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authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
commit252b5132c753830d5fd56823373aed85f2a0db63 (patch)
tree1af963bfd8d3e55167b81def4207f175eaff3a56 /gas/read.c
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19990502 sourceware importbinu_ss_19990502
Diffstat (limited to 'gas/read.c')
-rw-r--r--gas/read.c5054
1 files changed, 5054 insertions, 0 deletions
diff --git a/gas/read.c b/gas/read.c
new file mode 100644
index 0000000..7fee241
--- /dev/null
+++ b/gas/read.c
@@ -0,0 +1,5054 @@
+/* read.c - read a source file -
+ Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
+ 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, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+#if 0
+#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.)
+ */
+#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. */
+
+/* for isdigit() */
+#include <ctype.h>
+
+#include "as.h"
+#include "subsegs.h"
+#include "sb.h"
+#include "macro.h"
+#include "obstack.h"
+#include "listing.h"
+#include "ecoff.h"
+
+#ifndef TC_START_LABEL
+#define TC_START_LABEL(x,y) (x==':')
+#endif
+
+/* The NOP_OPCODE is for the alignment fill value.
+ * fill it a nop instruction so that the disassembler does not choke
+ * on it
+ */
+#ifndef NOP_OPCODE
+#define NOP_OPCODE 0x00
+#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!)! */
+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_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, 0, 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.
+ */
+#define Z_ (0)
+char is_end_of_line[256] =
+{
+#ifdef CR_EOL
+ 99, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, 99, Z_, Z_, 99, Z_, Z_, /* @abcdefghijklmno */
+#else
+ 99, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, 99, Z_, Z_, Z_, Z_, Z_, /* @abcdefghijklmno */
+#endif
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+#ifdef TC_HPPA
+ Z_,99, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* _!"#$%&'()*+,-./ */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* 0123456789:;<=>? */
+#else
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, 99, Z_, Z_, Z_, Z_, /* 0123456789:;<=>? */
+#endif
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+ Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, Z_, /* */
+};
+#undef Z_
+
+/* 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;
+
+static char *old_buffer; /* JF a hack */
+static char *old_input;
+static char *old_limit;
+
+/* Variables for handling include file directory table. */
+
+char **include_dirs; /* Table of pointers to directories to
+ search for .include's */
+int include_dir_count; /* How many are in the table */
+int include_dir_maxlen = 1;/* Length of longest in table */
+
+#ifndef WORKING_DOT_WORD
+struct broken_word *broken_words;
+int new_broken_words;
+#endif
+
+/* 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;
+
+/* 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;
+
+/* 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;
+
+/* 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;
+
+#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 **));
+static void do_align PARAMS ((int, char *, int, int));
+static void s_align PARAMS ((int, int));
+static int hex_float PARAMS ((int, char *));
+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));
+
+
+void
+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 (&notes, 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;
+}
+
+/* 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},
+ {"end", s_end, 0},
+ {"endc", s_endif, 0},
+ {"endfunc", s_func, 1},
+ {"endif", s_endif, 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},
+ {"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} /* end sentinel */
+};
+
+static int pop_override_ok = 0;
+static const char *pop_table_name;
+
+void
+pop_insert (table)
+ const pseudo_typeS *table;
+{
+ 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
+
+#ifndef obj_pop_insert
+#define obj_pop_insert() pop_insert(obj_pseudo_table)
+#endif
+
+static void
+pobegin ()
+{
+ po_hash = hash_new ();
+
+ /* 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);
+}
+
+#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; \
+ }
+
+
+/* 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 (from)
+ char **from;
