Hi Brock On Sun Jun 29, 2025 at 7:37 AM EEST, brock_zheng wrote: > > Hi, all > > I found a bug on AARCH64 platform about clean .bss section after > relocating. > > In crt0_64.S, it use instruction 'ldr' to load the start/stop > address of BSS after relocating. My testing shows that > __bss_start loaded successfuly, but 'x1 <= __bss_end' got the > address _BEFORE_ allocating.o
One of the problems when using the literal pool is that the access is PC-relative, but the entry itself contains an asbolute address. This code runs after relocation right? It the literal pool entries relocated? Any idea why __bss_end is wrong? It would be helpful to have a more complete commit message > > If I swap the two instruction sequence, the result is swapped > also. But neither code can gives the right result of those two > addesses _AFTER_ relocation. > > my patch use 'adr' instead of 'ldr', seems OK for my RK3568 chip. Uisng adr for linker symbols is fine, but can you please use adrp+add instead of adr? Thanks /Ilias > > > -- > Brock Zheng <yzh...@techyauld.com> > 郑 祎 > > 北京中科腾越科技发展有限公司 > 北京市 海淀区 东北旺西路8号 中关村软件园27号院 千方大厦A座2层 (邮编:100193)
