pthread_md.h revision 1.6.22.1 1 1.6.22.1 yamt /* $NetBSD: pthread_md.h,v 1.6.22.1 2008/05/18 12:30:42 yamt Exp $ */
2 1.2 thorpej
3 1.2 thorpej /*-
4 1.2 thorpej * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 1.2 thorpej * All rights reserved.
6 1.2 thorpej *
7 1.2 thorpej * This code is derived from software contributed to The NetBSD Foundation
8 1.2 thorpej * by Nathan J. Williams.
9 1.2 thorpej *
10 1.2 thorpej * Redistribution and use in source and binary forms, with or without
11 1.2 thorpej * modification, are permitted provided that the following conditions
12 1.2 thorpej * are met:
13 1.2 thorpej * 1. Redistributions of source code must retain the above copyright
14 1.2 thorpej * notice, this list of conditions and the following disclaimer.
15 1.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright
16 1.2 thorpej * notice, this list of conditions and the following disclaimer in the
17 1.2 thorpej * documentation and/or other materials provided with the distribution.
18 1.2 thorpej *
19 1.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.2 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.2 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.2 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.2 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.2 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.2 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.2 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.2 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.2 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.2 thorpej * POSSIBILITY OF SUCH DAMAGE.
30 1.2 thorpej */
31 1.2 thorpej
32 1.2 thorpej #ifndef _LIB_PTHREAD_MIPS_MD_H
33 1.2 thorpej #define _LIB_PTHREAD_MIPS_MD_H
34 1.2 thorpej
35 1.6 perry static inline long
36 1.2 thorpej pthread__sp(void)
37 1.2 thorpej {
38 1.2 thorpej long ret;
39 1.2 thorpej
40 1.2 thorpej __asm("move %0, $sp" : "=r" (ret));
41 1.2 thorpej
42 1.2 thorpej return ret;
43 1.2 thorpej }
44 1.2 thorpej
45 1.2 thorpej #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
46 1.2 thorpej #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_EPC])
47 1.2 thorpej
48 1.2 thorpej /*
49 1.2 thorpej * Usable stack space below the ucontext_t.
50 1.2 thorpej * For a good time, see comments in pthread_switch.S and
51 1.2 thorpej * ../i386/pthread_switch.S about STACK_SWITCH.
52 1.2 thorpej */
53 1.3 nathanw #define STACKSPACE (6*4) /* 6 integer values */
54 1.2 thorpej
55 1.2 thorpej /*
56 1.2 thorpej * Conversions between struct reg and struct mcontext. Used by
57 1.2 thorpej * libpthread_dbg. Note that in the "reg" structure, the indices
58 1.2 thorpej * are the same as are used in the "frame" structure in the kernel.
59 1.2 thorpej * These do NOT, in all cases, match the indices used in the
60 1.2 thorpej * "mcontext" structure.
61 1.2 thorpej */
62 1.2 thorpej #include <mips/regnum.h>
63 1.2 thorpej
64 1.2 thorpej #define PTHREAD_UCONTEXT_TO_REG(reg, uc) \
65 1.2 thorpej do { \
66 1.4 he memcpy(&(reg)->r_regs[_R_AST], &(uc)->uc_mcontext.__gregs[_REG_AT],\
67 1.2 thorpej sizeof(__greg_t) * 31); \
68 1.4 he (reg)->r_regs[_R_MULLO] = (uc)->uc_mcontext.__gregs[_REG_MDLO]; \
69 1.4 he (reg)->r_regs[_R_MULHI] = (uc)->uc_mcontext.__gregs[_REG_MDHI]; \
70 1.4 he (reg)->r_regs[_R_CAUSE] = (uc)->uc_mcontext.__gregs[_REG_CAUSE];\
71 1.4 he (reg)->r_regs[_R_PC] = (uc)->uc_mcontext.__gregs[_REG_EPC]; \
72 1.4 he (reg)->r_regs[_R_SR] = (uc)->uc_mcontext.__gregs[_REG_SR]; \
73 1.2 thorpej } while (/*CONSTCOND*/0)
74 1.2 thorpej
75 1.2 thorpej #define PTHREAD_REG_TO_UCONTEXT(uc, reg) \
76 1.2 thorpej do { \
77 1.4 he memcpy(&(uc)->uc_mcontext.__gregs[_REG_AT], &(reg)->r_regs[_R_AST],\
78 1.2 thorpej sizeof(__greg_t) * 31); \
79 1.4 he (uc)->uc_mcontext.__gregs[_REG_MDLO] = (reg)->r_regs[_R_MULLO]; \
80 1.4 he (uc)->uc_mcontext.__gregs[_REG_MDHI] = (reg)->r_regs[_R_MULHI]; \
81 1.4 he (uc)->uc_mcontext.__gregs[_REG_CAUSE] = (reg)->r_regs[_R_CAUSE];\
82 1.4 he (uc)->uc_mcontext.__gregs[_REG_EPC] = (reg)->r_regs[_R_PC]; \
83 1.4 he (uc)->uc_mcontext.__gregs[_REG_SR] = (reg)->r_regs[_R_SR]; \
84 1.2 thorpej \
85 1.2 thorpej (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \
86 1.2 thorpej } while (/*CONSTCOND*/0)
87 1.2 thorpej
88 1.2 thorpej #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \
89 1.2 thorpej do { \
90 1.5 simonb memcpy((freg), &(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs, \
91 1.5 simonb sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs)); \
92 1.4 he (freg)->r_regs[_R_FSR - _FPBASE] = \
93 1.2 thorpej (uc)->uc_mcontext.__fpregs.__fp_csr; \
94 1.2 thorpej } while (/*CONSTCOND*/0)
95 1.2 thorpej
96 1.2 thorpej #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) \
97 1.2 thorpej do { \
98 1.5 simonb memcpy(&(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs, (freg), \
99 1.5 simonb sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs)); \
100 1.2 thorpej (uc)->uc_mcontext.__fpregs.__fp_csr = \
101 1.4 he (freg)->r_regs[_R_FSR - _FPBASE]; \
102 1.2 thorpej \
103 1.2 thorpej (uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \
104 1.2 thorpej } while (/*CONSTCOND*/0)
105 1.2 thorpej
106 1.2 thorpej #endif /* !_LIB_PTHREAD_MIPS_MD_H */
107