mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-21 18:27:22 +00:00
7e6437c084
To support recent extensions to the Arm architecture we may need to store more or larger registers when sending a signal. To support this create a list of these extra registers. Userspace that needs to access a register in the signal handler can then walk the list to find the correct register struct and read/write its contents. Reviewed by: kib, markj (earlier version) Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D43302
107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
/*-
|
|
* Copyright (c) 2014 Andrew Turner
|
|
* Copyright (c) 2014-2015 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Andrew Turner under
|
|
* sponsorship from the FreeBSD Foundation.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifdef __arm__
|
|
#include <arm/ucontext.h>
|
|
#else /* !__arm__ */
|
|
|
|
#ifndef _MACHINE_UCONTEXT_H_
|
|
#define _MACHINE_UCONTEXT_H_
|
|
|
|
struct gpregs {
|
|
__register_t gp_x[30];
|
|
__register_t gp_lr;
|
|
__register_t gp_sp;
|
|
__register_t gp_elr;
|
|
__uint64_t gp_spsr;
|
|
};
|
|
|
|
struct fpregs {
|
|
__uint128_t fp_q[32];
|
|
__uint32_t fp_sr;
|
|
__uint32_t fp_cr;
|
|
int fp_flags;
|
|
int fp_pad;
|
|
};
|
|
|
|
/*
|
|
* Support for registers that don't fit into gpregs or fpregs, e.g. SVE.
|
|
* There are some registers that have been added so are optional. To support
|
|
* these create an array of headers that point at the register data.
|
|
*/
|
|
struct arm64_reg_context {
|
|
__uint32_t ctx_id;
|
|
__uint32_t ctx_size;
|
|
};
|
|
|
|
#define ARM64_CTX_END 0xa5a5a5a5
|
|
|
|
struct __mcontext {
|
|
struct gpregs mc_gpregs;
|
|
struct fpregs mc_fpregs;
|
|
int mc_flags;
|
|
#define _MC_FP_VALID 0x1 /* Set when mc_fpregs has valid data */
|
|
int mc_pad; /* Padding */
|
|
__uint64_t mc_ptr; /* Address of extra_regs struct */
|
|
__uint64_t mc_spare[7]; /* Space for expansion, set to zero */
|
|
};
|
|
|
|
|
|
typedef struct __mcontext mcontext_t;
|
|
|
|
#ifdef COMPAT_FREEBSD32
|
|
#include <compat/freebsd32/freebsd32_signal.h>
|
|
typedef struct __mcontext32 {
|
|
uint32_t mc_gregset[17];
|
|
uint32_t mc_vfp_size;
|
|
uint32_t mc_vfp_ptr;
|
|
uint32_t mc_spare[33];
|
|
} mcontext32_t;
|
|
|
|
typedef struct __ucontext32 {
|
|
sigset_t uc_sigmask;
|
|
mcontext32_t uc_mcontext;
|
|
u_int32_t uc_link;
|
|
struct sigaltstack32 uc_stack;
|
|
u_int32_t uc_flags;
|
|
u_int32_t __spare__[4];
|
|
} ucontext32_t;
|
|
|
|
typedef struct __mcontext32_vfp {
|
|
__uint64_t mcv_reg[32];
|
|
__uint32_t mcv_fpscr;
|
|
} mcontext32_vfp_t;
|
|
|
|
#endif /* COMPAT_FREEBSD32 */
|
|
|
|
#endif /* !_MACHINE_UCONTEXT_H_ */
|
|
|
|
#endif /* !__arm__ */
|