void
md_assemble (char *str)
{
char *op_start;
char *op_end;
moxie_opc_info_t *opcode;
char *p;
char pend;
unsigned short iword = 0;
int nlen = 0;
/* Drop leading whitespace. */
while (*str == ' ')
str++;
/* Find the op code end. */
op_start = str;
for (op_end = str;
*op_end && !is_end_of_line[*op_end & 0xff] && *op_end != ' ';
op_end++)
nlen++;
pend = *op_end;
*op_end = 0;
if (nlen == 0)
as_bad (_("can't find opcode "));
opcode = (moxie_opc_info_t *) hash_find (opcode_hash_control, op_start);
*op_end = pend;
if (opcode == NULL)
{
as_bad (_("unknown opcode %s"), op_start);
return;
}
p = frag_more (2);
switch (opcode->itype)
{
case MOXIE_F2_A8V:
iword = (1<<15) | (opcode->opcode << 12);
while (ISSPACE (*op_end))
op_end++;
{
expressionS arg;
int reg;
reg = parse_register_operand (&op_end);
iword += (reg << 8);
if (*op_end != ',')
as_warn (_("expecting comma delimited register operands"));
op_end++;
op_end = parse_exp_save_ilp (op_end, &arg);
fix_new_exp (frag_now,
((p + (target_big_endian ? 1 : 0)) - frag_now->fr_literal),
1,
&arg,
0,
BFD_RELOC_8);
}
break;
case MOXIE_F1_AB:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
{
int dest, src;
dest = parse_register_operand (&op_end);
if (*op_end != ',')
as_warn (_("expecting comma delimited register operands"));
op_end++;
src = parse_register_operand (&op_end);
iword += (dest << 4) + src;
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
}
break;
case MOXIE_F1_A4:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
{
expressionS arg;
char *where;
int regnum;
regnum = parse_register_operand (&op_end);
while (ISSPACE (*op_end))
op_end++;
iword += (regnum << 4);
if (*op_end != ',')
{
as_bad (_("expecting comma delimited operands"));
ignore_rest_of_line ();
return;
}
op_end++;
op_end = parse_exp_save_ilp (op_end, &arg);
where = frag_more (4);
fix_new_exp (frag_now,
(where - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_32);
}
break;
case MOXIE_F1_M:
case MOXIE_F1_4:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
{
expressionS arg;
char *where;
op_end = parse_exp_save_ilp (op_end, &arg);
where = frag_more (4);
fix_new_exp (frag_now,
(where - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_32);
}
break;
case MOXIE_F1_NARG:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
break;
case MOXIE_F1_A:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
{
int reg;
reg = parse_register_operand (&op_end);
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
iword += (reg << 4);
}
break;
case MOXIE_F1_ABi:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
{
int a, b;
a = parse_register_operand (&op_end);
if (*op_end != ',')
as_warn (_("expecting comma delimited register operands"));
op_end++;
if (*op_end != '(')
{
as_bad (_("expecting indirect register `($rA)'"));
ignore_rest_of_line ();
return;
}
op_end++;
b = parse_register_operand (&op_end);
if (*op_end != ')')
{
as_bad (_("missing closing parenthesis"));
ignore_rest_of_line ();
return;
}
op_end++;
iword += (a << 4) + b;
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
}
break;
case MOXIE_F1_AiB:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
{
int a, b;
if (*op_end != '(')
{
as_bad (_("expecting indirect register `($rA)'"));
ignore_rest_of_line ();
return;
}
op_end++;
a = parse_register_operand (&op_end);
if (*op_end != ')')
{
as_bad (_("missing closing parenthesis"));
ignore_rest_of_line ();
return;
}
op_end++;
if (*op_end != ',')
as_warn (_("expecting comma delimited register operands"));
op_end++;
b = parse_register_operand (&op_end);
iword += (a << 4) + b;
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
}
break;
case MOXIE_F1_4A:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
{
expressionS arg;
char *where;
int a;
op_end = parse_exp_save_ilp (op_end, &arg);
where = frag_more (4);
fix_new_exp (frag_now,
(where - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_32);
if (*op_end != ',')
{
as_bad (_("expecting comma delimited operands"));
ignore_rest_of_line ();
return;
}
op_end++;
a = parse_register_operand (&op_end);
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
iword += (a << 4);
}
break;
case MOXIE_F1_ABi2:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
{
expressionS arg;
char *offset;
int a, b;
a = parse_register_operand (&op_end);
while (ISSPACE (*op_end))
op_end++;
if (*op_end != ',')
{
as_bad (_("expecting comma delimited operands"));
ignore_rest_of_line ();
return;
}
op_end++;
