46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
#ifndef ULTRA64_MBI_H
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#define ULTRA64_MBI_H
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/*
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* Header file for the Media Binary Interface
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*
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* NOTE: This file is included by the RSP microcode, so any C-specific
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* constructs must be bracketed by #ifdef _LANGUAGE_C
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*
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*/
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/*
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* the SHIFT macros are used to build display list commands, inserting
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* bit-fields into a 32-bit word. They take a value, a shift amount,
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* and a width.
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*
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* For the left shift, the lower bits of the value are masked,
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* then shifted left.
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*
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* For the right shift, the value is shifted right, then the lower bits
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* are masked.
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*
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* (NOTE: _SHIFTL(v, 0, 32) won't work, just use an assignment)
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*
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*/
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#define _SHIFTL(v, s, w) \
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((u32) (((u32)(v) & ((0x01 << (w)) - 1)) << (s)))
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#define _SHIFTR(v, s, w) \
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((u32)(((u32)(v) >> (s)) & ((0x01 << (w)) - 1)))
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#define G_ON (1)
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#define G_OFF (0)
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#include <stdint.h>
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#include "types.h"
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#include "gbi.h"
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#include "abi.h"
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#define NUM_SEGMENTS (16)
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#define SEGMENT_OFFSET(a) ((u32)(a) & 0x00FFFFFF)
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#define SEGMENT_NUMBER(a) (((u32)(a) << 4) >> 28)
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#define SEGMENT_ADDR(num, off) (((num) << 24) + (off))
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#endif
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