157 lines
6.4 KiB
C
157 lines
6.4 KiB
C
/* $NetBSD: pthread_md.h,v 1.4 2003/01/18 19:11:07 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2001 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Nathan J. Williams.
|
|
*
|
|
* 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* 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 _LIB_PTHREAD_I386_MD_H
|
|
#define _LIB_PTHREAD_I386_MD_H
|
|
|
|
#include <sys/ucontext.h>
|
|
|
|
extern int (*_md_getcontext_u)(ucontext_t *);
|
|
extern int (*_md_setcontext_u)(const ucontext_t *);
|
|
extern int (*_md_swapcontext_u)(ucontext_t *, const ucontext_t *);
|
|
|
|
#define _getcontext_u(uc) (*_md_getcontext_u)((uc))
|
|
#define _setcontext_u(uc) (*_md_setcontext_u)((uc))
|
|
#define _swapcontext_u(ouc, nuc) (*_md_swapcontext_u)((ouc), (nuc))
|
|
|
|
int _getcontext_u_s87(ucontext_t *);
|
|
int _setcontext_u_s87(const ucontext_t *);
|
|
int _swapcontext_u_s87(ucontext_t *, const ucontext_t *);
|
|
int _getcontext_u_xmm(ucontext_t *);
|
|
int _setcontext_u_xmm(const ucontext_t *);
|
|
int _swapcontext_u_xmm(ucontext_t *, const ucontext_t *);
|
|
|
|
void pthread__i386_init(void);
|
|
|
|
#define PTHREAD_MD_INIT pthread__i386_init();
|
|
|
|
static __inline long
|
|
pthread__sp(void)
|
|
{
|
|
long ret;
|
|
__asm("movl %%esp, %0" : "=g" (ret));
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_UESP])
|
|
#define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_EIP])
|
|
|
|
/*
|
|
* Set initial, sane values for registers whose values aren't just
|
|
* "don't care".
|
|
* 0x2b is GSEL(GUDATA_SEL, SEL_UPL), and
|
|
* 0x23 is GSEL(GUCODE_SEL, SEL_UPL), from arch/i386/include/segments.h.
|
|
* 0x202 is PSL_USERSET from arch/i386/include/psl.h
|
|
*/
|
|
#define _INITCONTEXT_U_MD(ucp) \
|
|
(ucp)->uc_mcontext.__gregs[_REG_GS] = 0x2b, \
|
|
(ucp)->uc_mcontext.__gregs[_REG_FS] = 0x2b, \
|
|
(ucp)->uc_mcontext.__gregs[_REG_ES] = 0x2b, \
|
|
(ucp)->uc_mcontext.__gregs[_REG_DS] = 0x2b, \
|
|
(ucp)->uc_mcontext.__gregs[_REG_CS] = 0x23, \
|
|
(ucp)->uc_mcontext.__gregs[_REG_SS] = 0x2b, \
|
|
(ucp)->uc_mcontext.__gregs[_REG_EFL] = 0x202;
|
|
|
|
/*
|
|
* Usable stack space below the ucontext_t.
|
|
* See comment in pthread_switch.S about STACK_SWITCH.
|
|
*/
|
|
#define STACKSPACE 32 /* room for 8 integer values */
|
|
|
|
/*
|
|
* Conversions between struct reg and struct mcontext. Used by
|
|
* libpthread_dbg.
