/* read.c - read a source file -
- Copyright (C) 1986, 1987, 1990, 1991 Free Software Foundation, Inc.
-
- 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 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#define MASK_CHAR (0xFF) /* If your chars aren't 8 bits, you will
- change this a bit. But then, GNU isn't
- spozed to run on your machine anyway.
- (RMS is so shortsighted sometimes.)
- */
+ Copyright 1986, 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
-#define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16)
-/* This is the largest known floating point */
-/* format (for now). It will grow when we */
-/* do 4361 style flonums. */
+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.
-/* Routines that read assembler source text to build spagetti in memory. */
-/* Another group of these functions is in the as-expr.c module */
+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.
-#include "as.h"
+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, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+#if 0
+/* If your chars aren't 8 bits, you will change this a bit.
+ But then, GNU isn't spozed to run on your machine anyway.
+ (RMS is so shortsighted sometimes.) */
+#define MASK_CHAR (0xFF)
+#else
+#define MASK_CHAR ((int)(unsigned char) -1)
+#endif
+
+/* This is the largest known floating point format (for now). It will
+ grow when we do 4361 style flonums. */
+#define MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT (16)
+
+/* Routines that read assembler source text to build spagetti in memory.
+ Another group of these functions is in the expr.c module. */
+#include "as.h"
+#include "safe-ctype.h"
+#include "subsegs.h"
+#include "sb.h"
+#include "macro.h"
#include "obstack.h"
#include "listing.h"
-char *input_line_pointer; /*->next char of source file to parse. */
+#include "ecoff.h"
+#include "dw2gencfi.h"
+
+#ifndef TC_START_LABEL
+#define TC_START_LABEL(x,y) (x == ':')
+#endif
+
+/* Set by the object-format or the target. */
+#ifndef TC_IMPLICIT_LCOMM_ALIGNMENT
+#define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) \
+ do \
+ { \
+ if ((SIZE) >= 8) \
+ (P2VAR) = 3; \
+ else if ((SIZE) >= 4) \
+ (P2VAR) = 2; \
+ else if ((SIZE) >= 2) \
+ (P2VAR) = 1; \
+ else \
+ (P2VAR) = 0; \
+ } \
+ while (0)
+#endif
+char *input_line_pointer; /*->next char of source file to parse. */
#if BITS_PER_CHAR != 8
-The following table is indexed by [ (char) ] and will break if
- a char does not have exactly 256 states (hopefully 0:255!) !
-#endif
-
- const char /* used by is_... macros. our ctype[] */
- lex_type [256] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */
- 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */
- 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 3, /* PQRSTUVWXYZ[\]^_ */
- 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 0, 0, 0, 0, /* pqrstuvwxyz{|}~. */
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
- };
-
-
-/*
- * In: a character.
- * Out: 1 if this character ends a line.
- */
-#define _ (0)
-char is_end_of_line [256] = {
+/* The following table is indexed by[(char)] and will break if
+ a char does not have exactly 256 states (hopefully 0:255!)! */
+die horribly;
+#endif
+
+#ifndef LEX_AT
+/* The m88k unfortunately uses @ as a label beginner. */
+#define LEX_AT 0
+#endif
+
+#ifndef LEX_BR
+/* The RS/6000 assembler uses {,},[,] as parts of symbol names. */
+#define LEX_BR 0
+#endif
+
+#ifndef LEX_PCT
+/* The Delta 68k assembler permits % inside label names. */
+#define LEX_PCT 0
+#endif
+
+#ifndef LEX_QM
+/* The PowerPC Windows NT assemblers permits ? inside label names. */
+#define LEX_QM 0
+#endif
+
+#ifndef LEX_HASH
+/* The IA-64 assembler uses # as a suffix designating a symbol. We include
+ it in the symbol and strip it out in tc_canonicalize_symbol_name. */
+#define LEX_HASH 0
+#endif
+
+#ifndef LEX_DOLLAR
+/* The a29k assembler does not permits labels to start with $. */
+#define LEX_DOLLAR 3
+#endif
+
+#ifndef LEX_TILDE
+/* The Delta 68k assembler permits ~ at start of label names. */
+#define LEX_TILDE 0
+#endif
+
+/* Used by is_... macros. our ctype[]. */
+char lex_type[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* @ABCDEFGHIJKLMNO */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* PQRSTUVWXYZ[\]^_ */
+ 0, 0, 0, LEX_HASH, LEX_DOLLAR, LEX_PCT, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, /* _!"#$%&'()*+,-./ */
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, LEX_QM, /* 0123456789:;<=>? */
+ LEX_AT, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* @ABCDEFGHIJKLMNO */
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, 0, 3, /* PQRSTUVWXYZ[\]^_ */
+ 0, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* `abcdefghijklmno */
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, LEX_BR, 0, LEX_BR, LEX_TILDE, 0, /* pqrstuvwxyz{|}~. */
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
+};
+
+/* In: a character.
+ Out: 1 if this character ends a line. */
+char is_end_of_line[256] = {
#ifdef CR_EOL
- _, _, _, _, _, _, _, _, _, _,99, _, _, 99, _, _,/* @abcdefghijklmno */
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, /* @abcdefghijklmno */
#else
- _, _, _, _, _, _, _, _, _, _,99, _, _, _, _, _, /* @abcdefghijklmno */
-#endif
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _,99, _, _, _, _, /* 0123456789:;<=>? */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, /* */
- _, _, _, _, _, _, _, _, _, _, _, _, _, _, _, _ /* */
- };
-#undef _
-
-/* Functions private to this file. */
-
-char line_comment_chars[1];
-char line_separator_chars[1];
-
-static char *buffer; /* 1st char of each buffer of lines is here. */
-static char *buffer_limit; /*->1 + last char in buffer. */
-
-static char *bignum_low; /* Lowest char of bignum. */
-static char *bignum_limit; /* 1st illegal address of bignum. */
-static char *bignum_high; /* Highest char of bignum. */
-/* May point to (bignum_start-1). */
-/* Never >= bignum_limit. */
-static char *old_buffer = 0; /* JF a hack */
-static char *old_input;
-static char *old_limit;
-
-/* Variables for handling include file directory list. */
-
-char **include_dirs; /* List of pointers to directories to
- search for .include's */
-int include_dir_count; /* How many are in the list */
-int include_dir_maxlen = 1; /* Length of longest in list */
+ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* @abcdefghijklmno */
+#endif
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* _!"#$%&'()*+,-./ */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0123456789:;<=>? */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 /* */
+};
+
+#ifdef IGNORE_OPCODE_CASE
+char original_case_string[128];
+#endif
+
+/* Functions private to this file. */
+
+static char *buffer; /* 1st char of each buffer of lines is here. */
+static char *buffer_limit; /*->1 + last char in buffer. */
+
+/* TARGET_BYTES_BIG_ENDIAN is required to be defined to either 0 or 1
+ in the tc-<CPU>.h file. See the "Porting GAS" section of the
+ internals manual. */
+int target_big_endian = TARGET_BYTES_BIG_ENDIAN;
+
+/* Variables for handling include file directory table. */
+
+/* Table of pointers to directories to search for .include's. */
+char **include_dirs;
+
+/* How many are in the table. */
+int include_dir_count;
+
+/* Length of longest in table. */
+int include_dir_maxlen = 1;
#ifndef WORKING_DOT_WORD
struct broken_word *broken_words;
-int new_broken_words = 0;
+int new_broken_words;
#endif
-#ifdef __STDC__
+/* The current offset into the absolute section. We don't try to
+ build frags in the absolute section, since no data can be stored
+ there. We just keep track of the current offset. */
+addressT abs_section_offset;
-static char *demand_copy_string(int *lenP);
-int is_it_end_of_statement(void);
-unsigned int next_char_of_string(void);
-static segT get_known_segmented_expression(expressionS *expP);
-static void grow_bignum(void);
-static void pobegin(void);
-void stringer(int append_zero);
+/* If this line had an MRI style label, it is stored in this variable.
+ This is used by some of the MRI pseudo-ops. */
+symbolS *line_label;
-#else /* __STDC__ */
+/* This global variable is used to support MRI common sections. We
+ translate such sections into a common symbol. This variable is
+ non-NULL when we are in an MRI common section. */
+symbolS *mri_common_symbol;
-static char *demand_copy_string();
-int is_it_end_of_statement();
-unsigned int next_char_of_string();
-static segT get_known_segmented_expression();
-static void grow_bignum();
-static void pobegin();
-void stringer();
+/* In MRI mode, after a dc.b pseudo-op with an odd number of bytes, we
+ need to align to an even byte boundary unless the next pseudo-op is
+ dc.b, ds.b, or dcb.b. This variable is set to 1 if an alignment
+ may be needed. */
+static int mri_pending_align;
-#endif /* __STDC__ */
-
-extern int listing;
+#ifndef NO_LISTING
+#ifdef OBJ_ELF
+/* This variable is set to be non-zero if the next string we see might
+ be the name of the source file in DWARF debugging information. See
+ the comment in emit_expr for the format we look for. */
+static int dwarf_file_string;
+#endif
+#endif
+static void cons_worker PARAMS ((int, int));
+static int scrub_from_string PARAMS ((char *, int));
+static void do_align PARAMS ((int, char *, int, int));
+static void s_align PARAMS ((int, int));
+static void s_lcomm_internal PARAMS ((int, int));
+static int hex_float PARAMS ((int, char *));
+static inline int sizeof_sleb128 PARAMS ((offsetT));
+static inline int sizeof_uleb128 PARAMS ((valueT));
+static inline int output_sleb128 PARAMS ((char *, offsetT));
+static inline int output_uleb128 PARAMS ((char *, valueT));
+static inline int output_big_sleb128 PARAMS ((char *, LITTLENUM_TYPE *, int));
+static inline int output_big_uleb128 PARAMS ((char *, LITTLENUM_TYPE *, int));
+static int output_big_leb128 PARAMS ((char *, LITTLENUM_TYPE *, int, int));
+static void do_org PARAMS ((segT, expressionS *, int));
+char *demand_copy_string PARAMS ((int *lenP));
+static segT get_segmented_expression PARAMS ((expressionS *expP));
+static segT get_known_segmented_expression PARAMS ((expressionS * expP));
+static void pobegin PARAMS ((void));
+static int get_line_sb PARAMS ((sb *));
+static void generate_file_debug PARAMS ((void));
\f
void
- read_begin()
-{
- char *p;
-
- pobegin();
- obj_read_begin_hook();
-
- obstack_begin(¬es, 5000);
- obstack_begin(&cond_obstack, 960);
-
-#define BIGNUM_BEGIN_SIZE (16)
- bignum_low = xmalloc((long)BIGNUM_BEGIN_SIZE);
- bignum_limit = bignum_low + BIGNUM_BEGIN_SIZE;
-
- /* Use machine dependent syntax */
- for (p = line_separator_chars; *p; p++)
- is_end_of_line[*p] = 1;
- /* Use more. FIXME-SOMEDAY. */
+read_begin ()
+{
+ const char *p;
+
+ pobegin ();
+ obj_read_begin_hook ();
+
+ /* Something close -- but not too close -- to a multiple of 1024.
+ The debugging malloc I'm using has 24 bytes of overhead. */
+ obstack_begin (¬es, chunksize);
+ obstack_begin (&cond_obstack, chunksize);
+
+ /* Use machine dependent syntax. */
+ for (p = line_separator_chars; *p; p++)
+ is_end_of_line[(unsigned char) *p] = 1;
+ /* Use more. FIXME-SOMEDAY. */
+
+ if (flag_mri)
+ lex_type['?'] = 3;
}
\f
-/* set up pseudo-op tables */
-
-struct hash_control *
- po_hash = NULL; /* use before set up: NULL->address error */
-
-#ifdef DONTDEF
-void s_gdbline(), s_gdblinetab();
-void s_gdbbeg(), s_gdbblock(), s_gdbend(), s_gdbsym();
-#endif
-
-static const pseudo_typeS
- potable[] =
-{
- { "abort", s_abort, 0 },
- { "align", s_align_ptwo, 0 },
- { "ascii", stringer, 0 },
- { "asciz", stringer, 1 },
- /* block */
- { "byte", cons, 1 },
- { "comm", s_comm, 0 },
- { "data", s_data, 0 },
- /* dim */
- { "double", float_cons, 'd' },
- /* dsect */
- { "eject", listing_eject, 0 }, /* Formfeed listing */
- { "else", s_else, 0 },
- { "end", s_end, 0 },
- { "endif", s_endif, 0 },
- /* endef */
- { "equ", s_set, 0 },
- /* err */
- /* extend */
- { "extern", s_ignore, 0 }, /* We treat all undef as ext */
- { "app-file", s_app_file, 0 },
- { "file", s_app_file, 0 },
- { "fill", s_fill, 0 },
- { "float", float_cons, 'f' },
-#ifdef DONTDEF
- { "gdbbeg", s_gdbbeg, 0 },
- { "gdbblock", s_gdbblock, 0 },
- { "gdbend", s_gdbend, 0 },
- { "gdbsym", s_gdbsym, 0 },
- { "gdbline", s_gdbline, 0 },
- { "gdblinetab",s_gdblinetab, 0 },
-#endif
- { "global", s_globl, 0 },
- { "globl", s_globl, 0 },
- { "hword", cons, 2 },
- { "if", s_if, 0 },
- { "ifdef", s_ifdef, 0 },
- { "ifeqs", s_ifeqs, 0 },
- { "ifndef", s_ifdef, 1 },
- { "ifnes", s_ifeqs, 1 },
- { "ifnotdef", s_ifdef, 1 },
- { "include", s_include, 0 },
- { "int", cons, 4 },
- { "lcomm", s_lcomm, 0 },
- { "lflags", listing_flags, 0 }, /* Listing flags */
- { "list", listing_list, 1 }, /* Turn listing on */
- { "long", cons, 4 },
- { "lsym", s_lsym, 0 },
- { "nolist", listing_list, 0 }, /* Turn listing off */
- { "octa", big_cons, 16 },
- { "org", s_org, 0 },
- { "psize", listing_psize, 0 }, /* set paper size */
- /* print */
- { "quad", big_cons, 8 },
- { "sbttl", listing_title, 1 }, /* Subtitle of listing */
- /* scl */
- /* sect */
- { "set", s_set, 0 },
- { "short", cons, 2 },
- { "single", float_cons, 'f' },
- /* size */
- { "space", s_space, 0 },
- /* tag */
- { "text", s_text, 0 },
- { "title", listing_title, 0 }, /* Listing title */
- /* type */
- /* use */
- /* val */
- { "word", cons, 2 },
- { NULL} /* end sentinel */
+/* Set up pseudo-op tables. */
+
+static struct hash_control *po_hash;
+
+static const pseudo_typeS potable[] = {
+ {"abort", s_abort, 0},
+ {"align", s_align_ptwo, 0},
+ {"ascii", stringer, 0},
+ {"asciz", stringer, 1},
+ {"balign", s_align_bytes, 0},
+ {"balignw", s_align_bytes, -2},
+ {"balignl", s_align_bytes, -4},
+/* block */
+ {"byte", cons, 1},
+ {"comm", s_comm, 0},
+ {"common", s_mri_common, 0},
+ {"common.s", s_mri_common, 1},
+ {"data", s_data, 0},
+ {"dc", cons, 2},
+ {"dc.b", cons, 1},
+ {"dc.d", float_cons, 'd'},
+ {"dc.l", cons, 4},
+ {"dc.s", float_cons, 'f'},
+ {"dc.w", cons, 2},
+ {"dc.x", float_cons, 'x'},
+ {"dcb", s_space, 2},
+ {"dcb.b", s_space, 1},
+ {"dcb.d", s_float_space, 'd'},
+ {"dcb.l", s_space, 4},
+ {"dcb.s", s_float_space, 'f'},
+ {"dcb.w", s_space, 2},
+ {"dcb.x", s_float_space, 'x'},
+ {"ds", s_space, 2},
+ {"ds.b", s_space, 1},
+ {"ds.d", s_space, 8},
+ {"ds.l", s_space, 4},
+ {"ds.p", s_space, 12},
+ {"ds.s", s_space, 4},
+ {"ds.w", s_space, 2},
+ {"ds.x", s_space, 12},
+ {"debug", s_ignore, 0},
+#ifdef S_SET_DESC
+ {"desc", s_desc, 0},
+#endif
+/* dim */
+ {"double", float_cons, 'd'},
+/* dsect */
+ {"eject", listing_eject, 0}, /* Formfeed listing. */
+ {"else", s_else, 0},
+ {"elsec", s_else, 0},
+ {"elseif", s_elseif, (int) O_ne},
+ {"end", s_end, 0},
+ {"endc", s_endif, 0},
+ {"endfunc", s_func, 1},
+ {"endif", s_endif, 0},
+ {"endr", s_bad_endr, 0},
+/* endef */
+ {"equ", s_set, 0},
+ {"equiv", s_set, 1},
+ {"err", s_err, 0},
+ {"exitm", s_mexit, 0},
+/* extend */
+ {"extern", s_ignore, 0}, /* We treat all undef as ext. */
+ {"appfile", s_app_file, 1},
+ {"appline", s_app_line, 0},
+ {"fail", s_fail, 0},
+ {"file", s_app_file, 0},
+ {"fill", s_fill, 0},
+ {"float", float_cons, 'f'},
+ {"format", s_ignore, 0},
+ {"func", s_func, 0},
+ {"global", s_globl, 0},
+ {"globl", s_globl, 0},
+ {"hword", cons, 2},
+ {"if", s_if, (int) O_ne},
+ {"ifc", s_ifc, 0},
+ {"ifdef", s_ifdef, 0},
+ {"ifeq", s_if, (int) O_eq},
+ {"ifeqs", s_ifeqs, 0},
+ {"ifge", s_if, (int) O_ge},
+ {"ifgt", s_if, (int) O_gt},
+ {"ifle", s_if, (int) O_le},
+ {"iflt", s_if, (int) O_lt},
+ {"ifnc", s_ifc, 1},
+ {"ifndef", s_ifdef, 1},
+ {"ifne", s_if, (int) O_ne},
+ {"ifnes", s_ifeqs, 1},
+ {"ifnotdef", s_ifdef, 1},
+ {"incbin", s_incbin, 0},
+ {"include", s_include, 0},
+ {"int", cons, 4},
+ {"irp", s_irp, 0},
+ {"irep", s_irp, 0},
+ {"irpc", s_irp, 1},
+ {"irepc", s_irp, 1},
+ {"lcomm", s_lcomm, 0},
+ {"lflags", listing_flags, 0}, /* Listing flags. */
+ {"linkonce", s_linkonce, 0},
+ {"list", listing_list, 1}, /* Turn listing on. */
+ {"llen", listing_psize, 1},
+ {"long", cons, 4},
+ {"lsym", s_lsym, 0},
+ {"macro", s_macro, 0},
+ {"mexit", s_mexit, 0},
+ {"mri", s_mri, 0},
+ {".mri", s_mri, 0}, /* Special case so .mri works in MRI mode. */
+ {"name", s_ignore, 0},
+ {"noformat", s_ignore, 0},
+ {"nolist", listing_list, 0}, /* Turn listing off. */
+ {"nopage", listing_nopage, 0},
+ {"octa", cons, 16},
+ {"offset", s_struct, 0},
+ {"org", s_org, 0},
+ {"p2align", s_align_ptwo, 0},
+ {"p2alignw", s_align_ptwo, -2},
+ {"p2alignl", s_align_ptwo, -4},
+ {"page", listing_eject, 0},
+ {"plen", listing_psize, 0},
+ {"print", s_print, 0},
+ {"psize", listing_psize, 0}, /* Set paper size. */
+ {"purgem", s_purgem, 0},
+ {"quad", cons, 8},
+ {"rep", s_rept, 0},
+ {"rept", s_rept, 0},
+ {"rva", s_rva, 4},
+ {"sbttl", listing_title, 1}, /* Subtitle of listing. */
+/* scl */
+/* sect */
+ {"set", s_set, 0},
+ {"short", cons, 2},
+ {"single", float_cons, 'f'},
+/* size */
+ {"space", s_space, 0},
+ {"skip", s_space, 0},
+ {"sleb128", s_leb128, 1},
+ {"spc", s_ignore, 0},
+ {"stabd", s_stab, 'd'},
+ {"stabn", s_stab, 'n'},
+ {"stabs", s_stab, 's'},
+ {"string", stringer, 1},
+ {"struct", s_struct, 0},
+/* tag */
+ {"text", s_text, 0},
+
+ /* This is for gcc to use. It's only just been added (2/94), so gcc
+ won't be able to use it for a while -- probably a year or more.
+ But once this has been released, check with gcc maintainers
+ before deleting it or even changing the spelling. */
+ {"this_GCC_requires_the_GNU_assembler", s_ignore, 0},
+ /* If we're folding case -- done for some targets, not necessarily
+ all -- the above string in an input file will be converted to
+ this one. Match it either way... */
+ {"this_gcc_requires_the_gnu_assembler", s_ignore, 0},
+
+ {"title", listing_title, 0}, /* Listing title. */
+ {"ttl", listing_title, 0},
+/* type */
+ {"uleb128", s_leb128, 0},
+/* use */
+/* val */
+ {"xcom", s_comm, 0},
+ {"xdef", s_globl, 0},
+ {"xref", s_ignore, 0},
+ {"xstabs", s_xstab, 's'},
+ {"word", cons, 2},
+ {"zero", s_space, 0},
+ {NULL, NULL, 0} /* End sentinel. */
};
-static void pobegin() {
- char *errtxt; /* error text */
- const pseudo_typeS * pop;
-
- po_hash = hash_new();
-
- /* Do the target-specific pseudo ops. */
- for (pop = md_pseudo_table; pop->poc_name; pop++) {
- errtxt = hash_insert(po_hash, pop->poc_name, (char *)pop);
- if (errtxt && *errtxt) {
- as_fatal("error constructing md pseudo-op table");
- } /* on error */
- } /* for each op */
-
- /* Now object specific. Skip any that were in the target table. */
- for (pop=obj_pseudo_table; pop->poc_name; pop++) {
- errtxt = hash_insert (po_hash, pop->poc_name, (char *)pop);
- if (errtxt && *errtxt) {
- if (!strcmp (errtxt, "exists")) {
-#ifdef DIE_ON_OVERRIDES
- as_fatal("pseudo op \".%s\" overridden.\n", pop->poc_name);
-#endif /* DIE_ON_OVERRIDES */
- continue; /* OK if target table overrides. */
- } else {
- as_fatal("error constructing obj pseudo-op table");
- } /* if overridden */
- } /* on error */
- } /* for each op */
-
- /* Now portable ones. Skip any that we've seen already. */
- for (pop=potable; pop->poc_name; pop++) {
- errtxt = hash_insert (po_hash, pop->poc_name, (char *)pop);
- if (errtxt && *errtxt) {
- if (!strcmp (errtxt, "exists")) {
-#ifdef DIE_ON_OVERRIDES
- as_fatal("pseudo op \".%s\" overridden.\n", pop->poc_name);
-#endif /* DIE_ON_OVERRIDES */
- continue; /* OK if target table overrides. */
- } else {
- as_fatal("error constructing obj pseudo-op table");
- } /* if overridden */
- } /* on error */
- } /* for each op */
-
- return;
-} /* pobegin() */
-\f
-#define HANDLE_CONDITIONAL_ASSEMBLY() \
- if (ignore_input ()) \
-{ \
- while (! is_end_of_line[*input_line_pointer++]) \
- if (input_line_pointer == buffer_limit) \
- break; \
- continue; \
- }
-
-
-/* read_a_source_file()
- *
- * We read the file, putting things into a web that
- * represents what we have been reading.
- */
-void read_a_source_file(name)
-char *name;
-{
- register char c;
- register char * s; /* string of symbol, '\0' appended */
- register int temp;
- /* register struct frag * fragP; JF unused */ /* a frag we just made */
- pseudo_typeS *pop;
-#ifdef DONTDEF
- void gdb_block_beg();
- void gdb_block_position();
- void gdb_block_end();
- void gdb_symbols_fixup();
-#endif
-
- buffer = input_scrub_new_file(name);
-
- listing_file(name);
- listing_newline("");
-
- while ((buffer_limit = input_scrub_next_buffer(&input_line_pointer)) != 0) { /* We have another line to parse. */
- know(buffer_limit[-1] == '\n'); /* Must have a sentinel. */
- contin: /* JF this goto is my fault I admit it. Someone brave please re-write
- the whole input section here? Pleeze??? */
- while (input_line_pointer < buffer_limit) { /* We have more of this buffer to parse. */
-
- /*
- * We now have input_line_pointer->1st char of next line.
- * If input_line_pointer [-1] == '\n' then we just
- * scanned another line: so bump line counters.
- */
- if (input_line_pointer[-1] == '\n') {
- bump_line_counters();
- } /* just passed a newline */
-
-
-
- /*
- * We are at the begining of a line, or similar place.
- * We expect a well-formed assembler statement.
- * A "symbol-name:" is a statement.
- *
- * Depending on what compiler is used, the order of these tests
- * may vary to catch most common case 1st.
- * Each test is independent of all other tests at the (top) level.
- * PLEASE make a compiler that doesn't use this assembler.
- * It is crufty to waste a compiler's time encoding things for this
- * assembler, which then wastes more time decoding it.
- * (And communicating via (linear) files is silly!
- * If you must pass stuff, please pass a tree!)
- */
- if ((c = *input_line_pointer++) == '\t' || c == ' ' || c=='\f' || c == 0) {
- c = *input_line_pointer++;
- }
- know(c != ' '); /* No further leading whitespace. */
- LISTING_NEWLINE();
- /*
- * C is the 1st significant character.
- * Input_line_pointer points after that character.
- */
- if (is_name_beginner(c)) { /* want user-defined label or pseudo/opcode */
- HANDLE_CONDITIONAL_ASSEMBLY();
-
- s = --input_line_pointer;
- c = get_symbol_end(); /* name's delimiter */
- /*
- * C is character after symbol.
- * That character's place in the input line is now '\0'.
- * S points to the beginning of the symbol.
- * [In case of pseudo-op, s->'.'.]
- * Input_line_pointer->'\0' where c was.
- */
- if (c == ':') {
- colon(s); /* user-defined label */
- * input_line_pointer ++ = ':'; /* Put ':' back for error messages' sake. */
- /* Input_line_pointer->after ':'. */
- SKIP_WHITESPACE();
-
-
- } else if (c == '=' || input_line_pointer[1] == '=') { /* JF deal with FOO=BAR */
- equals(s);
- demand_empty_rest_of_line();
- } else { /* expect pseudo-op or machine instruction */
- if (*s == '.') {
- /*
- * PSEUDO - OP.
- *
- * WARNING: c has next char, which may be end-of-line.
- * We lookup the pseudo-op table with s+1 because we
- * already know that the pseudo-op begins with a '.'.
