/* read.c - read a source file -
Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
-This file is part of GAS, the GNU Assembler.
+ This file is part of GAS, the GNU Assembler.
-GAS is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+ GAS is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
-GAS is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ GAS is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with GAS; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
-02110-1301, USA. */
+ You should have received a copy of the GNU General Public License
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
/* If your chars aren't 8 bits, you will change this a bit (eg. to 0xFF).
But then, GNU isn't spozed to run on your machine anyway.
#include "dw2gencfi.h"
#ifndef TC_START_LABEL
-#define TC_START_LABEL(x,y) (x == ':')
+#define TC_START_LABEL(x,y,z) (x == ':')
#endif
/* Set by the object-format or the target. */
};
/* In: a character.
- Out: 1 if this character ends a line. */
+ Out: 1 if this character ends a line.
+ 2 if this character is a line separator. */
char is_end_of_line[256] = {
#ifdef CR_EOL
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */
static void s_align (int, int);
static void s_altmacro (int);
static void s_bad_end (int);
+#ifdef OBJ_ELF
+static void s_gnu_attribute (int);
+#endif
static void s_reloc (int);
static int hex_float (int, char *);
static segT get_known_segmented_expression (expressionS * expP);
static void pobegin (void);
-static int get_line_sb (sb *);
+static int get_non_macro_line_sb (sb *);
static void generate_file_debug (void);
-static char *_find_end_of_line (char *, int, int);
+static char *_find_end_of_line (char *, int, int, int);
\f
void
read_begin (void)
/* Use machine dependent syntax. */
for (p = line_separator_chars; *p; p++)
- is_end_of_line[(unsigned char) *p] = 1;
+ is_end_of_line[(unsigned char) *p] = 2;
/* Use more. FIXME-SOMEDAY. */
if (flag_mri)
{"abort", s_abort, 0},
{"align", s_align_ptwo, 0},
{"altmacro", s_altmacro, 1},
- {"ascii", stringer, 0},
- {"asciz", stringer, 1},
+ {"ascii", stringer, 8+0},
+ {"asciz", stringer, 8+1},
{"balign", s_align_bytes, 0},
{"balignw", s_align_bytes, -2},
{"balignl", s_align_bytes, -4},
{"func", s_func, 0},
{"global", s_globl, 0},
{"globl", s_globl, 0},
+#ifdef OBJ_ELF
+ {"gnu_attribute", s_gnu_attribute, 0},
+#endif
{"hword", cons, 2},
{"if", s_if, (int) O_ne},
{"ifb", s_ifb, 1},
{"stabd", s_stab, 'd'},
{"stabn", s_stab, 'n'},
{"stabs", s_stab, 's'},
- {"string", stringer, 1},
+ {"string", stringer, 8+1},
+ {"string8", stringer, 8+1},
+ {"string16", stringer, 16+1},
+ {"string32", stringer, 32+1},
+ {"string64", stringer, 64+1},
{"struct", s_struct, 0},
/* tag */
{"text", s_text, 0},
#define HANDLE_CONDITIONAL_ASSEMBLY() \
if (ignore_input ()) \
{ \
- char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \
+ char *eol = find_end_of_line (input_line_pointer, flag_m68k_mri); \
input_line_pointer = (input_line_pointer <= buffer_limit \
&& eol >= buffer_limit) \
? buffer_limit \
S points to the beginning of the symbol.
[In case of pseudo-op, s->'.'.]
