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00047 #include "prim_type.h"
00048 #include "err.h"
00049 #include "mmio.h"
00050 #include "ckd_alloc.h"
00051
00052 #include <string.h>
00053 #include <stdlib.h>
00054
00055 #if defined(_WIN32) || defined(GNUWINCE)
00056 # ifdef GNUWINCE
00057 # include <sys/wcebase.h>
00058 # include <sys/wcetypes.h>
00059 # include <sys/wcememory.h>
00060 # include <sys/wcefile.h>
00061 # else
00062 # include <windows.h>
00063 # endif
00064 #elif defined(__ADSPBLACKFIN__) && !defined(__linux__)
00065 #else
00066 # include <unistd.h>
00067 # include <fcntl.h>
00068 # include <sys/stat.h>
00069 # include <sys/file.h>
00070 # include <sys/mman.h>
00071 #endif
00072
00073 #if defined(_WIN32_WCE) || defined(GNUWINCE)
00074 struct mmio_file_s {
00075 int dummy;
00076 };
00077
00078 void *
00079 mmio_file_read(const char *filename)
00080 {
00081 HANDLE ffm, fd;
00082 WCHAR *wfilename;
00083 void *rv;
00084 int len;
00085
00086 len = mbstowcs(NULL, filename, 0) + 1;
00087 wfilename = malloc(len * sizeof(WCHAR));
00088 mbstowcs(wfilename, filename, len);
00089
00090 if ((ffm =
00091 CreateFileForMappingW(wfilename, GENERIC_READ, FILE_SHARE_READ,
00092 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
00093 NULL)) == INVALID_HANDLE_VALUE) {
00094 E_ERROR("Failed to CreateFileForMapping(%s): %08x\n", filename,
00095 GetLastError());
00096 return NULL;
00097 }
00098 if ((fd =
00099 CreateFileMappingW(ffm, NULL, PAGE_READONLY, 0, 0, NULL)) == NULL) {
00100 E_ERROR("Failed to CreateFileMapping: %08x\n", GetLastError());
00101 CloseHandle(ffm);
00102 return NULL;
00103 }
00104 rv = MapViewOfFile(fd, FILE_MAP_READ, 0, 0, 0);
00105 free(wfilename);
00106 CloseHandle(ffm);
00107 CloseHandle(fd);
00108
00109 return rv;
00110 }
00111
00112 void
00113 mmio_file_unmap(mmio_file_t *mf)
00114 {
00115 if (!UnmapViewOfFile((void *)mf)) {
00116 E_ERROR("Failed to UnmapViewOfFile: %08x\n", GetLastError());
00117 }
00118 }
00119
00120 void
00121 mmio_file_unmap(mmio_file_t *mf)
00122 {
00123 if (!UnmapViewOfFile((void *)mf)) {
00124 E_ERROR("Failed to UnmapViewOfFile: %08x\n", GetLastError());
00125 }
00126 }
00127 #elif defined(WIN32)
00128 struct mmio_file_s {
00129 int dummy;
00130 };
00131
00132 mmio_file_t *
00133 mmio_file_read(const char *filename)
00134 {
00135 HANDLE ffm, fd;
00136 void *rv;
00137
00138 if ((ffm = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ,
00139 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
00140 NULL)) == INVALID_HANDLE_VALUE) {
00141 E_ERROR("Failed to CreateFile(%s): %08x\n",
00142 filename, GetLastError());
00143 return NULL;
00144 }
00145 if ((fd = CreateFileMapping(ffm, NULL,
00146 PAGE_READONLY, 0, 0, NULL)) == NULL) {
00147 E_ERROR("Failed to CreateFileMapping: %08x\n", GetLastError());
00148 CloseHandle(ffm);
00149 }
00150 rv = MapViewOfFile(fd, FILE_MAP_READ, 0, 0, 0);
00151 CloseHandle(ffm);
00152 CloseHandle(fd);
00153
00154 return (mmio_file_t *)rv;
00155 }
00156
00157 void
00158 mmio_file_unmap(mmio_file_t *mf)
00159 {
00160 if (!UnmapViewOfFile((void *)mf)) {
00161 E_ERROR("Failed to UnmapViewOfFile: %08x\n", GetLastError());
00162 }
00163 }
00164
00165 void *
00166 mmio_file_ptr(mmio_file_t *mf)
00167 {
00168 return (void *)mf;
00169 }
00170
00171 #else
00172 #if defined(__ADSPBLACKFIN__)
00173
00174 struct mmio_file_s {
00175 int dummy;
00176 };
00177
00178 mmio_file_t *
00179 mmio_file_read(const char *filename)
00180 {
00181 E_FATAL("mmio is not implemented on this platform!");
00182 return NULL;
00183 }
00184
00185 void
00186 mmio_file_unmap(mmio_file_t *mf)
00187 {
00188 E_FATAL("mmio is not implemented on this platform!");
00189 }
00190
00191 void *
00192 mmio_file_ptr(mmio_file_t *mf)
00193 {
00194 E_FATAL("mmio is not implemented on this platform!");
00195 return NULL;
00196 }
00197 #else
00198 struct mmio_file_s {
00199 void *ptr;
00200 size_t mapsize;
00201 };
00202
00203 mmio_file_t *
00204 mmio_file_read(const char *filename)
00205 {
00206 mmio_file_t *mf;
00207 struct stat buf;
00208 void *ptr;
00209 int fd;
00210 size_t pagesize;
00211
00212 if ((fd = open(filename, O_RDONLY)) == -1) {
00213 E_ERROR_SYSTEM("Failed to open %s", filename);
00214 return NULL;
00215 }
00216 if (fstat(fd, &buf) == -1) {
00217 E_ERROR_SYSTEM("Failed to stat %s", filename);
00218 return NULL;
00219 }
00220 ptr = mmap(NULL, buf.st_size, PROT_READ, MAP_SHARED, fd, 0);
00221 if (ptr == (void *)-1) {
00222 E_ERROR("Failed to mmap %d bytes", buf.st_size);
00223 return NULL;
00224 }
00225 close(fd);
00226 mf = ckd_calloc(1, sizeof(*mf));
00227 mf->ptr = ptr;
00228
00229 pagesize = getpagesize();
00230 mf->mapsize = (buf.st_size + pagesize - 1) / pagesize * pagesize;
00231
00232 return mf;
00233 }
00234
00235 void
00236 mmio_file_unmap(mmio_file_t *mf)
00237 {
00238 if (mf == NULL)
00239 return;
00240 if (munmap(mf->ptr, mf->mapsize) < 0) {
00241 E_ERROR_SYSTEM("Failed to unmap %ld bytes at %p", mf->mapsize, mf->ptr);
00242 }
00243 ckd_free(mf);
00244 }
00245
00246 void *
00247 mmio_file_ptr(mmio_file_t *mf)
00248 {
00249 return mf->ptr;
00250 }
00251 #endif
00252 #endif