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vms-c.c (vms_pragma_nomember_alignment): Handle octaword. 

2012-03-06  Tristan Gingold  <gingold@adacore.com>

	* config/vms/vms-c.c (vms_pragma_nomember_alignment): Handle
	octaword.
	(external_model_kind): Improve documentation.
	(vms_pragma_extern_model): Handle relaxed_redef.
	(vms_c_register_pragma): Allow expansion for nomember_alignment.

From-SVN: r184986
This commit is contained in:
Tristan Gingold 2012-03-06 10:46:32 +00:00 committed by Tristan Gingold
parent 837fd3b063
commit 66df6e9ef3
2 changed files with 36 additions and 8 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2012-03-06 Tristan Gingold <gingold@adacore.com>
* config/vms/vms-c.c (vms_pragma_nomember_alignment): Handle
octaword.
(external_model_kind): Improve documentation.
(vms_pragma_extern_model): Handle relaxed_redef.
(vms_c_register_pragma): Allow expansion for nomember_alignment.
2012-03-06 Georg-Johann Lay <avr@gjlay.de>
* doc/invoke.texi (AVR Options): -mmcu=: Document the XMEGA cores.

36
gcc/config/vms/vms-c.c
View File

@ -125,6 +125,8 @@ vms_pragma_nomember_alignment (cpp_reader *pfile ATTRIBUTE_UNUSED)
maximum_field_alignment = 4 * BITS_PER_UNIT;
else if (strcmp (arg, "quadword") == 0)
maximum_field_alignment = 8 * BITS_PER_UNIT;
else if (strcmp (arg, "octaword") == 0)
maximum_field_alignment = 16 * BITS_PER_UNIT;
else
{
error ("unhandled alignment for '#pragma nomember_alignment'");
@ -145,17 +147,33 @@ vms_pragma_nomember_alignment (cpp_reader *pfile ATTRIBUTE_UNUSED)
}
}
/* The 'extern model' for public data. */
/* The 'extern model' for public data. This drives how the following
declarations are handled:
1) extern int name;
2) int name;
3) int name = 5;
See below for the behaviour as implemented by the native compiler.
*/
enum extern_model_kind
{
/* Create one overlaid section per variable. */
/* Create one overlaid section per variable. All the above declarations (1,
2 and 3) are handled the same way: they create an overlaid section named
NAME (and initialized only for 3). No global symbol is created.
This is the VAX C behavior. */
extern_model_common_block,
/* Like unix: multiple not-initialized declarations are allowed. */
/* Like unix: multiple not-initialized declarations are allowed.
Only one initialized definition (case 3) is allows, but multiple
uninitialize definition (case 2) are allowed.
For case 2, this creates both a section named NAME and a global symbol.
For case 3, this creates a conditional global symbol defenition and a
conditional section definition.
This is the traditional UNIX C behavior. */
extern_model_relaxed_refdef,
/* Like -fno-common. */
/* Like -fno-common. Only one definition (cases 2 and 3) are allowed.
This is the ANSI-C model. */
extern_model_strict_refdef,
/* Declarations creates symbols without storage. */
@ -192,6 +210,8 @@ vms_pragma_extern_model (cpp_reader *pfile ATTRIBUTE_UNUSED)
saved_extern_model = current_extern_model;
else if (strcmp (arg, "restore") == 0)
current_extern_model = saved_extern_model;
else if (strcmp (arg, "relaxed_refdef") == 0)
current_extern_model = extern_model_relaxed_refdef;
else if (strcmp (arg, "strict_refdef") == 0)
current_extern_model = extern_model_strict_refdef;
else if (strcmp (arg, "common_block") == 0)
@ -274,10 +294,10 @@ vms_c_register_pragma (void)
c_register_pragma (NULL, "standard", vms_pragma_standard);
c_register_pragma (NULL, "__member_alignment", vms_pragma_member_alignment);
c_register_pragma (NULL, "member_alignment", vms_pragma_member_alignment);
c_register_pragma (NULL, "__nomember_alignment",
vms_pragma_nomember_alignment);
c_register_pragma (NULL, "nomember_alignment",
vms_pragma_nomember_alignment);
c_register_pragma_with_expansion (NULL, "__nomember_alignment",
vms_pragma_nomember_alignment);
c_register_pragma_with_expansion (NULL, "nomember_alignment",
vms_pragma_nomember_alignment);
c_register_pragma (NULL, "__extern_model", vms_pragma_extern_model);
c_register_pragma (NULL, "extern_model", vms_pragma_extern_model);
c_register_pragma (NULL, "__message", vms_pragma_message);