diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/ChangeLog | 6 | ||||
| -rw-r--r-- | include/callback.h | 26 |
2 files changed, 29 insertions, 3 deletions
diff --git a/include/ChangeLog b/include/ChangeLog index cda5da0..02cf6f0 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,9 @@ +Wed Nov 26 11:39:30 1997 Doug Evans <devans@canuck.cygnus.com> + + * callback.h (CB_SYSCALL): Change byte count arguments to + {read,write}_mem to `int'. New member `magic'. + (CB_SYSCALL_MAGIC,CB_SYSCALL_INIT): New macros. + Tue Nov 25 01:35:52 1997 Doug Evans <devans@seba.cygnus.com> * callback.h (struct stat): Move forward decl up. diff --git a/include/callback.h b/include/callback.h index 6b700fe..d2847cc 100644 --- a/include/callback.h +++ b/include/callback.h @@ -203,10 +203,30 @@ typedef struct cb_syscall { PTR p2; long x1,x2; - /* Callbacks for reading/writing memory (e.g. for read/write syscalls). */ - unsigned long (*read_mem) PARAMS ((host_callback *, struct cb_syscall *, unsigned long taddr, char *buf, unsigned long bytes)); - unsigned long (*write_mem) PARAMS ((host_callback *, struct cb_syscall *, unsigned long taddr, const char *buf, unsigned long bytes)); + /* Callbacks for reading/writing memory (e.g. for read/write syscalls). + ??? long or unsigned long might be better to use for the `count' + argument here. We mimic sim_{read,write} for now. Be careful to + test any changes with -Wall -Werror, mixed signed comparisons + will get you. */ + int (*read_mem) PARAMS ((host_callback *, struct cb_syscall *, + unsigned long taddr, char *buf, int bytes)); + int (*write_mem) PARAMS ((host_callback *, struct cb_syscall *, + unsigned long taddr, const char *buf, int bytes)); + + /* For sanity checking, should be last entry. */ + int magic; } CB_SYSCALL; + +/* Magic number sanity checker. */ +#define CB_SYSCALL_MAGIC 0x12344321 + +/* Macro to initialize CB_SYSCALL. Called first, before filling in + any fields. */ +#define CB_SYSCALL_INIT(sc) \ +do { \ + memset ((sc), 0, sizeof (*(sc))); \ + (sc)->magic = CB_SYSCALL_MAGIC; \ +} while (0) /* Return codes for various interface routines. */ |