【已解决】uboot交叉编译出错：gcc/config/arm/lib1funcs.asm:1266: undefined reference to `raise’
编译最后出错：
UNDEF_SYM=`arm-xscale-linux-gnueabi-objdump -x lib_generic/libgeneric.a board/whgs/libwhgs.a cpu/pxa/libpxa.a lib_arm/libarm.a
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a |sed
-n -e 's/.*\(__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
arm-xscale-linux-gnueabi-ld -Bstatic -T /home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/board/whgs/u-boot.lds -Ttext 0x5c010000
$UNDEF_SYM cpu/pxa/start.o \
--start-group lib_generic/libgeneric.a board/whgs/libwhgs.a cpu/pxa/libpxa.a lib_arm/libarm.a
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a --end-group -L /opt/crosscompile/xscale/gcc-4.6.0-glibc-2.9/bin/../lib/gcc/arm-xscale-linux-gnueabi/4.6.0 -lgcc \
-Map u-boot.map -o u-boot
/opt/crosscompile/xscale/gcc-4.6.0-glibc-2.9/bin/../lib/gcc/arm-xscale-linux-gnueabi/4.6.0/libgcc.a(_dvmd_lnx.o): In function `__aeabi_ldiv0':
/home/crifan/develop/crosstool-ng/crosstool-ng-1.18.0_build/.build/src/gcc-4.6.0/libgcc/../gcc/config/arm/lib1funcs.asm:1266: undefined reference to `raise'
make: *** [u-boot] Error 1
crifan@ubuntu:u-boot-1.1.4-whgs$
xxx/libgcc.a(_dvmd_lnx.o): In function `__aeabi_ldiv0′:
xxx/gcc/config/arm/lib1funcs.asm:1266: undefined reference to `raise’
【解决过程】
但是看不太懂。
遇到类似问题，但是没说怎么解决。
3.这里也看到讨论：
但是还是不知道如何解决。
貌似需要重新build一个？？？
那人是自己手动添加一个了空的raise()函数而使得可以正常编译了。
此处，暂不用这种方法。
5.参考其回复：
说到了：当发生除于0才会出现除的函数，其中会去触发__div0函数
以及，说不是编译器的bug，而需要自己解决：
要么说动实现自己的_div0
要么重新用不同的配置重新去编译交叉编译器。
但是此处：
前者，不太会。
后者，很是麻烦。
所以都放弃。
其自己解决了：
I fixed locally by linking to src/target/firmware/lib/lib1funcs.S in osmocombb
and doing that:
— a/src/target/firmware/lib/lib1funcs.S
+++ b/src/target/firmware/lib/lib1funcs.S
@@ -323,6 +323,7 @@ E***Y(__aeabi_idivmod)
sub r1, r1, r3
mov pc, lr
+E***Y(__aeabi_ldiv0)
str lr, [sp, #-8]!
@@ -332,3 +333,6 @@ Ldiv0:
E***Y(__div0)
mov pc, lr
+E***Y(__aeabi_unwind_cpp_pr0)
And linking to it in Make.defs…
但是还是不太想要这种方法。
直接修改原始?，? raise() 直接回? zero. (只是不清楚要改哪，所以跳?)
直接使用原?提供的glibc ?生的 nsboot.bin?。不再?生uClibc 的nsboot.bin。 
此处，也不太会弄。
8.然后看到了
中也有类似的解决办法，但是还是觉得不好。
9.后来看到：
其中的几个人的解释，比较清楚：
U-Boot is not a GNU/Linux application. However, you’re using the GNU/Linux toolchain to compile it — so the libraries assume the presence of a GNU/Linux C library. In this case, the division routine wants to call &raise& to signal a division-by-zero exception.
People often try to abuse the GNU/Linux toolchain to build U-Boot because they want to use the same toolchain that they use to build the Linux kernel and GNU/Linux applications. But, U-Boot is really a bare-metal application, and, as such, should be built with a bare-metal toolchain, like our &ARM EABI& toolchains. There are often these kinds of problems with U-Boot when moving between different architectures or toolchain versions because the U-Boot source code has tricks to try to make the GNU/Linux toolchain work, and those tricks only work with
particular toolchains.
