source: trunk/hal/x86_64/core/hal_exception.c @ 242

Last change on this file since 242 was 242, checked in by max@…, 5 years ago

add a dumb lock for the console

File size: 2.7 KB
Line 
1/*
2 * hal_exception.c - Implementation of exception handler 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_irqmask.h>
24#include <hal_exception.h>
25#include <thread.h>
26#include <errno.h>
27#include <core.h>
28#include <do_exception.h>
29
30#include <hal_kentry.h>
31#include <hal_internal.h>
32
33static const char *exc_type[] = {
34        [T_PRIVINFLT]= "privileged instruction fault",
35        [T_BPTFLT] = "breakpoint trap",
36        [T_ARITHTRAP] = "arithmetic trap",
37        [T_ASTFLT] = "asynchronous system trap",
38        [T_PROTFLT] = "protection fault",
39        [T_TRCTRAP] = "trace trap",
40        [T_PAGEFLT] = "page fault",
41        [T_ALIGNFLT] = "alignment fault",
42        [T_DIVIDE] = "integer divide fault",
43        [T_NMI] = "non-maskable interrupt",
44        [T_OFLOW] = "overflow trap",
45        [T_BOUND] = "bounds check fault",
46        [T_DNA] = "FPU not available fault",
47        [T_DOUBLEFLT] = "double fault",
48        [T_FPOPFLT] = "FPU operand fetch fault",
49        [T_TSSFLT] = "invalid TSS fault",
50        [T_SEGNPFLT] = "segment not present fault",
51        [T_STKFLT] = "stack fault",
52        [T_MCA] = "machine check fault",
53        [T_XMM] = "SSE FP exception",
54};
55int     exc_types = __arraycount(exc_type);
56
57/*
58 * Hexception handler.
59 */
60void hal_exception_entry(hal_cpu_context_t *ctx)
61{
62        uint64_t excno = ctx->tf_trapno;
63        const char *buf;
64
65        if (excno < exc_types) {
66                buf = exc_type[excno];
67        } else {
68                buf = "unknown exception";
69        }
70
71        x86_lock();
72        x86_printf("\n****** EXCEPTION OCCURRED ******\n");
73        x86_printf("%s\n", (char *)buf);
74        x86_printf("-> rip = %Z\n", ctx->tf_rip);
75        x86_printf("-> rsp = %Z\n", ctx->tf_rsp);
76        x86_printf("-> err = %Z\n", ctx->tf_err);
77        if (excno == T_PAGEFLT)
78                x86_printf("-> va  = %Z\n", rcr2());
79        x86_printf("****** EXCEPTION OCCURRED ******\n\n");
80        x86_unlock();
81
82        while (1);
83}
84
85/* -------------------------------------------------------------------------- */
86
87void hal_do_exception( thread_t * this,
88                       reg_t    * regs_tbl )
89{
90        x86_panic((char *)__func__);
91}
92
93void hal_exception_dump( thread_t * this,
94                         reg_t    * regs_tbl )
95{
96        x86_panic((char *)__func__);
97}
98
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