/* tc-arc.c -- Assembler for the ARC
- Copyright (C) 1994, 1995, 1997, 2000 Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1997, 1999, 2000, 2001, 2002
+ Free Software Foundation, Inc.
Contributed by Doug Evans (dje@cygnus.com).
This file is part of GAS, the GNU Assembler.
02111-1307, USA. */
#include <stdio.h>
-#include <ctype.h>
#include "libiberty.h"
#include "as.h"
+#include "struc-symbol.h"
+#include "safe-ctype.h"
#include "subsegs.h"
#include "opcode/arc.h"
#include "../opcodes/arc-ext.h"
#include "elf/arc.h"
+#include "dwarf2dbg.h"
extern int arc_get_mach PARAMS ((char *));
extern int arc_operand_type PARAMS ((int));
static void arc_extinst PARAMS ((int));
static void arc_extoper PARAMS ((int));
static void arc_option PARAMS ((int));
-static int get_arc_exp_reloc_type PARAMS ((int, int, expressionS *,
+static int get_arc_exp_reloc_type PARAMS ((int, int, expressionS *,
expressionS *));
+static void init_opcode_tables PARAMS ((int));
+
const struct suffix_classes {
char *name;
int len;
#define MAXSYNTAXCLASS (sizeof (syntaxclass) / sizeof (struct syntax_classes))
const pseudo_typeS md_pseudo_table[] = {
- { "align", s_align_bytes, 0 }, /* Defaulting is invalid (0) */
+ { "align", s_align_bytes, 0 }, /* Defaulting is invalid (0). */
{ "comm", arc_common, 0 },
{ "common", arc_common, 0 },
{ "lcomm", arc_common, 1 },
{ "4byte", cons, 4 },
{ "word", cons, 4 },
{ "option", arc_option, 0 },
+ { "cpu", arc_option, 0 },
{ "block", s_space, 0 },
{ "extcondcode", arc_extoper, 0 },
{ "extcoreregister", arc_extoper, 1 },
};
/* This array holds the chars that always start a comment. If the
- pre-processor is disabled, these aren't very useful */
+ pre-processor is disabled, these aren't very useful. */
const char comment_chars[] = "#;";
/* This array holds the chars that only start a comment at the beginning of
const char line_separator_chars[] = "";
-/* Chars that can be used to separate mant from exp in floating point nums */
+/* Chars that can be used to separate mant from exp in floating point nums. */
const char EXP_CHARS[] = "eE";
-/* Chars that mean this number is a floating point constant */
-/* As in 0f12.456 */
-/* or 0d1.2345e12 */
+/* Chars that mean this number is a floating point constant
+ As in 0f12.456 or 0d1.2345e12. */
const char FLT_CHARS[] = "rRsSfFdD";
/* Byte order. */
static segT arcext_section;
/* One of bfd_mach_arc_n. */
-static int arc_mach_type = bfd_mach_arc_5;
+static int arc_mach_type = bfd_mach_arc_6;
/* Non-zero if the cpu type has been explicitly specified. */
static int mach_type_specified_p = 0;
/* Non-zero if opcode tables have been initialized.
- A .cpu command must appear before any instructions. */
+ A .option command must appear before any instructions. */
static int cpu_tables_init_p = 0;
static struct hash_control *arc_suffix_hash = NULL;
const char *md_shortopts = "";
struct option md_longopts[] = {
#define OPTION_EB (OPTION_MD_BASE + 0)
- {"EB", no_argument, NULL, OPTION_EB},
+ { "EB", no_argument, NULL, OPTION_EB },
#define OPTION_EL (OPTION_MD_BASE + 1)
- {"EL", no_argument, NULL, OPTION_EL},
+ { "EL", no_argument, NULL, OPTION_EL },
#define OPTION_ARC5 (OPTION_MD_BASE + 2)
- {"marc5", no_argument, NULL, OPTION_ARC5},
+ { "marc5", no_argument, NULL, OPTION_ARC5 },
+ { "pre-v6", no_argument, NULL, OPTION_ARC5 },
#define OPTION_ARC6 (OPTION_MD_BASE + 3)
- {"marc6", no_argument, NULL, OPTION_ARC6},
+ { "marc6", no_argument, NULL, OPTION_ARC6 },
#define OPTION_ARC7 (OPTION_MD_BASE + 4)
- {"marc7", no_argument, NULL, OPTION_ARC7},
+ { "marc7", no_argument, NULL, OPTION_ARC7 },
#define OPTION_ARC8 (OPTION_MD_BASE + 5)
- {"marc8", no_argument, NULL, OPTION_ARC8},
+ { "marc8", no_argument, NULL, OPTION_ARC8 },
#define OPTION_ARC (OPTION_MD_BASE + 6)
- {"marc", no_argument, NULL, OPTION_ARC},
+ { "marc", no_argument, NULL, OPTION_ARC },
{ NULL, no_argument, NULL, 0 }
};
size_t md_longopts_size = sizeof (md_longopts);
{
switch (c)
{
- case OPTION_ARC:
case OPTION_ARC5:
arc_mach_type = bfd_mach_arc_5;
break;
+ case OPTION_ARC:
case OPTION_ARC6:
arc_mach_type = bfd_mach_arc_6;
break;
/* This function is called once, at assembler startup time. It should
set up all the tables, etc. that the MD part of the assembler will need.
