diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/common.h | 87 | ||||
| -rw-r--r-- | include/linux/compat.h | 54 | ||||
| -rw-r--r-- | include/linux/kernel.h | 157 |
3 files changed, 158 insertions, 140 deletions
diff --git a/include/common.h b/include/common.h index c9fe38656e..c1bdaeccaa 100644 --- a/include/common.h +++ b/include/common.h @@ -23,6 +23,7 @@ typedef volatile unsigned char vu_char; #include <linux/stringify.h> #include <asm/ptrace.h> #include <stdarg.h> +#include <linux/kernel.h> #if defined(CONFIG_PCI) && defined(CONFIG_4xx) #include <pci.h> #endif @@ -168,58 +169,6 @@ typedef void (interrupt_handler_t)(void *); # endif #endif -/* - * General Purpose Utilities - */ -#define min(X, Y) \ - ({ typeof(X) __x = (X); \ - typeof(Y) __y = (Y); \ - (__x < __y) ? __x : __y; }) - -#define max(X, Y) \ - ({ typeof(X) __x = (X); \ - typeof(Y) __y = (Y); \ - (__x > __y) ? __x : __y; }) - -#define min3(X, Y, Z) \ - ({ typeof(X) __x = (X); \ - typeof(Y) __y = (Y); \ - typeof(Z) __z = (Z); \ - __x < __y ? (__x < __z ? __x : __z) : \ - (__y < __z ? __y : __z); }) - -#define max3(X, Y, Z) \ - ({ typeof(X) __x = (X); \ - typeof(Y) __y = (Y); \ - typeof(Z) __z = (Z); \ - __x > __y ? (__x > __z ? __x : __z) : \ - (__y > __z ? __y : __z); }) - -/* - * Return the absolute value of a number. - * - * This handles unsigned and signed longs, ints, shorts and chars. For all - * input types abs() returns a signed long. - * - * For 64-bit types, use abs64() - */ -#define abs(x) ({ \ - long ret; \ - if (sizeof(x) == sizeof(long)) { \ - long __x = (x); \ - ret = (__x < 0) ? -__x : __x; \ - } else { \ - int __x = (x); \ - ret = (__x < 0) ? -__x : __x; \ - } \ - ret; \ - }) - -#define abs64(x) ({ \ - s64 __x = (x); \ - (__x < 0) ? -__x : __x; \ - }) - #if defined(CONFIG_ENV_IS_EMBEDDED) #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN #elif ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \ @@ -230,17 +179,6 @@ typedef void (interrupt_handler_t)(void *); #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN #endif -/** - * container_of - cast a member of a structure out to the containing structure - * @ptr: the pointer to the member. - * @type: the type of the container struct this is embedded in. - * @member: the name of the member within the struct. - * - */ -#define container_of(ptr, type, member) ({ \ - const typeof( ((type *)0)->member ) *__mptr = (ptr); \ - (type *)( (char *)__mptr - offsetof(type,member) );}) - /* * Function Prototypes */ @@ -947,30 +885,7 @@ static inline phys_addr_t map_to_sysmem(const void *ptr) #error Read section CONFIG_SKIP_LOWLEVEL_INIT in README. #endif -#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) - #define ROUND(a,b) (((a) + (b) - 1) & ~((b) - 1)) -#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) -#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) - -/* - * Divide positive or negative dividend by positive divisor and round - * to closest integer. Result is undefined for negative divisors and - * for negative dividends if the divisor variable type is unsigned. - */ -#define DIV_ROUND_CLOSEST(x, divisor)( \ -{ \ - typeof(x) __x = x; \ - typeof(divisor) __d = divisor; \ - (((typeof(x))-1) > 0 || \ - ((typeof(divisor))-1) > 0 || (__x) > 0) ? \ - (((__x) + ((__d) / 2)) / (__d)) : \ - (((__x) - ((__d) / 2)) / (__d)); \ -} \ -) - -#define ALIGN(x,a) __ALIGN_MASK((x),(typeof(x))(a)-1) -#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) /* * ARCH_DMA_MINALIGN is defined in asm/cache.h for