From 50b80a12e4ccff46d53b93754d817acd98bc9ae0 Mon Sep 17 00:00:00 2001 From: Jordan Niethe Date: Wed, 6 May 2020 13:40:49 +1000 Subject: powerpc sstep: Add support for prefixed load/stores This adds emulation support for the following prefixed integer load/stores: * Prefixed Load Byte and Zero (plbz) * Prefixed Load Halfword and Zero (plhz) * Prefixed Load Halfword Algebraic (plha) * Prefixed Load Word and Zero (plwz) * Prefixed Load Word Algebraic (plwa) * Prefixed Load Doubleword (pld) * Prefixed Store Byte (pstb) * Prefixed Store Halfword (psth) * Prefixed Store Word (pstw) * Prefixed Store Doubleword (pstd) * Prefixed Load Quadword (plq) * Prefixed Store Quadword (pstq) the follow prefixed floating-point load/stores: * Prefixed Load Floating-Point Single (plfs) * Prefixed Load Floating-Point Double (plfd) * Prefixed Store Floating-Point Single (pstfs) * Prefixed Store Floating-Point Double (pstfd) and for the following prefixed VSX load/stores: * Prefixed Load VSX Scalar Doubleword (plxsd) * Prefixed Load VSX Scalar Single-Precision (plxssp) * Prefixed Load VSX Vector [0|1] (plxv, plxv0, plxv1) * Prefixed Store VSX Scalar Doubleword (pstxsd) * Prefixed Store VSX Scalar Single-Precision (pstxssp) * Prefixed Store VSX Vector [0|1] (pstxv, pstxv0, pstxv1) Signed-off-by: Jordan Niethe Reviewed-by: Balamuruhan S [mpe: Use CONFIG_PPC64 not __powerpc64__, use get_op()] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200506034050.24806-30-jniethe5@gmail.com --- arch/powerpc/include/asm/sstep.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/powerpc/include/asm/sstep.h') diff --git a/arch/powerpc/include/asm/sstep.h b/arch/powerpc/include/asm/sstep.h index c3ce903ac488..9b200a5f8794 100644 --- a/arch/powerpc/include/asm/sstep.h +++ b/arch/powerpc/include/asm/sstep.h @@ -90,11 +90,15 @@ enum instruction_type { #define VSX_LDLEFT 4 /* load VSX register from left */ #define VSX_CHECK_VEC 8 /* check MSR_VEC not MSR_VSX for reg >= 32 */ +/* Prefixed flag, ORed in with type */ +#define PREFIXED 0x800 + /* Size field in type word */ #define SIZE(n) ((n) << 12) #define GETSIZE(w) ((w) >> 12) #define GETTYPE(t) ((t) & INSTR_TYPE_MASK) +#define GETLENGTH(t) (((t) & PREFIXED) ? 8 : 4) #define MKOP(t, f, s) ((t) | (f) | SIZE(s)) -- cgit v1.2.3