/*
?*?devmem2.c:?Simple?program?to?read/write?from/to?any?location?in?memory.
?*
?*??Copyright?（C）?2000?Jan-Derk?Bakker?（J.D.Bakker@its.tudelft.nl）
?*
?*
?*?This?software?has?been?developed?for?the?LART?computing?board
?*?（http://www.lart.tudelft.nl/）.?The?development?has?been?sponsored?by
?*?the?Mobile?MultiMedia?Communications?（http://www.mmc.tudelft.nl/）
?*?and?Ubiquitous?Communications?（http://www.ubicom.tudelft.nl/）
?*?projects.
?*
?*?The?author?can?be?reached?at:
?*
?*??Jan-Derk?Bakker
?*??Information?and?Communication?Theory?Group
?*??Faculty?of?Information?Technology?and?Systems
?*??Delft?University?of?Technology
?*??P.O.?Box?5031
?*??2600?GA?Delft
?*??The?Netherlands
?*
?*
?*?This?program?is?free?software;?you?can?redistribute?it?and/or?modify
?*?it?under?the?terms?of?the?GNU?General?Public?License?as?published?by
?*?the?Free?Software?Foundation;?either?version?2?of?the?License?or
?*?（at?your?option）?any?later?version.
?*
?*?This?program?is?distributed?in?the?hope?that?it?will?be?useful
?*?but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of
?*?MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the
?*?GNU?General?Public?License?for?more?details.
?*?
?*?You?should?have?received?a?copy?of?the?GNU?General?Public?License
?*?along?with?this?program;?if?not?write?to?the?Free?Software
?*?Foundation?Inc.?59?Temple?Place?Suite?330?Boston?MA??02111-1307??USA
?*
?*/

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
??
#define?FATAL?do?{?fprintf（stderr?“Error?at?line?%d?file?%s?（%d）?[%s]\n“?\
??__LINE__?__FILE__?errno?strerror（errno））;?exit（1）;?}?while（0）
?
#define?MAP_SIZE?4096UL
#define?MAP_MASK?（MAP_SIZE?-?1）

int?main（int?argc?char?**argv）?{
????int?fd;
????void?*map_base?*virt_addr;?
????unsigned?long?read_result?writeval;
????off_t?target;
????int?access_type?=?‘w‘;
????
????if（argc?????????fprintf（stderr?“\nUsage:\t%s?{?address?}?[?type?[?data?]?]\n“
????????????“\taddress?:?memory?address?to?act?upon\n“
????????????“\ttype????:?access?operation?type?:?[b]yte?[h]alfword?[w]ord\n“
????????????“\tdata????:?data?to?be?written\n\n“
????????????argv[0]）;
????????exit（1）;
????}
????target?=?strtoul（argv[1]?0?0）;

????if（argc?>?2）
????????access_type?=?tolower（argv[2][0]）;


????if（（fd?=?open（“/dev/mem“?O_RDWR?|?O_SYNC））?==?-1）?FATAL;
????printf（“/dev/mem?opened.\n“）;?
????fflush（stdout）;
????
????/*?Map?one?page?*/
????map_base?=?mmap（0?MAP_SIZE?PROT_READ?|?PROT_WRITE?MAP_SHARED?fd?target?&?~MAP_MASK）;
????if（map_base?==?（void?*）?-1）?FATAL;
????printf（“Memory?mapped?at?address?%p.\n“?map_base）;?
????fflush（stdout）;
????
????virt_addr?=?map_base?+?（target?&?MAP_MASK）;
????switch（access_type）?{
????????case?‘b‘:
????????????read_result?=?*（（unsigned?char?*）?virt_addr）;
????????????break;
????????case?‘h‘:
????????????read_resu

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\
?????文件?????????378??2015-12-17?03:06??Amp-zynq-master\.gitattributes
?????文件?????????574??2015-12-17?03:06??Amp-zynq-master\.gitignore
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\generated_files\
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\generated_files\FPGA\
?????文件?????2083850??2015-12-17?03:06??Amp-zynq-master\generated_files\FPGA\system.bit
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\generated_files\dtb\
?????文件???????12058??2015-12-17?03:06??Amp-zynq-master\generated_files\dtb\devicetree.dtb
?????文件????????4598??2015-12-17?03:06??Amp-zynq-master\generated_files\dtb\pl.dtsi
?????文件?????????297??2015-12-17?03:06??Amp-zynq-master\generated_files\dtb\skeleton.dtsi
?????文件????????1755??2015-12-17?03:06??Amp-zynq-master\generated_files\dtb\system.dts
?????文件???????10183??2015-12-17?03:06??Amp-zynq-master\generated_files\dtb\zynq-7000.dtsi
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\generated_files\elfs\
?????文件??????419538??2015-12-17?03:06??Amp-zynq-master\generated_files\elfs\amp_fsbl.elf
?????文件??????188720??2015-12-17?03:06??Amp-zynq-master\generated_files\elfs\app_cpu1.elf
?????文件?????1892814??2015-12-17?03:06??Amp-zynq-master\generated_files\elfs\u-boot.elf
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\generated_files\kernel\
?????文件?????3486352??2015-12-17?03:06??Amp-zynq-master\generated_files\kernel\uImage
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\generated_files\u-boot\
?????文件?????1892814??2015-12-17?03:06??Amp-zynq-master\generated_files\u-boot\u-boot.elf
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\hardware_prj\
?????文件?????????535??2015-12-17?03:06??Amp-zynq-master\hardware_prj\hw.xdc
?????文件???????39116??2015-12-17?03:06??Amp-zynq-master\hardware_prj\ps.tcl
?????文件????????8774??2015-12-17?03:06??Amp-zynq-master\hardware_prj\system.tcl
?????文件?????????930??2015-12-17?03:06??Amp-zynq-master\hardware_prj\system_pro.tcl
?????文件????????2633??2015-12-17?03:06??Amp-zynq-master\hardware_prj\system_wrapper.v
?????文件????????3872??2015-12-17?03:06??Amp-zynq-master\readme.md
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\sd_boot\
?????文件?????2538124??2015-12-17?03:06??Amp-zynq-master\sd_boot\BOOT.bin
?????文件???????12058??2015-12-17?03:06??Amp-zynq-master\sd_boot\devicetree.dtb
?????目錄???????????0??2015-12-17?03:06??Amp-zynq-master\sd_boot\devmem\
............此處省略414個文件信息