1 files changed, 38 insertions, 7 deletions

diff --git a/arch/mips/include/asm/processor.h b/arch/mips/include/asm/processor.h
index 3605b844ad87..ad70cba8daff 100644
--- a/arch/mips/include/asm/processor.h
+++ b/arch/mips/include/asm/processor.h
@@ -97,18 +97,48 @@ extern unsigned int vced_count, vcei_count;
 
 #define NUM_FPU_REGS    32
 
-typedef __u64 fpureg_t;
+#ifdef CONFIG_CPU_HAS_MSA
+# define FPU_REG_WIDTH  128
+#else
+# define FPU_REG_WIDTH  64
+#endif
+
+union fpureg {
+        __u32   val32[FPU_REG_WIDTH / 32];
+        __u64   val64[FPU_REG_WIDTH / 64];
+};
+
+#ifdef CONFIG_CPU_LITTLE_ENDIAN
+# define FPR_IDX(width, idx)    (idx)
+#else
+# define FPR_IDX(width, idx)    ((FPU_REG_WIDTH / (width)) - 1 - (idx))
+#endif
+
+#define BUILD_FPR_ACCESS(width) \
+static inline u##width get_fpr##width(union fpureg *fpr, unsigned idx)  \
+{                                                                       \
+        return fpr->val##width[FPR_IDX(width, idx)];                    \
+}                                                                       \
+                                                                        \
+static inline void set_fpr##width(union fpureg *fpr, unsigned idx,      \
+                                  u##width val)                         \
+{                                                                       \
+        fpr->val##width[FPR_IDX(width, idx)] = val;                     \
+}
+
+BUILD_FPR_ACCESS(32)
+BUILD_FPR_ACCESS(64)
 
 /*
- * It would be nice to add some more fields for emulator statistics, but there
- * are a number of fixed offsets in offset.h and elsewhere that would have to
- * be recalculated by hand.  So the additional information will be private to
- * the FPU emulator for now.  See asm-mips/fpu_emulator.h.
+ * It would be nice to add some more fields for emulator statistics,
+ * the additional information is private to the FPU emulator for now.
+ * See arch/mips/include/asm/fpu_emulator.h.
  */
 
 struct mips_fpu_struct {
-        fpureg_t        fpr[NUM_FPU_REGS];
+        union fpureg    fpr[NUM_FPU_REGS];
         unsigned int    fcr31;
+        unsigned int    msacsr;
 };
 
 #define NUM_DSP_REGS   6
@@ -284,8 +314,9 @@ struct thread_struct {
          * Saved FPU/FPU emulator stuff                         \
          */                                                     \
         .fpu                    = {                             \
-                .fpr            = {0,},                         \
+                .fpr            = {{{0,},},},                   \
                 .fcr31          = 0,                            \
+                .msacsr         = 0,                            \
         },                                                      \
         /*                                                      \
          * FPU affinity state (null if not FPAFF)               \