- */
-
- pop = (pseudo_typeS *) hash_find(po_hash, s+1);
-
- /* Print the error msg now, while we still can */
- if (!pop) {
- as_bad("Unknown pseudo-op: `%s'",s);
- *input_line_pointer = c;
- s_ignore(0);
- break;
- }
-
- /* Put it back for error messages etc. */
- *input_line_pointer = c;
- /* The following skip of whitespace is compulsory. */
- /* A well shaped space is sometimes all that separates keyword from operands. */
- if (c == ' ' || c == '\t') {
- input_line_pointer++;
- } /* Skip seperator after keyword. */
- /*
- * Input_line is restored.
- * Input_line_pointer->1st non-blank char
- * after pseudo-operation.
- */
- if (!pop) {
- ignore_rest_of_line();
- break;
- } else {
- (*pop->poc_handler)(pop->poc_val);
- } /* if we have one */
- } else { /* machine instruction */
- /* WARNING: c has char, which may be end-of-line. */
- /* Also: input_line_pointer->`\0` where c was. */
- * input_line_pointer = c;
- while (!is_end_of_line[*input_line_pointer]) {
- input_line_pointer++;
- }
- c = *input_line_pointer;
- *input_line_pointer = '\0';
- md_assemble(s); /* Assemble 1 instruction. */
- *input_line_pointer++ = c;
- /* We resume loop AFTER the end-of-line from this instruction */
- } /* if (*s=='.') */
-
- } /* if c==':' */
- continue;
- } /* if (is_name_beginner(c) */
-
-
- if (is_end_of_line [c]) {
- continue;
- } /* empty statement */
-
-
- if (isdigit(c)) { /* local label ("4:") */
- HANDLE_CONDITIONAL_ASSEMBLY ();
-
- temp = c - '0';
-#ifdef LOCAL_LABELS_DOLLAR
- if (*input_line_pointer=='$')
- input_line_pointer++;
-#endif
- if (* input_line_pointer ++ == ':')
- {
- local_colon (temp);
- }
- else
- {
- as_bad("Spurious digit %d.", temp);
- input_line_pointer -- ;
- ignore_rest_of_line();
- }
- continue;
- } /* local label ("4:") */
-
- if (c && strchr(line_comment_chars,c)) { /* Its a comment. Better say APP or NO_APP */
- char *ends;
- char *new_buf;
- char *new_tmp;
- int new_length;
- char *tmp_buf = 0;
- extern char *scrub_string,*scrub_last_string;
-
- bump_line_counters();
- s=input_line_pointer;
- if (strncmp(s,"APP\n",4))
- continue; /* We ignore it */
- s+=4;
-
- ends=strstr(s,"#NO_APP\n");
-
- if (!ends) {
- int tmp_len;
- int num;
-
- /* The end of the #APP wasn't in this buffer. We
- keep reading in buffers until we find the #NO_APP
- that goes with this #APP There is one. The specs
- guarentee it. . . */
- tmp_len=buffer_limit-s;
- tmp_buf=xmalloc(tmp_len);
- bcopy(s,tmp_buf,tmp_len);
- do {
- new_tmp = input_scrub_next_buffer(&buffer);
- if (!new_tmp)
- break;
- else
- buffer_limit = new_tmp;
- input_line_pointer = buffer;
- ends = strstr(buffer,"#NO_APP\n");
- if (ends)
- num=ends-buffer;
- else
- num=buffer_limit-buffer;
-
- tmp_buf = xrealloc(tmp_buf, tmp_len + num);
- bcopy(buffer,tmp_buf+tmp_len,num);
- tmp_len+=num;
- } while(!ends);
-
- input_line_pointer= ends ? ends+8 : NULL;
-
- s=tmp_buf;
- ends=s+tmp_len;
-
- } else {
- input_line_pointer=ends+8;
- }
- new_buf=xmalloc(100);
- new_length=100;
- new_tmp=new_buf;
-
- scrub_string=s;
- scrub_last_string = ends;
- for(;;) {
- int ch;
-
- ch = do_scrub_next_char(scrub_from_string, scrub_to_string);
- if (ch==EOF) break;
- *new_tmp++=ch;
- if (new_tmp==new_buf+new_length) {
- new_buf=xrealloc(new_buf,new_length+100);
- new_tmp=new_buf+new_length;
- new_length+=100;
- }
- }
-
- if (tmp_buf)
- free(tmp_buf);
- old_buffer=buffer;
- old_input=input_line_pointer;
- old_limit=buffer_limit;
- buffer=new_buf;
- input_line_pointer=new_buf;
- buffer_limit=new_tmp;
- continue;
- }
-
- HANDLE_CONDITIONAL_ASSEMBLY();
-
- /* as_warn("Junk character %d.",c); Now done by ignore_rest */
- input_line_pointer--; /* Report unknown char as ignored. */
- ignore_rest_of_line();
- } /* while (input_line_pointer<buffer_limit) */
- if (old_buffer) {
- bump_line_counters();
- if (old_input != 0) {
- buffer=old_buffer;
- input_line_pointer=old_input;
- buffer_limit=old_limit;
- old_buffer = 0;
- goto contin;
- }
- }
- } /* while (more buffers to scan) */
- input_scrub_close(); /* Close the input file */
-
-} /* read_a_source_file() */
-
-void s_abort() {
- as_fatal(".abort detected. Abandoning ship.");
-} /* s_abort() */
-
-/* For machines where ".align 4" means align to a 4 byte boundary. */
-void s_align_bytes(arg)
-int arg;
-{
- register unsigned int temp;
- register long temp_fill;
- unsigned int i = 0;
- unsigned long max_alignment = 1 << 15;
-
- if (is_end_of_line[*input_line_pointer])
- temp = arg; /* Default value from pseudo-op table */
- else
- temp = get_absolute_expression ();
-
- if (temp > max_alignment) {
- as_bad("Alignment too large: %d. assumed.", temp = max_alignment);
- }
-
- /*
- * For the sparc, `.align (1<<n)' actually means `.align n'
- * so we have to convert it.
- */
- if (temp != 0) {
- for (i = 0; (temp & 1) == 0; temp >>= 1, ++i)
- ;
- }
- if (temp != 1)
- as_bad("Alignment not a power of 2");
-
- temp = i;
- if (*input_line_pointer == ',') {
- input_line_pointer ++;
- temp_fill = get_absolute_expression ();
- } else {
- temp_fill = 0;
- }
- /* Only make a frag if we HAVE to. . . */
- if (temp && ! need_pass_2)
- frag_align(temp, (int)temp_fill);
-
- demand_empty_rest_of_line();
-} /* s_align_bytes() */
-
-/* For machines where ".align 4" means align to 2**4 boundary. */
-void s_align_ptwo() {
- register int temp;
- register long temp_fill;
- long max_alignment = 15;
-
- temp = get_absolute_expression ();
- if (temp > max_alignment)
- as_bad("Alignment too large: %d. assumed.", temp = max_alignment);
- else if (temp < 0) {
- as_bad("Alignment negative. 0 assumed.");
- temp = 0;
- }
- if (*input_line_pointer == ',') {
- input_line_pointer ++;
- temp_fill = get_absolute_expression ();
- } else
- temp_fill = 0;
- /* Only make a frag if we HAVE to. . . */
- if (temp && ! need_pass_2)
- frag_align (temp, (int)temp_fill);
-
- record_alignment(now_seg, temp);
-
- demand_empty_rest_of_line();
-} /* s_align_ptwo() */
-
-void s_comm() {
- register char *name;
- register char c;
- register char *p;
- register int temp;
- register symbolS * symbolP;
-
- name = input_line_pointer;
- c = get_symbol_end();
- /* just after name is now '\0' */
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE();
- if (*input_line_pointer != ',') {
- as_bad("Expected comma after symbol-name: rest of line ignored.");
- ignore_rest_of_line();
- return;
- }
- input_line_pointer ++; /* skip ',' */
- if ((temp = get_absolute_expression()) < 0) {
- as_warn(".COMMon length (%d.) <0! Ignored.", temp);
- ignore_rest_of_line();
- return;
- }
- *p = 0;
- symbolP = symbol_find_or_make(name);
- *p = c;
- if (S_IS_DEFINED(symbolP)) {
- as_bad("Ignoring attempt to re-define symbol");
- ignore_rest_of_line();
- return;
- }
- if (S_GET_VALUE(symbolP)) {
- if (S_GET_VALUE(symbolP) != temp)
- as_bad("Length of .comm \"%s\" is already %d. Not changed to %d.",
- S_GET_NAME(symbolP),
- S_GET_VALUE(symbolP),
- temp);
- } else {
- S_SET_VALUE(symbolP, temp);
- S_SET_EXTERNAL(symbolP);
- }
-#ifdef VMS
- if (!temp)
- symbolP->sy_other = const_flag;
-#endif
- know(symbolP->sy_frag == &zero_address_frag);
- demand_empty_rest_of_line();
-} /* s_comm() */
+static int pop_override_ok = 0;
+static const char *pop_table_name;
void
- s_data()
+pop_insert (table)
+ const pseudo_typeS *table;
{
- register int temp;
-
- temp = get_absolute_expression ();
-#ifdef MANY_SEGMENTS
- subseg_new (SEG_E1, (subsegT)temp);
-#else
- subseg_new (SEG_DATA, (subsegT)temp);
+ const char *errtxt;
+ const pseudo_typeS *pop;
+ for (pop = table; pop->poc_name; pop++)
+ {
+ errtxt = hash_insert (po_hash, pop->poc_name, (char *) pop);
+ if (errtxt && (!pop_override_ok || strcmp (errtxt, "exists")))
+ as_fatal (_("error constructing %s pseudo-op table: %s"), pop_table_name,
+ errtxt);
+ }
+}
+
+#ifndef md_pop_insert
+#define md_pop_insert() pop_insert(md_pseudo_table)
#endif
-
-#ifdef VMS
- const_flag = 0;
+
+#ifndef obj_pop_insert
+#define obj_pop_insert() pop_insert(obj_pseudo_table)
#endif
- demand_empty_rest_of_line();
-}
-void s_app_file() {
- register char *s;
- int length;
-
- /* Some assemblers tolerate immediately following '"' */
- if ((s = demand_copy_string(&length)) != 0) {
- new_logical_line(s, -1);
- demand_empty_rest_of_line();
- }
-#ifdef OBJ_COFF
- c_dot_file_symbol(s);
-#endif /* OBJ_COFF */
-} /* s_app_file() */
-
-void s_fill() {
- long temp_repeat;
- long temp_size;
- register long temp_fill;
- char *p;
-
- if (get_absolute_expression_and_terminator(& temp_repeat) != ',') {
- input_line_pointer --; /* Backup over what was not a ','. */
- as_bad("Expect comma after rep-size in .fill:");
- ignore_rest_of_line();
- return;
- }
- if (get_absolute_expression_and_terminator(& temp_size) != ',') {
- input_line_pointer --; /* Backup over what was not a ','. */
- as_bad("Expected comma after size in .fill");
- ignore_rest_of_line();
- return;
- }
- /*
- * This is to be compatible with BSD 4.2 AS, not for any rational reason.
- */
-#define BSD_FILL_SIZE_CROCK_8 (8)
- if (temp_size > BSD_FILL_SIZE_CROCK_8) {
- as_bad(".fill size clamped to %d.", BSD_FILL_SIZE_CROCK_8);
- temp_size = BSD_FILL_SIZE_CROCK_8 ;
- } if (temp_size < 0) {
- as_warn("Size negative: .fill ignored.");
- temp_size = 0;
- } else if (temp_repeat <= 0) {
- as_warn("Repeat < 0, .fill ignored");
- temp_size = 0;
- }
- temp_fill = get_absolute_expression ();
- if (temp_size && !need_pass_2) {
- p = frag_var(rs_fill, (int)temp_size, (int)temp_size, (relax_substateT)0, (symbolS *)0, temp_repeat, (char *)0);
- bzero (p, (int)temp_size);
- /*
- * The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX flavoured AS.
- * The following bizzare behaviour is to be compatible with above.
- * I guess they tried to take up to 8 bytes from a 4-byte expression
- * and they forgot to sign extend. Un*x Sux.
- */
-#define BSD_FILL_SIZE_CROCK_4 (4)
- md_number_to_chars (p, temp_fill, temp_size > BSD_FILL_SIZE_CROCK_4 ? BSD_FILL_SIZE_CROCK_4 : (int)temp_size);
- /*
- * Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)
- * but emits no error message because it seems a legal thing to do.
- * It is a degenerate case of .fill but could be emitted by a compiler.
- */
- }
- demand_empty_rest_of_line();
-}
+#ifndef cfi_pop_insert
+#define cfi_pop_insert() pop_insert(cfi_pseudo_table)
+#endif
-#ifdef DONTDEF
-void
- s_gdbbeg()
+static void
+pobegin ()
{
- register int temp;
-
- temp = get_absolute_expression ();
- if (temp < 0)
- as_warn("Block number <0. Ignored.");
- else if (flagseen ['G'])
- gdb_block_beg ((long) temp, frag_now, (long)(obstack_next_free(& frags) - frag_now->fr_literal));
- demand_empty_rest_of_line ();
-}
+ po_hash = hash_new ();
-void
- s_gdbblock()
-{
- register int position;
- int temp;
-
- if (get_absolute_expression_and_terminator (&temp) != ',') {
- as_bad("expected comma before position in .gdbblock");
- --input_line_pointer;
- ignore_rest_of_line ();
- return;
- }
- position = get_absolute_expression ();
- if (flagseen ['G'])
- gdb_block_position ((long) temp, (long) position);
- demand_empty_rest_of_line ();
+ /* Do the target-specific pseudo ops. */
+ pop_table_name = "md";
+ md_pop_insert ();
+
+ /* Now object specific. Skip any that were in the target table. */
+ pop_table_name = "obj";
+ pop_override_ok = 1;
+ obj_pop_insert ();
+
+ /* Now portable ones. Skip any that we've seen already. */
+ pop_table_name = "standard";
+ pop_insert (potable);
+
+#ifdef TARGET_USE_CFIPOP
+ pop_table_name = "cfi";
+ pop_override_ok = 1;
+ cfi_pop_insert ();
+#endif
}
+\f
+#define HANDLE_CONDITIONAL_ASSEMBLY() \
+ if (ignore_input ()) \
+ { \
+ while (!is_end_of_line[(unsigned char) *input_line_pointer++]) \
+ if (input_line_pointer == buffer_limit) \
+ break; \
+ continue; \
+ }
-void
- s_gdbend()
+/* This function is used when scrubbing the characters between #APP
+ and #NO_APP. */
+
+static char *scrub_string;
+static char *scrub_string_end;
+
+static int
+scrub_from_string (buf, buflen)
+ char *buf;
+ int buflen;
{
- register int temp;
-
- temp = get_absolute_expression ();
- if (temp < 0)
- as_warn("Block number <0. Ignored.");
- else if (flagseen ['G'])
- gdb_block_end ((long) temp, frag_now, (long)(obstack_next_free(& frags) - frag_now->fr_literal));
- demand_empty_rest_of_line ();
-}
+ int copy;
-void
- s_gdbsym()
-{
- register char *name,
- *p;
- register char c;
- register symbolS * symbolP;
- register int temp;
-
- name = input_line_pointer;
- c = get_symbol_end();
- p = input_line_pointer;
- symbolP = symbol_find_or_make(name);
- *p = c;
- SKIP_WHITESPACE();
- if (* input_line_pointer != ',') {
- as_bad("Expected comma after name");
- ignore_rest_of_line();
- return;
- }
- input_line_pointer ++;
- if ((temp = get_absolute_expression ()) < 0) {
- as_bad("Bad GDB symbol file offset (%d.) <0! Ignored.", temp);
- ignore_rest_of_line();
- return;
- }
- if (flagseen ['G'])
- gdb_symbols_fixup (symbolP, (long)temp);
- demand_empty_rest_of_line ();
+ copy = scrub_string_end - scrub_string;
+ if (copy > buflen)
+ copy = buflen;
+ memcpy (buf, scrub_string, copy);
+ scrub_string += copy;
+ return copy;
}
+/* We read the file, putting things into a web that represents what we
+ have been reading. */
void
- s_gdbline()
+read_a_source_file (name)
+ char *name;
{
- int file_number,
- lineno;
-
- if (get_absolute_expression_and_terminator(&file_number) != ',') {
- as_bad("expected comman after filenum in .gdbline");
- ignore_rest_of_line();
- return;
- }
- lineno=get_absolute_expression();
- if (flagseen['G'])
- gdb_line(file_number,lineno);
- demand_empty_rest_of_line();
-}
+ register char c;
+ register char *s; /* String of symbol, '\0' appended. */
+ register int temp;
+ pseudo_typeS *pop;
+#ifdef WARN_COMMENTS
+ found_comment = 0;
+#endif
-void
- s_gdblinetab()
-{
- int file_number,
- offset;
-
- if (get_absolute_expression_and_terminator(&file_number) != ',') {
- as_bad("expected comma after filenum in .gdblinetab");
- ignore_rest_of_line();
- return;
- }
- offset=get_absolute_expression();
- if (flagseen['G'])
- gdb_line_tab(file_number,offset);
- demand_empty_rest_of_line();
-}
-#endif
-
-void s_globl() {
- register char *name;
- register int c;
- register symbolS * symbolP;
-
- do {
- name = input_line_pointer;
- c = get_symbol_end();
- symbolP = symbol_find_or_make(name);
- * input_line_pointer = c;
- SKIP_WHITESPACE();
- S_SET_EXTERNAL(symbolP);
- if (c==',') {
- input_line_pointer++;
- SKIP_WHITESPACE();
- if (*input_line_pointer=='\n')
- c='\n';
- }
- } while(c==',');
- demand_empty_rest_of_line();
-} /* s_globl() */
-
-void s_lcomm(needs_align)
-int needs_align; /* 1 if this was a ".bss" directive, which may require
- * a 3rd argument (alignment).
- * 0 if it was an ".lcomm" (2 args only)
- */
-{
- register char *name;
- register char c;
- register char *p;
- register int temp;
- register symbolS * symbolP;
- const int max_alignment = 15;
- int align = 0;
-
- name = input_line_pointer;
- c = get_symbol_end();
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE();
- if (*input_line_pointer != ',') {
- as_bad("Expected comma after name");
- ignore_rest_of_line();
- return;
- }
-
- ++input_line_pointer;
-
- if (*input_line_pointer == '\n') {
- as_bad("Missing size expression");
- return;
- }
-
- if ((temp = get_absolute_expression ()) < 0) {
- as_warn("BSS length (%d.) <0! Ignored.", temp);
- ignore_rest_of_line();
- return;
- }
-
- if (needs_align) {
- align = 0;
- SKIP_WHITESPACE();
- if (*input_line_pointer != ',') {
- as_bad("Expected comma after size");
- ignore_rest_of_line();
- return;
- }
- input_line_pointer++;
- SKIP_WHITESPACE();
- if (*input_line_pointer == '\n') {
- as_bad("Missing alignment");
- return;
- }
- align = get_absolute_expression ();
- if (align > max_alignment){
- align = max_alignment;
- as_warn("Alignment too large: %d. assumed.", align);
- } else if (align < 0) {
- align = 0;
- as_warn("Alignment negative. 0 assumed.");
- }
-#ifdef MANY_SEGMENTS
-#define SEG_BSS SEG_E2
- record_alignment(SEG_E2, align);
-#else
- record_alignment(SEG_BSS, align);
-#endif
- } /* if needs align */
-
- *p = 0;
- symbolP = symbol_find_or_make(name);
- *p = c;
-
- if (
-#if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- S_GET_OTHER(symbolP) == 0 &&
- S_GET_DESC(symbolP) == 0 &&
-#endif /* OBJ_AOUT or OBJ_BOUT */
- (((S_GET_SEGMENT(symbolP) == SEG_BSS) && (S_GET_VALUE(symbolP) == local_bss_counter))
- || (!S_IS_DEFINED(symbolP) && S_GET_VALUE(symbolP) == 0))) {
- if (needs_align){
- /* Align */
- align = ~ ((~0) << align); /* Convert to a mask */
- local_bss_counter =
- (local_bss_counter + align) & (~align);
- }
-
- S_SET_VALUE(symbolP,local_bss_counter);
- S_SET_SEGMENT(symbolP, SEG_BSS);
-#ifdef OBJ_COFF
- /* The symbol may already have been created with a preceding
- * ".globl" directive -- be careful not to step on storage
- * class in that case. Otherwise, set it to static.
- */
- if (S_GET_STORAGE_CLASS(symbolP) != C_EXT){
- S_SET_STORAGE_CLASS(symbolP, C_STAT);
- }
-#endif /* OBJ_COFF */
- symbolP->sy_frag = & bss_address_frag;
- local_bss_counter += temp;
- } else {
- as_bad("Ignoring attempt to re-define symbol from %d. to %d.",
- S_GET_VALUE(symbolP), local_bss_counter);
- }
- demand_empty_rest_of_line();
-
- return;
-} /* s_lcomm() */
+ buffer = input_scrub_new_file (name);
-void
- s_long()
-{
- cons(4);
-}
+ listing_file (name);
+ listing_newline (NULL);
+ register_dependency (name);
-void
- s_int()
-{
- cons(4);
-}
-
-void s_lsym() {
- register char *name;
- register char c;
- register char *p;
- register segT segment;
- expressionS exp;
- register symbolS *symbolP;
-
- /* we permit ANY defined expression: BSD4.2 demands constants */
- name = input_line_pointer;
- c = get_symbol_end();
- p = input_line_pointer;
- *p = c;
- SKIP_WHITESPACE();
- if (* input_line_pointer != ',') {
- *p = 0;
- as_bad("Expected comma after name \"%s\"", name);
- *p = c;
- ignore_rest_of_line();
- return;
- }
- input_line_pointer ++;
- segment = expression(& exp);
- if (segment != SEG_ABSOLUTE
-#ifdef MANY_SEGMENTS
- && ! ( segment >= SEG_E0 && segment <= SEG_UNKNOWN)
-#else
- && segment != SEG_DATA
- && segment != SEG_TEXT
- && segment != SEG_BSS
-#endif
- && segment != SEG_REGISTER) {
- as_bad("Bad expression: %s", segment_name(segment));
- ignore_rest_of_line();
- return;
- }
- *p = 0;
- symbolP = symbol_find_or_make(name);
-
- /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0
- && symbolP->sy_desc == 0) out of this test
- because coff doesn't have those fields, and I
- can't see when they'd ever be tripped. I don't
- think I understand why they were here so I may
- have introduced a bug. As recently as 1.37 didn't
- have this test anyway. xoxorich. */
-
- if (S_GET_SEGMENT(symbolP) == SEG_UNKNOWN
- && S_GET_VALUE(symbolP) == 0) {
- /* The name might be an undefined .global symbol; be
- sure to keep the "external" bit. */
- S_SET_SEGMENT(symbolP, segment);
- S_SET_VALUE(symbolP, (valueT)(exp.X_add_number));
- } else {
- as_bad("Symbol %s already defined", name);
- }
- *p = c;
- demand_empty_rest_of_line();
-} /* s_lsym() */
-
-void s_org() {
- register segT segment;
- expressionS exp;
- register long temp_fill;
- register char *p;
- /*
- * Don't believe the documentation of BSD 4.2 AS.
- * There is no such thing as a sub-segment-relative origin.
- * Any absolute origin is given a warning, then assumed to be segment-relative.
- * Any segmented origin expression ("foo+42") had better be in the right
- * segment or the .org is ignored.
- *
- * BSD 4.2 AS warns if you try to .org backwards. We cannot because we
- * never know sub-segment sizes when we are reading code.
- * BSD will crash trying to emit -ve numbers of filler bytes in certain
- * .orgs. We don't crash, but see as-write for that code.
- */
- /*
- * Don't make frag if need_pass_2==1.
- */
- segment = get_known_segmented_expression(&exp);
- if (*input_line_pointer == ',') {
- input_line_pointer ++;
- temp_fill = get_absolute_expression ();
- } else
- temp_fill = 0;
- if (! need_pass_2) {
- if (segment != now_seg && segment != SEG_ABSOLUTE)
- as_bad("Invalid segment \"%s\". Segment \"%s\" assumed.",
- segment_name(segment), segment_name(now_seg));
- p = frag_var (rs_org, 1, 1, (relax_substateT)0, exp . X_add_symbol,
- exp . X_add_number, (char *)0);
- * p = temp_fill;
- } /* if (ok to make frag) */
- demand_empty_rest_of_line();
-} /* s_org() */
-
-void s_set() {
- register char *name;
- register char delim;
- register char *end_name;
- register symbolS *symbolP;
-
- /*
- * Especial apologies for the random logic:
- * this just grew, and could be parsed much more simply!
- * Dean in haste.
- */
- name = input_line_pointer;
- delim = get_symbol_end();
- end_name = input_line_pointer;
- *end_name = delim;
- SKIP_WHITESPACE();
-
- if (*input_line_pointer != ',') {
- *end_name = 0;
- as_bad("Expected comma after name \"%s\"", name);
- *end_name = delim;
- ignore_rest_of_line();
- return;
- }
-
- input_line_pointer ++;
- *end_name = 0;
-
- if (name[0]=='.' && name[1]=='\0') {
- /* Turn '. = mumble' into a .org mumble */
- register segT segment;
- expressionS exp;
- register char *ptr;
-
- segment = get_known_segmented_expression(& exp);
-
- if (!need_pass_2) {
- if (segment != now_seg && segment != SEG_ABSOLUTE)
- as_bad("Invalid segment \"%s\". Segment \"%s\" assumed.",
- segment_name(segment),
- segment_name (now_seg));
- ptr = frag_var(rs_org, 1, 1, (relax_substateT)0, exp.X_add_symbol,
- exp.X_add_number, (char *)0);
- *ptr= 0;
- } /* if (ok to make frag) */
-
- *end_name = delim;
- return;
- }
-
- if ((symbolP = symbol_find(name)) == NULL
- && (symbolP = md_undefined_symbol(name)) == NULL) {
- symbolP = symbol_new(name,
- SEG_UNKNOWN,
- 0,
- &zero_address_frag);
-#ifdef OBJ_COFF
- /* "set" symbols are local unless otherwise specified. */
- SF_SET_LOCAL(symbolP);
-#endif /* OBJ_COFF */
-
- } /* make a new symbol */
-
- symbol_table_insert(symbolP);
-
- *end_name = delim;
- pseudo_set(symbolP);
- demand_empty_rest_of_line();
-} /* s_set() */
-
-void s_space() {
- long temp_repeat;
- register long temp_fill;
- register char *p;
-
- /* Just like .fill, but temp_size = 1 */
- if (get_absolute_expression_and_terminator(& temp_repeat) == ',') {
- temp_fill = get_absolute_expression ();
- } else {
- input_line_pointer --; /* Backup over what was not a ','. */
- temp_fill = 0;
- }
- if (temp_repeat <= 0) {
- as_warn("Repeat < 0, .space ignored");
- ignore_rest_of_line();
- return;
- }
- if (! need_pass_2) {
- p = frag_var (rs_fill, 1, 1, (relax_substateT)0, (symbolS *)0,
- temp_repeat, (char *)0);
- * p = temp_fill;
- }
- demand_empty_rest_of_line();
-} /* s_space() */
+ /* Generate debugging information before we've read anything in to denote
+ this file as the "main" source file and not a subordinate one
+ (e.g. N_SO vs N_SOL in stabs). */
+ generate_file_debug ();
-void
- s_text()
-{
- register int temp;
-
- temp = get_absolute_expression ();
-#ifdef MANY_SEGMENTS
- subseg_new (SEG_E0, (subsegT)temp);
-#else
- subseg_new (SEG_TEXT, (subsegT)temp);
+ while ((buffer_limit = input_scrub_next_buffer (&input_line_pointer)) != 0)
+ { /* We have another line to parse. */
+ know (buffer_limit[-1] == '\n'); /* Must have a sentinel. */
+
+ while (input_line_pointer < buffer_limit)
+ {
+ /* We have more of this buffer to parse. */
+
+ /* We now have input_line_pointer->1st char of next line.
