78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
#ident "include/sys/fpu.h: $Revision: 1.5 $"
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/*
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* fpu.h -- floating point coprocessor specific defines
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*/
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#define FPREV_REVISION_MASK 0xff
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#define FPREV_IMPLEMENTATION_MASK 0xff00
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/* FPU co-processor definitions
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*/
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#if defined(_LANGUAGE_ASSEMBLY)
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# define __C1REG__(x) $x
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#else
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# define __C1REG__(x) x
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#endif
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#define C1_F0 __C1REG__(0)
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#define C1_F1 __C1REG__(1)
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#define C1_STATUS __C1REG__(31)
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#define RN 0
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#define RZ 1
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#define RP 2
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#define RM 3
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#define FP_COND 0x00800000
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/* Exception bits */
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#define FP_EXC 0x0003f000
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#define FP_EXC_E 0x00020000
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#define FP_EXC_V 0x00010000
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#define FP_EXC_Z 0x00008000
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#define FP_EXC_O 0x00004000
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#define FP_EXC_U 0x00002000
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#define FP_EXC_I 0x00001000
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/* Enables */
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#define FP_ENABLE 0x00000f80
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#define FP_EN_V 0x00000800
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#define FP_EN_Z 0x00000400
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#define FP_EN_O 0x00000200
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#define FP_EN_U 0x00000100
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#define FP_EN_I 0x00000080
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/* Sticky bits */
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#define FP_STKY 0x0000007c
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#define FP_STKY_V 0x00000040
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#define FP_STKY_Z 0x00000020
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#define FP_STKY_O 0x00000010
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#define FP_STKY_U 0x00000008
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#define FP_STKY_I 0x00000004
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/* Rounding Modes */
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#define FP_RMODE 0x00000003
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#define FP_RN 0x00000000
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#define FP_RZ 0x00000001
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#define FP_RP 0x00000002
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#define FP_RM 0x00000003
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#define FP_RN_MASK 0x00000003
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#define FP_RZ_MASK 0x00000002
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#define FP_RP_MASK 0x00000001
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#define FP_RM_MASK 0x00000000
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#if defined(_LANGUAGE_ASSEMBLY)
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#define fpc_irr $0
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#define fpc_led $0
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#define fpc_eir $30
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#define fpc_csr $31
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#endif
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#define IMPLEMENTATION_NONE 0 /* software */
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#define IMPLEMENTATION_R2360 0x100 /* board */
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#define IMPLEMENTATION_R2010 0x200 /* chip */
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