diff options
| author | Stuart Menefy <stuart.menefy@st.com> | 2007-11-30 18:42:27 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-28 13:18:59 +0900 |
| commit | c8c0a1aba9fa8f816dc8fb477ff816a5b700f0ea (patch) | |
| tree | 54329f0b6497be088fc573c67e5541863041fdde /include | |
| parent | 453ec9c1c3808b051347edbbf637f997add7b85b (diff) | |
sh: Support denormalization on SH-4 FPU.
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-sh/cpu-sh4/fpu.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/include/asm-sh/cpu-sh4/fpu.h b/include/asm-sh/cpu-sh4/fpu.h new file mode 100644 index 00000000000..febef734252 --- /dev/null +++ b/include/asm-sh/cpu-sh4/fpu.h @@ -0,0 +1,32 @@ +/* + * linux/arch/sh/kernel/cpu/sh4/sh4_fpu.h + * + * Copyright (C) 2006 STMicroelectronics Limited + * Author: Carl Shaw <carl.shaw@st.com> + * + * May be copied or modified under the terms of the GNU General Public + * License Version 2. See linux/COPYING for more information. + * + * Definitions for SH4 FPU operations + */ + +#ifndef __CPU_SH4_FPU_H +#define __CPU_SH4_FPU_H + +#define FPSCR_ENABLE_MASK 0x00000f80UL + +#define FPSCR_FMOV_DOUBLE (1<<1) + +#define FPSCR_CAUSE_INEXACT (1<<12) +#define FPSCR_CAUSE_UNDERFLOW (1<<13) +#define FPSCR_CAUSE_OVERFLOW (1<<14) +#define FPSCR_CAUSE_DIVZERO (1<<15) +#define FPSCR_CAUSE_INVALID (1<<16) +#define FPSCR_CAUSE_ERROR (1<<17) + +#define FPSCR_DBL_PRECISION (1<<19) +#define FPSCR_ROUNDING_MODE(x) ((x >> 20) & 3) +#define FPSCR_RM_NEAREST (0) +#define FPSCR_RM_ZERO (1) + +#endif |