+{
+ int size;
+
+ *from = scrub_string;
+ size = scrub_string_end - scrub_string;
+ scrub_string = scrub_string_end;
+ return size;
+}
+
+/* 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;
+ pseudo_typeS *pop;
+
+ buffer = input_scrub_new_file (name);
+
+ listing_file (name);
+ listing_newline (NULL);
+ register_dependency (name);
+
+ /* 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 ();
+
+ 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 (is_end_of_line[(unsigned char) input_line_pointer[-1]])
+ {
+#ifdef md_start_line_hook
+ md_start_line_hook ();
+#endif
+
+ if (input_line_pointer[-1] == '\n')
+ bump_line_counters ();
+
+ line_label = NULL;
+
+ if (flag_m68k_mri
+#ifdef LABELS_WITHOUT_COLONS
+ || 1
+#endif
+ )
+ {
+ /* 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;
+
+ 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)
+ {
+ 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;
+ }
+ if (strncasecmp (rest, "MACRO", 5) == 0
+ && (rest[5] == ' '
+ || rest[5] == '\t'
+ || is_end_of_line[(unsigned char) rest[5]]))
+ mri_line_macro = 1;
+ }
+
+ /* 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)
+ 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++;
+ }
+ }
+ }
+
+ /*
+ * 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)
+ {
+ 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);
+ }
+#endif
+
+ /*
+ * 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 (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'))
+ {
+ input_line_pointer = rest + 3;
+ equals (s, 1);
+ continue;
+ }
+ }
+
+ line_label = colon (s); /* user-defined label */
+ *input_line_pointer++ = ':'; /* Put ':' back for error messages' sake. */
+ /* 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;
+
+#define IGNORE_OPCODE_CASE
+#ifdef IGNORE_OPCODE_CASE
+ {
+ char *s2 = s;
+ while (*s2)
+ {
+ if (isupper ((unsigned char) *s2))
+ *s2 = tolower (*s2);
+ s2++;
+ }
+ }
+#endif
+
+ if (flag_m68k_mri
+#ifdef NO_PSEUDO_DOT
+ || 1
+#endif
+ )
+ {
+ /* 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)))
+ {
+ do_align (1, (char *) NULL, 0, 0);
+ mri_pending_align = 0;
+ if (line_label != NULL)
+ {
+ line_label->sy_frag = frag_now;
+ S_SET_VALUE (line_label, frag_now_fix ());
+ }
+ }
+
+ /* Print the error msg now, while we still can */
+ if (pop == NULL)
+ {
+ as_bad (_("Unknown pseudo-op: `%s'"), s);
+ *input_line_pointer = c;
+ s_ignore (0);
+ continue;
+ }
+
+ /* 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;
+
+ /* 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
+ )
+ {
+ if (flag_m68k_mri && *input_line_pointer == '\'')
+ inquote = ! inquote;
+ input_line_pointer++;
+ }
+
+ c = *input_line_pointer;
+ *input_line_pointer = '\0';
+
+ generate_lineno_debug ();
+
+ if (macro_defined)
+ {
+ sb out;
+ const char *err;
+
+ if (check_macro (s, &out, '\0', &err))
+ {
+ if (err != NULL)
+ as_bad (err);
+ *input_line_pointer++ = c;
+ input_scrub_include_sb (&out,
+ input_line_pointer);
+ sb_kill (&out);
+ buffer_limit =
+ input_scrub_next_buffer (&input_line_pointer);
+ continue;
+ }
+ }
+
+ if (mri_pending_align)
+ {
+ do_align (1, (char *) NULL, 0, 0);
+ mri_pending_align = 0;
+ if (line_label != NULL)
+ {
+ line_label->sy_frag = 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. */
+ } /* if (*s=='.') */
+ } /* if c==':' */
+ continue;
+ } /* if (is_name_beginner(c) */
+
+
+ /* Empty statement? */
+ if (is_end_of_line[(unsigned char) c])
+ continue;
+
+ if ((LOCAL_LABELS_DOLLAR || LOCAL_LABELS_FB)
+ && isdigit ((unsigned char) c))
+ {
+ /* local label ("4:") */
+ char *backup = input_line_pointer;
+
+ HANDLE_CONDITIONAL_ASSEMBLY ();
+
+ temp = c - '0';
+
+ while (isdigit ((unsigned char) *input_line_pointer))
+ {
+ temp = (temp * 10) + *input_line_pointer - '0';
+ ++input_line_pointer;
+ } /* read the whole number */
+
+ 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 */
+ 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;
+
+ 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;
+ break;
+ }
+
+ 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 ();
+
+#ifdef tc_unrecognized_line
+ if (tc_unrecognized_line (c))
+ continue;
+#endif
+
+ /* 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) */
+
+#ifdef md_after_pass_hook
+ md_after_pass_hook ();
+#endif
+
+ if (old_buffer)
+ {
