Author: jhb Date: Thu Jun 9 02:21:07 2016 New Revision: 301715 URL: https://svnweb.freebsd.org/changeset/base/301715
Log: Add support for truss'ing Linux/x86_64 binaries under amd64. Prodding by: xmj Added: head/usr.bin/truss/amd64-linux.c (contents, props changed) Modified: head/usr.bin/truss/Makefile Modified: head/usr.bin/truss/Makefile ============================================================================== --- head/usr.bin/truss/Makefile Thu Jun 9 02:02:50 2016 (r301714) +++ head/usr.bin/truss/Makefile Thu Jun 9 02:21:07 2016 (r301715) @@ -18,6 +18,7 @@ ABIS+= cloudabi64 ABIS+= i386-linux .endif .if ${MACHINE_CPUARCH} == "amd64" +ABIS+= amd64-linux ABIS+= amd64-linux32 ABIS+= freebsd32 ABIS+= cloudabi64 Added: head/usr.bin/truss/amd64-linux.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/usr.bin/truss/amd64-linux.c Thu Jun 9 02:21:07 2016 (r301715) @@ -0,0 +1,104 @@ +/* + * 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$"); + +/* Linux/x86_64-specific system call handling. */ + +#include <sys/ptrace.h> + +#include <machine/reg.h> +#include <machine/psl.h> + +#include <stdio.h> +#include <sysdecode.h> + +#include "truss.h" + +static int +amd64_linux_fetch_args(struct trussinfo *trussinfo, u_int narg) +{ + struct reg regs; + struct current_syscall *cs; + lwpid_t tid; + + 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); + } + + switch (narg) { + default: + cs->args[5] = regs.r_r9; + case 5: + cs->args[4] = regs.r_r8; + case 4: + cs->args[3] = regs.r_rcx; + case 3: + cs->args[2] = regs.r_rdx; + case 2: + cs->args[1] = regs.r_rsi; + case 1: + cs->args[0] = regs.r_rdi; + } + + return (0); +} + +static int +amd64_linux_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_rax; + retval[1] = regs.r_rdx; + *errorp = !!(regs.r_rflags & PSL_C); + return (0); +} + +static struct procabi amd64_linux = { + "Linux ELF64", + SYSDECODE_ABI_LINUX, + amd64_linux_fetch_args, + amd64_linux_fetch_retval +}; + +PROCABI(amd64_linux); _______________________________________________ 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"