/* Common header file that is included by all of QEMU.
 *
 * This file is supposed to be included only by .c files. No header file should
 * depend on qemu-common.h, as this would easily lead to circular header
 * dependencies.
 *
 * If a header file uses a definition from qemu-common.h, that definition
 * must be moved to a separate header file, and the header that uses it
 * must include that header.
 */
#ifndef QEMU_COMMON_H
#define QEMU_COMMON_H

#include "qemu/osdep.h"
#include "qemu/typedefs.h"
#include "qemu/fprintf-fn.h"
#include "exec/cpu-common.h"

#if defined(__arm__) || defined(__sparc__) || defined(__mips__) || defined(__hppa__) || defined(__ia64__)
#define WORDS_ALIGNED
#endif

#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)

#include "unicorn/platform.h"
#include "glib_compat.h"

/* HOST_LONG_BITS is the size of a native pointer in bits. */
#if UINTPTR_MAX == UINT32_MAX
# define HOST_LONG_BITS 32
#elif UINTPTR_MAX == UINT64_MAX
# define HOST_LONG_BITS 64
#else
# error Unknown pointer size
#endif

#include "qemu/bswap.h"

/* FIXME: Remove NEED_CPU_H.  */
#ifdef NEED_CPU_H
#include "cpu.h"
#endif /* !defined(NEED_CPU_H) */

/* util/cutils.c */
/**
 * pstrcpy:
 * @buf: buffer to copy string into
 * @buf_size: size of @buf in bytes
 * @str: string to copy
 *
 * Copy @str into @buf, including the trailing NUL, but do not
 * write more than @buf_size bytes. The resulting buffer is
 * always NUL terminated (even if the source string was too long).
 * If @buf_size is zero or negative then no bytes are copied.
 *
 * This function is similar to strncpy(), but avoids two of that
 * function's problems:
 *  * if @str fits in the buffer, pstrcpy() does not zero-fill the
 *    remaining space at the end of @buf
 *  * if @str is too long, pstrcpy() will copy the first @buf_size-1
 *    bytes and then add a NUL
 */
void pstrcpy(char *buf, int buf_size, const char *str);
/**
 * strpadcpy:
 * @buf: buffer to copy string into
 * @buf_size: size of @buf in bytes
 * @str: string to copy
 * @pad: character to pad the remainder of @buf with
 *
 * Copy @str into @buf (but *not* its trailing NUL!), and then pad the
 * rest of the buffer with the @pad character. If @str is too large
 * for the buffer then it is truncated, so that @buf contains the
 * first @buf_size characters of @str, with no terminator.
 */
void strpadcpy(char *buf, int buf_size, const char *str, char pad);
/**
 * pstrcat:
 * @buf: buffer containing existing string
 * @buf_size: size of @buf in bytes
 * @s: string to concatenate to @buf
 *
 * Append a copy of @s to the string already in @buf, but do not
 * allow the buffer to overflow. If the existing contents of @buf
 * plus @str would total more than @buf_size bytes, then write
 * as much of @str as will fit followed by a NUL terminator.
 *
 * @buf must already contain a NUL-terminated string, or the
 * behaviour is undefined.
 *
 * Returns: @buf.
 */
char *pstrcat(char *buf, int buf_size, const char *s);
/**
 * strstart:
 * @str: string to test
 * @val: prefix string to look for
 * @ptr: NULL, or pointer to be written to indicate start of
 *       the remainder of the string
 *
 * Test whether @str starts with the prefix @val.
 * If it does (including the degenerate case where @str and @val
 * are equal) then return true. If @ptr is not NULL then a
 * pointer to the first character following the prefix is written
 * to it. If @val is not a prefix of @str then return false (and
 * @ptr is not written to).
 *
 * Returns: true if @str starts with prefix @val, false otherwise.
 */
int strstart(const char *str, const char *val, const char **ptr);
/**
 * stristart:
 * @str: string to test
 * @val: prefix string to look for
 * @ptr: NULL, or pointer to be written to indicate start of
 *       the remainder of the string
 *
 * Test whether @str starts with the case-insensitive prefix @val.
 * This function behaves identically to strstart(), except that the
 * comparison is made after calling qemu_toupper() on each pair of
 * characters.
 *
 * Returns: true if @str starts with case-insensitive prefix @val,
 *          false otherwise.
 */
int stristart(const char *str, const char *val, const char **ptr);
/**
 * qemu_strnlen:
 * @s: string
 * @max_len: maximum number of bytes in @s to scan
 *
 * Return the length of the string @s, like strlen(), but do not
 * examine more than @max_len bytes of the memory pointed to by @s.
 * If no NUL terminator is found within @max_len bytes, then return
 * @max_len instead.
 *
 * This function has the same behaviour as the POSIX strnlen()
 * function.
 *
 * Returns: length of @s in bytes, or @max_len, whichever is smaller.
 */
int qemu_strnlen(const char *s, int max_len);
/**
 * qemu_strsep:
 * @input: pointer to string to parse
 * @delim: string containing delimiter characters to search for
 *
 * Locate the first occurrence of any character in @delim within
 * the string referenced by @input, and replace it with a NUL.
 * The location of the next character after the delimiter character
 * is stored into @input.
 * If the end of the string was reached without finding a delimiter
 * character, then NULL is stored into @input.
 * If @input points to a NULL pointer on entry, return NULL.
 * The return value is always the original value of *@input (and
 * so now points to a NUL-terminated string corresponding to the
 * part of the input up to the first delimiter).
 *
 * This function has the same behaviour as the BSD strsep() function.
 *
 * Returns: the pointer originally in @input.
 */
char *qemu_strsep(char **input, const char *delim);
int qemu_strtol(const char *nptr, const char **endptr, int base,
                long *result);


