48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/*
|
|
* See i386-fbsd.c for copyright and license terms.
|
|
*
|
|
* System call arguments come in several flavours:
|
|
* Hex -- values that should be printed in hex (addresses)
|
|
* Octal -- Same as above, but octal
|
|
* Int -- normal integer values (file descriptors, for example)
|
|
* String -- pointers to sensible data. Note that we treat read() and
|
|
* write() arguments as such, even though they may *not* be
|
|
* printable data.
|
|
* Ptr -- pointer to some specific structure. Just print as hex for now.
|
|
* Quad -- a double-word value. e.g., lseek(int, offset_t, int)
|
|
* Stat -- a pointer to a stat buffer. Currently unused.
|
|
* Ioctl -- an ioctl command. Woefully limited.
|
|
*
|
|
* In addition, the pointer types (String, Ptr) may have OUT masked in --
|
|
* this means that the data is set on *return* from the system call -- or
|
|
* IN (meaning that the data is passed *into* the system call).
|
|
*/
|
|
/*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
enum Argtype { None = 1, Hex, Octal, Int, String, Ptr, Stat, Ioctl, Quad,
|
|
Signal };
|
|
|
|
#define ARG_MASK 0xff
|
|
#define OUT 0x100
|
|
#define IN /*0x20*/0
|
|
|
|
struct syscall_args {
|
|
enum Argtype type;
|
|
int offset;
|
|
};
|
|
|
|
struct syscall {
|
|
char *name;
|
|
int ret_type; /* 0, 1, or 2 return values */
|
|
int nargs; /* actual number of meaningful arguments */
|
|
/* Hopefully, no syscalls with > 10 args */
|
|
struct syscall_args args[10];
|
|
};
|
|
|
|
struct syscall *get_syscall(const char*);
|
|
char *get_string(int, void*, int);
|
|
char *print_arg(int, struct syscall_args *, unsigned long*);
|
|
void print_syscall(FILE *, const char *, int, char **);
|