+ free (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) */
+
+ quit:
+
+#ifdef md_cleanup
+ md_cleanup();
+#endif
+ input_scrub_close (); /* Close the input file */
+}
+
+/* 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;
+{
+#ifdef TC_M68K
+
+ char *s;
+ 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;
+ }
+ *stopcp = *s;
+ *s = '\0';
+ return s;
+
+#else
+
+ char *s;
+
+ for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++)
+ ;
+ *stopcp = *s;
+ *s = '\0';
+ return s;
+
+#endif
+
+}
+
+/* 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;
+{
+ 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;
+{
+ char default_fill;
+
+#ifdef md_do_align
+ md_do_align (n, fill, len, max, just_record_alignment);
+#endif
+
+ if (fill == NULL)
+ {
+ int maybe_text;
+
+#ifdef BFD_ASSEMBLER
+ if ((bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0)
+ maybe_text = 1;
+ else
+ maybe_text = 0;
+#else
+ if (now_seg != data_section && now_seg != bss_section)
+ maybe_text = 1;
+ else
+ maybe_text = 0;
+#endif
+
+ if (maybe_text)
+ default_fill = NOP_OPCODE;
+ else
+ default_fill = 0;
+ fill = &default_fill;
+ len = 1;
+ }
+
+ /* Only make a frag if we HAVE to. . . */
+ if (n != 0 && !need_pass_2)
+ {
+ if (len <= 1)
+ frag_align (n, *fill, max);
+ else
+ frag_align_pattern (n, fill, len, max);
+ }
+
+#ifdef md_do_align
+ just_record_alignment:
+#endif
+
+ record_alignment (now_seg, n);
+}
+
+/* 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_bad (_("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;
+{
+ 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;
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer != ',')
+ {
+ as_bad (_("Expected comma after symbol-name: rest of line ignored."));
+ 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 (_("Ignoring attempt to re-define symbol `%s'."),
+ 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 changed 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;
+{
+ 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 ((unsigned char) *name))
+ c = get_symbol_end ();
+ else
+ {
+ do
+ {
+ ++input_line_pointer;
+ }
+ while (isdigit ((unsigned char) *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 (_("attempt to re-define symbol `%s'"), 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)
+ {
+ line_label->sy_value.X_op = O_symbol;
+ line_label->sy_value.X_add_symbol = sym;
+ line_label->sy_value.X_add_number = S_GET_VALUE (sym);
+ line_label->sy_frag = &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;
+{
+ 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 (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)
+ {
+#ifdef LISTING
+ if (listing)
+ listing_source_file (s);
+#endif
+ register_dependency (s);
+#ifdef obj_app_file
+ obj_app_file (s);
+#endif
+ }
+ }
+}
+
+/* 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;
+{
+ 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;
+{
+ 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;
+{
+ as_bad (_(".err encountered"));
+ demand_empty_rest_of_line ();
+}
+
+/* Handle the MRI fail pseudo-op. */
+
+void
+s_fail (ignore)
+ int ignore;
+{
+ 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;
+{
+ 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 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, (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;
+{
+ 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);
+ *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 ();
+
+ 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, '\0');
+ if (err != NULL)
+ as_bad_where (file, line, "%s", err);
+
+ sb_kill (&s);
+
+ input_scrub_include_sb (&out, input_line_pointer);
+ 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;
+{
+ 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;
+ 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 (*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 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 (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)
+ {
+ /* FIXME. This needs to be machine independent. */
+ if (temp >= 8)
+ align = 3;
+ else if (temp >= 4)
+ align = 2;
+ else if (temp >= 2)
+ align = 1;
+ else
+ align = 0;
+
+#ifdef OBJ_EVAX
+ /* FIXME: This needs to be done in a more general fashion. */
+ align = 3;
+#endif
+
