macros.h

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#ifndef _MACROS_H_
#define _MACROS_H_
 
 
#ifndef __sgi
#define GLOBAL_ASM(...)
#endif
 
#if !defined(__sgi) && (!defined(NON_MATCHING) || !defined(AVOID_UB))
// asm-process isn't supported outside of IDO, and undefined behavior causes
// crashes.
//#error Matching build is only possible on IDO; please build with NON_MATCHING=1.
#endif
 
#define ARRAY_COUNT(arr) (s32)(sizeof(arr) / sizeof(arr[0]))
 
#define GLUE(a, b) a ## b
#define GLUE2(a, b) GLUE(a, b)
 
// Avoid compiler warnings for unused variables
#ifdef __GNUC__
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#endif
 
// Avoid undefined behaviour for non-returning functions
#ifdef __GNUC__
#define NORETURN __attribute__((noreturn))
#else
#define NORETURN
#endif
 
// Static assertions
#ifdef __GNUC__
#define STATIC_ASSERT(cond, msg) _Static_assert(cond, msg)
#else
#define STATIC_ASSERT(cond, msg) typedef char GLUE2(static_assertion_failed, __LINE__)[(cond) ? 1 : -1]
#endif
 
// Align to 8-byte boundary for DMA requirements
#ifdef __GNUC__
#define ALIGNED8 __attribute__((aligned(8)))
#else
#define ALIGNED8
#endif
 
// Align to 16-byte boundary for audio lib requirements
#ifdef __GNUC__
#define ALIGNED16 __attribute__((aligned(16)))
#else
#define ALIGNED16
#endif
 
// convert a virtual address to physical.
#define VIRTUAL_TO_PHYSICAL(addr)   ((uintptr_t)(addr) & 0x1FFFFFFF)
 
// convert a physical address to virtual.
#define PHYSICAL_TO_VIRTUAL(addr)   ((uintptr_t)(addr) | 0x80000000)
 
// another way of converting virtual to physical
#define VIRTUAL_TO_PHYSICAL2(addr)  ((u8 *)(addr) - 0x80000000U)
 
// aligns an address to the next 16 bytes
#define ALIGN16(val) (((val) + 0xF) & ~0xF)
 
#define GET_PACKED_END(dl) (((u8*) dl) + sizeof(dl) - sizeof(dl[0]) - 0x07000000)
 
#endif