- Opcode selection is defered until later because we might see a .cpu
+ Opcode selection is deferred until later because we might see a .option
command. */
void
if (!bfd_set_arch_mach (stdoutput, bfd_arch_arc, arc_mach_type))
as_warn ("could not set architecture and machine");
- /* This call is necessary because we need to
- initialize `arc_operand_map' which may be needed before we see the
- first insn. */
+ /* This call is necessary because we need to initialize `arc_operand_map'
+ which may be needed before we see the first insn. */
arc_opcode_init_tables (arc_get_opcode_mach (arc_mach_type,
target_big_endian));
}
/* Initialize the various opcode and operand tables.
MACH is one of bfd_mach_arc_xxx. */
-
static void
init_opcode_tables (mach)
int mach;
continue;
/* Use symbol_create here instead of symbol_new so we don't try to
output registers into the object file's symbol table. */
- symbol_table_insert (symbol_create (arc_reg_names[i].name, reg_section,
- (int) &arc_reg_names[i], &zero_address_frag));
+ symbol_table_insert (symbol_create (arc_reg_names[i].name,
+ reg_section,
+ (int) &arc_reg_names[i],
+ &zero_address_frag));
}
/* Tell `.option' it's too late. */
that would screw up references to ``.''. */
struct arc_fixup {
- /* index into `arc_operands' */
+ /* index into `arc_operands' */
int opindex;
expressionS exp;
};
static int init_tables_p = 0;
/* Opcode table initialization is deferred until here because we have to
- wait for a possible .cpu command. */
+ wait for a possible .option command. */
if (!init_tables_p)
{
init_opcode_tables (arc_mach_type);
}
/* Skip leading white space. */
- while (isspace (*str))
+ while (ISSPACE (*str))
str++;
/* The instructions are stored in lists hashed by the first letter (though
}
/* Pick the suffix out and look it up via the hash table. */
- for (t = s; *t && isalnum (*t); ++t)
+ for (t = s; *t && ISALNUM (*t); ++t)
continue;
c = *t;
*t = '\0';
/* Is there anything left to parse?
We don't check for this at the top because we want to parse
any trailing fake arguments in the syntax string. */
- if (*str == '\0')
+ if (is_end_of_line[(unsigned char) *str])
break;
/* Parse the operand. */
insn and it is assumed that longer versions of insns appear
before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
- while (isspace (*str))
+ while (ISSPACE (*str))
++str;
- if (*str != '\0')
+ if (!is_end_of_line[(unsigned char) *str])
as_bad ("junk at end of line: `%s'", str);
/* Is there a limm value? */
f = frag_more (8);
md_number_to_chars (f, insn, 4);
md_number_to_chars (f + 4, limm, 4);
+ dwarf2_emit_insn (8);
}
else if (limm_reloc_p)
{
{
f = frag_more (4);
md_number_to_chars (f, insn, 4);
+ dwarf2_emit_insn (4);
}
/* Create any fixups. */
operands residing in the insn, but instead just use the
operand index. This lets us easily handle fixups for any
operand type, although that is admittedly not a very exciting
- feature. We pick a BFD reloc type in md_apply_fix.