+ 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 (*input_line_pointer == '\n')
+ {
+ 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);
+ } /* if needs 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_BOUT)
+ S_GET_OTHER (symbolP) == 0 &&
+ S_GET_DESC (symbolP) == 0 &&
+#endif /* OBJ_AOUT or OBJ_BOUT */
+ (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)
+ symbolP->sy_frag->fr_symbol = NULL;
+
+ symbolP->sy_frag = 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 (_("Ignoring attempt to re-define symbol `%s'."),
+ S_GET_NAME (symbolP));
+
+ subseg_set (current_seg, current_subseg);
+
+ demand_empty_rest_of_line ();
+} /* s_lcomm_internal() */
+
+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;
+{
+ 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;
+ 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++;
+ 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 already defined"), name);
+ }
+ *p = c;
+ demand_empty_rest_of_line ();
+} /* s_lsym() */
+
+/* Read a line into an sb. */
+
+static int
+get_line_sb (line)
+ sb *line;
+{
+ char quote1, quote2, inquote;
+
+ 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 (! is_end_of_line[(unsigned char) *input_line_pointer]
+ || (inquote != '\0' && *input_line_pointer != '\n'))
+ {
+ if (inquote == *input_line_pointer)
+ inquote = '\0';
+ else if (inquote == '\0')
+ {
+ if (*input_line_pointer == quote1)
+ inquote = quote1;
+ else if (*input_line_pointer == quote2)
+ inquote = quote2;
+ }
+ sb_add_char (line, *input_line_pointer++);
+ }
+ while (input_line_pointer < buffer_limit
+ && is_end_of_line[(unsigned char) *input_line_pointer])
+ {
+ if (input_line_pointer[-1] == '\n')
+ bump_line_counters ();
+ ++input_line_pointer;
+ }
+ return 1;
+}
+
+/* Define a macro. This is an interface to macro.c, which is shared
+ between gas and gasp. */
+
+void
+s_macro (ignore)
+ int ignore;
+{
+ 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);
+ line_label->sy_frag = &zero_address_frag;
+ }
+
+ if (((flag_m68k_mri
+#ifdef NO_PSEUDO_DOT
+ || 1
+#endif
+ )
+ && 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;
+{
+ 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;
+{
+ 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;
+ flag_m68k_mri = 0;
+ 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 \"%s\" assumed"),
+ segment_name (segment), segment_name (now_seg));
+
+ 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;
+
+ p = frag_var (rs_org, 1, 1, (relax_substateT) 0, exp->X_add_symbol,
+ exp->X_add_number, (char *) NULL);
+ *p = fill;
+ }
+}
+
+void
+s_org (ignore)
+ int ignore;
+{
+ 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 ();
+} /* s_org() */
+
+/* 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;
+{
+#ifdef TC_M68K
+
+ char *name;
+ char c;
+ segT seg;
+
+ SKIP_WHITESPACE ();
+
+ name = input_line_pointer;
+ if (! isdigit ((unsigned char) *name))
+ c = get_symbol_end ();
+ else
+ {
+ do
+ {
+ ++input_line_pointer;
+ }
+ while (isdigit ((unsigned char) *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 ((unsigned char) 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;
+{
+ 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;
+{
+ 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_rept (ignore)
+ int ignore;
+{
+ int count;
+ sb one;
+ sb many;
+
+ count = get_absolute_expression ();
+
+ sb_new (&one);
+ if (! buffer_and_nest ("REPT", "ENDR", &one, get_line_sb))
+ {
+ as_bad (_("rept without endr"));
+ return;
+ }
+
+ sb_new (&many);
+ while (count-- > 0)
+ sb_add_sb (&many, &one);
+
+ sb_kill (&one);
+
+ input_scrub_include_sb (&many, input_line_pointer);
+ sb_kill (&many);
+ 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;
+ 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;
+
+ 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 */
+
+ } /* make a new symbol */
+
+ symbol_table_insert (symbolP);
+
+ *end_name = delim;
+
+ if (equiv
+ && S_IS_DEFINED (symbolP)
+ && S_GET_SEGMENT (symbolP) != reg_section)
+ as_bad (_("symbol `%s' already defined"), S_GET_NAME (symbolP));
+
+ pseudo_set (symbolP);
+ demand_empty_rest_of_line ();
+} /* s_set() */
+
+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)
+ {
+ know (line_label->sy_value.X_op == O_symbol);
+ know (line_label->sy_value.X_add_symbol == mri_common_symbol);
