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* config/tc-m68k.c (struct label_line): Define.

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(labels, current_label): New static variables.
	(md_assemble): Mark current_label as text, and clear it.
	(m68k_frob_label): New function.
	(m68k_flush_pending_output): New function.
	(m68k_frob_symbol): New function.
	* config/tc-m68k.h (tc_frob_label): Define.
	(md_flush_pending_output): Define.
	(tc_frob_symbol): Don't warn, just call m68k_frob_symbol.
	(tc_frob_coff_symbol): Likewise.
PR 11417.
This commit is contained in:
Ian Lance Taylor
1997-01-09 18:18:01 +00:00
parent 8ff750011b
commit d703b5a783
2 changed files with 89 additions and 0 deletions
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11
gas/ChangeLog
View File

@ -1,5 +1,16 @@
Thu Jan 9 09:08:43 1997 Ian Lance Taylor <ian@cygnus.com> Thu Jan 9 09:08:43 1997 Ian Lance Taylor <ian@cygnus.com>
* config/tc-m68k.c (struct label_line): Define.
(labels, current_label): New static variables.
(md_assemble): Mark current_label as text, and clear it.
(m68k_frob_label): New function.
(m68k_flush_pending_output): New function.
(m68k_frob_symbol): New function.
* config/tc-m68k.h (tc_frob_label): Define.
(md_flush_pending_output): Define.
(tc_frob_symbol): Don't warn, just call m68k_frob_symbol.
(tc_frob_coff_symbol): Likewise.
* read.c (read_a_source_file): When defining a macro in MRI mode, * read.c (read_a_source_file): When defining a macro in MRI mode,
don't add the symbol to the symbol table. don't add the symbol to the symbol table.

78
gas/config/tc-m68k.c
View File

@ -103,6 +103,27 @@ static int m68k_rel32_from_cmdline;
displacement. */ displacement. */
static enum m68k_size m68k_index_width_default = SIZE_LONG; static enum m68k_size m68k_index_width_default = SIZE_LONG;
/* We want to warn if any text labels are misaligned. In order to get
the right line number, we need to record the line number for each
label. */
struct label_line
{
struct label_line *next;
symbolS *label;
char *file;
unsigned int line;
int text;
};
/* The list of labels. */
static struct label_line *labels;
/* The current label. */
static struct label_line *current_label;
/* Its an arbitrary name: This means I don't approve of it */ /* Its an arbitrary name: This means I don't approve of it */
/* See flames below */ /* See flames below */
static struct obstack robyn; static struct obstack robyn;
@ -3310,6 +3331,13 @@ md_assemble (str)
return; return;
} }
/* If there is a current label, record that it marks an instruction. */
if (current_label != NULL)
{
current_label->text = 1;
current_label = NULL;
}
if (the_ins.nfrag == 0) if (the_ins.nfrag == 0)
{ {
/* No frag hacking involved; just put it out */ /* No frag hacking involved; just put it out */
@ -3729,7 +3757,57 @@ m68k_init_after_args ()
if (cpu_of_arch (current_architecture) < m68020) if (cpu_of_arch (current_architecture) < m68020)
md_relax_table[TAB (PCINDEX, BYTE)].rlx_more = 0; md_relax_table[TAB (PCINDEX, BYTE)].rlx_more = 0;
} }
/* This is called when a label is defined. */
void
m68k_frob_label (sym)
symbolS *sym;
{
struct label_line *n;
n = (struct label_line *) xmalloc (sizeof *n);
n->next = labels;
n->label = sym;
as_where (&n->file, &n->line);
labels = n;
current_label = n;
}
/* This is called when a value that is not an instruction is emitted. */
void
m68k_flush_pending_output ()
{
current_label = NULL;
}
/* This is called at the end of the assembly, when the final value of
the label is known. We warn if this is a text symbol aligned at an
odd location. */
void
m68k_frob_symbol (sym)
symbolS *sym;
{
if ((S_GET_VALUE (sym) & 1) != 0)
{
struct label_line *l;
for (l = labels; l != NULL; l = l->next)
{
if (l->label == sym)
{
if (l->text)
as_warn_where (l->file, l->line,
"text label `%s' aligned to odd boundary",
S_GET_NAME (sym));
break;
}
}
}
}
/* This is called if we go in or out of MRI mode because of the .mri /* This is called if we go in or out of MRI mode because of the .mri
pseudo-op. */ pseudo-op. */