/* tc-z8k.c -- Assemble code for the Zilog Z800n
- Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002
+ Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
int segmented_mode;
const int md_reloc_size;
+/* This is non-zero if target was set from the command line. */
+static int z8k_target_from_cmdline;
+
static void s_segm PARAMS ((int));
-static void s_unseg PARAMS ((int));
static void even PARAMS ((int));
static int tohex PARAMS ((int));
static void sval PARAMS ((int));
static void
-s_segm (ignore)
- int ignore ATTRIBUTE_UNUSED;
+s_segm (segm)
+ int segm;
{
+ if (segm)
+ {
segmented_mode = 1;
machine = bfd_mach_z8001;
coff_flags = F_Z8001;
-}
-
-static void
-s_unseg (ignore)
- int ignore ATTRIBUTE_UNUSED;
-{
+ }
+ else
+ {
segmented_mode = 0;
machine = bfd_mach_z8002;
coff_flags = F_Z8002;
+ }
}
static void
{"import" , s_ignore , 0},
{"page" , listing_eject , 0},
{"program", s_ignore , 0},
- {"z8001" , s_segm , 0},
- {"z8002" , s_unseg , 0},
+ {"z8001" , s_segm , 1},
+ {"z8002" , s_segm , 0},
- {"segm" , s_segm , 0},
- {"unsegm" , s_unseg , 0},
- {"unseg" , s_unseg , 0},
+ {"segm" , s_segm , 1},
+ {"unsegm" , s_segm , 0},
+ {"unseg" , s_segm , 0},
{"name" , s_app_file , 0},
{"global" , s_globl , 0},
{"wval" , cons , 2},
}
/* Default to z8002. */
- s_unseg (0);
+ if (! z8k_target_from_cmdline)
+ s_segm (0);
/* Insert the pseudo ops, too. */
for (idx = 0; md_pseudo_table[idx].poc_name; idx++)
fake_opcode->opcode = 250;
hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode);
}
-
- linkrelax = 1;
}
struct z8k_exp {
static opcode_entry_type *get_specific
PARAMS ((opcode_entry_type *, op_type *));
static void newfix
- PARAMS ((int, int, expressionS *));
+ PARAMS ((int, int, int, expressionS *));
static char *apply_fix
PARAMS ((char *, int, expressionS *, int));
static void build_bytes
fail:
;
}
+ /* No interrupt type specified, opcode won't do anything. */
+ as_warn (_("opcode has no effect."));
the_interrupt = 0x0;
return;
}
struct cc_names {
int value;
char *name;
-
};
struct cc_names table[] = {
if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK))
{
- /* It could be an pc rel operand, if this is a da mode
+ /* It could be a pc rel operand, if this is a da mode
and we like disps, then insert it. */
if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP)
static char buffer[20];
static void
-newfix (ptr, type, operand)
+newfix (ptr, type, size, operand)
int ptr;
int type;
+ int size; /* nibbles. */
expressionS *operand;
{
if (operand->X_add_symbol
{
fix_new_exp (frag_now,
ptr,
- 1,
+ size / 2,
operand,
0,
type);
char *ptr;
int type;
expressionS *operand;
- int size;
+ int size; /* nibbles. */
{
- int n = operand->X_add_number;
+ long n = operand->X_add_number;
- newfix ((ptr - buffer) / 2, type, operand);
+ newfix ((ptr - buffer) / 2, type, size + 1, operand);
switch (size)
{
case 8: /* 8 nibbles == 32 bits. */
{
char *output_ptr = buffer;
int c;
- int nib;
int nibble;
unsigned int *class_ptr;
case CLASS_IMM:
{
- nib = 0;
switch (c & ARG_MASK)
{
case ARG_NIM4:
+ if (imm_operand->X_add_number > 15)
+ {
+ as_bad (_("immediate value out of range"));
+ }
imm_operand->X_add_number = -imm_operand->X_add_number;
- /* Drop through. */
- case ARG_IMM4:
output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
break;
+ /*case ARG_IMMNMINUS1: not used. */
case ARG_IMM4M1:
imm_operand->X_add_number--;
- output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
- break;
- case ARG_IMMNMINUS1:
- imm_operand->X_add_number--;
+ /* Drop through. */
+ case ARG_IMM4:
+ if (imm_operand->X_add_number > 15)
+ {
+ as_bad (_("immediate value out of range"));
