Kconfig SourceCode GDB调试 *****

1、GDB&makefile

　　scripts->Makefile编译FLAGS  -g

HOSTCC      = gcc
HOSTCXX      = g++
HOSTCFLAGS    :=
HOSTCXXFLAGS    :=
include $(srctree)/scripts/Kbuild.include

HOSTCFLAGS    += $(call hostcc-option,-Wall -Wstrict-prototypes -O2 -g -fomit-frame-pointer,)
HOSTCXXFLAGS    += -O2

　静态模式：

　　所有xxxconfig的目标都执行

　　　　%config: scripts_basic outputmakefile FORCE customer

customer:
    ../code/tools/gen_radisson_customer.pl -C ../CUS_FILE

config: scripts_basic outputmakefile FORCE customer
#    $(Q)mkdir -p include
    $(Q)$(MAKE) $(build)=scripts/kconfig $@
    $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease

%config: scripts_basic outputmakefile FORCE customer
#    $(Q)mkdir -p include
    $(Q)$(MAKE) $(build)=scripts/kconfig $@
    $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease

Makefile的执行过程：

../code/tools/gen_radisson_customer.pl -C ../CUS_FILE

make -f scripts/Makefile.build obj=scripts/kconfig menuconfig
set -e;  echo '  HOSTCC  scripts/kconfig/conf.o'; 
gcc -Wp,-MD,scripts/kconfig/.conf.o.d  -Wall -Wstrict-prototypes -O2 -g -fomit-frame-pointer      \
　　 -c -o scripts/kconfig/conf.o scripts/kconfig/conf.c; scripts/basic/fixdep scripts/kconfig/.conf.o.d scripts/kconfig/conf.o \
　　'gcc -Wp,-MD,scripts/kconfig/.conf.o.d  -Wall -Wstrict-prototypes -O2 -g -fomit-frame-pointer       -c -o scripts/kconfig/conf.o scripts/kconfig/conf.c' \
　　> scripts/kconfig/.conf.o.tmp; rm -f scripts/kconfig/.conf.o.d; mv -f scripts/kconfig/.conf.o.tmp scripts/kconfig/.conf.o.cmd
set -e;  echo '  HOSTCC  scripts/kconfig/kxgettext.o'; 
gcc -Wp,-MD,scripts/kconfig/.kxgettext.o.d  -Wall -Wstrict-prototypes -O2 -g -fomit-frame-pointer       -c -o scripts/kconfig/kxgettext.o scripts/kconfig/kxgettext.c; scripts/basic/fixdep scripts/kconfig/.kxgettext.o.d scripts/kconfig/kxgettext.o 
'gcc -Wp,-MD,scripts/kconfig/.kxgettext.o.d  -Wall -Wstrict-prototypes -O2 -g -fomit-frame-pointer       -c -o scripts/kconfig/kxgettext.o scripts/kconfig/kxgettext.c' > scripts/kconfig/.kxgettext.o.tmp; 
rm -f scripts/kconfig/.kxgettext.o.d; 
mv -f scripts/kconfig/.kxgettext.o.tmp scripts/kconfig/.kxgettext.o.cmd
set -e;  echo '  HOSTCC  scripts/kconfig/mconf.o'; 
gcc -Wp,-MD,scripts/kconfig/.mconf.o.d  -Wall -Wstrict-prototypes -O2 -g -fomit-frame-pointer       -c -o scripts/kconfig/mconf.o scripts/kconfig/mconf.c; scripts/basic/fixdep scripts/kconfig/.mconf.o.d scripts/kconfig/mconf.o 
'gcc -Wp,-MD,scripts/kconfig/.mconf.o.d  -Wall -Wstrict-prototypes -O2 -g -fomit-frame-pointer       -c -o scripts/kconfig/mconf.o scripts/kconfig/mconf.c' > scripts/kconfig/.mconf.o.tmp; rm -f scripts/kconfig/.mconf.o.d; 
mv -f scripts/kconfig/.mconf.o.tmp scripts/kconfig/.mconf.o.cmd
set -e;  echo '  HOSTCC  scripts/kconfig/zconf.tab.o'; 
gcc -Wp,-MD,scripts/kconfig/.zconf.tab.o.d  -Wall -Wstrict-prototypes -O2 -g -fomit-frame-pointer      -Iscripts/kconfig -c -o scripts/kconfig/zconf.tab.o scripts/kconfig/zconf.tab.c; scripts/basic/fixdep scripts/kconfig/.zconf.tab.o.d scripts/kconfig/zconf.tab.o 
'gcc -Wp,-MD,scripts/kconfig/.zconf.tab.o.d  -Wall -Wstrict-prototypes -O2 -g -fomit-frame-pointer      -Iscripts/kconfig -c -o scripts/kconfig/zconf.tab.o scripts/kconfig/zconf.tab.c' > scripts/kconfig/.zconf.tab.o.tmp; 
rm -f scripts/kconfig/.zconf.tab.o.d; 
mv -f scripts/kconfig/.zconf.tab.o.tmp scripts/kconfig/.zconf.tab.o.cmd
set -e;  echo '  HOSTLD  scripts/kconfig/mconf'; 
gcc  -o scripts/kconfig/mconf scripts/kconfig/mconf.o scripts/kconfig/zconf.tab.o  ; echo 'cmd_scripts/kconfig/mconf := gcc  -o scripts/kconfig/mconf scripts/kconfig/mconf.o scripts/kconfig/zconf.tab.o  ' > scripts/kconfig/.mconf.cmd

