[Bug 233361] mips build with BSD_CRTBEGIN, Clang, LLD fails
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233361 --- Comment #5 from Kyle Evans --- I use the following patch in my local mips-llvm branch: commit 9783fdf63c8a4e1775a494b47b7f3648b65779ab Author: Kyle Evans Date: Mon Aug 19 13:18:47 2019 -0500 Hack around .cprestore anger diff --git a/lib/csu/mips/crt.h b/lib/csu/mips/crt.h index 1d967b73ffe..a90d8661f34 100644 --- a/lib/csu/mips/crt.h +++ b/lib/csu/mips/crt.h @@ -29,12 +29,14 @@ #defineHAVE_CTORS #defineCTORS_CONSTRUCTORS #ifdef __mips_o32 +/* The .cprestore is bogus, as we do elsewhere */ #defineINIT_CALL_SEQ(func) \ ".set noreorder\n" \ "bal 1f \n" \ "nop \n" \ "1:\n" \ ".cpload $ra \n" \ +".cprestore 12 \n" \ ".set reorder \n" \ ".local" __STRING(func) "\n" \ "jal " __STRING(func) I fake the .cprestore based on what we do for _mcount in ^/sys/mips/include/profile.h. Whether this is wrong or not, I do not know, but it results in a functional world along with the rest of my mips-llvm patches (https://github.com/freebsd/freebsd/compare/master...kevans91:mips-llvm?expand=1), some of which were stolen from jhb. This branch results in a functional CLANG_BOOTSTRAP+LLD_BOOTSTRAP world and kernel for mips32, but mips64 kernel is horribly broken in weird ways with both llvm8 and projects/clang900-import and CLANG_BOOTSTRAP+LD_BOOTSTRAP. -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
[Bug 233361] mips build with BSD_CRTBEGIN, Clang, LLD fails
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233361 Ed Maste changed: What|Removed |Added Blocks||228919 Referenced Bugs: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=228919 [Bug 228919] GCC 4.2.1 removal -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
[Bug 233361] mips build with BSD_CRTBEGIN, Clang, LLD fails
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233361 Dan Nelson changed: What|Removed |Added CC||dnelson_1...@yahoo.com --- Comment #4 from Dan Nelson --- A gcc build actually does generate the same warning message, but doesn't fail the compile. It looks like gcc doesn't add "--fatal-warnings" to the gas commandline when gcc is in -Werror mode, so the assembly warnings are ignored. -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
[Bug 233361] mips build with BSD_CRTBEGIN, Clang, LLD fails
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233361 John Baldwin changed: What|Removed |Added CC||j...@freebsd.org --- Comment #3 from John Baldwin --- This appears to be a clang 7.0 regression. External GCC is able to build this fine. In addition, the old crt bits in contrib/gcc use the same logic (.cpload without a .cprestore), and while clang compiled that during a buildworld WITHOUT_BSD_CRTBEGIN=yes, clang now chokes trying to link libc: ld: error: can't create dynamic relocation R_MIPS_32 against local symbol in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output >>> defined in cancelpoints_sem_new.pico >>> referenced by cancelpoints_sem_new.c >>> cancelpoints_sem_new.pico:(.eh_frame+0x1C) So, clang 7.0 seems to be busted compared to clang 6 + patches. :-/ I haven't tried mips64 yet, only 32-bit mips. Cheri only tests 64-bit mips, so it might be that 64-bit works ok and only 32-bit mips is broken. -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
[Bug 233361] mips build with BSD_CRTBEGIN, Clang, LLD fails
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233361 --- Comment #2 from Ed Maste --- (In reply to Andrew Turner from comment #1) I saw this in a tinderbox build from my wipbsd branch https://github.com/emaste/freebsd/tree/wipbsd.20181109 I enabled Clang for mips in https://github.com/emaste/freebsd/commit/d676ebee94e317b93d61d3fc346eaab75bb8b5be I think that it should be reproducible with these src.conf knobs: WITH_CLANG WITH_CLANG_BOOTSTRAP WITH_CLANG_IS_CC WITH_LLD WITH_LLD_BOOTSTRAP WITH_LLD_IS_LD (I used to have some additional compiler fixes for mips in an earlier wipbsd branch but I seem to have lost them.) -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
[Bug 233361] mips build with BSD_CRTBEGIN, Clang, LLD fails
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233361 --- Comment #1 from Andrew Turner --- What build flags need to be set to reproduce this? -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
[Bug 233361] mips build with BSD_CRTBEGIN, Clang, LLD fails
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233361 Ed Maste changed: What|Removed |Added Hardware|Any |mips -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
[Bug 233361] mips build with BSD_CRTBEGIN, Clang, LLD fails
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233361 Bug ID: 233361 Summary: mips build with BSD_CRTBEGIN, Clang, LLD fails Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: misc Assignee: b...@freebsd.org Reporter: ema...@freebsd.org >From _.mips.mips.buildworld (mips* same): --- crtbeginS.o --- :9:1: error: no .cprestore used in PIC mode [-Werror,-Winline-asm] jal __do_global_dtors_aux ^ :18:1: error: no .cprestore used in PIC mode [-Werror,-Winline-asm] jal register_classes ^ _.mips.mips64.buildworld (mips64* same): /scratch/tmp/emaste/obj/scratch/tmp/emaste/freebsd/mips.mips64/tmp/usr/bin/ld: /scratch/tmp/emaste/obj/scratch/tmp/emaste/freebsd/mips.mips64/tmp/usr/lib/crtbeginS.o: CALL16 reloc at 0x18 not against global symbol /scratch/tmp/emaste/obj/scratch/tmp/emaste/freebsd/mips.mips64/tmp/usr/lib/crtbeginS.o: could not read symbols: Bad value cc: error: linker command failed with exit code 1 (use -v to see invocation) _.mips.mipsn32.buildworld: /scratch/tmp/emaste/obj/scratch/tmp/emaste/freebsd/mips.mipsn32/tmp/usr/bin/ld: /scratch/tmp/emaste/obj/scratch/tmp/emaste/freebsd/mips.mipsn32/tmp/usr/lib/crtbeginS.o: CALL16 reloc at 0x14 not against global symbol /scratch/tmp/emaste/obj/scratch/tmp/emaste/freebsd/mips.mipsn32/tmp/usr/lib/crtbeginS.o: could not read symbols: Bad value cc: error: linker command failed with exit code 1 (use -v to see invocation) -- You are receiving this mail because: You are the assignee for the bug. ___ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