U-boot explicitly compiles its binaries for ARM with -mabi=apcs-gnu, not EABI, so linking to any EABI compiled libgcc will cause the same error message.
In mainline U-boot currently all libgcc-provided-routines for ARM are also implemented in the lib_arm directory. (yes, it is dirty, but it is done this way for ARM). So, as long as there is an implementation in the lib_Arm directory, nothing will be used from libgcc, and this error will not be seen, even if you use a linux destined compiler.
I noticed that this question was about an very out-dated version of U-boot, namely 1.1.4, so that might be cause some troubles as well.
So, use a proper compiler toolchain (not EABI, but surely a bare metal edition). Several options are possible, you can also use the ARM-ELDK from denx.de
然后去试试后面给出的解决办法：
（1）修改Makefile，改为：
# Add GCC lib
#PLATFORM_LIBS += -L $(shell dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc
（2）再去修改：lib_generic/vsprintf.c
#include &linux/string.h&
#include &linux/ctype.h&
#ifdef CFG_64BIT_VSPRINTF
#include &div64.h&
#include &common.h&
#define SPECIAL 32
#define LARGE 64
/* use 'ABCDEF' instead of 'abcdef' */
#define do_div(n,base) ({ \
__res = ((unsigned long) n) % (unsigned) \
n = ((unsigned long) n) / (unsigned) \
#ifdef CFG_64BIT_VSPRINTF
static char * number(char * str, long long num, int base, int size, int precision ,int type)
结果重新编译，则会导致更多的错误：
crifan@ubuntu:u-boot-1.1.4-whgs$ make clean
find . -type f \
\( -name 'core' -o -name '*.bak' -o -name '*~' \
-o -name '*.o'
-o -name '*.a'
\) -print \
| xargs rm -f
rm -f examples/hello_world examples/timer \
examples/eepro100_eeprom examples/sched \
examples/mem_to_mem_idma2intr examples/82559_eeprom \
examples/test_burst
rm -f tools/img2srec tools/mkimage tools/envcrc tools/gen_eth_addr
rm -f tools/mpc86x_clk tools/ncb
rm -f tools/easylogo/easylogo tools/bmp_logo
rm -f tools/gdb/astest tools/gdb/gdbcont tools/gdb/gdbsend
rm -f tools/env/fw_printenv tools/env/fw_setenv
rm -f board/cray/L1/bootscript.c board/cray/L1/bootscript.image
rm -f board/trab/trab_fkt board/voiceblue/eeprom
rm -f board/integratorap/u-boot.lds board/integratorcp/u-boot.lds
crifan@ubuntu:u-boot-1.1.4-whgs$ make whgs_config
Configuring for whgs board...
crifan@ubuntu:u-boot-1.1.4-whgs$ make
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/common'
UNDEF_SYM=`arm-xscale-linux-gnueabi-objdump -x lib_generic/libgeneric.a board/whgs/libwhgs.a cpu/pxa/libpxa.a lib_arm/libarm.a
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a |sed
-n -e 's/.*\(__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
arm-xscale-linux-gnueabi-ld -Bstatic -T /home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/board/whgs/u-boot.lds -Ttext 0x5c010000
$UNDEF_SYM cpu/pxa/start.o \
--start-group lib_generic/libgeneric.a board/whgs/libwhgs.a cpu/pxa/libpxa.a lib_arm/libarm.a
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a --end-group
-Map u-boot.map -o u-boot
cpu/pxa/libpxa.a(interrupts.o): In function `udelay_masked':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/cpu/pxa/interrupts.c:197: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/cpu/pxa/interrupts.c:202: undefined reference to `__aeabi_uidiv'
net/libnet.a(tftp.o): In function `TftpHandler':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/net/tftp.c:230: undefined reference to `__aeabi_uidivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/net/tftp.c:232: undefined reference to `__aeabi_uidivmod'
net/libnet.a(tftp.o): In function `TftpStart':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/net/tftp.c:372: undefined reference to `__aeabi_uidivmod'
net/libnet.a(bootp.o): In function `BootpRequest':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/net/bootp.c:672: undefined reference to `__aeabi_uidiv'
drivers/libdrivers.a(onenand_uboot.o): In function `flash_print_info':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/onenand_uboot.c:65: undefined reference to `__aeabi_uidivmod'
drivers/libdrivers.a(onenand_base.o): In function `onenand_command':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/onenand_base.c:203: undefined reference to `__aeabi_lasr'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/onenand_base.c:208: undefined reference to `__aeabi_lasr'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/onenand_base.c:209: undefined reference to `__aeabi_lasr'
drivers/libdrivers.a(onenand_base.o): In function `onenand_update_bufferram':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/onenand_base.c:468: undefined reference to `__aeabi_lasr'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/onenand_base.c:469: undefined reference to `__aeabi_lasr'
