华恒ARM9教学实验课程设计之附录

ARM9LinuxPOSIXPOSIXPOSIXIEEE10032003GNUGPLLinuxRedHatLinuxRPMMandrakeSlackwareDebianGNU/LinuxGNULinuxGNULinuxJLinuxXWindowsGraphicTextGraphicXWINDOWSXwindowsCtrl+Alt+Fnx(x126)RedHatrootShell[root@localhostroot]#––mkdirrmdirrm–rffr––‘’——————————————————””””””–…––––”””“””””””””üüüüüüüüütagVimtagtagctagstagsVimctags–R*tags-ftagsctagsctagsmanctagstagsvimtags:settags=/your.tagstagsVimCtrl+]Ctrl+T1WINDOWSPCtelnet/ftpREDHATLINUXPCREDHATLINUXPCTELNETSERVERFTPSERVERTTYsetup[~]#setupSystemservicestelnetvsftpd[~]#servicexinetdrestartreboot””GUIAPIWIN32APIWindowsLinuxguishortinitgraph(void),voidclosegraph(void)voidclearscreen(void)voidsetpixel(shortx,shorty,shortcolor)x,yshortgetpixel(shortx,shorty)x,yvoidsetmode(CopyModemode)modeMODE_SRCCOPYMODE_NOT_SRCMODE_SRC_OR_DSTMODE_SRC_AND_DSTMODE_SRC_XOR_DSTMODE_SRC_OR_NOT_DSTMODE_SRC_AND_NOT_DSTMODE_SRC_XOR_NOT_DSTMODE_NOT_SRC_OR_DSTMODE_NOT_SRC_AND_DSTMODE_NOT_SRC_XOR_DSTMODE_NOT_SRC_OR_NOT_DSTMODE_NOT_SRC_AND_NOT_DSTMODE_NOT_SRC_XOR_NOT_DSTCopyModegetmode(void);voidsetcolor(shortcolor)UINTgetcolor(void)voidsetfillpattern(PatternIndexindex)PatternIndexgetfillpattern(void)voidbar(shortx1,shorty1,shortx2,shorty2)x1,y1,x2,y2voidellipse(shortx1,shorty1,shortx2,shorty2)x1,y1,x2,y2voidline(shortx1,shorty1,shortx2,shorty2)x1,y1x2,y2voidlineto(shortx,shorty)x,yvoidmoveto(shortx,shorty)x,yvoidrectangle(shortx1,shorty1,shortx2,shorty2)x1,y1,x2,y2voidtextout(shortx,shorty,unsignedchar*s)x,ysvoidbitblt(shortsrc_x,shortsrc_y,shortw,shorth,shortdest_x,shortdest_y,unsignedchar*src,shortsrc_units_per_line,unsignedchar*dest,shortdest_units_per_line)(src_x,src_y),w,h(dest_x,dest_y)srcsrc_units_per_linedestdest_units_per_linevoidShowBMP(char*filename,shortx,shorty)xyvoiddraw_bmp(shortsx,shortsy,shortrwidth,shortheight,char*pixel)sx,syrwidthpixelShowBMPvoidV_scroll_screen(shortheight)heightheight0height0voidH_scroll_screen(shortheight)heightheight0height0/HHARM9-EDU/kernel/arch/arm/boot/compressed/head.Sld/HHARM9-EDU/kernel/arch/arm/boot/compressed/vmlinux.ldsvimvmlinux.ldsOUTPUT_ARCH(arm)ENTRY(_start)SECTIONS{.=0x30008000;/*head.S*/_load_addr=.;.=0;_text=.;.text:{_start=.;*(.start).start……head.S.section.start,#alloc,#execinstr/**sortoutdifferentcallingconventions*/.alignstart:.typestart,#function.rept8movr0,[e-mail]@absoluteload/runzImageaddress.word_edata@zImageendaddress1:movr7,r1@savearchitectureIDmovr8,#0@saver0teqppc,#0x0c000003@turnoffinterrupts/**Notethatsomecacheflushingandotherstuffmay*beneededhere-isthereanAngelSWIcallforthis?