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 <[email protected]> Cc: Maciej W. Rozycki <[email protected]> Cc: <[email protected]> # v3.15+ Signed-off-by: Markos Chandras <[email protected]> --- Moving this out of the R6 patchset as requested by Maciej --- arch/mips/include/asm/asmmacro.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h index fe08084f5adb..42b90c9fd756 100644 --- a/arch/mips/include/asm/asmmacro.h +++ b/arch/mips/include/asm/asmmacro.h @@ -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 -- 2.2.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
