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/*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/* FreeBSD/ia64-specific system call handling. */
#include <sys/ptrace.h>
#include <sys/syscall.h>
#include <machine/reg.h>
#include <stdio.h>
#include "truss.h"
#include "syscalls.h"
static int
ia64_fetch_args(struct trussinfo *trussinfo, u_int narg)
{
struct reg regs;
struct current_syscall *cs;
unsigned long *parm_offset;
lwpid_t tid;
int i;
tid = trussinfo->curthread->tid;
cs = &trussinfo->curthread->cs;
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 redirections --
* SYS_syscall, and SYS___syscall. The former is the old syscall()
* routine, basically; the latter is for quad-aligned arguments.
*
* The system call argument count and code from ptrace() already
* account for these, but we need to skip over %rax if it contains
* either of these values.
*/
switch (regs.r_scratch.gr15) {
case SYS_syscall:
case SYS___syscall:
parm_offset++;
break;
}
memcpy(cs->args, parm_offset, narg * sizeof(long));
return (0);
}
static int
ia64_fetch_retval(struct trussinfo *trussinfo, long *retval, int *errorp)
{
struct reg regs;
lwpid_t tid;
tid = trussinfo->curthread->tid;
if (ptrace(PT_GETREGS, tid, (caddr_t)®s, 0) < 0) {
fprintf(trussinfo->outfile, "-- CANNOT READ REGISTERS --\n");
return (-1);
}
retval[0] = regs.r_scratch.gr8;
retval[1] = regs.r_scratch.gr9;
*errorp = (regs.r_scratch.gr10 != 0) ? 1 : 0;
return (0);
}
static struct procabi ia64_fbsd = {
"FreeBSD ELF64",
syscallnames,
nitems(syscallnames),
ia64_fetch_args,
ia64_fetch_retval
};
PROCABI(ia64_fbsd);
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