/* Generic stabs parsing for gas.
- Copyright (C) 1989, 1990, 1991, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1989, 90, 91, 93, 94, 95, 96, 97, 98, 1999
+ Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
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. */
+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. */
#include "as.h"
-#include "libiberty.h"
#include "obstack.h"
#include "subsegs.h"
+#include "ecoff.h"
/* We need this, despite the apparent object format dependency, since
it defines stab types, which all object formats can use now. */
#include "aout/stab_gnu.h"
+static void s_stab_generic PARAMS ((int, char *, char *));
+static void generate_asm_file PARAMS ((int, char *));
+
/* Allow backends to override the names used for the stab sections. */
#ifndef STAB_SECTION_NAME
#define STAB_SECTION_NAME ".stab"
#define STAB_STRING_SECTION_NAME ".stabstr"
#endif
+/* Non-zero if we're in the middle of a .func function, in which case
+ stabs_generate_asm_lineno emits function relative line number stabs.
+ Otherwise it emits line number stabs with absolute addresses. Note that
+ both cases only apply to assembler code assembled with -gstabs. */
+static int in_dot_func_p;
+
+/* Label at start of current function if in_dot_func_p != 0. */
+static const char *current_function_label;
+
/*
* Handle .stabX directives, which used to be open-coded.
* So much creeping featurism overloaded the semantics that we decided
{
unsigned int length;
unsigned int retval;
+ segT save_seg;
+ subsegT save_subseg;
+ segT seg;
+ char *p;
if (! SEPARATE_STAB_SECTIONS)
abort ();
- retval = 0;
length = strlen (string);
- if (length > 0)
- { /* Ordinary case. */
- segT save_seg;
- subsegT save_subseg;
- segT seg;
- char *p;
- save_seg = now_seg;
- save_subseg = now_subseg;
+ save_seg = now_seg;
+ save_subseg = now_subseg;
- /* Create the stab string section. */
- seg = subseg_new (stabstr_secname, 0);
+ /* Create the stab string section. */
+ seg = subseg_new (stabstr_secname, 0);
- retval = seg_info (seg)->stabu.stab_string_size;
- if (retval <= 0)
- {
- /* Make sure the first string is empty. */
- p = frag_more (1);
- *p = 0;
- retval = seg_info (seg)->stabu.stab_string_size = 1;
+ retval = seg_info (seg)->stabu.stab_string_size;
+ if (retval <= 0)
+ {
+ /* Make sure the first string is empty. */
+ p = frag_more (1);
+ *p = 0;
+ retval = seg_info (seg)->stabu.stab_string_size = 1;
#ifdef BFD_ASSEMBLER
- bfd_set_section_flags (stdoutput, seg, SEC_READONLY | SEC_DEBUGGING);
- if (seg->name == stabstr_secname)
- seg->name = xstrdup (stabstr_secname);
+ bfd_set_section_flags (stdoutput, seg, SEC_READONLY | SEC_DEBUGGING);
+ if (seg->name == stabstr_secname)
+ seg->name = xstrdup (stabstr_secname);
#endif
- }
+ }
+ if (length > 0)
+ { /* Ordinary case. */
p = frag_more (length + 1);
strcpy (p, string);
seg_info (seg)->stabu.stab_string_size += length + 1;
-
- subseg_set (save_seg, save_subseg);
}
+ else
+ retval = 0;
+
+ subseg_set (save_seg, save_subseg);
return retval;
}
#define OBJ_PROCESS_STAB(SEG,W,S,T,O,D) aout_process_stab(W,S,T,O,D)
#endif
+static void aout_process_stab PARAMS ((int, const char *, int, int, int));
+
static void
aout_process_stab (what, string, type, other, desc)
