155 lines
4.1 KiB
C
155 lines
4.1 KiB
C
/*-
|
|
* Copyright (c) 2010 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Rui Paulo 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("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ptrace.h>
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
#include "_libproc.h"
|
|
|
|
int
|
|
proc_regget(struct proc_handle *phdl, proc_reg_t reg, unsigned long *regvalue)
|
|
{
|
|
struct reg regs;
|
|
|
|
if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
|
|
phdl->status == PS_IDLE) {
|
|
errno = ENOENT;
|
|
return (-1);
|
|
}
|
|
memset(®s, 0, sizeof(regs));
|
|
if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
|
|
return (-1);
|
|
switch (reg) {
|
|
case REG_PC:
|
|
#if defined(__aarch64__)
|
|
*regvalue = regs.elr;
|
|
#elif defined(__amd64__)
|
|
*regvalue = regs.r_rip;
|
|
#elif defined(__arm__)
|
|
*regvalue = regs.r_pc;
|
|
#elif defined(__i386__)
|
|
*regvalue = regs.r_eip;
|
|
#elif defined(__mips__)
|
|
*regvalue = regs.r_regs[PC];
|
|
#elif defined(__powerpc__)
|
|
*regvalue = regs.pc;
|
|
#elif defined(__riscv__)
|
|
*regvalue = regs.sepc;
|
|
#endif
|
|
break;
|
|
case REG_SP:
|
|
#if defined(__aarch64__)
|
|
*regvalue = regs.sp;
|
|
#elif defined(__amd64__)
|
|
*regvalue = regs.r_rsp;
|
|
#elif defined(__arm__)
|
|
*regvalue = regs.r_sp;
|
|
#elif defined(__i386__)
|
|
*regvalue = regs.r_esp;
|
|
#elif defined(__mips__)
|
|
*regvalue = regs.r_regs[SP];
|
|
#elif defined(__powerpc__)
|
|
*regvalue = regs.fixreg[1];
|
|
#elif defined(__riscv__)
|
|
*regvalue = regs.sp;
|
|
#endif
|
|
break;
|
|
default:
|
|
DPRINTFX("ERROR: no support for reg number %d", reg);
|
|
return (-1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
proc_regset(struct proc_handle *phdl, proc_reg_t reg, unsigned long regvalue)
|
|
{
|
|
struct reg regs;
|
|
|
|
if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
|
|
phdl->status == PS_IDLE) {
|
|
errno = ENOENT;
|
|
return (-1);
|
|
}
|
|
if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
|
|
return (-1);
|
|
switch (reg) {
|
|
case REG_PC:
|
|
#if defined(__aarch64__)
|
|
regs.elr = regvalue;
|
|
#elif defined(__amd64__)
|
|
regs.r_rip = regvalue;
|
|
#elif defined(__arm__)
|
|
regs.r_pc = regvalue;
|
|
#elif defined(__i386__)
|
|
regs.r_eip = regvalue;
|
|
#elif defined(__mips__)
|
|
regs.r_regs[PC] = regvalue;
|
|
#elif defined(__powerpc__)
|
|
regs.pc = regvalue;
|
|
#elif defined(__riscv__)
|
|
regs.sepc = regvalue;
|
|
#endif
|
|
break;
|
|
case REG_SP:
|
|
#if defined(__aarch64__)
|
|
regs.sp = regvalue;
|
|
#elif defined(__amd64__)
|
|
regs.r_rsp = regvalue;
|
|
#elif defined(__arm__)
|
|
regs.r_sp = regvalue;
|
|
#elif defined(__i386__)
|
|
regs.r_esp = regvalue;
|
|
#elif defined(__mips__)
|
|
regs.r_regs[PC] = regvalue;
|
|
#elif defined(__powerpc__)
|
|
regs.fixreg[1] = regvalue;
|
|
#elif defined(__riscv__)
|
|
regs.sp = regvalue;
|
|
#endif
|
|
break;
|
|
default:
|
|
DPRINTFX("ERROR: no support for reg number %d", reg);
|
|
return (-1);
|
|
}
|
|
if (ptrace(PT_SETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
|
|
return (-1);
|
|
|
|
return (0);
|
|
}
|