+ If input_line_pointer [-1] == '\n' then we just
+ scanned another line: so bump line counters. */
+ if (is_end_of_line[(unsigned char) input_line_pointer[-1]])
+ {
+#ifdef md_start_line_hook
+ md_start_line_hook ();
#endif
- demand_empty_rest_of_line();
-} /* s_text() */
+ if (input_line_pointer[-1] == '\n')
+ bump_line_counters ();
-\f
-/*(JF was static, but can't be if machine dependent pseudo-ops are to use it */
+ line_label = NULL;
-void demand_empty_rest_of_line() {
- SKIP_WHITESPACE();
- if (is_end_of_line [*input_line_pointer]) {
- input_line_pointer++;
- } else {
- ignore_rest_of_line();
- }
- /* Return having already swallowed end-of-line. */
-} /* Return pointing just after end-of-line. */
+ if (LABELS_WITHOUT_COLONS || flag_m68k_mri)
+ {
+ /* Text at the start of a line must be a label, we
+ run down and stick a colon in. */
+ if (is_name_beginner (*input_line_pointer))
+ {
+ char *line_start = input_line_pointer;
+ char c;
+ int mri_line_macro;
-void
- ignore_rest_of_line() /* For suspect lines: gives warning. */
-{
- if (! is_end_of_line [* input_line_pointer])
- {
- if (isprint(*input_line_pointer))
- as_bad("Rest of line ignored. First ignored character is `%c'.",
- *input_line_pointer);
- else
- as_bad("Rest of line ignored. First ignored character valued 0x%x.",
- *input_line_pointer);
- while (input_line_pointer < buffer_limit
- && ! is_end_of_line [* input_line_pointer])
+ LISTING_NEWLINE ();
+ HANDLE_CONDITIONAL_ASSEMBLY ();
+
+ c = get_symbol_end ();
+
+ /* In MRI mode, the EQU and MACRO pseudoops must
+ be handled specially. */
+ mri_line_macro = 0;
+ if (flag_m68k_mri)
{
- input_line_pointer ++;
- }
- }
- input_line_pointer ++; /* Return pointing just after end-of-line. */
- know(is_end_of_line [input_line_pointer [-1]]);
-}
-
-/*
- * pseudo_set()
- *
- * In: Pointer to a symbol.
- * Input_line_pointer->expression.
- *
- * Out: Input_line_pointer->just after any whitespace after expression.
- * Tried to set symbol to value of expression.
- * Will change symbols type, value, and frag;
- * May set need_pass_2 == 1.
- */
-void
- pseudo_set (symbolP)
-symbolS * symbolP;
-{
- expressionS exp;
- register segT segment;
-#if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- int ext;
-#endif /* OBJ_AOUT or OBJ_BOUT */
-
- know(symbolP); /* NULL pointer is logic error. */
-#if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- ext=S_IS_EXTERNAL(symbolP);
-#endif /* OBJ_AOUT or OBJ_BOUT */
-
- if ((segment = expression(& exp)) == SEG_ABSENT)
- {
- as_bad("Missing expression: absolute 0 assumed");
- exp . X_seg = SEG_ABSOLUTE;
- exp . X_add_number = 0;
- }
-
- switch (segment)
- {
- case SEG_BIG:
- as_bad("%s number invalid. Absolute 0 assumed.",
- exp . X_add_number > 0 ? "Bignum" : "Floating-Point");
- S_SET_SEGMENT(symbolP, SEG_ABSOLUTE);
-#if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- ext ? S_SET_EXTERNAL(symbolP) :
- S_CLEAR_EXTERNAL(symbolP);
-#endif /* OBJ_AOUT or OBJ_BOUT */
- S_SET_VALUE(symbolP, 0);
- symbolP->sy_frag = & zero_address_frag;
- break;
-
- case SEG_ABSENT:
- as_warn("No expression: Using absolute 0");
- S_SET_SEGMENT(symbolP, SEG_ABSOLUTE);
-#if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- ext ? S_SET_EXTERNAL(symbolP) :
- S_CLEAR_EXTERNAL(symbolP);
-#endif /* OBJ_AOUT or OBJ_BOUT */
- S_SET_VALUE(symbolP, 0);
- symbolP->sy_frag = & zero_address_frag;
- break;
-
- case SEG_DIFFERENCE:
- if (exp.X_add_symbol && exp.X_subtract_symbol
- && (S_GET_SEGMENT(exp.X_add_symbol) ==
- S_GET_SEGMENT(exp.X_subtract_symbol))) {
- if (exp.X_add_symbol->sy_frag != exp.X_subtract_symbol->sy_frag) {
- as_bad("Unknown expression: symbols %s and %s are in different frags.",
- S_GET_NAME(exp.X_add_symbol), S_GET_NAME(exp.X_subtract_symbol));
- need_pass_2++;
+ char *rest = input_line_pointer + 1;
+
+ if (*rest == ':')
+ ++rest;
+ if (*rest == ' ' || *rest == '\t')
+ ++rest;
+ if ((strncasecmp (rest, "EQU", 3) == 0
+ || strncasecmp (rest, "SET", 3) == 0)
+ && (rest[3] == ' ' || rest[3] == '\t'))
+ {
+ input_line_pointer = rest + 3;
+ equals (line_start,
+ strncasecmp (rest, "SET", 3) == 0);
+ continue;
}
- exp.X_add_number+=S_GET_VALUE(exp.X_add_symbol) -
- S_GET_VALUE(exp.X_subtract_symbol);
- } else
- as_bad("Complex expression. Absolute segment assumed.");
- case SEG_ABSOLUTE:
- S_SET_SEGMENT(symbolP, SEG_ABSOLUTE);
-#if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- ext ? S_SET_EXTERNAL(symbolP) :
- S_CLEAR_EXTERNAL(symbolP);
-#endif /* OBJ_AOUT or OBJ_BOUT */
- S_SET_VALUE(symbolP, exp.X_add_number);
- symbolP->sy_frag = & zero_address_frag;
- break;
-
- default:
-#ifdef MANY_SEGMENTS
- S_SET_SEGMENT(symbolP, segment);
-#else
- switch(segment) {
- case SEG_DATA: S_SET_SEGMENT(symbolP, SEG_DATA); break;
- case SEG_TEXT: S_SET_SEGMENT(symbolP, SEG_TEXT); break;
- case SEG_BSS: S_SET_SEGMENT(symbolP, SEG_BSS); break;
- default: as_fatal("failed sanity check.");
- } /* switch on segment */
-#endif
-#if defined(OBJ_AOUT) | defined(OBJ_BOUT)
- if (ext) {
- S_SET_EXTERNAL(symbolP);
- } else {
- S_CLEAR_EXTERNAL(symbolP);
- } /* if external */
-#endif /* OBJ_AOUT or OBJ_BOUT */
-
- S_SET_VALUE(symbolP, exp.X_add_number + S_GET_VALUE(exp.X_add_symbol));
- symbolP->sy_frag = exp . X_add_symbol->sy_frag;
- break;
-
- case SEG_PASS1: /* Not an error. Just try another pass. */
- symbolP->sy_forward=exp.X_add_symbol;
- as_bad("Unknown expression");
- know(need_pass_2 == 1);
- break;
-
- case SEG_UNKNOWN:
- symbolP->sy_forward=exp.X_add_symbol;
- /* as_warn("unknown symbol"); */
- /* need_pass_2 = 1; */
- break;
-
-
-
- }
-}
-\f
-/*
- * cons()
- *
- * CONStruct more frag of .bytes, or .words etc.
- * Should need_pass_2 be 1 then emit no frag(s).
- * This understands EXPRESSIONS, as opposed to big_cons().
- *
- * Bug (?)
- *
- * This has a split personality. We use expression() to read the
- * value. We can detect if the value won't fit in a byte or word.
- * But we can't detect if expression() discarded significant digits
- * in the case of a long. Not worth the crocks required to fix it.
- */
-
-/* worker to do .byte etc statements */
-/* clobbers input_line_pointer, checks */
-/* end-of-line. */
-void cons(nbytes)
-register unsigned int nbytes; /* 1=.byte, 2=.word, 4=.long */
-{
- register char c;
- register long mask; /* High-order bits we will left-truncate, */
- /* but includes sign bit also. */
- register long get; /* what we get */
- register long use; /* get after truncation. */
- register long unmask; /* what bits we will store */
- register char * p;
- register segT segment;
- expressionS exp;
-
- /*
- * Input_line_pointer->1st char after pseudo-op-code and could legally
- * be a end-of-line. (Or, less legally an eof - which we cope with.)
- */
- /* JF << of >= number of bits in the object is undefined. In particular
- SPARC (Sun 4) has problems */
-
- if (nbytes>=sizeof(long)) {
- mask = 0;
- } else {
- mask = ~0 << (BITS_PER_CHAR * nbytes); /* Don't store these bits. */
- } /* bigger than a long */
-
- unmask = ~mask; /* Do store these bits. */
-
-#ifdef NEVER
- "Do this mod if you want every overflow check to assume SIGNED 2's complement data.";
- mask = ~ (unmask >> 1); /* Includes sign bit now. */
-#endif
-
- /*
- * The following awkward logic is to parse ZERO or more expressions,
- * comma seperated. Recall an expression includes its leading &
- * trailing blanks. We fake a leading ',' if there is (supposed to
- * be) a 1st expression, and keep demanding 1 expression for each ','.
- */
- if (is_it_end_of_statement()) {
- c = 0; /* Skip loop. */
- input_line_pointer++; /* Matches end-of-loop 'correction'. */
- } else {
- c = ',';
- } /* if the end else fake it */
-
- /* Do loop. */
- while (c == ',') {
-#ifdef WANT_BITFIELDS
- unsigned int bits_available = BITS_PER_CHAR * nbytes;
- /* used for error messages and rescanning */
- char *hold = input_line_pointer;
-#endif /* WANT_BITFIELDS */
-
- /* At least scan over the expression. */
- segment = expression(&exp);
-
-#ifdef WANT_BITFIELDS
- /* Some other assemblers, (eg, asm960), allow
- bitfields after ".byte" as w:x,y:z, where w and
- y are bitwidths and x and y are values. They
- then pack them all together. We do a little
- better in that we allow them in words, longs,
- etc. and we'll pack them in target byte order
- for you.
-
- The rules are: pack least significat bit first,
- if a field doesn't entirely fit, put it in the
- next unit. Overflowing the bitfield is
- explicitly *not* even a warning. The bitwidth
- should be considered a "mask".
-
- FIXME-SOMEDAY: If this is considered generally
- useful, this logic should probably be reworked.
- xoxorich. */
-
- if (*input_line_pointer == ':') { /* bitfields */
- long value = 0;
-
- for (;;) {
- unsigned long width;
-
- if (*input_line_pointer != ':') {
- input_line_pointer = hold;
- break;
- } /* next piece is not a bitfield */
-
- /* In the general case, we can't allow
- full expressions with symbol
- differences and such. The relocation
- entries for symbols not defined in this
- assembly would require arbitrary field
- widths, positions, and masks which most
- of our current object formats don't
- support.
-
- In the specific case where a symbol
- *is* defined in this assembly, we
- *could* build fixups and track it, but
- this could lead to confusion for the
- backends. I'm lazy. I'll take any
- SEG_ABSOLUTE. I think that means that
- you can use a previous .set or
- .equ type symbol. xoxorich. */
-
- if (segment == SEG_ABSENT) {
- as_warn("Using a bit field width of zero.");
- exp.X_add_number = 0;
- segment = SEG_ABSOLUTE;
- } /* implied zero width bitfield */
-
- if (segment != SEG_ABSOLUTE) {
- *input_line_pointer = '\0';
- as_bad("Field width \"%s\" too complex for a bitfield.\n", hold);
- *input_line_pointer = ':';
- demand_empty_rest_of_line();
- return;
- } /* too complex */
-
- if ((width = exp.X_add_number) > (BITS_PER_CHAR * nbytes)) {
- as_warn("Field width %d too big to fit in %d bytes: truncated to %d bits.",
- width, nbytes, (BITS_PER_CHAR * nbytes));
- width = BITS_PER_CHAR * nbytes;
- } /* too big */
-
- if (width > bits_available) {
- /* FIXME-SOMEDAY: backing up and
- reparsing is wasteful */
- input_line_pointer = hold;
- exp.X_add_number = value;
- break;
- } /* won't fit */
-
- hold = ++input_line_pointer; /* skip ':' */
-
- if ((segment = expression(&exp)) != SEG_ABSOLUTE) {
- char cache = *input_line_pointer;
-
- *input_line_pointer = '\0';
- as_bad("Field value \"%s\" too complex for a bitfield.\n", hold);
- *input_line_pointer = cache;
- demand_empty_rest_of_line();
- return;
- } /* too complex */
-
- value |= (~(-1 << width) & exp.X_add_number)
- << ((BITS_PER_CHAR * nbytes) - bits_available);
-
- if ((bits_available -= width) == 0
- || is_it_end_of_statement()
- || *input_line_pointer != ',') {
- break;
- } /* all the bitfields we're gonna get */
-
- hold = ++input_line_pointer;
- segment = expression(&exp);
- } /* forever loop */
-
- exp.X_add_number = value;
- segment = SEG_ABSOLUTE;
- } /* if looks like a bitfield */
-#endif /* WANT_BITFIELDS */
-
- if (!need_pass_2) { /* Still worthwhile making frags. */
-
- /* Don't call this if we are going to junk this pass anyway! */
- know(segment != SEG_PASS1);
-
- if (segment == SEG_DIFFERENCE && exp.X_add_symbol == NULL) {
- as_bad("Subtracting symbol \"%s\"(segment\"%s\") is too hard. Absolute segment assumed.",
- S_GET_NAME(exp.X_subtract_symbol),
- segment_name(S_GET_SEGMENT(exp.X_subtract_symbol)));
- segment = SEG_ABSOLUTE;
- /* Leave exp . X_add_number alone. */
+ if (strncasecmp (rest, "MACRO", 5) == 0
+ && (rest[5] == ' '
+ || rest[5] == '\t'
+ || is_end_of_line[(unsigned char) rest[5]]))
+ mri_line_macro = 1;
}
- p = frag_more(nbytes);
- switch (segment) {
- case SEG_BIG:
- as_bad("%s number invalid. Absolute 0 assumed.",
- exp . X_add_number > 0 ? "Bignum" : "Floating-Point");
- md_number_to_chars (p, (long)0, nbytes);
- break;
-
- case SEG_ABSENT:
- as_warn("0 assumed for missing expression");
- exp . X_add_number = 0;
- know(exp . X_add_symbol == NULL);
- /* fall into SEG_ABSOLUTE */
- case SEG_ABSOLUTE:
- get = exp . X_add_number;
- use = get & unmask;
- if ((get & mask) && (get & mask) != mask)
- { /* Leading bits contain both 0s & 1s. */
- as_warn("Value 0x%x truncated to 0x%x.", get, use);
- }
- md_number_to_chars (p, use, nbytes); /* put bytes in right order. */
- break;
-
- case SEG_DIFFERENCE:
-#ifndef WORKING_DOT_WORD
- if (nbytes==2) {
- struct broken_word *x;
-
- x=(struct broken_word *)xmalloc(sizeof(struct broken_word));
- x->next_broken_word=broken_words;
- broken_words=x;
- x->frag=frag_now;
- x->word_goes_here=p;
- x->dispfrag=0;
- x->add=exp.X_add_symbol;
- x->sub=exp.X_subtract_symbol;
- x->addnum=exp.X_add_number;
- x->added=0;
- new_broken_words++;
- break;
- }
- /* Else Fall through into. . . */
-#endif
- default:
- case SEG_UNKNOWN:
-#ifdef TC_NS32K
- fix_new_ns32k (frag_now, p - frag_now->fr_literal, nbytes,
- exp . X_add_symbol, exp . X_subtract_symbol,
- exp . X_add_number, 0, 0, 2, 0, 0);
-#else
- fix_new (frag_now, p - frag_now->fr_literal, nbytes,
- exp . X_add_symbol, exp . X_subtract_symbol,
- exp . X_add_number, 0, RELOC_32);
-#endif /* TC_NS32K */
- break;
- } /* switch(segment) */
- } /* if (!need_pass_2) */
- c = *input_line_pointer++;
- } /* while(c==',') */
- input_line_pointer--; /* Put terminator back into stream. */
- demand_empty_rest_of_line();
-} /* cons() */
-\f
-/*
- * big_cons()
- *
- * CONStruct more frag(s) of .quads, or .octa etc.
- * Makes 0 or more new frags.
- * If need_pass_2 == 1, generate no frag.
- * This understands only bignums, not expressions. Cons() understands
- * expressions.
- *
- * Constants recognised are '0...'(octal) '0x...'(hex) '...'(decimal).
- *
- * This creates objects with struct obstack_control objs, destroying
- * any context objs held about a partially completed object. Beware!
- *
- *
- * I think it sucks to have 2 different types of integers, with 2
- * routines to read them, store them etc.
- * It would be nicer to permit bignums in expressions and only
- * complain if the result overflowed. However, due to "efficiency"...
- */
-/* worker to do .quad etc statements */
-/* clobbers input_line_pointer, checks */
-/* end-of-line. */
-/* 8=.quad 16=.octa ... */
-
-void big_cons(nbytes)
-register int nbytes;
-{
- register char c; /* input_line_pointer->c. */
- register int radix;
- register long length; /* Number of chars in an object. */
- register int digit; /* Value of 1 digit. */
- register int carry; /* For multi-precision arithmetic. */
- register int work; /* For multi-precision arithmetic. */
- register char * p; /* For multi-precision arithmetic. */
-
- extern char hex_value[]; /* In hex_value.c. */
-
- /*
- * The following awkward logic is to parse ZERO or more strings,
- * comma seperated. Recall an expression includes its leading &
- * trailing blanks. We fake a leading ',' if there is (supposed to
- * be) a 1st expression, and keep demanding 1 expression for each ','.
- */
- if (is_it_end_of_statement())
- {
- c = 0; /* Skip loop. */
+
+ /* In MRI mode, we need to handle the MACRO
+ pseudo-op specially: we don't want to put the
+ symbol in the symbol table. */
+ if (!mri_line_macro
+#ifdef TC_START_LABEL_WITHOUT_COLON
+ && TC_START_LABEL_WITHOUT_COLON(c,
+ input_line_pointer)
+#endif
+ )
+ line_label = colon (line_start);
+ else
+ line_label = symbol_create (line_start,
+ absolute_section,
+ (valueT) 0,
+ &zero_address_frag);
+
+ *input_line_pointer = c;
+ if (c == ':')
+ input_line_pointer++;
+ }
+ }
}
- else
+
+ /* We are at the begining of a line, or similar place.
+ We expect a well-formed assembler statement.
+ A "symbol-name:" is a statement.
+
+ Depending on what compiler is used, the order of these tests
+ may vary to catch most common case 1st.
+ Each test is independent of all other tests at the (top) level.
+ PLEASE make a compiler that doesn't use this assembler.
+ It is crufty to waste a compiler's time encoding things for this
+ assembler, which then wastes more time decoding it.
+ (And communicating via (linear) files is silly!
+ If you must pass stuff, please pass a tree!) */
+ if ((c = *input_line_pointer++) == '\t'
+ || c == ' '
+ || c == '\f'
+ || c == 0)
+ c = *input_line_pointer++;
+
+ know (c != ' '); /* No further leading whitespace. */
+
+#ifndef NO_LISTING
+ /* If listing is on, and we are expanding a macro, then give
+ the listing code the contents of the expanded line. */
+ if (listing)
{
- c = ','; /* Do loop. */
- -- input_line_pointer;
+ if ((listing & LISTING_MACEXP) && macro_nest > 0)
+ {
+ char *copy;
+ int len;
+
+ /* Find the end of the current expanded macro line. */
+ for (s = input_line_pointer - 1; *s; ++s)
+ if (is_end_of_line[(unsigned char) *s])
+ break;
+
+ /* Copy it for safe keeping. Also give an indication of
+ how much macro nesting is involved at this point. */
+ len = s - (input_line_pointer - 1);
+ copy = (char *) xmalloc (len + macro_nest + 2);
+ memset (copy, '>', macro_nest);
+ copy[macro_nest] = ' ';
+ memcpy (copy + macro_nest + 1, input_line_pointer - 1, len);
+ copy[macro_nest + 1 + len] = '\0';
+
+ /* Install the line with the listing facility. */
+ listing_newline (copy);
+ }
+ else
+ listing_newline (NULL);
}
- while (c == ',')
+#endif
+ /* C is the 1st significant character.
+ Input_line_pointer points after that character. */
+ if (is_name_beginner (c))
{
- ++ input_line_pointer;
- SKIP_WHITESPACE();
- c = * input_line_pointer;
- /* C contains 1st non-blank character of what we hope is a number. */
- if (c == '0')
- {
- c = * ++ input_line_pointer;
- if (c == 'x' || c=='X')
- {
- c = * ++ input_line_pointer;
- radix = 16;
- }
- else
- {
- radix = 8;
- }
- }
- else
+ /* Want user-defined label or pseudo/opcode. */
+ HANDLE_CONDITIONAL_ASSEMBLY ();
+
+ s = --input_line_pointer;
+ c = get_symbol_end (); /* name's delimiter. */
+
+ /* C is character after symbol.
+ That character's place in the input line is now '\0'.
+ 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 (flag_m68k_mri)
+ {
+ char *rest = input_line_pointer + 1;
+
+ /* In MRI mode, \tsym: set 0 is permitted. */
+ if (*rest == ':')
+ ++rest;
+
+ if (*rest == ' ' || *rest == '\t')
+ ++rest;
+
+ if ((strncasecmp (rest, "EQU", 3) == 0
+ || strncasecmp (rest, "SET", 3) == 0)
+ && (rest[3] == ' ' || rest[3] == '\t'))
{
- radix = 10;
+ input_line_pointer = rest + 3;
+ equals (s, 1);
+ continue;
}
- /*
- * This feature (?) is here to stop people worrying about
- * mysterious zero constants: which is what they get when
- * they completely omit digits.
- */
- if (hex_value[c] >= radix) {
- as_bad("Missing digits. 0 assumed.");
}
- bignum_high = bignum_low - 1; /* Start constant with 0 chars. */
- for(; (digit = hex_value [c]) < radix; c = * ++ input_line_pointer)
- {
- /* Multiply existing number by radix, then add digit. */
- carry = digit;
- for (p=bignum_low; p <= bignum_high; p++)
- {
- work = (*p & MASK_CHAR) * radix + carry;
- *p = work & MASK_CHAR;
- carry = work >> BITS_PER_CHAR;
- }
- if (carry)
- {
- grow_bignum();
- * bignum_high = carry & MASK_CHAR;
- know((carry & ~ MASK_CHAR) == 0);
- }
- }
- length = bignum_high - bignum_low + 1;
- if (length > nbytes)
+
+ line_label = colon (s); /* User-defined label. */
+ /* Put ':' back for error messages' sake. */
+ *input_line_pointer++ = ':';
+#ifdef tc_check_label
+ tc_check_label (line_label);
+#endif
+ /* Input_line_pointer->after ':'. */
+ SKIP_WHITESPACE ();
+ }
+ else if (c == '='
+ || ((c == ' ' || c == '\t')
+ && input_line_pointer[1] == '='
+#ifdef TC_EQUAL_IN_INSN
+ && !TC_EQUAL_IN_INSN (c, input_line_pointer)
+#endif
+ ))
+ {
+ equals (s, 1);
+ demand_empty_rest_of_line ();
+ }
+ else
+ {
+ /* Expect pseudo-op or machine instruction. */
+ pop = NULL;
+
+#ifdef IGNORE_OPCODE_CASE
+ {
+ char *s2 = s;
+
+ strncpy (original_case_string, s2, sizeof (original_case_string));
+ original_case_string[sizeof (original_case_string) - 1] = 0;
+
+ while (*s2)
+ {
+ *s2 = TOLOWER (*s2);
+ s2++;
+ }
+ }
+#endif
+ if (NO_PSEUDO_DOT || flag_m68k_mri)
+ {
+ /* The MRI assembler and the m88k use pseudo-ops
+ without a period. */
+ pop = (pseudo_typeS *) hash_find (po_hash, s);
+ if (pop != NULL && pop->poc_handler == NULL)
+ pop = NULL;
+ }
+
+ if (pop != NULL
+ || (!flag_m68k_mri && *s == '.'))
+ {
+ /* PSEUDO - OP.
+
+ WARNING: c has next char, which may be end-of-line.
+ We lookup the pseudo-op table with s+1 because we
+ already know that the pseudo-op begins with a '.'. */
+
+ if (pop == NULL)
+ pop = (pseudo_typeS *) hash_find (po_hash, s + 1);
+
+ /* In MRI mode, we may need to insert an
+ automatic alignment directive. What a hack
+ this is. */
+ if (mri_pending_align
+ && (pop == NULL
+ || !((pop->poc_handler == cons
+ && pop->poc_val == 1)
+ || (pop->poc_handler == s_space
+ && pop->poc_val == 1)
+#ifdef tc_conditional_pseudoop
+ || tc_conditional_pseudoop (pop)
+#endif
+ || pop->poc_handler == s_if
+ || pop->poc_handler == s_ifdef
+ || pop->poc_handler == s_ifc
+ || pop->poc_handler == s_ifeqs
+ || pop->poc_handler == s_else
+ || pop->poc_handler == s_endif
+ || pop->poc_handler == s_globl
+ || pop->poc_handler == s_ignore)))
{
- as_warn("Most significant bits truncated in integer constant.");
+ do_align (1, (char *) NULL, 0, 0);
+ mri_pending_align = 0;
+
+ if (line_label != NULL)
+ {
+ symbol_set_frag (line_label, frag_now);
+ S_SET_VALUE (line_label, frag_now_fix ());
+ }
}
- else
+
+ /* Print the error msg now, while we still can. */
+ if (pop == NULL)
{
- register long leading_zeroes;
-
- for(leading_zeroes = nbytes - length;
- leading_zeroes;
- leading_zeroes --)
- {
- grow_bignum();
- * bignum_high = 0;
- }
+ as_bad (_("unknown pseudo-op: `%s'"), s);
+ *input_line_pointer = c;
+ s_ignore (0);
+ continue;
}
- if (! need_pass_2)
+
+ /* Put it back for error messages etc. */
+ *input_line_pointer = c;
+ /* The following skip of whitespace is compulsory.
