[Bug ld/27905] New: qemu: ./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d): relocation
https://sourceware.org/bugzilla/show_bug.cgi?id=27905 Bug ID: 27905 Summary: qemu: ./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d) : relocation Product: binutils Version: 2.37 (HEAD) Status: UNCONFIRMED Severity: normal Priority: P2 Component: ld Assignee: unassigned at sourceware dot org Reporter: mliska at suse dot cz Target Milestone: --- Created attachment 13467 --> https://sourceware.org/bugzilla/attachment.cgi?id=13467&action=edit reproducer The issue happens since: commit a7664973b24a242cd9ea17deb5eaf503065fc0bd (HEAD, refs/bisect/bad) Author: Jan Beulich Date: Mon Apr 26 10:41:35 2021 +0200 x86: correct overflow checking for 16-bit PC-relative relocs I discussed that briefly with Jan in a private email thread. Steps to reproduce: $ gcc -I. -I/home/abuild/rpmbuild/BUILD/qemu-6.0.0/roms/seabios/builds/seabios-256k/ -Isrc -Os -MD -g -Wall -Wno-strict-aliasing -Wold-style-definition -Wtype-limits -m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 -minline-all-stringops -fomit-frame-pointer -freg-struct-return -ffreestanding -fno-delete-null-pointer-checks -ffunction-sections -fdata-sections -fno-common -fno-merge-constants -fno-pie -fno-stack-protector -fstack-check=no -Wno-address-of-packed-member -fcf-protection=none -Wa,-mx86-used-note=no -DMODESEGMENT=1 -fno-defer-pop -fno-jump-tables -fno-tree-switch-conversion -DMODE16=1 -m16 --param large-stack-frame=4 -fwhole-program -DWHOLE_PROGRAM -c ccode16.i && ld -melf_i386 -r ccode16.o romlayout.o -o code16.o && /home/marxin/Programming/binutils/objdir/ld/ld-new -T rom.lds code16.o ... code16.o: in function `mpt_scsi_process_op': /home/abuild/rpmbuild/BUILD/qemu-6.0.0/roms/seabios/./src/hw/mpt-scsi.c:188:(.text.mpt_scsi_process_op+0x3a): relocation truncated to fit: R_386_PC16 against `.text.default_process_op.isra.0' code16.o: in function `megasas_process_op': /home/abuild/rpmbuild/BUILD/qemu-6.0.0/roms/seabios/./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d): relocation truncated to fit: R_386_PC16 against `.text.default_process_op.isra.0' code16.o: in function `handle_hwpic2': /home/abuild/rpmbuild/BUILD/qemu-6.0.0/roms/seabios/./src/hw/pic.c:114:(.text.handle_hwpic2+0x1): relocation truncated to fit: R_386_PC16 against `.text.pic_eoi2' -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27905] qemu: ./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d): relocation
https://sourceware.org/bugzilla/show_bug.cgi?id=27905 Martin Liska changed: What|Removed |Added CC||hjl at sourceware dot org, ||jbeulich at suse dot com -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27905] qemu: ./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d): relocation
https://sourceware.org/bugzilla/show_bug.cgi?id=27905 H.J. Lu changed: What|Removed |Added Last reconfirmed||2021-05-24 Status|UNCONFIRMED |NEW Ever confirmed|0 |1 --- Comment #1 from H.J. Lu --- The problem is that ELF32 is used as a container for 16-bit program which caused the problem when building 16-bit program. I can extend commit 4c10bbaa0912742322f10d9d5bb630ba4e15dfa7 Author: H.J. Lu Date: Tue Mar 15 11:07:06 2016 -0700 Add -z noreloc-overflow option to x86-64 ld Add -z noreloc-overflow command-line option to the x86-64 ELF linker to disable relocation overflow check. This can be used to avoid relocation overflow check if there will be no dynamic relocation overflow at run-time. to i386. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27905] qemu: ./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d): relocation
https://sourceware.org/bugzilla/show_bug.cgi?id=27905 H.J. Lu changed: What|Removed |Added CC|hjl at sourceware dot org |hjl.tools at gmail dot com -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27905] qemu: ./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d): relocation
https://sourceware.org/bugzilla/show_bug.cgi?id=27905
--- Comment #2 from H.J. Lu ---
[hjl@gnu-cfl-2 pr27905]$ cat rom.s
.code16gcc
.text
.section.text.default_process_op.isra.0,"ax",@progbits
.type default_process_op.isra.0, @function
default_process_op.isra.0:
ret
.section.text.mpt_scsi_process_op,"ax",@progbits
.type mpt_scsi_process_op, @function
mpt_scsi_process_op:
jmp default_process_op.isra.0
[hjl@gnu-cfl-2 pr27905]$ cat rom.lds
OUTPUT_FORMAT("elf32-i386")
OUTPUT_ARCH("i386")
SECTIONS
{
.text.default_process_op.isra.0 0x737c : { *(.text.default_process_op.isra.0) }
.text.mpt_scsi_process_op 0xf869 : { *(.text.mpt_scsi_process_op) }
}
[hjl@gnu-cfl-2 pr27905]$ make rom
gcc -B./ -m32 -c -o rom.o rom.s
ld -o rom -T rom.lds rom.o
rom.o: in function `mpt_scsi_process_op':
(.text.mpt_scsi_process_op+0x1): relocation truncated to fit: R_386_PC16
against `.text.default_process_op.isra.0'
make: *** [Makefile:10: rom] Error 1
[hjl@gnu-cfl-2 pr27905]$
--
You are receiving this mail because:
You are on the CC list for the bug.
