simplify the end of entry.S
simplify the end of entry.S

descent/xv6,ManaPoustizadeh/OS-finalProject,roygoldman/xv6-sem,rafamanzo/ep2-so-xv6,shining-yang/xv6,AskDrCatcher/xv6,Mifnight/xv6-public,rafamanzo/ep4-so,Cealestus/cmpt332Assignment1,MrHohn/CS-OperatingSystem-hw3,shadowfax-ring/mit-xv6,seckcoder/mirror-xv6,louisje/xv6,bowlofstew/xv6-public,pablogventura/xv6-public,rajma996/xv6,juroland/xv6,t3rm1n4l/xv6,ihciah/xv6,bngabonziza/xv6-public,run/xv6,chnpmy/xv6,lorenzo-stoakes/haxv6,orenherman/xv6-clone,roygoldman/xv6-sem,expertsnipo/xv6,shining-yang/xv6,Cealestus/cmpt332Assignment1,seckcoder/mirror-xv6,emaadmanzoor/xv6,film42/xv6,SanchayanMaity/xv6-cs450,johnson-li/xv6-homework,wangxiayang/xv6,wasabiz/xv6,raman162/CS450,lord021/Assignment2,t3rm1n4l/xv6,liorderei/OS_Class,5kg/xv6,raman162/CS450,vicionator/XV6,tehgeekmeister/xv6,lord021/Assignment2,svdamani/xv6,bohaoist/xv6,supdizh/clean_xv6,nwf/xv6-public,AZQ1994/xv6,ihciah/XV6-OS,danluu/Xv6,arajago6/Axv6_One,laisborin/RT-xv6,arturosevilla/xv6-turi,GautamV/xv6,pekopeko1/xv6,run/xv6,msyksphinz/xv6-mips,kingsizeme/xv6,logangorence/xv6-public,kazunobu-fujii/xv6,oskarth/xv6,preshshah/xv6,Mifnight/xv6-public,GautamV/xv6,penguiner/xv6,sometimesfood/xv6,siddharthv/xv6,davidbalbert/xv6,arcbbb/xv6,OrangeTide/xv6-public,emaadmanzoor/xv6,pablogventura/xv6-public,OrangeTide/xv6-public,gw/xv6,sometimesfood/xv6,justodiaz/xv6,film42/xv6,AndreiRO/xv6,codelabs-ch/xv6-muen,SarthakCodes/xv6,fintler/xv6,ShakhMoves/Shakh6,reutz19/xv6_ass4,shadowfax-ring/mit-xv6,bowlofstew/xv6-public,lishuwnc/Xv6,wkatsak/xv6,meilank/CS416-hw2,nwf/xv6-public,bngabonziza/xv6,kingsizeme/xv6,Cealestus/cmpt332Assignment1,wenhuizhang/xv6-public,MrHohn/cs518hw2,johnson-li/xv6-homework,kongming92/6828-xv6,BMJHayward/xv6-public,junxu/xv6,RicardoParizotto/xv6---stride-scheduling,CKost/Authorization,MrHohn/CS-OperatingSystem-hw2,tenstep/xv6,jsommers/xv6-public,guilleiguaran/xv6,davidbalbert/xv6,yum185/assign1_partA,kazunobu-fujii/xv6,Cheukyin/xv6,ShakhMoves/Shakh6,bngabonziza/xv6-public,chrisdew/xv6,louisje/xv6,jsommers/xv6-public,Laaia/RT-xv6,sometimesfood/xv6-public,niral28/hw1,Cheukyin/xv6,dswann5/os_assignment_3,nrahimi/xv6,CKost/Authorization,DuskDragon/xv6,gmy987/xv6,ThomasDq/xv6OS,varunk08/xv6,chnpmy/xv6,voytovichs/xv6-public,lord021/Assignment1,SajadAzami/xv6-pm,run/xv6,xv6-jp/xv6,msyksphinz/xv6-mips,PINK-FL0YD/xv6-public,maxymania/open-xv6,CKost/Authorization,xv6-jp/xv6,louisje/xv6,firstblade/xv6,aquamme/xv6,shtyd/xv6-lua,gw/xv6,sigma-random/xv6,Y-liulian/xv6-public,gnosis23/xv6,Raysmond/xv6,AZQ1994/xv6,shyandsy/xv6,xujunhai1991/xv6,sometimesfood/xv6,TheMatrixShibe/tmsv6,yubai/ksm_xv6,Y-liulian/xv6-public,GautamV/xv6,BMJHayward/xv6-public,reutz19/xv6_ass4,bohaoist/xv6,pablogventura/xv6-public,junxu/xv6,lord021/Assignment2,rafamanzo/ep2-so-xv6,HawxChen/Offical-Version-xv6,liorderei/OS_Class,myl2821/xv6-fork,jeffallen/xv6,cpehle/xv6,techno/xv6-mist32,bngabonziza/xv6,eewayhsu/xv6,orenherman/xv6-clone,supr/Xv6,gmy987/xv6,MrHohn/cs518hw3,walafc0/xv6,romanzhg/xv6,supdizh/clean_xv6,roygoldman/xv6-fsprot,nomadium/xv6,yubai/ksm_xv6,juroland/xv6,Raysmond/xv6,gnudeep/xv6,jmatth/xv6,johnson-li/xv6-homework,danluu/Xv6,rajma996/xv6,ahorn/xv6,ThomasDq/xv6OS,rafamanzo/ep2-so-xv6,meilank/CS416-hw1,s-rah/xv6-permissions,ManaPoustizadeh/OS-finalProject,nrahimi/xv6,pekopeko1/xv6,robertpd/xv6,Y-liulian/xv6-public,CKost/Authorization,danrods/xv6Hacks,shyandsy/xv6,danluu/Xv6,avana002/xv6,ckkashyap/xv6,forwchen/xv6,robertpd/xv6,xujunhai1991/xv6,liyinhgqw/xv6,nwf/xv6-public,oskarth/xv6,xujunhai1991/xv6,guilleiguaran/xv6,Royvaknin29/OS_Ass1,jmatth/xv6,phf/xv6-public,shadowfax-ring/mit-xv6,wenhuizhang/xv6-public,gnudeep/xv6,raman162/CS450,oskarth/xv6,penguiner/xv6,penguiner/xv6,SanchayanMaity/xv6-cs450,varunk08/xv6,TheMatrixShibe/tmsv6,KushOza/hw2,bngabonziza/xv6-1,firstblade/xv6,ManaPoustizadeh/OS-finalProject,kingsizeme/xv6,meilank/CS416-hw1,dswann5/os_assignment_3,arturosevilla/xv6-turi,roygoldman/xv6-sem,SajadAzami/xv6-pm,roygoldman/xv6-fsprot,nullpo-head/xv6-mips,sometimesfood/xv6,supr/Xv6,i/xv6,techno/xv6-mist32,tinti/xv6-ubuntu,expertsnipo/xv6,tehgeekmeister/xv6,gw/xv6,preshshah/xv6,arturosevilla/xv6-turi,romanzhg/xv6,wkatsak/xv6,sometimesfood/xv6-public,bngabonziza/xv6-1,wkatsak/xv6,AZQ1994/xv6,lolosssss/Xv6,MrHohn/CS-OperatingSystem-hw2,MrHohn/cs518hw3,sigma-random/xv6,codelabs-ch/xv6-muen,ShakhMoves/Shakh6,garzon/xv6,TheDude05/xv6,nullpo-head/xv6-mips,yubai/ksm_xv6,raman162/CS450,svdamani/xv6,emaadmanzoor/xv6,5kg/xv6,s-rah/xv6-permissions,vicionator/XV6,sometimesfood/xv6-public,sigma-random/xv6,chrisdew/xv6,jmatth/xv6,ckkashyap/xv6,leenjewel/xv6_learn,MatanGilead/myxv6,guilleiguaran/xv6,CHRISTOPHERDIEHL/xv6,siddharthv/xv6,Laaia/RT-xv6,tenstep/xv6,bngabonziza/xv6,kazunobu-fujii/xv6,ckkashyap/xv6,SarthakCodes/xv6,arcbbb/xv6,TheMatrixShibe/tmsv6,tehgeekmeister/xv6,MrHohn/cs518hw2,danluu/Xv6,preshshah/xv6,johnson-li/xv6-homework,garzon/xv6-public,howerj/xv6,ManaPoustizadeh/OS-finalProject,WeiranFang/cs518hw3,lord021/Assignment2,chyka-dev/xv6-public,arajago6/Axv6_One,khalily/xv6,v1ta/xv6,humphreyja/Xv6,voytovichs/xv6-public,bohaoist/xv6,bngabonziza/xv6-public,imagine4077/xv6-public,romanzhg/xv6,gnudeep/xv6,junxu/xv6,orenherman/xv6-clone,WeiranFang/cs518hw3,gco/xv6,DuskDragon/xv6,galbenor/os162-4,gburd/xv6,nwolovick/xv6-public,gco/xv6,eewayhsu/xv6,pablogventura/xv6-public,Royvaknin29/OS_Ass1,firstblade/xv6,rlok3000/xv6,lorenzo-stoakes/haxv6,Royvaknin29/OS_Ass1,SarthakCodes/xv6,sigma-random/xv6,lishuwnc/Xv6,lenw/xv6-public,roygoldman/xv6-fsprot,i/xv6,ZheyuJin/xv6_reading,Cheukyin/xv6,RicardoParizotto/xv6---stride-scheduling,meilank/CS416-hw1,HawxChen/Offical-Version-xv6,v1ta/xv6,juroland/xv6,walafc0/xv6,alex0906093/xv6,leenjewel/xv6_learn,KushOza/hw2,bngabonziza/xv6-public,jsommers/xv6-public,UIKit0/Xv6,kongming92/6828-xv6,phf/xv6-public,tamlok/xv6,rlok3000/xv6,pelhamnicholas/xv6,tamlok/xv6,PINK-FL0YD/xv6-public,pekopeko1/xv6-code,humphreyja/Xv6,yubai/ksm_xv6,UIKit0/xv6-1,UIKit0/Xv6,humphreyja/Xv6,gburd/xv6,tlerea1/xv6,kongming92/6828-xv6,shadowfax-ring/mit-xv6,DuskDragon/xv6,prashantkhurana/OS,sdimitro/xv6,prashantkhurana/OS,nomadium/xv6,jsommers/xv6-public,SanchayanMaity/xv6-cs450,chyka-dev/xv6-public,oskarth/xv6,laisborin/RT-xv6,nwolovick/xv6-public,pelhamnicholas/xv6,fintler/xv6,UIKit0/xv6-1,MrHohn/CS-OperatingSystem-hw3,supdizh/clean_xv6,shtyd/xv6-lua,meilank/CS416-hw2,liadgi/os163,arajago6/Axv6_One,varunk08/xv6,shining-yang/xv6,i/xv6,HugoTian/xv6,t3rm1n4l/xv6,humphreyja/Xv6,DuskDragon/xv6,williamsandrew/xv6,garzon/xv6,xv6-jp/xv6,chnpmy/xv6,CHRISTOPHERDIEHL/xv6,tehgeekmeister/xv6,nwolovick/xv6-public,wkatsak/xv6,jgome043/tearos,reutz19/xv6_ass4,Mifnight/xv6-public,aquamme/xv6,PINK-FL0YD/xv6-public,ShakhMoves/Shakh6,MrHohn/cs518hw2,louisje/xv6,logangorence/xv6-public,tlerea1/xv6,tamlok/xv6,vicionator/XV6,garzon/xv6-public,davidbalbert/xv6,khalily/xv6,ZheyuJin/xv6_reading,meilank/CS416-hw2,forwchen/xv6,AndreiRO/xv6,junxu/xv6,ahorn/xv6,konyavic/xv6,chyka-dev/xv6-public,pelhamnicholas/xv6,bngabonziza/xv6-1,Royvaknin29/OS_Ass1,MrHohn/CS-OperatingSystem-hw3,shtyd/xv6-lua,howerj/xv6,nullpo-head/xv6-mips,jgome043/tearos,UIKit0/Xv6,prashantkhurana/OS,KushOza/hw2,TheDude05/xv6,tinti/xv6-ubuntu,TheDude05/xv6,gburd/xv6,supr/Xv6,AndreiRO/xv6,voytovichs/xv6-public,svdamani/xv6,MatanGilead/myxv6,siddharthv/xv6,maxymania/open-xv6,BMJHayward/xv6-public,gnudeep/xv6,film42/xv6,liadgi/os163,chnpmy/xv6,jeffallen/xv6,walafc0/xv6,niral28/hw1,shyandsy/xv6,garzon/xv6-public,bngabonziza/xv6,lenw/xv6-public,AZQ1994/xv6,romanzhg/xv6,avana002/xv6,nwf/xv6-public,bowlofstew/xv6-public,pekopeko1/xv6-code,codelabs-ch/xv6-muen,kazunobu-fujii/xv6,sometimesfood/xv6-public,phf/xv6-public,run/xv6,WeiranFang/cs518hw3,supdizh/clean_xv6,ahorn/xv6,nomadium/xv6,ihciah/xv6,gw/xv6,gzpan123/xv6,OrangeTide/xv6-public,sdimitro/xv6,roygoldman/xv6-fsprot,gzpan123/xv6,varunk08/xv6,pekopeko1/xv6-code,MrHohn/CS-OperatingSystem-hw3,wenhuizhang/xv6-public,ThomasDq/xv6OS,gmy987/xv6,ahorn/xv6,danrods/xv6Hacks,v1ta/xv6,ThomasDq/xv6OS,seckcoder/mirror-xv6,panks/Xv6,Laaia/RT-xv6,sdharan/xv6-rcu,ckkashyap/xv6,orenherman/xv6-clone,lord021/Assignment1,HugoTian/xv6,danrods/xv6Hacks,s-rah/xv6-permissions,tamlok/xv6,panks/Xv6,TheMatrixShibe/tmsv6,shtyd/xv6-lua,eewayhsu/xv6,jmatth/xv6,baboofei/v6rt,arianvp/xv6,sdimitro/xv6,eewayhsu/xv6,msyksphinz/xv6-mips,logangorence/xv6-public,bowlofstew/xv6-public,nrahimi/xv6,rlok3000/xv6,nullpo-head/xv6-mips,RicardoParizotto/xv6---stride-scheduling,williamsandrew/xv6,avana002/xv6,pekopeko1/xv6,descent/xv6,rajma996/xv6,aquamme/xv6,jgome043/tearos,techno/xv6-mist32,UIKit0/Xv6,arianvp/xv6,laisborin/RT-xv6,lishuwnc/Xv6,panks/Xv6,roygoldman/xv6-sem,cpehle/xv6,gmy987/xv6,alex0906093/xv6,fintler/xv6,rajma996/xv6,justodiaz/xv6,pelhamnicholas/xv6,svdamani/xv6,firstblade/xv6,williamsandrew/xv6,Cheukyin/xv6,bohaoist/xv6,khalily/xv6,KushOza/hw2,shyandsy/xv6,MrHohn/cs518hw3,davidbalbert/xv6,OrangeTide/xv6-public,bngabonziza/xv6-1,CHRISTOPHERDIEHL/xv6,howerj/xv6,konyavic/xv6,aquamme/xv6,walafc0/xv6,prashantkhurana/OS,gnosis23/xv6,leenjewel/xv6_learn,ihciah/XV6-OS,imagine4077/xv6-public,WeiranFang/cs518hw3,Laaia/RT-xv6,lolosssss/Xv6,sdimitro/xv6,MrHohn/CS-OperatingSystem-hw2,MatanGilead/myxv6,MrHohn/cs518hw3,gco/xv6,meilank/CS416-hw1,alex0906093/xv6,HugoTian/xv6,laisborin/RT-xv6,niral28/hw1,gzpan123/xv6,danrods/xv6Hacks,