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MIPS: asm: asmmacro: Replace "add" instructions with "addu"

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The "add" instruction is actually a macro in binutils and depending on
the size of the immediate it can expand to an "addi" instruction.
However, the "addi" instruction traps on overflows which is not
something we want on address calculation.

Link: http://www.linux-mips.org/archives/linux-mips/2015-01/msg00121.html
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
This commit is contained in:
Markos Chandras 2014-11-05 14:17:52 +00:00
parent 226da55f48
commit 98a833c1fa
1 changed files with 2 additions and 2 deletions
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4
arch/mips/include/asm/asmmacro.h
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@ -304,7 +304,7 @@
.set push
.set noat
SET_HARDFLOAT
add $1, \base, \off
addu $1, \base, \off
.word LDD_MSA_INSN | (\wd << 6)
.set pop
.endm
@ -313,7 +313,7 @@
.set push
.set noat
SET_HARDFLOAT
add $1, \base, \off
addu $1, \base, \off
.word STD_MSA_INSN | (\wd << 6)
.set pop
.endm