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grub/include/grub/misc.h
Andrey Borzenkov f371dd5da8 fix include loop on MinGW due to libintl.h pulling stdio.h 
In file included from ./include/grub/dl.h:23:0,
                 from grub-core/lib/libgcrypt-grub/cipher/rfc2268.c:3:
./include/grub/list.h:34:18: warning: conflicting types for 'grub_list_push' [en
abled by default]
 void EXPORT_FUNC(grub_list_push) (grub_list_t *head, grub_list_t item);
                  ^
./include/grub/symbol.h:68:25: note: in definition of macro 'EXPORT_FUNC'
 # define EXPORT_FUNC(x) x
                         ^
In file included from ./include/grub/fs.h:30:0,
                 from ./include/grub/file.h:25,
                 from ./grub-core/lib/posix_wrap/stdio.h:23,
                 from c:\mingw\include\libintl.h:314,
                 from ./include/grub/i18n.h:33,
                 from ./include/grub/misc.h:27,
                 from ./include/grub/list.h:25,
                 from ./include/grub/dl.h:28,
                 from grub-core/lib/libgcrypt-grub/cipher/rfc2268.c:3:
./include/grub/partition.h:106:3: note: previous implicit declaration of 'grub_l
ist_push' was here
   grub_list_push (GRUB_AS_LIST_P (&grub_partition_map_list),
   ^
list.h needs just ATTRIBUTE_ERROR from misc.h; split compiler features
into separate file grub/compiler.h and include it instead.
2014-01-18 21:22:57 +04:00

517 lines
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/* misc.h - prototypes for misc functions */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_MISC_HEADER
#define GRUB_MISC_HEADER 1
#include <stdarg.h>
#include <grub/types.h>
#include <grub/symbol.h>
#include <grub/err.h>
#include <grub/i18n.h>
#include <grub/compiler.h>
#define ALIGN_UP(addr, align) \
((addr + (typeof (addr)) align - 1) & ~((typeof (addr)) align - 1))
#define ALIGN_UP_OVERHEAD(addr, align) ((-(addr)) & ((typeof (addr)) (align) - 1))
#define ALIGN_DOWN(addr, align) \
((addr) & ~((typeof (addr)) align - 1))
#define ARRAY_SIZE(array) (sizeof (array) / sizeof (array[0]))
#define COMPILE_TIME_ASSERT(cond) switch (0) { case 1: case !(cond): ; }
#define grub_dprintf(condition, ...) grub_real_dprintf(GRUB_FILE, __LINE__, condition, __VA_ARGS__)
void *EXPORT_FUNC(grub_memmove) (void *dest, const void *src, grub_size_t n);
char *EXPORT_FUNC(grub_strcpy) (char *dest, const char *src);
static inline char *
grub_strncpy (char *dest, const char *src, int c)
{
char *p = dest;
while ((*p++ = *src++) != '\0' && --c)
;
return dest;
}
static inline char *
grub_stpcpy (char *dest, const char *src)
{
char *d = dest;
const char *s = src;
do
*d++ = *s;
while (*s++ != '\0');
return d - 1;
}
/* XXX: If grub_memmove is too slow, we must implement grub_memcpy. */
static inline void *
grub_memcpy (void *dest, const void *src, grub_size_t n)
{
return grub_memmove (dest, src, n);
}
#if defined (__APPLE__) && defined(__i386__) && !defined (GRUB_UTIL)
#define GRUB_BUILTIN_ATTR __attribute__ ((regparm(0)))
#else
#define GRUB_BUILTIN_ATTR
#endif
#if defined(__x86_64__) && !defined (GRUB_UTIL)
#if defined (__MINGW32__) || defined (__CYGWIN__) || defined (__MINGW64__)
#define GRUB_ASM_ATTR __attribute__ ((sysv_abi))
#else
#define GRUB_ASM_ATTR
#endif
#endif
/* Prototypes for aliases. */
#ifndef GRUB_UTIL
int GRUB_BUILTIN_ATTR EXPORT_FUNC(memcmp) (const void *s1, const void *s2, grub_size_t n);
void *GRUB_BUILTIN_ATTR EXPORT_FUNC(memmove) (void *dest, const void *src, grub_size_t n);
void *GRUB_BUILTIN_ATTR EXPORT_FUNC(memcpy) (void *dest, const void *src, grub_size_t n);
void *GRUB_BUILTIN_ATTR EXPORT_FUNC(memset) (void *s, int c, grub_size_t n);
#ifdef __APPLE__
void GRUB_BUILTIN_ATTR EXPORT_FUNC (__bzero) (void *s, grub_size_t n);
#endif
#endif
int EXPORT_FUNC(grub_memcmp) (const void *s1, const void *s2, grub_size_t n);
int EXPORT_FUNC(grub_strcmp) (const char *s1, const char *s2);
int EXPORT_FUNC(grub_strncmp) (const char *s1, const char *s2, grub_size_t n);
char *EXPORT_FUNC(grub_strchr) (const char *s, int c);
char *EXPORT_FUNC(grub_strrchr) (const char *s, int c);
int EXPORT_FUNC(grub_strword) (const char *s, const char *w);
/* Copied from gnulib.
