147 lines
4.3 KiB
C
147 lines
4.3 KiB
C
/* $NetBSD: mcontext.h,v 1.1 2014/08/10 05:47:38 matt Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2014 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Matt Thomas of 3am Software Foundry.
|
|
*
|
|
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
|
*/
|
|
#ifndef _AARCH64_MCONTEXT_H_
|
|
#define _AARCH64_MCONTEXT_H_
|
|
|
|
#ifdef __aarch64__
|
|
|
|
/*
|
|
* Layout of mcontext_t based on the System V Application Binary Interface,
|
|
* Edition 4.1, PowerPC Processor ABI Supplement - September 1995, and
|
|
* extended for the AltiVec Register File. Note that due to the increased
|
|
* alignment requirements of the latter, the offset of mcontext_t within
|
|
* an ucontext_t is different from System V.
|
|
*/
|
|
|
|
#define _NGREG 35 /* GR0-30, SP, PC, APSR, TPIDR */
|
|
|
|
typedef __int64_t __greg_t;
|
|
typedef __greg_t __gregset_t[_NGREG];
|
|
|
|
#define _REG_X0 0
|
|
#define _REG_X1 1
|
|
#define _REG_X2 2
|
|
#define _REG_X3 3
|
|
#define _REG_X4 4
|
|
#define _REG_X5 5
|
|
#define _REG_X6 6
|
|
#define _REG_X7 7
|
|
#define _REG_X8 8
|
|
#define _REG_X9 9
|
|
#define _REG_X10 10
|
|
#define _REG_X11 11
|
|
#define _REG_X12 12
|
|
#define _REG_X13 13
|
|
#define _REG_X14 14
|
|
#define _REG_X15 15
|
|
#define _REG_X16 16
|
|
#define _REG_X17 17
|
|
#define _REG_X18 18
|
|
#define _REG_X19 19
|
|
#define _REG_X20 20
|
|
#define _REG_X21 21
|
|
#define _REG_X22 22
|
|
#define _REG_X23 23
|
|
#define _REG_X24 24
|
|
#define _REG_X25 25
|
|
#define _REG_X26 26
|
|
#define _REG_X27 27
|
|
#define _REG_X28 28
|
|
#define _REG_X29 29
|
|
#define _REG_X30 30
|
|
#define _REG_SP 31
|
|
#define _REG_PC 32
|
|
#define _REG_SPSR 33
|
|
#define _REG_TPIDR 34
|
|
|
|
#define _NFREG 32 /* Number of SIMD registers */
|
|
|
|
typedef struct {
|
|
union __freg {
|
|
__uint8_t __b8[16];
|
|
__uint16_t __h16[8];
|
|
__uint32_t __s32[4];
|
|
__uint64_t __d64[2];
|
|
__uint128_t __q128[1];
|
|
} __qregs[_NFREG] __aligned(16);
|
|
__uint32_t __fpcr; /* FPCR */
|
|
__uint32_t __fpsr; /* FPSR */
|
|
} __fregset_t;
|
|
|
|
typedef struct {
|
|
__gregset_t __gregs; /* General Purpose Register set */
|
|
__fregset_t __fregs; /* FPU/SIMD Register File */
|
|
__greg_t __spare[8]; /* future proof */
|
|
} mcontext_t;
|
|
|
|
/* Machine-dependent uc_flags */
|
|
#define _UC_TLSBASE 0x00080000 /* see <sys/ucontext.h> */
|
|
|
|
#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
|
|
#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
|
|
#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_X0])
|
|
|
|
#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
|
|
|
|
#if defined(_RTLD_SOURCE) || defined(_LIBC_SOURCE) || defined(__LIBPTHREAD_SOURCE__)
|
|
#include <sys/tls.h>
|
|
|
|
static __inline void *
|
|
__lwp_getprivate_fast(void)
|
|
{
|
|
void *__tpidr;
|
|
__asm __volatile("mrs\t%0, tpidr_el0" : "=r"(__tpidr));
|
|
return __tpidr;
|
|
}
|
|
|
|
static __inline void *
|
|
__lwp_gettcb_fast(void)
|
|
{
|
|
void *__tpidr;
|
|
__asm __volatile("mrs\t%0, tpidr_el0" : "=r"(__tpidr));
|
|
return __tpidr;
|
|
}
|
|
|
|
static __inline void
|
|
__lwp_settcb(void *__tcb)
|
|
{
|
|
__asm __volatile("msr\ttpidr_el0, %0" :: "r"(__tcb));
|
|
}
|
|
#endif /* _RTLD_SOURCE || _LIBC_SOURCE || __LIBPTHREAD_SOURCE__ */
|
|
|
|
#elif defined(__arm__)
|
|
|
|
#include <arm/mcontext.h>
|
|
|
|
#endif /* __aarch64__/__arm__ */
|
|
|
|
#endif /* !_AARCH64_MCONTEXT_H_ */
|