make -f scripts/Makefile.build obj=scripts/kconfig/lxdialog

set -e;  echo '  HOSTLD  scripts/kconfig/lxdialog/lxdialog'; 
gcc  -o scripts/kconfig/lxdialog/lxdialog scripts/kconfig/lxdialog/checklist.o scripts/kconfig/lxdialog/menubox.o scripts/kconfig/lxdialog/textbox.o scripts/kconfig/lxdialog/yesno.o scripts/kconfig/lxdialog/inputbox.o scripts/kconfig/lxdialog/util.o scripts/kconfig/lxdialog/lxdialog.o scripts/kconfig/lxdialog/msgbox.o -lncursesw ; echo 'cmd_scripts/kconfig/lxdialog/lxdialog := gcc  -o scripts/kconfig/lxdialog/lxdialog scripts/kconfig/lxdialog/checklist.o scripts/kconfig/lxdialog/menubox.o scripts/kconfig/lxdialog/textbox.o scripts/kconfig/lxdialog/yesno.o scripts/kconfig/lxdialog/inputbox.o scripts/kconfig/lxdialog/util.o scripts/kconfig/lxdialog/lxdialog.o scripts/kconfig/lxdialog/msgbox.o -lncursesw ' > scripts/kconfig/lxdialog/.lxdialog.cmd
/bin/sh /home/kk/share/bak/512c/scripts_0925/scripts/kconfig/lxdialog/check-lxdialog.sh -check gcc -DCURSES_LOC="<ncurses.h>" -DLOCALE -lncursesw
:
gdb scripts/kconfig/mconf Config.in
make -C /home/kk/share/bak/512c/scripts_0925 KBUILD_SRC= .kernelrelease

源代码

　　整个UI的节点保存在“rootmenu”为“head”节点的链表中，即“rootmenu”为跟节点，“rootmenu”没有兄弟节点及父节点。

struct menu {
    struct menu *next;            //兄弟节点
    struct menu *parent;        //父节点
    struct menu *list;            //子节点链表，即下一级菜单的链表
    struct symbol *sym;            //节点符号
    struct property *prompt;    //节点提示符
    struct expr *dep;            //依赖
    unsigned int flags;
    //char *help;
    struct file *file;
    int lineno;
    void *data;
};

　　如下图的UI：

　　 

节点图：

　　

(gdb) p rootmenu
$ = {next = 0x0, parent = 0x0, list = 0x806bfe0, sym = 0x0, prompt = 0x8063d00, dep = 0x0, flags = , file = 0x0, lineno = , data = 0x0}
(gdb) p *rootmenu.list
$ = {next = 0x8067e70, parent = 0x8062a80 <rootmenu>, list = 0x806c0f8, sym = 0x806bfa0, prompt = 0x806c058, dep = 0x0, flags = ,
  file = 0x8067d98, lineno = , data = 0x0}
(gdb) p *rootmenu.list->prompt
$ = {next = 0x0, sym = 0x806bfa0, type = P_PROMPT, text = 0x806c040 "BUILD_RECORD", visible = {expr = 0x0, tri = yes}, expr = 0x0,
  menu = 0x806bfe0, file = 0x8067d98, lineno = }
(gdb) p *rootmenu.list->next->prompt
$ = {next = 0x0, sym = 0x8067e30, type = P_PROMPT, text = 0x8067ed0 "AQ", visible = {expr = 0x0, tri = yes}, expr = 0x0, menu = 0x8067e70,
  file = 0x8067df8, lineno = }
(gdb) p *rootmenu.list->next->next->prompt
$ = {next = 0x0, sym = 0x0, type = P_MENU, text = 0x8067ff0 "System Application", visible = {expr = 0x0, tri = no}, expr = 0x0, menu = 0x8068018,
  file = 0x8067fa8, lineno = }
(gdb) p *rootmenu.list->next->next->list->prompt
$ = {next = 0x0, sym = 0x8068078, type = P_PROMPT, text = 0x8068828 "System APP", visible = {expr = 0x0, tri = yes}, expr = 0x0, menu = 0x80687c8,
  file = 0x8067fa8, lineno = }
(gdb) p *rootmenu.list->next->next->list->next
$ = {next = 0x8068dd0, parent = 0x8068018, list = 0x0, sym = 0x8068ce8, prompt = 0x0, dep = 0x8068d58, flags = , file = 0x8067fa8, lineno = ,
  data = 0x0}
(gdb) p *rootmenu.list->next->next->list->next->next->prompt
$ = {next = 0x0, sym = 0x0, type = P_MENU, text = 0x8068da8 "Product Location Select", visible = {expr = 0x0, tri = no}, expr = 0x0,
  menu = 0x8068dd0, file = 0x8067fa8, lineno = }