Written by Bruno Haible <bruno@clisp.org>, 2005. */
static inline char *
grub_strstr (const char *haystack, const char *needle)
{
/* Be careful not to look at the entire extent of haystack or needle
until needed. This is useful because of these two cases:
- haystack may be very long, and a match of needle found early,
- needle may be very long, and not even a short initial segment of
needle may be found in haystack. */
if (*needle != '\0')
{
/* Speed up the following searches of needle by caching its first
character. */
char b = *needle++;
for (;; haystack++)
{
if (*haystack == '\0')
/* No match. */
return 0;
if (*haystack == b)
/* The first character matches. */
{
const char *rhaystack = haystack + 1;
const char *rneedle = needle;
for (;; rhaystack++, rneedle++)
{
if (*rneedle == '\0')
/* Found a match. */
return (char *) haystack;
if (*rhaystack == '\0')
/* No match. */
return 0;
if (*rhaystack != *rneedle)
/* Nothing in this round. */
break;
}
}
}
}
else
return (char *) haystack;
}
int EXPORT_FUNC(grub_isspace) (int c);
static inline int
grub_isprint (int c)
{
return (c >= ' ' && c <= '~');
}
static inline int
grub_iscntrl (int c)
{
return (c >= 0x00 && c <= 0x1F) || c == 0x7F;
}
static inline int
grub_isalpha (int c)
{
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
}
static inline int
grub_islower (int c)
{
return (c >= 'a' && c <= 'z');
}
static inline int
grub_isupper (int c)
{
return (c >= 'A' && c <= 'Z');
}
static inline int
grub_isgraph (int c)
{
return (c >= '!' && c <= '~');
}
static inline int
grub_isdigit (int c)
{
return (c >= '0' && c <= '9');
}
static inline int
grub_isxdigit (int c)
{
return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
}
static inline int
grub_isalnum (int c)
{
return grub_isalpha (c) || grub_isdigit (c);
}
static inline int
grub_tolower (int c)
{
if (c >= 'A' && c <= 'Z')
return c - 'A' + 'a';
return c;
}
static inline int
grub_toupper (int c)
{
if (c >= 'a' && c <= 'z')
return c - 'a' + 'A';
return c;
}
static inline int
grub_strcasecmp (const char *s1, const char *s2)
{
while (*s1 && *s2)
{
if (grub_tolower ((grub_uint8_t) *s1)
!= grub_tolower ((grub_uint8_t) *s2))
break;
s1++;
s2++;
}
return (int) grub_tolower ((grub_uint8_t) *s1)
- (int) grub_tolower ((grub_uint8_t) *s2);
}
static inline int
grub_strncasecmp (const char *s1, const char *s2, grub_size_t n)
{
if (n == 0)
return 0;
while (*s1 && *s2 && --n)
{
if (grub_tolower (*s1) != grub_tolower (*s2))
break;
s1++;
s2++;
}
return (int) grub_tolower ((grub_uint8_t) *s1)
- (int) grub_tolower ((grub_uint8_t) *s2);
}
unsigned long EXPORT_FUNC(grub_strtoul) (const char *str, char **end, int base);
unsigned long long EXPORT_FUNC(grub_strtoull) (const char *str, char **end, int base);
static inline long
grub_strtol (const char *str, char **end, int base)
{
int negative = 0;
unsigned long long magnitude;
while (*str && grub_isspace (*str))
str++;
if (*str == '-')
{
negative = 1;
str++;
}
magnitude = grub_strtoull (str, end, base);
