diff options
Diffstat (limited to 'StdLib/Include/X64/machine/fpu.h')
| -rw-r--r-- | StdLib/Include/X64/machine/fpu.h | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/StdLib/Include/X64/machine/fpu.h b/StdLib/Include/X64/machine/fpu.h deleted file mode 100644 index b463062f31..0000000000 --- a/StdLib/Include/X64/machine/fpu.h +++ /dev/null @@ -1,103 +0,0 @@ -/* $NetBSD: fpu.h,v 1.1 2003/04/26 18:39:40 fvdl Exp $ */
-
-#ifndef _AMD64_FPU_H_
-#define _AMD64_FPU_H_
-
-/*
- * NetBSD/amd64 only uses the extended save/restore format used
- * by fxsave/fsrestore, to always deal with the SSE registers,
- * which are part of the ABI to pass floating point values.
- * Must be stored in memory on a 16-byte boundary.
- */
-
-struct fxsave64 {
- u_int16_t fx_fcw;
- u_int16_t fx_fsw;
- u_int8_t fx_ftw;
- u_int8_t fx_unused1;
- u_int16_t fx_fop;
- u_int64_t fx_rip;
- u_int64_t fx_rdp;
- u_int32_t fx_mxcsr;
- u_int32_t fx_mxcsr_mask;
- u_int64_t fx_st[8][2]; /* 8 normal FP regs */
- u_int64_t fx_xmm[16][2]; /* 16 SSE2 registers */
- u_int8_t fx_unused3[96];
-} __attribute__((packed));
-
-struct savefpu {
- struct fxsave64 fp_fxsave; /* see above */
- u_int16_t fp_ex_sw; /* saved status from last exception */
- u_int16_t fp_ex_tw; /* saved tag from last exception */
-};
-
-#ifdef _KERNEL
-
-/*
- * This one only used for backward compat coredumping.
- */
-struct oldfsave {
- u_int16_t fs_control;
- u_int16_t fs_unused0;
- u_int16_t fs_status;
- u_int16_t fs_unused1;
- u_int16_t fs_tag;
- u_int16_t fs_unused2;
- u_int32_t fs_ipoff;
- u_int16_t fs_ipsel;
- u_int16_t fs_op;
- u_int32_t fs_opoff;
- u_int16_t fs_opsel;
-} __attribute__ ((packed));
-
-#endif
-
-
-/*
- * The i387 defaults to Intel extended precision mode and round to nearest,
- * with all exceptions masked.
- */
-#define __INITIAL_NPXCW__ 0x037f
-#define __INITIAL_MXCSR__ 0x1f80
-#define __INITIAL_MXCSR_MASK__ 0xffbf
-
-/* NetBSD uses IEEE double precision. */
-#define __NetBSD_NPXCW__ 0x127f
-/* Linux just uses the default control word. */
-#define __Linux_NPXCW__ 0x037f
-
-/*
- * The standard control word from finit is 0x37F, giving:
- * round to nearest
- * 64-bit precision
- * all exceptions masked.
- *
- * Now we want:
- * affine mode (if we decide to support 287's)
- * round to nearest
- * 53-bit precision
- * all exceptions masked.
- *
- * 64-bit precision often gives bad results with high level languages
- * because it makes the results of calculations depend on whether
- * intermediate values are stored in memory or in FPU registers.
- */
-
-#ifdef _KERNEL
-/*
- * XXX
- */
-struct trapframe;
-struct cpu_info;
-
-void fpuinit(struct cpu_info *);
-void fpudrop(void);
-void fpusave(struct lwp *);
-void fpudiscard(struct lwp *);
-void fputrap(struct trapframe *);
-void fpusave_lwp(struct lwp *, int);
-void fpusave_cpu(struct cpu_info *, int);
-
-#endif
-
-#endif /* _AMD64_FPU_H_ */
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