GodMode9/common/common.h

#pragma once

#include <inttypes.h>
#include <stddef.h>
#include <stdbool.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdalign.h>

#include <types.h>

#ifdef ARM9
# ifdef MONITOR_HEAP
#include "mymalloc.h"
#define malloc my_malloc
#define realloc my_realloc
#define free my_free
# endif
#endif

#define max(a,b) \
    (((a) > (b)) ? (a) : (b))

#define min(a,b) \
    (((a) < (b)) ? (a) : (b))

#define abs(x) \
    (((x) >= 0) ? (x) : -(x))

#define int_sign(x) \
    (((x) > 0) - ((x) < 0))

#define clamp(x, min, max) \
    ((x) < (max) ? ((x) > (min) ? (x) : (min)) : (max))

#define getbe16(d) \
    (((d)[0]<<8) | (d)[1])
#define getbe32(d) \
    ((((u32) getbe16(d))<<16) | ((u32) getbe16((d)+2)))
#define getbe64(d) \
    ((((u64) getbe32(d))<<32) | ((u64) getbe32((d)+4)))

#define getle16(d) \
    (((d)[1]<<8) | (d)[0])
#define getle32(d) \
    ((((u32) getle16((d)+2))<<16) | ((u32) getle16(d)))
#define getle64(d) \
    ((((u64) getle32((d)+4))<<32) | ((u64) getle32(d)))

#define align(v,a) \
    (((v) % (a)) ? ((v) + (a) - ((v) % (a))) : (v))

#define countof(x) \
    (sizeof(x) / sizeof(*(x)))

#define bkpt \
    asm volatile("bkpt\n\t")

#define STATIC_ASSERT(...) \
    _Static_assert((__VA_ARGS__), #__VA_ARGS__)

static inline u32 xbits(u32 *map, u32 start, u32 n)
{
    u32 ret, mask, off, shift;

    if (n > 32)
        return -1;

    mask = ((u32)(1 << n)) - 1;
    off = start / 32;
    shift = start % 32;

    ret = map[off] >> shift;
    if ((n + shift) > 32)
        ret |= map[off+1] << (32 - shift);
    return ret & mask;
}


// standard output path (support file paths are in support.h)
#define OUTPUT_PATH     "0:/gm9/out"

// used in several places
#define STD_BUFFER_SIZE     0x100000 // must be a multiple of 0x200

// buffer area defines (in use by image.c, for RAMdrive)
#define RAMDRV_BUFFER       ((u8*)0x22800000) // top of STACK
#define RAMDRV_SIZE_O3DS    (0x5800000) // 88MB
#define RAMDRV_SIZE_N3DS    (0xD800000) // 216MB