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* read.h (include_dirs): Declare.

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(include_dir_count,include_dir_maxlen): Declare.
This commit is contained in:
Doug Evans 1998-01-30 19:13:17 +00:00
parent 577e9a32f7
commit d341ae3fef
2 changed files with 75 additions and 11 deletions
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5
gas/ChangeLog
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@ -1,3 +1,8 @@
Fri Jan 30 11:02:35 1998 Doug Evans <devans@canuck.cygnus.com>
* read.h (include_dirs): Declare.
(include_dir_count,include_dir_maxlen): Declare.
Fri Jan 30 11:47:02 1998 Ian Lance Taylor <ian@cygnus.com>
* listing.c (buffer_line): If we can't open the file, set at_end.

81
gas/read.c
View file

@ -1,5 +1,5 @@
/* read.c - read a source file -
Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 1997
Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 97, 1998
Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
@ -165,12 +165,12 @@ static char *old_buffer; /* JF a hack */
static char *old_input;
static char *old_limit;
/* Variables for handling include file directory list. */
/* Variables for handling include file directory table. */
char **include_dirs; /* List of pointers to directories to
char **include_dirs; /* Table of pointers to directories to
search for .include's */
int include_dir_count; /* How many are in the list */
int include_dir_maxlen = 1;/* Length of longest in list */
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;
@ -197,6 +197,15 @@ symbolS *mri_common_symbol;
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));
@ -3263,6 +3272,45 @@ emit_expr (exp, nbytes)
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
@ -4328,11 +4376,14 @@ stringer (append_zero) /* Worker to do .ascii etc statements. */
#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_sfnames
section to indicate a file name. I don't know if this
will work for compilers other than gcc, and I don't know
if it will work for DWARF 2. */
if (strcmp (segment_name (now_seg), ".debug_sfnames") == 0)
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';
@ -4699,7 +4750,15 @@ s_include (arg)
char *path;
if (! flag_m68k_mri)
filename = demand_copy_string (&i);
{
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 ();