op_end = parse_exp_save_ilp (op_end, &arg);
offset = frag_more (2);
fix_new_exp (frag_now,
(offset - frag_now->fr_literal),
2,
&arg,
0,
BFD_RELOC_16);
if (*op_end != '(')
{
as_bad (_("expecting indirect register `($rX)'"));
ignore_rest_of_line ();
return;
}
op_end++;
b = parse_register_operand (&op_end);
if (*op_end != ')')
{
as_bad (_("missing closing parenthesis"));
ignore_rest_of_line ();
return;
}
op_end++;
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
iword += (a << 4) + b;
}
break;
case MOXIE_F1_AiB2:
iword = opcode->opcode << 8;
while (ISSPACE (*op_end))
op_end++;
{
expressionS arg;
char *offset;
int a, b;
op_end = parse_exp_save_ilp (op_end, &arg);
offset = frag_more (2);
fix_new_exp (frag_now,
(offset - frag_now->fr_literal),
2,
&arg,
0,
BFD_RELOC_16);
if (*op_end != '(')
{
as_bad (_("expecting indirect register `($rX)'"));
ignore_rest_of_line ();
return;
}
op_end++;
a = parse_register_operand (&op_end);
if (*op_end != ')')
{
as_bad (_("missing closing parenthesis"));
ignore_rest_of_line ();
return;
}
op_end++;
if (*op_end != ',')
{
as_bad (_("expecting comma delimited operands"));
ignore_rest_of_line ();
return;
}
op_end++;
b = parse_register_operand (&op_end);
while (ISSPACE (*op_end))
op_end++;
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
iword += (a << 4) + b;
}
break;
case MOXIE_F2_NARG:
iword = opcode->opcode << 12;
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
break;
case MOXIE_F3_PCREL:
iword = (3<<14) | (opcode->opcode << 10);
while (ISSPACE (*op_end))
op_end++;
{
expressionS arg;
op_end = parse_exp_save_ilp (op_end, &arg);
fix_new_exp (frag_now,
(p - frag_now->fr_literal),
2,
&arg,
TRUE,
BFD_RELOC_MOXIE_10_PCREL);
}
break;
default:
abort ();
}
md_number_to_chars (p, iword, 2);
while (ISSPACE (*op_end))
op_end++;
if (*op_end != 0)
as_warn (_("extra stuff on line ignored"));
if (pending_reloc)
as_bad (_("Something forgot to clean up\n"));
}
/* Convert the instructions into frags and bytes */
void
md_assemble(char *str)
{
char *op_start;
char *op_end;
char op_name[10];
const bexkat1_opc_info_t *opcode;
char *p;
char pend;
unsigned int iword;
int nlen = 0;
int regnum;
expressionS arg;
int offset;
while (*str == ' ')
str++;
// mark opcode
op_start = str;
for (op_end = str;
*op_end && !is_end_of_line[*op_end & 0xff] && *op_end != ' ';
op_end++)
nlen++;
pend = *op_end;
*op_end = 0;
strncpy(op_name, op_start, 10);
*op_end = pend;
if (nlen == 0)
as_bad(_("can't find opcode "));
while (ISSPACE(*op_end))
op_end++;
opcode = (bexkat1_opc_info_t *) hash_find(opcode_hash_control, op_name);
if (opcode == NULL) {
as_bad(_("unknown opcode %s"), op_name);
return;
}
iword = (opcode->type << 28) | (opcode->opcode << 24) | opcode->size;
p = frag_more(4);
switch (opcode->type) {
case BEXKAT1_INH:
if (opcode->args == 0) {
md_number_to_chars(p, iword, 4);
}
if (opcode->args == 1) {
op_end = parse_exp_save_ilp(op_end, &arg);
if (opcode->size) {
md_number_to_chars(p, iword, 4);
p = frag_more(4);
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_32);
} else {
if (arg.X_op != O_constant) {
as_bad(_("offset is not a constant expression"));
ignore_rest_of_line();
return;
}
offset = arg.X_add_number;
if (offset < -16384 || offset > 16383) {
as_bad(_("offset is out of range: %d\n"), offset);
ignore_rest_of_line();
return;
}
md_number_to_chars(p, iword, 4);
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_BEXKAT1_15);
}
}
break;
case BEXKAT1_PUSH:
if (opcode->args == 1 && opcode->opcode == 2) // bsr
goto branch;
if (opcode->args == 1) {
if (opcode->size) {
op_end = parse_exp_save_ilp(op_end, &arg);
md_number_to_chars(p, iword, 4);
p = frag_more(4);
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_32);
} else {
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 20; // A
md_number_to_chars(p, iword, 4);
}
}
if (opcode->args == 2) {
if (*op_end != '(')
op_end = parse_exp_save_ilp(op_end, &arg);
else { // Implicit 0 offset to allow for indirect
arg.X_op = O_constant;
arg.X_add_number = 0;
}
if (*op_end != '(') {
as_bad(_("missing open paren: %s"), op_end);
ignore_rest_of_line();
return;
}
op_end++; // burn paren
while (ISSPACE(*op_end))
op_end++;
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 20; // A
if (*op_end != ')') {
as_bad(_("missing close paren: %s"), op_end);
ignore_rest_of_line();
return;
}
op_end++;
if (arg.X_op != O_constant) {
as_bad(_("offset is not a constant expression"));
ignore_rest_of_line();
return;
}