/*
 * strtosz() suffixes used to specify the default treatment of an
 * argument passed to strtosz() without an explicit suffix.
 * These should be defined using upper case characters in the range
 * A-Z, as strtosz() will use qemu_toupper() on the given argument
 * prior to comparison.
 */
#define STRTOSZ_DEFSUFFIX_EB	'E'
#define STRTOSZ_DEFSUFFIX_PB	'P'
#define STRTOSZ_DEFSUFFIX_TB	'T'
#define STRTOSZ_DEFSUFFIX_GB	'G'
#define STRTOSZ_DEFSUFFIX_MB	'M'
#define STRTOSZ_DEFSUFFIX_KB	'K'
#define STRTOSZ_DEFSUFFIX_B	'B'
int64_t strtosz(const char *nptr, char **end);
int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix);
int64_t strtosz_suffix_unit(const char *nptr, char **end,
                            const char default_suffix, int64_t unit);

/* used to print char* safely */
#define STR_OR_NULL(str) ((str) ? (str) : "null")

#define qemu_isalnum(c)		isalnum((unsigned char)(c))
#define qemu_isalpha(c)		isalpha((unsigned char)(c))
#define qemu_iscntrl(c)		iscntrl((unsigned char)(c))
#define qemu_isdigit(c)		isdigit((unsigned char)(c))
#define qemu_isgraph(c)		isgraph((unsigned char)(c))
#define qemu_islower(c)		islower((unsigned char)(c))
#define qemu_isprint(c)		isprint((unsigned char)(c))
#define qemu_ispunct(c)		ispunct((unsigned char)(c))
#define qemu_isspace(c)		isspace((unsigned char)(c))
#define qemu_isupper(c)		isupper((unsigned char)(c))
#define qemu_isxdigit(c)	isxdigit((unsigned char)(c))
#define qemu_tolower(c)		tolower((unsigned char)(c))
#define qemu_toupper(c)		toupper((unsigned char)(c))
#define qemu_isascii(c)		isascii((unsigned char)(c))
#define qemu_toascii(c)		toascii((unsigned char)(c))

void *qemu_oom_check(void *ptr);

#ifdef _WIN32
/* MinGW needs type casts for the 'buf' and 'optval' arguments. */
#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
    getsockopt(sockfd, level, optname, (void *)optval, optlen)
#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
    setsockopt(sockfd, level, optname, (const void *)optval, optlen)
#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
    sendto(sockfd, (const void *)buf, len, flags, destaddr, addrlen)
#else
#define qemu_getsockopt(sockfd, level, optname, optval, optlen) \
    getsockopt(sockfd, level, optname, optval, optlen)
#define qemu_setsockopt(sockfd, level, optname, optval, optlen) \
    setsockopt(sockfd, level, optname, optval, optlen)
#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
    sendto(sockfd, buf, len, flags, destaddr, addrlen)
#endif

/* Error handling.  */

void tcg_exec_init(struct uc_struct *uc, unsigned long tb_size);
bool tcg_enabled(struct uc_struct *uc);

struct uc_struct;
void cpu_exec_init_all(struct uc_struct *uc);

/* Round number down to multiple */
#define QEMU_ALIGN_DOWN(n, m) ((n) / (m) * (m))

/* Round number up to multiple */
#define QEMU_ALIGN_UP(n, m) QEMU_ALIGN_DOWN((n) + (m) - 1, (m))

#include "qemu/module.h"

/* vector definitions */
#ifdef __ALTIVEC__
#include <altivec.h>
/* The altivec.h header says we're allowed to undef these for
 * C++ compatibility.  Here we don't care about C++, but we
 * undef them anyway to avoid namespace pollution.
 */
#undef vector
#undef pixel
#undef bool
#define VECTYPE        __vector unsigned char
#define SPLAT(p)       vec_splat(vec_ld(0, p), 0)
#define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
#define VEC_OR(v1, v2) ((v1) | (v2))
/* altivec.h may redefine the bool macro as vector type.
 * Reset it to POSIX semantics. */
#define bool _Bool
#elif defined __SSE2__
#include <emmintrin.h>
#define VECTYPE        __m128i
#define SPLAT(p)       _mm_set1_epi8(*(p))
#define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
#define VEC_OR(v1, v2) (_mm_or_si128(v1, v2))
#else
#define VECTYPE        unsigned long
#define SPLAT(p)       (*(p) * (~0UL / 255))
#define ALL_EQ(v1, v2) ((v1) == (v2))
#define VEC_OR(v1, v2) ((v1) | (v2))
#endif

// support for calling functions before main code is executed.
#if defined(_MSC_VER)
    #pragma section(".CRT$XCU",read)
    #define INITIALIZER2_(f,p) \
        static void f(void); \
        __declspec(allocate(".CRT$XCU")) void (*f##_)(void) = f; \
        __pragma(comment(linker,"/include:" p #f "_")) \
        static void f(void)
    #ifdef _WIN64
        #define INITIALIZER(f) INITIALIZER2_(f,"")
    #else
        #define INITIALIZER(f) INITIALIZER2_(f,"_")
    #endif
#else
    #define INITIALIZER(f) \
        static void f(void) __attribute__((constructor)); \
        static void f(void)
#endif

#endif