AndreiRO/xv6,SajadAzami/xv6-pm,galbenor/os162-4,myl2821/xv6-fork,descent/xv6,dswann5/os_assignment_3,msyksphinz/xv6-mips,f13mash/xv6,sdharan/xv6-rcu,CKost/Authorization,imagine4077/xv6-public,ZheyuJin/xv6_reading,SarthakCodes/xv6,arianvp/xv6,tlerea1/xv6,AskDrCatcher/xv6,vicionator/XV6,BMJHayward/xv6-public,lishuwnc/Xv6,niral28/hw1,voytovichs/xv6-public,Mifnight/xv6-public,arcbbb/xv6,liyinhgqw/xv6,wenhuizhang/xv6-public,robertpd/xv6,lorenzo-stoakes/haxv6,rlok3000/xv6,5kg/xv6,AskDrCatcher/xv6,UIKit0/xv6-1,liorderei/OS_Class,chrisdew/xv6,nwolovick/xv6-public,chrisdew/xv6,s-rah/xv6-permissions,lenw/xv6-public,Y-liulian/xv6-public,MrHohn/CS-OperatingSystem-hw2,film42/xv6,myl2821/xv6-fork,yum185/assign1_partA,chyka-dev/xv6-public,alex0906093/xv6,codelabs-ch/xv6-muen,wasabiz/xv6,wangxiayang/xv6,howerj/xv6,wangxiayang/xv6,t3rm1n4l/xv6,tinti/xv6-ubuntu,gw/xv6,siddharthv/xv6,arianvp/xv6,imagine4077/xv6-public,justodiaz/xv6,penguiner/xv6,liorderei/OS_Class,GautamV/xv6,v1ta/xv6,AskDrCatcher/xv6,avana002/xv6,phf/xv6-public,i/xv6,arajago6/Axv6_One,galbenor/os162-4,MrHohn/cs518hw2,dswann5/os_assignment_3,f13mash/xv6,rafamanzo/ep4-so,SajadAzami/xv6-pm,gzpan123/xv6,tehgeekmeister/xv6,tlerea1/xv6,lolosssss/Xv6,expertsnipo/xv6,voytovichs/xv6-public,baboofei/v6rt,jeffallen/xv6,f13mash/xv6,wangxiayang/xv6,kongming92/6828-xv6,lenw/xv6-public,techno/xv6-mist32,kingsizeme/xv6,garzon/xv6-public,HugoTian/xv6,liyinhgqw/xv6,justodiaz/xv6,lord021/Assignment1,baboofei/v6rt,descent/xv6,jgome043/tearos,arcbbb/xv6,PINK-FL0YD/xv6-public,nwf/xv6-public,seckcoder/mirror-xv6,khalily/xv6,SanchayanMaity/xv6-cs450,emaadmanzoor/xv6,galbenor/os162-4,baboofei/v6rt,myl2821/xv6-fork,ihciah/XV6-OS,lolosssss/Xv6,guilleiguaran/xv6,meilank/CS416-hw2,ihciah/XV6-OS,lorenzo-stoakes/haxv6,HawxChen/Offical-Version-xv6,MatanGilead/myxv6,shyandsy/xv6,gnosis23/xv6,konyavic/xv6,CHRISTOPHERDIEHL/xv6,pekopeko1/xv6,expertsnipo/xv6,robertpd/xv6,preshshah/xv6,nomadium/xv6,xujunhai1991/xv6,gnosis23/xv6,Cealestus/cmpt332Assignment1,ThomasDq/xv6OS,shining-yang/xv6,reutz19/xv6_ass4,arturosevilla/xv6-turi,yum185/assign1_partA,pekopeko1/xv6-code,sdharan/xv6-rcu,gburd/xv6,leenjewel/xv6_learn,ZheyuJin/xv6_reading,juroland/xv6,rafamanzo/ep4-so,UIKit0/xv6-1,sdharan/xv6-rcu,RicardoParizotto/xv6---stride-scheduling,yum185/assign1_partA,yubai/ksm_xv6,liadgi/os163,5kg/xv6