+ A well shaped space is sometimes all that separates
+ keyword from operands. */
+ if (c == ' ' || c == '\t')
+ input_line_pointer++;
+
+ /* Input_line is restored.
+ Input_line_pointer->1st non-blank char
+ after pseudo-operation. */
+ (*pop->poc_handler) (pop->poc_val);
+
+ /* If that was .end, just get out now. */
+ if (pop->poc_handler == s_end)
+ goto quit;
+ }
+ else
+ {
+ int inquote = 0;
+#ifdef QUOTES_IN_INSN
+ int inescape = 0;
+#endif
+
+ /* WARNING: c has char, which may be end-of-line. */
+ /* Also: input_line_pointer->`\0` where c was. */
+ *input_line_pointer = c;
+ while (!is_end_of_line[(unsigned char) *input_line_pointer]
+ || inquote
+#ifdef TC_EOL_IN_INSN
+ || TC_EOL_IN_INSN (input_line_pointer)
+#endif
+ )
{
- p = frag_more (nbytes);
- bcopy (bignum_low, p, (int)nbytes);
+ if (flag_m68k_mri && *input_line_pointer == '\'')
+ inquote = !inquote;
+#ifdef QUOTES_IN_INSN
+ if (inescape)
+ inescape = 0;
+ else if (*input_line_pointer == '"')
+ inquote = !inquote;
+ else if (*input_line_pointer == '\\')
+ inescape = 1;
+#endif
+ input_line_pointer++;
}
- /* C contains character after number. */
- SKIP_WHITESPACE();
- c = * input_line_pointer;
- /* C contains 1st non-blank character after number. */
- }
- demand_empty_rest_of_line();
-} /* big_cons() */
-
-/* Extend bignum by 1 char. */
-static void grow_bignum() {
- register long length;
-
- bignum_high ++;
- if (bignum_high >= bignum_limit)
- {
- length = bignum_limit - bignum_low;
- bignum_low = xrealloc(bignum_low, length + length);
- bignum_high = bignum_low + length;
- bignum_limit = bignum_low + length + length;
- }
-} /* grow_bignum(); */
-\f
-/*
- * float_cons()
- *
- * CONStruct some more frag chars of .floats .ffloats etc.
- * Makes 0 or more new frags.
- * If need_pass_2 == 1, no frags are emitted.
- * This understands only floating literals, not expressions. Sorry.
- *
- * A floating constant is defined by atof_generic(), except it is preceded
- * by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
- * reading, I decided to be incompatible. This always tries to give you
- * rounded bits to the precision of the pseudo-op. Former AS did premature
- * truncatation, restored noisy bits instead of trailing 0s AND gave you
- * a choice of 2 flavours of noise according to which of 2 floating-point
- * scanners you directed AS to use.
- *
- * In: input_line_pointer->whitespace before, or '0' of flonum.
- *
- */
-
-void /* JF was static, but can't be if VAX.C is goning to use it */
- float_cons(float_type) /* Worker to do .float etc statements. */
-/* Clobbers input_line-pointer, checks end-of-line. */
-register int float_type; /* 'f':.ffloat ... 'F':.float ... */
-{
- register char * p;
- register char c;
- int length; /* Number of chars in an object. */
- register char * err; /* Error from scanning floating literal. */
- char temp [MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
-
- /*
- * The following awkward logic is to parse ZERO or more strings,
- * comma seperated. Recall an expression includes its leading &
- * trailing blanks. We fake a leading ',' if there is (supposed to
- * be) a 1st expression, and keep demanding 1 expression for each ','.
- */
- if (is_it_end_of_statement())
- {
- c = 0; /* Skip loop. */
- ++ input_line_pointer; /*->past termintor. */
- }
- else
- {
- c = ','; /* Do loop. */
- }
- while (c == ',')
- {
- /* input_line_pointer->1st char of a flonum (we hope!). */
- SKIP_WHITESPACE();
- /* Skip any 0{letter} that may be present. Don't even check if the
- * letter is legal. Someone may invent a "z" format and this routine
- * has no use for such information. Lusers beware: you get
- * diagnostics if your input is ill-conditioned.
- */
-
- if (input_line_pointer[0]=='0' && isalpha(input_line_pointer[1]))
- input_line_pointer+=2;
-
- err = md_atof (float_type, temp, &length);
- know(length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
- know(length > 0);
- if (* err)
+
+ c = *input_line_pointer;
+ *input_line_pointer = '\0';
+
+ generate_lineno_debug ();
+
+ if (macro_defined)
{
- as_bad("Bad floating literal: %s", err);
- ignore_rest_of_line();
- /* Input_line_pointer->just after end-of-line. */
- c = 0; /* Break out of loop. */
+ sb out;
+ const char *err;
+ macro_entry *macro;
+
+ if (check_macro (s, &out, &err, ¯o))
+ {
+ if (err != NULL)
+ as_bad ("%s", err);
+ *input_line_pointer++ = c;
+ input_scrub_include_sb (&out,
+ input_line_pointer, 1);
+ sb_kill (&out);
+ buffer_limit =
+ input_scrub_next_buffer (&input_line_pointer);
+#ifdef md_macro_info
+ md_macro_info (macro);
+#endif
+ continue;
+ }
}
- else
+
+ if (mri_pending_align)
{
- if (! need_pass_2)
- {
- p = frag_more (length);
- bcopy (temp, p, length);
- }
- SKIP_WHITESPACE();
- c = * input_line_pointer ++;
- /* C contains 1st non-white character after number. */
- /* input_line_pointer->just after terminator (c). */
+ do_align (1, (char *) NULL, 0, 0);
+ mri_pending_align = 0;
+ if (line_label != NULL)
+ {
+ symbol_set_frag (line_label, frag_now);
+ S_SET_VALUE (line_label, frag_now_fix ());
+ }
}
+
+ md_assemble (s); /* Assemble 1 instruction. */
+
+ *input_line_pointer++ = c;
+
+ /* We resume loop AFTER the end-of-line from
+ this instruction. */
+ }
+ }
+ continue;
}
- -- input_line_pointer; /*->terminator (is not ','). */
- demand_empty_rest_of_line();
-} /* float_cons() */
-\f
-/*
- * stringer()
- *
- * We read 0 or more ',' seperated, double-quoted strings.
- *
- * Caller should have checked need_pass_2 is FALSE because we don't check it.
- */
-
-
-void stringer(append_zero ) /* Worker to do .ascii etc statements. */
-/* Checks end-of-line. */
-register int append_zero; /* 0: don't append '\0', else 1 */
-{
- /* register char * p; JF unused */
- /* register int length; JF unused */ /* Length of string we read, excluding */
- /* trailing '\0' implied by closing quote. */
- /* register char * where; JF unused */
- /* register fragS * fragP; JF unused */
- register unsigned int c;
-
- /*
- * The following awkward logic is to parse ZERO or more strings,
- * comma seperated. Recall a string expression includes spaces
- * before the opening '\"' and spaces after the closing '\"'.
- * We fake a leading ',' if there is (supposed to be)
- * a 1st, expression. We keep demanding expressions for each
- * ','.
- */
- if (is_it_end_of_statement())
- {
- c = 0; /* Skip loop. */
- ++ input_line_pointer; /* Compensate for end of loop. */
- }
- else
+
+ /* Empty statement? */
+ if (is_end_of_line[(unsigned char) c])
+ continue;
+
+ if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB) && ISDIGIT (c))
{
- c = ','; /* Do loop. */
- }
- while (c == ',' || c == '<' || c == '"' ) {
- SKIP_WHITESPACE();
- switch (*input_line_pointer) {
- case '\"':
- ++input_line_pointer; /*->1st char of string. */
- while (is_a_char(c = next_char_of_string())) {
- FRAG_APPEND_1_CHAR(c);
- }
- if (append_zero) {
- FRAG_APPEND_1_CHAR(0);
- }
- know(input_line_pointer [-1] == '\"');
- break;
- case '<':
- input_line_pointer++;
- c =get_single_number();
- FRAG_APPEND_1_CHAR(c);
- if(*input_line_pointer != '>') {
- as_bad("Expected <nn>");
- }
- input_line_pointer++;
- break;
- case ',':
- input_line_pointer++;
- break;
+ /* local label ("4:") */
+ char *backup = input_line_pointer;
+
+ HANDLE_CONDITIONAL_ASSEMBLY ();
+
+ temp = c - '0';
+
+ /* Read the whole number. */
+ while (ISDIGIT (*input_line_pointer))
+ {
+ temp = (temp * 10) + *input_line_pointer - '0';
+ ++input_line_pointer;
}
- SKIP_WHITESPACE();
- c = *input_line_pointer;
- }
-
- 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
- multibyte chars, wide chars, etc. Also be careful about
- returning values bigger than 1 byte. xoxorich. */
-
-unsigned int next_char_of_string() {
- register unsigned int c;
-
- c = *input_line_pointer++ & CHAR_MASK;
- switch (c) {
- case '\"':
- c = NOT_A_CHAR;
- break;
-
- case '\\':
- switch (c = *input_line_pointer++) {
- case 'b':
- c = '\b';
- break;
-
- case 'f':
- c = '\f';
- break;
-
- case 'n':
- c = '\n';
- break;
-
- case 'r':
- c = '\r';
- break;
-
- case 't':
- c = '\t';
- break;
-
-#ifdef BACKSLASH_V
- case 'v':
- c = '\013';
- break;
+
+ if (LOCAL_LABELS_DOLLAR
+ && *input_line_pointer == '$'
+ && *(input_line_pointer + 1) == ':')
+ {
+ input_line_pointer += 2;
+
+ if (dollar_label_defined (temp))
+ {
+ as_fatal (_("label \"%d$\" redefined"), temp);
+ }
+
+ define_dollar_label (temp);
+ colon (dollar_label_name (temp, 0));
+ continue;
+ }
+
+ if (LOCAL_LABELS_FB
+ && *input_line_pointer++ == ':')
+ {
+ fb_label_instance_inc (temp);
+ colon (fb_label_name (temp, 0));
+ continue;
+ }
+
+ input_line_pointer = backup;
+ } /* local label ("4:") */
+
+ if (c && strchr (line_comment_chars, c))
+ { /* Its a comment. Better say APP or NO_APP. */
+ sb sbuf;
+ char *ends;
+ char *new_buf;
+ char *new_tmp;
+ unsigned int new_length;
+ char *tmp_buf = 0;
+
+ bump_line_counters ();
+ s = input_line_pointer;
+ if (strncmp (s, "APP\n", 4))
+ continue; /* We ignore it */
+ s += 4;
+
+ sb_new (&sbuf);
+ ends = strstr (s, "#NO_APP\n");
+
+ if (!ends)
+ {
+ unsigned int tmp_len;
+ unsigned int num;
+
+ /* The end of the #APP wasn't in this buffer. We
+ keep reading in buffers until we find the #NO_APP
+ that goes with this #APP There is one. The specs
+ guarentee it... */
+ tmp_len = buffer_limit - s;
+ tmp_buf = xmalloc (tmp_len + 1);
+ memcpy (tmp_buf, s, tmp_len);
+ do
+ {
+ new_tmp = input_scrub_next_buffer (&buffer);
+ if (!new_tmp)
+ break;
+ else
+ buffer_limit = new_tmp;
+ input_line_pointer = buffer;
+ ends = strstr (buffer, "#NO_APP\n");
+ if (ends)
+ num = ends - buffer;
+ else
+ num = buffer_limit - buffer;
+
+ tmp_buf = xrealloc (tmp_buf, tmp_len + num);
+ memcpy (tmp_buf + tmp_len, buffer, num);
+ tmp_len += num;
+ }
+ while (!ends);
+
+ input_line_pointer = ends ? ends + 8 : NULL;
+
+ s = tmp_buf;
+ ends = s + tmp_len;
+
+ }
+ else
+ {
+ input_line_pointer = ends + 8;
+ }
+
+ scrub_string = s;
+ scrub_string_end = ends;
+
+ new_length = ends - s;
+ new_buf = (char *) xmalloc (new_length);
+ new_tmp = new_buf;
+ for (;;)
+ {
+ int space;
+ int size;
+
+ space = (new_buf + new_length) - new_tmp;
+ size = do_scrub_chars (scrub_from_string, new_tmp, space);
+
+ if (size < space)
+ {
+ new_tmp[size] = 0;
+ break;
+ }
+
+ new_buf = xrealloc (new_buf, new_length + 100);
+ new_tmp = new_buf + new_length;
+ new_length += 100;
+ }
+
+ if (tmp_buf)
+ free (tmp_buf);
+
+ /* We've "scrubbed" input to the preferred format. In the
+ process we may have consumed the whole of the remaining
+ file (and included files). We handle this formatted
+ input similar to that of macro expansion, letting
+ actual macro expansion (possibly nested) and other
+ input expansion work. Beware that in messages, line
+ numbers and possibly file names will be incorrect. */
+ sb_add_string (&sbuf, new_buf);
+ input_scrub_include_sb (&sbuf, input_line_pointer, 0);
+ sb_kill (&sbuf);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+ free (new_buf);
+ continue;
+ }
+
+ HANDLE_CONDITIONAL_ASSEMBLY ();
+
+#ifdef tc_unrecognized_line
+ if (tc_unrecognized_line (c))
+ continue;
+#endif
+ input_line_pointer--;
+ /* Report unknown char as ignored. */
+ ignore_rest_of_line ();
+ }
+
+#ifdef md_after_pass_hook
+ md_after_pass_hook ();
+#endif
+ }
+
+ quit:
+
+#ifdef md_cleanup
+ md_cleanup ();
+#endif
+ /* Close the input file. */
+ input_scrub_close ();
+#ifdef WARN_COMMENTS
+ {
+ if (warn_comment && found_comment)
+ as_warn_where (found_comment_file, found_comment,
+ "first comment found here");
+ }
+#endif
+}
+
+/* For most MRI pseudo-ops, the line actually ends at the first
+ nonquoted space. This function looks for that point, stuffs a null
+ in, and sets *STOPCP to the character that used to be there, and
+ returns the location.
+
+ Until I hear otherwise, I am going to assume that this is only true
+ for the m68k MRI assembler. */
+
+char *
+mri_comment_field (stopcp)
+ char *stopcp;
+{
+ char *s;
+#ifdef TC_M68K
+ int inquote = 0;
+
+ know (flag_m68k_mri);
+
+ for (s = input_line_pointer;
+ ((!is_end_of_line[(unsigned char) *s] && *s != ' ' && *s != '\t')
+ || inquote);
+ s++)
+ {
+ if (*s == '\'')
+ inquote = !inquote;
+ }
+#else
+ for (s = input_line_pointer;
+ !is_end_of_line[(unsigned char) *s];
+ s++)
+ ;
+#endif
+ *stopcp = *s;
+ *s = '\0';
+
+ return s;
+}
+
+/* Skip to the end of an MRI comment field. */
+
+void
+mri_comment_end (stop, stopc)
+ char *stop;
+ int stopc;
+{
+ know (flag_mri);
+
+ input_line_pointer = stop;
+ *stop = stopc;
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+}
+
+void
+s_abort (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ as_fatal (_(".abort detected. Abandoning ship."));
+}
+
+/* Guts of .align directive. N is the power of two to which to align.
+ FILL may be NULL, or it may point to the bytes of the fill pattern.
+ LEN is the length of whatever FILL points to, if anything. MAX is
+ the maximum number of characters to skip when doing the alignment,
+ or 0 if there is no maximum. */
+
+static void
+do_align (n, fill, len, max)
+ int n;
+ char *fill;
+ int len;
+ int max;
+{
+ if (now_seg == absolute_section)
+ {
+ if (fill != NULL)
+ while (len-- > 0)
+ if (*fill++ != '\0')
+ {
+ as_warn (_("ignoring fill value in absolute section"));
+ break;
+ }
+ fill = NULL;
+ len = 0;
+ }
+
+#ifdef md_do_align
+ md_do_align (n, fill, len, max, just_record_alignment);
+#endif
+
+ /* Only make a frag if we HAVE to... */
+ if (n != 0 && !need_pass_2)
+ {
+ if (fill == NULL)
+ {
+ if (subseg_text_p (now_seg))
+ frag_align_code (n, max);
+ else
+ frag_align (n, 0, max);
+ }
+ else if (len <= 1)
+ frag_align (n, *fill, max);
+ else
+ frag_align_pattern (n, fill, len, max);
+ }
+
+#ifdef md_do_align
+ just_record_alignment: ATTRIBUTE_UNUSED_LABEL
+#endif
+
+ record_alignment (now_seg, n - OCTETS_PER_BYTE_POWER);
+}
+
+/* Handle the .align pseudo-op. A positive ARG is a default alignment
+ (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. */
+
+static void
+s_align (arg, bytes_p)
+ int arg;
+ int bytes_p;
+{
+ register unsigned int align;
+ char *stop = NULL;
+ char stopc;
+ offsetT fill = 0;
+ int max;
+ int fill_p;
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+
+ if (is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ if (arg < 0)
+ align = 0;
+ else
+ align = arg; /* Default value from pseudo-op table. */
+ }
+ else
+ {
+ align = get_absolute_expression ();
+ SKIP_WHITESPACE ();
+ }
+
+ if (bytes_p)
+ {
+ /* Convert to a power of 2. */
+ if (align != 0)
+ {
+ unsigned int i;
+
+ for (i = 0; (align & 1) == 0; align >>= 1, ++i)
+ ;
+ if (align != 1)
+ as_bad (_("alignment not a power of 2"));
+
+ align = i;
+ }
+ }
+
+ if (align > 15)
+ {
+ align = 15;
+ as_warn (_("alignment too large: %u assumed"), align);
+ }
+
+ if (*input_line_pointer != ',')
+ {
+ fill_p = 0;
+ max = 0;
+ }
+ else
+ {
+ ++input_line_pointer;
+ if (*input_line_pointer == ',')
+ fill_p = 0;
+ else
+ {
+ fill = get_absolute_expression ();
+ SKIP_WHITESPACE ();
+ fill_p = 1;
+ }
+
+ if (*input_line_pointer != ',')
+ max = 0;
+ else
+ {
+ ++input_line_pointer;
+ max = get_absolute_expression ();
+ }
+ }
+
+ if (!fill_p)
+ {
+ if (arg < 0)
+ as_warn (_("expected fill pattern missing"));
+ do_align (align, (char *) NULL, 0, max);
+ }
+ else
+ {
+ int fill_len;
+
+ if (arg >= 0)
+ fill_len = 1;
+ else
+ fill_len = -arg;
+ if (fill_len <= 1)
+ {
+ char fill_char;
+
+ fill_char = fill;
+ do_align (align, &fill_char, fill_len, max);
+ }
+ else
+ {
+ char ab[16];
+
+ if ((size_t) fill_len > sizeof ab)
+ abort ();
+ md_number_to_chars (ab, fill, fill_len);
+ do_align (align, ab, fill_len, max);
+ }
+ }
+
+ demand_empty_rest_of_line ();
+
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+}
+
+/* Handle the .align pseudo-op on machines where ".align 4" means
+ align to a 4 byte boundary. */
+
+void
+s_align_bytes (arg)
+ int arg;
+{
+ s_align (arg, 1);
+}
+
+/* Handle the .align pseudo-op on machines where ".align 4" means align
+ to a 2**4 boundary. */
+
+void
+s_align_ptwo (arg)
+ int arg;
+{
+ s_align (arg, 0);
+}
+
+void
+s_comm (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ register char *name;
+ register char c;
+ register char *p;
+ offsetT temp;
+ register symbolS *symbolP;
+ char *stop = NULL;
+ char stopc;
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+
+ name = input_line_pointer;
+ c = get_symbol_end ();
+ /* Just after name is now '\0'. */
+ p = input_line_pointer;
+ *p = c;
+
+ if (name == p)
+ {
+ as_bad (_("expected symbol name"));
+ discard_rest_of_line ();
+ return;
+ }
+
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer != ',')
+ {
+ *p = 0;
+ as_bad (_("expected comma after \"%s\""), name);
+ *p = c;
+ ignore_rest_of_line ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+ return;
+ }
+
+ input_line_pointer++; /* skip ',' */
+
+ if ((temp = get_absolute_expression ()) < 0)
+ {
+ as_warn (_(".COMMon length (%ld) < 0 ignored"), (long) temp);
+ ignore_rest_of_line ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+ return;
+ }
+
+ *p = 0;
+ symbolP = symbol_find_or_make (name);
+ *p = c;
+
+ if (S_IS_DEFINED (symbolP) && !S_IS_COMMON (symbolP))
+ {
+ as_bad (_("symbol `%s' is already defined"),
+ S_GET_NAME (symbolP));
+ ignore_rest_of_line ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+ return;
+ }
+
+ if (S_GET_VALUE (symbolP))
+ {
+ if (S_GET_VALUE (symbolP) != (valueT) temp)
+ as_bad (_("length of .comm \"%s\" is already %ld; not changing to %ld"),
+ S_GET_NAME (symbolP),
+ (long) S_GET_VALUE (symbolP),
+ (long) temp);
+ }
+ else
+ {
+ S_SET_VALUE (symbolP, (valueT) temp);
+ S_SET_EXTERNAL (symbolP);
+ }
+#ifdef OBJ_VMS
+ {
+ extern int flag_one;
+ if (!temp || !flag_one)
+ S_GET_OTHER(symbolP) = const_flag;
+ }
+#endif /* not OBJ_VMS */
+ know (symbolP->sy_frag == &zero_address_frag);
+
+ demand_empty_rest_of_line ();
+
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+} /* s_comm() */
+
+/* The MRI COMMON pseudo-op. We handle this by creating a common
+ symbol with the appropriate name. We make s_space do the right
+ thing by increasing the size. */
+
+void
+s_mri_common (small)
+ int small ATTRIBUTE_UNUSED;
+{
+ char *name;
+ char c;
+ char *alc = NULL;
+ symbolS *sym;
+ offsetT align;
+ char *stop = NULL;
+ char stopc;
+
+ if (!flag_mri)
+ {
+ s_comm (0);
+ return;
+ }
+
+ stop = mri_comment_field (&stopc);
+
+ SKIP_WHITESPACE ();
+
+ name = input_line_pointer;
+ if (!ISDIGIT (*name))
+ c = get_symbol_end ();
+ else
+ {
+ do
+ {
+ ++input_line_pointer;
+ }
+ while (ISDIGIT (*input_line_pointer));
+
+ c = *input_line_pointer;
+ *input_line_pointer = '\0';
+
+ if (line_label != NULL)
+ {
+ alc = (char *) xmalloc (strlen (S_GET_NAME (line_label))
+ + (input_line_pointer - name)
+ + 1);
+ sprintf (alc, "%s%s", name, S_GET_NAME (line_label));
+ name = alc;
+ }
+ }
+
+ sym = symbol_find_or_make (name);
+ *input_line_pointer = c;
+ if (alc != NULL)
+ free (alc);
+
+ if (*input_line_pointer != ',')
+ align = 0;
+ else
+ {
+ ++input_line_pointer;
+ align = get_absolute_expression ();
+ }
+
+ if (S_IS_DEFINED (sym) && !S_IS_COMMON (sym))
+ {
+ as_bad (_("symbol `%s' is already defined"), S_GET_NAME (sym));
+ ignore_rest_of_line ();
+ mri_comment_end (stop, stopc);
+ return;
+ }
+
+ S_SET_EXTERNAL (sym);
+ mri_common_symbol = sym;
+
+#ifdef S_SET_ALIGN
+ if (align != 0)
+ S_SET_ALIGN (sym, align);
+#endif
+
+ if (line_label != NULL)
+ {
+ expressionS exp;
+ exp.X_op = O_symbol;
+ exp.X_add_symbol = sym;
+ exp.X_add_number = 0;
+ symbol_set_value_expression (line_label, &exp);
+ symbol_set_frag (line_label, &zero_address_frag);
+ S_SET_SEGMENT (line_label, expr_section);
+ }
+
+ /* FIXME: We just ignore the small argument, which distinguishes
+ COMMON and COMMON.S. I don't know what we can do about it. */
+
+ /* Ignore the type and hptype. */
+ if (*input_line_pointer == ',')
+ input_line_pointer += 2;
+ if (*input_line_pointer == ',')
+ input_line_pointer += 2;
+
+ demand_empty_rest_of_line ();
+
+ mri_comment_end (stop, stopc);
+}
+
+void
+s_data (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ segT section;
+ register int temp;
+
+ temp = get_absolute_expression ();
+ if (flag_readonly_data_in_text)
+ {
+ section = text_section;
+ temp += 1000;
+ }
+ else
+ section = data_section;
+
+ subseg_set (section, (subsegT) temp);
+
+#ifdef OBJ_VMS
+ const_flag = 0;
+#endif
+ demand_empty_rest_of_line ();
+}
+
+/* Handle the .appfile pseudo-op. This is automatically generated by
+ do_scrub_chars when a preprocessor # line comment is seen with a
+ file name. This default definition may be overridden by the object
+ or CPU specific pseudo-ops. This function is also the default
+ definition for .file; the APPFILE argument is 1 for .appfile, 0 for
+ .file. */
+
+void
+s_app_file_string (file)
+ char *file;
+{
+#ifdef LISTING
+ if (listing)
+ listing_source_file (file);
+#endif
+ register_dependency (file);
+#ifdef obj_app_file
+ obj_app_file (file);
+#endif
+}
+
+void
+s_app_file (appfile)
+ int appfile;
+{
+ register char *s;
+ int length;
+
+ /* Some assemblers tolerate immediately following '"'. */
+ if ((s = demand_copy_string (&length)) != 0)
+ {
+ /* If this is a fake .appfile, a fake newline was inserted into
+ the buffer. Passing -2 to new_logical_line tells it to
+ account for it. */
+ int may_omit
+ = (!new_logical_line (s, appfile ? -2 : -1) && appfile);
+
+ /* In MRI mode, the preprocessor may have inserted an extraneous
+ backquote. */
+ if (flag_m68k_mri
+ && *input_line_pointer == '\''
+ && is_end_of_line[(unsigned char) input_line_pointer[1]])
+ ++input_line_pointer;
+
+ demand_empty_rest_of_line ();
+ if (!may_omit)
+ s_app_file_string (s);
+ }
+}
+
+/* Handle the .appline pseudo-op. This is automatically generated by
+ do_scrub_chars when a preprocessor # line comment is seen. This
+ default definition may be overridden by the object or CPU specific
+ pseudo-ops. */
+
+void
+s_app_line (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ int l;
+
+ /* The given number is that of the next line. */
+ l = get_absolute_expression () - 1;
+ if (l < 0)
+ /* Some of the back ends can't deal with non-positive line numbers.
