内核编程

jazeltq

我在刚编译好的新内核下运行最简单的hello world！都报错一大堆，我用的是2.6.28的内核版本，已经把ａｓｍ,ｌｉｎｕｘ等头文件ｃｏｐｙ到/ｕｓｒ/ｉｎｃｌｕｄｅ下来，怎么还不行亚，我在原来的 25内核版本下，运行
ｍａｋｅ　ｈｅａｄｅｒｓ_ｉｎｓｔａｌｌ　仍然没有ｍｏｄｕｌｅｓ.ｈ的头文件，没办法只好新编译内核了，可是还是报错一大堆。
gcc -Wall -DMODULE -D__KERNEL__ -DLINUX  -c hello.c
In file included from /usr/include/linux/prefetch.h:14,
                 from /usr/include/linux/list.h:6,
                 from /usr/include/linux/module.h:9,
                 from hello.c:2:
/usr/include/asm/processor.h:113: error: ‘CONFIG_X86_L1_CACHE_SHIFT’ undeclared here (not in a function)
/usr/include/asm/processor.h:113: error: requested alignment is not a constant
/usr/include/asm/processor.h: In function ‘load_cr3’:
/usr/include/asm/processor.h:186: error: ‘CONFIG_PAGE_OFFSETUL’ undeclared (first use in this function)
/usr/include/asm/processor.h:186: error: (Each undeclared identifier is reported only once
/usr/include/asm/processor.h:186: error: for each function it appears in.)
/usr/include/asm/processor.h: At top level:
/usr/include/asm/processor.h:235: error: requested alignment is not a constant
/usr/include/asm/processor.h:272: error: requested alignment is not a constant
In file included from /usr/include/linux/elf.h:7,
                 from /usr/include/linux/module.h:14,
                 from hello.c:2:
/usr/include/asm/elf.h: In function ‘elf_common_init’:
/usr/include/asm/elf.h:167: error: ‘struct pt_regs’ has no member named ‘r8’
/usr/include/asm/elf.h:167: error: ‘struct pt_regs’ has no member named ‘r9’
/usr/include/asm/elf.h:167: error: ‘struct pt_regs’ has no member named ‘r10’
/usr/include/asm/elf.h:167: error: ‘struct pt_regs’ has no member named ‘r11’
/usr/include/asm/elf.h:168: error: ‘struct pt_regs’ has no member named ‘r12’
/usr/include/asm/elf.h:168: error: ‘struct pt_regs’ has no member named ‘r13’
/usr/include/asm/elf.h:168: error: ‘struct pt_regs’ has no member named ‘r14’
/usr/include/asm/elf.h:168: error: ‘struct pt_regs’ has no member named ‘r15’
In file included from /usr/include/linux/module.h:22,
                 from hello.c:2:
/usr/include/asm/module.h:68:2: error: #error unknown processor family
hello.c: In function ‘init_module’:
hello.c:10: warning: implicit declaration of function ‘prink’
make: *** [hello.o] Error 1

这是怎么回事亚！

Godbach

建议LZ看一看LDD3中介绍的2.6下编译内核模块的Makefile是怎么写的。

Godbach

# To build modules outside of the kernel tree, we run "make"
# in the kernel source tree; the Makefile these then includes this
# Makefile once again.
# This conditional selects whether we are being included from the
# kernel Makefile or not.
ifeq ($(KERNELRELEASE),)

    # Assume the source tree is where the running kernel was built
    # You should set KERNELDIR in the environment if it's elsewhere
    KERNELDIR ?= /lib/modules/$(shell uname -r)/build
    # The current directory is passed to sub-makes as argument
    PWD := $(shell pwd)

modules:
        $(MAKE) -C $(KERNELDIR) M=$(PWD) modules

modules_install:
        $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install

clean:
        rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions

.PHONY: modules modules_install clean

else
    # called from kernel build system: just declare what our modules are
    obj-m := hello.o
endif

jazeltq

ｍａｋｅｆｉｌｅ是ｌｉｎｕｘ ｍｏｄｕｌｅ　ｐｒｏｇｒａｍｉｎｇ　ｇｕｉｄｅ那本书上写的，怎么是makefile出错了？

[ 本帖最后由 jazeltq 于 2009-3-23 16:57 编辑 ]

fanpf

gcc -Wall -DMODULE -D__KERNEL__ -DLINUX  -c hello.c

单独这一句是不行的

Godbach

gcc -Wall -DMODULE -D__KERNEL__ -DLINUX  -c hello.c

你了解这种编译内核模块的方法是那个版本的吗

Godbach

ｍａｋｅｆｉｌｅ是ｌｉｎｕｘ ｍｏｄｕｌｅ　ｐｒｏｇｒａｍｉｎｇ　ｇｕｉｄｅ那本书上写的，怎么是makefile出错了？

你确认一下你看的这本书人家是基于2.4的还是2.6的。这两个版本的编译方法不一样

goter

Godbach是好人啊

jazeltq

thank you a lot,我知道了，我先看看ldd把，我看的那本书太老了

scutan

原帖由 jazeltq 于 2009-3-23 18:43 发表
thank you a lot,我知道了，我先看看ldd把，我看的那本书太老了

网上还有一份文档叫：
Linux kernel module programming guide 有2.6版本的。