[Bug ld/30938] [RISCV]linking erro with lp64f
https://sourceware.org/bugzilla/show_bug.cgi?id=30938 --- Comment #3 from Andreas Schwab --- crt1.o is part of libc, you need to build it for all multilibs. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug libsframe/30956] A potential null_pointer_deference bug
https://sourceware.org/bugzilla/show_bug.cgi?id=30956 Nick Clifton changed: What|Removed |Added CC||nickc at redhat dot com Status|UNCONFIRMED |RESOLVED Resolution|--- |MOVED --- Comment #1 from Nick Clifton --- Hi 姜瑞霖 Thank you for reporting these problems. Unfortunately the libiberty library is not managed by the GNU Binutils project. We use the sources, but they are maintained by the GCC project, so please could you refile this bug report here: https://gcc.gnu.org/bugzilla/enter_bug.cgi?product=gcc Thank you. Cheers Nick -- You are receiving this mail because: You are on the CC list for the bug.
[Bug gas/30850] gas arm: Strange behaviors while handling operator `[]`.
https://sourceware.org/bugzilla/show_bug.cgi?id=30850 Nick Clifton changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |NOTABUG CC||nickc at redhat dot com --- Comment #2 from Nick Clifton --- Yes, this is the intended behaviour. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/30930] Broken BTI veneers: ld-2.41 links mame in a way which gets stuck on aarch64
https://sourceware.org/bugzilla/show_bug.cgi?id=30930 Carlos O'Donell changed: What|Removed |Added Summary|ld-2.41 links mame in a way |Broken BTI veneers: ld-2.41 |which gets stuck on aarch64 |links mame in a way which ||gets stuck on aarch64 -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/30957] New: aarch64: unnecessary bti veneer
https://sourceware.org/bugzilla/show_bug.cgi?id=30957 Bug ID: 30957 Summary: aarch64: unnecessary bti veneer Product: binutils Version: 2.41 Status: NEW Severity: normal Priority: P2 Component: ld Assignee: unassigned at sourceware dot org Reporter: nsz at gcc dot gnu.org Target Milestone: --- bti veneer is only needed if the target instruction is not bti (or paciasp,...), but bfd ld sometimes emits the veneer unnecessarily. (gnu property is for BTI marking) (introduced by the fix for bug 30076 and causes large number of bti veneers in large executables that uncovered other veneer issues see bug 30930 ) $ cat a.s .section.a.text,"ax",@progbits .align 2 .global a_func .type a_func, %function a_func: hint34 // bti c b b_func .section.note.gnu.property,"a" .align 3 .word 4 .word 16 .word 5 .string "GNU" .word 3221225472 .word 4 .word 1 .align 3 $ cat b.s .section.b.text,"ax",@progbits .align 2 .global b_func .type b_func, %function nop // offset the function so it is not at section start b_func: hint34 // bti c ret .global _start .type _start, %function _start: b a_func .section.note.gnu.property,"a" .align 3 .word 4 .word 16 .word 5 .string "GNU" .word 3221225472 .word 4 .word 1 .align 3 $ as -o a.o a.s $ as -o b.o b.s $ ld --section-start=.a.text=0x0004 --section-start=.b.text=0x08041000 a.o b.o $ objdump -d a.out a.out: file format elf64-littleaarch64 Disassembly of section .a.text: 0004 : 4: d503245fbti c 40004: 1405b 40018 <__b_func_veneer> 40008: 140ab 40030 <__b_func_veneer+0x18> 4000c: d503201fnop 00040010 <__a_func_bti_veneer>: 40010: d503245fbti c 40014: 17fbb 4 00040018 <__b_func_veneer>: 40018: b0040010adrpx16, 8041000 <__bss_end__+0x7c30e88> 4001c: 9100c210add x16, x16, #0x30 40020: d61f0200br x16 ... Disassembly of section .b.text: 08041000 : 8041000: d503201fnop 08041004 : 8041004: d503245fbti c 8041008: d65f03c0ret 0804100c <_start>: 804100c: 1403b 8041018 <__a_func_veneer> 8041010: 140ab 8041038 <__b_func_bti_veneer+0x8> 8041014: d503201fnop 08041018 <__a_func_veneer>: 8041018: f0fbfff0adrpx16, 4 804101c: 91004210add x16, x16, #0x10 8041020: d61f0200br x16 ... 08041030 <__b_func_bti_veneer>: 8041030: d503245fbti c 8041034: 17f4b 8041004 -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/30930] Broken BTI veneers: ld-2.41 links mame in a way which gets stuck on aarch64
https://sourceware.org/bugzilla/show_bug.cgi?id=30930 --- Comment #25 from Szabolcs Nagy --- for the record i built a mame binary where $ readelf -aW mame |grep _ZN3emu6detail16device_registrar15register_deviceERNS0_21device_type_impl_baseE 885688: 084323c812 FUNCLOCAL DEFAULT 14 ___ZN3emu6detail16device_registrar15register_deviceERNS0_21device_type_impl_baseE_bti_veneer 1532712: 0964dc40 120 FUNCGLOBAL DEFAULT 14 _ZN3emu6detail16device_registrar15register_deviceERNS0_21device_type_impl_baseE $ objdump -d mame |grep -A5 '_ZN3emu6detail16device_registrar15register_deviceERNS0_21device_type_impl_baseE_bti_veneer>:' 084323c8 <___ZN3emu6detail16device_registrar15register_deviceERNS0_21device_type_impl_baseE_bti_veneer>: 84323c8: 9010adrpx16, 8432000 <___ZN24device_execute_interface7suspendEjb_bti_veneer+0x10> 84323cc: 910f2210add x16, x16, #0x3c8 84323d0: d61f0200br x16 ... $ objdump -d mame |grep -A4 '_ZN3emu6detail16device_registrar15register_deviceERNS0_21device_type_impl_baseE>:' 0c35b570 <_ZN3emu6detail16device_registrar15register_deviceERNS0_21device_type_impl_baseE>: c35b570: d503245fbti c c35b574: b0045701adrpx1, 14e3c000 <_ZN34option_guide_impl_dsk_option_guideL6actualE+0x10> c35b578: d503233fpaciasp c35b57c: a9bf7bfdstp x29, x30, [sp, #-16]! this is broken in multiple ways: - there is no *_veneer, only *_bti_veneer and - *_bti_veneer is global symbol (not local) - the code of the bti veneer is not the expected "bti c; b target" but an adrp veneer that calls itself. - bti veneer should not be emitted as the target has bti (opened bug 30957 ) and - '_veneer' and '_bti_veneer' are attached to the symbol version instead of the symbol (not sure yet if this causes problems), e.g.: 005775b8 <___ZNSirsERi@@GLIBCXX_3.4_bti_veneer>: 5775b8: d503245fbti c 5775bc: 17ffedbdb 572cb0 <_ZNSirsERi@plt> (it will take a few more days for me before i can look at it so i record the issues in case somebody else has an idea what's going on) -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/30930] Broken BTI veneers: ld-2.41 links mame in a way which gets stuck on aarch64
https://sourceware.org/bugzilla/show_bug.cgi?id=30930 --- Comment #26 from Szabolcs Nagy --- (In reply to Szabolcs Nagy from comment #25) > - *_bti_veneer is global symbol (not local) sorry this is wrong, the sym binding is local as expected. -- You are receiving this mail because: You are on the CC list for the bug.
