diff options
Diffstat (limited to 'usr.bin/truss/ia64-fbsd.c')
| -rw-r--r-- | usr.bin/truss/ia64-fbsd.c | 314 |
1 files changed, 0 insertions, 314 deletions
diff --git a/usr.bin/truss/ia64-fbsd.c b/usr.bin/truss/ia64-fbsd.c deleted file mode 100644 index 2218fe5..0000000 --- a/usr.bin/truss/ia64-fbsd.c +++ /dev/null @@ -1,314 +0,0 @@ -/* - * Copyright 1997 Sean Eric Fagan - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Sean Eric Fagan - * 4. Neither the name of the author may be used to endorse or promote - * products derived from this software without specific prior written - * permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef lint -static const char rcsid[] = - "$FreeBSD$"; -#endif /* not lint */ - -/* - * FreeBSD/ia64-specific system call handling. This is probably the most - * complex part of the entire truss program, although I've got lots of - * it handled relatively cleanly now. The system call names are generated - * automatically, thanks to /usr/src/sys/kern/syscalls.master. The - * names used for the various structures are confusing, I sadly admit. - */ - -#include <sys/types.h> -#include <sys/ptrace.h> -#include <sys/syscall.h> - -#include <machine/reg.h> - -#include <errno.h> -#include <fcntl.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include <unistd.h> - -#include "truss.h" -#include "syscall.h" -#include "extern.h" - -#include "syscalls.h" - -static int nsyscalls = sizeof(syscallnames) / sizeof(syscallnames[0]); - -/* - * This is what this particular file uses to keep track of a system call. - * It is probably not quite sufficient -- I can probably use the same - * structure for the various syscall personalities, and I also probably - * need to nest system calls (for signal handlers). - * - * 'struct syscall' describes the system call; it may be NULL, however, - * if we don't know about this particular system call yet. - */ -struct freebsd_syscall { - struct syscall *sc; - const char *name; - int number; - unsigned long *args; - int nargs; /* number of arguments -- *not* number of words! */ - char **s_args; /* the printable arguments */ -}; - -static struct freebsd_syscall * -alloc_fsc(void) -{ - - return (malloc(sizeof(struct freebsd_syscall))); -} - -/* Clear up and free parts of the fsc structure. */ -static void -free_fsc(struct freebsd_syscall *fsc) -{ - int i; - - free(fsc->args); - if (fsc->s_args) { - for (i = 0; i < fsc->nargs; i++) - free(fsc->s_args[i]); - free(fsc->s_args); - } - free(fsc); -} - -/* - * Called when a process has entered a system call. nargs is the - * number of words, not number of arguments (a necessary distinction - * in some cases). Note that if the STOPEVENT() code in ia64/ia64/trap.c - * is ever changed these functions need to keep up. - */ - -void -ia64_syscall_entry(struct trussinfo *trussinfo, int nargs) -{ - struct reg regs; - struct freebsd_syscall *fsc; - struct syscall *sc; - unsigned long *parm_offset; - lwpid_t tid; - int i, syscall_num; - - tid = trussinfo->curthread->tid; - - if (ptrace(PT_GETREGS, tid, (caddr_t)®s, 0) < 0) { - fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n"); - return; - } - parm_offset = ®s.r_scratch.gr16; - - /* - * FreeBSD has two special kinds of system call redirctions -- - * SYS_syscall, and SYS___syscall. The former is the old syscall() - * routine, basically; the latter is for quad-aligned arguments. - */ - syscall_num = regs.r_scratch.gr15; /* XXX double-check. */ - if (syscall_num == SYS_syscall || syscall_num == SYS___syscall) - syscall_num = (int)*parm_offset++; - - fsc = alloc_fsc(); - if (fsc == NULL) - return; - fsc->number = syscall_num; - fsc->name = (syscall_num < 0 || syscall_num >= nsyscalls) ? - NULL : syscallnames[syscall_num]; - if (!fsc->name) { - fprintf(trussinfo->outfile, "-- UNKNOWN SYSCALL %d --\n", - syscall_num); - } - - if (fsc->name && (trussinfo->flags & FOLLOWFORKS) && - (strcmp(fsc->name, "fork") == 