/* $NetBSD: _context_u.S,v 1.2 2003/01/18 10:34:17 thorpej 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. */ #include #include "assym.h" /* * Only save the callee-save regs, and set a special flag in uc_flags * that says so. */ #define GETC(reg) ; \ stq s0, (UC_GREGS + _REG_S0 * 8)(reg) ; \ stq s1, (UC_GREGS + _REG_S1 * 8)(reg) ; \ stq s2, (UC_GREGS + _REG_S2 * 8)(reg) ; \ stq s3, (UC_GREGS + _REG_S3 * 8)(reg) ; \ stq s4, (UC_GREGS + _REG_S4 * 8)(reg) ; \ stq s5, (UC_GREGS + _REG_S5 * 8)(reg) ; \ stq s6, (UC_GREGS + _REG_S6 * 8)(reg) ; \ stq sp, (UC_GREGS + _REG_SP * 8)(reg) ; \ stq ra, (UC_GREGS + _REG_RA * 8)(reg) ; \ stq ra, (UC_GREGS + _REG_PC * 8)(reg) ; \ call_pal PAL_rdunique ; \ stq v0, (UC_GREGS + _REG_UNIQUE * 8)(reg) ; \ stt $f2, (UC_FPREGS + 2 * 8)(reg) ; \ stt $f3, (UC_FPREGS + 3 * 8)(reg) ; \ stt $f4, (UC_FPREGS + 4 * 8)(reg) ; \ stt $f5, (UC_FPREGS + 5 * 8)(reg) ; \ stt $f6, (UC_FPREGS + 6 * 8)(reg) ; \ stt $f7, (UC_FPREGS + 7 * 8)(reg) ; \ stt $f8, (UC_FPREGS + 8 * 8)(reg) ; \ stt $f9, (UC_FPREGS + 9 * 8)(reg) ; \ ldiq t0, 8 ; \ stq t0, (UC_GREGS + _REG_PS * 8)(reg) ; \ ldiq t0, 1 ; \ sll t0, _UC_USER_BIT, t0 ; \ bis t0, (_UC_CPU|_UC_FPU|_UC_UNIQUE), t0 ; \ stl t0, (UC_FLAGS)(reg) #define SETC(reg) ; \ ldl t0, (UC_FLAGS)(reg) ; \ ldiq t1, 1 ; \ sll t1, _UC_USER_BIT, t1 ; \ and t0, t1, t0 ; \ beq t0, 1f ; \ ; \ /* _UC_USER implies _UC_UNIQUE */ ; \ ldq a0, (UC_GREGS + _REG_UNIQUE * 8)(reg) ; \ call_pal PAL_wrunique ; \ ldq s0, (UC_GREGS + _REG_S0 * 8)(reg) ; \ ldq s1, (UC_GREGS + _REG_S1 * 8)(reg) ; \ ldq s2, (UC_GREGS + _REG_S2 * 8)(reg) ; \ ldq s3, (UC_GREGS + _REG_S3 * 8)(reg) ; \ ldq s4, (UC_GREGS + _REG_S4 * 8)(reg) ; \ ldq s5, (UC_GREGS + _REG_S5 * 8)(reg) ; \ ldq s6, (UC_GREGS + _REG_S6 * 8)(reg) ; \ ldq ra, (UC_GREGS + _REG_RA * 8)(reg) ; \ ldq t12, (UC_GREGS + _REG_PC * 8)(reg) ; \ ldt $f2, (UC_FPREGS + 2 * 8)(reg) ; \ ldt $f3, (UC_FPREGS + 3 * 8)(reg) ; \ ldt $f4, (UC_FPREGS + 4 * 8)(reg) ; \ ldt $f5, (UC_FPREGS + 5 * 8)(reg) ; \ ldt $f6, (UC_FPREGS + 6 * 8)(reg) ; \ ldt $f7, (UC_FPREGS + 7 * 8)(reg) ; \ ldt $f8, (UC_FPREGS + 8 * 8)(reg) ; \ ldt $f9, (UC_FPREGS + 9 * 8)(reg) ; \ ldq sp, (UC_GREGS + _REG_SP * 8)(reg) ; \ ; \ /* part procedure call, part RET */ ; \ jmp zero, (t12) ; \ /* NOTREACHED */ ; \ 1: mov reg, a0 ; \ CALL(setcontext) ; \ /* NOTREACHED */ LEAF(_getcontext_u,1) GETC(a0) mov zero, v0 RET END(_getcontext_u) NESTED(_setcontext_u,1,0,ra,0,0) LDGP(pv) mov a0, a1 SETC(a1) END(_setcontext_u) NESTED(_swapcontext_u,2,0,ra,0,0) LDGP(pv) GETC(a0) SETC(a1) END(_swapcontext_u)