+ Besides, it's silly. */
+ as_warn (_("line numbers must be positive; line number %d rejected"),
+ l + 1);
+ else
+ {
+ new_logical_line ((char *) NULL, l);
+#ifdef LISTING
+ if (listing)
+ listing_source_line (l);
+#endif
+ }
+ demand_empty_rest_of_line ();
+}
+
+/* Handle the .end pseudo-op. Actually, the real work is done in
+ read_a_source_file. */
+
+void
+s_end (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ if (flag_mri)
+ {
+ /* The MRI assembler permits the start symbol to follow .end,
+ but we don't support that. */
+ SKIP_WHITESPACE ();
+ if (!is_end_of_line[(unsigned char) *input_line_pointer]
+ && *input_line_pointer != '*'
+ && *input_line_pointer != '!')
+ as_warn (_("start address not supported"));
+ }
+}
+
+/* Handle the .err pseudo-op. */
+
+void
+s_err (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ as_bad (_(".err encountered"));
+ demand_empty_rest_of_line ();
+}
+
+/* Handle the MRI fail pseudo-op. */
+
+void
+s_fail (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ offsetT temp;
+ char *stop = NULL;
+ char stopc;
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+
+ temp = get_absolute_expression ();
+ if (temp >= 500)
+ as_warn (_(".fail %ld encountered"), (long) temp);
+ else
+ as_bad (_(".fail %ld encountered"), (long) temp);
+
+ demand_empty_rest_of_line ();
+
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+}
+
+void
+s_fill (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ expressionS rep_exp;
+ long size = 1;
+ register long fill = 0;
+ char *p;
+
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
+ get_known_segmented_expression (&rep_exp);
+ if (*input_line_pointer == ',')
+ {
+ input_line_pointer++;
+ size = get_absolute_expression ();
+ if (*input_line_pointer == ',')
+ {
+ input_line_pointer++;
+ fill = get_absolute_expression ();
+ }
+ }
+
+ /* This is to be compatible with BSD 4.2 AS, not for any rational reason. */
+#define BSD_FILL_SIZE_CROCK_8 (8)
+ if (size > BSD_FILL_SIZE_CROCK_8)
+ {
+ as_warn (_(".fill size clamped to %d"), BSD_FILL_SIZE_CROCK_8);
+ size = BSD_FILL_SIZE_CROCK_8;
+ }
+ if (size < 0)
+ {
+ as_warn (_("size negative; .fill ignored"));
+ size = 0;
+ }
+ else if (rep_exp.X_op == O_constant && rep_exp.X_add_number <= 0)
+ {
+ if (rep_exp.X_add_number < 0)
+ as_warn (_("repeat < 0; .fill ignored"));
+ size = 0;
+ }
+
+ if (size && !need_pass_2)
+ {
+ if (rep_exp.X_op == O_constant)
+ {
+ p = frag_var (rs_fill, (int) size, (int) size,
+ (relax_substateT) 0, (symbolS *) 0,
+ (offsetT) rep_exp.X_add_number,
+ (char *) 0);
+ }
+ else
+ {
+ /* We don't have a constant repeat count, so we can't use
+ rs_fill. We can get the same results out of rs_space,
+ but its argument is in bytes, so we must multiply the
+ repeat count by size. */
+
+ symbolS *rep_sym;
+ rep_sym = make_expr_symbol (&rep_exp);
+ if (size != 1)
+ {
+ expressionS size_exp;
+ size_exp.X_op = O_constant;
+ size_exp.X_add_number = size;
+
+ rep_exp.X_op = O_multiply;
+ rep_exp.X_add_symbol = rep_sym;
+ rep_exp.X_op_symbol = make_expr_symbol (&size_exp);
+ rep_exp.X_add_number = 0;
+ rep_sym = make_expr_symbol (&rep_exp);
+ }
+
+ p = frag_var (rs_space, (int) size, (int) size,
+ (relax_substateT) 0, rep_sym, (offsetT) 0, (char *) 0);
+ }
+
+ memset (p, 0, (unsigned int) size);
+
+ /* The magic number BSD_FILL_SIZE_CROCK_4 is from BSD 4.2 VAX
+ flavoured AS. The following bizarre behaviour is to be
+ compatible with above. I guess they tried to take up to 8
+ bytes from a 4-byte expression and they forgot to sign
+ extend. */
+#define BSD_FILL_SIZE_CROCK_4 (4)
+ md_number_to_chars (p, (valueT) fill,
+ (size > BSD_FILL_SIZE_CROCK_4
+ ? BSD_FILL_SIZE_CROCK_4
+ : (int) size));
+ /* Note: .fill (),0 emits no frag (since we are asked to .fill 0 bytes)
+ but emits no error message because it seems a legal thing to do.
+ It is a degenerate case of .fill but could be emitted by a
+ compiler. */
+ }
+ demand_empty_rest_of_line ();
+}
+
+void
+s_globl (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ char *name;
+ int c;
+ symbolS *symbolP;
+ char *stop = NULL;
+ char stopc;
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+
+ do
+ {
+ name = input_line_pointer;
+ c = get_symbol_end ();
+ symbolP = symbol_find_or_make (name);
+ S_SET_EXTERNAL (symbolP);
+
+ *input_line_pointer = c;
+ SKIP_WHITESPACE ();
+ c = *input_line_pointer;
+ if (c == ',')
+ {
+ input_line_pointer++;
+ SKIP_WHITESPACE ();
+ if (is_end_of_line[(unsigned char) *input_line_pointer])
+ c = '\n';
+ }
+ }
+ while (c == ',');
+
+ demand_empty_rest_of_line ();
+
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+}
+
+/* Handle the MRI IRP and IRPC pseudo-ops. */
+
+void
+s_irp (irpc)
+ int irpc;
+{
+ char *file;
+ unsigned int line;
+ sb s;
+ const char *err;
+ sb out;
+
+ as_where (&file, &line);
+
+ sb_new (&s);
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
+ sb_add_char (&s, *input_line_pointer++);
+
+ sb_new (&out);
+
+ err = expand_irp (irpc, 0, &s, &out, get_line_sb);
+ if (err != NULL)
+ as_bad_where (file, line, "%s", err);
+
+ sb_kill (&s);
+
+ input_scrub_include_sb (&out, input_line_pointer, 1);
+ sb_kill (&out);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
+
+/* Handle the .linkonce pseudo-op. This tells the assembler to mark
+ the section to only be linked once. However, this is not supported
+ by most object file formats. This takes an optional argument,
+ which is what to do about duplicates. */
+
+void
+s_linkonce (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ enum linkonce_type type;
+
+ SKIP_WHITESPACE ();
+
+ type = LINKONCE_DISCARD;
+
+ if (!is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ char *s;
+ char c;
+
+ s = input_line_pointer;
+ c = get_symbol_end ();
+ if (strcasecmp (s, "discard") == 0)
+ type = LINKONCE_DISCARD;
+ else if (strcasecmp (s, "one_only") == 0)
+ type = LINKONCE_ONE_ONLY;
+ else if (strcasecmp (s, "same_size") == 0)
+ type = LINKONCE_SAME_SIZE;
+ else if (strcasecmp (s, "same_contents") == 0)
+ type = LINKONCE_SAME_CONTENTS;
+ else
+ as_warn (_("unrecognized .linkonce type `%s'"), s);
+
+ *input_line_pointer = c;
+ }
+
+#ifdef obj_handle_link_once
+ obj_handle_link_once (type);
+#else /* ! defined (obj_handle_link_once) */
+#ifdef BFD_ASSEMBLER
+ {
+ flagword flags;
+
+ if ((bfd_applicable_section_flags (stdoutput) & SEC_LINK_ONCE) == 0)
+ as_warn (_(".linkonce is not supported for this object file format"));
+
+ flags = bfd_get_section_flags (stdoutput, now_seg);
+ flags |= SEC_LINK_ONCE;
+ switch (type)
+ {
+ default:
+ abort ();
+ case LINKONCE_DISCARD:
+ flags |= SEC_LINK_DUPLICATES_DISCARD;
+ break;
+ case LINKONCE_ONE_ONLY:
+ flags |= SEC_LINK_DUPLICATES_ONE_ONLY;
+ break;
+ case LINKONCE_SAME_SIZE:
+ flags |= SEC_LINK_DUPLICATES_SAME_SIZE;
+ break;
+ case LINKONCE_SAME_CONTENTS:
+ flags |= SEC_LINK_DUPLICATES_SAME_CONTENTS;
+ break;
+ }
+ if (!bfd_set_section_flags (stdoutput, now_seg, flags))
+ as_bad (_("bfd_set_section_flags: %s"),
+ bfd_errmsg (bfd_get_error ()));
+ }
+#else /* ! defined (BFD_ASSEMBLER) */
+ as_warn (_(".linkonce is not supported for this object file format"));
+#endif /* ! defined (BFD_ASSEMBLER) */
+#endif /* ! defined (obj_handle_link_once) */
+
+ demand_empty_rest_of_line ();
+}
+
+static void
+s_lcomm_internal (needs_align, bytes_p)
+ /* 1 if this was a ".bss" directive, which may require a 3rd argument
+ (alignment); 0 if it was an ".lcomm" (2 args only). */
+ int needs_align;
+ /* 1 if the alignment value should be interpreted as the byte boundary,
+ rather than the power of 2. */
+ int bytes_p;
+{
+ register char *name;
+ register char c;
+ register char *p;
+ register int temp;
+ register symbolS *symbolP;
+ segT current_seg = now_seg;
+ subsegT current_subseg = now_subseg;
+ const int max_alignment = 15;
+ int align = 0;
+ segT bss_seg = bss_section;
+
+ name = input_line_pointer;
+ c = get_symbol_end ();
+ p = input_line_pointer;
+ *p = c;
+
+ if (name == p)
+ {
+ as_bad (_("expected symbol name"));
+ discard_rest_of_line ();
+ return;
+ }
+
+ SKIP_WHITESPACE ();
+
+ /* Accept an optional comma after the name. The comma used to be
+ required, but Irix 5 cc does not generate it. */
+ if (*input_line_pointer == ',')
+ {
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
+ }
+
+ if (is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ as_bad (_("missing size expression"));
+ return;
+ }
+
+ if ((temp = get_absolute_expression ()) < 0)
+ {
+ as_warn (_("BSS length (%d) < 0 ignored"), temp);
+ ignore_rest_of_line ();
+ return;
+ }
+
+#if defined (TC_MIPS) || defined (TC_ALPHA)
+ if (OUTPUT_FLAVOR == bfd_target_ecoff_flavour
+ || OUTPUT_FLAVOR == bfd_target_elf_flavour)
+ {
+ /* For MIPS and Alpha ECOFF or ELF, small objects are put in .sbss. */
+ if ((unsigned) temp <= bfd_get_gp_size (stdoutput))
+ {
+ bss_seg = subseg_new (".sbss", 1);
+ seg_info (bss_seg)->bss = 1;
+#ifdef BFD_ASSEMBLER
+ if (!bfd_set_section_flags (stdoutput, bss_seg, SEC_ALLOC))
+ as_warn (_("error setting flags for \".sbss\": %s"),
+ bfd_errmsg (bfd_get_error ()));
+#endif
+ }
+ }
+#endif
+
+ if (!needs_align)
+ {
+ TC_IMPLICIT_LCOMM_ALIGNMENT (temp, align);
+
+ /* Still zero unless TC_IMPLICIT_LCOMM_ALIGNMENT set it. */
+ if (align)
+ record_alignment (bss_seg, align);
+ }
+
+ if (needs_align)
+ {
+ align = 0;
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer != ',')
+ {
+ as_bad (_("expected comma after size"));
+ ignore_rest_of_line ();
+ return;
+ }
+
+ input_line_pointer++;
+ SKIP_WHITESPACE ();
+
+ if (is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ as_bad (_("missing alignment"));
+ return;
+ }
+
+ align = get_absolute_expression ();
+
+ if (bytes_p)
+ {
+ /* Convert to a power of 2. */
+ if (align != 0)
+ {
+ unsigned int i;
+
+ for (i = 0; (align & 1) == 0; align >>= 1, ++i)
+ ;
+ if (align != 1)
+ as_bad (_("alignment not a power of 2"));
+ align = i;
+ }
+ }
+
+ if (align > max_alignment)
+ {
+ align = max_alignment;
+ as_warn (_("alignment too large; %d assumed"), align);
+ }
+ else if (align < 0)
+ {
+ align = 0;
+ as_warn (_("alignment negative; 0 assumed"));
+ }
+
+ record_alignment (bss_seg, align);
+ }
+ else
+ {
+ /* Assume some objects may require alignment on some systems. */
+#if defined (TC_ALPHA) && ! defined (VMS)
+ if (temp > 1)
+ {
+ align = ffs (temp) - 1;
+ if (temp % (1 << align))
+ abort ();
+ }
+#endif
+ }
+
+ *p = 0;
+ symbolP = symbol_find_or_make (name);
+ *p = c;
+
+ if (
+#if (defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) \
+ || defined (OBJ_BOUT) || defined (OBJ_MAYBE_BOUT))
+#ifdef BFD_ASSEMBLER
+ (OUTPUT_FLAVOR != bfd_target_aout_flavour
+ || (S_GET_OTHER (symbolP) == 0 && S_GET_DESC (symbolP) == 0)) &&
+#else
+ (S_GET_OTHER (symbolP) == 0 && S_GET_DESC (symbolP) == 0) &&
+#endif
+#endif
+ (S_GET_SEGMENT (symbolP) == bss_seg
+ || (!S_IS_DEFINED (symbolP) && S_GET_VALUE (symbolP) == 0)))
+ {
+ char *pfrag;
+
+ subseg_set (bss_seg, 1);
+
+ if (align)
+ frag_align (align, 0, 0);
+
+ /* Detach from old frag. */
+ if (S_GET_SEGMENT (symbolP) == bss_seg)
+ symbol_get_frag (symbolP)->fr_symbol = NULL;
+
+ symbol_set_frag (symbolP, frag_now);
+ pfrag = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP,
+ (offsetT) temp, (char *) 0);
+ *pfrag = 0;
+
+ S_SET_SEGMENT (symbolP, bss_seg);
+
+#ifdef OBJ_COFF
+ /* The symbol may already have been created with a preceding
+ ".globl" directive -- be careful not to step on storage class
+ in that case. Otherwise, set it to static. */
+ if (S_GET_STORAGE_CLASS (symbolP) != C_EXT)
+ {
+ S_SET_STORAGE_CLASS (symbolP, C_STAT);
+ }
+#endif /* OBJ_COFF */
+
+#ifdef S_SET_SIZE
+ S_SET_SIZE (symbolP, temp);
+#endif
+ }
+ else
+ as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP));
+
+ subseg_set (current_seg, current_subseg);
+
+ demand_empty_rest_of_line ();
+}
+
+void
+s_lcomm (needs_align)
+ int needs_align;
+{
+ s_lcomm_internal (needs_align, 0);
+}
+
+void
+s_lcomm_bytes (needs_align)
+ int needs_align;
+{
+ s_lcomm_internal (needs_align, 1);
+}
+
+void
+s_lsym (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ register char *name;
+ register char c;
+ register char *p;
+ expressionS exp;
+ register symbolS *symbolP;
+
+ /* We permit ANY defined expression: BSD4.2 demands constants. */
+ name = input_line_pointer;
+ c = get_symbol_end ();
+ p = input_line_pointer;
+ *p = c;
+
+ if (name == p)
+ {
+ as_bad (_("expected symbol name"));
+ discard_rest_of_line ();
+ return;
+ }
+
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer != ',')
+ {
+ *p = 0;
+ as_bad (_("expected comma after \"%s\""), name);
+ *p = c;
+ ignore_rest_of_line ();
+ return;
+ }
+
+ input_line_pointer++;
+ expression (&exp);
+
+ if (exp.X_op != O_constant
+ && exp.X_op != O_register)
+ {
+ as_bad (_("bad expression"));
+ ignore_rest_of_line ();
+ return;
+ }
+
+ *p = 0;
+ symbolP = symbol_find_or_make (name);
+
+ /* FIXME-SOON I pulled a (&& symbolP->sy_other == 0 &&
+ symbolP->sy_desc == 0) out of this test because coff doesn't have
+ those fields, and I can't see when they'd ever be tripped. I
+ don't think I understand why they were here so I may have
+ introduced a bug. As recently as 1.37 didn't have this test
+ anyway. xoxorich. */
+
+ if (S_GET_SEGMENT (symbolP) == undefined_section
+ && S_GET_VALUE (symbolP) == 0)
+ {
+ /* The name might be an undefined .global symbol; be sure to
+ keep the "external" bit. */
+ S_SET_SEGMENT (symbolP,
+ (exp.X_op == O_constant
+ ? absolute_section
+ : reg_section));
+ S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
+ }
+ else
+ {
+ as_bad (_("symbol `%s' is already defined"), name);
+ }
+
+ *p = c;
+ demand_empty_rest_of_line ();
+}
+
+/* Read a line into an sb. Returns the character that ended the line
+ or zero if there are no more lines. */
+
+static int
+get_line_sb (line)
+ sb *line;
+{
+ char quote1, quote2, inquote;
+ unsigned char c;
+
+ if (input_line_pointer[-1] == '\n')
+ bump_line_counters ();
+
+ if (input_line_pointer >= buffer_limit)
+ {
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+ if (buffer_limit == 0)
+ return 0;
+ }
+
+ /* If app.c sets any other characters to LEX_IS_STRINGQUOTE, this
+ code needs to be changed. */
+ if (!flag_m68k_mri)
+ quote1 = '"';
+ else
+ quote1 = '\0';
+
+ quote2 = '\0';
+ if (flag_m68k_mri)
+ quote2 = '\'';
+#ifdef LEX_IS_STRINGQUOTE
+ quote2 = '\'';
+#endif
+
+ inquote = '\0';
+
+ while ((c = * input_line_pointer ++) != 0
+ && (!is_end_of_line[c]
+ || (inquote != '\0' && c != '\n')))
+ {
+ if (inquote == c)
+ inquote = '\0';
+ else if (inquote == '\0')
+ {
+ if (c == quote1)
+ inquote = quote1;
+ else if (c == quote2)
+ inquote = quote2;
+ }
+
+ sb_add_char (line, c);
+ }
+
+ /* Don't skip multiple end-of-line characters, because that breaks support
+ for the IA-64 stop bit (;;) which looks like two consecutive end-of-line
+ characters but isn't. Instead just skip one end of line character and
+ return the character skipped so that the caller can re-insert it if
+ necessary. */
+ return c;
+}
+
+/* Define a macro. This is an interface to macro.c. */
+
+void
+s_macro (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ char *file;
+ unsigned int line;
+ sb s;
+ sb label;
+ const char *err;
+ const char *name;
+
+ as_where (&file, &line);
+
+ sb_new (&s);
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
+ sb_add_char (&s, *input_line_pointer++);
+
+ sb_new (&label);
+ if (line_label != NULL)
+ sb_add_string (&label, S_GET_NAME (line_label));
+
+ err = define_macro (0, &s, &label, get_line_sb, &name);
+ if (err != NULL)
+ as_bad_where (file, line, "%s", err);
+ else
+ {
+ if (line_label != NULL)
+ {
+ S_SET_SEGMENT (line_label, undefined_section);
+ S_SET_VALUE (line_label, 0);
+ symbol_set_frag (line_label, &zero_address_frag);
+ }
+
+ if (((NO_PSEUDO_DOT || flag_m68k_mri)
+ && hash_find (po_hash, name) != NULL)
+ || (!flag_m68k_mri
+ && *name == '.'
+ && hash_find (po_hash, name + 1) != NULL))
+ as_warn (_("attempt to redefine pseudo-op `%s' ignored"),
+ name);
+ }
+
+ sb_kill (&s);
+}
+
+/* Handle the .mexit pseudo-op, which immediately exits a macro
+ expansion. */
+
+void
+s_mexit (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ cond_exit_macro (macro_nest);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
+
+/* Switch in and out of MRI mode. */
+
+void
+s_mri (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ int on, old_flag;
+
+ on = get_absolute_expression ();
+ old_flag = flag_mri;
+ if (on != 0)
+ {
+ flag_mri = 1;
+#ifdef TC_M68K
+ flag_m68k_mri = 1;
+#endif
+ macro_mri_mode (1);
+ }
+ else
+ {
+ flag_mri = 0;
+#ifdef TC_M68K
+ flag_m68k_mri = 0;
+#endif
+ macro_mri_mode (0);
+ }
+
+ /* Operator precedence changes in m68k MRI mode, so we need to
+ update the operator rankings. */
+ expr_set_precedence ();
+
+#ifdef MRI_MODE_CHANGE
+ if (on != old_flag)
+ MRI_MODE_CHANGE (on);
+#endif
+
+ demand_empty_rest_of_line ();
+}
+
+/* Handle changing the location counter. */
+
+static void
+do_org (segment, exp, fill)
+ segT segment;
+ expressionS *exp;
+ int fill;
+{
+ if (segment != now_seg && segment != absolute_section)
+ as_bad (_("invalid segment \"%s\""), segment_name (segment));
+
+ if (now_seg == absolute_section)
+ {
+ if (fill != 0)
+ as_warn (_("ignoring fill value in absolute section"));
+ if (exp->X_op != O_constant)
+ {
+ as_bad (_("only constant offsets supported in absolute section"));
+ exp->X_add_number = 0;
+ }
+ abs_section_offset = exp->X_add_number;
+ }
+ else
+ {
+ char *p;
+ symbolS *sym = exp->X_add_symbol;
+ offsetT off = exp->X_add_number * OCTETS_PER_BYTE;
+
+ if (exp->X_op != O_constant && exp->X_op != O_symbol)
+ {
+ /* Handle complex expressions. */
+ sym = make_expr_symbol (exp);
+ off = 0;
+ }
+
+ p = frag_var (rs_org, 1, 1, (relax_substateT) 0, sym, off, (char *) 0);
+ *p = fill;
+ }
+}
+
+void
+s_org (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ register segT segment;
+ expressionS exp;
+ register long temp_fill;
+
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
+ /* The m68k MRI assembler has a different meaning for .org. It
+ means to create an absolute section at a given address. We can't
+ support that--use a linker script instead. */
+ if (flag_m68k_mri)
+ {
+ as_bad (_("MRI style ORG pseudo-op not supported"));
+ ignore_rest_of_line ();
+ return;
+ }
+
+ /* Don't believe the documentation of BSD 4.2 AS. There is no such
+ thing as a sub-segment-relative origin. Any absolute origin is
+ given a warning, then assumed to be segment-relative. Any
+ segmented origin expression ("foo+42") had better be in the right
+ segment or the .org is ignored.
+
+ BSD 4.2 AS warns if you try to .org backwards. We cannot because
+ we never know sub-segment sizes when we are reading code. BSD
+ will crash trying to emit negative numbers of filler bytes in
+ certain .orgs. We don't crash, but see as-write for that code.
