Rev 1168 | Rev 1474 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
36 | jermar | 1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
||
3 | * All rights reserved. |
||
4 | * |
||
5 | * Redistribution and use in source and binary forms, with or without |
||
6 | * modification, are permitted provided that the following conditions |
||
7 | * are met: |
||
8 | * |
||
9 | * - Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * - Redistributions in binary form must reproduce the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer in the |
||
13 | * documentation and/or other materials provided with the distribution. |
||
14 | * - The name of the author may not be used to endorse or promote products |
||
15 | * derived from this software without specific prior written permission. |
||
16 | * |
||
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | */ |
||
28 | |||
78 | jermar | 29 | #include <arch.h> |
30 | #include <arch/ski/ski.h> |
||
435 | jermar | 31 | #include <arch/drivers/it.h> |
470 | jermar | 32 | #include <arch/interrupt.h> |
33 | #include <arch/barrier.h> |
||
919 | jermar | 34 | #include <arch/asm.h> |
35 | #include <arch/register.h> |
||
470 | jermar | 36 | #include <arch/types.h> |
919 | jermar | 37 | #include <arch/context.h> |
962 | jermar | 38 | #include <arch/stack.h> |
919 | jermar | 39 | #include <arch/mm/page.h> |
40 | #include <mm/as.h> |
||
41 | #include <config.h> |
||
42 | #include <userspace.h> |
||
519 | vana | 43 | #include <console/console.h> |
1078 | jermar | 44 | #include <proc/uarg.h> |
1121 | jermar | 45 | #include <syscall/syscall.h> |
519 | vana | 46 | |
1223 | jermar | 47 | void arch_pre_main(void) |
48 | { |
||
49 | /* Setup usermode init tasks. */ |
||
50 | init.cnt = 2; |
||
51 | init.tasks[0].addr = INIT0_ADDRESS; |
||
52 | init.tasks[0].size = INIT0_SIZE; |
||
53 | init.tasks[1].addr = INIT1_ADDRESS; |
||
54 | init.tasks[1].size = INIT1_SIZE; |
||
55 | } |
||
56 | |||
78 | jermar | 57 | void arch_pre_mm_init(void) |
58 | { |
||
470 | jermar | 59 | /* Set Interruption Vector Address (i.e. location of interruption vector table). */ |
60 | iva_write((__address) &ivt); |
||
61 | srlz_d(); |
||
62 | |||
102 | jermar | 63 | ski_init_console(); |
1223 | jermar | 64 | it_init(); |
78 | jermar | 65 | } |
66 | |||
67 | void arch_post_mm_init(void) |
||
68 | { |
||
69 | } |
||
503 | jermar | 70 | |
71 | void arch_pre_smp_init(void) |
||
72 | { |
||
73 | } |
||
74 | |||
75 | void arch_post_smp_init(void) |
||
76 | { |
||
77 | } |
||
919 | jermar | 78 | |
79 | /** Enter userspace and never return. */ |
||
1078 | jermar | 80 | void userspace(uspace_arg_t *kernel_uarg) |
919 | jermar | 81 | { |
82 | psr_t psr; |
||
83 | rsc_t rsc; |
||
84 | |||
85 | psr.value = psr_read(); |
||
86 | psr.cpl = PL_USER; |
||
87 | psr.i = true; /* start with interrupts enabled */ |
||
88 | psr.ic = true; |
||
89 | psr.ri = 0; /* start with instruction #0 */ |
||
993 | jermar | 90 | psr.bn = 1; /* start in bank 0 */ |
919 | jermar | 91 | |
92 | __asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value)); |
||
93 | rsc.loadrs = 0; |
||
94 | rsc.be = false; |
||
95 | rsc.pl = PL_USER; |
||
96 | rsc.mode = 3; /* eager mode */ |
||
97 | |||
1078 | jermar | 98 | switch_to_userspace((__address) kernel_uarg->uspace_entry, |
99 | ((__address) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT), |
||
1168 | vana | 100 | ((__address) kernel_uarg->uspace_stack)+PAGE_SIZE, |
1078 | jermar | 101 | (__address) kernel_uarg->uspace_uarg, |
102 | psr.value, rsc.value); |
||
919 | jermar | 103 | |
104 | while (1) { |
||
105 | ; |
||
106 | } |
||
107 | } |
||
1121 | jermar | 108 | |
109 | /** Set thread-local-storage pointer. |
||
110 | * |
||
111 | * We use r13 (a.k.a. tp) for this purpose. |
||
112 | */ |
||
113 | __native sys_tls_set(__native addr) |
||
114 | { |
||
115 | return 0; |
||
116 | } |