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Add support for truss'ing Linux/x86_64 binaries under amd64.

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Prodding by:	xmj
This commit is contained in:
jhb 2016-06-09 02:21:07 +00:00
parent 5a0157b1f9
commit e65b37c809
2 changed files with 105 additions and 0 deletions
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1
usr.bin/truss/Makefile
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@ -18,6 +18,7 @@ ABIS+= cloudabi64
ABIS+= i386-linux
.endif
.if ${MACHINE_CPUARCH} == "amd64"
ABIS+= amd64-linux
ABIS+= amd64-linux32
ABIS+= freebsd32
ABIS+= cloudabi64

104
usr.bin/truss/amd64-linux.c Normal file
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@ -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)&regs, 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)&regs, 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);