0

以下注意事项：

https://blackfin.uclinux.org/gf/project/uclinux-dist/forum/?_forum_action=ForumMessageBrowse&thread_id=46813&action=ForumBrowse&forum_id=39

我正在将 VDSP 编译器的 FFT 算法转换为裸机应用程序以在核心 B 上运行并在核心 A 上运行 uclinux。我有一个链接错误，我不明白它来自哪里：

调用：'/opt/uClinux/bfin-elf/bin/../bfin-elf/bin/ld.real''-v''-o''test_ad1836_driver''-T''coreb_test_ad1836_driver.lds''--只是符号''../../icc_core/icc''queue.o''ezkit_561.o''heap_2.o''port.o''tasks.o''test_ad1836_driver.o''list.o' 'croutine.o' 'user_isr.o' 'bfin_isr.o' 'app_c.o' 'context_sl_asm.o' 'cycle_count.o' 'CFFT_Rad4_NS_NBRev.o' '-Ttext' '0x3c00000' '-L' '/opt/ uClinux/bfin-elf/bfin-elf/lib''-L''/opt/uClinux/bfin-elf/bfin-elf/lib''-lc' GNU ld 版本 2.17 cycle_count.o：在函数Compute_Cycle_Count': /home/william/Development_new/Music_Recognition/code/uCLinux/uclinux-dist/user/blkfin-apps/icc_utils/example/DSP_imp/CFFT_Rad4_NS_NBRev/corea/cycle_count.asm:22: undefined reference toRet_Add'/home/william/Development_new/Music_Recognition/code/uCLinux/uclinux-dist/user/blkfin-apps/icc_utils/example/DSP_imp/CFFT_Rad4_NS_NBrev/corea/cycle_count.asm:23：未定义的参考Ret_Add' /home/william/Development_new/Music_Recognition/code/uCLinux/uclinux-dist/user/blkfin-apps/icc_utils/example/DSP_imp/CFFT_Rad4_NS_NBRev/corea/cycle_count.asm:27: undefined reference toSave_R7'/home/william/Development_new/Music_Recognition/code/uCLinux/uclinux-dist/user/blkfin-apps/icc_utils/example/DSP_imp/CFFT_Rad4_NS_NBRev/corea/cycle_count.asm:28：未定义对Save_R7' /home/william/Development_new/Music_Recognition/code/uCLinux/uclinux-dist/user/blkfin-apps/icc_utils/example/DSP_imp/CFFT_Rad4_NS_NBRev/corea/cycle_count.asm:44: undefined reference toSave_R7'/home/william 的引用/Development_new/Music_Recognition/code/uCLinux/uclinux-dist/user/blkfin-apps/icc_utils/example/DSP_imp/CFFT_Rad4_NS_NBrev/corea/cycle_count.asm:45：未定义对Save_R7' /home/william/Development_new/Music_Recognition/code/uCLinux/uclinux-dist/user/blkfin-apps/icc_utils/example/DSP_imp/CFFT_Rad4_NS_NBRev/corea/cycle_count.asm:48: undefined reference toRet_Add 的引用'/home/william/Development_new/Music_Recognition/code /uCLinux/uclinux-dist/user/blkfin-apps/icc_utils/example/DSP_imp/CFFT_Rad4_NS_NBRev/corea/cycle_count.asm:49：未定义对“Ret_Add”的引用

代码如下：

.section l1.data；
.对齐4；
.var _Ret_Add =0;
.var _Save_R7 =0;

.section l1.text；
.global _Compute_Cycle_Count;
.对齐 8;
_Compute_Cycle_Count：P0.L = _Ret_Add；
P0.H = _Ret_Add;
R3 = RETS；
[P0] = R3； 

    P0.L = _Save_R7;                                                       
    P0.H = _Save_R7;                                                       
    [P0] = R7;

...........

谢谢

威廉

4

1 回答 1

0

您的代码中没有_Ret_Add和_Save_R7的声明以供 GNU 汇编器理解。你应该把它从 VDSP asm 移植到 GNU asm：

_Ret_Add: .int 0;

或者，如果您更喜欢保持向后兼容：

.if defined (__GNUC__)
_Ret_Add:
.int 0;
.else
.var _Ret_Add =0;
.endif

看看这个。

于 2011-10-31T20:08:55.580 回答