source: trunk/hal/x86_64/core/hal_special.c @ 280

Last change on this file since 280 was 280, checked in by max@…, 5 years ago

sync

File size: 2.7 KB
Line 
1/*
2 * hal_special.c - implementation of TLS API for x86_64
3 *
4 * Copyright (c) 2017 Maxime Villard
5 *
6 * This file is part of ALMOS-MKH.
7 *
8 * ALMOS-MKH is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2.0 of the License.
11 *
12 * ALMOS-MKH is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include <hal_types.h>
23#include <hal_apic.h>
24#include <hal_special.h>
25#include <hal_register.h>
26#include <hal_internal.h>
27#include <hal_segmentation.h>
28
29#include <core.h>
30#include <thread.h>
31
32struct thread_s;
33
34tls_t *curcpu()
35{
36        tls_t *cputls;
37
38        __asm volatile("movq %%gs:%1, %0" :
39            "=r" (cputls) :
40            "m"
41            (*(tls_t * const *)offsetof(tls_t, tls_self)));
42        return cputls;
43}
44
45gid_t hal_get_gid()
46{
47        return curcpu()->tls_gid;
48}
49
50cycle_t hal_time_stamp()
51{
52        return rdtsc();
53}
54
55inline reg_t hal_get_sr()
56{
57        return 0;
58}
59
60uint64_t hal_get_cycles()
61{
62        uint64_t cycles;
63        core_t *core = CURRENT_THREAD->core;
64
65        /*
66         * Put the value of the TSC everywhere
67         */
68        cycles = rdtsc();
69        core->time_stamp = cycles;
70        core->cycles = cycles;
71
72        return cycles;
73}
74
75struct thread_s *hal_get_current_thread()
76{
77        return curcpu()->tls_thr;
78}
79
80void hal_set_current_thread( struct thread_s * thread )
81{
82        curcpu()->tls_thr = thread;
83}
84
85/* -------------------------------------------------------------------------- */
86
87void hal_fpu_enable()
88{
89        x86_panic((char *)__func__);
90}
91
92void hal_fpu_disable()
93{
94        x86_panic((char *)__func__);
95}
96
97uint32_t hal_get_stack()
98{
99        x86_panic((char *)__func__);
100        return 0;
101}
102
103uint32_t hal_set_stack( void * new_val )
104{
105        x86_panic((char *)__func__);
106        return 0;
107}
108
109uint32_t hal_get_bad_vaddr()
110{
111        x86_panic((char *)__func__);
112        return 0;
113}
114
115uint32_t hal_uncached_read( uint32_t * ptr )
116{
117        x86_panic((char *)__func__);
118        return 0;
119}
120
121void hal_invalid_dcache_line( void * ptr )
122{
123        x86_panic((char *)__func__);
124}
125
126void hal_fence()
127{
128        mfence();
129}
130
131void hal_rdbar()
132{
133        x86_panic((char *)__func__);
134}
135
136void hal_core_sleep()
137{
138        x86_panic((char *)__func__);
139}
140
141void hal_fixed_delay( uint32_t delay )
142{
143        x86_panic((char *)__func__);
144}
145
146void hal_get_mmu_excp( intptr_t * mmu_ins_excp_code,
147                       intptr_t * mmu_ins_bad_vaddr,
148                       intptr_t * mmu_dat_excp_code,
149                       intptr_t * mmu_dat_bad_vaddr )
150{
151        x86_panic((char *)__func__);
152}
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