/* tc-tic54x.c -- Assembly code for the Texas Instruments TMS320C54X
- Copyright (C) 1999-2016 Free Software Foundation, Inc.
+ Copyright (C) 1999-2020 Free Software Foundation, Inc.
Contributed by Timothy Wall (twall@cygnus.com)
This file is part of GAS, the GNU Assembler.
#include "sb.h"
#include "macro.h"
#include "subsegs.h"
-#include "struc-symbol.h"
#include "opcode/tic54x.h"
#include "obj-coff.h"
#include <math.h>
static int assembly_begun = 0;
/* Addressing mode is not entirely implemented; the latest rev of the Other
assembler doesn't seem to make any distinction whatsoever; all relocations
- are stored as extended relocatiosn. Older versions used REL16 vs RELEXT16,
+ are stored as extended relocations. Older versions used REL16 vs RELEXT16,
but now it seems all relocations are RELEXT16. We use all RELEXT16.
The cpu version is kind of a waste of time as well. There is one
static struct hash_control *math_hash; /* Built-in math functions. */
/* Allow maximum levels of macro nesting; level 0 is the main substitution
symbol table. The other assembler only does 32 levels, so there! */
-static struct hash_control *subsym_hash[100];
+#define MAX_SUBSYM_HASH 100
+static struct hash_control *subsym_hash[MAX_SUBSYM_HASH];
/* Keep track of local labels so we can substitute them before GAS sees them
since macros use their own 'namespace' for local labels, use a separate hash
void
md_show_usage (FILE *stream)
{
- fprintf (stream, _("C54x-specific command line options:\n"));
+ fprintf (stream, _("C54x-specific command line options:\n"));
fprintf (stream, _("-mfar-mode | -mf Use extended addressing\n"));
fprintf (stream, _("-mcpu=<CPU version> Specify the CPU version\n"));
fprintf (stream, _("-merrors-to-file <filename>\n"));
fprintf (stream, _("-me <filename> Redirect errors to a file\n"));
}
-/* Output a single character (upper octect is zero). */
+/* Output a single character (upper octet is zero). */
static void
tic54x_emit_char (char c)
str = input_line_pointer;
while ((c = *input_line_pointer) != ',')
{
- if (is_end_of_line[(int) *input_line_pointer])
+ if (is_end_of_line[(unsigned char) c])
break;
++input_line_pointer;
}
symbolP = symbol_find_or_make (name);
if (S_GET_SEGMENT (symbolP) == bss_section)
- symbolP->sy_frag->fr_symbol = (symbolS *) NULL;
+ symbol_get_frag (symbolP)->fr_symbol = (symbolS *) NULL;
symbol_set_frag (symbolP, frag_now);
p = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP,
{
/* Offset is ignored in inner structs. */
SKIP_WHITESPACE ();
- if (!is_end_of_line[(int) *input_line_pointer])
+ if (!is_end_of_line[(unsigned char) *input_line_pointer])
start_offset = get_absolute_expression ();
else
start_offset = 0;
int longword_align = 0;
SKIP_WHITESPACE ();
- if (!is_end_of_line[(int) *input_line_pointer])
+ if (!is_end_of_line[(unsigned char) *input_line_pointer])
count = get_absolute_expression ();
switch (type)
if (c == ',')
{
input_line_pointer++;
- if (is_end_of_line[(int) *input_line_pointer])
+ if (is_end_of_line[(unsigned char) *input_line_pointer])
c = *input_line_pointer;
}
}
{
char *name = NULL;
int len;
+ /* Make sure all named initialized sections flagged properly. If we
+ encounter instructions, we'll flag it with SEC_CODE as well. */
+ const char *flags = ",\"w\"\n";
/* If there are quotes, remove them. */
if (*input_line_pointer == '"')
{
name = demand_copy_C_string (&len);
demand_empty_rest_of_line ();
- name = strcpy (xmalloc (len + 10), name);
+ name = concat (name, flags, (char *) NULL);
}
else
{
int c;
c = get_symbol_name (&name);
- len = strlen(name);