+ feature. We pick a BFD reloc type in md_apply_fix3.
Limm values (4 byte immediate "constants") must be treated
normally because they're not part of the actual insn word
p = name;
while (*p)
{
- if (isupper (*p))
- *p = tolower (*p);
+ *p = TOLOWER (*p);
p++;
}
- /* just after name is now '\0' */
+ /* just after name is now '\0' */
p = input_line_pointer;
*p = c;
SKIP_WHITESPACE ();
return;
}
- input_line_pointer++; /* skip ',' */
+ input_line_pointer++; /* skip ',' */
number = get_absolute_expression ();
if (number < 0)
return;
}
- input_line_pointer++; /* skip ',' */
+ input_line_pointer++; /* skip ',' */
mode = input_line_pointer;
if (!strncmp (mode, "r|w", 3))
return;
}
- input_line_pointer++; /* skip ',' */
+ input_line_pointer++; /* skip ',' */
if (!strncmp (input_line_pointer, "cannot_shortcut", 15))
{
strcpy (syntax, name);
name_len = strlen (name);
- /* just after name is now '\0' */
+ /* just after name is now '\0' */
p = input_line_pointer;
*p = c;
return;
}
- input_line_pointer++; /* skip ',' */
+ input_line_pointer++; /* skip ',' */
opcode = get_absolute_expression ();
SKIP_WHITESPACE ();
return;
}
- input_line_pointer++; /* skip ',' */
+ input_line_pointer++; /* skip ',' */
subopcode = get_absolute_expression ();
if (subopcode < 0)
return;
}
- input_line_pointer++; /* skip ',' */
+ input_line_pointer++; /* skip ',' */
for (i = 0; i < (int) MAXSUFFIXCLASS; i++)
{
return;
}
- input_line_pointer++; /* skip ',' */
+ input_line_pointer++; /* skip ',' */
for (i = 0; i < (int) MAXSYNTAXCLASS; i++)
{
name = input_line_pointer;
c = get_symbol_end ();
- /* just after name is now '\0' */
+ /* just after name is now '\0' */
p = input_line_pointer;
*p = c;
SKIP_WHITESPACE ();
return;
}
- input_line_pointer++; /* skip ',' */
+ input_line_pointer++; /* skip ',' */
size = get_absolute_expression ();
if (size < 0)
old_sec = now_seg;
old_subsec = now_subseg;
record_alignment (bss_section, align);
- subseg_set (bss_section, 0); /* ??? subseg_set (bss_section, 1); ??? */
+ subseg_set (bss_section, 0); /* ??? subseg_set (bss_section, 1); ??? */
if (align)
/* Do alignment. */
char *
md_atof (type, litP, sizeP)
- char type;
+ int type;
char *litP;
int *sizeP;
{
LITTLENUM_TYPE words[MAX_LITTLENUMS];
LITTLENUM_TYPE *wordP;
char *t;
- char *atof_ieee ();
+ char * atof_ieee PARAMS ((char *, int, LITTLENUM_TYPE *));
switch (type)
{
arc_code_symbol (expressionP)
expressionS *expressionP;
{
- if (expressionP->X_op == O_symbol && expressionP->X_add_number == 0
- /* I think this test is unnecessary but just as a sanity check... */
- && expressionP->X_op_symbol == NULL)
+ if (expressionP->X_op == O_symbol && expressionP->X_add_number == 0)
{
expressionS two;
expressionP->X_op = O_right_shift;
+ expressionP->X_add_symbol->sy_value.X_op = O_constant;
two.X_op = O_constant;
two.X_add_symbol = two.X_op_symbol = NULL;
two.X_add_number = 2;
expressionP->X_op_symbol = make_expr_symbol (&two);
}
- /* Allow %st(sym1-sym2) */
+ /* Allow %st(sym1-sym2) */
else if (expressionP->X_op == O_subtract
&& expressionP->X_add_symbol != NULL
&& expressionP->X_op_symbol != NULL
arc_code_symbol (expressionP);
}
else
- { /* It could be a register. */
+ {
+ /* It could be a register. */
int i, l;
struct arc_ext_operand_value *ext_oper = arc_ext_operands;
p++;
while (ext_oper)
{
l = strlen (ext_oper->operand.name);
- if (!strncmp (p, ext_oper->operand.name, l) && !isalnum(*(p + l)))
+ if (!strncmp (p, ext_oper->operand.name, l) && !ISALNUM (*(p + l)))
{
input_line_pointer += l + 1;