|
|
*/
|
|
|
|
#define PTHREAD_UCONTEXT_TO_REG(reg, uc) do { \
|
|
(reg)->r_gs = (uc)->uc_mcontext.__gregs[_REG_GS]; \
|
|
(reg)->r_fs = (uc)->uc_mcontext.__gregs[_REG_FS]; \
|
|
(reg)->r_es = (uc)->uc_mcontext.__gregs[_REG_ES]; \
|
|
(reg)->r_ds = (uc)->uc_mcontext.__gregs[_REG_DS]; \
|
|
(reg)->r_edi = (uc)->uc_mcontext.__gregs[_REG_EDI]; \
|
|
(reg)->r_esi = (uc)->uc_mcontext.__gregs[_REG_ESI]; \
|
|
(reg)->r_ebp = (uc)->uc_mcontext.__gregs[_REG_EBP]; \
|
|
(reg)->r_ebx = (uc)->uc_mcontext.__gregs[_REG_EBX]; \
|
|
(reg)->r_edx = (uc)->uc_mcontext.__gregs[_REG_EDX]; \
|
|
(reg)->r_ecx = (uc)->uc_mcontext.__gregs[_REG_ECX]; \
|
|
(reg)->r_eax = (uc)->uc_mcontext.__gregs[_REG_EAX]; \
|
|
(reg)->r_eip = (uc)->uc_mcontext.__gregs[_REG_EIP]; \
|
|
(reg)->r_cs = (uc)->uc_mcontext.__gregs[_REG_CS]; \
|
|
(reg)->r_eflags = (uc)->uc_mcontext.__gregs[_REG_EFL]; \
|
|
(reg)->r_esp = (uc)->uc_mcontext.__gregs[_REG_UESP]; \
|
|
(reg)->r_ss = (uc)->uc_mcontext.__gregs[_REG_SS]; \
|
|
} while (/*CONSTCOND*/0)
|
|
|
|
#define PTHREAD_REG_TO_UCONTEXT(uc, reg) do { \
|
|
(uc)->uc_mcontext.__gregs[_REG_GS] = (reg)->r_gs; \
|
|
(uc)->uc_mcontext.__gregs[_REG_FS] = (reg)->r_fs; \
|
|
(uc)->uc_mcontext.__gregs[_REG_ES] = (reg)->r_es; \
|
|
(uc)->uc_mcontext.__gregs[_REG_DS] = (reg)->r_ds; \
|
|
(uc)->uc_mcontext.__gregs[_REG_EDI] = (reg)->r_edi; \
|
|
(uc)->uc_mcontext.__gregs[_REG_ESI] = (reg)->r_esi; \
|
|
(uc)->uc_mcontext.__gregs[_REG_EBP] = (reg)->r_ebp; \
|
|
(uc)->uc_mcontext.__gregs[_REG_EBX] = (reg)->r_ebx; \
|
|
(uc)->uc_mcontext.__gregs[_REG_EDX] = (reg)->r_edx; \
|
|
(uc)->uc_mcontext.__gregs[_REG_ECX] = (reg)->r_ecx; \
|
|
(uc)->uc_mcontext.__gregs[_REG_EAX] = (reg)->r_eax; \
|
|
(uc)->uc_mcontext.__gregs[_REG_EIP] = (reg)->r_eip; \
|
|
(uc)->uc_mcontext.__gregs[_REG_CS] = (reg)->r_cs; \
|
|
(uc)->uc_mcontext.__gregs[_REG_EFL] = (reg)->r_eflags; \
|
|
(uc)->uc_mcontext.__gregs[_REG_UESP]= (reg)->r_esp; \
|
|
(uc)->uc_mcontext.__gregs[_REG_SS] = (reg)->r_ss; \
|
|
/*LINTED precision loss */ \
|
|
(uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \
|
|
} while (/*CONSTCOND*/0)
|
|
|
|
|
|
#define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \
|
|
(void)memcpy((freg)->__data, \
|
|
(uc)->uc_mcontext.__fpregs.__fp_reg_set.__fpchip_state.__fp_state, \
|
|
sizeof(struct fpreg))
|
|
|
|
#define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) do { \
|
|
(void)memcpy( \
|
|
(uc)->uc_mcontext.__fpregs.__fp_reg_set.__fpchip_state.__fp_state, \
|
|
(freg)->__data, sizeof(struct fpreg)); \
|
|
/*LINTED precision loss */ \
|
|
(uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \
|
|
} while (/*CONSTCOND*/0)
|
|
|
|
#endif /* _LIB_PTHREAD_I386_MD_H */
|