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wine-wine/dlls/msvcrt/misc.c

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/*
* msvcrt.dll misc functions
*
* Copyright 2000 Jon Griffiths
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdlib.h>
#include "msvcrt.h"
#include "wine/debug.h"
#include "ntsecapi.h"
#include "windows.h"
#include "wine/asm.h"
WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
static unsigned int output_format;
/*********************************************************************
* _beep (MSVCRT.@)
*/
void CDECL MSVCRT__beep( unsigned int freq, unsigned int duration)
{
TRACE(":Freq %d, Duration %d\n",freq,duration);
Beep(freq, duration);
}
/*********************************************************************
* srand (MSVCRT.@)
*/
void CDECL MSVCRT_srand( unsigned int seed )
{
thread_data_t *data = msvcrt_get_thread_data();
data->random_seed = seed;
}
/*********************************************************************
* rand (MSVCRT.@)
*/
int CDECL MSVCRT_rand(void)
{
thread_data_t *data = msvcrt_get_thread_data();
/* this is the algorithm used by MSVC, according to
* http://en.wikipedia.org/wiki/List_of_pseudorandom_number_generators */
data->random_seed = data->random_seed * 214013 + 2531011;
return (data->random_seed >> 16) & MSVCRT_RAND_MAX;
}
/*********************************************************************
* rand_s (MSVCRT.@)
*/
int CDECL MSVCRT_rand_s(unsigned int *pval)
{
if (!pval || !RtlGenRandom(pval, sizeof(*pval)))
{
*MSVCRT__errno() = MSVCRT_EINVAL;
return MSVCRT_EINVAL;
}
return 0;
}
/*********************************************************************
* _sleep (MSVCRT.@)
*/
void CDECL MSVCRT__sleep(MSVCRT_ulong timeout)
{
TRACE("_sleep for %d milliseconds\n",timeout);
Sleep((timeout)?timeout:1);
}
/*********************************************************************
* _lfind (MSVCRT.@)
*/
void* CDECL _lfind(const void* match, const void* start,
unsigned int* array_size, unsigned int elem_size,
int (CDECL *cf)(const void*,const void*) )
{
unsigned int size = *array_size;
if (size)
do
{
if (cf(match, start) == 0)
return (void *)start; /* found */
start = (const char *)start + elem_size;
} while (--size);
return NULL;
}
/*********************************************************************
* _lfind_s (MSVCRT.@)
*/
void* CDECL _lfind_s(const void* match, const void* start,
unsigned int* array_size, unsigned int elem_size,
int (CDECL *cf)(void*,const void*,const void*),
void* context)
{
unsigned int size;
if (!MSVCRT_CHECK_PMT(match != NULL)) return NULL;
if (!MSVCRT_CHECK_PMT(array_size != NULL)) return NULL;
if (!MSVCRT_CHECK_PMT(start != NULL || *array_size == 0)) return NULL;
if (!MSVCRT_CHECK_PMT(cf != NULL)) return NULL;
if (!MSVCRT_CHECK_PMT(elem_size != 0)) return NULL;
size = *array_size;
if (size)
do
{
if (cf(context, match, start) == 0)
return (void *)start; /* found */
start = (const char *)start + elem_size;
} while (--size);
return NULL;
}
/*********************************************************************
* _lsearch (MSVCRT.@)
*/
void* CDECL _lsearch(const void* match, void* start,
unsigned int* array_size, unsigned int elem_size,
int (CDECL *cf)(const void*,const void*) )
{
unsigned int size = *array_size;
if (size)
do
{
if (cf(match, start) == 0)
return start; /* found */
start = (char*)start + elem_size;
} while (--size);
/* not found, add to end */
memcpy(start, match, elem_size);
array_size[0]++;
return start;
}
/*********************************************************************
* bsearch_s (msvcrt.@)
*/
void* CDECL MSVCRT_bsearch_s(const void *key, const void *base,
MSVCRT_size_t nmemb, MSVCRT_size_t size,
int (__cdecl *compare)(void *, const void *, const void *), void *ctx)
{
ssize_t min = 0;
ssize_t max = nmemb - 1;
if (!MSVCRT_CHECK_PMT(size != 0)) return NULL;
if (!MSVCRT_CHECK_PMT(compare != NULL)) return NULL;
while (min <= max)
{
ssize_t cursor = min + (max - min) / 2;
int ret = compare(ctx, key,(const char *)base+(cursor*size));
if (!ret)
return (char*)base+(cursor*size);
if (ret < 0)
max = cursor - 1;
else
min = cursor + 1;
}
return NULL;
}
static int CDECL compare_wrapper(void *ctx, const void *e1, const void *e2)
{
int (__cdecl *compare)(const void *, const void *) = ctx;
return compare(e1, e2);
}
/*********************************************************************
* bsearch (msvcrt.@)
*/
void* CDECL MSVCRT_bsearch(const void *key, const void *base, MSVCRT_size_t nmemb,
MSVCRT_size_t size, int (__cdecl *compar)(const void *, const void *))
{
return MSVCRT_bsearch_s(key, base, nmemb, size, compare_wrapper, compar);
}
/*********************************************************************
* _chkesp (MSVCRT.@)
*
* Trap to a debugger if the value of the stack pointer has changed.
