Files
linux/arch/mips/include/asm
Paul Burton 7f5eb098ef MIPS: End asm function prologue macros with .insn
[ Upstream commit 08889582b8 ]

When building a kernel targeting a microMIPS ISA, recent GNU linkers
will fail the link if they cannot determine that the target of a branch
or jump is microMIPS code, with errors such as the following:

    mips-img-linux-gnu-ld: arch/mips/built-in.o: .text+0x542c:
    Unsupported jump between ISA modes; consider recompiling with
    interlinking enabled.
    mips-img-linux-gnu-ld: final link failed: Bad value

or:

    ./arch/mips/include/asm/uaccess.h:1017: warning: JALX to a
    non-word-aligned address

Placing anything other than an instruction at the start of a function
written in assembly appears to trigger such errors. In order to prepare
for allowing us to follow function prologue macros with an EXPORT_SYMBOL
invocation, end the prologue macros (LEAD, NESTED & FEXPORT) with a
.insn directive. This ensures that the start of the function is marked
as code, which always makes sense for functions & safely prevents us
from hitting the link errors described above.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14508/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-21 09:21:22 +01:00
..
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2015-06-21 21:52:44 +02:00
2014-08-26 02:18:58 +02:00
2013-02-01 10:00:22 +01:00
2013-05-08 03:51:58 +02:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2015-11-11 08:36:36 +01:00
2014-01-22 20:19:02 +01:00
2009-12-05 09:10:12 -08:00
2015-05-13 10:55:42 +02:00
2013-02-01 10:00:22 +01:00
2015-11-12 11:35:47 +01:00
2015-08-26 15:23:03 +02:00
2015-09-22 21:11:05 +02:00
2013-02-01 10:00:22 +01:00
2009-07-03 15:45:29 +01:00
2013-01-24 13:20:09 +01:00
2015-05-28 15:31:53 +02:00
2015-11-11 08:36:36 +01:00
2014-08-26 02:18:56 +02:00
2012-03-28 18:30:02 +01:00
2014-05-24 00:07:01 +02:00
2013-02-01 10:00:22 +01:00
2015-09-03 12:08:05 +02:00
2013-02-01 10:00:22 +01:00
2011-07-26 16:49:47 -07:00
2015-06-21 21:54:29 +02:00
2015-10-06 13:19:25 +02:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2015-09-03 12:08:05 +02:00
2012-12-13 16:46:47 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2014-05-24 00:07:01 +02:00
2013-02-01 10:00:22 +01:00
2016-03-03 15:07:17 -08:00
2014-08-02 00:06:38 +02:00
2013-02-01 10:00:22 +01:00
2014-01-22 20:19:02 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2017-04-12 12:38:35 +02:00
2013-02-01 10:00:22 +01:00
2016-06-07 18:14:30 -07:00
2015-09-03 12:08:05 +02:00
2011-12-07 22:01:45 +00:00
2013-02-01 10:00:22 +01:00
2013-02-01 10:00:22 +01:00
2013-09-18 17:13:58 +02:00
2013-02-01 10:00:22 +01:00
2016-06-07 18:14:30 -07:00