source: trunk/hal/x86_64/core/hal_context.c @ 193

Last change on this file since 193 was 193, checked in by max@…, 5 years ago

build the context

File size: 3.2 KB
Line 
1/*
2 * hal_context.c - implementation of Thread Context API for TSAR-MIPS32
3 *
4 * Author  Alain Greiner    (2016)
5 *
6 * Copyright (c)  UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH.
9 *
10 * ALMOS-MKH.is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH.is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH.; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include <hal_types.h>
25#include <memcpy.h>
26#include <thread.h>
27#include <string.h>
28#include <process.h>
29#include <printk.h>
30#include <vmm.h>
31#include <core.h>
32#include <cluster.h>
33
34#include <hal_context.h>
35#include <hal_kentry.h>
36#include <hal_internal.h>
37#include <hal_segmentation.h>
38
39error_t hal_cpu_context_create(struct thread_s *thread)
40{
41        hal_cpu_context_t *context;
42        kmem_req_t req;
43
44        /* allocate memory for cpu_context */
45        req.type  = KMEM_CPU_CTX;
46        req.size  = sizeof(hal_cpu_context_t);
47        req.flags = AF_KERNEL | AF_ZERO;
48
49        context = (hal_cpu_context_t *)kmem_alloc(&req);
50        if (context == NULL)
51                return ENOMEM;
52
53        /* set cpu context pointer in thread */
54        thread->cpu_context = (void*)context;
55
56        /* build the context */
57        /* tf_gs */
58        /* tf_fs */
59        context->tf_es = GDT_FIXED_SEL(GDT_UDATA_SEL, SEL_UPL);
60        context->tf_ds = GDT_FIXED_SEL(GDT_UDATA_SEL, SEL_UPL);
61        context->tf_rip = (uint64_t)thread->entry_func;
62        context->tf_rflags = PSL_USERSET;
63
64        if (thread->type == THREAD_USER) {
65                context->tf_cs = GDT_FIXED_SEL(GDT_UCODE_SEL, SEL_UPL);
66                context->tf_rsp = ((uint64_t)thread->u_stack_base) +
67                    thread->u_stack_size;
68        } else {
69                context->tf_cs = GDT_FIXED_SEL(GDT_KCODE_SEL, SEL_KPL);
70                context->tf_rsp = ((uint64_t)thread->k_stack_base) +
71                    thread->k_stack_size;
72        }
73
74        return 0;
75}
76
77error_t hal_cpu_context_copy( thread_t * dst,
78                              thread_t * src )
79{
80        x86_panic((char *)__func__);
81        return 0;
82}
83
84void hal_cpu_context_destroy( thread_t * thread )
85{
86        x86_panic((char *)__func__);
87}
88
89error_t hal_fpu_context_create( thread_t * thread )
90{
91        x86_panic((char *)__func__);
92        return 0;
93}
94
95error_t hal_fpu_context_copy( thread_t * dst,
96                              thread_t * src )
97{
98        x86_panic((char *)__func__);
99        return 0;
100}
101
102void hal_fpu_context_destroy( thread_t * thread )
103{
104        x86_panic((char *)__func__);
105}
106
107void hal_cpu_context_save( thread_t * thread )
108{
109        x86_panic((char *)__func__);
110}
111
112void hal_cpu_context_restore( thread_t * thread )
113{
114        x86_panic((char *)__func__);
115}
116
117void hal_cpu_context_load( thread_t * thread )
118{
119        x86_panic((char *)__func__);
120}
121
122void hal_fpu_context_save( thread_t * thread )
123{
124        x86_panic((char *)__func__);
125}
126
127void hal_fpu_context_restore( thread_t * thread )
128{
129        x86_panic((char *)__func__);
130}
131
132void hal_fpu_context_dup( xptr_t dst,
133                          xptr_t src )
134{
135        x86_panic((char *)__func__);
136}
137
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