source: trunk/hal/x86_64/core/hal_special.c @ 168

Last change on this file since 168 was 168, checked in by max@…, 5 years ago

make the TLS initialization per-cpu

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 cpu0 __in_kdata;
35
36tls_t *curcpu()
37{
38        tls_t *cputls;
39
40        __asm volatile("movq %%gs:%1, %0" :
41            "=r" (cputls) :
42            "m"
43            (*(tls_t * const *)offsetof(tls_t, tls_self)));
44        return cputls;
45}
46
47gid_t hal_get_gid()
48{
49        return curcpu()->tls_gid;
50}
51
52cycle_t hal_time_stamp()
53{
54        return rdtsc();
55}
56
57uint64_t hal_get_cycles()
58{
59        uint64_t cycles;
60        core_t *core = CURRENT_THREAD->core;
61
62        /*
63         * Put the value of the TSC everywhere
64         */
65        cycles = rdtsc();
66        core->time_stamp = cycles;
67        core->cycles = cycles;
68
69        return cycles;
70}
71
72struct thread_s *hal_get_current_thread()
73{
74        return curcpu()->tls_thr;
75}
76
77void hal_set_current_thread( struct thread_s * thread )
78{
79        curcpu()->tls_thr = thread;
80}
81
82/* -------------------------------------------------------------------------- */
83
84void hal_fpu_enable()
85{
86        x86_panic((char *)__func__);
87}
88
89void hal_fpu_disable()
90{
91        x86_panic((char *)__func__);
92}
93
94uint32_t hal_get_stack()
95{
96        x86_panic((char *)__func__);
97        return 0;
98}
99
100uint32_t hal_set_stack( void * new_val )
101{
102        x86_panic((char *)__func__);
103        return 0;
104}
105
106uint32_t hal_get_bad_vaddr()
107{
108        x86_panic((char *)__func__);
109        return 0;
110}
111
112uint32_t hal_uncached_read( uint32_t * ptr )
113{
114        x86_panic((char *)__func__);
115        return 0;
116}
117
118void hal_invalid_dcache_line( void * ptr )
119{
120        x86_panic((char *)__func__);
121}
122
123void hal_fence()
124{
125        mfence();
126}
127
128void hal_rdbar()
129{
130        x86_panic((char *)__func__);
131}
132
133void hal_core_sleep()
134{
135        x86_panic((char *)__func__);
136}
137
138void hal_fixed_delay( uint32_t delay )
139{
140        x86_panic((char *)__func__);
141}
142
143void hal_get_mmu_excp( intptr_t * mmu_ins_excp_code,
144                       intptr_t * mmu_ins_bad_vaddr,
145                       intptr_t * mmu_dat_excp_code,
146                       intptr_t * mmu_dat_bad_vaddr )
147{
148        x86_panic((char *)__func__);
149}
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