2005-05-27 15:57:00 +02:00
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/* Masks and flags for system calls. */
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#define SYSCALL_FUNC 0x0F /* mask for system call function */
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#define SYSCALL_FLAGS 0xF0 /* mask for system call flags */
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#define NON_BLOCKING 0x10 /* prevent blocking, return error */
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#define FRESH_ANSWER 0x20 /* ignore pending notifications as answer */
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/* (default behaviour for SENDREC calls) */
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2005-05-31 11:50:51 +02:00
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/* System calls (numbers passed when trapping to the kernel). */
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2005-05-27 15:57:00 +02:00
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#define ECHO 0 /* function code for echoing messages */
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#define SEND 1 /* function code for sending messages */
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#define RECEIVE 2 /* function code for receiving messages */
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#define SENDREC 3 /* function code for SEND + RECEIVE */
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#define NOTIFY 4 /* function code for notifications */
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2005-05-31 11:50:51 +02:00
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#if 0
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/* Bit map operations used to bits of simple bit mask. */
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#define set_bit(mask, n) ((mask) |= (1 << (n)))
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#define clear_bit(mask, n) ((mask) &= ~(1 << (n)))
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#define isset_bit(mask, n) ((mask) & (1 << (n)))
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#define empty_mask (0)
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#define filled_mask (~0)
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#endif
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/* Call masks indicating which system calls a process can make. */
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#define EMPTY_CALL_MASK (0)
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#define USER_CALL_MASK (1 << SENDREC)
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#define SYSTEM_CALL_MASK (~0)
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