int what;
if (what == 's' || what == 'n')
{
/* Pick up the value from the input line. */
- symbol->sy_frag = &zero_address_frag;
+ symbol_set_frag (symbol, &zero_address_frag);
pseudo_set (symbol);
}
else
{
/* .stabd sets the name to NULL. Why? */
S_SET_NAME (symbol, NULL);
- symbol->sy_frag = frag_now;
+ symbol_set_frag (symbol, frag_now);
S_SET_VALUE (symbol, (valueT) frag_now_fix ());
}
input_line_pointer++;
else
{
- as_warn (".stabs: Missing comma");
+ as_warn (_(".stabs: Missing comma"));
ignore_rest_of_line ();
return;
}
if (get_absolute_expression_and_terminator (&longint) != ',')
{
- as_warn (".stab%c: Missing comma", what);
+ as_warn (_(".stab%c: Missing comma"), what);
ignore_rest_of_line ();
return;
}
if (get_absolute_expression_and_terminator (&longint) != ',')
{
- as_warn (".stab%c: Missing comma", what);
+ as_warn (_(".stab%c: Missing comma"), what);
ignore_rest_of_line ();
return;
}
{
if (*input_line_pointer != ',')
{
- as_warn (".stab%c: Missing comma", what);
+ as_warn (_(".stab%c: Missing comma"), what);
ignore_rest_of_line ();
return;
}
SKIP_WHITESPACE ();
}
+#ifdef TC_PPC
+#ifdef OBJ_ELF
+ /* Solaris on PowerPC has decided that .stabd can take 4 arguments, so if we were
+ given 4 arguments, make it a .stabn */
+ else if (what == 'd')
+ {
+ char *save_location = input_line_pointer;
+
+ SKIP_WHITESPACE ();
+ if (*input_line_pointer == ',')
+ {
+ input_line_pointer++;
+ what = 'n';
+ }
+ else
+ input_line_pointer = save_location;
+ }
+#endif /* OBJ_ELF */
+#endif /* TC_PPC */
+
+#ifndef NO_LISTING
+ if (listing)
+ {
+ switch (type)
+ {
+ case N_SLINE:
+ listing_source_line ((unsigned int) desc);
+ break;
+ case N_SO:
+ case N_SOL:
+ listing_source_file (string);
+ break;
+ }
+ }
+#endif /* ! NO_LISTING */
+
/* We have now gathered the type, other, and desc information. For
.stabs or .stabn, input_line_pointer is now pointing at the
value. */
dot = frag_now_fix ();
+#ifdef md_flush_pending_output
+ md_flush_pending_output ();
+#endif
+
if (cached_secname && !strcmp (cached_secname, stab_secname))
{
seg = cached_sec;
}
#ifdef OBJ_PROCESS_STAB
- OBJ_PROCESS_STAB (seg, what, string + stroff, type, other, desc);
+ OBJ_PROCESS_STAB (seg, what, string, type, other, desc);
#endif
subseg_set (saved_seg, saved_subseg);
#endif
}
-#ifndef NO_LISTING
- if (listing)
- {
- switch (type)
- {
- case N_SLINE:
- listing_source_line ((unsigned int) desc);
- break;
- case N_SO:
- case N_SOL:
- listing_source_file (string);
- break;
- }
- }
-#endif /* ! NO_LISTING */
-
demand_empty_rest_of_line ();
}
input_line_pointer++;
else
{
- as_bad ("comma missing in .xstabs");
+ as_bad (_("comma missing in .xstabs"));
ignore_rest_of_line ();
return;
}
if (*input_line_pointer != ',')
{
*p = 0;
- as_bad ("Expected comma after name \"%s\"", name);
+ as_bad (_("Expected comma after name \"%s\""), name);
*p = c;
ignore_rest_of_line ();
}
} /* s_desc() */
#endif /* defined (S_SET_DESC) */
+
+/* Generate stabs debugging information to denote the main source file. */
+
+void
+stabs_generate_asm_file ()
+{
+ char *file;
+ unsigned int lineno;
+
+ as_where (&file, &lineno);
+ generate_asm_file (N_SO, file);
+}
+
+/* Generate stabs debugging information to denote the source file.