- name = strcpy (xmalloc (len + 10), name);
+ name = concat (name, flags, (char *) NULL);
(void) restore_line_pointer (c);
demand_empty_rest_of_line ();
}
- /* Make sure all named initialized sections flagged properly. If we
- encounter instructions, we'll flag it with SEC_CODE as well. */
- strcat (name, ",\"w\"\n");
input_scrub_insert_line (name);
obj_coff_section (0);
blocking_flag = alignment_flag = 0;
seg = subseg_new (name, 0);
- flags = bfd_get_section_flags (stdoutput, seg) | SEC_ALLOC;
+ flags = bfd_section_flags (seg) | SEC_ALLOC;
if (alignment_flag)
{
if (blocking_flag)
flags |= SEC_TIC54X_BLOCK;
- if (!bfd_set_section_flags (stdoutput, seg, flags))
+ if (!bfd_set_section_flags (seg, flags))
as_warn (_("Error setting flags for \"%s\": %s"), name,
bfd_errmsg (bfd_get_error ()));
SKIP_WHITESPACE ();
ver = input_line_pointer;
- while (!is_end_of_line[(int) *input_line_pointer])
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
c = *input_line_pointer;
*input_line_pointer = 0;
/* Only ".align" with no argument is allowed within .struct/.union. */
int count = arg;
- if (!is_end_of_line[(int) *input_line_pointer])
+ if (!is_end_of_line[(unsigned char) *input_line_pointer])
{
if (arg == 2)
as_warn (_("Argument to .even ignored"));
s_align_bytes (count << 1);
}
-/* Initialize multiple-bit fields withing a single word of memory. */
+/* Initialize multiple-bit fields within a single word of memory. */
static void
tic54x_field (int ignore ATTRIBUTE_UNUSED)
{
if (!tic54x_initialized_section (seg))
{
- as_bad (_("Current section is unitialized, "
+ as_bad (_("Current section is uninitialized, "
"section name required for .clink"));
ignore_rest_of_line ();
return;
set to "." instead. */
static void
-tic54x_set_default_include (int dot)
+tic54x_set_default_include (void)
{
- const char *dir = ".";
- char *tmp = NULL;
+ char *dir, *tmp = NULL;
+ const char *curfile;
+ unsigned lineno;
- if (!dot)
- {
- const char *curfile;
- unsigned lineno;
-
- curfile = as_where (&lineno);
- dir = xstrdup (curfile);
- tmp = strrchr (dir, '/');
- }
+ curfile = as_where (&lineno);
+ dir = xstrdup (curfile);
+ tmp = strrchr (dir, '/');
if (tmp != NULL)
{
int len;
else
{
filename = input_line_pointer;
- while (!is_end_of_line[(int) *input_line_pointer])
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
c = *input_line_pointer;
*input_line_pointer = '\0';
and a .newblock.
The included file will be inserted before the newblock, so that the
newblock is executed after the included file is processed. */
- input = xmalloc (sizeof (newblock) + strlen (filename) + 4);
- sprintf (input, "\"%s\"\n%s", filename, newblock);
+ input = concat ("\"", filename, "\"\n", newblock, (char *) NULL);
input_scrub_insert_line (input);
tic54x_clear_local_labels (0);
- tic54x_set_default_include (0);
+ tic54x_set_default_include ();
s_include (0);
}
else
{
msg = input_line_pointer;
- while (!is_end_of_line[(int) *input_line_pointer])
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
++input_line_pointer;
c = *input_line_pointer;
*input_line_pointer = 0;
static void
tic54x_mmregs (int ignored ATTRIBUTE_UNUSED)
{
- symbol *sym;
+ tic54x_symbol *sym;
ILLEGAL_WITHIN_STRUCT ();
- for (sym = (symbol *) mmregs; sym->name; sym++)
+ for (sym = (tic54x_symbol *) mmregs; sym->name; sym++)
{
symbolS *symbolP = symbol_new (sym->name, absolute_section,
(valueT) sym->value, &zero_address_frag);
ILLEGAL_WITHIN_STRUCT ();
SKIP_WHITESPACE ();
- if (!is_end_of_line[(int) *input_line_pointer])
+ if (!is_end_of_line[(unsigned char) *input_line_pointer])
