2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include "opt_compat.h"
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/malloc.h>
39 #include <sys/ptrace.h>
40 #include <sys/sysent.h>
43 #include <machine/md_var.h>
44 #include <machine/pcb.h>
45 #include <machine/frame.h>
46 #include <machine/vmparam.h>
49 cpu_ptrace_xstate(struct thread *td, int req, void *addr, int data)
51 struct ptrace_xstate_info info;
59 case PT_GETXSTATE_OLD:
61 savefpu = (char *)(get_pcb_user_save_td(td) + 1);
62 error = copyout(savefpu, addr,
63 cpu_max_ext_state_size - sizeof(struct savefpu));
66 case PT_SETXSTATE_OLD:
67 if (data > cpu_max_ext_state_size - sizeof(struct savefpu)) {
71 savefpu = malloc(data, M_TEMP, M_WAITOK);
72 error = copyin(addr, savefpu, data);
75 error = fpusetxstate(td, savefpu, data);
77 free(savefpu, M_TEMP);
80 case PT_GETXSTATE_INFO:
81 if (data != sizeof(info)) {
85 info.xsave_len = cpu_max_ext_state_size;
86 info.xsave_mask = xsave_mask;
87 error = copyout(&info, addr, data);
92 savefpu = (char *)(get_pcb_user_save_td(td));
93 error = copyout(savefpu, addr, cpu_max_ext_state_size);
97 if (data < sizeof(struct savefpu) ||
98 data > cpu_max_ext_state_size) {
102 savefpu = malloc(data, M_TEMP, M_WAITOK);
103 error = copyin(addr, savefpu, data);
105 error = fpusetregs(td, (struct savefpu *)savefpu,
106 savefpu + sizeof(struct savefpu), data -
107 sizeof(struct savefpu));
108 free(savefpu, M_TEMP);
120 cpu_ptrace_setbase(struct thread *td, int req, register_t r)
125 set_pcb_flags(pcb, PCB_FULL_IRET);
126 if (req == PT_SETFSBASE) {
128 td->td_frame->tf_fs = _ufssel;
131 td->td_frame->tf_gs = _ugssel;
135 #ifdef COMPAT_FREEBSD32
136 #define PT_I386_GETXMMREGS (PT_FIRSTMACH + 0)
137 #define PT_I386_SETXMMREGS (PT_FIRSTMACH + 1)
140 cpu32_ptrace(struct thread *td, int req, void *addr, int data)
142 struct savefpu *fpstate;
148 case PT_I386_GETXMMREGS:
150 error = copyout(get_pcb_user_save_td(td), addr,
154 case PT_I386_SETXMMREGS:
156 fpstate = get_pcb_user_save_td(td);
157 error = copyin(addr, fpstate, sizeof(*fpstate));
158 fpstate->sv_env.en_mxcsr &= cpu_mxcsr_mask;
161 case PT_GETXSTATE_OLD:
162 case PT_SETXSTATE_OLD:
163 case PT_GETXSTATE_INFO:
166 error = cpu_ptrace_xstate(td, req, addr, data);
171 if (!SV_PROC_FLAG(td->td_proc, SV_ILP32)) {
177 update_pcb_bases(pcb);
178 r = req == PT_GETFSBASE ? pcb->pcb_fsbase : pcb->pcb_gsbase;
179 error = copyout(&r, addr, sizeof(r));
184 if (!SV_PROC_FLAG(td->td_proc, SV_ILP32)) {
188 error = copyin(addr, &r, sizeof(r));
191 cpu_ptrace_setbase(td, req, r);
204 cpu_ptrace(struct thread *td, int req, void *addr, int data)
210 #ifdef COMPAT_FREEBSD32
211 if (SV_CURPROC_FLAG(SV_ILP32))
212 return (cpu32_ptrace(td, req, addr, data));
215 /* Support old values of PT_GETXSTATE_OLD and PT_SETXSTATE_OLD. */
216 if (req == PT_FIRSTMACH + 0)
217 req = PT_GETXSTATE_OLD;
218 if (req == PT_FIRSTMACH + 1)
219 req = PT_SETXSTATE_OLD;
222 case PT_GETXSTATE_OLD:
223 case PT_SETXSTATE_OLD:
224 case PT_GETXSTATE_INFO:
227 error = cpu_ptrace_xstate(td, req, addr, data);
234 update_pcb_bases(pcb);
235 r = req == PT_GETFSBASE ? &pcb->pcb_fsbase : &pcb->pcb_gsbase;
236 error = copyout(r, addr, sizeof(*r));
241 error = copyin(addr, &rv, sizeof(rv));
244 if (rv >= td->td_proc->p_sysent->sv_maxuser) {
248 cpu_ptrace_setbase(td, req, rv);