0.2","cordova-support-google-services": "^1.4.1","husky": "~4.2.5","jasmine-core": "~2.99.1","jasmine-spec-reporter": "~4.2.1","karma": "~3.1.4","karma-chrome-launcher": "~2.2.0","karma-coverage-istanbul-reporter": "~2.0.1","karma-jasmine": "~1.1.2","karma-jasmine-html-reporter": "^0.2.2","lint-staged": "^10.2.2","node-sass": "^4.13.1","prettier": "^2.0.5","protractor": "~5.4.0","ts-node": "~8.10.2","tslint": "~5.18.0","tslint-config-prettier": "~1.18.0","tslint-etc": "^1.10.1","typescript": "~3.5.3" },"description": "An Ionic project","cordova": { "plugins": { "cordova-plugin-whitelist": {},"cordova-plugin-statusbar": {},"cordova-plugin-device": {},"cordova-plugin-splashscreen": {},"cordova-plugin-ionic-webview": { "ANDROID_SUPPORT_ANNOTATIONS_VERSION": "27.+" },"cordova-plugin-ionic-keyboard": {},"cordova-plugin-uniquedeviceid": {},"cordova-plugin-geolocation": {},"onesignal-cordova-plugin": {},"cordova-plugin-background-mode": {},"com.testfairy.cordova-plugin": {},"cordova-plugin-advanced-geolocation": {},"cordova-plugin-headercolor": {},"cordova-plugin-android-permissions": {},"cordova-plugin-request-location-accuracy": { "PLAY_SERVICES_LOCATION_VERSION": "16.+" },"cordova-plugin-firebase-analytics": { "FIREBASE_ANALYTICS_COLLECTION_ENABLED": "true" },"cordova-plugin-androidx-adapter": {} },"platforms": [ "android","browser","ios" ] } } 。