+ TYPE is one of N_SO, N_SOL. */
+
+static void
+generate_asm_file (type, file)
+ int type;
+ char *file;
+{
+ static char *last_file;
+ static int label_count;
+ char *hold;
+ char *buf = xmalloc (2 * strlen (file) + 10);
+ char sym[30];
+
+ /* Rather than try to do this in some efficient fashion, we just
+ generate a string and then parse it again. That lets us use the
+ existing stabs hook, which expect to see a string, rather than
+ inventing new ones. */
+
+ hold = input_line_pointer;
+
+ if (last_file == NULL
+ || strcmp (last_file, file) != 0)
+ {
+ char *tmp = file;
+ char *endp = file + strlen(file);
+ char *bufp = buf;
+
+ sprintf (sym, "%sF%d", FAKE_LABEL_NAME, label_count);
+ ++label_count;
+
+ *bufp++ = '"';
+ while (tmp < endp)
+ {
+ char *bslash = strchr (tmp, '\\');
+ int len = (bslash ? (bslash - tmp + 1) : strlen (tmp));
+ /* double all backslashes, since demand_copy_C_string (used by
+ s_stab to extract the part in quotes) will try to replace them as
+ escape sequences. backslash may appear in a filespec. */
+ strncpy (bufp, tmp, len);
+ tmp += len;
+ bufp += len;
+ if (bslash != NULL)
+ *bufp++ = '\\';
+ }
+ sprintf (bufp, "\",%d,0,0,%s\n", type, sym);
+ input_line_pointer = buf;
+ s_stab ('s');
+ colon (sym);
+
+ if (last_file != NULL)
+ free (last_file);
+ last_file = xstrdup (file);
+ }
+
+ input_line_pointer = hold;
+ free (buf);
+}
+
+/* Generate stabs debugging information for the current line. This is
+ used to produce debugging information for an assembler file. */
+
+void
+stabs_generate_asm_lineno ()
+{
+ static int label_count;
+ char *hold;
+ char *file;
+ unsigned int lineno;
+ char *buf;
+ char sym[30];
+
+ /* Rather than try to do this in some efficient fashion, we just
+ generate a string and then parse it again. That lets us use the
+ existing stabs hook, which expect to see a string, rather than
+ inventing new ones. */
+
+ hold = input_line_pointer;
+
+ as_where (&file, &lineno);
+
+ generate_asm_file (N_SOL, file);
+
+ sprintf (sym, "%sL%d", FAKE_LABEL_NAME, label_count);
+ ++label_count;
+
+ if (in_dot_func_p)
+ {
+ buf = (char *) alloca (100 + strlen (current_function_label));
+ sprintf (buf, "%d,0,%d,%s-%s\n", N_SLINE, lineno,
+ sym, current_function_label);
+ }
+ else
+ {
+ buf = (char *) alloca (100);
+ sprintf (buf, "%d,0,%d,%s\n", N_SLINE, lineno, sym);
+ }
+ input_line_pointer = buf;
+ s_stab ('n');
+ colon (sym);
+
+ input_line_pointer = hold;
+}
+
+/* Emit a function stab.
+ All assembler functions are assumed to have return type `void'. */
+
+void
+stabs_generate_asm_func (funcname, startlabname)
+ const char *funcname;
+ const char *startlabname;
+{
+ static int void_emitted_p;
+ char *hold = input_line_pointer;
+ char *buf;
+ char *file;
+ unsigned int lineno;
+
+ if (! void_emitted_p)
+ {
+ input_line_pointer = "\"void:t1=1\",128,0,0,0";
+ s_stab ('s');
+ void_emitted_p = 1;
+ }
+
+ as_where (&file, &lineno);
+ asprintf (&buf, "\"%s:F1\",%d,0,%d,%s",
+ funcname, N_FUN, lineno + 1, startlabname);
+ input_line_pointer = buf;
+ s_stab ('s');
+ free (buf);
+
+ input_line_pointer = hold;
+ current_function_label = xstrdup (startlabname);
+ in_dot_func_p = 1;
+}
+
+/* Emit a stab to record the end of a function. */
+
+void
+stabs_generate_asm_endfunc (funcname, startlabname)
+ const char *funcname ATTRIBUTE_UNUSED;
+ const char *startlabname;
+{
+ static int label_count;
+ char *hold = input_line_pointer;
+ char *buf;
+ char sym[30];
+
+ sprintf (sym, "%sendfunc%d", FAKE_LABEL_NAME, label_count);
+ ++label_count;
+ colon (sym);
+
+ asprintf (&buf, "\"\",%d,0,0,%s-%s", N_FUN, sym, startlabname);
+ input_line_pointer = buf;
+ s_stab ('s');
+ free (buf);
+
+ input_line_pointer = hold;
+ in_dot_func_p = 0;
+ current_function_label = NULL;
+}
projects / deliverable / binutils-gdb.git / blobdiff