*
* PARAMS
* None.
*
* RETURNS
* Does not return.
*
* NOTES
* This function is available for iX86 only.
*
* When VC++ generates debug code, it stores the value of the stack pointer
* before calling any external function, and checks the value following
* the call. It then calls this function, which will trap if the values are
* not the same. Usually this means that the prototype used to call
* the function is incorrect. It can also mean that the .spec entry has
* the wrong calling convention or parameters.
*/
#ifdef __i386__
# ifdef __GNUC__
__ASM_GLOBAL_FUNC(_chkesp,
"jnz 1f\n\t"
"ret\n"
"1:\tpushl %ebp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
"movl %esp,%ebp\n\t"
__ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
"subl $12,%esp\n\t"
"pushl %eax\n\t"
"pushl %ecx\n\t"
"pushl %edx\n\t"
"call " __ASM_NAME("MSVCRT_chkesp_fail") "\n\t"
"popl %edx\n\t"
"popl %ecx\n\t"
"popl %eax\n\t"
"leave\n\t"
__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
__ASM_CFI(".cfi_same_value %ebp\n\t")
"ret")
void CDECL DECLSPEC_HIDDEN MSVCRT_chkesp_fail(void)
{
ERR("Stack pointer incorrect after last function call - Bad prototype/spec entry?\n");
DebugBreak();
}
# else /* __GNUC__ */
/**********************************************************************/
void CDECL _chkesp(void)
{
}
# endif /* __GNUC__ */
#endif /* __i386__ */
static inline void swap(char *l, char *r, MSVCRT_size_t size)
{
char tmp;
while(size--) {
tmp = *l;
*l++ = *r;
*r++ = tmp;
}
}
static void small_sort(void *base, MSVCRT_size_t nmemb, MSVCRT_size_t size,
int (CDECL *compar)(void *, const void *, const void *), void *context)
{
MSVCRT_size_t e, i;
char *max, *p;
for(e=nmemb; e>1; e--) {
max = base;
for(i=1; i<e; i++) {
p = (char*)base + i*size;
if(compar(context, p, max) > 0)
max = p;
}
if(p != max)
swap(p, max, size);
}
}
static void quick_sort(void *base, MSVCRT_size_t nmemb, MSVCRT_size_t size,
int (CDECL *compar)(void *, const void *, const void *), void *context)
{
MSVCRT_size_t stack_lo[8*sizeof(MSVCRT_size_t)], stack_hi[8*sizeof(MSVCRT_size_t)];
MSVCRT_size_t beg, end, lo, hi, med;
int stack_pos;
stack_pos = 0;
stack_lo[stack_pos] = 0;
stack_hi[stack_pos] = nmemb-1;
#define X(i) ((char*)base+size*(i))
while(stack_pos >= 0) {
beg = stack_lo[stack_pos];
end = stack_hi[stack_pos--];
if(end-beg < 8) {
small_sort(X(beg), end-beg+1, size, compar, context);
continue;
}
lo = beg;
hi = end;
med = lo + (hi-lo+1)/2;
if(compar(context, X(lo), X(med)) > 0)
swap(X(lo), X(med), size);
if(compar(context, X(lo), X(hi)) > 0)
swap(X(lo), X(hi), size);
if(compar(context, X(med), X(hi)) > 0)
swap(X(med), X(hi), size);
lo++;
hi--;
while(1) {
while(lo <= hi) {
if(lo!=med && compar(context, X(lo), X(med))>0)
break;
lo++;
}
while(med != hi) {
if(compar(context, X(hi), X(med)) <= 0)
break;
hi--;
}
if(hi < lo)
break;
swap(X(lo), X(hi), size);
if(hi == med)
med = lo;
lo++;
hi--;
}
while(hi > beg) {
if(hi!=med && compar(context, X(hi), X(med))!=0)
break;
hi--;
}
if(hi-beg >= end-lo) {
stack_lo[++stack_pos] = beg;
stack_hi[stack_pos] = hi;
stack_lo[++stack_pos] = lo;
stack_hi[stack_pos] = end;
}else {
stack_lo[++stack_pos] = lo;
stack_hi[stack_pos] = end;
stack_lo[++stack_pos] = beg;
stack_hi[stack_pos] = hi;
}
}
#undef X
}
/*********************************************************************
* qsort_s (MSVCRT.@)
*
* This function is trying to sort data doing identical comparisons
* as native does. There are still cases where it behaves differently.
