2 * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include "opt_compat.h"
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
37 #include <sys/ptrace.h>
38 #include <sys/sysent.h>
41 #include <machine/md_var.h>
42 #include <machine/pcb.h>
43 #include <machine/frame.h>
44 #include <machine/vmparam.h>
47 cpu_ptrace_xstate(struct thread *td, int req, void *addr, int data)
49 struct ptrace_xstate_info info;
57 case PT_GETXSTATE_OLD:
59 savefpu = (char *)(get_pcb_user_save_td(td) + 1);
60 error = copyout(savefpu, addr,
61 cpu_max_ext_state_size - sizeof(struct savefpu));
64 case PT_SETXSTATE_OLD:
65 if (data > cpu_max_ext_state_size - sizeof(struct savefpu)) {
69 savefpu = malloc(data, M_TEMP, M_WAITOK);
70 error = copyin(addr, savefpu, data);
73 error = fpusetxstate(td, savefpu, data);
75 free(savefpu, M_TEMP);
78 case PT_GETXSTATE_INFO:
79 if (data != sizeof(info)) {
83 info.xsave_len = cpu_max_ext_state_size;
84 info.xsave_mask = xsave_mask;
85 error = copyout(&info, addr, data);
90 savefpu = (char *)(get_pcb_user_save_td(td));
91 error = copyout(savefpu, addr, cpu_max_ext_state_size);
95 if (data < sizeof(struct savefpu) ||
96 data > cpu_max_ext_state_size) {
100 savefpu = malloc(data, M_TEMP, M_WAITOK);
101 error = copyin(addr, savefpu, data);
103 error = fpusetregs(td, (struct savefpu *)savefpu,
104 savefpu + sizeof(struct savefpu), data -
105 sizeof(struct savefpu));
106 free(savefpu, M_TEMP);
118 cpu_ptrace_setbase(struct thread *td, int req, register_t r)
121 if (req == PT_SETFSBASE) {
122 td->td_pcb->pcb_fsbase = r;
123 td->td_frame->tf_fs = _ufssel;
125 td->td_pcb->pcb_gsbase = r;
126 td->td_frame->tf_gs = _ugssel;
128 set_pcb_flags(td->td_pcb, PCB_FULL_IRET);
131 #ifdef COMPAT_FREEBSD32
132 #define PT_I386_GETXMMREGS (PT_FIRSTMACH + 0)
133 #define PT_I386_SETXMMREGS (PT_FIRSTMACH + 1)
136 cpu32_ptrace(struct thread *td, int req, void *addr, int data)
138 struct savefpu *fpstate;
143 case PT_I386_GETXMMREGS:
145 error = copyout(get_pcb_user_save_td(td), addr,
149 case PT_I386_SETXMMREGS:
151 fpstate = get_pcb_user_save_td(td);
152 error = copyin(addr, fpstate, sizeof(*fpstate));
153 fpstate->sv_env.en_mxcsr &= cpu_mxcsr_mask;
156 case PT_GETXSTATE_OLD:
157 case PT_SETXSTATE_OLD:
158 case PT_GETXSTATE_INFO:
161 error = cpu_ptrace_xstate(td, req, addr, data);
166 if (!SV_PROC_FLAG(td->td_proc, SV_ILP32)) {
170 r = req == PT_GETFSBASE ? td->td_pcb->pcb_fsbase :
171 td->td_pcb->pcb_gsbase;
172 error = copyout(&r, addr, sizeof(r));
177 if (!SV_PROC_FLAG(td->td_proc, SV_ILP32)) {
181 error = copyin(addr, &r, sizeof(r));
184 cpu_ptrace_setbase(td, req, r);
197 cpu_ptrace(struct thread *td, int req, void *addr, int data)
202 #ifdef COMPAT_FREEBSD32
203 if (SV_CURPROC_FLAG(SV_ILP32))
204 return (cpu32_ptrace(td, req, addr, data));
207 /* Support old values of PT_GETXSTATE_OLD and PT_SETXSTATE_OLD. */
208 if (req == PT_FIRSTMACH + 0)
209 req = PT_GETXSTATE_OLD;
210 if (req == PT_FIRSTMACH + 1)
211 req = PT_SETXSTATE_OLD;
214 case PT_GETXSTATE_OLD:
215 case PT_SETXSTATE_OLD:
216 case PT_GETXSTATE_INFO:
219 error = cpu_ptrace_xstate(td, req, addr, data);
224 r = req == PT_GETFSBASE ? &td->td_pcb->pcb_fsbase :
225 &td->td_pcb->pcb_gsbase;
226 error = copyout(r, addr, sizeof(*r));
231 error = copyin(addr, &rv, sizeof(rv));
234 if (rv >= td->td_proc->p_sysent->sv_maxuser) {
238 cpu_ptrace_setbase(td, req, rv);