ikvm-native/os.c

   1 /*
   2   Copyright (C) 2004, 2005 Jeroen Frijters
   3
   4   This software is provided 'as-is', without any express or implied
   5   warranty.  In no event will the authors be held liable for any damages
   6   arising from the use of this software.
   7
   8   Permission is granted to anyone to use this software for any purpose,
   9   including commercial applications, and to alter it and redistribute it
  10   freely, subject to the following restrictions:
  11
  12   1. The origin of this software must not be misrepresented; you must not
  13      claim that you wrote the original software. If you use this software
  14      in a product, an acknowledgment in the product documentation would be
  15      appreciated but is not required.
  16   2. Altered source versions must be plainly marked as such, and must not be
  17      misrepresented as being the original software.
  18   3. This notice may not be removed or altered from any source distribution.
  19
  20   Jeroen Frijters
  21   jeroen@frijters.net
  22
  23 */
  24 #ifdef _WIN32
  25         #include <windows.h>
  26         #include "jni.h"
  27
  28         JNIEXPORT void* JNICALL ikvm_LoadLibrary(char* psz)
  29         {
  30                 return LoadLibrary(psz);
  31         }
  32
  33         JNIEXPORT void JNICALL ikvm_FreeLibrary(HMODULE handle)
  34         {
  35                 FreeLibrary(handle);
  36         }
  37
  38         JNIEXPORT void* JNICALL ikvm_GetProcAddress(HMODULE handle, char* name, jint argc)
  39         {
  40 #ifdef _WIN64
  41                 return GetProcAddress(handle, name);
  42 #else
  43                 void* pfunc;
  44                 char buf[512];
  45                 if(strlen(name) > sizeof(buf) - 11)
  46                 {
  47                         return 0;
  48                 }
  49                 wsprintf(buf, "_%s@%d", name, argc);
  50                 pfunc = GetProcAddress(handle, buf);
  51                 if (pfunc)
  52                         return pfunc;
  53                 // If we didn't find the mangled name, try the unmangled name (this happens if you have an
  54                 // explicit EXPORT in the linker def).
  55                 return GetProcAddress(handle, name);
  56 #endif
  57         }
  58 #else
  59         #include <gmodule.h>
  60         #include <sys/types.h>
  61         #include <sys/mman.h>
  62         #include "jni.h"
  63
  64         void* JNICALL ikvm_LoadLibrary(char* psz);
  65
  66         JNIEXPORT void* JNICALL ikvm_LoadLibrary(char* psz)
  67         {
  68                 return g_module_open(psz, 0);
  69         }
  70
  71         void JNICALL ikvm_FreeLibrary(GModule* handle);
  72
  73         JNIEXPORT void JNICALL ikvm_FreeLibrary(GModule* handle)
  74         {
  75                 g_module_close(handle);
  76         }
  77
  78         void* JNICALL ikvm_GetProcAddress(GModule* handle, char* name, jint argc);
  79
  80         JNIEXPORT void* JNICALL ikvm_GetProcAddress(GModule* handle, char* name, jint argc)
  81         {
  82                 void *symbol;
  83
  84                 gboolean res = g_module_symbol(handle, name, &symbol);
  85
  86                 if (res)
  87                         return symbol;
  88                 else
  89                         return NULL;
  90         }
  91
  92         void* JNICALL ikvm_mmap(int fd, jboolean writeable, jboolean copy_on_write, jlong position, jint size);
  93
  94         JNIEXPORT void* JNICALL ikvm_mmap(int fd, jboolean writeable, jboolean copy_on_write, jlong position, jint size)
  95         {
  96                 return mmap(0, size, writeable ? PROT_WRITE | PROT_READ : PROT_READ, copy_on_write ? MAP_PRIVATE : MAP_SHARED, fd, position);
  97         }
  98
  99         int JNICALL ikvm_munmap(void* address, jint size);
 100
 101         JNIEXPORT int JNICALL ikvm_munmap(void* address, jint size)
 102         {
 103                 return munmap(address, size);
 104         }
 105
 106         int JNICALL ikvm_msync(void* address, jint size);
 107
 108         JNIEXPORT int JNICALL ikvm_msync(void* address, jint size)
 109         {
 110 #if defined(__native_client__) && defined(USE_NEWLIB)
 111                 g_assert_not_reached ();
 112                 return -1;
 113 #else
 114                 return msync(address, size, MS_SYNC);
 115 #endif
 116         }
 117 #endif