drivers/libdrivers.a(onenand_base.o):/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/onenand_base.c:439: more undefined references to `__aeabi_lasr' follow
drivers/libdrivers.a(onenand_base.o): In function `onenand_probe':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/onenand_base.c:1770: undefined reference to `__aeabi_uidiv'
drivers/libdrivers.a(onenand_bbt.o): In function `onenand_isbad_bbt':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/onenand_bbt.c:155: undefined reference to `__aeabi_lasr'
common/libcommon.a(cmd_date.o): In function `mk_date':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/common/cmd_date.c:146: undefined reference to `__aeabi_idiv'
common/libcommon.a(dlmalloc.o): In function `memalign':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/common/dlmalloc.c:2779: undefined reference to `__aeabi_uidivmod'
common/libcommon.a(lists.o): In function `ExpandListSpace':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/common/lists.c:158: undefined reference to `__aeabi_idiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/common/lists.c:160: undefined reference to `__aeabi_idiv'
lib_generic/libgeneric.a(display_options.o): In function `print_size':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_generic/display_options.c:53: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_generic/display_options.c:55: undefined reference to `__aeabi_uidiv'
lib_generic/libgeneric.a(vsprintf.o): In function `number':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_generic/vsprintf.c:162: undefined reference to `do_div'
lib_generic/libgeneric.a(zlib.o): In function `adler32':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_generic/zlib.c:2157: undefined reference to `__aeabi_uidivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_generic/zlib.c:2158: undefined reference to `__aeabi_uidivmod'
lib_generic/libgeneric.a(zlib.o): In function `inflate':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_generic/zlib.c:427: undefined reference to `__aeabi_uidivmod'
rtc/librtc.a(date.o): In function `GregorianDay':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:61: undefined reference to `__aeabi_idiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:61: undefined reference to `__aeabi_idiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:70: undefined reference to `__aeabi_idivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:70: undefined reference to `__aeabi_idivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:82: undefined reference to `__aeabi_idivmod'
rtc/librtc.a(date.o): In function `to_tm':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:90: undefined reference to `__aeabi_idiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:91: undefined reference to `__aeabi_idivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:94: undefined reference to `__aeabi_idiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:95: undefined reference to `__aeabi_idivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:95: undefined reference to `__aeabi_idiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:96: undefined reference to `__aeabi_idivmod'
rtc/librtc.a(date.o): In function `mktime':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:149: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:149: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/date.c:149: undefined reference to `__aeabi_uidiv'
rtc/librtc.a(pcf8563.o): In function `rtc_set':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:93: undefined reference to `__aeabi_idivmod'
rtc/librtc.a(pcf8563.o): In function `bin2bcd':
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidivmod'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidiv'
/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc/pcf8563.c:141: undefined reference to `__aeabi_uidivmod'
make: *** [u-boot] Error 1
crifan@ubuntu:u-boot-1.1.4-whgs$
10.然后看到之前的一堆人的讨论：
此处我用的交叉编译器是arm-xscale-linux-gnueabi，是EABI的
而uboot中对于arm则显式地要求
-mabi=apcs-gnu
即非EABI的。
结果就是：
我的交叉编译器版本太新，而uboot版本太老：1.1.4
所以出了问题。
如果是用来编译比较新的，尤其是最新的uboot，应该就可以了。
11.所以，先去恢复上述的修改再说。
12.然后再想办法，如何去添加自己的raise()或者__aeabi_ldiv0。
去找到之前的crosstool-ng的编译的地方：
/home/crifan/develop/crosstool-ng/crosstool-ng-1.18.0_build/.build/src/gcc-4.6.0/libgcc/../gcc/config/arm/lib1funcs.asm
可以找到相关的代码的：
/* ------------------------------------------------------------------------ */
#ifdef L_dvmd_lnx
@ GNU/Linux division-by zero handler.
