Author: kib Date: Fri Oct 2 13:30:56 2015 New Revision: 288493 URL: https://svnweb.freebsd.org/changeset/base/288493
Log: Add aarch64 support to truss(1). Reviewed by: jhb Discussed with: emaste (license) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D3750 Added: head/usr.bin/truss/aarch64-fbsd.c (contents, props changed) Modified: head/usr.bin/Makefile Modified: head/usr.bin/Makefile ============================================================================== --- head/usr.bin/Makefile Fri Oct 2 13:25:59 2015 (r288492) +++ head/usr.bin/Makefile Fri Oct 2 13:30:56 2015 (r288493) @@ -266,10 +266,8 @@ SUBDIR+= iscsictl .if ${MK_KDUMP} != "no" SUBDIR+= kdump -.if ${MACHINE_ARCH} != "aarch64" # ARM64TODO truss does not build SUBDIR+= truss .endif -.endif .if ${MK_KERBEROS_SUPPORT} != "no" SUBDIR+= compile_et Added: head/usr.bin/truss/aarch64-fbsd.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/usr.bin/truss/aarch64-fbsd.c Fri Oct 2 13:30:56 2015 (r288493) @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2015 The FreeBSD Foundation + * + * Portions of this software were developed by Konstantin Belousov + * under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* FreeBSD/arm64-specific system call handling. */ + +#include <sys/ptrace.h> +#include <sys/syscall.h> + +#include <machine/reg.h> +#include <machine/armreg.h> +#include <machine/ucontext.h> + +#include <stdio.h> + +#include "truss.h" + +extern const char *syscallnames[]; /* silence compiler */ +#include "syscalls.h" + +static int +aarch64_fetch_args(struct trussinfo *trussinfo, u_int narg) +{ + struct reg regs; + struct current_syscall *cs; + lwpid_t tid; + u_int i, reg, syscall_num; + + 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 (-1); + } + + /* + * 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 the first argument. + */ + syscall_num = regs.x[8]; + if (syscall_num == SYS_syscall || syscall_num == SYS___syscall) { + reg = 1; + syscall_num = regs.x[0]; + } else { + reg = 0; + } + + for (i = 0; i < narg && reg < 8; i++, reg++) + cs->args[i] = regs.x[reg]; + return (0); +} + +static int +aarch64_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.x[0]; + retval[1] = regs.x[1]; + *errorp = !!(regs.spsr & PSR_C); + return (0); +} + +static struct procabi aarch64_fbsd = { + "FreeBSD ELF64", + syscallnames, + nitems(syscallnames), + aarch64_fetch_args, + aarch64_fetch_retval +}; + +PROCABI(aarch64_fbsd); _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