if (negative)
{
if (magnitude > (unsigned long) GRUB_LONG_MAX + 1)
{
grub_error (GRUB_ERR_OUT_OF_RANGE, N_("overflow is detected"));
return GRUB_LONG_MIN;
}
return -((long) magnitude);
}
else
{
if (magnitude > GRUB_LONG_MAX)
{
grub_error (GRUB_ERR_OUT_OF_RANGE, N_("overflow is detected"));
return GRUB_LONG_MAX;
}
return (long) magnitude;
}
}
char *EXPORT_FUNC(grub_strdup) (const char *s) WARN_UNUSED_RESULT;
char *EXPORT_FUNC(grub_strndup) (const char *s, grub_size_t n) WARN_UNUSED_RESULT;
void *EXPORT_FUNC(grub_memset) (void *s, int c, grub_size_t n);
grub_size_t EXPORT_FUNC(grub_strlen) (const char *s) WARN_UNUSED_RESULT;
int EXPORT_FUNC(grub_printf) (const char *fmt, ...) __attribute__ ((format (GNU_PRINTF, 1, 2)));
int EXPORT_FUNC(grub_printf_) (const char *fmt, ...) __attribute__ ((format (GNU_PRINTF, 1, 2)));
/* Replace all `ch' characters of `input' with `with' and copy the
result into `output'; return EOS address of `output'. */
static inline char *
grub_strchrsub (char *output, const char *input, char ch, const char *with)
{
while (*input)
{
if (*input == ch)
{
grub_strcpy (output, with);
output += grub_strlen (with);
input++;
continue;
}
*output++ = *input++;
}
*output = '\0';
return output;
}
extern void (*EXPORT_VAR (grub_xputs)) (const char *str);
static inline int
grub_puts (const char *s)
{
const char nl[2] = "\n";
grub_xputs (s);
grub_xputs (nl);
return 1; /* Cannot fail. */
}
int EXPORT_FUNC(grub_puts_) (const char *s);
void EXPORT_FUNC(grub_real_dprintf) (const char *file,
const int line,
const char *condition,
const char *fmt, ...) __attribute__ ((format (GNU_PRINTF, 4, 5)));
int EXPORT_FUNC(grub_vprintf) (const char *fmt, va_list args);
int EXPORT_FUNC(grub_snprintf) (char *str, grub_size_t n, const char *fmt, ...)
__attribute__ ((format (GNU_PRINTF, 3, 4)));
int EXPORT_FUNC(grub_vsnprintf) (char *str, grub_size_t n, const char *fmt,
va_list args);
char *EXPORT_FUNC(grub_xasprintf) (const char *fmt, ...)
__attribute__ ((format (GNU_PRINTF, 1, 2))) WARN_UNUSED_RESULT;
char *EXPORT_FUNC(grub_xvasprintf) (const char *fmt, va_list args) WARN_UNUSED_RESULT;
void EXPORT_FUNC(grub_exit) (void) __attribute__ ((noreturn));
grub_uint64_t EXPORT_FUNC(grub_divmod64) (grub_uint64_t n,
grub_uint64_t d,
grub_uint64_t *r);
#if (defined (__MINGW32__) || defined (__CYGWIN__)) && !defined(GRUB_UTIL)
void EXPORT_FUNC (__register_frame_info) (void);
void EXPORT_FUNC (__deregister_frame_info) (void);
void EXPORT_FUNC (___chkstk_ms) (void);
void EXPORT_FUNC (__chkstk_ms) (void);
#endif
/* Inline functions. */
static inline char *
grub_memchr (const void *p, int c, grub_size_t len)
{
const char *s = (const char *) p;
const char *e = s + len;
for (; s < e; s++)
if (*s == c)
return (char *) s;
return 0;
}
static inline unsigned int
grub_abs (int x)
{
if (x < 0)
return (unsigned int) (-x);
else
return (unsigned int) x;
}
/* Rounded-up division */
static inline unsigned int
grub_div_roundup (unsigned int x, unsigned int y)
