diff options
Diffstat (limited to 'tools/iso/kernel.soso/random.c')
-rw-r--r-- | tools/iso/kernel.soso/random.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/tools/iso/kernel.soso/random.c b/tools/iso/kernel.soso/random.c new file mode 100644 index 00000000..c78501d8 --- /dev/null +++ b/tools/iso/kernel.soso/random.c @@ -0,0 +1,55 @@ +#include "random.h" +#include "devfs.h" +#include "device.h" +#include "common.h" +#include "process.h" +#include "sleep.h" + +static BOOL random_open(File *file, uint32 flags); +static int32 random_read(File *file, uint32 size, uint8 *buffer); + +void initializeRandom() { + Device device; + memset((uint8*)&device, 0, sizeof(Device)); + strcpy(device.name, "random"); + device.deviceType = FT_CharacterDevice; + device.open = random_open; + device.read = random_read; + + registerDevice(&device); +} + +static BOOL random_open(File *file, uint32 flags) { + return TRUE; +} + +static int32 random_read(File *file, uint32 size, uint8 *buffer) { + if (size == 0) { + return 0; + } + + //printkf("random_read: calling sleep\n"); + + //sleep(10000); + + //printkf("random_read: returned from sleep\n"); + + uint32 number = rand(); + + if (size == 1) { + *buffer = (uint8)number; + return 1; + } + else if (size == 2 || size == 3) { + *((uint16*)buffer) = (uint16)number; + return 2; + } + else if (size >= 4) { + //printkf("random_read: buffer is %x, writing %x to buffer\n", buffer, number); + + *((uint32*)buffer) = number; + return 4; + } + + return 0; +} |