+ line_label->sy_value.X_add_number += 1;
+ }
+ }
+ }
+ else
+ {
+ do_align (1, (char *) NULL, 0, 0);
+ if (line_label != NULL)
+ {
+ line_label->sy_frag = 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 ((unsigned char) 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;
+{
+ 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;
+{
+ 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
+} /* s_text() */
+
+
+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. */
+} /* Return pointing just after 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 ((unsigned char) *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[(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]]);
+}
+
+/*
+ * 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;
+ */
+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; zero assumed"));
+ else if (exp.X_op == O_absent)
+ as_bad (_("missing expression; zero assumed"));
+ else if (exp.X_op == O_big)
+ {
+ if (exp.X_add_number > 0)
+ as_bad (_("bignum invalid; zero assumed"));
+ else
+ as_bad (_("floating point number invalid; zero assumed"));
+ }
+ else if (exp.X_op == O_subtract
+ && (S_GET_SEGMENT (exp.X_add_symbol)
+ == S_GET_SEGMENT (exp.X_op_symbol))
+ && SEG_NORMAL (S_GET_SEGMENT (exp.X_add_symbol))
+ && exp.X_add_symbol->sy_frag == exp.X_op_symbol->sy_frag)
+ {
+ 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)
+ symbolP->sy_frag = &zero_address_frag;
+ break;
+
+ case O_register:
+ S_SET_SEGMENT (symbolP, reg_section);
+ S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
+ symbolP->sy_frag = &zero_address_frag;
+ break;
+
+ case O_symbol:
+ if (S_GET_SEGMENT (exp.X_add_symbol) == undefined_section
+ || exp.X_add_number != 0)
+ symbolP->sy_value = exp;
+ 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));
+ symbolP->sy_frag = s->sy_frag;
+ copy_symbol_attributes (symbolP, s);
+ }
+ break;
+
+ default:
+ /* The value is some complex expression.
+ FIXME: Should we set the segment to anything? */
+ symbolP->sy_value = exp;
+ break;
+ }
+}
+
+/*
+ * 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. */
+
+static void
+parse_mri_cons PARAMS ((expressionS *exp, unsigned int nbytes));
+
+#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, 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
+ {
+ if (flag_m68k_mri)
+ parse_mri_cons (&exp, (unsigned int) nbytes);
+ else
+ 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
+ && exp->X_add_symbol->sy_value.X_op == O_big
+ && exp->X_add_symbol->sy_value.X_add_number > 0)
+ {
+ int i;
+ unsigned long carry;
+
+ exp = &exp->X_add_symbol->sy_value;
+
+ /* 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; zero assumed"));
+ 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;
+ 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 > 0)
+ {
+ --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 > 0)
+ {
+ 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 > 0)
+ {
+ 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 */
+ }
+}
+
+#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 */
+
+ hold = ++input_line_pointer; /* skip ':' */
+
+ (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);
+ } /* forever loop */
+
+ exp->X_add_number = value;
+ exp->X_op = O_constant;
+ exp->X_unsigned = 1;
+ } /* if looks like a bitfield */
+} /* parse_bitfield_cons() */
+
+#endif /* BITFIELD_CONS_EXPRESSIONS */
+
+/* Handle an MRI style string expression. */
+
+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++;
+ }
+}
+
+#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 */
+
+/* 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 ((unsigned char) 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++ == ',');
+
+ --input_line_pointer; /* Put terminator back into stream. */
+ demand_empty_rest_of_line ();
+} /* float_cons() */
+
+/* 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 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 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 inline 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;
+
+ 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; zero assumed"));
+ exp->X_add_number = 0;
+ op = O_constant;
+ }
+ else if (op == O_register)
+ {
+ as_warn (_("register value used as expression"));
+ op = O_constant;
+ }
+
