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e21f96a811
machine/regnum.h ends up being included by sys/procfs.h and sys/ptrace.h via machine/reg.h. Many of the regnum definitions are too short and too generic to be exposing to any userland application including one of these two headers. Moreover, these actively cause build failures in googletest (template <typename T1 ...> expanding to template <typename 9 ...>). Hide the definitions behind _KERNEL or _WANT_MIPS_REGNUM, and patch all of the userland consumers to define as needed. Discussed with: imp, jhb Reviewed by: imp, jhb MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D21330
158 lines
4.1 KiB
C
158 lines
4.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2010 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Rui Paulo under sponsorship from the
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* FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#define _WANT_MIPS_REGNUM
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#include <sys/ptrace.h>
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#include <err.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include "_libproc.h"
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int
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proc_regget(struct proc_handle *phdl, proc_reg_t reg, unsigned long *regvalue)
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{
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struct reg regs;
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if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
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phdl->status == PS_IDLE) {
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errno = ENOENT;
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return (-1);
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}
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memset(®s, 0, sizeof(regs));
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if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
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return (-1);
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switch (reg) {
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case REG_PC:
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#if defined(__aarch64__)
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*regvalue = regs.elr;
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#elif defined(__amd64__)
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*regvalue = regs.r_rip;
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#elif defined(__arm__)
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*regvalue = regs.r_pc;
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#elif defined(__i386__)
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*regvalue = regs.r_eip;
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#elif defined(__mips__)
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*regvalue = regs.r_regs[PC];
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#elif defined(__powerpc__)
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*regvalue = regs.pc;
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#elif defined(__riscv)
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*regvalue = regs.sepc;
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#endif
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break;
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case REG_SP:
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#if defined(__aarch64__)
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*regvalue = regs.sp;
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#elif defined(__amd64__)
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*regvalue = regs.r_rsp;
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#elif defined(__arm__)
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*regvalue = regs.r_sp;
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#elif defined(__i386__)
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*regvalue = regs.r_esp;
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#elif defined(__mips__)
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*regvalue = regs.r_regs[SP];
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#elif defined(__powerpc__)
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*regvalue = regs.fixreg[1];
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#elif defined(__riscv)
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*regvalue = regs.sp;
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#endif
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break;
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default:
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DPRINTFX("ERROR: no support for reg number %d", reg);
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return (-1);
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}
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return (0);
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}
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int
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proc_regset(struct proc_handle *phdl, proc_reg_t reg, unsigned long regvalue)
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{
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struct reg regs;
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if (phdl->status == PS_DEAD || phdl->status == PS_UNDEAD ||
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phdl->status == PS_IDLE) {
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errno = ENOENT;
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return (-1);
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}
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if (ptrace(PT_GETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
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return (-1);
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switch (reg) {
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case REG_PC:
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#if defined(__aarch64__)
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regs.elr = regvalue;
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#elif defined(__amd64__)
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regs.r_rip = regvalue;
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#elif defined(__arm__)
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regs.r_pc = regvalue;
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#elif defined(__i386__)
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regs.r_eip = regvalue;
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#elif defined(__mips__)
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regs.r_regs[PC] = regvalue;
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#elif defined(__powerpc__)
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regs.pc = regvalue;
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#elif defined(__riscv)
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regs.sepc = regvalue;
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#endif
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break;
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case REG_SP:
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#if defined(__aarch64__)
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regs.sp = regvalue;
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#elif defined(__amd64__)
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regs.r_rsp = regvalue;
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#elif defined(__arm__)
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regs.r_sp = regvalue;
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#elif defined(__i386__)
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regs.r_esp = regvalue;
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#elif defined(__mips__)
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regs.r_regs[SP] = regvalue;
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#elif defined(__powerpc__)
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regs.fixreg[1] = regvalue;
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#elif defined(__riscv)
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regs.sp = regvalue;
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#endif
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break;
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default:
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DPRINTFX("ERROR: no support for reg number %d", reg);
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return (-1);
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}
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if (ptrace(PT_SETREGS, proc_getpid(phdl), (caddr_t)®s, 0) < 0)
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return (-1);
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return (0);
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}
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