1 /* 2 * See i386-fbsd.c for copyright and license terms. 3 * 4 * System call arguments come in several flavours: 5 * Hex -- values that should be printed in hex (addresses) 6 * Octal -- Same as above, but octal 7 * Int -- normal integer values (file descriptors, for example) 8 * String -- pointers to sensible data. Note that we treat read() and 9 * write() arguments as such, even though they may *not* be 10 * printable data. 11 * Ptr -- pointer to some specific structure. Just print as hex for now. 12 * Quad -- a double-word value. e.g., lseek(int, offset_t, int) 13 * Stat -- a pointer to a stat buffer. Currently unused. 14 * Ioctl -- an ioctl command. Woefully limited. 15 * 16 * In addition, the pointer types (String, Ptr) may have OUT masked in -- 17 * this means that the data is set on *return* from the system call -- or 18 * IN (meaning that the data is passed *into* the system call). 19 */ 20 /* 21 * $Id: syscall.h,v 1.2 1997/12/06 06:51:13 sef Exp $ 22 */ 23 24 enum Argtype { None = 1, Hex, Octal, Int, String, Ptr, Stat, Ioctl, Quad }; 25 26 #define ARG_MASK 0xff 27 #define OUT 0x100 28 #define IN /*0x20*/0 29 30 struct syscall_args { 31 enum Argtype type; 32 int offset; 33 }; 34 35 struct syscall { 36 char *name; 37 int ret_type; /* 0, 1, or 2 return values */ 38 int nargs; /* actual number of meaningful arguments */ 39 /* Hopefully, no syscalls with > 10 args */ 40 struct syscall_args args[10]; 41 }; 42 43 struct syscall *get_syscall(const char*); 44 char *get_string(int, void*, int); 45 char *print_arg(int, struct syscall_args *, unsigned long*); 46 void print_syscall(FILE *, const char *, int, char **); 47