count = get_absolute_expression ();
- do_repeat (count, "LOOP", "ENDLOOP");
+ do_repeat ((size_t) count, "LOOP", "ENDLOOP");
}
/* Normally, endloop gets eaten by the preceding loop. */
ILLEGAL_WITHIN_STRUCT ();
SKIP_WHITESPACE ();
- if (!is_end_of_line[(int) *input_line_pointer])
+ if (!is_end_of_line[(unsigned char) *input_line_pointer])
cond = get_absolute_expression ();
if (cond)
seg->flags |= SEC_TIC54X_BLOCK;
c = *input_line_pointer;
- if (!is_end_of_line[(int) c])
+ if (!is_end_of_line[(unsigned char) c])
++input_line_pointer;
}
if (c == ',')
{
++input_line_pointer;
- if (is_end_of_line[(int) *input_line_pointer])
+ if (is_end_of_line[(unsigned char) *input_line_pointer])
c = *input_line_pointer;
}
}
{
SKIP_WHITESPACE ();
len = 0;
- while (!is_end_of_line[(int) *input_line_pointer]
+ while (!is_end_of_line[(unsigned char) *input_line_pointer]
&& !ISSPACE (*input_line_pointer))
{
obstack_1grow (¬es, *input_line_pointer);
}
demand_empty_rest_of_line ();
- tic54x_set_default_include (0);
+ tic54x_set_default_include ();
path = XNEWVEC (char, (unsigned long) len + include_dir_maxlen + 5);
for (i = 0; i < include_dir_count; i++)
void
tic54x_macro_start (void)
{
- ++macro_level;
+ if (++macro_level >= MAX_SUBSYM_HASH)
+ {
+ as_fatal (_("Macro nesting is too deep"));
+ return;
+ }
subsym_hash[macro_level] = hash_new ();
local_label_hash[macro_level] = hash_new ();
}
/* Put the formal args into the substitution symbol table. */
for (entry = macro->formals; entry; entry = entry->next)
{
- char *name = strncpy (xmalloc (entry->name.len + 1),
- entry->name.ptr, entry->name.len);
- char *value = strncpy (xmalloc (entry->actual.len + 1),
- entry->actual.ptr, entry->actual.len);
+ char *name = xstrndup (entry->name.ptr, entry->name.len);
+ char *value = xstrndup (entry->actual.ptr, entry->actual.len);
name[entry->name.len] = '\0';
value[entry->actual.len] = '\0';
md_begin (void)
{
insn_template *tm;
- symbol *sym;
+ tic54x_symbol *sym;
const subsym_proc_entry *subsym_proc;
const math_proc_entry *math_proc;
const char *hash_err;
tm->name, hash_err);
}
reg_hash = hash_new ();
- for (sym = (symbol *) regs; sym->name; sym++)
+ for (sym = (tic54x_symbol *) regs; sym->name; sym++)
{
/* Add basic registers to the symbol table. */
symbolS *symbolP = symbol_new (sym->name, absolute_section,
symbol_table_insert (symbolP);
hash_err = hash_insert (reg_hash, sym->name, (char *) sym);
}
- for (sym = (symbol *) mmregs; sym->name; sym++)
+ for (sym = (tic54x_symbol *) mmregs; sym->name; sym++)
hash_err = hash_insert (reg_hash, sym->name, (char *) sym);
mmreg_hash = hash_new ();
- for (sym = (symbol *) mmregs; sym->name; sym++)
+ for (sym = (tic54x_symbol *) mmregs; sym->name; sym++)
hash_err = hash_insert (mmreg_hash, sym->name, (char *) sym);
cc_hash = hash_new ();
- for (sym = (symbol *) condition_codes; sym->name; sym++)
+ for (sym = (tic54x_symbol *) condition_codes; sym->name; sym++)
hash_err = hash_insert (cc_hash, sym->name, (char *) sym);
cc2_hash = hash_new ();
- for (sym = (symbol *) cc2_codes; sym->name; sym++)
+ for (sym = (tic54x_symbol *) cc2_codes; sym->name; sym++)
hash_err = hash_insert (cc2_hash, sym->name, (char *) sym);
cc3_hash = hash_new ();
- for (sym = (symbol *) cc3_codes; sym->name; sym++)
+ for (sym = (tic54x_symbol *) cc3_codes; sym->name; sym++)
hash_err = hash_insert (cc3_hash, sym->name, (char *) sym);
sbit_hash = hash_new ();
- for (sym = (symbol *) status_bits; sym->name; sym++)
+ for (sym = (tic54x_symbol *) status_bits; sym->name; sym++)
hash_err = hash_insert (sbit_hash, sym->name, (char *) sym);
