Re: regression with binutils 2.28 for ppc

[Waldemar Brodkorb <wbx@openadk.org>]

Hi Peter,
Peter Bergner wrote,

> On 2/16/22 8:32 AM, Peter Bergner via Binutils wrote:
> > On 2/16/22 7:35 AM, Waldemar Brodkorb wrote:
> >> since commit b25f942e18d6ecd7ec3e2d2e9930eb4f996c258a I am getting
> >> following error when building a Linux Kernel targeting
> >> qemu-system-ppc (-M macppc).
> >>
> >> {standard input}: Assembler messages:
> >> {standard input}:2156: Error: unrecognized opcode: `ptesync'
> 
> The commit you mention is Alan's fix for sticky bits.
> His commit message mentions the change will probably expose
> broken .machine usage, so I'm guessing this will end up being
> a kernel issue.

Yeah, I mean 2.38 not 2.28.
The gcc command used to compile the problematic file is:

  /home/wbx/embedded-test/openadk/toolchain_qemu-ppc-macppc_uclibc-ng_hard/usr/bin/ppc-openadk-linux-uclibc-gcc
  -Wp,-MMD,arch/powerpc/lib/.sstep.o.d -nostdinc
  -I./arch/powerpc/include -I./arch/powerpc/include/gen
  erated  -I./include -I./arch/powerpc/include/uapi
  -I./arch/powerpc/include/generated/uapi -I./include/uapi
  -I./include/generated/uapi -include
  ./include/linux/compiler-version.h -include
  ./include/linux/kconfig.h
   -include ./include/linux/compiler_types.h -D__KERNEL__ -I
   ./arch/powerpc -fmacro-prefix-map=./= -Wall -Wundef
   -Werror=strict-prototypes -Wno-trigraphs -fno-strict-aliasing
   -fno-common -fshort-wchar -fno-PIE -Wer
   ror=implicit-function-declaration -Werror=implicit-int
   -Werror=return-type -Wno-format-security -std=gnu89 -mcpu=powerpc
   -mcpu=powerpc -mbig-endian -m32 -msoft-float -pipe -ffixed-r2
   -mmultiple -mno-readonly-in-s
   data -mcpu=powerpc64 -mno-altivec -mno-vsx
   -fno-asynchronous-unwind-tables -mno-string -Wa,-maltivec
   -mbig-endian -fno-delete-null-pointer-checks -Wno-frame-address
   -Wno-format-truncation -Wno-format-overflow -Wn
   o-address-of-packed-member -Os -fno-allow-store-data-races
   -Wframe-larger-than=1024 -fno-stack-protector
   -Wimplicit-fallthrough=5 -Wno-main -Wno-unused-but-set-variable
   -Wno-unused-const-variable -fomit-frame-poi
   nter -fno-stack-clash-protection -Wdeclaration-after-statement
   -Wvla -Wno-pointer-sign -Wcast-function-type
   -Wno-stringop-truncation -Wno-zero-length-bounds
   -Wno-array-bounds -Wno-stringop-overflow -Wno-restrict 
   -Wno-maybe-uninitialized -Wno-alloc-size-larger-than
   -fno-strict-overflow -fno-stack-check -fconserve-stack
   -Werror=date-time -Werror=incompatible-pointer-types
   -Werror=designated-init -Wno-packed-not-aligned -We
   rror    -DKBUILD_MODFILE='"arch/powerpc/lib/sstep"'
   -DKBUILD_BASENAME='"sstep"' -DKBUILD_MODNAME='"sstep"'
   -D__KBUILD_MODNAME=kmod_sstep -c -o arch/powerpc/lib/sstep.o
   arch/powerpc/lib/sstep.c 

It works fine with binutils 2.37.

   best regards
    Waldemar