Used in place of L_dvmd_tls
/* Constant taken from &asm/signal.h&.
#define SIGFPE 8
#ifdef __ARM_EABI__
WEAK aeabi_idiv0
WEAK aeabi_ldiv0
ARM_FUNC_START aeabi_idiv0
ARM_FUNC_START aeabi_ldiv0
ARM_FUNC_START div0
do_push {r1, lr}
mov r0, #SIGFPE
bl SYM(raise) __PLT__
#ifdef __ARM_EABI__
FUNC_END aeabi_ldiv0
FUNC_END aeabi_idiv0
FUNC_END div0
#endif /* L_dvmd_lnx */
但是也不方便改啊。
13.然后是找到了uboot-1.1.4中的，自己的一个.S汇编文件：
board/whgs/lowlevel_init.S
crifan@ubuntu:u-boot-1.1.4-whgs$ gedit
arm_config.mk
lib_nios2/
microblaze_config.mk
mips_config.mk
lib_generic/
m68k_config.mk
MAINTAINERS
u-boot.map
nios2_config.mk
lib_microblaze/
nios_config.mk
i386_config.mk
Makefile.orig
ppc_config.mk
crifan@ubuntu:u-boot-1.1.4-whgs$ gedit board/
Display all 197 possibilities? (y or n)
crifan@ubuntu:u-boot-1.1.4-whgs$ gedit board/whgs/
ethernetselftest.h
lowlevel_init.o
selftest.h
ethernetselftest.o
lowlevel_init.S
phycore_pxa270.h
selftest.o
lowlevel_init.S.old
pxavoltage.S
smc91111.h
ethernetselftest.c
selftest.c
u-boot.lds
crifan@ubuntu:u-boot-1.1.4-whgs$ gedit board/whgs/lowlevel_init.S
在文件的最后，添加上对应的raise函数：
@add empty raise() to fix (when use new EABI xscale cross compiler to) compile
@error gcc/config/arm/lib1funcs.asm:1266: undefined reference to `raise'
.globl raise
mov pc, lr
然后再去编译试试，看看能否消除此错误，果然消除此错误了：
crifan@ubuntu:u-boot-1.1.4-whgs$ make
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/tools'
make[1]: `.depend' is up to date.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/tools'
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post'
make[1]: `.depend' is up to date.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post'
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post/cpu'
make[1]: `.depend' is up to date.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post/cpu'
make -C tools all
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/tools'
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/tools'
make -C post all
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post'
make -C post/cpu all
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post/cpu'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post/cpu'
make -C `dirname lib_generic/libgeneric.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_generic'
make[1]: `libgeneric.a' is up to date.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_generic'
make -C `dirname board/whgs/libwhgs.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/board/whgs'
arm-xscale-linux-gnueabi-gcc -M -g
-fno-strict-aliasing
-fno-common -ffixed-r8
-D__KERNEL__ -DTEXT_BASE=0x5c010000 -I/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/include -fno-builtin -ffreestanding -nostdinc -isystem /opt/crosscompile/xscale/gcc-4.6.0-glibc-2.9/bin/../lib/gcc/arm-xscale-linux-gnueabi/4.6.0/include -pipe
-DCONFIG_ARM -D__ARM__ -march=armv5 -mtune=xscale lowlevel_init.S whgs.c selftest.c ethernetselftest.c & .depend
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/board/whgs'
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/board/whgs'
arm-xscale-linux-gnueabi-gcc -Wa,-gstabs -D__ASSEMBLY__ -g
-fno-strict-aliasing
-fno-common -ffixed-r8
-D__KERNEL__ -DTEXT_BASE=0x5c010000 -I/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/include -fno-builtin -ffreestanding -nostdinc -isystem /opt/crosscompile/xscale/gcc-4.6.0-glibc-2.9/bin/../lib/gcc/arm-xscale-linux-gnueabi/4.6.0/include -pipe
-DCONFIG_ARM -D__ARM__ -march=armv5 -mtune=xscale -c -o lowlevel_init.o /home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/board/whgs/lowlevel_init.S
arm-xscale-linux-gnueabi-ar crv libwhgs.a whgs.o selftest.o ethernetselftest.o lowlevel_init.o
r - whgs.o
r - selftest.o
