DSP

uclinux-2008R1.5-RC3(bf561)到VDSP5的移植(59)：current_t

2019-07-13 15:57发布

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rev 0.1   快乐虾 http://blog.csdn.net/lights_joy/ lights@hb165.com   本文适用于 ADI bf561 DSP 优视BF561EVB开发板 uclinux-2008r1.5-rc3(smp patch) Visual DSP++ 5.0(update 5)   欢迎转载，但请保留作者信息   在include/asm/processor.h中有这样一个定义： /*  * Default implementation of macro that returns current  * instruction pointer ("program counter").  */ #define current_text_addr() ({ __label__ _l; _l: &&_l;}) 它的作用就是取当前PC的值，但是这行语句在VDSP下会引起一个错误： ../../security/commoncap.c "../../include/linux/skbuff.h", line 897: cc1454:  error: taking the address of a label is not a supported feature skb_over_panic(skb, len, current_text_addr());                            ^   "../../include/linux/skbuff.h", line 922: cc1454:  error: taking the address of a label is not a supported feature skb_under_panic(skb, len, current_text_addr());                             ^   2 errors detected in the compilation of "../../security/commoncap.c". cc3089: fatal error: Compilation failed Tool failed with exit/exception code: 1. Build was unsuccessful. 对其做如下修改： static inline unsigned long current_text_addr(void) {     unsigned long pc;       __asm__ __volatile__("%0 = rets;/n/t":"=d"(pc));     return pc; }  

1       参考资料

uclinux-2008R1.5-RC3(bf561)到VDSP5的移植(54)：MEM_SDRAM_BANKx(2009-2-1) uclinux-2008R1.5-RC3(bf561)到VDSP5的移植(55)：CONFIG_FLAT_NODE_MEM_MAP(2009-02-03) uclinux-2008R1.5-RC3(bf561)到VDSP5的移植(56)：L1 data memory overflow(2009-02-03) uclinux-2008R1.5-RC3(bf561)到VDSP5的移植(57)：bsz(2009-2-3) uclinux-2008R1.5-RC3(bf561)到VDSP5的移植(58)：_cplb_mgr(2009-2-3) 若您对本文有兴趣，可到http://www.bfin-tools.org/bbs/viewthread.php?tid=13&extra=参与讨论。

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