+
+ Don't make frag if need_pass_2==1. */
+ segment = get_known_segmented_expression (&exp);
+ if (*input_line_pointer == ',')
+ {
+ input_line_pointer++;
+ temp_fill = get_absolute_expression ();
+ }
+ else
+ temp_fill = 0;
+
+ if (!need_pass_2)
+ do_org (segment, &exp, temp_fill);
+
+ demand_empty_rest_of_line ();
+}
+
+/* Handle parsing for the MRI SECT/SECTION pseudo-op. This should be
+ called by the obj-format routine which handles section changing
+ when in MRI mode. It will create a new section, and return it. It
+ will set *TYPE to the section type: one of 'C' (code), 'D' (data),
+ 'M' (mixed), or 'R' (romable). If BFD_ASSEMBLER is defined, the
+ flags will be set in the section. */
+
+void
+s_mri_sect (type)
+ char *type ATTRIBUTE_UNUSED;
+{
+#ifdef TC_M68K
+
+ char *name;
+ char c;
+ segT seg;
+
+ SKIP_WHITESPACE ();
+
+ name = input_line_pointer;
+ if (!ISDIGIT (*name))
+ c = get_symbol_end ();
+ else
+ {
+ do
+ {
+ ++input_line_pointer;
+ }
+ while (ISDIGIT (*input_line_pointer));
+
+ c = *input_line_pointer;
+ *input_line_pointer = '\0';
+ }
+
+ name = xstrdup (name);
+
+ *input_line_pointer = c;
+
+ seg = subseg_new (name, 0);
+
+ if (*input_line_pointer == ',')
+ {
+ int align;
+
+ ++input_line_pointer;
+ align = get_absolute_expression ();
+ record_alignment (seg, align);
+ }
+
+ *type = 'C';
+ if (*input_line_pointer == ',')
+ {
+ c = *++input_line_pointer;
+ c = TOUPPER (c);
+ if (c == 'C' || c == 'D' || c == 'M' || c == 'R')
+ *type = c;
+ else
+ as_bad (_("unrecognized section type"));
+ ++input_line_pointer;
+
+#ifdef BFD_ASSEMBLER
+ {
+ flagword flags;
+
+ flags = SEC_NO_FLAGS;
+ if (*type == 'C')
+ flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE;
+ else if (*type == 'D' || *type == 'M')
+ flags = SEC_ALLOC | SEC_LOAD | SEC_DATA;
+ else if (*type == 'R')
+ flags = SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_READONLY | SEC_ROM;
+ if (flags != SEC_NO_FLAGS)
+ {
+ if (!bfd_set_section_flags (stdoutput, seg, flags))
+ as_warn (_("error setting flags for \"%s\": %s"),
+ bfd_section_name (stdoutput, seg),
+ bfd_errmsg (bfd_get_error ()));
+ }
+ }
+#endif
+ }
+
+ /* Ignore the HP type. */
+ if (*input_line_pointer == ',')
+ input_line_pointer += 2;
+
+ demand_empty_rest_of_line ();
+
+#else /* ! TC_M68K */
+#ifdef TC_I960
+
+ char *name;
+ char c;
+ segT seg;
+
+ SKIP_WHITESPACE ();
+
+ name = input_line_pointer;
+ c = get_symbol_end ();
+
+ name = xstrdup (name);
+
+ *input_line_pointer = c;
+
+ seg = subseg_new (name, 0);
+
+ if (*input_line_pointer != ',')
+ *type = 'C';
+ else
+ {
+ char *sectype;
+
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
+ sectype = input_line_pointer;
+ c = get_symbol_end ();
+ if (*sectype == '\0')
+ *type = 'C';
+ else if (strcasecmp (sectype, "text") == 0)
+ *type = 'C';
+ else if (strcasecmp (sectype, "data") == 0)
+ *type = 'D';
+ else if (strcasecmp (sectype, "romdata") == 0)
+ *type = 'R';
+ else
+ as_warn (_("unrecognized section type `%s'"), sectype);
+ *input_line_pointer = c;
+ }
+
+ if (*input_line_pointer == ',')
+ {
+ char *seccmd;
+
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
+ seccmd = input_line_pointer;
+ c = get_symbol_end ();
+ if (strcasecmp (seccmd, "absolute") == 0)
+ {
+ as_bad (_("absolute sections are not supported"));
+ *input_line_pointer = c;
+ ignore_rest_of_line ();
+ return;
+ }
+ else if (strcasecmp (seccmd, "align") == 0)
+ {
+ int align;
+
+ *input_line_pointer = c;
+ align = get_absolute_expression ();
+ record_alignment (seg, align);
+ }
+ else
+ {
+ as_warn (_("unrecognized section command `%s'"), seccmd);
+ *input_line_pointer = c;
+ }
+ }
+
+ demand_empty_rest_of_line ();
+
+#else /* ! TC_I960 */
+ /* The MRI assembler seems to use different forms of .sect for
+ different targets. */
+ as_bad ("MRI mode not supported for this target");
+ ignore_rest_of_line ();
+#endif /* ! TC_I960 */
+#endif /* ! TC_M68K */
+}
+
+/* Handle the .print pseudo-op. */
+
+void
+s_print (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ char *s;
+ int len;
+
+ s = demand_copy_C_string (&len);
+ printf ("%s\n", s);
+ demand_empty_rest_of_line ();
+}
+
+/* Handle the .purgem pseudo-op. */
+
+void
+s_purgem (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ if (is_it_end_of_statement ())
+ {
+ demand_empty_rest_of_line ();
+ return;
+ }
+
+ do
+ {
+ char *name;
+ char c;
+
+ SKIP_WHITESPACE ();
+ name = input_line_pointer;
+ c = get_symbol_end ();
+ delete_macro (name);
+ *input_line_pointer = c;
+ SKIP_WHITESPACE ();
+ }
+ while (*input_line_pointer++ == ',');
+
+ --input_line_pointer;
+ demand_empty_rest_of_line ();
+}
+
+/* Handle the .rept pseudo-op. */
+
+void
+s_bad_endr (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ as_warn (_(".endr encountered without preceeding .rept, .irc, or .irp"));
+ demand_empty_rest_of_line ();
+}
+
+/* Handle the .rept pseudo-op. */
+
+void
+s_rept (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ int count;
+
+ count = get_absolute_expression ();
+
+ do_repeat (count, "REPT", "ENDR");
+}
+
+/* This function provides a generic repeat block implementation. It allows
+ different directives to be used as the start/end keys. */
+
+void
+do_repeat (count, start, end)
+ int count;
+ const char *start;
+ const char *end;
+{
+ sb one;
+ sb many;
+
+ sb_new (&one);
+ if (!buffer_and_nest (start, end, &one, get_line_sb))
+ {
+ as_bad (_("%s without %s"), start, end);
+ return;
+ }
+
+ sb_new (&many);
+ while (count-- > 0)
+ sb_add_sb (&many, &one);
+
+ sb_kill (&one);
+
+ input_scrub_include_sb (&many, input_line_pointer, 1);
+ sb_kill (&many);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
+
+/* Skip to end of current repeat loop; EXTRA indicates how many additional
+ input buffers to skip. Assumes that conditionals preceding the loop end
+ are properly nested.
+
+ This function makes it easier to implement a premature "break" out of the
+ loop. The EXTRA arg accounts for other buffers we might have inserted,
+ such as line substitutions. */
+
+void
+end_repeat (extra)
+ int extra;
+{
+ cond_exit_macro (macro_nest);
+ while (extra-- >= 0)
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
+
+/* Handle the .equ, .equiv and .set directives. If EQUIV is 1, then
+ this is .equiv, and it is an error if the symbol is already
+ defined. */
+
+void
+s_set (equiv)
+ int equiv;
+{
+ register char *name;
+ register char delim;
+ register char *end_name;
+ register symbolS *symbolP;
+
+ /* Especial apologies for the random logic:
+ this just grew, and could be parsed much more simply!
+ Dean in haste. */
+ name = input_line_pointer;
+ delim = get_symbol_end ();
+ end_name = input_line_pointer;
+ *end_name = delim;
+
+ if (name == end_name)
+ {
+ as_bad (_("expected symbol name"));
+ discard_rest_of_line ();
+ return;
+ }
+
+ SKIP_WHITESPACE ();
+
+ if (*input_line_pointer != ',')
+ {
+ *end_name = 0;
+ as_bad (_("expected comma after \"%s\""), name);
+ *end_name = delim;
+ ignore_rest_of_line ();
+ return;
+ }
+
+ input_line_pointer++;
+ *end_name = 0;
+
+ if (name[0] == '.' && name[1] == '\0')
+ {
+ /* Turn '. = mumble' into a .org mumble. */
+ register segT segment;
+ expressionS exp;
+
+ segment = get_known_segmented_expression (&exp);
+
+ if (!need_pass_2)
+ do_org (segment, &exp, 0);
+
+ *end_name = delim;
+ return;
+ }
+
+ if ((symbolP = symbol_find (name)) == NULL
+ && (symbolP = md_undefined_symbol (name)) == NULL)
+ {
+#ifndef NO_LISTING
+ /* When doing symbol listings, play games with dummy fragments living
+ outside the normal fragment chain to record the file and line info
+ for this symbol. */
+ if (listing & LISTING_SYMBOLS)
+ {
+ extern struct list_info_struct *listing_tail;
+ fragS *dummy_frag = (fragS *) xmalloc (sizeof (fragS));
+ memset (dummy_frag, 0, sizeof (fragS));
+ dummy_frag->fr_type = rs_fill;
+ dummy_frag->line = listing_tail;
+ symbolP = symbol_new (name, undefined_section, 0, dummy_frag);
+ dummy_frag->fr_symbol = symbolP;
+ }
+ else
+#endif
+ symbolP = symbol_new (name, undefined_section, 0, &zero_address_frag);
+
+#ifdef OBJ_COFF
+ /* "set" symbols are local unless otherwise specified. */
+ SF_SET_LOCAL (symbolP);
+#endif /* OBJ_COFF */
+ }
+
+ symbol_table_insert (symbolP);
+
+ *end_name = delim;
+
+ if (equiv
+ && S_IS_DEFINED (symbolP)
+ && S_GET_SEGMENT (symbolP) != reg_section)
+ as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP));
+
+ pseudo_set (symbolP);
+ demand_empty_rest_of_line ();
+}
+
+void
+s_space (mult)
+ int mult;
+{
+ expressionS exp;
+ expressionS val;
+ char *p = 0;
+ char *stop = NULL;
+ char stopc;
+ int bytes;
+
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+
+ /* In m68k MRI mode, we need to align to a word boundary, unless
+ this is ds.b. */
+ if (flag_m68k_mri && mult > 1)
+ {
+ if (now_seg == absolute_section)
+ {
+ abs_section_offset += abs_section_offset & 1;
+ if (line_label != NULL)
+ S_SET_VALUE (line_label, abs_section_offset);
+ }
+ else if (mri_common_symbol != NULL)
+ {
+ valueT val;
+
+ val = S_GET_VALUE (mri_common_symbol);
+ if ((val & 1) != 0)
+ {
+ S_SET_VALUE (mri_common_symbol, val + 1);
+ if (line_label != NULL)
+ {
+ expressionS *symexp;
+
+ symexp = symbol_get_value_expression (line_label);
+ know (symexp->X_op == O_symbol);
+ know (symexp->X_add_symbol == mri_common_symbol);
+ symexp->X_add_number += 1;
+ }
+ }
+ }
+ else
+ {
+ do_align (1, (char *) NULL, 0, 0);
+ if (line_label != NULL)
+ {
+ symbol_set_frag (line_label, frag_now);
+ S_SET_VALUE (line_label, frag_now_fix ());
+ }
+ }
+ }
+
+ bytes = mult;
+
+ expression (&exp);
+
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == ',')
+ {
+ ++input_line_pointer;
+ expression (&val);
+ }
+ else
+ {
+ val.X_op = O_constant;
+ val.X_add_number = 0;
+ }
+
+ if (val.X_op != O_constant
+ || val.X_add_number < - 0x80
+ || val.X_add_number > 0xff
+ || (mult != 0 && mult != 1 && val.X_add_number != 0))
+ {
+ if (exp.X_op != O_constant)
+ as_bad (_("unsupported variable size or fill value"));
+ else
+ {
+ offsetT i;
+
+ if (mult == 0)
+ mult = 1;
+ bytes = mult * exp.X_add_number;
+ for (i = 0; i < exp.X_add_number; i++)
+ emit_expr (&val, mult);
+ }
+ }
+ else
+ {
+ if (exp.X_op == O_constant)
+ {
+ long repeat;
+
+ repeat = exp.X_add_number;
+ if (mult)
+ repeat *= mult;
+ bytes = repeat;
+ if (repeat <= 0)
+ {
+ if (!flag_mri)
+ as_warn (_(".space repeat count is zero, ignored"));
+ else if (repeat < 0)
+ as_warn (_(".space repeat count is negative, ignored"));
+ goto getout;
+ }
+
+ /* If we are in the absolute section, just bump the offset. */
+ if (now_seg == absolute_section)
+ {
+ abs_section_offset += repeat;
+ goto getout;
+ }
+
+ /* If we are secretly in an MRI common section, then
+ creating space just increases the size of the common
+ symbol. */
+ if (mri_common_symbol != NULL)
+ {
+ S_SET_VALUE (mri_common_symbol,
+ S_GET_VALUE (mri_common_symbol) + repeat);
+ goto getout;
+ }
+
+ if (!need_pass_2)
+ p = frag_var (rs_fill, 1, 1, (relax_substateT) 0, (symbolS *) 0,
+ (offsetT) repeat, (char *) 0);
+ }
+ else
+ {
+ if (now_seg == absolute_section)
+ {
+ as_bad (_("space allocation too complex in absolute section"));
+ subseg_set (text_section, 0);
+ }
+
+ if (mri_common_symbol != NULL)
+ {
+ as_bad (_("space allocation too complex in common section"));
+ mri_common_symbol = NULL;
+ }
+
+ if (!need_pass_2)
+ p = frag_var (rs_space, 1, 1, (relax_substateT) 0,
+ make_expr_symbol (&exp), (offsetT) 0, (char *) 0);
+ }
+
+ if (p)
+ *p = val.X_add_number;
+ }
+
+ getout:
+
+ /* In MRI mode, after an odd number of bytes, we must align to an
+ even word boundary, unless the next instruction is a dc.b, ds.b
+ or dcb.b. */
+ if (flag_mri && (bytes & 1) != 0)
+ mri_pending_align = 1;
+
+ demand_empty_rest_of_line ();
+
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+}
+
+/* This is like s_space, but the value is a floating point number with
+ the given precision. This is for the MRI dcb.s pseudo-op and
+ friends. */
+
+void
+s_float_space (float_type)
+ int float_type;
+{
+ offsetT count;
+ int flen;
+ char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
+ char *stop = NULL;
+ char stopc;
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+
+ count = get_absolute_expression ();
+
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer != ',')
+ {
+ as_bad (_("missing value"));
+ ignore_rest_of_line ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+ return;
+ }
+
+ ++input_line_pointer;
+
+ SKIP_WHITESPACE ();
+
+ /* Skip any 0{letter} that may be present. Don't even check if the
+ * letter is legal. */
+ if (input_line_pointer[0] == '0'
+ && ISALPHA (input_line_pointer[1]))
+ input_line_pointer += 2;
+
+ /* Accept :xxxx, where the x's are hex digits, for a floating point
+ with the exact digits specified. */
+ if (input_line_pointer[0] == ':')
+ {
+ flen = hex_float (float_type, temp);
+ if (flen < 0)
+ {
+ ignore_rest_of_line ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+ return;
+ }
+ }
+ else
+ {
+ char *err;
+
+ err = md_atof (float_type, temp, &flen);
+ know (flen <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
+ know (flen > 0);
+ if (err)
+ {
+ as_bad (_("bad floating literal: %s"), err);
+ ignore_rest_of_line ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+ return;
+ }
+ }
+
+ while (--count >= 0)
+ {
+ char *p;
+
+ p = frag_more (flen);
+ memcpy (p, temp, (unsigned int) flen);
+ }
+
+ demand_empty_rest_of_line ();
+
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+}
+
+/* Handle the .struct pseudo-op, as found in MIPS assemblers. */
+
+void
+s_struct (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ char *stop = NULL;
+ char stopc;
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+ abs_section_offset = get_absolute_expression ();
+ subseg_set (absolute_section, 0);
+ demand_empty_rest_of_line ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+}
+
+void
+s_text (ignore)
+ int ignore ATTRIBUTE_UNUSED;
+{
+ register int temp;
+
+ temp = get_absolute_expression ();
+ subseg_set (text_section, (subsegT) temp);
+ demand_empty_rest_of_line ();
+#ifdef OBJ_VMS
+ const_flag &= ~IN_DEFAULT_SECTION;
+#endif
+}
+\f
+void
+demand_empty_rest_of_line ()
+{
+ SKIP_WHITESPACE ();
+ if (is_end_of_line[(unsigned char) *input_line_pointer])
+ input_line_pointer++;
+ else
+ ignore_rest_of_line ();
+
+ /* Return having already swallowed end-of-line. */
+}
+
+void
+ignore_rest_of_line ()
+{
+ /* For suspect lines: gives warning. */
+ if (!is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ if (ISPRINT (*input_line_pointer))
+ as_warn (_("rest of line ignored; first ignored character is `%c'"),
+ *input_line_pointer);
+ else
+ as_warn (_("rest of line ignored; first ignored character valued 0x%x"),
+ *input_line_pointer);
+
+ while (input_line_pointer < buffer_limit
+ && !is_end_of_line[(unsigned char) *input_line_pointer])
+ input_line_pointer++;
+ }
+
+ input_line_pointer++;
+
+ /* Return pointing just after end-of-line. */
+ know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
+}
+
+void
+discard_rest_of_line ()
+{
+ while (input_line_pointer < buffer_limit
+ && !is_end_of_line[(unsigned char) *input_line_pointer])
+ input_line_pointer++;
+
+ input_line_pointer++;
+
+ /* Return pointing just after end-of-line. */
+ know (is_end_of_line[(unsigned char) input_line_pointer[-1]]);
+}
+
+/* In: Pointer to a symbol.
+ Input_line_pointer->expression.
+
+ Out: Input_line_pointer->just after any whitespace after expression.
+ Tried to set symbol to value of expression.
+ Will change symbols type, value, and frag; */
+
+void
+pseudo_set (symbolP)
+ symbolS *symbolP;
+{
+ expressionS exp;
+#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
+ int ext;
+#endif /* OBJ_AOUT or OBJ_BOUT */
+
+ know (symbolP); /* NULL pointer is logic error. */
+#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
+ ext = S_IS_EXTERNAL (symbolP);
+#endif /* OBJ_AOUT or OBJ_BOUT */
+
+ (void) expression (&exp);
+
+ if (exp.X_op == O_illegal)
+ as_bad (_("illegal expression"));
+ else if (exp.X_op == O_absent)
+ as_bad (_("missing expression"));
+ else if (exp.X_op == O_big)
+ {
+ if (exp.X_add_number > 0)
+ as_bad (_("bignum invalid"));
+ else
+ as_bad (_("floating point number invalid"));
+ }
+ else if (exp.X_op == O_subtract
+ && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol))
+ && (symbol_get_frag (exp.X_add_symbol)
+ == symbol_get_frag (exp.X_op_symbol)))
+ {
+ exp.X_op = O_constant;
+ exp.X_add_number = (S_GET_VALUE (exp.X_add_symbol)
+ - S_GET_VALUE (exp.X_op_symbol));
+ }
+
+ switch (exp.X_op)
+ {
+ case O_illegal:
+ case O_absent:
+ case O_big:
+ exp.X_add_number = 0;
+ /* Fall through. */
+ case O_constant:
+ S_SET_SEGMENT (symbolP, absolute_section);
+#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
+ if (ext)
+ S_SET_EXTERNAL (symbolP);
+ else
+ S_CLEAR_EXTERNAL (symbolP);
+#endif /* OBJ_AOUT or OBJ_BOUT */
+ S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
+ if (exp.X_op != O_constant)
+ symbol_set_frag (symbolP, &zero_address_frag);
+ break;
+
+ case O_register:
+ S_SET_SEGMENT (symbolP, reg_section);
+ S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
+ symbol_set_frag (symbolP, &zero_address_frag);
+ break;
+
+ case O_symbol:
+ if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section
+ || exp.X_add_number != 0)
+ symbol_set_value_expression (symbolP, &exp);
+ else if (symbol_section_p (symbolP))
+ as_bad ("attempt to set value of section symbol");
+ else
+ {
+ symbolS *s = exp.X_add_symbol;
+
+ S_SET_SEGMENT (symbolP, S_GET_SEGMENT (s));
+#if (defined (OBJ_AOUT) || defined (OBJ_BOUT)) && ! defined (BFD_ASSEMBLER)
+ if (ext)
+ S_SET_EXTERNAL (symbolP);
+ else
+ S_CLEAR_EXTERNAL (symbolP);
+#endif /* OBJ_AOUT or OBJ_BOUT */
+ S_SET_VALUE (symbolP,
+ exp.X_add_number + S_GET_VALUE (s));
+ symbol_set_frag (symbolP, symbol_get_frag (s));
+ copy_symbol_attributes (symbolP, s);
+ }
+ break;
+
+ default:
+ /* The value is some complex expression.
+ FIXME: Should we set the segment to anything? */
+ symbol_set_value_expression (symbolP, &exp);
+ break;
+ }
+}
+\f
+/* cons()
+
+ CONStruct more frag of .bytes, or .words etc.
+ Should need_pass_2 be 1 then emit no frag(s).
+ This understands EXPRESSIONS.
+
+ Bug (?)
+
+ This has a split personality. We use expression() to read the
+ value. We can detect if the value won't fit in a byte or word.
+ But we can't detect if expression() discarded significant digits
+ in the case of a long. Not worth the crocks required to fix it. */
+
+/* Select a parser for cons expressions. */
+
+/* Some targets need to parse the expression in various fancy ways.
+ You can define TC_PARSE_CONS_EXPRESSION to do whatever you like
+ (for example, the HPPA does this). Otherwise, you can define
+ BITFIELD_CONS_EXPRESSIONS to permit bitfields to be specified, or
+ REPEAT_CONS_EXPRESSIONS to permit repeat counts. If none of these
+ are defined, which is the normal case, then only simple expressions
+ are permitted. */
+
+#ifdef TC_M68K
+static void
+parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes));
+#endif
+
+#ifndef TC_PARSE_CONS_EXPRESSION
+#ifdef BITFIELD_CONS_EXPRESSIONS
+#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_bitfield_cons (EXP, NBYTES)
+static void
+parse_bitfield_cons PARAMS ((expressionS *exp, unsigned int nbytes));
+#endif
+#ifdef REPEAT_CONS_EXPRESSIONS
+#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) parse_repeat_cons (EXP, NBYTES)
+static void
+parse_repeat_cons PARAMS ((expressionS *exp, unsigned int nbytes));
+#endif
+
+/* If we haven't gotten one yet, just call expression. */
+#ifndef TC_PARSE_CONS_EXPRESSION
+#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) expression (EXP)
+#endif
+#endif
+
+/* Worker to do .byte etc statements.
+ Clobbers input_line_pointer and checks end-of-line. */
+
+static void
+cons_worker (nbytes, rva)
+ register int nbytes; /* 1=.byte, 2=.word, 4=.long. */
+ int rva;
+{
+ int c;
+ expressionS exp;
+ char *stop = NULL;
+ char stopc;
+
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+
+ if (is_it_end_of_statement ())
+ {
+ demand_empty_rest_of_line ();
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+ return;
+ }
+
+#ifdef md_cons_align
+ md_cons_align (nbytes);
+#endif
+
+ c = 0;
+ do
+ {
+#ifdef TC_M68K
+ if (flag_m68k_mri)
+ parse_mri_cons (&exp, (unsigned int) nbytes);
+ else
+#endif
+ TC_PARSE_CONS_EXPRESSION (&exp, (unsigned int) nbytes);
+
+ if (rva)
+ {
+ if (exp.X_op == O_symbol)
+ exp.X_op = O_symbol_rva;
+ else
+ as_fatal (_("rva without symbol"));
+ }
+ emit_expr (&exp, (unsigned int) nbytes);
+ ++c;
+ }
+ while (*input_line_pointer++ == ',');
+
+ /* In MRI mode, after an odd number of bytes, we must align to an
+ even word boundary, unless the next instruction is a dc.b, ds.b
+ or dcb.b. */
+ if (flag_mri && nbytes == 1 && (c & 1) != 0)
+ mri_pending_align = 1;
+
+ input_line_pointer--; /* Put terminator back into stream. */
+
+ demand_empty_rest_of_line ();
+
+ if (flag_mri)
+ mri_comment_end (stop, stopc);
+}
+
+void
+cons (size)
+ int size;
+{
+ cons_worker (size, 0);
+}
+
+void
+s_rva (size)
+ int size;
+{
+ cons_worker (size, 1);
+}
+
+/* Put the contents of expression EXP into the object file using
+ NBYTES bytes. If need_pass_2 is 1, this does nothing. */
+
+void
+emit_expr (exp, nbytes)
+ expressionS *exp;
+ unsigned int nbytes;
+{
+ operatorT op;
+ register char *p;
+ valueT extra_digit = 0;
+
+ /* Don't do anything if we are going to make another pass. */
+ if (need_pass_2)
+ return;
+
+#ifndef NO_LISTING
+#ifdef OBJ_ELF
+ /* When gcc emits DWARF 1 debugging pseudo-ops, a line number will
+ appear as a four byte positive constant in the .line section,
+ followed by a 2 byte 0xffff. Look for that case here. */
+ {
+ static int dwarf_line = -1;
+
+ if (strcmp (segment_name (now_seg), ".line") != 0)
+ dwarf_line = -1;
+ else if (dwarf_line >= 0
+ && nbytes == 2
+ && exp->X_op == O_constant
+ && (exp->X_add_number == -1 || exp->X_add_number == 0xffff))
+ listing_source_line ((unsigned int) dwarf_line);
+ else if (nbytes == 4
+ && exp->X_op == O_constant
+ && exp->X_add_number >= 0)
+ dwarf_line = exp->X_add_number;
+ else
+ dwarf_line = -1;
+ }
+
+ /* When gcc emits DWARF 1 debugging pseudo-ops, a file name will
+ appear as a 2 byte TAG_compile_unit (0x11) followed by a 2 byte
+ AT_sibling (0x12) followed by a four byte address of the sibling
+ followed by a 2 byte AT_name (0x38) followed by the name of the
+ file. We look for that case here. */
+ {
+ static int dwarf_file = 0;
+
+ if (strcmp (segment_name (now_seg), ".debug") != 0)
+ dwarf_file = 0;
+ else if (dwarf_file == 0
+ && nbytes == 2
+ && exp->X_op == O_constant
+ && exp->X_add_number == 0x11)
+ dwarf_file = 1;
+ else if (dwarf_file == 1
+ && nbytes == 2
+ && exp->X_op == O_constant
+ && exp->X_add_number == 0x12)
+ dwarf_file = 2;
+ else if (dwarf_file == 2
+ && nbytes == 4)
+ dwarf_file = 3;
+ else if (dwarf_file == 3
+ && nbytes == 2
+ && exp->X_op == O_constant
+ && exp->X_add_number == 0x38)
+ dwarf_file = 4;
+ else
+ dwarf_file = 0;
+
+ /* The variable dwarf_file_string tells stringer that the string
+ may be the name of the source file. */
+ if (dwarf_file == 4)
+ dwarf_file_string = 1;
+ else
+ dwarf_file_string = 0;
+ }
+#endif
+#endif
+
+ if (check_eh_frame (exp, &nbytes))
+ return;
+
+ op = exp->X_op;
+
+ /* Allow `.word 0' in the absolute section. */
+ if (now_seg == absolute_section)
+ {
+ if (op != O_constant || exp->X_add_number != 0)
+ as_bad (_("attempt to store value in absolute section"));
+ abs_section_offset += nbytes;
+ return;
+ }
+
+ /* Handle a negative bignum. */
+ if (op == O_uminus
+ && exp->X_add_number == 0
+ && symbol_get_value_expression (exp->X_add_symbol)->X_op == O_big
+ && symbol_get_value_expression (exp->X_add_symbol)->X_add_number > 0)
+ {
+ int i;
+ unsigned long carry;
+
+ exp = symbol_get_value_expression (exp->X_add_symbol);
+
+ /* Negate the bignum: one's complement each digit and add 1. */
+ carry = 1;
+ for (i = 0; i < exp->X_add_number; i++)
+ {
+ unsigned long next;
+
+ next = (((~(generic_bignum[i] & LITTLENUM_MASK))
+ & LITTLENUM_MASK)
+ + carry);
+ generic_bignum[i] = next & LITTLENUM_MASK;
+ carry = next >> LITTLENUM_NUMBER_OF_BITS;
+ }
+
+ /* We can ignore any carry out, because it will be handled by
+ extra_digit if it is needed. */
+
+ extra_digit = (valueT) -1;
+ op = O_big;
+ }
+
+ if (op == O_absent || op == O_illegal)
+ {
+ as_warn (_("zero assumed for missing expression"));
+ exp->X_add_number = 0;
+ op = O_constant;
+ }
+ else if (op == O_big && exp->X_add_number <= 0)
+ {
+ as_bad (_("floating point number invalid"));
+ exp->X_add_number = 0;
+ op = O_constant;
+ }
+ else if (op == O_register)
+ {
+ as_warn (_("register value used as expression"));
+ op = O_constant;
+ }
+
+ p = frag_more ((int) nbytes);
+
+#ifndef WORKING_DOT_WORD
+ /* If we have the difference of two symbols in a word, save it on
+ the broken_words list. See the code in write.c. */
+ if (op == O_subtract && nbytes == 2)
+ {
+ struct broken_word *x;
+
+ x = (struct broken_word *) xmalloc (sizeof (struct broken_word));
+ x->next_broken_word = broken_words;
+ broken_words = x;
+ x->seg = now_seg;
+ x->subseg = now_subseg;
+ x->frag = frag_now;
+ x->word_goes_here = p;
+ x->dispfrag = 0;
+ x->add = exp->X_add_symbol;
+ x->sub = exp->X_op_symbol;
+ x->addnum = exp->X_add_number;
+ x->added = 0;
+ x->use_jump = 0;
+ new_broken_words++;
+ return;
+ }
+#endif
+
+ /* If we have an integer, but the number of bytes is too large to
+ pass to md_number_to_chars, handle it as a bignum. */
+ if (op == O_constant && nbytes > sizeof (valueT))
+ {
+ valueT val;
+ int gencnt;
+
+ if (!exp->X_unsigned && exp->X_add_number < 0)
+ extra_digit = (valueT) -1;
+ val = (valueT) exp->X_add_number;
+ gencnt = 0;
+ do
+ {
+ generic_bignum[gencnt] = val & LITTLENUM_MASK;
+ val >>= LITTLENUM_NUMBER_OF_BITS;
+ ++gencnt;
+ }
+ while (val != 0);
+ op = exp->X_op = O_big;
+ exp->X_add_number = gencnt;
+ }
+
+ if (op == O_constant)
+ {
+ register valueT get;
+ register valueT use;
+ register valueT mask;
+ valueT hibit;
+ register valueT unmask;
+
+ /* JF << of >= number of bits in the object is undefined. In
+ particular SPARC (Sun 4) has problems. */
+ if (nbytes >= sizeof (valueT))
+ {
+ mask = 0;
+ if (nbytes > sizeof (valueT))
+ hibit = 0;
+ else
+ hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1);
+ }
+ else
+ {
+ /* Don't store these bits. */
+ mask = ~(valueT) 0 << (BITS_PER_CHAR * nbytes);
+ hibit = (valueT) 1 << (nbytes * BITS_PER_CHAR - 1);
+ }
+
+ unmask = ~mask; /* Do store these bits. */
+
+#ifdef NEVER
+ "Do this mod if you want every overflow check to assume SIGNED 2's complement data.";
+ mask = ~(unmask >> 1); /* Includes sign bit now. */
+#endif
+
+ get = exp->X_add_number;
+ use = get & unmask;
+ if ((get & mask) != 0
+ && ((get & mask) != mask
+ || (get & hibit) == 0))
+ { /* Leading bits contain both 0s & 1s. */
+ as_warn (_("value 0x%lx truncated to 0x%lx"),
+ (unsigned long) get, (unsigned long) use);
+ }
+ /* Put bytes in right order. */
+ md_number_to_chars (p, use, (int) nbytes);
+ }
+ else if (op == O_big)
+ {
+ unsigned int size;
+ LITTLENUM_TYPE *nums;
+
+ know (nbytes % CHARS_PER_LITTLENUM == 0);
+
+ size = exp->X_add_number * CHARS_PER_LITTLENUM;
+ if (nbytes < size)
+ {
+ as_warn (_("bignum truncated to %d bytes"), nbytes);
+ size = nbytes;
+ }
+
+ if (target_big_endian)
+ {
+ while (nbytes > size)
+ {
+ md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM);
+ nbytes -= CHARS_PER_LITTLENUM;
+ p += CHARS_PER_LITTLENUM;
+ }
+
+ nums = generic_bignum + size / CHARS_PER_LITTLENUM;
+ while (size >= CHARS_PER_LITTLENUM)
+ {
+ --nums;
+ md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);
+ size -= CHARS_PER_LITTLENUM;
+ p += CHARS_PER_LITTLENUM;
+ }
+ }
+ else
+ {
+ nums = generic_bignum;
+ while (size >= CHARS_PER_LITTLENUM)
+ {
+ md_number_to_chars (p, (valueT) *nums, CHARS_PER_LITTLENUM);
+ ++nums;
+ size -= CHARS_PER_LITTLENUM;
+ p += CHARS_PER_LITTLENUM;
+ nbytes -= CHARS_PER_LITTLENUM;
+ }
+
+ while (nbytes >= CHARS_PER_LITTLENUM)
+ {
+ md_number_to_chars (p, extra_digit, CHARS_PER_LITTLENUM);
+ nbytes -= CHARS_PER_LITTLENUM;
+ p += CHARS_PER_LITTLENUM;
+ }
+ }
+ }
+ else
+ {
+ memset (p, 0, nbytes);
+
+ /* Now we need to generate a fixS to record the symbol value.