r - ethernetselftest.o
r - lowlevel_init.o
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/board/whgs'
make -C `dirname cpu/pxa/libpxa.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/cpu/pxa'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/cpu/pxa'
make -C `dirname lib_arm/libarm.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_arm'
make[1]: `libarm.a' is up to date.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/lib_arm'
make -C `dirname net/libnet.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/net'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/net'
make -C `dirname disk/libdisk.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/disk'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/disk'
make -C `dirname rtc/librtc.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/rtc'
make -C `dirname dtt/libdtt.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/dtt'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/dtt'
make -C `dirname drivers/libdrivers.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers'
make -C `dirname drivers/sk98lin/libsk98lin.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/sk98lin'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/drivers/sk98lin'
make -C `dirname post/libpost.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post'
make -C `dirname post/cpu/libcpu.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post/cpu'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/post/cpu'
make -C `dirname common/libcommon.a`
make[1]: Entering directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/common'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/common'
UNDEF_SYM=`arm-xscale-linux-gnueabi-objdump -x lib_generic/libgeneric.a board/whgs/libwhgs.a cpu/pxa/libpxa.a lib_arm/libarm.a
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a |sed
-n -e 's/.*\(__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
arm-xscale-linux-gnueabi-ld -Bstatic -T /home/crifan/develop/crosscompile/wihart_gateway_6_0/old_project_lack_eclipse_project_file/BSP/Bootloader/u-boot-1.1.4-whgs/board/whgs/u-boot.lds -Ttext 0x5c010000
$UNDEF_SYM cpu/pxa/start.o \
--start-group lib_generic/libgeneric.a board/whgs/libwhgs.a cpu/pxa/libpxa.a lib_arm/libarm.a
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a drivers/libdrivers.a drivers/sk98lin/libsk98lin.a post/libpost.a post/cpu/libcpu.a common/libcommon.a --end-group -L /opt/crosscompile/xscale/gcc-4.6.0-glibc-2.9/bin/../lib/gcc/arm-xscale-linux-gnueabi/4.6.0 -lgcc \
-Map u-boot.map -o u-boot
arm-xscale-linux-gnueabi-objcopy --gap-fill=0xff -O srec u-boot u-boot.srec
arm-xscale-linux-gnueabi-objcopy --gap-fill=0xff -O binary u-boot u-boot.bin
crifan@ubuntu:u-boot-1.1.4-whgs$
此处，用交叉编译器arm-xscale-linux-gnueabi（gcc-4.6.0-glibc-2.9）去编译老版本的uboot（1.1.4）而出错：
gcc/config/arm/lib1funcs.asm:1266: undefined reference to `raise’
的原因是：
Uboot是个非GNU/Linux的程序，是个裸程序（bare-metal application）；
而交叉编译器arm-xscale-linux-gnueabi是GNU/Linux工具链，是可以正常编译Linux内核等东西的，
但是去编译非GNU/Linux的Uboot的话，就会出现：
当出现被0除的情况时，会调用__aeabi_ldiv0（即eabi版本的__div0），当在GNU/Linux系统中时，其会去触发系统的SIGFPE，进而调用到对应的raise(3)函数。
而此处，由于Uboot不是Linux类程序，没有对应的raise()函数，所以报错找不到。
解决办法是：
1.去用其他对应的配置（估计是用于指定是非GUN/Linux类程序的），重新编译一个新版本的交叉编译器，然后用新的非GNU/Linux的交叉编译器，去编译此旧版本的uboot，即可正常编译
2.修改自己的uboot，加上对应的（随便写个空的）__aeabi_ldiv0或raise函数即可。
此处选用第二种，具体做法：
此处的uboot是whgs的（即配置的时候用的是make whgs_config）
所以找到对应的汇编文件，即：
board/whgs/lowlevel_init.S
在文件最后，添加上
@add empty raise() to fix (when use new EABI xscale cross compiler to) compile
@error gcc/config/arm/lib1funcs.asm:1266: undefined reference to `raise'
.globl raise
mov pc, lr
然后重新编译，即可。
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