Hi, > -----Original Message----- > From: Alexey Brodkin <abrodkin@xxxxxxxxxxxx> > Sent: Monday, September 2, 2019 12:43 PM > To: u-boot@xxxxxxxxxxxxx > Cc: uboot-snps-arc@xxxxxxxxxxxx; linux-snps-arc@xxxxxxxxxxxxxxxxxxx; Alexey Brodkin > <abrodkin@xxxxxxxxxxxx>; Kever Yang <kever.yang@xxxxxxxxxxxxxx> > Subject: [PATCH] arc: libgcc: Import __udivdi3 & __udivmoddi4 to allow 64-bit division > > As reported by Kever here [1] we were unable to compile 64-bit division > code due to missing definition of __udivdi3(). > > Import its implementation and __udivmoddi4() as its direct dependency > from today's libgcc [2]. > > [1] https://patchwork.ozlabs.org/patch/1146845/ > [2] https://github.com/gcc-mirror/gcc/commit/5d8723600bc0eed41226b5a6785bc02a053b45d5 > > Signed-off-by: Alexey Brodkin <abrodkin@xxxxxxxxxxxx> > Cc: Kever Yang <kever.yang@xxxxxxxxxxxxxx> For the record for EM SDP (emsdp_defconfig) building still fails this way: ----------------------------->8------------------------- arc-linux-ld.bfd: arch/arc/lib/lib.a(libgcc2.o): in function `__udivmoddi4': .../arch/arc/lib/libgcc2.c:195: undefined reference to `__clzdi2' arc-linux-ld.bfd: .../arch/arc/lib/libgcc2.c:195: undefined reference to `__clzdi2' arc-linux-ld.bfd: .../arch/arc/lib/libgcc2.c:196: undefined reference to `__clzdi2' arc-linux-ld.bfd: .../arch/arc/lib/libgcc2.c:196: undefined reference to `__clzdi2' ----------------------------->8------------------------- That happens because we use a very simple -mcpu=arcem which doesn't use HW normalizer unit. I'm preparing a patch that will improve EM SDP's compiler options. -Alexey _______________________________________________ linux-snps-arc mailing list linux-snps-arc@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-snps-arc