each architecture. It diff --git a/include/linux/compat.h b/include/linux/compat.h index 7ff6064b18..47b0889739 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -57,17 +57,6 @@ void *kmem_cache_alloc(struct kmem_cache *obj, int flag); #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) -/* - * ..and if you can't take the strict - * types, you can specify one yourself. - * - * Or not use min/max at all, of course. - */ -#define min_t(type,x,y) \ - ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; }) -#define max_t(type,x,y) \ - ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; }) - #ifndef BUG #define BUG() do { \ printf("U-Boot BUG at %s:%d!\n", __FILE__, __LINE__); \ @@ -81,24 +70,6 @@ void *kmem_cache_alloc(struct kmem_cache *obj, int flag); #define PAGE_SIZE 4096 -/** - * upper_32_bits - return MSB bits 32-63 of a number if little endian, or - * return MSB bits 0-31 of a number if big endian. - * @n: the number we're accessing - * - * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress - * the "right shift count >= width of type" warning when that quantity is - * 32-bits. - */ -#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) - -/** - * lower_32_bits - return LSB bits 0-31 of a number if little endian, or - * return LSB bits 32-63 of a number if big endian. - * @n: the number we're accessing - */ -#define lower_32_bits(n) ((u32)(n)) - /* drivers/char/random.c */ #define get_random_bytes(...) @@ -152,17 +123,6 @@ typedef unsigned long blkcnt_t; #define ENOTSUPP 524 /* Operation is not supported */ -/* from include/linux/kernel.h */ -/* - * This looks more complex than it should be. But we need to - * get the type for the ~ right in round_down (it needs to be - * as wide as the result!), and we want to evaluate the macro - * arguments just once each. - */ -#define __round_mask(x, y) ((__typeof__(x))((y)-1)) -#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) -#define round_down(x, y) ((x) & ~__round_mask(x, y)) - /* module */ #define THIS_MODULE 0 #define try_module_get(...) 1 @@ -198,18 +158,6 @@ typedef unsigned long blkcnt_t; #define blocking_notifier_call_chain(...) 0 -/* - * Multiplies an integer by a fraction, while avoiding unnecessary - * overflow or loss of precision. - */ -#define mult_frac(x, numer, denom)( \ -{ \ - typeof(x) quot = (x) / (denom); \ - typeof(x) rem = (x) % (denom); \ - (quot * (numer)) + ((rem * (numer)) / (denom)); \ -} \ -) - #define __initdata #define late_initcall(...) @@ -267,8 +215,6 @@ typedef int wait_queue_head_t; #define cond_resched() do { } while (0) #define yield() do { } while (0) -#define INT_MAX ((int)(~0U>>1)) - #define __user #define __init #define __exit diff --git a/include/linux/kernel.h b/include/linux/kernel.h new file mode 100644 index 0000000000..527ed401bc --- /dev/null +++ b/include/linux/kernel.h @@ -0,0 +1,157 @@ +#ifndef _LINUX_KERNEL_H +#define _LINUX_KERNEL_H + + +#include <linux/types.h> + +#define INT_MAX ((int)(~0U>>1)) +#define INT_MIN (-INT_MAX - 1) +#define LLONG_MAX ((long long)(~0ULL>>1)) + +#define U8_MAX ((u8)~0U) +#define U32_MAX ((u32)~0U) +#define U64_MAX ((u64)~0ULL) + +#define ALIGN(x,a) __ALIGN_MASK((x),(typeof(x))(a)-1) +#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +/* + * This looks more complex than it should be. But we need to + * get the type for the ~ right in round_down (it needs to be + * as wide as the result!), and we want to evaluate the macro + * arguments just once each. + */ +#define __round_mask(x, y) ((__typeof__(x))((y)-1)) +#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) +#define round_down(x, y) ((x) & ~__round_mask(x, y)) + +#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) + +#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) + +/* + * Divide positive or negative dividend by positive divisor and round + * to closest integer. Result is undefined for negative divisors and + * for negative dividends if the divisor variable type is unsigned. + */ +#define DIV_ROUND_CLOSEST(x, divisor)( \ +{ \ + typeof(x) __x = x; \ + typeof(divisor) __d = divisor; \ + (((typeof(x))-1) > 0 || \ + ((typeof(divisor))-1) > 0 || (__x) > 0) ? \ + (((__x) + ((__d) / 2)) / (__d)) : \ + (((__x) - ((__d) / 2)) / (__d)); \ +} \ +) + +/* + * Multiplies an integer by a fraction, while avoiding unnecessary + * overflow or loss of precision. + */ +#define mult_frac(x, numer, denom)( \ +{ \ + typeof(x) quot = (x) / (denom); \ + typeof(x) rem = (x) % (denom); \ + (quot * (numer)) + ((rem * (numer)) / (denom)); \ +} \ +) + +/** + * upper_32_bits - return bits 32-63 of a number + * @n: the number we're accessing + * + * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress + * the "right shift count >= width of type" warning when that quantity is + * 32-bits. + */ +#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) + +/** + * lower_32_bits - return bits 0-31 of a number + * @n: the number we're accessing + */ +#define lower_32_bits(n) ((u32)(n)) + +/* + * abs() handles unsigned and signed longs, ints, shorts and chars. For all + * input types abs() returns a signed long. + * abs() should not be used for 64-bit types (s64, u64, long long) - use abs64() + * for those. + */ +#define abs(x) ({ \ + long ret; \ + if (sizeof(x) == sizeof(long)) { \ + long __x = (x); \ + ret = (__x < 0) ? -__x : __x; \ + } else { \ + int __x = (x); \ + ret = (__x < 0) ? -__x : __x; \ + } \ + ret; \ + }) + +#define abs64(x) ({ \ + s64 __x = (x); \ + (__x < 0) ? -__x : __x; \ + }) + +/* + * min()/max()/clamp() macros that also do + * strict type-checking.. See the + * "unnecessary" pointer comparison. + */ +#define min(x, y) ({ \ + typeof(x) _min1 = (x); \ + typeof(y) _min2 = (y); \ + _min1 < _min2 ? _min1 : _min2; }) + +#define max(x, y) ({ \ + typeof(x) _max1 = (x); \ + typeof(y) _max2 = (y); \ + _max1 > _max2 ? _max1 : _max2; }) + +#define min3(x, y, z) ({ \ + typeof(x) _min1 = (x); \ + typeof(y) _min2 = (y); \ + typeof(z) _min3 = (z); \ + _min1 < _min2 ? (_min1 < _min3 ? _min1 : _min3) : \ + (_min2 < _min3 ? _min2 : _min3); }) + +#define max3(x, y, z) ({ \ + typeof(x) _max1 = (x); \ + typeof(y) _max2 = (y); \ + typeof(z) _max3 = (z); \ + _max1 > _max2 ? (_max1 > _max3 ? _max1 : _max3) : \ + (_max2 > _max3 ? _max2 : _max3); }) + +/* + * ..and if you can't take the strict + * types, you can specify one yourself. + * + * Or not use min/max/clamp at all, of course. + */ +#define min_t(type, x, y) ({ \ + type __min1 = (x); \ + type __min2 = (y); \ + __min1 < __min2 ? __min1: __min2; }) + +#define max_t(type, x, y) ({ \ + type __max1 = (x); \ + type __max2 = (y); \ + __max1 > __max2 ? __max1: __max2; }) + +/** + * container_of - cast a member of a structure out to the containing structure + * @ptr: the pointer to the member. + * @type: the type of the container struct this is embedded in. + * @member: the name of the member within the struct. + * + */ +#define container_of(ptr, type, member) ({ \ + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - offsetof(type,member) );}) + +#endif |