+ This is easy for BFD. For other targets it can be more
+ complex. For very complex cases (currently, the HPPA and
+ NS32K), you can define TC_CONS_FIX_NEW to do whatever you
+ want. For simpler cases, you can define TC_CONS_RELOC to be
+ the name of the reloc code that should be stored in the fixS.
+ If neither is defined, the code uses NO_RELOC if it is
+ defined, and otherwise uses 0. */
+
+#ifdef BFD_ASSEMBLER
+#ifdef TC_CONS_FIX_NEW
+ TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);
+#else
+ {
+ 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);
+ }
+#endif
+#else
+#ifdef TC_CONS_FIX_NEW
+ TC_CONS_FIX_NEW (frag_now, p - frag_now->fr_literal, nbytes, exp);
+#else
+ /* Figure out which reloc number to use. Use TC_CONS_RELOC if
+ it is defined, otherwise use NO_RELOC if it is defined,
+ otherwise use 0. */
+#ifndef TC_CONS_RELOC
+#ifdef NO_RELOC
+#define TC_CONS_RELOC NO_RELOC
+#else
+#define TC_CONS_RELOC 0
+#endif
+#endif
+ fix_new_exp (frag_now, p - frag_now->fr_literal, (int) nbytes, exp, 0,
+ TC_CONS_RELOC);
+#endif /* TC_CONS_FIX_NEW */
+#endif /* BFD_ASSEMBLER */
+ }
+}
+\f
+#ifdef BITFIELD_CONS_EXPRESSIONS
+
+/* i960 assemblers, (eg, asm960), allow bitfields after ".byte" as
+ w:x,y:z, where w and y are bitwidths and x and y are values. They
+ then pack them all together. We do a little better in that we allow
+ them in words, longs, etc. and we'll pack them in target byte order
+ for you.
+
+ The rules are: pack least significat bit first, if a field doesn't
+ entirely fit, put it in the next unit. Overflowing the bitfield is
+ explicitly *not* even a warning. The bitwidth should be considered
+ a "mask".
+
+ To use this function the tc-XXX.h file should define
+ BITFIELD_CONS_EXPRESSIONS. */
+
+static void
+parse_bitfield_cons (exp, nbytes)
+ expressionS *exp;
+ unsigned int nbytes;
+{
+ unsigned int bits_available = BITS_PER_CHAR * nbytes;
+ char *hold = input_line_pointer;
+
+ (void) expression (exp);
+
+ if (*input_line_pointer == ':')
+ {
+ /* Bitfields. */
+ long value = 0;
+
+ for (;;)
+ {
+ unsigned long width;
+
+ if (*input_line_pointer != ':')
+ {
+ input_line_pointer = hold;
+ break;
+ } /* Next piece is not a bitfield. */
+
+ /* In the general case, we can't allow
+ full expressions with symbol
+ differences and such. The relocation
+ entries for symbols not defined in this
+ assembly would require arbitrary field
+ widths, positions, and masks which most
+ of our current object formats don't
+ support.
+
+ In the specific case where a symbol
+ *is* defined in this assembly, we
+ *could* build fixups and track it, but
+ this could lead to confusion for the
+ backends. I'm lazy. I'll take any
+ SEG_ABSOLUTE. I think that means that
+ you can use a previous .set or
+ .equ type symbol. xoxorich. */
+
+ if (exp->X_op == O_absent)
+ {
+ as_warn (_("using a bit field width of zero"));
+ exp->X_add_number = 0;
+ exp->X_op = O_constant;
+ } /* Implied zero width bitfield. */
+
+ if (exp->X_op != O_constant)
+ {
+ *input_line_pointer = '\0';
+ as_bad (_("field width \"%s\" too complex for a bitfield"), hold);
+ *input_line_pointer = ':';
+ demand_empty_rest_of_line ();
+ return;
+ } /* Too complex. */
+
+ if ((width = exp->X_add_number) > (BITS_PER_CHAR * nbytes))
+ {
+ as_warn (_("field width %lu too big to fit in %d bytes: truncated to %d bits"),
+ width, nbytes, (BITS_PER_CHAR * nbytes));
+ width = BITS_PER_CHAR * nbytes;
+ } /* Too big. */
+
+ if (width > bits_available)
+ {
+ /* FIXME-SOMEDAY: backing up and reparsing is wasteful. */
+ input_line_pointer = hold;
+ exp->X_add_number = value;
+ break;
+ } /* Won't fit. */
+
+ /* Skip ':'. */
+ hold = ++input_line_pointer;
+
+ (void) expression (exp);
+ if (exp->X_op != O_constant)
+ {
+ char cache = *input_line_pointer;
+
+ *input_line_pointer = '\0';
+ as_bad (_("field value \"%s\" too complex for a bitfield"), hold);
+ *input_line_pointer = cache;
+ demand_empty_rest_of_line ();
+ return;
+ } /* Too complex. */
+
+ value |= ((~(-1 << width) & exp->X_add_number)
+ << ((BITS_PER_CHAR * nbytes) - bits_available));
+
+ if ((bits_available -= width) == 0
+ || is_it_end_of_statement ()
+ || *input_line_pointer != ',')
+ {
+ break;
+ } /* All the bitfields we're gonna get. */
+
+ hold = ++input_line_pointer;
+ (void) expression (exp);
+ }
+
+ exp->X_add_number = value;
+ exp->X_op = O_constant;
+ exp->X_unsigned = 1;
+ }
+}
+
+#endif /* BITFIELD_CONS_EXPRESSIONS */
+\f
+/* Handle an MRI style string expression. */
+
+#ifdef TC_M68K
+static void
+parse_mri_cons (exp, nbytes)
+ expressionS *exp;
+ unsigned int nbytes;
+{
+ if (*input_line_pointer != '\''
+ && (input_line_pointer[1] != '\''
+ || (*input_line_pointer != 'A'
+ && *input_line_pointer != 'E')))
+ TC_PARSE_CONS_EXPRESSION (exp, nbytes);
+ else
+ {
+ unsigned int scan;
+ unsigned int result = 0;
+
+ /* An MRI style string. Cut into as many bytes as will fit into
+ a nbyte chunk, left justify if necessary, and separate with
+ commas so we can try again later. */
+ if (*input_line_pointer == 'A')
+ ++input_line_pointer;
+ else if (*input_line_pointer == 'E')
+ {
+ as_bad (_("EBCDIC constants are not supported"));
+ ++input_line_pointer;
+ }
+
+ input_line_pointer++;
+ for (scan = 0; scan < nbytes; scan++)
+ {
+ if (*input_line_pointer == '\'')
+ {
+ if (input_line_pointer[1] == '\'')
+ {
+ input_line_pointer++;
+ }
+ else
+ break;
+ }
+ result = (result << 8) | (*input_line_pointer++);
+ }
+
+ /* Left justify. */
+ while (scan < nbytes)
+ {
+ result <<= 8;
+ scan++;
+ }
+
+ /* Create correct expression. */
+ exp->X_op = O_constant;
+ exp->X_add_number = result;
+
+ /* Fake it so that we can read the next char too. */
+ if (input_line_pointer[0] != '\'' ||
+ (input_line_pointer[0] == '\'' && input_line_pointer[1] == '\''))
+ {
+ input_line_pointer -= 2;
+ input_line_pointer[0] = ',';
+ input_line_pointer[1] = '\'';
+ }
+ else
+ input_line_pointer++;
+ }
+}
+#endif /* TC_M68K */
+\f
+#ifdef REPEAT_CONS_EXPRESSIONS
+
+/* Parse a repeat expression for cons. This is used by the MIPS
+ assembler. The format is NUMBER:COUNT; NUMBER appears in the
+ object file COUNT times.
+
+ To use this for a target, define REPEAT_CONS_EXPRESSIONS. */
+
+static void
+parse_repeat_cons (exp, nbytes)
+ expressionS *exp;
+ unsigned int nbytes;
+{
+ expressionS count;
+ register int i;
+
+ expression (exp);
+
+ if (*input_line_pointer != ':')
+ {
+ /* No repeat count. */
+ return;
+ }
+
+ ++input_line_pointer;
+ expression (&count);
+ if (count.X_op != O_constant
+ || count.X_add_number <= 0)
+ {
+ as_warn (_("unresolvable or nonpositive repeat count; using 1"));
+ return;
+ }
+
+ /* The cons function is going to output this expression once. So we
+ output it count - 1 times. */
+ for (i = count.X_add_number - 1; i > 0; i--)
+ emit_expr (exp, nbytes);
+}
+
+#endif /* REPEAT_CONS_EXPRESSIONS */
+\f
+/* Parse a floating point number represented as a hex constant. This
+ permits users to specify the exact bits they want in the floating
+ point number. */
+
+static int
+hex_float (float_type, bytes)
+ int float_type;
+ char *bytes;
+{
+ int length;
+ int i;
+
+ switch (float_type)
+ {
+ case 'f':
+ case 'F':
+ case 's':
+ case 'S':
+ length = 4;
+ break;
+
+ case 'd':
+ case 'D':
+ case 'r':
+ case 'R':
+ length = 8;
+ break;
+
+ case 'x':
+ case 'X':
+ length = 12;
+ break;
+
+ case 'p':
+ case 'P':
+ length = 12;
+ break;
+
+ default:
+ as_bad (_("unknown floating type type '%c'"), float_type);
+ return -1;
+ }
+
+ /* It would be nice if we could go through expression to parse the
+ hex constant, but if we get a bignum it's a pain to sort it into
+ the buffer correctly. */
+ i = 0;
+ while (hex_p (*input_line_pointer) || *input_line_pointer == '_')
+ {
+ int d;
+
+ /* The MRI assembler accepts arbitrary underscores strewn about
+ through the hex constant, so we ignore them as well. */
+ if (*input_line_pointer == '_')
+ {
+ ++input_line_pointer;
+ continue;
+ }
+
+ if (i >= length)
+ {
+ as_warn (_("floating point constant too large"));
+ return -1;
+ }
+ d = hex_value (*input_line_pointer) << 4;
+ ++input_line_pointer;
+ while (*input_line_pointer == '_')
+ ++input_line_pointer;
+ if (hex_p (*input_line_pointer))
+ {
+ d += hex_value (*input_line_pointer);
+ ++input_line_pointer;
+ }
+ if (target_big_endian)
+ bytes[i] = d;
+ else
+ bytes[length - i - 1] = d;
+ ++i;
+ }
+
+ if (i < length)
+ {
+ if (target_big_endian)
+ memset (bytes + i, 0, length - i);
+ else
+ memset (bytes, 0, length - i);
+ }
+
+ return length;
+}
+
+/* float_cons()
+
+ CONStruct some more frag chars of .floats .ffloats etc.
+ Makes 0 or more new frags.
+ If need_pass_2 == 1, no frags are emitted.
+ This understands only floating literals, not expressions. Sorry.
+
+ A floating constant is defined by atof_generic(), except it is preceded
+ by 0d 0f 0g or 0h. After observing the STRANGE way my BSD AS does its
+ reading, I decided to be incompatible. This always tries to give you
+ rounded bits to the precision of the pseudo-op. Former AS did premature
+ truncatation, restored noisy bits instead of trailing 0s AND gave you
+ a choice of 2 flavours of noise according to which of 2 floating-point
+ scanners you directed AS to use.
+
+ In: input_line_pointer->whitespace before, or '0' of flonum. */
+
+void
+float_cons (float_type)
+ /* Clobbers input_line-pointer, checks end-of-line. */
+ register int float_type; /* 'f':.ffloat ... 'F':.float ... */
+{
+ register char *p;
+ int length; /* Number of chars in an object. */
+ register char *err; /* Error from scanning floating literal. */
+ char temp[MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT];
+
+ if (is_it_end_of_statement ())
+ {
+ demand_empty_rest_of_line ();
+ return;
+ }
+
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
+ do
+ {
+ /* input_line_pointer->1st char of a flonum (we hope!). */
+ SKIP_WHITESPACE ();
+
+ /* Skip any 0{letter} that may be present. Don't even check if the
+ letter is legal. Someone may invent a "z" format and this routine
+ has no use for such information. Lusers beware: you get
+ diagnostics if your input is ill-conditioned. */
+ if (input_line_pointer[0] == '0'
+ && ISALPHA (input_line_pointer[1]))
+ input_line_pointer += 2;
+
+ /* Accept :xxxx, where the x's are hex digits, for a floating
+ point with the exact digits specified. */
+ if (input_line_pointer[0] == ':')
+ {
+ ++input_line_pointer;
+ length = hex_float (float_type, temp);
+ if (length < 0)
+ {
+ ignore_rest_of_line ();
+ return;
+ }
+ }
+ else
+ {
+ err = md_atof (float_type, temp, &length);
+ know (length <= MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT);
+ know (length > 0);
+ if (err)
+ {
+ as_bad (_("bad floating literal: %s"), err);
+ ignore_rest_of_line ();
+ return;
+ }
+ }
+
+ if (!need_pass_2)
+ {
+ int count;
+
+ count = 1;
+
+#ifdef REPEAT_CONS_EXPRESSIONS
+ if (*input_line_pointer == ':')
+ {
+ expressionS count_exp;
+
+ ++input_line_pointer;
+ expression (&count_exp);
+
+ if (count_exp.X_op != O_constant
+ || count_exp.X_add_number <= 0)
+ as_warn (_("unresolvable or nonpositive repeat count; using 1"));
+ else
+ count = count_exp.X_add_number;
+ }
+#endif
+
+ while (--count >= 0)
+ {
+ p = frag_more (length);
+ memcpy (p, temp, (unsigned int) length);
+ }
+ }
+ SKIP_WHITESPACE ();
+ }
+ while (*input_line_pointer++ == ',');
+
+ /* Put terminator back into stream. */
+ --input_line_pointer;
+ demand_empty_rest_of_line ();
+}
+\f
+/* Return the size of a LEB128 value. */
+
+static inline int
+sizeof_sleb128 (value)
+ offsetT value;
+{
+ register int size = 0;
+ register unsigned byte;
+
+ do
+ {
+ byte = (value & 0x7f);
+ /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
+ Fortunately, we can structure things so that the extra work reduces
+ to a noop on systems that do things "properly". */
+ value = (value >> 7) | ~(-(offsetT)1 >> 7);
+ size += 1;
+ }
+ while (!(((value == 0) && ((byte & 0x40) == 0))
+ || ((value == -1) && ((byte & 0x40) != 0))));
+
+ return size;
+}
+
+static inline int
+sizeof_uleb128 (value)
+ valueT value;
+{
+ register int size = 0;
+ register unsigned byte;
+
+ do
+ {
+ byte = (value & 0x7f);
+ value >>= 7;
+ size += 1;
+ }
+ while (value != 0);
+
+ return size;
+}
+
+int
+sizeof_leb128 (value, sign)
+ valueT value;
+ int sign;
+{
+ if (sign)
+ return sizeof_sleb128 ((offsetT) value);
+ else
+ return sizeof_uleb128 (value);
+}
+
+/* Output a LEB128 value. */
+
+static inline int
+output_sleb128 (p, value)
+ char *p;
+ offsetT value;
+{
+ register char *orig = p;
+ register int more;
+
+ do
+ {
+ unsigned byte = (value & 0x7f);
+
+ /* Sadly, we cannot rely on typical arithmetic right shift behaviour.
+ Fortunately, we can structure things so that the extra work reduces
+ to a noop on systems that do things "properly". */
+ value = (value >> 7) | ~(-(offsetT)1 >> 7);
+
+ more = !((((value == 0) && ((byte & 0x40) == 0))
+ || ((value == -1) && ((byte & 0x40) != 0))));
+ if (more)
+ byte |= 0x80;
+
+ *p++ = byte;
+ }
+ while (more);
+
+ return p - orig;
+}
+
+static inline int
+output_uleb128 (p, value)
+ char *p;
+ valueT value;
+{
+ char *orig = p;
+
+ do
+ {
+ unsigned byte = (value & 0x7f);
+ value >>= 7;
+ if (value != 0)
+ /* More bytes to follow. */
+ byte |= 0x80;
+
+ *p++ = byte;
+ }
+ while (value != 0);
+
+ return p - orig;
+}
+
+int
+output_leb128 (p, value, sign)
+ char *p;
+ valueT value;
+ int sign;
+{
+ if (sign)
+ return output_sleb128 (p, (offsetT) value);
+ else
+ return output_uleb128 (p, value);
+}
+
+/* Do the same for bignums. We combine sizeof with output here in that
+ we don't output for NULL values of P. It isn't really as critical as
+ for "normal" values that this be streamlined. */
+
+static inline int
+output_big_sleb128 (p, bignum, size)
+ char *p;
+ LITTLENUM_TYPE *bignum;
+ int size;
+{
+ char *orig = p;
+ valueT val = 0;
+ int loaded = 0;
+ unsigned byte;
+
+ /* Strip leading sign extensions off the bignum. */
+ while (size > 0 && bignum[size - 1] == (LITTLENUM_TYPE) -1)
+ size--;
+
+ do
+ {
+ if (loaded < 7 && size > 0)
+ {
+ val |= (*bignum << loaded);
+ loaded += 8 * CHARS_PER_LITTLENUM;
+ size--;
+ bignum++;
+ }
+
+ byte = val & 0x7f;
+ loaded -= 7;
+ val >>= 7;
+
+ if (size == 0)
+ {
+ if ((val == 0 && (byte & 0x40) == 0)
+ || (~(val | ~(((valueT) 1 << loaded) - 1)) == 0
+ && (byte & 0x40) != 0))
+ byte |= 0x80;
+ }
+
+ if (orig)
+ *p = byte;
+ p++;
+ }
+ while (byte & 0x80);
+
+ return p - orig;
+}
+
+static inline int
+output_big_uleb128 (p, bignum, size)
+ char *p;
+ LITTLENUM_TYPE *bignum;
+ int size;
+{
+ char *orig = p;
+ valueT val = 0;
+ int loaded = 0;
+ unsigned byte;
+
+ /* Strip leading zeros off the bignum. */
+ /* XXX: Is this needed? */
+ while (size > 0 && bignum[size - 1] == 0)
+ size--;
+
+ do
+ {
+ if (loaded < 7 && size > 0)
+ {
+ val |= (*bignum << loaded);
+ loaded += 8 * CHARS_PER_LITTLENUM;
+ size--;
+ bignum++;
+ }
+
+ byte = val & 0x7f;
+ loaded -= 7;
+ val >>= 7;
+
+ if (size > 0 || val)
+ byte |= 0x80;
+
+ if (orig)
+ *p = byte;
+ p++;
+ }
+ while (byte & 0x80);
+
+ return p - orig;
+}
+
+static int
+output_big_leb128 (p, bignum, size, sign)
+ char *p;
+ LITTLENUM_TYPE *bignum;
+ int size, sign;
+{
+ if (sign)
+ return output_big_sleb128 (p, bignum, size);
+ else
+ return output_big_uleb128 (p, bignum, size);
+}
+
+/* Generate the appropriate fragments for a given expression to emit a
+ leb128 value. */
+
+void
+emit_leb128_expr (exp, sign)
+ expressionS *exp;
+ int sign;
+{
+ operatorT op = exp->X_op;
+ int nbytes;
+
+ if (op == O_absent || op == O_illegal)
+ {
+ as_warn (_("zero assumed for missing expression"));
+ exp->X_add_number = 0;
+ op = O_constant;
+ }
+ else if (op == O_big && exp->X_add_number <= 0)
+ {
+ as_bad (_("floating point number invalid"));
+ exp->X_add_number = 0;
+ op = O_constant;
+ }
+ else if (op == O_register)
+ {
+ as_warn (_("register value used as expression"));
+ op = O_constant;
+ }
+
+ /* Let check_eh_frame know that data is being emitted. nbytes == -1 is
+ a signal that this is leb128 data. It shouldn't optimize this away. */
+ nbytes = -1;
+ if (check_eh_frame (exp, &nbytes))
+ abort ();
+
+ /* Let the backend know that subsequent data may be byte aligned. */
+#ifdef md_cons_align
+ md_cons_align (1);
#endif
-
- case '\\':
- case '"':
- break; /* As itself. */
-
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9': {
- long number;
-
- for (number = 0; isdigit(c); c = *input_line_pointer++) {
- number = number * 8 + c - '0';
- }
- c = number & 0xff;
- }
- --input_line_pointer;
- break;
-
- case '\n':
- /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
- as_warn("Unterminated string: Newline inserted.");
- c = '\n';
- break;
-
- default:
-
-#ifdef ONLY_STANDARD_ESCAPES
- as_bad("Bad escaped character in string, '?' assumed");
- c = '?';
-#endif /* ONLY_STANDARD_ESCAPES */
-
- break;
- } /* switch on escaped char */
- break;
-
- default:
- break;
- } /* switch on char */
- return(c);
-} /* next_char_of_string() */
+
+ if (op == O_constant)
+ {
+ /* If we've got a constant, emit the thing directly right now. */
+
+ valueT value = exp->X_add_number;
+ int size;
+ char *p;
+
+ size = sizeof_leb128 (value, sign);
+ p = frag_more (size);
+ output_leb128 (p, value, sign);
+ }
+ else if (op == O_big)
+ {
+ /* O_big is a different sort of constant. */
+
+ int size;
+ char *p;
+
+ size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign);
+ p = frag_more (size);
+ output_big_leb128 (p, generic_bignum, exp->X_add_number, sign);
+ }
+ else
+ {
+ /* Otherwise, we have to create a variable sized fragment and
+ resolve things later. */
+
+ frag_var (rs_leb128, sizeof_uleb128 (~(valueT) 0), 0, sign,
+ make_expr_symbol (exp), 0, (char *) NULL);
+ }
+}
+
+/* Parse the .sleb128 and .uleb128 pseudos. */
+
+void
+s_leb128 (sign)
+ int sign;
+{
+ expressionS exp;
+
+ do
+ {
+ expression (&exp);
+ emit_leb128_expr (&exp, sign);
+ }
+ while (*input_line_pointer++ == ',');
+
+ input_line_pointer--;
+ demand_empty_rest_of_line ();
+}
\f
-static segT
- get_segmented_expression (expP)
-register expressionS * expP;
+/* We read 0 or more ',' separated, double-quoted strings.
+ Caller should have checked need_pass_2 is FALSE because we don't
+ check it. */
+
+void
+stringer (append_zero) /* Worker to do .ascii etc statements. */
+ /* Checks end-of-line. */
+ register int append_zero; /* 0: don't append '\0', else 1. */
{
- register segT retval;
-
- if ((retval = expression(expP)) == SEG_PASS1 || retval == SEG_ABSENT || retval == SEG_BIG)
+ register unsigned int c;
+ char *start;
+
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#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 '\"'.