SPARC V8手册告诉我，<?xml version='1.0' encoding='utf-8'?> <widget android-versionCode="1" id="com.btd.buggy" version="0.0.1" xmlns="http://www.w3.org/ns/widgets" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:cdv="http://cordova.apache.org/ns/1.0"> <name>Buggy</name> <description>Store App</description> <author email="[e-mail]" href="https://test-app.com/">Buggy</author> <content src="index.html" /> <access origin="*" /> <access origin="about:*" /> <allow-intent href="http://*/*" /> <allow-intent href="https://*/*" /> <allow-intent href="tel:*" /> <allow-intent href="sms:*" /> <allow-intent href="mailto:*" /> <allow-intent href="geo:*" /> <allow-navigation href="*" /> <allow-navigation href="about:*" /> <preference name="ScrollEnabled" value="false" /> <preference name="android-minSdkVersion" value="22" /> <preference name="BackupWebStorage" value="none" /> <preference name="SplashMaintainAspectRatio" value="true" /> <preference name="FadeSplashScreenDuration" value="300" /> <preference name="SplashShowOnlyFirstTime" value="false" /> <preference name="SplashScreen" value="screen" /> <preference name="SplashScreenDelay" value="30000" /> <preference name="ShowSplashScreenSpinner" value="false" /> <preference name="AutoHideSplashScreen" value="false" /> <preference name="Orientation" value="portrait" /> <preference name="AndroidXEnabled" value="true" /> <preference name="GradlePluginGoogleServicesEnabled" value="true" /> <preference name="GradlePluginGoogleServicesversion" value="4.2.0" /> <engine name="android" spec="9.0.0" /> <platform name="android"> <edit-config file="app/src/main/AndroidManifest.xml" mode="merge" target="/manifest/application" xmlns:android="http://schemas.android.com/apk/res/android"> <application android:usesCleartextTraffic="true" /> </edit-config> <resource-file src="google-services.json" target="app/google-services.json" /> <allow-intent href="market:*" /> <preference name="android-targetSdkVersion" value="28" /> <icon density="ldpi" src="resources/android/icon/drawable-ldpi-icon.png" /> <icon density="mdpi" src="resources/android/icon/drawable-mdpi-icon.png" /> <icon density="hdpi" src="resources/android/icon/drawable-hdpi-icon.png" /> <icon density="xhdpi" src="resources/android/icon/drawable-xhdpi-icon.png" /> <icon density="xxhdpi" src="resources/android/icon/drawable-xxhdpi-icon.png" /> <icon density="xxxhdpi" src="resources/android/icon/drawable-xxxhdpi-icon.png" /> <splash density="land-ldpi" src="resources/android/splash/drawable-land-ldpi-screen.png" /> <splash density="land-mdpi" src="resources/android/splash/drawable-land-mdpi-screen.png" /> <splash density="land-hdpi" src="resources/android/splash/drawable-land-hdpi-screen.png" /> <splash density="land-xhdpi" src="resources/android/splash/drawable-land-xhdpi-screen.png" /> <splash density="land-xxhdpi" src="resources/android/splash/drawable-land-xxhdpi-screen.png" /> <splash density="land-xxxhdpi" src="resources/android/splash/drawable-land-xxxhdpi-screen.png" /> <splash density="port-ldpi" src="resources/android/splash/drawable-port-ldpi-screen.png" /> <splash density="port-mdpi" src="resources/android/splash/drawable-port-mdpi-screen.png" /> <splash density="port-hdpi" src="resources/android/splash/drawable-port-hdpi-screen.png" /> <splash density="port-xhdpi" src="resources/android/splash/drawable-port-xhdpi-screen.png" /> <splash density="port-xxhdpi" src="resources/android/splash/drawable-port-xxhdpi-screen.png" /> <splash density="port-xxxhdpi" src="resources/android/splash/drawable-port-xxxhdpi-screen.png" /> <resource-file src="resources/android/notification/drawable-mdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-mdpi/ic_stat_onesignal_default.png" /> <resource-file src="resources/android/notification/drawable-hdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-hdpi/ic_stat_onesignal_default.png" /> <resource-file src="resources/android/notification/drawable-xhdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-xhdpi/ic_stat_onesignal_default.png" /> <resource-file src="resources/android/notification/drawable-xxhdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-xxhdpi/ic_stat_onesignal_default.png" /> <resource-file src="resources/android/notification/drawable-xxxhdpi/ic_stat_onesignal_default.png" target="app/src/main/res/drawable-xxxhdpi/ic_stat_onesignal_default.png" /> </platform> <platform name="ios"> <resource-file src="GoogleService-Info.plist" target="app/GoogleService-Info.plist" /> <allow-intent href="itms:*" /> <allow-intent href="itms-apps:*" /> <icon height="57" src="resources/ios/icon/icon.png" width="57" /> <icon height="114" src="resources/ios/icon/[e-mail]" width="114" /> <icon height="40" src="resources/ios/icon/icon-40.png" width="40" /> <icon height="80" src="resources/ios/icon/[e-mail]" width="80" /> <icon height="120" src="resources/ios/icon/[e-mail]" width="120" /> <icon