misc_symbol_hash = hash_new ();
int expecting_operand = 0;
int i;
- while (numexp < MAX_OPERANDS && !is_end_of_line[(int) *lptr])
+ while (numexp < MAX_OPERANDS && !is_end_of_line[(unsigned char) *lptr])
{
int paren_not_balanced = 0;
char *op_start, *op_end;
while (*lptr && ISSPACE (*lptr++))
;
- if (!is_end_of_line[(int) *lptr])
+ if (!is_end_of_line[(unsigned char) *lptr])
{
as_bad (_("Extra junk on line"));
return -1;
static int
encode_condition (tic54x_insn *insn, struct opstruct *operand)
{
- symbol *cc = (symbol *) hash_find (cc_hash, operand->buf);
+ tic54x_symbol *cc = (tic54x_symbol *) hash_find (cc_hash, operand->buf);
if (!cc)
{
as_bad (_("Unrecognized condition code \"%s\""), operand->buf);
static int
encode_cc3 (tic54x_insn *insn, struct opstruct *operand)
{
- symbol *cc3 = (symbol *) hash_find (cc3_hash, operand->buf);
+ tic54x_symbol *cc3 = (tic54x_symbol *) hash_find (cc3_hash, operand->buf);
int value = cc3 ? cc3->value : operand->exp.X_add_number << 8;
if ((value & 0x0300) != value)
static int
encode_cc2 (tic54x_insn *insn, struct opstruct *operand)
{
- symbol *cc2 = (symbol *) hash_find (cc2_hash, operand->buf);
+ tic54x_symbol *cc2 = (tic54x_symbol *) hash_find (cc2_hash, operand->buf);
if (!cc2)
{
0, 65535, 0xFFFF);
case OP_SBIT:
{
- symbol *sbit = (symbol *) hash_find (sbit_hash, operand->buf);
+ tic54x_symbol *sbit = (tic54x_symbol *)
+ hash_find (sbit_hash, operand->buf);
int value = is_absolute (operand) ?
operand->exp.X_add_number : (sbit ? sbit->value : -1);
int reg = 0;
}
/* Guess the register based on the status bit; "ovb" is the last
status bit defined for st0. */
- if (sbit > (symbol *) hash_find (sbit_hash, "ovb"))
+ if (sbit > (tic54x_symbol *) hash_find (sbit_hash, "ovb"))
reg = 1;
}
if (value == -1)
emit_insn (tic54x_insn *insn)
{
int i;
- flagword oldflags = bfd_get_section_flags (stdoutput, now_seg);
+ flagword oldflags = bfd_section_flags (now_seg);
flagword flags = oldflags | SEC_CODE;
- if (! bfd_set_section_flags (stdoutput, now_seg, flags))
+ if (!bfd_set_section_flags (now_seg, flags))
as_warn (_("error setting flags for \"%s\": %s"),
- bfd_section_name (stdoutput, now_seg),
+ bfd_section_name (now_seg),
bfd_errmsg (bfd_get_error ()));
for (i = 0; i < insn->words; i++)
next_line_shows_parallel (char *next_line)
{
/* Look for the second half. */
- while (ISSPACE (*next_line))
+ while (*next_line != 0 && ISSPACE (*next_line))
++next_line;
return (next_line[0] == PARALLEL_SEPARATOR
while (ISDIGIT (*ptr))
++ptr;
endp = ptr;
- *str = xmalloc (ptr - line + 1);
- strncpy (*str, line, ptr - line);
- (*str)[ptr - line] = 0;
+ *str = xmemdup0 (line, ptr - line);
}
else if (is_string)
{
++term;
}
endp = ptr;
- *str = xmalloc (ptr - line + 1);
- strncpy (*str, line, ptr - line);
- (*str)[ptr - line] = 0;
+ *str = xmemdup0 (line, ptr - line);
/* Do simple substitution, if available. */
if (!nosub && (value = subsym_lookup (*str, macro_level)) != NULL)
*str = value;
if (strstr (line, ".macro"))
return line;
- while (!is_end_of_line[(int) *ptr])
+ unsigned char current_char;
+ while (!is_end_of_line[(current_char = * (unsigned char *) ptr)])
{
- int current_char = *ptr;
-
/* Need to update this since LINE may have been modified. */
if (eval_line)
eval_end = strrchr (ptr, ',');
continue;
}
*ptr++ = '\0';
- tmp = xmalloc (strlen (head) + 2 + strlen (ptr) + 1);
- sprintf (tmp, "%s==%s", head, ptr);
+ tmp = concat (head, "==", ptr, (char *) NULL);
/* Continue examining after the '=='. */
ptr = tmp + strlen (head) + 2;
free (replacement);