*/
void CDECL MSVCRT_qsort_s(void *base, MSVCRT_size_t nmemb, MSVCRT_size_t size,
int (CDECL *compar)(void *, const void *, const void *), void *context)
{
const MSVCRT_size_t total_size = nmemb*size;
if (!MSVCRT_CHECK_PMT(base != NULL || (base == NULL && nmemb == 0))) return;
if (!MSVCRT_CHECK_PMT(size > 0)) return;
if (!MSVCRT_CHECK_PMT(compar != NULL)) return;
if (total_size / size != nmemb) return;
if (nmemb < 2) return;
quick_sort(base, nmemb, size, compar, context);
}
/*********************************************************************
* qsort (MSVCRT.@)
*/
void CDECL MSVCRT_qsort(void *base, MSVCRT_size_t nmemb, MSVCRT_size_t size,
int (CDECL *compar)(const void*, const void*))
{
MSVCRT_qsort_s(base, nmemb, size, compare_wrapper, compar);
}
/*********************************************************************
* _get_output_format (MSVCRT.@)
*/
unsigned int CDECL MSVCRT__get_output_format(void)
{
return output_format;
}
/*********************************************************************
* _set_output_format (MSVCRT.@)
*/
unsigned int CDECL MSVCRT__set_output_format(unsigned int new_output_format)
{
unsigned int ret = output_format;
if(!MSVCRT_CHECK_PMT(new_output_format==0 || new_output_format==MSVCRT__TWO_DIGIT_EXPONENT))
return ret;
output_format = new_output_format;
return ret;
}
/*********************************************************************
* _resetstkoflw (MSVCRT.@)
*/
int CDECL MSVCRT__resetstkoflw(void)
{
int stack_addr;
DWORD oldprot;
/* causes stack fault that updates NtCurrentTeb()->Tib.StackLimit */
return VirtualProtect(&stack_addr, 1, PAGE_GUARD|PAGE_READWRITE, &oldprot);
}
#if _MSVCR_VER>=80 && _MSVCR_VER<=90
/*********************************************************************
* _decode_pointer (MSVCR80.@)
*/
void * CDECL MSVCRT_decode_pointer(void * ptr)
{
return DecodePointer(ptr);
}
/*********************************************************************
* _encode_pointer (MSVCR80.@)
*/
void * CDECL MSVCRT_encode_pointer(void * ptr)
{
return EncodePointer(ptr);
}
#endif /* _MSVCR_VER>=80 && _MSVCR_VER<=90 */
#if _MSVCR_VER>=80 && _MSVCR_VER<=100
/*********************************************************************
* _encoded_null (MSVCR80.@)
*/
void * CDECL _encoded_null(void)
{
TRACE("\n");
return EncodePointer(NULL);
}
#endif
#if _MSVCR_VER>=70
/*********************************************************************
* _CRT_RTC_INIT (MSVCR70.@)
*/
void* CDECL _CRT_RTC_INIT(void *unk1, void *unk2, int unk3, int unk4, int unk5)
{
TRACE("%p %p %x %x %x\n", unk1, unk2, unk3, unk4, unk5);
return NULL;
}
#endif
#if _MSVCR_VER>=80
/*********************************************************************
* _CRT_RTC_INITW (MSVCR80.@)
*/
void* CDECL _CRT_RTC_INITW(void *unk1, void *unk2, int unk3, int unk4, int unk5)
{
TRACE("%p %p %x %x %x\n", unk1, unk2, unk3, unk4, unk5);
return NULL;
}