+ }
output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1);
break;
case ARG_NIM8:
imm_operand->X_add_number = -imm_operand->X_add_number;
+ /* Drop through. */
case ARG_IMM8:
output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2);
break;
case ARG_IMM16:
output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4);
break;
-
case ARG_IMM32:
output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8);
break;
-
default:
abort ();
}
new_input_line_pointer = get_operands (opcode, op_end, operand);
if (new_input_line_pointer)
input_line_pointer = new_input_line_pointer;
- prev_opcode = opcode;
+ prev_opcode = opcode; /* XXX is this used ?? */
opcode = get_specific (opcode, operand);
printf (_("call to tc_crawl_symbol_chain \n"));
}
+/* We have no need to default values of symbols. */
+
symbolS *
md_undefined_symbol (name)
char *name ATTRIBUTE_UNUSED;
struct option md_longopts[] =
{
+#define OPTION_RELAX (OPTION_MD_BASE)
+ {"linkrelax", no_argument, NULL, OPTION_RELAX},
{NULL, no_argument, NULL, 0}
};
{
case 'z':
if (!strcmp (arg, "8001"))
- s_segm (0);
+ s_segm (1);
else if (!strcmp (arg, "8002"))
- s_unseg (0);
+ s_segm (0);
else
{
as_bad (_("invalid architecture -z%s"), arg);
return 0;
}
+ z8k_target_from_cmdline = 1;
+ break;
+
+ case OPTION_RELAX:
+ linkrelax = 1;
break;
default:
FILE *stream;
{
fprintf (stream, _("\
-Z8K options:\n\
--z8001 generate segmented code\n\
--z8002 generate unsegmented code\n"));
+ Z8K options:\n\
+ -z8001 generate segmented code\n\
+ -z8002 generate unsegmented code\n\
+ -linkrelax create linker relaxable code\n"));
}
\f
void
segT seg ATTRIBUTE_UNUSED;
fragS *fragP ATTRIBUTE_UNUSED;
{
- printf (_("call to md_convert_frag \n"));
+ printf (_("call to md_convert_frag\n"));
abort ();
}
switch (fixP->fx_r_type)
{
case R_IMM4L:
- buf[0] = (buf[0] & 0xf0) | ((buf[0] + val) & 0xf);
+ buf[0] = (buf[0] & 0xf0) | (val & 0xf);
break;
case R_JR:
-
+ val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
+ if (val & 1)
+ as_bad (_("cannot branch to odd address"));
+ val /= 2;
+ if (val > 127 || val < -128)
+ as_bad (_("relative jump out of range"));
*buf++ = val;
-#if 0
- if (val != 0)
- abort ();
-#endif
+ fixP->fx_no_overflow = 1;
break;
case R_DISP7:
+ val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
+ if (val & 1)
+ as_bad (_("cannot branch to odd address"));
+ val /= 2;
+ if (val > 0 || val < -128)
+ as_bad (_("relative jump out of range"));
+ *buf = (*buf & 0x80) | (val & 0x7f);
+ fixP->fx_no_overflow = 1;
+ break;
- *buf++ += val;
-#if 0
- if (val != 0)
- abort ();
-#endif
+ case R_CALLR:
+ if (val > 8191 || val < -8192)
+ as_bad (_("relative call out of range"));
+ val = -val;
+ *buf++ = (buf[0] & 0xf0) | ((val >> 8) & 0xf);
+ *buf++ = val & 0xff;
break;
case R_IMM8:
- buf[0] += val;
+ *buf++ = val;
break;
+
case R_IMM16:
*buf++ = (val >> 8);
*buf++ = val;
break;
+
case R_IMM32:
*buf++ = (val >> 24);
*buf++ = (val >> 16);
*buf++ = (val >> 8);
*buf++ = val;
break;
+
+ case R_REL16:
+ val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size;
+ if (val > 32767 || val < -32768)
+ as_bad (_("relative address out of range"));
+ *buf++ = (val >> 8);
+ *buf++ = val;
+ fixP->fx_no_overflow = 1;
+ break;
+
#if 0
case R_DA | R_SEG:
*buf++ = (val >> 16);
break;
default:
+ printf(_("md_apply_fix3: unknown r_type 0x%x\n"), fixP->fx_r_type);
abort ();
}
register fragS *fragP ATTRIBUTE_UNUSED;
register segT segment_type ATTRIBUTE_UNUSED;
{
- printf (_("call tomd_estimate_size_before_relax\n"));
+ printf (_("call to md_estimate_size_before_relax\n"));
abort ();
}
projects / deliverable / binutils-gdb.git / blobdiff