[Bug ld/27905] qemu: ./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d): relocation
https://sourceware.org/bugzilla/show_bug.cgi?id=27905 H.J. Lu changed: What|Removed |Added Assignee|unassigned at sourceware dot org |hjl.tools at gmail dot com --- Comment #3 from H.J. Lu --- [hjl@gnu-cfl-2 pr27905]$ readelf -n rom.o Displaying notes found in: .note.gnu.property OwnerData sizeDescription GNU 0x0018 NT_GNU_PROPERTY_TYPE_0 Properties: x86 ISA used: x86 feature used: x86 [hjl@gnu-cfl-2 pr27905]$ We can add code16 to x86 feature used: and update assembler to set it with .code16gcc. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27833] ld-plugin/pr24406-1.c fails with GCC cross-toolchain for arm-none-eabi
https://sourceware.org/bugzilla/show_bug.cgi?id=27833 --- Comment #3 from Dimitar Dimitrov --- Hi Nick, Could you clarify why read() is not part of newlib for ARM? I tested on 3 different newlib targets and I can see that "read" function is part of newlib libc: $ ./bin/arm-none-eabi-nm ./arm-none-eabi/lib/libc.a | grep -w read T read $ ./bin/riscv32-none-elf-nm ./riscv32-none-elf/lib/libc.a | grep -w read T read $ ./bin/pru-nm ./pru/lib/libc.a | grep -w read T read read() seems to be defined here: https://sourceware.org/git/?p=newlib-cygwin.git;a=blob;f=newlib/libc/syscalls/sysread.c Without -flto the test case is successfully linked for all of the 3 targets above. Which is another indication that newlib provides the "read" function. Regards, Dimitar -- You are receiving this mail because: You are on the CC list for the bug.
[Bug gas/27906] New: doc for x86 incorrectly says that movsb is an alias for movsbq
https://sourceware.org/bugzilla/show_bug.cgi?id=27906 Bug ID: 27906 Summary: doc for x86 incorrectly says that movsb is an alias for movsbq Product: binutils Version: 2.37 (HEAD) Status: NEW Severity: normal Priority: P2 Component: gas Assignee: unassigned at sourceware dot org Reporter: sebastien at debian dot org Target Milestone: --- Created attachment 13468 --> https://sourceware.org/bugzilla/attachment.cgi?id=13468&action=edit Patch The documentation (in i386 Dependent features, section “i386-Mnemonics”, file c-i386.texi) says that movsb is an alias for movsbq. However, movsb is a different instruction (byte-sized movs). The intended alias is rather movsxb. A patch is attached for clarity. -- You are receiving this mail because: You are on the CC list for the bug.
Issue 31242 in oss-fuzz: binutils:fuzz_bfd: Timeout in fuzz_bfd
Updates: Labels: -restrict-view-commit -deadline-approaching Deadline-Exceeded Comment #4 on issue 31242 by sheriffbot: binutils:fuzz_bfd: Timeout in fuzz_bfd https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=31242#c4 This bug has exceeded our disclosure deadline. It has been opened to the public. - Your friendly Sheriffbot -- You received this message because: 1. You were specifically CC'd on the issue You may adjust your notification preferences at: https://bugs.chromium.org/hosting/settings Reply to this email to add a comment.
[Bug ld/27905] qemu: ./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d): relocation
https://sourceware.org/bugzilla/show_bug.cgi?id=27905 --- Comment #4 from H.J. Lu --- Update GNU_PROPERTY_X86_FEATURE_2_USED with #define GNU_PROPERTY_X86_FEATURE_2_CODE16 (1U << 12) https://groups.google.com/g/x86-64-abi/c/UvvXWeHIGMA -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/27905] qemu: ./src/hw/megasas.c:168:(.text.megasas_process_op+0x3d): relocation
https://sourceware.org/bugzilla/show_bug.cgi?id=27905 --- Comment #5 from H.J. Lu --- A patch is posted at https://sourceware.org/pipermail/binutils/2021-May/116722.html -- You are receiving this mail because: You are on the CC list for the bug.