/*********************************************************************
* _byteswap_ushort (MSVCR80.@)
*/
unsigned short CDECL _byteswap_ushort(unsigned short s)
{
return (s<<8) + (s>>8);
}
/*********************************************************************
* _byteswap_ulong (MSVCR80.@)
*/
ULONG CDECL MSVCRT__byteswap_ulong(ULONG l)
{
return (l<<24) + ((l<<8)&0xFF0000) + ((l>>8)&0xFF00) + (l>>24);
}
/*********************************************************************
* _byteswap_uint64 (MSVCR80.@)
*/
unsigned __int64 CDECL _byteswap_uint64(unsigned __int64 i)
{
return (i<<56) + ((i&0xFF00)<<40) + ((i&0xFF0000)<<24) + ((i&0xFF000000)<<8) +
((i>>8)&0xFF000000) + ((i>>24)&0xFF0000) + ((i>>40)&0xFF00) + (i>>56);
}
#endif /* _MSVCR_VER>=80 */
#if _MSVCR_VER>=110
/*********************************************************************
* __crtGetShowWindowMode (MSVCR110.@)
*/
int CDECL MSVCR110__crtGetShowWindowMode(void)
{
STARTUPINFOW si;
GetStartupInfoW(&si);
TRACE("flags=%x window=%d\n", si.dwFlags, si.wShowWindow);
return si.dwFlags & STARTF_USESHOWWINDOW ? si.wShowWindow : SW_SHOWDEFAULT;
}
/*********************************************************************
* __crtInitializeCriticalSectionEx (MSVCR110.@)
*/
BOOL CDECL MSVCR110__crtInitializeCriticalSectionEx(
CRITICAL_SECTION *cs, DWORD spin_count, DWORD flags)
{
TRACE("(%p %x %x)\n", cs, spin_count, flags);
return InitializeCriticalSectionEx(cs, spin_count, flags);
}
#endif /* _MSVCR_VER>=110 */
#if _MSVCR_VER>=120
/*********************************************************************
* _vacopy (MSVCR120.@)
*/
void CDECL MSVCR120__vacopy(__ms_va_list *dest, __ms_va_list src)
{
__ms_va_copy(*dest, src);
}
#endif
#if _MSVCR_VER>=80
/*********************************************************************
* _crt_debugger_hook (MSVCR80.@)
*/
void CDECL MSVCRT__crt_debugger_hook(int reserved)
{
WARN("(%x)\n", reserved);
}
#endif
#if _MSVCR_VER>=110
/*********************************************************************
* __crtUnhandledException (MSVCR110.@)
*/
LONG CDECL MSVCRT__crtUnhandledException(EXCEPTION_POINTERS *ep)
{
TRACE("(%p)\n", ep);
SetUnhandledExceptionFilter(NULL);
return UnhandledExceptionFilter(ep);
}
/* ?_Trace_agents@Concurrency@@YAXW4Agents_EventType@1@_JZZ */
void WINAPIV _Trace_agents(/*enum Concurrency::Agents_EventType*/int type, __int64 id, ...)
{
FIXME("(%d %s)\n", type, wine_dbgstr_longlong(id));
}
#endif
#if _MSVCR_VER>=120
/*********************************************************************
* __crtSleep (MSVCR120.@)
*/
void CDECL MSVCRT__crtSleep(DWORD timeout)
{
TRACE("(%u)\n", timeout);
Sleep(timeout);
}
/*********************************************************************
* _SetWinRTOutOfMemoryExceptionCallback (MSVCR120.@)
*/
void CDECL MSVCR120__SetWinRTOutOfMemoryExceptionCallback(void *callback)
{
FIXME("(%p): stub\n", callback);
}
#endif
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