/* $NetBSD: pthread_md.h,v 1.6 2005/12/24 21:11:16 perry 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 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) #define PTHREAD_UCONTEXT_XREG_FLAG _UC_FXSAVE #define PTHREAD_UCONTEXT_TO_XREG(xreg, uc) \ (void)memcpy((xreg), \ (uc)->uc_mcontext.__fpregs.__fp_reg_set.__fp_xmm_state.__fp_xmm, \ sizeof(struct xmmregs)) #define PTHREAD_XREG_TO_UCONTEXT(uc, xreg) do { \ (void)memcpy( \ (uc)->uc_mcontext.__fpregs.__fp_reg_set.__fp_xmm_state.__fp_xmm, \ (xreg), \ sizeof(struct xmmregs)); \ (uc)->uc_flags = ((uc)->uc_flags | _UC_FXSAVE) & ~_UC_USER; \ } while (/*CONSTCOND*/0) #endif /* _LIB_PTHREAD_I386_MD_H */