/* tc-moxie.c -- Assemble code for moxie
- Copyright 2009
- Free Software Foundation, Inc.
+ Copyright (C) 2009-2014 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
const char FLT_CHARS[] = "rRsSfFdDxXpP";
const char EXP_CHARS[] = "eE";
-static int md_chars_to_number (char *val, int n);
+static valueT md_chars_to_number (char * buf, int n);
+
+/* Byte order. */
+extern int target_big_endian;
+const char *moxie_target_format = DEFAULT_TARGET_FORMAT;
void
md_operand (expressionS *op __attribute__((unused)))
reg = parse_register_operand (&op_end);
iword += (reg << 8);
if (*op_end != ',')
- as_warn (_("expecting comma delimeted register operands"));
+ as_warn (_("expecting comma delimited register operands"));
op_end++;
op_end = parse_exp_save_ilp (op_end, &arg);
fix_new_exp (frag_now,
- ((p+1) - frag_now->fr_literal),
+ ((p + (target_big_endian ? 1 : 0)) - frag_now->fr_literal),
1,
&arg,
0,
int dest, src;
dest = parse_register_operand (&op_end);
if (*op_end != ',')
- as_warn (_("expecting comma delimeted register operands"0);
+ as_warn (_("expecting comma delimited register operands"));
op_end++;
src = parse_register_operand (&op_end);
iword += (dest << 4) + src;
int a, b;
a = parse_register_operand (&op_end);
if (*op_end != ',')
- as_warn (_("expecting comma delimeted register operands"));
+ as_warn (_("expecting comma delimited register operands"));
op_end++;
if (*op_end != '(')
{
}
op_end++;
if (*op_end != ',')
- as_warn (_("expecting comma delimeted register operands"));
+ as_warn (_("expecting comma delimited register operands"));
op_end++;
b = parse_register_operand (&op_end);
iword += (a << 4) + b;
return NULL;
}
-\f
-const char *md_shortopts = "";
+
+enum options
+{
+ OPTION_EB = OPTION_MD_BASE,
+ OPTION_EL,
+};
struct option md_longopts[] =
{
- {NULL, no_argument, NULL, 0}
+ { "EB", no_argument, NULL, OPTION_EB},
+ { "EL", no_argument, NULL, OPTION_EL},
+ { NULL, no_argument, NULL, 0}
};
+
size_t md_longopts_size = sizeof (md_longopts);
+\f
+const char *md_shortopts = "";
-/* We have no target specific options yet, so these next
- two functions are empty. */
int
md_parse_option (int c ATTRIBUTE_UNUSED, char *arg ATTRIBUTE_UNUSED)
{
- return 0;
+ switch (c)
+ {
+ case OPTION_EB:
+ target_big_endian = 1;
+ moxie_target_format = "elf32-bigmoxie";
+ break;
+ case OPTION_EL:
+ target_big_endian = 0;
+ moxie_target_format = "elf32-littlemoxie";
+ break;
+ default:
+ return 0;
+ }
+
+ return 1;
}
void
md_show_usage (FILE *stream ATTRIBUTE_UNUSED)
{
+ fprintf (stream, _("\
+ -EB assemble for a big endian system (default)\n\
+ -EL assemble for a little endian system\n"));
}
/* Apply a fixup to the object file. */
long val = *valP;
long newval;
long max, min;
- int shift;
max = min = 0;
- shift = 0;
switch (fixP->fx_r_type)
{
case BFD_RELOC_32:
- *buf++ = val >> 24;
- *buf++ = val >> 16;
- *buf++ = val >> 8;
- *buf++ = val >> 0;
+ if (target_big_endian)
+ {
+ buf[0] = val >> 24;
+ buf[1] = val >> 16;
+ buf[2] = val >> 8;
+ buf[3] = val >> 0;
+ }
+ else
+ {
+ buf[3] = val >> 24;
+ buf[2] = val >> 16;
+ buf[1] = val >> 8;
+ buf[0] = val >> 0;
+ }
+ buf += 4;
break;
case BFD_RELOC_16:
- *buf++ = val >> 8;
- *buf++ = val >> 0;
+ if (target_big_endian)
+ {
+ buf[0] = val >> 8;
+ buf[1] = val >> 0;
+ }
+ else
+ {
+ buf[1] = val >> 8;
+ buf[0] = val >> 0;
+ }
+ buf += 2;
break;
case BFD_RELOC_8:
fixP->fx_done = 1;
}
-/* Put number into target byte order (big endian). */
+/* Put number into target byte order. */
void
-md_number_to_chars (char *ptr, valueT use, int nbytes)
+md_number_to_chars (char * ptr, valueT use, int nbytes)
{
- number_to_chars_bigendian (ptr, use, nbytes);
+ if (target_big_endian)
+ number_to_chars_bigendian (ptr, use, nbytes);
+ else
+ number_to_chars_littleendian (ptr, use, nbytes);
}
/* Convert from target byte order to host byte order. */
-static int
-md_chars_to_number (char *val, int n)
+static valueT
+md_chars_to_number (char * buf, int n)
{
- int retval = 0;
+ valueT result = 0;
+ unsigned char * where = (unsigned char *) buf;
- while (n--)
+ if (target_big_endian)
{
- retval <<= 8;
- retval |= (*val++ & 255);
+ while (n--)
+ {
+ result <<= 8;
+ result |= (*where++ & 255);
+ }
+ }
+ else
+ {
+ while (n--)
+ {
+ result <<= 8;
+ result |= (where[n] & 255);
+ }
}
- return retval;
+ return result;
}
/* Generate a machine-dependent relocation. */
case BFD_RELOC_32:
return addr + 4;
case BFD_RELOC_MOXIE_10_PCREL:
- return addr;
+ /* Offset is from the end of the instruction. */
+ return addr + 2;
default:
abort ();
return addr;