expressionP->X_op = O_register;
for (i = 0; i < arc_reg_names_count; i++)
{
l = strlen (arc_reg_names[i].name);
- if (!strncmp (p, arc_reg_names[i].name, l) && !isalnum (*(p + l)))
+ if (!strncmp (p, arc_reg_names[i].name, l) && !ISALNUM (*(p + l)))
{
input_line_pointer += l + 1;
expressionP->X_op = O_register;
md_pcrel_from (fixP)
fixS *fixP;
{
- if (fixP->fx_addsy != (symbolS *) NULL
- && ! S_IS_DEFINED (fixP->fx_addsy))
- {
- /* The symbol is undefined. Let the linker figure it out. */
- return 0;
- }
-
/* Return the address of the delay slot. */
return fixP->fx_frag->fr_address + fixP->fx_where + fixP->fx_size;
}
and we attempt to completely resolve the reloc. If we can not do
that, we determine the correct reloc code and put it back in the fixup. */
-int
-md_apply_fix3 (fixP, valueP, seg)
+void
+md_apply_fix3 (fixP, valP, seg)
fixS *fixP;
- valueT *valueP;
+ valueT * valP;
segT seg;
{
#if 0
char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
#endif
- valueT value;
-
- /* FIXME FIXME FIXME: The value we are passed in *valueP includes
- the symbol values. Since we are using BFD_ASSEMBLER, if we are
- doing this relocation the code in write.c is going to call
- bfd_perform_relocation, which is also going to use the symbol
- value. That means that if the reloc is fully resolved we want to
- use *valueP since bfd_perform_relocation is not being used.
- However, if the reloc is not fully resolved we do not want to use
- *valueP, and must use fx_offset instead. However, if the reloc
- is PC relative, we do want to use *valueP since it includes the
- result of md_pcrel_from. This is confusing. */
+ valueT value = * valP;
if (fixP->fx_addsy == (symbolS *) NULL)
- {
- value = *valueP;
- fixP->fx_done = 1;
- }
+ fixP->fx_done = 1;
+
else if (fixP->fx_pcrel)
{
- value = *valueP;
- /* ELF relocations are against symbols.
- If this symbol is in a different section then we need to leave it for
- the linker to deal with. Unfortunately, md_pcrel_from can't tell,
- so we have to undo it's effects here. */
- if (S_IS_DEFINED (fixP->fx_addsy)
- && S_GET_SEGMENT (fixP->fx_addsy) != seg)
+ /* Hack around bfd_install_relocation brain damage. */
+ if (S_GET_SEGMENT (fixP->fx_addsy) != seg)
value += md_pcrel_from (fixP);
}
- else
- {
- value = fixP->fx_offset;
- if (fixP->fx_subsy != (symbolS *) NULL)
- {
- if (S_GET_SEGMENT (fixP->fx_subsy) == absolute_section)
- value -= S_GET_VALUE (fixP->fx_subsy);
- else
- {
- /* We can't actually support subtracting a symbol. */
- as_bad_where (fixP->fx_file, fixP->fx_line,
- "expression too complex");
- }
- }
- }
+
+ /* We can't actually support subtracting a symbol. */
+ if (fixP->fx_subsy != NULL)
+ as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED)
{
if (fixP->fx_done)
{
/* Nothing else to do here. */
- return 1;
+ return;
}
/* Determine a BFD reloc value based on the operand information.
as_bad_where (fixP->fx_file, fixP->fx_line,
"unresolved expression that must be resolved");
fixP->fx_done = 1;
- return 1;
+ return;
}
}
else
abort ();
}
}
-
- fixP->fx_addnumber = value;
-
- return 1;
}
/* Translate internal representation of relocation info to BFD target
assert (!fixP->fx_pcrel == !reloc->howto->pc_relative);
/* Set addend to account for PC being advanced one insn before the
- target address is computed, drop fx_addnumber as it is handled
- elsewhere mlm */
+ target address is computed. */
reloc->addend = (fixP->fx_pcrel ? -4 : 0);
projects / deliverable / binutils-gdb.git / blobdiff