Input_line_pointer->'\0' where c was. */
- if (TC_START_LABEL (c, input_line_pointer))
+ if (TC_START_LABEL (c, s, input_line_pointer))
{
if (flag_m68k_mri)
{
/* Input_line_pointer->after ':'. */
SKIP_WHITESPACE ();
}
- else if (input_line_pointer[1] == '='
- && (c == '='
- || ((c == ' ' || c == '\t')
- && input_line_pointer[2] == '=')))
+ else if ((c == '=' && input_line_pointer[1] == '=')
+ || ((c == ' ' || c == '\t')
+ && input_line_pointer[1] == '='
+ && input_line_pointer[2] == '='))
{
equals (s, -1);
demand_empty_rest_of_line ();
/* WARNING: c has char, which may be end-of-line. */
/* Also: input_line_pointer->`\0` where c was. */
*input_line_pointer = c;
- input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1);
+ input_line_pointer = _find_end_of_line (input_line_pointer, flag_m68k_mri, 1, 0);
c = *input_line_pointer;
*input_line_pointer = '\0';
(in bytes). A negative ARG is the negative of the length of the
fill pattern. BYTES_P is non-zero if the alignment value should be
interpreted as the byte boundary, rather than the power of 2. */
-
-#define ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1)
+#ifndef TC_ALIGN_LIMIT
+#define TC_ALIGN_LIMIT (stdoutput->arch_info->bits_per_address - 1)
+#endif
static void
s_align (int arg, int bytes_p)
{
- unsigned int align_limit = ALIGN_LIMIT;
+ unsigned int align_limit = TC_ALIGN_LIMIT;
unsigned int align;
char *stop = NULL;
char stopc = 0;
md_flush_pending_output ();
#endif
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
get_known_segmented_expression (&rep_exp);
if (*input_line_pointer == ',')
{
mri_comment_end (stop, stopc);
}
+#ifdef OBJ_ELF
+#define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0)
+
+static inline int
+skip_past_char (char ** str, char c)
+{
+ if (**str == c)
+ {
+ (*str)++;
+ return 0;
+ }
+ else
+ return -1;
+}
+#define skip_past_comma(str) skip_past_char (str, ',')
+
+/* Parse an attribute directive for VENDOR.
+ Returns the attribute number read, or zero on error. */
+int
+s_vendor_attribute (int vendor)
+{
+ expressionS exp;
+ int type;
+ int tag;
+ unsigned int i = 0;
+ char *s = NULL;
+
+ /* Read the first number or name. */
+ skip_whitespace (input_line_pointer);
+ s = input_line_pointer;
+ if (ISDIGIT (*input_line_pointer))
+ {
+ expression (& exp);
+ if (exp.X_op != O_constant)
+ goto bad;
+ tag = exp.X_add_number;
+ }
+ else
+ {
+ char *name;
+
+ /* A name may contain '_', but no other punctuation. */
+ for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_';
+ ++input_line_pointer)
+ i++;
+ if (i == 0)
+ goto bad;
+
+ name = alloca (i + 1);
+ memcpy (name, s, i);
+ name[i] = '\0';
+
+#ifndef CONVERT_SYMBOLIC_ATTRIBUTE
+#define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1
+#endif
+
+ tag = CONVERT_SYMBOLIC_ATTRIBUTE (name);
+ if (tag == -1)
+ {
+ as_bad (_("Attribute name not recognised: %s"), name);
+ ignore_rest_of_line ();
+ return 0;
+ }
+ }
+
+ type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag);
+
+ if (skip_past_comma (&input_line_pointer) == -1)
+ goto bad;
+ if (type & 1)
+ {
+ expression (& exp);
+ if (exp.X_op != O_constant)
+ {
+ as_bad (_("expected numeric constant"));
+ ignore_rest_of_line ();
+ return 0;
+ }
+ i = exp.X_add_number;
+ }
+ if ((type & 3) == 3
+ && skip_past_comma (&input_line_pointer) == -1)
+ {
+ as_bad (_("expected comma"));
+ ignore_rest_of_line ();
+ return 0;
+ }
+ if (type & 2)
+ {
+ int len;
+
+ skip_whitespace (input_line_pointer);
+ if (*input_line_pointer != '"')
+ goto bad_string;
+ s = demand_copy_C_string (&len);
+ }
+
+ switch (type & 3)
+ {
+ case 3:
+ bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s);
+ break;
+ case 2:
+ bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s);
+ break;
+ case 1:
+ bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i);
+ break;
+ default:
+ abort ();
+ }
+
+ demand_empty_rest_of_line ();
+ return tag;
+bad_string:
+ as_bad (_("bad string constant"));
+ ignore_rest_of_line ();
+ return 0;
+bad:
+ as_bad (_("expected <tag> , <value>"));
+ ignore_rest_of_line ();
+ return 0;
+}
+
+/* Parse a .gnu_attribute directive. */
+
+static void
+s_gnu_attribute (int ignored ATTRIBUTE_UNUSED)
+{
+ s_vendor_attribute (OBJ_ATTR_GNU);
+}
+#endif /* OBJ_ELF */
+
/* Handle the MRI IRP and IRPC pseudo-ops. */
void
sb_new (&out);
- err = expand_irp (irpc, 0, &s, &out, get_line_sb);
+ err = expand_irp (irpc, 0, &s, &out, get_non_macro_line_sb);
if (err != NULL)
as_bad_where (file, line, "%s", err);
or zero if there are no more lines. */
static int
-get_line_sb (sb *line)
+get_line_sb (sb *line, int in_macro)
{
char *eol;
return 0;
}
- eol = find_end_of_line (input_line_pointer, flag_m68k_mri);
+ eol = _find_end_of_line (input_line_pointer, flag_m68k_mri, 0, in_macro);
sb_add_buffer (line, input_line_pointer, eol - input_line_pointer);
input_line_pointer = eol;
return *input_line_pointer++;
}
+static int
+get_non_macro_line_sb (sb *line)
+{
+ return get_line_sb (line, 0);
+}
+
+static int
+get_macro_line_sb (sb *line)
+{
+ return get_line_sb (line, 1);
+}
+
/* Define a macro. This is an interface to macro.c. */
void
sb_new (&label);
sb_add_string (&label, S_GET_NAME (line_label));
- err = define_macro (0, &s, &label, get_line_sb, file, line, &name);
+ err = define_macro (0, &s, &label, get_macro_line_sb, file, line, &name);
sb_kill (&label);
}
else
- err = define_macro (0, &s, NULL, get_line_sb, file, line, &name);
+ err = define_macro (0, &s, NULL, get_macro_line_sb, file, line, &name);
if (err != NULL)
as_bad_where (file, line, err, name);
else
void
s_mexit (int ignore ATTRIBUTE_UNUSED)
{
- cond_exit_macro (macro_nest);
- buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+ if (macro_nest)
+ {
+ cond_exit_macro (macro_nest);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+ }
+ else
+ as_warn (_("ignoring macro exit outside a macro definition."));
}
/* Switch in and out of MRI mode. */
sb many;
sb_new (&one);
- if (!buffer_and_nest (start, end, &one, get_line_sb))
+ if (!buffer_and_nest (start, end, &one, get_non_macro_line_sb))
{
as_bad (_("%s without %s"), start, end);
return;
md_flush_pending_output ();
#endif
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
if (flag_mri)
stop = mri_comment_field (&stopc);
if (exp.X_op == O_constant)
{
- long repeat;
+ offsetT repeat;
repeat = exp.X_add_number;
if (mult)
char *stop = NULL;
char stopc = 0;
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
if (flag_mri)
stop = mri_comment_field (&stopc);
err = md_atof (float_type, temp, &flen);
know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
- know (flen > 0);
+ know (err != NULL || flen > 0);
if (err)
{
as_bad (_("bad floating literal: %s"), err);
{
expressionS *expP = symbol_get_value_expression (symp);
- assert (expP->X_op == O_symbol
+ gas_assert (expP->X_op == O_symbol
&& expP->X_add_number == 0);
symp = expP->X_add_symbol;
}
char *loop;
loop = concat (S_GET_NAME (symbolP),
- " => ", S_GET_NAME (symbolP2), NULL);
+ " => ", S_GET_NAME (symbolP2), (const char *) NULL);
symp = symbolP2;
while (symp != symbolP)
{
char *old_loop = loop;
symp = symbol_get_value_expression (symp)->X_add_symbol;
- loop = concat (loop, " => ", S_GET_NAME (symp), NULL);
+ loop = concat (loop, " => ", S_GET_NAME (symp),