*//**somearchitecturespecificcodecanbeinserted*bythelinkerhere,butitshouldpreserver7andr8.*/.textadrr0,LC0ldmiar0,{r1,r2,r3,r4,r5,r6,ip,sp}subsr0,r0,r1@calculatethedeltaoffsetteqr0,#0@ifdeltaiszero,we'rebeqnot_relocated@runningattheaddresswe@werelinkedat./**We'rerunningatadifferentaddress.Weneedtofix*upvariouspointers:*r5-zImagebaseaddress*r6-GOTstart*ip-GOTend*/addr5,r5,r0addr6,r6,r0addip,ip,r0/**Ifwe'rerunningfullyPIC===CONFIG_ZBOOT_ROM=n,*weneedtofixuppointersintotheBSSregion.*r2-BSSstart*r3-BSSend*sp-stackpointer*/addr2,r2,r0addr3,r3,r0addsp,sp,r0/**RelocateallentriesintheGOTtable.*/1:ldrr1,[r6,#0]addr1,r1,r0strr1,[r6],#4cmpr6,ipblo1bnot_relocated:movr0,#01:strr0,[r2],#4@clearbssstrr0,[r2],#4strr0,[r2],#4strr0,[r2],#4cmpr2,r3blo1b/**TheCruntimeenvironmentshouldnowbesetup*sufficiently.Turnthecacheon,setupsome*pointers,andstartdecompressing.*/blcache_onmovr1,sp@mallocspaceabovestackaddr2,sp,#0x10000@64kmax/**Checktoseeifwewilloverwriteourselves.*r4=finalkerneladdress*r5=startofthisimage*r2=endofmallocspace(andthereforethisimage)*Webasicallywant:*r4=r2-OK*r4+imagelength=r5-OK*/cmpr4,r2bhswont_overwriteaddr0,r4,#4096*1024@4MBlargestkernelsizecmpr0,r5blswont_overwritemovr5,r2@decompressaftermallocspacemovr0,r5movr3,r7bldecompress_kerneladdr0,r0,#127bicr0,r0,#127@alignthekernellength/**r0=decompressedkernellength*r1-r3=unused*r4=kernelexecutionaddress*r5=decompressedkernelstart*r6=processorID*r7=architectureID*r8-r14=unused*/addr1,r5,r0@endofdecompressedkerneladrr2,reloc_startldrr3,LC1addr3,r2,r31:ldmiar2!,{r8-r13}@copyrelocationcodestmiar1!,{r8-r13}ldmiar2!,{r8-r13}stmiar1!,{r8-r13}cmpr2,r3blo1bblcache_clean_flushaddpc,r5,r0@callrelocationcode/**We'renotindangerofoverwritingourselves.Dothisthesimpleway.**r4=kernelexecutionaddress*r7=architectureID*/wont_overwrite:movr0,r4movr3,r7bldecompress_kernelbcall_kernel.typeLC0,#objectLC0:[e-mail][e-mail][e-mail][e-mail][e-mail][e-mail][e-mail]_stack+4096@spLC1:.wordreloc_end-reloc_start.sizeLC0,.-LC0/**Turnonthecache.Weneedtosetupsomepagetablessothatwe*canhaveboththeIandDcacheson.**Weplacethepagetables16kdownfromthekernelexecutionaddress,*andwehopethatnothingelseisusingit.Ifwe'reusingit,we*willgopop!**Onentry,*r4=kernelexecutionaddress*r6=processorID*r7=architecturenumber*r8=run-timeaddressofstart*Onexit,*r1,r2,r3,r8,r9,r12corrupted*Thisroutinemustpreserve:*r4,r5,r6,r7*/.align5cache_on:movr3,#8@cache