2 * Copyright (c) 2005 Doug Rabson
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("$FreeBSD$");
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/malloc.h>
37 #include <sys/ptrace.h>
38 #include <machine/md_var.h>
39 #include <machine/pcb.h>
41 #if !defined(CPU_DISABLE_SSE) && defined(I686_CPU)
42 #define CPU_ENABLE_SSE
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(union savefpu));
64 case PT_SETXSTATE_OLD:
65 if (data > cpu_max_ext_state_size - sizeof(union savefpu)) {
69 savefpu = malloc(data, M_TEMP, M_WAITOK);
70 error = copyin(addr, savefpu, data);
73 error = npxsetxstate(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(union savefpu) ||
96 data > cpu_max_ext_state_size) {
100 savefpu = malloc(data, M_TEMP, M_WAITOK);
101 error = copyin(addr, savefpu, data);
103 error = npxsetregs(td, (union savefpu *)savefpu,
104 savefpu + sizeof(union savefpu), data -
105 sizeof(union savefpu));
106 free(savefpu, M_TEMP);
119 cpu_ptrace(struct thread *td, int req, void *addr, int data)
121 #ifdef CPU_ENABLE_SSE
122 struct savexmm *fpstate;
128 fpstate = &get_pcb_user_save_td(td)->sv_xmm;
132 error = copyout(fpstate, addr, sizeof(*fpstate));
137 error = copyin(addr, fpstate, sizeof(*fpstate));
138 fpstate->sv_env.en_mxcsr &= cpu_mxcsr_mask;
141 case PT_GETXSTATE_OLD:
142 case PT_SETXSTATE_OLD:
143 case PT_GETXSTATE_INFO:
146 error = cpu_ptrace_xstate(td, req, addr, data);