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553cb3ed46
sys/param.h was manually adjusted to not define __NetBSD_Version__ since it will be defined by the compiler.
170 lines
4.8 KiB
C
Vendored
170 lines
4.8 KiB
C
Vendored
/* $NetBSD: mcontext.h,v 1.6 2020/03/14 16:12:16 skrll Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas of 3am Software Foundry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _RISCV_MCONTEXT_H_
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#define _RISCV_MCONTEXT_H_
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/*
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*/
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#define _NGREG 32 /* GR1-31 */
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#define _NFREG 33 /* F0-31, FCSR */
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/*
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* This fragment is common to <riscv/mcontext.h> and <riscv/reg.h>
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*/
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#ifndef _BSD_FPREG_T_
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union __fpreg {
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__uint64_t u_u64;
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double u_d;
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};
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#define _BSD_FPREG_T_ union __fpreg
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#endif
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typedef __uint64_t __greg_t;
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typedef __greg_t __gregset_t[_NGREG];
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typedef __uint32_t __greg32_t;
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typedef __greg32_t __gregset32_t[_NGREG];
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typedef _BSD_FPREG_T_ __fregset_t[_NFREG];
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#define _REG_X1 0
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#define _REG_X2 1
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#define _REG_X3 2
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#define _REG_X4 3
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#define _REG_X5 4
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#define _REG_X6 5
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#define _REG_X7 6
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#define _REG_X8 7
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#define _REG_X9 8
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#define _REG_X10 9
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#define _REG_X11 10
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#define _REG_X12 11
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#define _REG_X13 12
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#define _REG_X14 13
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#define _REG_X15 14
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#define _REG_X16 15
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#define _REG_X17 16
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#define _REG_X18 17
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#define _REG_X19 18
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#define _REG_X20 19
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#define _REG_X21 20
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#define _REG_X22 21
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#define _REG_X23 22
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#define _REG_X24 23
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#define _REG_X25 24
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#define _REG_X26 25
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#define _REG_X27 26
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#define _REG_X28 27
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#define _REG_X29 28
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#define _REG_X30 29
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#define _REG_X31 30
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#define _REG_PC 31
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#define _REG_RA _REG_X1
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#define _REG_SP _REG_X2
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#define _REG_GP _REG_X3
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#define _REG_TP _REG_X4
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#define _REG_S0 _REG_X8
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#define _REG_RV _REG_X10
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#define _REG_A0 _REG_X10
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#define _REG_F0 0
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#define _REG_FPCSR 32
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typedef struct {
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__gregset_t __gregs; /* General Purpose Register set */
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__fregset_t __fregs; /* Floating Point Register set */
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__greg_t __private; /* copy of l_private */
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__greg_t __spare[8]; /* future proof */
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} mcontext_t;
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typedef struct {
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__gregset32_t __gregs; /* General Purpose Register set */
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__fregset_t __fregs; /* Floating Point Register set */
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__greg32_t __private; /* copy of l_private */
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__greg32_t __spare[8]; /* future proof */
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} mcontext32_t;
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/* Machine-dependent uc_flags */
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#define _UC_SETSTACK 0x00010000 /* see <sys/ucontext.h> */
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#define _UC_CLRSTACK 0x00020000 /* see <sys/ucontext.h> */
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#define _UC_TLSBASE 0x00080000 /* see <sys/ucontext.h> */
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#define _UC_MACHINE_SP(uc) ((uc)->uc_mcontext.__gregs[_REG_SP])
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#define _UC_MACHINE_FP(uc) ((uc)->uc_mcontext.__gregs[_REG_S0])
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#define _UC_MACHINE_PC(uc) ((uc)->uc_mcontext.__gregs[_REG_PC])
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#define _UC_MACHINE_INTRV(uc) ((uc)->uc_mcontext.__gregs[_REG_RV])
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#define _UC_MACHINE_SET_PC(uc, pc) _UC_MACHINE_PC(uc) = (pc)
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#if defined(_RTLD_SOURCE) || defined(_LIBC_SOURCE) || defined(__LIBPTHREAD_SOURCE__)
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#include <sys/tls.h>
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/*
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* On RISCV, since displacements are signed 12-bit values, the TCB pointer is
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* not and points to the first static entry.
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*/
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#define TLS_TP_OFFSET 0x0
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#define TLS_DTV_OFFSET 0x800
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__CTASSERT(TLS_TP_OFFSET + sizeof(struct tls_tcb) < 0x800);
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static __inline void *
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__lwp_getprivate_fast(void)
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{
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void *__tp;
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__asm("move %0,tp" : "=r"(__tp));
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return __tp;
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}
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static __inline void *
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__lwp_gettcb_fast(void)
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{
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void *__tcb;
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__asm __volatile(
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"addi %[__tcb],tp,%[__offset]"
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: [__tcb] "=r" (__tcb)
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: [__offset] "n" (-(TLS_TP_OFFSET + sizeof(struct tls_tcb))));
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return __tcb;
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}
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static __inline void
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__lwp_settcb(void *__tcb)
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{
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__asm __volatile(
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"addi tp,%[__tcb],%[__offset]"
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:
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: [__tcb] "r" (__tcb),
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[__offset] "n" (TLS_TP_OFFSET + sizeof(struct tls_tcb)));
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}
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#endif /* _RTLD_SOURCE || _LIBC_SOURCE || __LIBPTHREAD_SOURCE__ */
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#endif /* !_RISCV_MCONTEXT_H_ */ |