len = get_absolute_expression ();
if (beg + len > strlen (value))
{
- as_bad (_("Invalid length (use 0 to %d"),
+ as_bad (_("Invalid length (use 0 to %d)"),
(int) strlen (value) - beg);
break;
}
char *replacement = NULL;
/* Work with a copy of the input line, including EOL char. */
- endp = input_line_pointer;
- while (!is_end_of_line[(int) *endp++])
- ;
- line = xmalloc (endp - input_line_pointer + 1);
- strncpy (line, input_line_pointer, endp - input_line_pointer + 1);
- line[endp - input_line_pointer] = 0;
+ for (endp = input_line_pointer; *endp != 0; )
+ if (is_end_of_line[(unsigned char) *endp++])
+ break;
+
+ line = xmemdup0 (input_line_pointer, endp - input_line_pointer);
/* Scan ahead for parallel insns. */
parallel_on_next_line_hint = next_line_shows_parallel (endp);
{
if (words > delay_slots)
{
- as_bad (_("Instruction does not fit in available delay "
- "slots (%d-word insn, %d slots left)"),
+ as_bad (ngettext ("Instruction does not fit in available "
+ "delay slots (%d-word insn, %d slot left)",
+ "Instruction does not fit in available "
+ "delay slots (%d-word insn, %d slots left)",
+ delay_slots),
words, delay_slots);
delay_slots = 0;
return;
{
if (words > delay_slots)
{
- as_warn (_("Instruction does not fit in available delay "
- "slots (%d-word insn, %d slots left). "
- "Resulting behavior is undefined."),
+ as_warn (ngettext ("Instruction does not fit in available "
+ "delay slots (%d-word insn, %d slot left). "
+ "Resulting behavior is undefined.",
+ "Instruction does not fit in available "
+ "delay slots (%d-word insn, %d slots left). "
+ "Resulting behavior is undefined.",
+ delay_slots),
words, delay_slots);
delay_slots = 0;
return;
symbolS *
tic54x_undefined_symbol (char *name)
{
- symbol *sym;
+ tic54x_symbol *sym;
/* Not sure how to handle predefined symbols. */
- if ((sym = (symbol *) hash_find (cc_hash, name)) != NULL ||
- (sym = (symbol *) hash_find (cc2_hash, name)) != NULL ||
- (sym = (symbol *) hash_find (cc3_hash, name)) != NULL ||
- (sym = (symbol *) hash_find (misc_symbol_hash, name)) != NULL ||
- (sym = (symbol *) hash_find (sbit_hash, name)) != NULL)
+ if ((sym = (tic54x_symbol *) hash_find (cc_hash, name)) != NULL ||
+ (sym = (tic54x_symbol *) hash_find (cc2_hash, name)) != NULL ||
+ (sym = (tic54x_symbol *) hash_find (cc3_hash, name)) != NULL ||
+ (sym = (tic54x_symbol *) hash_find (misc_symbol_hash, name)) != NULL ||
+ (sym = (tic54x_symbol *) hash_find (sbit_hash, name)) != NULL)
{
return symbol_new (name, reg_section,
(valueT) sym->value,
&zero_address_frag);
}
- if ((sym = (symbol *) hash_find (reg_hash, name)) != NULL ||
- (sym = (symbol *) hash_find (mmreg_hash, name)) != NULL ||
+ if ((sym = (tic54x_symbol *) hash_find (reg_hash, name)) != NULL ||
+ (sym = (tic54x_symbol *) hash_find (mmreg_hash, name)) != NULL ||
!strcasecmp (name, "a") || !strcasecmp (name, "b"))
{
return symbol_new (name, reg_section,
Don't allow labels to start with '.' */
int
-tic54x_start_label (int nul_char, int next_char)
+tic54x_start_label (char * label_start, int nul_char, int next_char)
{
char *rest;
/* Disallow labels starting with "." */
if (next_char != ':')
{
- char *label = input_line_pointer;
-
- while (!is_end_of_line[(int) label[-1]])
- --label;
- if (*label == '.')
+ if (*label_start == '.')
{
- as_bad (_("Invalid label '%s'"), label);
+ as_bad (_("Invalid label '%s'"), label_start);
return 0;
}
}
- if (is_end_of_line[(int) next_char])
+ if (is_end_of_line[(unsigned char) next_char])
return 1;
rest = input_line_pointer;
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