{
return (x + y - 1) / y;
}
/* Reboot the machine. */
#if defined (GRUB_MACHINE_EMU) || defined (GRUB_MACHINE_QEMU_MIPS)
void EXPORT_FUNC(grub_reboot) (void) __attribute__ ((noreturn));
#else
void grub_reboot (void) __attribute__ ((noreturn));
#endif
#if defined (__clang__) && !defined (GRUB_UTIL)
void __attribute__ ((noreturn)) EXPORT_FUNC (abort) (void);
#endif
#ifdef GRUB_MACHINE_PCBIOS
/* Halt the system, using APM if possible. If NO_APM is true, don't
* use APM even if it is available. */
void grub_halt (int no_apm) __attribute__ ((noreturn));
#elif defined (__mips__) && !defined (GRUB_MACHINE_EMU)
void EXPORT_FUNC (grub_halt) (void) __attribute__ ((noreturn));
#else
void grub_halt (void) __attribute__ ((noreturn));
#endif
#ifdef GRUB_MACHINE_EMU
/* Flag to check if module loading is available. */
extern const int EXPORT_VAR(grub_no_modules);
#else
#define grub_no_modules 0
#endif
static inline void
grub_error_save (struct grub_error_saved *save)
{
grub_memcpy (save->errmsg, grub_errmsg, sizeof (save->errmsg));
save->grub_errno = grub_errno;
grub_errno = GRUB_ERR_NONE;
}
static inline void
grub_error_load (const struct grub_error_saved *save)
{
grub_memcpy (grub_errmsg, save->errmsg, sizeof (grub_errmsg));
grub_errno = save->grub_errno;
}
#ifndef GRUB_UTIL
#if defined (__arm__)
grub_uint32_t
EXPORT_FUNC (__udivsi3) (grub_uint32_t a, grub_uint32_t b);
grub_uint32_t
EXPORT_FUNC (__umodsi3) (grub_uint32_t a, grub_uint32_t b);
#endif
#if defined (__sparc__) || defined (__powerpc__)
unsigned
EXPORT_FUNC (__ctzdi2) (grub_uint64_t x);
#define NEED_CTZDI2 1
#endif
#if defined (__mips__) || defined (__arm__)
unsigned
EXPORT_FUNC (__ctzsi2) (grub_uint32_t x);
#define NEED_CTZSI2 1
#endif
#ifdef __arm__
grub_uint32_t
EXPORT_FUNC (__aeabi_uidiv) (grub_uint32_t a, grub_uint32_t b);
grub_uint32_t
EXPORT_FUNC (__aeabi_uidivmod) (grub_uint32_t a, grub_uint32_t b);
/* Needed for allowing modules to be compiled as thumb. */
grub_uint64_t
EXPORT_FUNC (__muldi3) (grub_uint64_t a, grub_uint64_t b);
grub_uint64_t
EXPORT_FUNC (__aeabi_lmul) (grub_uint64_t a, grub_uint64_t b);
#endif
#if defined (__ia64__)
grub_uint64_t
EXPORT_FUNC (__udivdi3) (grub_uint64_t a, grub_uint64_t b);
grub_uint64_t
EXPORT_FUNC (__umoddi3) (grub_uint64_t a, grub_uint64_t b);
#endif
#endif /* GRUB_UTIL */
#if BOOT_TIME_STATS
struct grub_boot_time
{
struct grub_boot_time *next;
grub_uint64_t tp;
const char *file;
int line;
char *msg;
};
extern struct grub_boot_time *EXPORT_VAR(grub_boot_time_head);
void EXPORT_FUNC(grub_real_boot_time) (const char *file,
const int line,
const char *fmt, ...) __attribute__ ((format (GNU_PRINTF, 3, 4)));
#define grub_boot_time(...) grub_real_boot_time(GRUB_FILE, __LINE__, __VA_ARGS__)
#else
#define grub_boot_time(...)
#endif
#define grub_max(a, b) (((a) > (b)) ? (a) : (b))
#define grub_min(a, b) (((a) < (b)) ? (a) : (b))
#endif /* ! GRUB_MISC_HEADER */
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