MIPS: math-emu: Add support for the MIPS R6 MSUBF FPU instruction
MIPS R6 introduced the following instruction:
Floating Point Fused Multiply Subtract:
MSUBF.fmt To perform a fused multiply-subtract of FP values.
MSUBF.fmt: FPR[fd] = FPR[fd] - (FPR[fs] x FPR[ft])
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10957/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/math-emu/ieee754.h b/arch/mips/math-emu/ieee754.h
index 4e025f9..8c78019 100644
--- a/arch/mips/math-emu/ieee754.h
+++ b/arch/mips/math-emu/ieee754.h
@@ -77,6 +77,8 @@
union ieee754sp ieee754sp_maddf(union ieee754sp z, union ieee754sp x,
union ieee754sp y);
+union ieee754sp ieee754sp_msubf(union ieee754sp z, union ieee754sp x,
+ union ieee754sp y);
/*
* double precision (often aka double)
@@ -104,6 +106,8 @@
union ieee754dp ieee754dp_maddf(union ieee754dp z, union ieee754dp x,
union ieee754dp y);
+union ieee754dp ieee754dp_msubf(union ieee754dp z, union ieee754dp x,
+ union ieee754dp y);
/* 5 types of floating point number