source: trunk/hal/x86_64/hal_kentry.S @ 29

Last change on this file since 29 was 29, checked in by max@…, 5 years ago

Update. The kernel now enables the GDT/IDT, and has trap entries. A
x86_printf function is added for debugging purposes only. The new Makefile
will come in another commit.

File size: 3.0 KB
Line 
1/*
2 * hal_kentry.S - Entry points into the kernel (traps, interrupts, syscalls)
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#define x86_ASM
23#include <hal_boot.h>
24#include <hal_kentry.h>
25
26#define TRAPENTRY(a)    \
27        pushq $(a);     \
28        jmp alltraps;
29
30#define ZTRAPENTRY(a) \
31        pushq $0; \
32        TRAPENTRY(a)
33
34        .text
35        .globl  hal_trap_entry
36        .type   hal_trap_entry, @function
37
38ASM_ENTRY(x86_trap00)
39        ZTRAPENTRY(T_DIVIDE)
40
41ASM_ENTRY(x86_trap01)
42        ZTRAPENTRY(T_TRCTRAP)
43
44ASM_ENTRY(x86_trap02)
45        ZTRAPENTRY(T_NMI)
46
47ASM_ENTRY(x86_trap03)
48        ZTRAPENTRY(T_BPTFLT)
49
50ASM_ENTRY(x86_trap04)
51        ZTRAPENTRY(T_OFLOW)
52
53ASM_ENTRY(x86_trap05)
54        ZTRAPENTRY(T_BOUND)
55
56ASM_ENTRY(x86_trap06)
57        ZTRAPENTRY(T_PRIVINFLT)
58
59ASM_ENTRY(x86_trap07)
60        ZTRAPENTRY(T_DNA)
61
62ASM_ENTRY(x86_trap08)
63        TRAPENTRY(T_DOUBLEFLT)
64
65ASM_ENTRY(x86_trap09)
66        ZTRAPENTRY(T_FPOPFLT)
67
68ASM_ENTRY(x86_trap0a)
69        TRAPENTRY(T_TSSFLT)
70
71ASM_ENTRY(x86_trap0b)
72        ZTRAPENTRY(T_SEGNPFLT)
73
74ASM_ENTRY(x86_trap0c)
75        ZTRAPENTRY(T_STKFLT)
76
77ASM_ENTRY(x86_trap0d)
78        ZTRAPENTRY(T_PROTFLT)
79
80ASM_ENTRY(x86_trap0e)
81        TRAPENTRY(T_PAGEFLT)
82
83ASM_ENTRY(x86_trap0f)
84        ZTRAPENTRY(T_ASTFLT)
85
86ASM_ENTRY(x86_trap10)
87        ZTRAPENTRY(T_ARITHTRAP)
88
89ASM_ENTRY(x86_trap11)
90        TRAPENTRY(T_ALIGNFLT)
91
92ASM_ENTRY(x86_trap12)
93        ZTRAPENTRY(T_MCA)
94
95ASM_ENTRY(x86_trap13)
96        ZTRAPENTRY(T_XMM)
97
98ASM_ENTRY(x86_trap14)
99ASM_ENTRY(x86_trap15)
100ASM_ENTRY(x86_trap16)
101ASM_ENTRY(x86_trap17)
102ASM_ENTRY(x86_trap18)
103ASM_ENTRY(x86_trap19)
104ASM_ENTRY(x86_trap1a)
105ASM_ENTRY(x86_trap1b)
106ASM_ENTRY(x86_trap1c)
107ASM_ENTRY(x86_trap1d)
108ASM_ENTRY(x86_trap1e)
109ASM_ENTRY(x86_trap1f)
110        /* 20 - 31 reserved for future exp */
111        ZTRAPENTRY(T_RESERVED)
112
113/*
114 * Arguments pushed on the stack:
115 *  tf_trapno
116 *  tf_err: Dummy inserted if not defined
117 *  tf_rip
118 *  tf_cs
119 *  tf_rflags
120 *  tf_rsp
121 *  tf_ss
122 */
123alltraps:
124        movq    %rsp,%rdi
125        call    hal_trap_entry
126        /* NOTREACHED */
127
128        .data
129        .globl  x86_traps
130        .type   x86_traps, @object
131
132        .align  64
133x86_traps:
134        .quad   x86_trap00, x86_trap01
135        .quad   x86_trap02, x86_trap03
136        .quad   x86_trap04, x86_trap05
137        .quad   x86_trap06, x86_trap07
138        .quad   x86_trap08, x86_trap09
139        .quad   x86_trap0a, x86_trap0b
140        .quad   x86_trap0c, x86_trap0d
141        .quad   x86_trap0e, x86_trap0f
142        .quad   x86_trap10, x86_trap11
143        .quad   x86_trap12, x86_trap13
144        .quad   x86_trap14, x86_trap15
145        .quad   x86_trap16, x86_trap17
146        .quad   x86_trap18, x86_trap19
147        .quad   x86_trap1a, x86_trap1b
148        .quad   x86_trap1c, x86_trap1d
149        .quad   x86_trap1e, x86_trap1f
150
Note: See TracBrowser for help on using the repository browser.