offset = arg.X_add_number;
if (offset < -16384 || offset > 16383) {
as_bad(_("offset is out of range: %d\n"), offset);
ignore_rest_of_line();
return;
}
md_number_to_chars(p, iword, 4);
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_BEXKAT1_15);
}
break;
case BEXKAT1_POP:
if (opcode->args == 0) {
md_number_to_chars(p, iword, 4);
}
if (opcode->args == 1) {
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 20; // A
md_number_to_chars(p, iword, 4);
}
break;
case BEXKAT1_MOV:
if (opcode->opcode == 0) {
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 20; // A
md_number_to_chars(p, iword, 4);
break;
}
/* __attribute__((fallthrough)); */
case BEXKAT1_CMP:
case BEXKAT1_FPU:
case BEXKAT1_FP:
case BEXKAT1_ALU:
case BEXKAT1_INT:
case BEXKAT1_INTU:
if (opcode->args > 1) {
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 20; // A
if (*op_end != ',') {
as_bad(_("missing comma: %s"), op_end);
return;
}
op_end++;
while (ISSPACE(*op_end))
op_end++;
}
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 16; // B
if (opcode->args > 2) {
if (*op_end != ',') {
as_bad(_("missing comma: %s"), op_end);
return;
}
op_end++;
while (ISSPACE(*op_end))
op_end++;
if (opcode->opcode < 8) {
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 12; // C
md_number_to_chars(p, iword, 4);
} else {
op_end = parse_exp_save_ilp(op_end, &arg);
if (arg.X_op != O_constant) {
as_bad(_("offset is not a constant expression"));
ignore_rest_of_line();
return;
}
offset = arg.X_add_number;
if (offset < -16384 || offset > 16383) {
as_bad(_("offset is out of range: %d\n"), offset);
ignore_rest_of_line();
return;
}
md_number_to_chars(p, iword, 4);
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_BEXKAT1_15);
}
} else {
md_number_to_chars(p, iword, 4);
}
break;
branch:
case BEXKAT1_BRANCH:
md_number_to_chars(p, iword, 4);
op_end = parse_exp_save_ilp(op_end, &arg);
if (target_big_endian)
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
TRUE,
BFD_RELOC_BEXKAT1_15_PCREL);
else
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
TRUE,
BFD_RELOC_BEXKAT1_15_PCREL);
break;
case BEXKAT1_LOAD:
case BEXKAT1_STORE:
// A,
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 20; // A
if (*op_end != ',') {
as_bad(_("missing comma: %s"), op_end);
return;
}
op_end++;
while (ISSPACE(*op_end))
op_end++;
/* __attribute__((fallthrough)); */
case BEXKAT1_JUMP:
if (opcode->size) { // big address
md_number_to_chars(p, iword, 4);
op_end = parse_exp_save_ilp(op_end, &arg);
p = frag_more(4);
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_32);
} else { // exp(B)
if (*op_end != '(')
op_end = parse_exp_save_ilp(op_end, &arg);
else { // Implicit 0 offset to allow for indirect
arg.X_op = O_constant;
arg.X_add_number = 0;
}
if (*op_end != '(') {
as_bad(_("missing open paren: %s"), op_end);
ignore_rest_of_line();
return;
}
op_end++; // burn paren
while (ISSPACE(*op_end))
op_end++;
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 16; // B
if (*op_end != ')') {
as_bad(_("missing close paren: %s"), op_end);
ignore_rest_of_line();
return;
}
op_end++;
if (arg.X_op != O_constant) {
as_bad(_("offset is not a constant expression"));
ignore_rest_of_line();
return;
}
offset = arg.X_add_number;
if (offset < -16384 || offset > 16383) {
as_bad(_("offset is out of range: %d\n"), offset);
ignore_rest_of_line();
return;
}
md_number_to_chars(p, iword, 4);
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_BEXKAT1_15);
}
break;
case BEXKAT1_LDI:
regnum = parse_regnum(&op_end);
if (regnum == -1)
return;
while (ISSPACE(*op_end))
op_end++;
iword |= (regnum & 0xf) << 20; // A
if (*op_end != ',') {
as_bad(_("missing comma: %s"), op_end);
return;
}
op_end++;
while (ISSPACE(*op_end))
op_end++;
op_end = parse_exp_save_ilp(op_end, &arg);
if (opcode->size) {
md_number_to_chars(p, iword, 4);
p = frag_more(4);
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_32);
} else {
if (arg.X_op != O_constant) {
as_bad(_("offset is not a constant expression"));
ignore_rest_of_line();
return;
}
offset = arg.X_add_number;
if (offset >= 32768) {
as_bad(_("offset is out of range: %d\n"), offset);
ignore_rest_of_line();
return;
}
md_number_to_chars(p, iword, 4);
fix_new_exp(frag_now,
(p - frag_now->fr_literal),
4,
&arg,
0,
BFD_RELOC_BEXKAT1_15);
}
break;
}
while (ISSPACE(*op_end))
op_end++;
if (*op_end != 0)
as_warn("extra stuff on line ignored %s %c", op_start, *op_end);
if (pending_reloc)
as_bad("Something forgot to clean up\n");
return;
}
