get_cpu_gdt_table...

study/kernel/03-vmarea/00-code/01-print/1.c

@@ -0,0 +1,28 @@
+/*************************************************************************
+    > File Name: 1.c
+    > Author: GatieMe
+    > Mail: gatieme@163.com
+    > Created Time: Tue 21 Mar 2017 11:45:53 PM CST
+ ************************************************************************/
+
+
+
+//  Linux内核源代码情景分析
+//  2.2  地址映射的全过程
+#include <stdio.h>
+#include <stdlib.h>
+
+
+void greeting(void)
+{
+    printf("Hello World\n");
+}
+
+int main(int argc, char *argv[])
+{
+    greeting( );
+
+	return EXIT_SUCCESS;
+}
+
+

study/kernel/03-vmarea/00-code/01-print/hello.c

@@ -8,6 +8,7 @@
 #include <linux/mm_types.h>
 
 
+// [《深入理解Linux内核》内存寻址学习心得](http://blog.chinaunix.net/uid-27776472-id-4304663.html)
 MODULE_LICENSE("Dual BSD/GPL");
 
 

study/kernel/03-vmarea/00-code/02-gdt_table/.get_gdt_table.ko.cmd

@@ -0,0 +1 @@
+cmd_/home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/03-vmarea/00-code/02-gdt_table/get_gdt_table.ko := ld -r -m elf_x86_64 -T ./scripts/module-common.lds --build-id  -o /home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/03-vmarea/00-code/02-gdt_table/get_gdt_table.ko /home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/03-vmarea/00-code/02-gdt_table/get_gdt_table.o /home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/03-vmarea/00-code/02-gdt_table/get_gdt_table.mod.o

study/kernel/03-vmarea/00-code/02-gdt_table/.tmp_versions/get_gdt_table.mod

@@ -0,0 +1,2 @@
+/home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/03-vmarea/00-code/02-gdt_table/get_gdt_table.ko
+/home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/03-vmarea/00-code/02-gdt_table/get_gdt_table.o

study/kernel/03-vmarea/00-code/02-gdt_table/Makefile

@@ -0,0 +1,75 @@
+# ------------------------------------------------------------------------------
+#
+# Makefile for the LDD-LinuxDeviceDrivers.
+#
+# Author: gatieme
+# Create: 2016-07-29 15:50:46
+# Last modified: 2016-07-29 16:10:29
+# Description:
+# 	This program is loaded as a kernel(v2.6.18 or later) module.
+# 	Use "make install" to load it into kernel.
+# 	Use "make remove" to remove the module out of kernel.
+#
+# ------------------------------------------------------------------------------
+
+
+
+#	my driver description
+DRIVER_VERSION := "1.0.0"
+DRIVER_AUTHOR  := "Gatieme @ AderStep Inc..."
+DRIVER_DESC    := "Linux input module for Elo MultiTouch(MT) devices"
+DRIVER_LICENSE := "Dual BSD/GPL"
+
+
+MODULE_NAME := get_gdt_table
+
+ifneq ($(KERNELRELEASE),)
+
+#CFG_FLAGS += -O2  -I./
+#EXTRA_CFLAGS  += $(C_FLAGS) $(CFG_INC) $(CFG_INC)
+
+
+
+obj-m := $(MODULE_NAME).o #print_vmarea.o
+
+else
+
+KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+
+PWD := $(shell pwd)
+
+modules:
+	make -C $(KERNELDIR) M=$(PWD) modules
+
+modules_install:
+	make -C $(KERNELDIR) M=$(PWD) modules_install
+
+
+
+insmod:
+	sudo insmod $(MODULE_NAME).ko
+
+reinsmod:
+	sudo rmmod $(MODULE_NAME)
+	sudo insmod $(MODULE_NAME).ko
+
+github:
+	cd $(ROOT) && make github
+
+rmmod:
+	sudo rmmod $(MODULE_NAME)
+
+test :
+	sudo ../injector/memInjector -l stack -m random -t word_0 --time 1 --timeout 3 -p 1
+
+clean:
+	make -C $(KERNELDIR) M=$(PWD) clean
+	rm -f modules.order Module.symvers Module.markers
+
+.PHNOY:
+	modules modules_install clean
+
+
+
+endif
+

study/kernel/03-vmarea/00-code/02-gdt_table/get_gdt_table.c

@@ -0,0 +1,36 @@
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+//#include <linux/moduleparam.h>
+#include <linux/sched.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/mm_types.h>
+#include <asm/desc.h>
+
+
+// [《深入理解Linux内核》内存寻址学习心得](http://blog.chinaunix.net/uid-27776472-id-4304663.html)
+// [lxr-get_cpu_gdt_table-Identifier Search](http://lxr.free-electrons.com/source/arch/x86/include/asm/desc.h#L48)
+// [lxr-desc_struct-Identifier Search](http://lxr.free-electrons.com/source/arch/x86/include/asm/desc_defs.h#L22)
+
+
+MODULE_LICENSE("Dual BSD/GPL");
+
+
+
+
+static int hello_init(void)
+{
+    struct desc_struct *gdt_table = get_cpu_gdt_table(0);
+    return 0;
+}
+
+
+
+static void hello_exit(void)
+{
+}
+
+
+module_init(hello_init);
+module_exit(hello_exit);

study/kernel/03-vmarea/00-code/02-gdt_table/get_gdt_table.mod.c

@@ -0,0 +1,30 @@
+#include <linux/module.h>
+#include <linux/vermagic.h>
+#include <linux/compiler.h>
+
+MODULE_INFO(vermagic, VERMAGIC_STRING);
+
+__visible struct module __this_module
+__attribute__((section(".gnu.linkonce.this_module"))) = {
+	.name = KBUILD_MODNAME,
+	.init = init_module,
+#ifdef CONFIG_MODULE_UNLOAD
+	.exit = cleanup_module,
+#endif
+	.arch = MODULE_ARCH_INIT,
+};
+
+static const struct modversion_info ____versions[]
+__used
+__attribute__((section("__versions"))) = {
+	{ 0x9d35aeec, __VMLINUX_SYMBOL_STR(module_layout) },
+	{ 0xbdfb6dbb, __VMLINUX_SYMBOL_STR(__fentry__) },
+};
+
+static const char __module_depends[]
+__used
+__attribute__((section(".modinfo"))) =
+"depends=";
+
+
+MODULE_INFO(srcversion, "6C7185198AC94911B82AE33");

study/kernel/03-vmarea/00-code/02-gdt_table/modules.order

@@ -0,0 +1 @@
+kernel//home/gatieme/Work/GitHub/LDD-LinuxDeviceDrivers/study/kernel/03-vmarea/00-code/02-gdt_table/get_gdt_table.ko