2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2018 Turing Robotic Industries Inc.
5 * Copyright (c) 2000 Marcel Moolenaar
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
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/fcntl.h>
38 #include <sys/ptrace.h>
42 #include <vm/vm_param.h>
44 #include <arm64/linux/linux.h>
45 #include <arm64/linux/linux_proto.h>
46 #include <compat/linux/linux_dtrace.h>
47 #include <compat/linux/linux_fork.h>
48 #include <compat/linux/linux_misc.h>
49 #include <compat/linux/linux_mmap.h>
50 #include <compat/linux/linux_util.h>
52 #define LINUX_ARCH_AARCH64 0xc00000b7
55 LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
58 LIN_SDT_PROBE_DEFINE0(machdep, linux_mmap2, todo);
61 linux_set_upcall(struct thread *td, register_t stack)
65 td->td_frame->tf_sp = stack;
68 * The newly created Linux thread returns
69 * to the user space by the same path that a parent does.
71 td->td_frame->tf_x[0] = 0;
75 /* LINUXTODO: deduplicate arm64 linux_mmap2 */
77 linux_mmap2(struct thread *td, struct linux_mmap2_args *uap)
80 LIN_SDT_PROBE0(machdep, linux_mmap2, todo);
81 return (linux_mmap_common(td, PTROUT(uap->addr), uap->len, uap->prot,
82 uap->flags, uap->fd, uap->pgoff));
86 linux_mprotect(struct thread *td, struct linux_mprotect_args *uap)
89 return (linux_mprotect_common(td, PTROUT(uap->addr), uap->len,
94 linux_madvise(struct thread *td, struct linux_madvise_args *uap)
97 return (linux_madvise_common(td, PTROUT(uap->addr), uap->len, uap->behav));
101 linux_set_cloned_tls(struct thread *td, void *desc)
104 if ((uint64_t)desc >= VM_MAXUSER_ADDRESS)
107 return (cpu_set_user_tls(td, desc));
111 bsd_to_linux_regset(const struct reg *b_reg, struct linux_pt_regset *l_regset)
114 KASSERT(sizeof(l_regset->x) == sizeof(b_reg->x) + sizeof(l_ulong),
115 ("%s: size mismatch\n", __func__));
116 memcpy(l_regset->x, b_reg->x, sizeof(b_reg->x));
118 l_regset->x[30] = b_reg->lr;
119 l_regset->sp = b_reg->sp;
120 l_regset->pc = b_reg->elr;
121 l_regset->cpsr = b_reg->spsr;
125 linux_to_bsd_regset(struct reg *b_reg, const struct linux_pt_regset *l_regset)
128 KASSERT(sizeof(l_regset->x) == sizeof(b_reg->x) + sizeof(l_ulong),
129 ("%s: size mismatch\n", __func__));
131 memcpy(b_reg->x, l_regset->x, sizeof(b_reg->x));
132 b_reg->sp = l_regset->sp;
133 b_reg->elr = l_regset->pc;
134 b_reg->spsr = l_regset->cpsr;
138 linux_ptrace_get_syscall_info_machdep(const struct reg *reg,
139 struct syscall_info *si)
142 si->arch = LINUX_ARCH_AARCH64;
143 si->instruction_pointer = reg->lr;
144 si->stack_pointer = reg->sp;
148 linux_ptrace_getregs_machdep(struct thread *td __unused, pid_t pid __unused,
149 struct linux_pt_regset *l_regset __unused)