+ 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 ();
+}
+
+/*
+ * 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 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. */
+ }
+ 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 ()))
+ {
+ FRAG_APPEND_1_CHAR (c);
+ }
+ if (append_zero)
+ {
+ FRAG_APPEND_1_CHAR (0);
+ }
+ know (input_line_pointer[-1] == '\"');
+
+#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)
+ {
+ c = input_line_pointer[-1];
+ input_line_pointer[-1] = '\0';
+ listing_source_file (start);
+ input_line_pointer[-1] = c;
+ }
+#endif
+#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() */
+
+/* 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;
+
+ 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, '?' assumed"));
+ c = '?';
+#endif /* ONLY_STANDARD_ESCAPES */
+
+ break;
+ } /* switch on escaped char */
+ break;
+#endif /* ! defined (NO_STRING_ESCAPES) */
+
+ default:
+ break;
+ } /* switch on char */
+ return (c);
+} /* next_char_of_string() */
+
+static segT
+get_segmented_expression (expP)
+ register expressionS *expP;
+{
+ 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; zero assumed"));
+ 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);
+} /* get_known_segmented_expression() */
+
+offsetT
+get_absolute_expression ()
+{
+ expressionS exp;
+
+ expression (&exp);
+ if (exp.X_op != O_constant)
+ {
+ if (exp.X_op != O_absent)
+ as_bad (_("bad or irreducible absolute expression; zero assumed"));
+ exp.X_add_number = 0;
+ }
+ return exp.X_add_number;
+}
+
+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++);
+}
+
+/*
+ * demand_copy_C_string()
+ *
+ * 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;
+{
+ register char *s;
+
+ if ((s = demand_copy_string (len_pointer)) != 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\'"));
+ }
+ }
+ }
+ return s;
+}
+
+/*
+ * 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 (&notes, c);
+ len++;
+ }
+ /* JF this next line is so demand_copy_C_string will return a
+ null terminated string. */
+ obstack_1grow (&notes, '\0');
+ retval = obstack_finish (&notes);
+ }
+ else
+ {
+ as_warn (_("Missing string"));
+ retval = NULL;
+ ignore_rest_of_line ();
+ }
+ *lenP = len;
+ return (retval);
+} /* demand_copy_string() */
+
+/*
+ * 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[(unsigned char) *input_line_pointer]);
+} /* is_it_end_of_statement() */
+
+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
+ {
+ 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' already defined"), S_GET_NAME (symbolP));
+ pseudo_set (symbolP);
+ }
+
+ if (flag_mri)
+ {
+ ignore_rest_of_line (); /* check garbage after the expression */
+ mri_comment_end (stop, stopc);
+ }
+} /* 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;
+
+ 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 (&notes, *input_line_pointer);
+ ++input_line_pointer;
+ ++i;
+ }
+ obstack_1grow (&notes, '\0');
+ filename = obstack_finish (&notes);
+ 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, "r")))
+ {
+ fclose (try);
+ goto gotit;
+ }
+ }
+ free (path);
+ path = filename;
+gotit:
+ /* malloc Storage leak when file is found on path. FIXME-SOMEDAY. */
+ register_dependency (path);
+ 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;
+{
+ 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;
+} /* add_include_dir() */
+
+/* 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 ()
+{
+#ifdef ECOFF_DEBUGGING
+ /* ECOFF assemblers automatically generate debugging information.
+ FIXME: This should probably be handled elsewhere. */
+ if (debug_type == DEBUG_UNSPECIFIED)
+ {
+ if (ECOFF_DEBUGGING && ecoff_no_current_file ())
+ debug_type = DEBUG_ECOFF;
+ else
+ debug_type = DEBUG_NONE;
+ }
+#endif
+
+ switch (debug_type)
+ {
+ case DEBUG_UNSPECIFIED:
+ case DEBUG_NONE:
+ break;
+ case DEBUG_STABS:
+ stabs_generate_asm_lineno ();
+ break;
+ case DEBUG_ECOFF:
+ ecoff_generate_asm_lineno ();
+ break;
+ case DEBUG_DWARF:
+ case DEBUG_DWARF2:
+ /* FIXME. */
+ 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
+ {
+ 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;
+ }
+ }
+ 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 ();
+}
+
+void
+s_ignore (arg)
+ int arg;
+{
+ 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);
+}
+
+/* end of read.c */