-/* taken from arch/ppc/kernel/ppc-stub.c */
+/* taken from arch/powerpc/kernel/ppc-stub.c */
/****************************************************************************
#include <kgdb.h>
#include <command.h>
-#if defined(CONFIG_CMD_KGDB)
-
#undef KGDB_DEBUG
/*
static unsigned char *
mem2hex(char *mem, char *buf, int count)
{
+ char *tmp;
unsigned char ch;
+ /*
+ * We use the upper half of buf as an intermediate buffer for the
+ * raw memory copy. Hex conversion will work against this one.
+ */
+ tmp = buf + count;
longjmp_on_fault = 1;
+
+ memcpy(tmp, mem, count);
+
while (count-- > 0) {
- ch = *mem++;
+ ch = *tmp++;
*buf++ = hexchars[ch >> 4];
*buf++ = hexchars[ch & 0xf];
}
static char *
hex2mem(char *buf, char *mem, int count)
{
- int i, hexValue;
- unsigned char ch;
- char *mem_start = mem;
+ int hexValue;
+ char *tmp_raw, *tmp_hex;
+
+ /*
+ * We use the upper half of buf as an intermediate buffer for the
+ * raw memory that is converted from hex.
+ */
+ tmp_raw = buf + count * 2;
+ tmp_hex = tmp_raw - 1;
longjmp_on_fault = 1;
- for (i=0; i<count; i++) {
- if ((hexValue = hex(*buf++)) < 0)
+ while (tmp_hex >= buf) {
+ tmp_raw--;
+ hexValue = hex(*tmp_hex--);
+ if (hexValue < 0)
kgdb_error(KGDBERR_NOTHEXDIG);
- ch = hexValue << 4;
- if ((hexValue = hex(*buf++)) < 0)
+ *tmp_raw = hexValue;
+ hexValue = hex(*tmp_hex--);
+ if (hexValue < 0)
kgdb_error(KGDBERR_NOTHEXDIG);
- ch |= hexValue;
- *mem++ = ch;
+ *tmp_raw |= hexValue << 4;
+
}
- kgdb_flush_cache_range((void *)mem_start, (void *)(mem - 1));
+
+ memcpy(mem, tmp_raw, count);
+
+ kgdb_flush_cache_range((void *)mem, (void *)(mem+count));
longjmp_on_fault = 0;
return buf;
}
int
-do_kgdb(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+do_kgdb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
printf("Entering KGDB mode via exception handler...\n\n");
kgdb_breakpoint(argc - 1, argv + 1);
" program if it is executed (see the \"hello_world\"\n"
" example program in the U-Boot examples directory)."
);
-#else
-
-int kgdb_not_configured = 1;
-
-#endif