+ (const char *) NULL);
free (old_loop);
}
break;
case O_register:
+#ifndef TC_GLOBAL_REGISTER_SYMBOL_OK
+ if (S_IS_EXTERNAL (symbolP))
+ {
+ as_bad ("can't equate global symbol `%s' with register name",
+ S_GET_NAME (symbolP));
+ return;
+ }
+#endif
S_SET_SEGMENT (symbolP, reg_section);
S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
set_zero_frag (symbolP);
if (need_pass_2)
return;
+ /* Grow the current frag now so that dot_value does not get invalidated
+ if the frag were to fill up in the frag_more() call below. */
+ frag_grow (nbytes);
dot_value = frag_now_fix ();
#ifndef NO_LISTING
&& ((get & mask) != mask
|| (get & hibit) == 0))
{ /* Leading bits contain both 0s & 1s. */
+#if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG
+#ifndef __MSVCRT__
+ as_warn (_("value 0x%llx truncated to 0x%llx"),
+ (unsigned long long) get, (unsigned long long) use);
+#else
+ as_warn (_("value 0x%I64x truncated to 0x%I64x"),
+ (unsigned long long) get, (unsigned long long) use);
+#endif
+#else
as_warn (_("value 0x%lx truncated to 0x%lx"),
(unsigned long) get, (unsigned long) use);
+#endif
}
/* Put bytes in right order. */
md_number_to_chars (p, use, (int) nbytes);
}
}
else
- {
- memset (p, 0, nbytes);
+ emit_expr_fix (exp, nbytes, frag_now, p);
+}
+
+void
+emit_expr_fix (expressionS *exp, unsigned int nbytes, fragS *frag, char *p)
+{
+ memset (p, 0, nbytes);
- /* Now we need to generate a fixS to record the symbol value. */
+ /* Generate a fixS to record the symbol value. */
#ifdef TC_CONS_FIX_NEW
- TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);
+ TC_CONS_FIX_NEW (frag, p - frag->fr_literal, nbytes, exp);
#else
- {
- bfd_reloc_code_real_type r;
+ {
+ bfd_reloc_code_real_type r;
- switch (nbytes)
- {
- case 1:
- r = BFD_RELOC_8;
- break;
- case 2:
- r = BFD_RELOC_16;
- break;
- case 4:
- r = BFD_RELOC_32;
- break;
- case 8:
- r = BFD_RELOC_64;
- break;
- default:
- as_bad (_("unsupported BFD relocation size %u"), nbytes);
- r = BFD_RELOC_32;
- break;
- }
- fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp,
- 0, r);
+ switch (nbytes)
+ {
+ case 1:
+ r = BFD_RELOC_8;
+ break;
+ case 2:
+ r = BFD_RELOC_16;
+ break;
+ case 3:
+ r = BFD_RELOC_24;
+ break;
+ case 4:
+ r = BFD_RELOC_32;
+ break;
+ case 8:
+ r = BFD_RELOC_64;
+ break;
+ default:
+ as_bad (_("unsupported BFD relocation size %u"), nbytes);
+ r = BFD_RELOC_32;
+ break;
}
+ fix_new_exp (frag, p - frag->fr_literal, (int) nbytes, exp,
+ 0, r);
+ }
#endif
- }
}
\f
#ifdef BITFIELD_CONS_EXPRESSIONS
md_flush_pending_output ();
#endif
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
do
{
/* input_line_pointer->1st char of a flonum (we hope!). */
{
err = md_atof (float_type, temp, &length);
know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
- know (length > 0);
+ know (err != NULL || length > 0);
if (err)
{
as_bad (_("bad floating literal: %s"), err);
demand_empty_rest_of_line ();
}
\f
-/* We read 0 or more ',' separated, double-quoted strings.
+static void
+stringer_append_char (int c, int bitsize)
+{
+ if (!target_big_endian)
+ FRAG_APPEND_1_CHAR (c);
+
+ switch (bitsize)
+ {
+ case 64:
+ FRAG_APPEND_1_CHAR (0);
+ FRAG_APPEND_1_CHAR (0);
+ FRAG_APPEND_1_CHAR (0);
+ FRAG_APPEND_1_CHAR (0);
+ /* Fall through. */
+ case 32:
+ FRAG_APPEND_1_CHAR (0);
+ FRAG_APPEND_1_CHAR (0);
+ /* Fall through. */
+ case 16:
+ FRAG_APPEND_1_CHAR (0);
+ /* Fall through. */
+ case 8:
+ break;
+ default:
+ /* Called with invalid bitsize argument. */
+ abort ();
+ break;
+ }
+ if (target_big_endian)
+ FRAG_APPEND_1_CHAR (c);
+}
+
+/* Worker to do .ascii etc statements.
