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 [email protected]
    $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease

%config: scripts_basic outputmakefile FORCE customer
#    $(Q)mkdir -p include
    $(Q)$(MAKE) $(build)=scripts/kconfig [email protected]
    $(Q)$(MAKE) -C $(srctree) 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
$25 = {next = 0x0, parent = 0x0, list = 0x806bfe0, sym = 0x0, prompt = 0x8063d00, dep = 0x0, flags = 0, file = 0x0, lineno = 0, data = 0x0}
(gdb) p *rootmenu.list
$27 = {next = 0x8067e70, parent = 0x8062a80 <rootmenu>, list = 0x806c0f8, sym = 0x806bfa0, prompt = 0x806c058, dep = 0x0, flags = 1,
  file = 0x8067d98, lineno = 3, data = 0x0}
(gdb) p *rootmenu.list->prompt
$29 = {next = 0x0, sym = 0x806bfa0, type = P_PROMPT, text = 0x806c040 "BUILD_RECORD", visible = {expr = 0x0, tri = yes}, expr = 0x0,
  menu = 0x806bfe0, file = 0x8067d98, lineno = 4}
(gdb) p *rootmenu.list->next->prompt
$30 = {next = 0x0, sym = 0x8067e30, type = P_PROMPT, text = 0x8067ed0 "AQ", visible = {expr = 0x0, tri = yes}, expr = 0x0, menu = 0x8067e70,
  file = 0x8067df8, lineno = 4}
(gdb) p *rootmenu.list->next->next->prompt
$31 = {next = 0x0, sym = 0x0, type = P_MENU, text = 0x8067ff0 "System Application", visible = {expr = 0x0, tri = no}, expr = 0x0, menu = 0x8068018,
  file = 0x8067fa8, lineno = 1}
(gdb) p *rootmenu.list->next->next->list->prompt
$32 = {next = 0x0, sym = 0x8068078, type = P_PROMPT, text = 0x8068828 "System APP", visible = {expr = 0x0, tri = yes}, expr = 0x0, menu = 0x80687c8,
  file = 0x8067fa8, lineno = 4}
(gdb) p *rootmenu.list->next->next->list->next
$33 = {next = 0x8068dd0, parent = 0x8068018, list = 0x0, sym = 0x8068ce8, prompt = 0x0, dep = 0x8068d58, flags = 1, file = 0x8067fa8, lineno = 17,
  data = 0x0}
(gdb) p *rootmenu.list->next->next->list->next->next->prompt
$35 = {next = 0x0, sym = 0x0, type = P_MENU, text = 0x8068da8 "Product Location Select", visible = {expr = 0x0, tri = no}, expr = 0x0,
  menu = 0x8068dd0, file = 0x8067fa8, lineno = 22}