0 || - strcmp(fsc->name, "rfork") == 0 || - strcmp(fsc->name, "vfork") == 0)) - trussinfo->curthread->in_fork = 1; - - if (nargs == 0) - return; - - fsc->args = malloc((1 + nargs) * sizeof(unsigned long)); - memcpy(fsc->args, parm_offset, nargs * sizeof(long)); - - sc = get_syscall(fsc->name); - if (sc) - fsc->nargs = sc->nargs; - else { -#if DEBUG - fprintf(trussinfo->outfile, "unknown syscall %s -- setting " - "args to %d\n", fsc->name, nargs); -#endif - fsc->nargs = nargs; - } - - fsc->s_args = calloc(1, (1 + fsc->nargs) * sizeof(char *)); - fsc->sc = sc; - - /* - * At this point, we set up the system call arguments. - * We ignore any OUT ones, however -- those are arguments that - * are set by the system call, and so are probably meaningless - * now. This doesn't currently support arguments that are - * passed in *and* out, however. - */ - - if (fsc->name) { -#if DEBUG - fprintf(stderr, "syscall %s(", fsc->name); -#endif - for (i = 0; i < fsc->nargs; i++) { -#if DEBUG - fprintf(stderr, "0x%x%s", sc ? - fsc->args[sc->args[i].offset] : fsc->args[i], - i < (fsc->nargs - 1) ? "," : ""); -#endif - if (sc && !(sc->args[i].type & OUT)) { - fsc->s_args[i] = print_arg(&sc->args[i], - fsc->args, 0, trussinfo); - } - } -#if DEBUG - fprintf(stderr, ")\n"); -#endif - } - -#if DEBUG - fprintf(trussinfo->outfile, "\n"); -#endif - - if (fsc->name != NULL && (strcmp(fsc->name, "execve") == 0 || - strcmp(fsc->name, "exit") == 0)) { - /* - * XXX - * This could be done in a more general - * manner but it still wouldn't be very pretty. - */ - if (strcmp(fsc->name, "execve") == 0) { - if ((trussinfo->flags & EXECVEARGS) == 0) { - if (fsc->s_args[1]) { - free(fsc->s_args[1]); - fsc->s_args[1] = NULL; - } - } - if ((trussinfo->flags & EXECVEENVS) == 0) { - if (fsc->s_args[2]) { - free(fsc->s_args[2]); - fsc->s_args[2] = NULL; - } - } - } - } - trussinfo->curthread->fsc = fsc; -} - -/* - * And when the system call is done, we handle it here. - * Currently, no attempt is made to ensure that the system calls - * match -- this needs to be fixed (and is, in fact, why S_SCX includes - * the system call number instead of, say, an error status). - */ - -long -ia64_syscall_exit(struct trussinfo *trussinfo, int syscall_num __unused) -{ - struct reg regs; - struct freebsd_syscall *fsc; - struct syscall *sc; - lwpid_t tid; - long retval; - int errorp, i; - - if (trussinfo->curthread->fsc == NULL) - return (-1); - - tid = trussinfo->curthread->tid; - - if (ptrace(PT_GETREGS, tid, (caddr_t)®s, 0) < 0) { - fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n"); - return (-1); - } - - retval = regs.r_scratch.gr8; - errorp = (regs.r_scratch.gr10 != 0) ? 1 : 0; - - /* - * This code, while simpler than the initial versions I used, could - * stand some significant cleaning. - */ - - fsc = trussinfo->curthread->fsc; - sc = fsc->sc; - if (!sc) { - for (i = 0; i < fsc->nargs; i++) - asprintf(&fsc->s_args[i], "0x%lx", fsc->args[i]); - } else { - /* - * Here, we only look for arguments that have OUT masked in -- - * otherwise, they were handled in the syscall_entry function. - */ - for (i = 0; i < sc->nargs; i++) { - char *temp; - if (sc->args[i].type & OUT) { - /* - * If an error occurred, then don't bother - * getting the data; it may not be valid. - */ - if (errorp) { - asprintf(&temp, "0x%lx", - fsc->args[sc->args[i].offset]); - } else { - temp = print_arg(&sc->args[i], - fsc->args, retval, trussinfo); - } - fsc->s_args[i] = temp; - } - } - } - - if (fsc->name != NULL && (strcmp(fsc->name, "execve") == 0 || - strcmp(fsc->name, "exit") == 0)) - trussinfo->curthread->in_syscall = 1; - - /* - * It would probably be a good idea to merge the error handling, - * but that complicates things considerably. - */ - - print_syscall_ret(trussinfo, fsc->name, fsc->nargs, fsc->s_args, errorp, - retval, fsc->sc); - free_fsc(fsc); - - return (retval); -} |
