xnu-2050.18.24.tar.gz

[apple/xnu.git] / osfmk / i386 / fpu.h

diff --git a/osfmk/i386/fpu.h b/osfmk/i386/fpu.h
index a053bd56c83680ca2eda074c7cf656b1bc94626d..5b0658f60ab99c10f61224a6b4db219f0d72ea29 100644 (file)
--- a/osfmk/i386/fpu.h
+++ b/osfmk/i386/fpu.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -54,9 +54,6 @@
  * the rights to redistribute these changes.
  */
 
-/*
- */
-
 #ifndef        _I386_FPU_H_
 #define        _I386_FPU_H_
 
@@ -64,103 +61,50 @@
  * Macro definitions for routines to manipulate the
  * floating-point processor.
  */
-
-#include <i386/proc_reg.h>
-#include <i386/thread.h>
+#include <kern/thread.h>
 #include <kern/kern_types.h>
 #include <mach/i386/kern_return.h>
 #include <mach/i386/thread_status.h>
+#include <i386/proc_reg.h>
+#include <i386/thread.h>
 
-/*
- * FPU instructions.
- */
-#define        fninit() \
-       __asm__ volatile("fninit")
-
-#define        fnstcw(control) \
-       __asm__("fnstcw %0" : "=m" (*(unsigned short *)(control)))
-
-#define        fldcw(control) \
-       __asm__ volatile("fldcw %0" : : "m" (*(unsigned short *) &(control)) )
-
-extern unsigned short          fnstsw(void);
-
-extern __inline__ unsigned short fnstsw(void)
-{
-       unsigned short status;
-       __asm__ volatile("fnstsw %0" : "=ma" (status));
-       return(status);
-}
-
-#define        fnclex() \
-       __asm__ volatile("fnclex")
-
-#define        fnsave(state)  \
-       __asm__ volatile("fnsave %0" : "=m" (*state))
-
-#define        frstor(state) \
-       __asm__ volatile("frstor %0" : : "m" (state))
-
-#define fwait() \
-       __asm__("fwait");
-
-#define fxrstor(addr)           __asm("fxrstor %0" : : "m" (*(addr)))     
-#define fxsave(addr)            __asm __volatile("fxsave %0" : "=m" (*(addr)))
-
-#define FXSAFE() (fp_kind == FP_FXSR)
-
-#define        fpu_load_context(pcb)
-
-/*
- * Save thread`s FPU context.
- * If only one CPU, we just set the task-switched bit,
- * to keep the new thread from using the coprocessor.
- * If multiple CPUs, we save the entire state.
- * NOTE: in order to provide backwards compatible support in the kernel. When saving SSE2 state, we also save the
- * FP state in it's old location. Otherwise fpu_get_state() and fpu_set_state() will stop working
- */
-#define        fpu_save_context(thread) \
-    { \
-       register struct i386_fpsave_state *ifps; \
-       ifps = (thread)->machine.pcb->ims.ifps; \
-       if (ifps != 0 && !ifps->fp_valid) { \
-           /* registers are in FPU - save to memory */ \
-           ifps->fp_valid = TRUE; \
-            ifps->fp_save_flavor = FP_387; \
-            if (FXSAFE()) { \
-               fxsave(&ifps->fx_save_state); \
-                ifps->fp_save_flavor = FP_FXSR; \
-           } \
-            fnsave(&ifps->fp_save_state); \
-       } \
-       set_ts(); \
-    }
-           
-
+typedef        enum {
+               FXSAVE32 = 1,
+               FXSAVE64 = 2,
+               XSAVE32  = 3,
+               XSAVE64  = 4,
+               FP_UNUSED = 5
+       } fp_save_layout_t;
 
-extern int     fp_kind;
+extern int             fp_kind;
 
 extern void            init_fpu(void);
 extern void            fpu_module_init(void);
 extern void            fpu_free(
-                               struct i386_fpsave_state        * fps);
-extern kern_return_t   fpu_set_state(
-                               thread_t                        thr_act,
-                               struct i386_float_state         * st);
-extern kern_return_t   fpu_get_state(
-                               thread_t                        thr_act,
-                               struct i386_float_state         * st);
+                               void    * fps);
 extern kern_return_t   fpu_set_fxstate(
-                               thread_t                        thr_act,
-                               struct i386_float_state         * st);
+                               thread_t        thr_act,
+                               thread_state_t  state,
+                               thread_flavor_t f);
 extern kern_return_t   fpu_get_fxstate(
-                               thread_t                        thr_act,
-                               struct i386_float_state         * st);
+                               thread_t        thr_act,
+                               thread_state_t  state,
+                               thread_flavor_t f);
+extern void            fpu_dup_fxstate(
+                               thread_t        parent,
+                               thread_t        child);
 extern void            fpnoextflt(void);
 extern void            fpextovrflt(void);
 extern void            fpexterrflt(void);
-extern void            fp_state_alloc(void);
-extern void            fpintr(void);
+extern void            fpSSEexterrflt(void);
 extern void            fpflush(thread_t);
+extern void            fp_setvalid(boolean_t);
+#ifdef __i386__
+extern void            fxsave64(struct x86_fx_thread_state *);
+extern void            fxrstor64(struct x86_fx_thread_state *);
+#endif
+
+extern void clear_fpu(void);
+extern void fpu_save_context(thread_t thread);
 
 #endif /* _I386_FPU_H_ */