+ Reads 0 or more ',' separated, double-quoted strings.
Caller should have checked need_pass_2 is FALSE because we don't
- check it. */
+ check it.
+ Checks for end-of-line.
+ BITS_APPENDZERO says how many bits are in a target char.
+ The bottom bit is set if a NUL char should be appended to the strings. */
void
-stringer (/* Worker to do .ascii etc statements. */
- /* Checks end-of-line. */
- register int append_zero /* 0: don't append '\0', else 1. */)
+stringer (int bits_appendzero)
{
- register unsigned int c;
+ const int bitsize = bits_appendzero & ~7;
+ const int append_zero = bits_appendzero & 1;
+ unsigned int c;
char *start;
#ifdef md_flush_pending_output
md_flush_pending_output ();
#endif
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
/* The following awkward logic is to parse ZERO or more strings,
comma separated. Recall a string expression includes spaces
before the opening '\"' and spaces after the closing '\"'.
case '\"':
++input_line_pointer; /*->1st char of string. */
start = input_line_pointer;
+
while (is_a_char (c = next_char_of_string ()))
- {
- FRAG_APPEND_1_CHAR (c);
- }
+ stringer_append_char (c, bitsize);
+
if (append_zero)
- {
- FRAG_APPEND_1_CHAR (0);
- }
+ stringer_append_char (0, bitsize);
+
know (input_line_pointer[-1] == '\"');
#ifndef NO_LISTING
case '<':
input_line_pointer++;
c = get_single_number ();
- FRAG_APPEND_1_CHAR (c);
+ stringer_append_char (c, bitsize);
if (*input_line_pointer != '>')
- {
- as_bad (_("expected <nn>"));
- }
+ as_bad (_("expected <nn>"));
+
input_line_pointer++;
break;
case ',':
}
demand_empty_rest_of_line ();
-} /* stringer() */
+}
\f
/* FIXME-SOMEDAY: I had trouble here on characters with the
high bits set. We'll probably also have trouble with
md_flush_pending_output ();
#endif
+#ifdef md_cons_align
+ md_cons_align (1);
+#endif
+
SKIP_WHITESPACE ();
filename = demand_copy_string (& len);
if (filename == NULL)
if (*input_line_pointer != ',')
{
if (default_prefix)
- asprintf (&label, "%s%s", default_prefix, name);
+ {
+ if (asprintf (&label, "%s%s", default_prefix, name) == -1)
+ as_fatal ("%s", xstrerror (errno));
+ }
else
{
char leading_char = bfd_get_symbol_leading_char (stdoutput);
/* Missing entry point, use function's name with the leading
char prepended. */
if (leading_char)
- asprintf (&label, "%c%s", leading_char, name);
+ {
+ if (asprintf (&label, "%c%s", leading_char, name) == -1)
+ as_fatal ("%s", xstrerror (errno));
+ }
else
label = name;
}
#endif
static char *
-_find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED)
+_find_end_of_line (char *s, int mri_string, int insn ATTRIBUTE_UNUSED,
+ int in_macro)
{
char inquote = '\0';
int inescape = 0;
#ifdef TC_EOL_IN_INSN
|| (insn && TC_EOL_IN_INSN (s))
#endif
+ /* PR 6926: When we are parsing the body of a macro the sequence
+ \@ is special - it refers to the invocation count. If the @
+ character happens to be registered as a line-separator character
+ by the target, then the is_end_of_line[] test above will have
+ returned true, but we need to ignore the line separating
+ semantics in this particular case. */
+ || (in_macro && inescape && *s == '@')
)
{
if (mri_string && *s == '\'')
char *
find_end_of_line (char *s, int mri_string)
{
- return _find_end_of_line (s, mri_string, 0);
+ return _find_end_of_line (s, mri_string, 0, 0);
}
projects / deliverable / binutils-gdb.git / blobdiff