db9712052c
* Mon Jan 24 2022 Florian Weimer <fweimer@redhat.com> - 2.34-21 - Sync with upstream branch release/2.34/master, commit 3438bbca90895d32825a52e31a77dc44d273c1c1: - Linux: Detect user namespace support in io/tst-getcwd-smallbuff - realpath: Avoid overwriting preexisting error - CVE-2021-3999: getcwd: Set errno to ERANGE for size == 1 - tst-realpath-toolong: Fix hurd build - CVE-2021-3998: realpath: ENAMETOOLONG for result larger than PATH_MAX - stdlib: Fix formatting of tests list in Makefile - stdlib: Sort tests in Makefile - support: Add helpers to create paths longer than PATH_MAX - powerpc: Fix unrecognized instruction errors with recent binutils - x86: use default cache size if it cannot be determined [BZ #28784] - CVE-2022-23218: Buffer overflow in sunrpc svcunix_create (bug 28768) - sunrpc: Test case for clnt_create "unix" buffer overflow (bug 22542) - CVE-2022-23219: Buffer overflow in sunrpc clnt_create for "unix" (bug 22542) - socket: Add the __sockaddr_un_set function - Disable debuginfod in printer tests [BZ #28757] - Update syscall lists for Linux 5.16 Resolves: #2032279 Resolves: #2032276
65 lines
2.6 KiB
Diff
65 lines
2.6 KiB
Diff
commit 82b1acd9de9796298a230d7484f26fe9a7756d18
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Author: Paul A. Clarke <pc@us.ibm.com>
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Date: Sat Sep 25 09:57:15 2021 -0500
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powerpc: Fix unrecognized instruction errors with recent binutils
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Recent versions of binutils (with commit
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b25f942e18d6ecd7ec3e2d2e9930eb4f996c258a) stopped preserving "sticky"
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options across a base `.machine` directive, nullifying the use of
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passing "-many" through GCC to the assembler. As a result, some
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instructions which were recognized even under older, more stringent
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`.machine` directives become unrecognized instructions in that
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context.
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In `sysdeps/powerpc/tst-set_ppr.c`, the use of the `mfppr32` extended
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mnemonic became unrecognized, as the default compilation with GCC for
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32bit powerpc adds a `.machine ppc` in the resulting assembly, so the
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command line option `-Wa,-many` is essentially ignored, and the ISA 2.06
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instructions and mnemonics, like `mfppr32`, are unrecognized.
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The compilation of `sysdeps/powerpc/tst-set_ppr.c` fails with:
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Error: unrecognized opcode: `mfppr32'
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Add appropriate `.machine` directives in the assembly to bracket the
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`mfppr32` instruction.
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Part of a 2019 fix (commit 9250e6610fdb0f3a6f238d2813e319a41fb7a810) to
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the above test's Makefile to add `-many` to the compilation when GCC
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itself stopped passing `-many` to the assember no longer has any effect,
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so remove that.
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Reported-by: Joseph Myers <joseph@codesourcery.com>
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(cherry picked from commit ee874f44fd55988808a4a162ef21bfa2cc8dc6f7)
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diff --git a/sysdeps/powerpc/Makefile b/sysdeps/powerpc/Makefile
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index 09860ffc0155d765..5e6cb07ce66decfa 100644
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--- a/sysdeps/powerpc/Makefile
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+++ b/sysdeps/powerpc/Makefile
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@@ -61,11 +61,6 @@ ifeq ($(subdir),misc)
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sysdep_headers += sys/platform/ppc.h
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tests += test-gettimebase
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tests += tst-set_ppr
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-
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-# This test is expected to run and exit with EXIT_UNSUPPORTED on
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-# processors that do not implement the Power ISA 2.06 or greater.
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-# But the test makes use of instructions from Power ISA 2.06 and 2.07.
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-CFLAGS-tst-set_ppr.c += -Wa,-many
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endif
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ifeq ($(subdir),wcsmbs)
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diff --git a/sysdeps/powerpc/tst-set_ppr.c b/sysdeps/powerpc/tst-set_ppr.c
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index 7684f5d6ea905c60..e80da15320635585 100644
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--- a/sysdeps/powerpc/tst-set_ppr.c
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+++ b/sysdeps/powerpc/tst-set_ppr.c
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@@ -44,7 +44,8 @@ get_thread_priority (void)
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{
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/* Read the PPR. */
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ppr_t ppr;
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- asm volatile (MFPPR" %0" : "=r"(ppr));
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+ asm volatile (".machine push; .machine power7; "MFPPR" %0; .machine pop"
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+ : "=r"(ppr));
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/* Return the thread priority value. */
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return EXTRACT_THREAD_PRIORITY (ppr);
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}
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