+ We fake a leading ',' if there is (supposed to be)
+ a 1st, expression. We keep demanding expressions for each ','. */
+ if (is_it_end_of_statement ())
+ {
+ c = 0; /* Skip loop. */
+ ++input_line_pointer; /* Compensate for end of loop. */
+ }
+ else
+ {
+ c = ','; /* Do loop. */
+ }
+ /* If we have been switched into the abs_section then we
+ will not have an obstack onto which we can hang strings. */
+ if (now_seg == absolute_section)
+ {
+ as_bad (_("strings must be placed into a section"));
+ c = 0;
+ ignore_rest_of_line ();
+ }
+
+ while (c == ',' || c == '<' || c == '"')
+ {
+ SKIP_WHITESPACE ();
+ switch (*input_line_pointer)
+ {
+ case '\"':
+ ++input_line_pointer; /*->1st char of string. */
+ start = input_line_pointer;
+ while (is_a_char (c = next_char_of_string ()))
{
- as_bad("Expected address expression: absolute 0 assumed");
- retval = expP->X_seg = SEG_ABSOLUTE;
- expP->X_add_number = 0;
- expP->X_add_symbol = expP->X_subtract_symbol = 0;
+ FRAG_APPEND_1_CHAR (c);
}
- return (retval); /* SEG_ ABSOLUTE,UNKNOWN,DATA,TEXT,BSS */
-}
+ if (append_zero)
+ {
+ FRAG_APPEND_1_CHAR (0);
+ }
+ know (input_line_pointer[-1] == '\"');
-static segT get_known_segmented_expression(expP)
-register expressionS *expP;
-{
- register segT retval;
- register char * name1;
- register char * name2;
-
- if ((retval = get_segmented_expression (expP)) == SEG_UNKNOWN)
+#ifndef NO_LISTING
+#ifdef OBJ_ELF
+ /* In ELF, when gcc is emitting DWARF 1 debugging output, it
+ will emit .string with a filename in the .debug section
+ after a sequence of constants. See the comment in
+ emit_expr for the sequence. emit_expr will set
+ dwarf_file_string to non-zero if this string might be a
+ source file name. */
+ if (strcmp (segment_name (now_seg), ".debug") != 0)
+ dwarf_file_string = 0;
+ else if (dwarf_file_string)
{
- name1 = expP->X_add_symbol ? S_GET_NAME(expP->X_add_symbol) : "";
- name2 = expP->X_subtract_symbol ?
- S_GET_NAME(expP->X_subtract_symbol) :
- "";
- if (name1 && name2)
- {
- as_warn("Symbols \"%s\" \"%s\" are undefined: absolute 0 assumed.",
- name1, name2);
- }
- else
- {
- as_warn("Symbol \"%s\" undefined: absolute 0 assumed.",
- name1 ? name1 : name2);
- }
- retval = expP->X_seg = SEG_ABSOLUTE;
- expP->X_add_number = 0;
- expP->X_add_symbol = expP->X_subtract_symbol = NULL;
+ c = input_line_pointer[-1];
+ input_line_pointer[-1] = '\0';
+ listing_source_file (start);
+ input_line_pointer[-1] = c;
}
-#ifndef MANY_SEGMENTS
- know(retval == SEG_ABSOLUTE || retval == SEG_DATA || retval == SEG_TEXT || retval == SEG_BSS || retval == SEG_DIFFERENCE);
#endif
- return (retval);
-
-} /* get_known_segmented_expression() */
+#endif
+
+ break;
+ case '<':
+ input_line_pointer++;
+ c = get_single_number ();
+ FRAG_APPEND_1_CHAR (c);
+ if (*input_line_pointer != '>')
+ {
+ as_bad (_("expected <nn>"));
+ }
+ input_line_pointer++;
+ break;
+ case ',':
+ input_line_pointer++;
+ break;
+ }
+ SKIP_WHITESPACE ();
+ c = *input_line_pointer;
+ }
+ 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
+ multibyte chars, wide chars, etc. Also be careful about
+ returning values bigger than 1 byte. xoxorich. */
+
+unsigned int
+next_char_of_string ()
+{
+ register unsigned int c;
+
+ c = *input_line_pointer++ & CHAR_MASK;
+ switch (c)
+ {
+ case '\"':
+ c = NOT_A_CHAR;
+ break;
+
+ case '\n':
+ as_warn (_("unterminated string; newline inserted"));
+ bump_line_counters ();
+ break;
+
+#ifndef NO_STRING_ESCAPES
+ case '\\':
+ switch (c = *input_line_pointer++)
+ {
+ case 'b':
+ c = '\b';
+ break;
+
+ case 'f':
+ c = '\f';
+ break;
+
+ case 'n':
+ c = '\n';
+ break;
+
+ case 'r':
+ c = '\r';
+ break;
+
+ case 't':
+ c = '\t';
+ break;
+
+ case 'v':
+ c = '\013';
+ break;
+
+ case '\\':
+ case '"':
+ break; /* As itself. */
+
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ {
+ long number;
+ int i;
+
+ for (i = 0, number = 0;
+ ISDIGIT (c) && i < 3;
+ c = *input_line_pointer++, i++)
+ {
+ number = number * 8 + c - '0';
+ }
+ c = number & 0xff;
+ }
+ --input_line_pointer;
+ break;
-/* static */ long /* JF was static, but can't be if the MD pseudos are to use it */
- get_absolute_expression ()
+ case 'x':
+ case 'X':
+ {
+ long number;
+
+ number = 0;
+ c = *input_line_pointer++;
+ while (ISXDIGIT (c))
+ {
+ if (ISDIGIT (c))
+ number = number * 16 + c - '0';
+ else if (ISUPPER (c))
+ number = number * 16 + c - 'A' + 10;
+ else
+ number = number * 16 + c - 'a' + 10;
+ c = *input_line_pointer++;
+ }
+ c = number & 0xff;
+ --input_line_pointer;
+ }
+ break;
+
+ case '\n':
+ /* To be compatible with BSD 4.2 as: give the luser a linefeed!! */
+ as_warn (_("unterminated string; newline inserted"));
+ c = '\n';
+ bump_line_counters ();
+ break;
+
+ default:
+
+#ifdef ONLY_STANDARD_ESCAPES
+ as_bad (_("bad escaped character in string"));
+ c = '?';
+#endif /* ONLY_STANDARD_ESCAPES */
+
+ break;
+ }
+ break;
+#endif /* ! defined (NO_STRING_ESCAPES) */
+
+ default:
+ break;
+ }
+ return (c);
+}
+\f
+static segT
+get_segmented_expression (expP)
+ register expressionS *expP;
{
- expressionS exp;
- register segT s;
-
- if ((s = expression(& exp)) != SEG_ABSOLUTE)
- {
- if (s != SEG_ABSENT)
- {
- as_bad("Bad Absolute Expression, absolute 0 assumed.");
- }
- exp . X_add_number = 0;
- }
- return (exp . X_add_number);
+ register segT retval;
+
+ retval = expression (expP);
+ if (expP->X_op == O_illegal
+ || expP->X_op == O_absent
+ || expP->X_op == O_big)
+ {
+ as_bad (_("expected address expression"));
+ expP->X_op = O_constant;
+ expP->X_add_number = 0;
+ retval = absolute_section;
+ }
+ return retval;
+}
+
+static segT
+get_known_segmented_expression (expP)
+ register expressionS *expP;
+{
+ register segT retval;
+
+ if ((retval = get_segmented_expression (expP)) == undefined_section)
+ {
+ /* There is no easy way to extract the undefined symbol from the
+ expression. */
+ if (expP->X_add_symbol != NULL
+ && S_GET_SEGMENT (expP->X_add_symbol) != expr_section)
+ as_warn (_("symbol \"%s\" undefined; zero assumed"),
+ S_GET_NAME (expP->X_add_symbol));
+ else
+ as_warn (_("some symbol undefined; zero assumed"));
+ retval = absolute_section;
+ expP->X_op = O_constant;
+ expP->X_add_number = 0;
+ }
+ know (retval == absolute_section || SEG_NORMAL (retval));
+ return (retval);
}
-char /* return terminator */
- get_absolute_expression_and_terminator(val_pointer)
-long * val_pointer; /* return value of expression */
+offsetT
+get_absolute_expr (exp)
+ expressionS *exp;
{
- * val_pointer = get_absolute_expression ();
- return (* input_line_pointer ++);
+ expression (exp);
+ if (exp->X_op != O_constant)
+ {
+ if (exp->X_op != O_absent)
+ as_bad (_("bad or irreducible absolute expression"));
+ exp->X_add_number = 0;
+ }
+ return exp->X_add_number;
+}
+
+offsetT
+get_absolute_expression ()
+{
+ expressionS exp;
+
+ return get_absolute_expr (&exp);
+}
+
+char /* Return terminator. */
+get_absolute_expression_and_terminator (val_pointer)
+ long *val_pointer; /* Return value of expression. */
+{
+ /* FIXME: val_pointer should probably be offsetT *. */
+ *val_pointer = (long) get_absolute_expression ();
+ return (*input_line_pointer++);
}
\f
-/*
- * demand_copy_C_string()
- *
- * Like demand_copy_string, but return NULL if the string contains any '\0's.
- * Give a warning if that happens.
- */
+/* Like demand_copy_string, but return NULL if the string contains any '\0's.
+ Give a warning if that happens. */
+
char *
- demand_copy_C_string (len_pointer)
-int * len_pointer;
+demand_copy_C_string (len_pointer)
+ int *len_pointer;
{
- register char * s;
-
- if ((s = demand_copy_string(len_pointer)) != 0)
+ register char *s;
+
+ if ((s = demand_copy_string (len_pointer)) != 0)
+ {
+ register int len;
+
+ for (len = *len_pointer; len > 0; len--)
+ {
+ if (*s == 0)
{
- register int len;
-
- for (len = * len_pointer;
- len > 0;
- len--)
- {
- if (* s == 0)
- {
- s = 0;
- len = 1;
- * len_pointer = 0;
- as_bad("This string may not contain \'\\0\'");
- }
- }
+ s = 0;
+ len = 1;
+ *len_pointer = 0;
+ as_bad (_("this string may not contain \'\\0\'"));
}
- return (s);
+ }
+ }
+
+ return s;
}
\f
-/*
- * demand_copy_string()
- *
- * Demand string, but return a safe (=private) copy of the string.
- * Return NULL if we can't read a string here.
- */
-static char *demand_copy_string(lenP)
-int *lenP;
-{
- register unsigned int c;
- register int len;
- char *retval;
-
- len = 0;
- SKIP_WHITESPACE();
- if (*input_line_pointer == '\"') {
- input_line_pointer++; /* Skip opening quote. */
-
- while (is_a_char(c = next_char_of_string())) {
- obstack_1grow(¬es, c);
- len ++;
- }
- /* JF this next line is so demand_copy_C_string will return a null
- termanated string. */
- obstack_1grow(¬es,'\0');
- retval=obstack_finish(¬es);
- } else {
- as_warn("Missing string");
- retval = NULL;
- ignore_rest_of_line();
- }
- *lenP = len;
- return(retval);
-} /* demand_copy_string() */
+/* Demand string, but return a safe (=private) copy of the string.
+ Return NULL if we can't read a string here. */
+
+char *
+demand_copy_string (lenP)
+ int *lenP;
+{
+ register unsigned int c;
+ register int len;
+ char *retval;
+
+ len = 0;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == '\"')
+ {
+ input_line_pointer++; /* Skip opening quote. */
+
+ while (is_a_char (c = next_char_of_string ()))
+ {
+ obstack_1grow (¬es, c);
+ len++;
+ }
+ /* JF this next line is so demand_copy_C_string will return a
+ null terminated string. */
+ obstack_1grow (¬es, '\0');
+ retval = obstack_finish (¬es);
+ }
+ else
+ {
+ as_warn (_("missing string"));
+ retval = NULL;
+ ignore_rest_of_line ();
+ }
+ *lenP = len;
+ return (retval);
+}
\f
-/*
- * is_it_end_of_statement()
- *
- * In: Input_line_pointer->next character.
- *
- * Do: Skip input_line_pointer over all whitespace.
- *
- * Out: 1 if input_line_pointer->end-of-line.
- */
-int is_it_end_of_statement() {
- SKIP_WHITESPACE();
- return (is_end_of_line [* input_line_pointer]);
-} /* is_it_end_of_statement() */
-
-void equals(sym_name)
-char *sym_name;
-{
- register symbolS *symbolP; /* symbol we are working with */
-
- input_line_pointer++;
- if (*input_line_pointer=='=')
- input_line_pointer++;
-
- while(*input_line_pointer==' ' || *input_line_pointer=='\t')
- input_line_pointer++;
-
- if (sym_name[0]=='.' && sym_name[1]=='\0') {
- /* Turn '. = mumble' into a .org mumble */
- register segT segment;
- expressionS exp;
- register char *p;
-
- segment = get_known_segmented_expression(& exp);
- if (! need_pass_2) {
- if (segment != now_seg && segment != SEG_ABSOLUTE)
- as_warn("Illegal segment \"%s\". Segment \"%s\" assumed.",
- segment_name(segment),
- segment_name(now_seg));
- p = frag_var(rs_org, 1, 1, (relax_substateT)0, exp.X_add_symbol,
- exp.X_add_number, (char *)0);
- * p = 0;
- } /* if (ok to make frag) */
- } else {
- symbolP=symbol_find_or_make(sym_name);
- pseudo_set(symbolP);
- }
-} /* equals() */
-
-/* .include -- include a file at this point. */
-
-/* ARGSUSED */
-void s_include(arg)
-int arg;
-{
- char *newbuf;
- char *filename;
- int i;
- FILE *try;
- char *path;
-
- filename = demand_copy_string(&i);
- demand_empty_rest_of_line();
- path = xmalloc(i + include_dir_maxlen + 5 /* slop */);
- for (i = 0; i < include_dir_count; i++) {
- strcpy(path, include_dirs[i]);
- strcat(path, "/");
- strcat(path, filename);
- if (0 != (try = fopen(path, "r")))
- {
- fclose (try);
- goto gotit;
- }
+/* In: Input_line_pointer->next character.
+
+ Do: Skip input_line_pointer over all whitespace.
+
+ Out: 1 if input_line_pointer->end-of-line. */
+
+int
+is_it_end_of_statement ()
+{
+ SKIP_WHITESPACE ();
+ return (is_end_of_line[(unsigned char) *input_line_pointer]);
+}
+
+void
+equals (sym_name, reassign)
+ char *sym_name;
+ int reassign;
+{
+ register symbolS *symbolP; /* Symbol we are working with. */
+ char *stop = NULL;
+ char stopc;
+
+ input_line_pointer++;
+ if (*input_line_pointer == '=')
+ input_line_pointer++;
+
+ while (*input_line_pointer == ' ' || *input_line_pointer == '\t')
+ input_line_pointer++;
+
+ if (flag_mri)
+ stop = mri_comment_field (&stopc);
+
+ if (sym_name[0] == '.' && sym_name[1] == '\0')
+ {
+ /* Turn '. = mumble' into a .org mumble. */
+ register segT segment;
+ expressionS exp;
+
+ segment = get_known_segmented_expression (&exp);
+ if (!need_pass_2)
+ do_org (segment, &exp, 0);
+ }
+ else
+ {
+#ifdef OBJ_COFF
+ int local;
+
+ symbolP = symbol_find (sym_name);
+ local = symbolP == NULL;
+ if (local)
+#endif /* OBJ_COFF */
+ symbolP = symbol_find_or_make (sym_name);
+ /* Permit register names to be redefined. */
+ if (!reassign
+ && S_IS_DEFINED (symbolP)
+ && S_GET_SEGMENT (symbolP) != reg_section)
+ as_bad (_("symbol `%s' is already defined"), S_GET_NAME (symbolP));
+
+#ifdef OBJ_COFF
+ /* "set" symbols are local unless otherwise specified. */
+ if (local)
+ SF_SET_LOCAL (symbolP);
+#endif /* OBJ_COFF */
+
+ pseudo_set (symbolP);
+ }
+
+ if (flag_mri)
+ {
+ /* Check garbage after the expression. */
+ ignore_rest_of_line ();
+ mri_comment_end (stop, stopc);
+ }
+}
+
+/* .incbin -- include a file verbatim at the current location. */
+
+void
+s_incbin (x)
+ int x ATTRIBUTE_UNUSED;
+{
+ FILE * binfile;
+ char * path;
+ char * filename;
+ char * binfrag;
+ long skip = 0;
+ long count = 0;
+ long bytes;
+ int len;
+
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
+ SKIP_WHITESPACE ();
+ filename = demand_copy_string (& len);
+ if (filename == NULL)
+ return;
+
+ SKIP_WHITESPACE ();
+
+ /* Look for optional skip and count. */
+ if (* input_line_pointer == ',')
+ {
+ ++ input_line_pointer;
+ skip = get_absolute_expression ();
+
+ SKIP_WHITESPACE ();
+
+ if (* input_line_pointer == ',')
+ {
+ ++ input_line_pointer;
+
+ count = get_absolute_expression ();
+ if (count == 0)
+ as_warn (_(".incbin count zero, ignoring `%s'"), filename);
+
+ SKIP_WHITESPACE ();
+ }
+ }
+
+ demand_empty_rest_of_line ();
+
+ /* Try opening absolute path first, then try include dirs. */
+ binfile = fopen (filename, FOPEN_RB);
+ if (binfile == NULL)
+ {
+ int i;
+
+ path = xmalloc ((unsigned long) len + include_dir_maxlen + 5);
+
+ for (i = 0; i < include_dir_count; i++)
+ {
+ sprintf (path, "%s/%s", include_dirs[i], filename);
+
+ binfile = fopen (path, FOPEN_RB);
+ if (binfile != NULL)
+ break;
+ }
+
+ if (binfile == NULL)
+ as_bad (_("file not found: %s"), filename);
+ }
+ else
+ path = xstrdup (filename);
+
+ if (binfile)
+ {
+ long file_len;
+
+ register_dependency (path);
+
+ /* Compute the length of the file. */
+ if (fseek (binfile, 0, SEEK_END) != 0)
+ {
+ as_bad (_("seek to end of .incbin file failed `%s'"), path);
+ goto done;
+ }
+ file_len = ftell (binfile);
+
+ /* If a count was not specified use the size of the file. */
+ if (count == 0)
+ count = file_len;
+
+ if (skip + count > file_len)
+ {
+ as_bad (_("skip (%ld) + count (%ld) larger than file size (%ld)"),
+ skip, count, file_len);
+ goto done;
+ }
+
+ if (fseek (binfile, skip, SEEK_SET) != 0)
+ {
+ as_bad (_("could not skip to %ld in file `%s'"), skip, path);
+ goto done;
}
- free(path);
- path = filename;
- gotit:
- /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
- newbuf = input_scrub_include_file (path, input_line_pointer);
- buffer_limit = input_scrub_next_buffer (&input_line_pointer);
-} /* s_include() */
-void add_include_dir(path)
-char *path;
+ /* Allocate frag space and store file contents in it. */
+ binfrag = frag_more (count);
+
+ bytes = fread (binfrag, 1, count, binfile);
+ if (bytes < count)
+ as_warn (_("truncated file `%s', %ld of %ld bytes read"),
+ path, bytes, count);
+ }
+done:
+ if (binfile != NULL)
+ fclose (binfile);
+ if (path)
+ free (path);
+}
+
+/* .include -- include a file at this point. */
+
+void
+s_include (arg)
+ int arg ATTRIBUTE_UNUSED;
{
- int i;
-
- if (include_dir_count == 0)
- {
- include_dirs = (char **)xmalloc (2 * sizeof (*include_dirs));
- include_dirs[0] = "."; /* Current dir */
- include_dir_count = 2;
- }
- else
+ char *filename;
+ int i;
+ FILE *try;
+ char *path;
+
+ if (!flag_m68k_mri)
+ {
+ filename = demand_copy_string (&i);
+ if (filename == NULL)
+ {
+ /* demand_copy_string has already printed an error and
+ called ignore_rest_of_line. */
+ return;
+ }
+ }
+ else
+ {
+ SKIP_WHITESPACE ();
+ i = 0;
+ while (!is_end_of_line[(unsigned char) *input_line_pointer]
+ && *input_line_pointer != ' '
+ && *input_line_pointer != '\t')
+ {
+ obstack_1grow (¬es, *input_line_pointer);
+ ++input_line_pointer;
+ ++i;
+ }
+
+ obstack_1grow (¬es, '\0');
+ filename = obstack_finish (¬es);
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
+ ++input_line_pointer;
+ }
+
+ demand_empty_rest_of_line ();
+ path = xmalloc ((unsigned long) i + include_dir_maxlen + 5 /* slop */ );
+
+ for (i = 0; i < include_dir_count; i++)
+ {
+ strcpy (path, include_dirs[i]);
+ strcat (path, "/");
+ strcat (path, filename);
+ if (0 != (try = fopen (path, FOPEN_RT)))
+ {
+ fclose (try);
+ goto gotit;
+ }
+ }
+
+ free (path);
+ path = filename;
+gotit:
+ /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
+ register_dependency (path);
+ input_scrub_insert_file (path);
+}
+
+void
+add_include_dir (path)
+ char *path;
+{
+ int i;
+
+ if (include_dir_count == 0)
+ {
+ include_dirs = (char **) xmalloc (2 * sizeof (*include_dirs));
+ include_dirs[0] = "."; /* Current dir. */
+ include_dir_count = 2;
+ }
+ else
+ {
+ include_dir_count++;
+ include_dirs =
+ (char **) realloc (include_dirs,
+ include_dir_count * sizeof (*include_dirs));
+ }
+
+ include_dirs[include_dir_count - 1] = path; /* New one. */
+
+ i = strlen (path);
+ if (i > include_dir_maxlen)
+ include_dir_maxlen = i;
+}
+\f
+/* Output debugging information to denote the source file. */
+
+static void
+generate_file_debug ()
+{
+ if (debug_type == DEBUG_STABS)
+ stabs_generate_asm_file ();
+}
+
+/* Output line number debugging information for the current source line. */
+
+void
+generate_lineno_debug ()
+{
+ switch (debug_type)
+ {
+ case DEBUG_UNSPECIFIED:
+ case DEBUG_NONE:
+ case DEBUG_DWARF:
+ break;
+ case DEBUG_STABS:
+ stabs_generate_asm_lineno ();
+ break;
+ case DEBUG_ECOFF:
+ ecoff_generate_asm_lineno ();
+ break;
+ case DEBUG_DWARF2:
+ /* ??? We could here indicate to dwarf2dbg.c that something
+ has changed. However, since there is additional backend
+ support that is required (calling dwarf2_emit_insn), we
+ let dwarf2dbg.c call as_where on its own. */
+ break;
+ }
+}
+
+/* Output debugging information to mark a function entry point or end point.
+ END_P is zero for .func, and non-zero for .endfunc. */
+
+void
+s_func (end_p)
+ int end_p;
+{
+ do_s_func (end_p, NULL);
+}
+
+/* Subroutine of s_func so targets can choose a different default prefix.
+ If DEFAULT_PREFIX is NULL, use the target's "leading char". */
+
+void
+do_s_func (end_p, default_prefix)
+ int end_p;
+ const char *default_prefix;
+{
+ /* Record the current function so that we can issue an error message for
+ misplaced .func,.endfunc, and also so that .endfunc needs no
+ arguments. */
+ static char *current_name;
+ static char *current_label;
+
+ if (end_p)
+ {
+ if (current_name == NULL)
+ {
+ as_bad (_("missing .func"));
+ ignore_rest_of_line ();
+ return;
+ }
+
+ if (debug_type == DEBUG_STABS)
+ stabs_generate_asm_endfunc (current_name, current_label);
+
+ current_name = current_label = NULL;
+ }
+ else /* ! end_p */
+ {
+ char *name, *label;
+ char delim1, delim2;
+
+ if (current_name != NULL)
+ {
+ as_bad (_(".endfunc missing for previous .func"));
+ ignore_rest_of_line ();
+ return;
+ }
+
+ name = input_line_pointer;
+ delim1 = get_symbol_end ();
+ name = xstrdup (name);
+ *input_line_pointer = delim1;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer != ',')
+ {
+ if (default_prefix)
+ asprintf (&label, "%s%s", default_prefix, name);
+ else
{
- include_dir_count++;
- include_dirs = (char **) realloc(include_dirs,
- include_dir_count*sizeof (*include_dirs));
+ char leading_char = 0;
+#ifdef BFD_ASSEMBLER
+ leading_char = bfd_get_symbol_leading_char (stdoutput);
+#endif
+ /* Missing entry point, use function's name with the leading
+ char prepended. */
+ if (leading_char)
+ asprintf (&label, "%c%s", leading_char, name);
+ else
+ label = name;
}
-
- include_dirs[include_dir_count-1] = path; /* New one */
-
- i = strlen (path);
- if (i > include_dir_maxlen)
- include_dir_maxlen = i;
-} /* add_include_dir() */
-
-void s_ignore(arg)
-int arg;
-{
- extern char is_end_of_line[];
-
- while (!is_end_of_line[*input_line_pointer]) {
- ++input_line_pointer;
}
- ++input_line_pointer;
-
- return;
-} /* s_ignore() */
-
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
-
-/* end of read.c */
+ else
+ {
+ ++input_line_pointer;
+ SKIP_WHITESPACE ();
+ label = input_line_pointer;
+ delim2 = get_symbol_end ();
+ label = xstrdup (label);
+ *input_line_pointer = delim2;
+ }
+
+ if (debug_type == DEBUG_STABS)
+ stabs_generate_asm_func (name, label);
+
+ current_name = name;
+ current_label = label;
+ }
+
+ demand_empty_rest_of_line ();
+}
+\f
+void
+s_ignore (arg)
+ int arg ATTRIBUTE_UNUSED;
+{
+ while (!is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ ++input_line_pointer;
+ }
+ ++input_line_pointer;
+}
+
+void
+read_print_statistics (file)
+ FILE *file;
+{
+ hash_print_statistics (file, "pseudo-op table", po_hash);
+}
+
+/* Inserts the given line into the input stream.
+
+ This call avoids macro/conditionals nesting checking, since the contents of
+ the line are assumed to replace the contents of a line already scanned.
+
+ An appropriate use of this function would be substition of input lines when
+ called by md_start_line_hook(). The given line is assumed to already be
+ properly scrubbed. */
+
+void
+input_scrub_insert_line (line)
+ const char *line;
+{
+ sb newline;
+ sb_new (&newline);
+ sb_add_string (&newline, line);
+ input_scrub_include_sb (&newline, input_line_pointer, 0);
+ sb_kill (&newline);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
+
+/* Insert a file into the input stream; the path must resolve to an actual
+ file; no include path searching or dependency registering is performed. */
+
+void
+input_scrub_insert_file (path)
+ char *path;
+{
+ input_scrub_include_file (path, input_line_pointer);
+ buffer_limit = input_scrub_next_buffer (&input_line_pointer);
+}
projects / deliverable / binutils-gdb.git / blobdiff