blob: 14d74c67b6d906d5176c8801605e030c20138ff1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* Copyright (c) 2012, 2013 Richard Braun.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <kern/init.h>
#include <kern/macros.h>
#include <kern/param.h>
#include <machine/cpu.h>
#include <machine/strace.h>
#include <machine/tcb.h>
/*
* Low level functions.
*/
void __noreturn tcb_context_load(struct tcb *tcb);
void __noreturn tcb_start(void);
void
tcb_init(struct tcb *tcb, void *stack, void (*fn)(void))
{
void **ptr;
tcb->bp = 0;
tcb->sp = (unsigned long)stack + STACK_SIZE - sizeof(unsigned long);
tcb->ip = (unsigned long)tcb_start;
ptr = (void **)tcb->sp;
*ptr = fn;
}
void __init
tcb_load(struct tcb *tcb)
{
assert(!cpu_intr_enabled());
tcb_set_current(tcb);
tcb_context_load(tcb);
}
void
tcb_trace(const struct tcb *tcb)
{
strace_show(tcb->ip, tcb->bp);
}
void
tcb_reschedule_intr(struct trap_frame *frame)
{
(void)frame;
lapic_eoi();
/* Let the return from interrupt code handle rescheduling */
}
|