height="50" src="resources/ios/icon/icon-50.png" width="50" /> <icon height="100" src="resources/ios/icon/[e-mail]" width="100" /> <icon height="60" src="resources/ios/icon/icon-60.png" width="60" /> <icon height="120" src="resources/ios/icon/[e-mail]" width="120" /> <icon height="180" src="resources/ios/icon/[e-mail]" width="180" /> <icon height="72" src="resources/ios/icon/icon-72.png" width="72" /> <icon height="144" src="resources/ios/icon/[e-mail]" width="144" /> <icon height="76" src="resources/ios/icon/icon-76.png" width="76" /> <icon height="152" src="resources/ios/icon/[e-mail]" width="152" /> <icon height="167" src="resources/ios/icon/[e-mail]" width="167" /> <icon height="29" src="resources/ios/icon/icon-small.png" width="29" /> <icon height="58" src="resources/ios/icon/[e-mail]" width="58" /> <icon height="87" src="resources/ios/icon/[e-mail]" width="87" /> <icon height="1024" src="resources/ios/icon/icon-1024.png" width="1024" /> <splash height="1136" src="resources/ios/splash/Default-568h@2x~iphone.png" width="640" /> <splash height="1334" src="resources/ios/splash/Default-667h.png" width="750" /> <splash height="2208" src="resources/ios/splash/Default-736h.png" width="1242" /> <splash height="1242" src="resources/ios/splash/Default-Landscape-736h.png" width="2208" /> <splash height="1536" src="resources/ios/splash/Default-Landscape@2x~ipad.png" width="2048" /> <splash height="2048" src="resources/ios/splash/Default-Landscape@~ipadpro.png" width="2732" /> <splash height="768" src="resources/ios/splash/Default-Landscape~ipad.png" width="1024" /> <splash height="2048" src="resources/ios/splash/Default-Portrait@2x~ipad.png" width="1536" /> <splash height="2732" src="resources/ios/splash/Default-Portrait@~ipadpro.png" width="2048" /> <splash height="1024" src="resources/ios/splash/Default-Portrait~ipad.png" width="768" /> <splash height="960" src="resources/ios/splash/Default@2x~iphone.png" width="640" /> <splash height="480" src="resources/ios/splash/Default~iphone.png" width="320" /> <splash height="2732" src="resources/ios/splash/Default@2x~universal~anyany.png" width="2732" /> <icon height="20" src="resources/ios/icon/icon-20.png" width="20" /> <icon height="40" src="resources/ios/icon/[e-mail]" width="40" /> <icon height="60" src="resources/ios/icon/[e-mail]" width="60" /> <icon height="29" src="resources/ios/icon/icon-29.png" width="29" /> <icon height="58" src="resources/ios/icon/[e-mail]" width="58" /> <icon height="87" src="resources/ios/icon/[e-mail]" width="87" /> <icon height="48" src="resources/ios/icon/[e-mail]" width="48" /> <icon height="55" src="resources/ios/icon/[e-mail]" width="55" /> <icon height="88" src="resources/ios/icon/[e-mail]" width="88" /> <icon height="172" src="resources/ios/icon/[e-mail]" width="172" /> <icon height="196" src="resources/ios/icon/[e-mail]" width="196" /> <icon height="216" src="resources/ios/icon/[e-mail]" width="216" /> <splash height="2688" src="resources/ios/splash/Default-2688h~iphone.png" width="1242" /> <splash height="1792" src="resources/ios/splash/Default-1792h~iphone.png" width="828" /> <splash height="2436" src="resources/ios/splash/Default-2436h.png" width="1125" /> </platform> <platform name="ios"> <config-file parent="NSLocationAlwaysUsageDescription" platform="ios" target="*-Info.plist"> <string>Buggy necesita acceder a tu ubicación para poder brindarte un mejor servicio.</string> </config-file> <config-file parent="NSLocationWhenInUseUsageDescription" platform="ios" target="*-Info.plist"> <string>Buggy necesita acceder a tu ubicación para poder brindarte un mejor servicio.</string> </config-file> </platform> <plugin name="cordova-plugin-whitelist" spec="1.3.3" /> <plugin name="cordova-plugin-statusbar" spec="2.4.2" /> <plugin name="cordova-plugin-device" spec="2.0.2" /> <plugin name="cordova-plugin-splashscreen" spec="5.0.2" /> <plugin name="cordova-plugin-ionic-webview" spec="^4.0.0" /> <plugin name="cordova-plugin-ionic-keyboard" spec="^2.0.5" /> <plugin name="cordova-plugin-advanced-geolocation" spec="https://github.com/esri/cordova-plugin-advanced-geolocation.git" /> <plugin name="cordova-plugin-uniquedeviceid" spec="1.3.2" /> <plugin name="onesignal-cordova-plugin" spec="2.5.2" /> </widget> 指令必须总是 @NgModule({ imports: [ RouterModule.forRoot(routes,{ preloadingStrategy: PreloadAllModules,}),],exports: [RouterModule],}) export class AppRoutingModule {} 指令之前。

但是，我无法找到jmpl和nop指令之间的关系。我目前正在研究SPARC V8体系结构，遇到的一个ELF文件在rett之后有一个jmpl，而我期望是jmpl。我不知道这是正确的还是ELF（以及扩展的SPARC代码）是错误的。

在restore之后，restore正确了吗？

解决方法

我在这里阅读到jmpl之后必须跟随nop指令。

...以及您链接的页面告诉您原因：

因此，当您在SPARC中编程时，请在每条call和jmpl指令之后加上一条nop指令避免不必要地执行额外的指令 ...

这意味着：nop不是CPU的要求，但这是网页作者的建议，程序员可以避免错误。

在the same course的另一页上，作者解释说，专业的程序员（或C编译器）将使用以下顺序从函数中返回：

jmpl %i7+8,%g0
restore

这意味着不仅允许在restore指令的延迟时隙中使用jmpl，而且甚至是从函数返回的正常顺序。

,

您不需要nop。请注意，jumpl之后的指令将被执行，因为它在管道中仍然存在。因此，jmpl后跟rett执行jumpl的{​​{1}} 和。大概这是一个中断服务程序或类似的程序？