glibc/sysdeps/powerpc/Makefile
Paul A. Clarke ee874f44fd powerpc: Fix unrecognized instruction errors with recent binutils
Recent versions of binutils (with commit
b25f942e18d6ecd7ec3e2d2e9930eb4f996c258a) stopped preserving "sticky"
options across a base `.machine` directive, nullifying the use of
passing "-many" through GCC to the assembler.  As a result, some
instructions which were recognized even under older, more stringent
`.machine` directives become unrecognized instructions in that
context.

In `sysdeps/powerpc/tst-set_ppr.c`, the use of the `mfppr32` extended
mnemonic became unrecognized, as the default compilation with GCC for
32bit powerpc adds a `.machine ppc` in the resulting assembly, so the
command line option `-Wa,-many` is essentially ignored, and the ISA 2.06
instructions and mnemonics, like `mfppr32`, are unrecognized.

The compilation of `sysdeps/powerpc/tst-set_ppr.c` fails with:
Error: unrecognized opcode: `mfppr32'

Add appropriate `.machine` directives in the assembly to bracket the
`mfppr32` instruction.

Part of a 2019 fix (commit 9250e6610f) to
the above test's Makefile to add `-many` to the compilation when GCC
itself stopped passing `-many` to the assember no longer has any effect,
so remove that.

Reported-by: Joseph Myers <joseph@codesourcery.com>
2021-09-29 14:42:20 -05:00

71 lines
1.9 KiB
Makefile

ifeq ($(subdir),string)
CFLAGS-memcmp.c += -Wno-uninitialized
endif
ifeq ($(subdir),elf)
# extra shared linker files to link into dl-allobjs.so and libc
sysdep-dl-routines += dl-machine hwcapinfo
sysdep_routines += dl-machine hwcapinfo
# extra shared linker files to link only into dl-allobjs.so
sysdep-rtld-routines += dl-machine hwcapinfo
modules-names += mod-tlsopt-powerpc
mod-tlsopt-powerpc.so-no-z-defs = yes
tests += tst-tlsopt-powerpc
$(objpfx)tst-tlsopt-powerpc: $(objpfx)mod-tlsopt-powerpc.so
tests-static += tst-cache-ppc-static
tests-internal += tst-cache-ppc-static
ifeq (yes,$(build-shared))
modules-names += mod-cache-ppc
tests += tst-cache-ppc tst-cache-ppc-static-dlopen
tests-static += tst-cache-ppc-static-dlopen
test-internal-extras += mod-cache-ppc
mod-cache-ppc.so-no-z-defs = yes
tst-cache-ppc-static-dlopen-ENV = LD_LIBRARY_PATH=$(objpfx):$(common-objpfx):$(common-objpfx)elf
$(objpfx)tst-cache-ppc-static-dlopen.out: $(objpfx)mod-cache-ppc.so
$(objpfx)tst-cache-ppc: $(objpfx)mod-cache-ppc.so
endif
ifneq (no,$(multi-arch))
tests-static += tst-tlsifunc-static
tests-internal += tst-tlsifunc-static
ifeq (yes,$(build-shared))
tests-internal += tst-tlsifunc
endif # build-shared
endif # multi-arch
endif # subdir = elf
ifeq ($(subdir),setjmp)
ifeq (yes,$(build-shared))
sysdep_routines += novmx-longjmp novmx-sigjmp
endif
endif
ifeq ($(subdir),csu)
# get offset to rtld_global._dl_hwcap and rtld_global._dl_hwcap2
gen-as-const-headers += rtld-global-offsets.sym
# get offset to __locale_struct.__ctype_tolower
gen-as-const-headers += locale-defines.sym
endif
ifeq ($(subdir),nptl)
tests-internal += test-get_hwcap test-get_hwcap-static
tests-static += test-get_hwcap-static
endif
ifeq ($(subdir),misc)
sysdep_headers += sys/platform/ppc.h
tests += test-gettimebase
tests += tst-set_ppr
endif
ifeq ($(subdir),wcsmbs)
CFLAGS-wcscpy.c += -DUNROLL_NTIMES=8
CFLAGS-wcschr.c += -DUNROLL_NTIMES=8
CFLAGS-wcsrchr.c += -DUNROLL_NTIMES=8
endif