pthread_md.h revision 1.7.8.2 1 1.7.8.2 martin /* $NetBSD: pthread_md.h,v 1.7.8.2 2008/04/28 20:23:03 martin Exp $ */
2 1.7.8.2 martin
3 1.7.8.2 martin /*-
4 1.7.8.2 martin * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 1.7.8.2 martin * All rights reserved.
6 1.7.8.2 martin *
7 1.7.8.2 martin * This code is derived from software contributed to The NetBSD Foundation
8 1.7.8.2 martin * by Nathan J. Williams.
9 1.7.8.2 martin *
10 1.7.8.2 martin * Redistribution and use in source and binary forms, with or without
11 1.7.8.2 martin * modification, are permitted provided that the following conditions
12 1.7.8.2 martin * are met:
13 1.7.8.2 martin * 1. Redistributions of source code must retain the above copyright
14 1.7.8.2 martin * notice, this list of conditions and the following disclaimer.
15 1.7.8.2 martin * 2. Redistributions in binary form must reproduce the above copyright
16 1.7.8.2 martin * notice, this list of conditions and the following disclaimer in the
17 1.7.8.2 martin * documentation and/or other materials provided with the distribution.
18 1.7.8.2 martin *
19 1.7.8.2 martin * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.7.8.2 martin * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.7.8.2 martin * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.7.8.2 martin * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.7.8.2 martin * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.7.8.2 martin * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.7.8.2 martin * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.7.8.2 martin * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.7.8.2 martin * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.7.8.2 martin * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.7.8.2 martin * POSSIBILITY OF SUCH DAMAGE.
30 1.7.8.2 martin */
31 1.7.8.2 martin
32 1.7.8.2 martin #ifndef _LIB_PTHREAD_MIPS_MD_H
33 1.7.8.2 martin #define _LIB_PTHREAD_MIPS_MD_H
34 1.7.8.2 martin
35 1.7.8.2 martin static inline long
36 1.7.8.2 martin pthread__sp(void)
37 1.7.8.2 martin {
38 1.7.8.2 martin long ret;
39 1.7.8.2 martin
40 1.7.8.2 martin __asm("move %0, $sp" : "=r" (ret));
41 1.7.8.2 martin
42 1.7.8.2 martin return ret;
43 1.7.8.2 martin }
44 1.7.8.2 martin
45 1.7.8.2 martin #define pthread__uc_sp(ucp) ((ucp)->uc_mcontext.__gregs[_REG_SP])
46 1.7.8.2 martin #define pthread__uc_pc(ucp) ((ucp)->uc_mcontext.__gregs[_REG_EPC])
47 1.7.8.2 martin
48 1.7.8.2 martin /*
49 1.7.8.2 martin * Usable stack space below the ucontext_t.
50 1.7.8.2 martin * For a good time, see comments in pthread_switch.S and
51 1.7.8.2 martin * ../i386/pthread_switch.S about STACK_SWITCH.
52 1.7.8.2 martin */
53 1.7.8.2 martin #define STACKSPACE (6*4) /* 6 integer values */
54 1.7.8.2 martin
55 1.7.8.2 martin /*
56 1.7.8.2 martin * Conversions between struct reg and struct mcontext. Used by
57 1.7.8.2 martin * libpthread_dbg. Note that in the "reg" structure, the indices
58 1.7.8.2 martin * are the same as are used in the "frame" structure in the kernel.
59 1.7.8.2 martin * These do NOT, in all cases, match the indices used in the
60 1.7.8.2 martin * "mcontext" structure.
