28,26 → 28,45 |
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#include <interrupt.h> |
#include <debug.h> |
#include <console/kconsole.h> |
#include <console/console.h> |
#include <console/chardev.h> |
#include <panic.h> |
#include <print.h> |
#include <symtab.h> |
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static struct { |
char *name; |
const char *name; |
iroutine f; |
} ivt[IVT_ITEMS]; |
} exc_table[IVT_ITEMS]; |
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iroutine exc_register(int n, char *name, iroutine f) |
static spinlock_t exctbl_lock; |
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/** Register exception handler |
* |
* @param n Exception number |
* @param name Description |
* @param f Exception handler |
*/ |
iroutine exc_register(int n, const char *name, iroutine f) |
{ |
ASSERT(n < IVT_ITEMS); |
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iroutine old; |
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old = ivt[n].f; |
ivt[n].f = f; |
ivt[n].name = name; |
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spinlock_lock(&exctbl_lock); |
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old = exc_table[n].f; |
exc_table[n].f = f; |
exc_table[n].name = name; |
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spinlock_unlock(&exctbl_lock); |
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return old; |
} |
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/* |
/** Dispatch exception according to exception table |
* |
* Called directly from the assembler code. |
* CPU is interrupts_disable()'d. |
*/ |
55,5 → 74,62 |
{ |
ASSERT(n < IVT_ITEMS); |
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ivt[n].f(n, stack); |
exc_table[n].f(n, stack); |
} |
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/** Default 'null' exception handler */ |
static void exc_undef(int n, void *stack) |
{ |
panic("Unhandled exception %d.", n); |
} |
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/** KConsole cmd - print all exceptions */ |
static int exc_print_cmd(cmd_arg_t *argv) |
{ |
int i; |
char *symbol; |
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spinlock_lock(&exctbl_lock); |
printf("Exc Handler Description\n"); |
for (i=0; i < IVT_ITEMS; i++) { |
symbol = get_symtab_entry((__native)exc_table[i].f); |
if (!symbol) |
symbol = "not found"; |
printf("%d %s 0x%p(%s)\n",i,exc_table[i].name, |
exc_table[i].f,symbol); |
if (!((i+1) % 20)) { |
printf("Press any key to continue."); |
getc(stdin); |
printf("\n"); |
} |
} |
spinlock_unlock(&exctbl_lock); |
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return 1; |
} |
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static cmd_info_t exc_info = { |
.name = "exc_print", |
.description = "Print exception table", |
.func = exc_print_cmd, |
.help = NULL, |
.argc = 0, |
.argv = NULL |
}; |
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/** Initialize generic exception handling support */ |
void exc_init(void) |
{ |
int i; |
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spinlock_initialize(&exctbl_lock, "exctbl_lock"); |
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for (i=0;i < IVT_ITEMS; i++) |
exc_register(i, "undef", exc_undef); |
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spinlock_initialize(&exc_info.lock, "kconsole_excinfo"); |
link_initialize(&exc_info.link); |
if (!cmd_register(&exc_info)) |
panic("could not register command %s\n", exc_info.name); |
} |
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