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/*
* Copyright (c) 2008-2015 Travis Geiselbrecht
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <ctype.h>
#include <debug.h>
#include <err.h>
#include <stdlib.h>
#include <printf.h>
#include <stdio.h>
#include <lib/backtrace/backtrace.h>
#include <list.h>
#include <arch/ops.h>
#include <platform.h>
#include <platform/debug.h>
#include <kernel/spinlock.h>
#include <kernel/thread.h>
void spin(uint32_t usecs)
{
lk_time_ns_t nsecs = usecs * 1000ULL;
lk_time_ns_t start = current_time_ns();
while ((current_time_ns() - start) < nsecs)
;
}
/*
* This function relies on the "panic" macro decorating the format string so
* that the message can be output using a single print statement.
*/
void _panic(const char *fmt, ...)
{
va_list ap;
struct thread *curr = get_current_thread();
if (thread_lock_held()) {
printf("panic called with thread lock held\n");
thread_unlock_ints_disabled();
}
dump_backtrace();
if (curr && thread_get_flag_exit_on_panic(curr)) {
thread_exit(ERR_FAULT);
}
va_start(ap, fmt);
vprintf(fmt, ap);
va_end(ap);
platform_halt(HALT_ACTION_HALT, HALT_REASON_SW_PANIC);
}
#if !DISABLE_DEBUG_OUTPUT
static int __panic_stdio_fgetc(void *ctx)
{
char c;
int err;
err = platform_pgetc(&c, false);
if (err < 0)
return err;
return (unsigned char)c;
}
static ssize_t __panic_stdio_read(io_handle_t *io, char *s, size_t len)
{
if (len == 0)
return 0;
int err = platform_pgetc(s, false);
if (err < 0)
return err;
return 1;
}
static ssize_t __panic_stdio_write(io_handle_t *io, const char *s, size_t len)
{
for (size_t i = 0; i < len; i++) {
platform_pputc(s[i]);
}
return len;
}
FILE *get_panic_fd(void)
{
static const io_handle_hooks_t panic_hooks = {
.write = __panic_stdio_write,
.read = __panic_stdio_read,
};
static io_handle_t panic_io = {
.magic = IO_HANDLE_MAGIC,
.hooks = &panic_hooks
};
static FILE panic_fd = {
.io = &panic_io
};
return &panic_fd;
}
void hexdump(const void *ptr, size_t len)
{
addr_t address = (addr_t)ptr;
size_t count;
for (count = 0 ; count < len; count += 16) {
union {
uint32_t buf[4];
uint8_t cbuf[16];
} u;
size_t s = round_up(MIN(len - count, 16), 4);
size_t i;
printf("0x%08lx: ", address);
for (i = 0; i < s / 4; i++) {
u.buf[i] = ((const uint32_t *)address)[i];
printf("%08x ", u.buf[i]);
}
for (; i < 4; i++) {
printf(" ");
}
printf("|");
for (i=0; i < 16; i++) {
unsigned char c = u.cbuf[i];
if (i < s && isprint(c)) {
printf("%c", c);
} else {
printf(".");
}
}
printf("|\n");
address += 16;
}
}
void hexdump8_ex(const void *ptr, size_t len, uint64_t disp_addr)
{
addr_t address = (addr_t)ptr;
size_t count;
size_t i;
const char *addr_fmt = ((disp_addr + len) > 0xFFFFFFFF)
? "0x%016llx: "
: "0x%08llx: ";
for (count = 0 ; count < len; count += 16) {
printf(addr_fmt, disp_addr + count);
for (i=0; i < MIN(len - count, 16); i++) {
printf("%02hhx ", *(const uint8_t *)(address + i));
}
for (; i < 16; i++) {
printf(" ");
}
printf("|");
for (i=0; i < MIN(len - count, 16); i++) {
unsigned char c = ((const char *)address)[i];
printf("%c", isprint(c) ? c : '.');
}
printf("\n");
address += 16;
}
}
#endif // !DISABLE_DEBUG_OUTPUT
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