61 1.7.8.2 martin */
62 1.7.8.2 martin #include <mips/regnum.h>
63 1.7.8.2 martin
64 1.7.8.2 martin #define PTHREAD_UCONTEXT_TO_REG(reg, uc) \
65 1.7.8.2 martin do { \
66 1.7.8.2 martin memcpy(&(reg)->r_regs[_R_AST], &(uc)->uc_mcontext.__gregs[_REG_AT],\
67 1.7.8.2 martin sizeof(__greg_t) * 31); \
68 1.7.8.2 martin (reg)->r_regs[_R_MULLO] = (uc)->uc_mcontext.__gregs[_REG_MDLO]; \
69 1.7.8.2 martin (reg)->r_regs[_R_MULHI] = (uc)->uc_mcontext.__gregs[_REG_MDHI]; \
70 1.7.8.2 martin (reg)->r_regs[_R_CAUSE] = (uc)->uc_mcontext.__gregs[_REG_CAUSE];\
71 1.7.8.2 martin (reg)->r_regs[_R_PC] = (uc)->uc_mcontext.__gregs[_REG_EPC]; \
72 1.7.8.2 martin (reg)->r_regs[_R_SR] = (uc)->uc_mcontext.__gregs[_REG_SR]; \
73 1.7.8.2 martin } while (/*CONSTCOND*/0)
74 1.7.8.2 martin
75 1.7.8.2 martin #define PTHREAD_REG_TO_UCONTEXT(uc, reg) \
76 1.7.8.2 martin do { \
77 1.7.8.2 martin memcpy(&(uc)->uc_mcontext.__gregs[_REG_AT], &(reg)->r_regs[_R_AST],\
78 1.7.8.2 martin sizeof(__greg_t) * 31); \
79 1.7.8.2 martin (uc)->uc_mcontext.__gregs[_REG_MDLO] = (reg)->r_regs[_R_MULLO]; \
80 1.7.8.2 martin (uc)->uc_mcontext.__gregs[_REG_MDHI] = (reg)->r_regs[_R_MULHI]; \
81 1.7.8.2 martin (uc)->uc_mcontext.__gregs[_REG_CAUSE] = (reg)->r_regs[_R_CAUSE];\
82 1.7.8.2 martin (uc)->uc_mcontext.__gregs[_REG_EPC] = (reg)->r_regs[_R_PC]; \
83 1.7.8.2 martin (uc)->uc_mcontext.__gregs[_REG_SR] = (reg)->r_regs[_R_SR]; \
84 1.7.8.2 martin \
85 1.7.8.2 martin (uc)->uc_flags = ((uc)->uc_flags | _UC_CPU) & ~_UC_USER; \
86 1.7.8.2 martin } while (/*CONSTCOND*/0)
87 1.7.8.2 martin
88 1.7.8.2 martin #define PTHREAD_UCONTEXT_TO_FPREG(freg, uc) \
89 1.7.8.2 martin do { \
90 1.7.8.2 martin memcpy((freg), &(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs, \
91 1.7.8.2 martin sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs)); \
92 1.7.8.2 martin (freg)->r_regs[_R_FSR - _FPBASE] = \
93 1.7.8.2 martin (uc)->uc_mcontext.__fpregs.__fp_csr; \
94 1.7.8.2 martin } while (/*CONSTCOND*/0)
95 1.7.8.2 martin
96 1.7.8.2 martin #define PTHREAD_FPREG_TO_UCONTEXT(uc, freg) \
97 1.7.8.2 martin do { \
98 1.7.8.2 martin memcpy(&(uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs, (freg), \
99 1.7.8.2 martin sizeof((uc)->uc_mcontext.__fpregs.__fp_r.__fp_regs)); \
100 1.7.8.2 martin (uc)->uc_mcontext.__fpregs.__fp_csr = \
101 1.7.8.2 martin (freg)->r_regs[_R_FSR - _FPBASE]; \
102 1.7.8.2 martin \
103 1.7.8.2 martin (uc)->uc_flags = ((uc)->uc_flags | _UC_FPU) & ~_UC_USER; \
104 1.7.8.2 martin } while (/*CONSTCOND*/0)
105 1.7.8.2 martin
106 1.7.8.2 martin #endif /* !_LIB_PTHREAD_MIPS_MD_H */
107