mirror of https://github.com/n64decomp/mk64.git
109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
#ifndef _MACROS_H_
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#define _MACROS_H_
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#ifndef __sgi
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#define GLOBAL_ASM(...)
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#endif
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#if !defined(__sgi) && (!defined(NON_MATCHING) || !defined(AVOID_UB))
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// asm-process isn't supported outside of IDO, and undefined behavior causes
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// crashes.
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// #error Matching build is only possible on IDO; please build with NON_MATCHING=1.
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#endif
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#define ARRAY_COUNT(arr) (s32)(sizeof(arr) / sizeof(arr[0]))
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#define GLUE(a, b) a##b
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#define GLUE2(a, b) GLUE(a, b)
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// Avoid compiler warnings for unused variables
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#ifdef __GNUC__
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#define UNUSED __attribute__((unused))
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#else
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#define UNUSED
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#endif
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// Avoid undefined behaviour for non-returning functions
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#ifdef __GNUC__
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#define NORETURN __attribute__((noreturn))
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#else
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#define NORETURN
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#endif
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// Avoid undefined behaviour for non-returning functions
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#ifdef __GNUC__
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#define NO_REORDER __attribute__((no_reorder))
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#else
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#define NO_REORDER
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#endif
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// Static assertions
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#ifdef __GNUC__
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#define STATIC_ASSERT(cond, msg) _Static_assert(cond, msg)
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#else
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#define STATIC_ASSERT(cond, msg) typedef char GLUE2(static_assertion_failed, __LINE__)[(cond) ? 1 : -1]
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#endif
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// Align to 8-byte boundary for DMA requirements
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#ifdef __GNUC__
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#define ALIGNED8 __attribute__((aligned(8)))
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#else
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#define ALIGNED8
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#endif
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// Align to 16-byte boundary for audio lib requirements
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#ifdef __GNUC__
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#define ALIGNED16 __attribute__((aligned(16)))
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#else
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#define ALIGNED16
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#endif
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// Fixed point macros
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#define FTOFIX(f) ((s32) ((f) * 65536.0))
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#define ITOFIX(i) ((s32) ((i) << 16))
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#define FIXTOF(x) ((double) ((x) / 65536.0))
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#define FIXTOI(x) ((s32) ((x) >> 16))
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// Split fixed-point values into its integer or fractional parts.
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#define toFixedInt(f) (FTOFIX(f) >> 16)
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#define toFrac(f) (FTOFIX(f) & 0xFFFF)
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// Setup a fixed-point matrix using floats or doubles. Recommend using doubles for more precision.
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#define toFixedPointMatrix(x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15, x16) \
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{ \
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{ ((toFixedInt(x1)) << 16) | toFixedInt(x2), ((toFixedInt(x3)) << 16) | toFixedInt(x4), \
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(toFixedInt(x5) << 16) | toFixedInt(x6), (toFixedInt(x7) << 16) | toFixedInt(x8) }, \
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{ ((toFixedInt(x9)) << 16) | toFixedInt(x10), ((toFixedInt(x11)) << 16) | toFixedInt(x12), \
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(toFixedInt(x13) << 16) | toFixedInt(x14), (toFixedInt(x15) << 16) | toFixedInt(x16) }, \
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{ ((toFrac(x1)) << 16) | toFrac(x2), ((toFrac(x3)) << 16) | toFrac(x4), (toFrac(x5) << 16) | toFrac(x6), \
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(toFrac(x7) << 16) | toFrac(x8) }, \
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{ \
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((toFrac(x9)) << 16) | toFrac(x10), ((toFrac(x11)) << 16) | toFrac(x12), \
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(toFrac(x13) << 16) | toFrac(x14), (toFrac(x15) << 16) | toFrac(x16) \
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} \
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}
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// convert a virtual address to physical.
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#define VIRTUAL_TO_PHYSICAL(addr) ((uintptr_t) (addr) & 0x1FFFFFFF)
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// convert a physical address to virtual.
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#define PHYSICAL_TO_VIRTUAL(addr) ((uintptr_t) (addr) | 0x80000000)
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// another way of converting virtual to physical
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#define VIRTUAL_TO_PHYSICAL2(addr) ((u8*) (addr) - 0x80000000U)
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// aligns an address to the next 16 bytes
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#define ALIGN16(val) (((val) + 0xF) & ~0xF)
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/**
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* (u8*) dl : Cast array down to u8's
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* + sizeof(dl) : go to the end of the array
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* - sizeof(dl[0]) : walk back 1 Gfx macro
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* - 0x07000000 : get just the offset
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**/
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#define GET_PACKED_END(dl) (((u8*) dl) + sizeof(dl) - sizeof(dl[0]) - 0x07000000)
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#define SQ(x) ((x) * (x))
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#endif
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