summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--gcc/ChangeLog16
-rw-r--r--gcc/c-pragma.c15
-rw-r--r--gcc/c-pragma.h4
-rw-r--r--gcc/config/sol2-c.c2
-rw-r--r--gcc/config/sol2.h3
-rw-r--r--gcc/doc/extend.texi5
-rw-r--r--gcc/doc/tm.texi18
-rw-r--r--gcc/testsuite/ChangeLog5
-rw-r--r--gcc/testsuite/gcc.dg/pragma-align-2.c14
-rw-r--r--gcc/testsuite/gcc.dg/pragma-pack-2.c48
-rw-r--r--libcpp/ChangeLog13
-rw-r--r--libcpp/directives.c48
-rw-r--r--libcpp/include/cpplib.h2
-rw-r--r--libcpp/internal.h3
14 files changed, 171 insertions, 25 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d1e06e7d822..16c3403e0de 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,19 @@
+2004-11-23 Daniel Jacobowitz <dan@codesourcery.com>
+ Joseph Myers <joseph@codesourcery.com>
+
+ * config/sol2-c.c (solaris_register_pragmas): Use
+ c_register_pragma_with_expansion.
+ * config/sol2.h (HANDLE_PRAGMA_PACK_WITH_EXPANSION): Define.
+ * c-pragma.c (c_register_pragma): Update call to
+ cpp_register_pragma.
+ (c_register_pragma_with_expansion): New function.
+ (init_pragma): Honor HANDLE_PRAGMA_PACK_WITH_EXPANSION.
+ * c-pragma.h (c_register_pragma_with_expansion): New prototype.
+ * doc/extend.texi (Solaris Pragmas): Mention macro expansion for
+ #pragma align.
+ * doc/tm.texi (c_register_pragma_with_expansion,
+ HANDLE_PRAGMA_PACK_WITH_EXPANSION): Document.
+
2004-11-23 Richard Henderson <rth@redhat.com>
* emit-rtl.c, rtl.h (subreg_hard_regno): Remove.
diff --git a/gcc/c-pragma.c b/gcc/c-pragma.c
index 24c166658b4..91efc4aa384 100644
--- a/gcc/c-pragma.c
+++ b/gcc/c-pragma.c
@@ -627,13 +627,20 @@ handle_pragma_visibility (cpp_reader *dummy ATTRIBUTE_UNUSED)
#endif
-/* Front-end wrapper for pragma registration to avoid dragging
+/* Front-end wrappers for pragma registration to avoid dragging
cpplib.h in almost everywhere. */
void
c_register_pragma (const char *space, const char *name,
void (*handler) (struct cpp_reader *))
{
- cpp_register_pragma (parse_in, space, name, handler);
+ cpp_register_pragma (parse_in, space, name, handler, 0);
+}
+
+void
+c_register_pragma_with_expansion (const char *space, const char *name,
+ void (*handler) (struct cpp_reader *))
+{
+ cpp_register_pragma (parse_in, space, name, handler, 1);
}
/* Set up front-end pragmas. */
@@ -641,8 +648,12 @@ void
init_pragma (void)
{
#ifdef HANDLE_PRAGMA_PACK
+#ifdef HANDLE_PRAGMA_PACK_WITH_EXPANSION
+ c_register_pragma_with_expansion (0, "pack", handle_pragma_pack);
+#else
c_register_pragma (0, "pack", handle_pragma_pack);
#endif
+#endif
#ifdef HANDLE_PRAGMA_WEAK
c_register_pragma (0, "weak", handle_pragma_weak);
#endif
diff --git a/gcc/c-pragma.h b/gcc/c-pragma.h
index 92741ff5cb5..669d122e695 100644
--- a/gcc/c-pragma.h
+++ b/gcc/c-pragma.h
@@ -53,10 +53,12 @@ extern struct cpp_reader* parse_in;
extern void init_pragma (void);
-/* Front-end wrapper for pragma registration to avoid dragging
+/* Front-end wrappers for pragma registration to avoid dragging
cpplib.h in almost everywhere. */
extern void c_register_pragma (const char *, const char *,
void (*) (struct cpp_reader *));
+extern void c_register_pragma_with_expansion (const char *, const char *,
+ void (*) (struct cpp_reader *));
extern void maybe_apply_pragma_weak (tree);
extern tree maybe_apply_renaming_pragma (tree, tree);
extern void add_to_renaming_pragma_list (tree, tree);
diff --git a/gcc/config/sol2-c.c b/gcc/config/sol2-c.c
index 616448413c8..784d20b2c7a 100644
--- a/gcc/config/sol2-c.c
+++ b/gcc/config/sol2-c.c
@@ -266,7 +266,7 @@ solaris_pragma_fini (cpp_reader *pfile ATTRIBUTE_UNUSED)
void
solaris_register_pragmas (void)
{
- c_register_pragma (0, "align", solaris_pragma_align);
+ c_register_pragma_with_expansion (0, "align", solaris_pragma_align);
c_register_pragma (0, "init", solaris_pragma_init);
c_register_pragma (0, "fini", solaris_pragma_fini);
}
diff --git a/gcc/config/sol2.h b/gcc/config/sol2.h
index 86d359c178b..1aa6aa84f44 100644
--- a/gcc/config/sol2.h
+++ b/gcc/config/sol2.h
@@ -245,3 +245,6 @@ __enable_execute_stack (void *addr) \
extern GTY(()) tree solaris_pending_aligns;
extern GTY(()) tree solaris_pending_inits;
extern GTY(()) tree solaris_pending_finis;
+
+/* Allow macro expansion in #pragma pack. */
+#define HANDLE_PRAGMA_PACK_WITH_EXPANSION
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index ef725b1aebe..dcb27f5642b 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -8603,7 +8603,10 @@ The Solaris target supports @code{#pragma redefine_extname}
Increase the minimum alignment of each @var{variable} to @var{alignment}.
This is the same as GCC's @code{aligned} attribute @pxref{Variable
-Attributes}).
+Attributes}). Macro expansion occurs on the arguments to this pragma
+when compiling C and Objective-C. It does not currently occur when
+compiling C++, but this is a bug which may be fixed in a future
+release.
@item fini (@var{function} [, @var{function}]...)
@cindex pragma, fini
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi
index 72d49f3a9b6..409559e5a2c 100644
--- a/gcc/doc/tm.texi
+++ b/gcc/doc/tm.texi
@@ -9029,7 +9029,8 @@ C++, which is to pretend that the file's contents are enclosed in
@defmac REGISTER_TARGET_PRAGMAS ()
Define this macro if you want to implement any target-specific pragmas.
If defined, it is a C expression which makes a series of calls to
-@code{c_register_pragma} for each pragma. The macro may also do any
+@code{c_register_pragma} or @code{c_register_pragma_with_expansion}
+for each pragma. The macro may also do any
setup required for the pragmas.
The primary reason to define this macro is to provide compatibility with
@@ -9045,8 +9046,10 @@ silently ignored, unless the user specifies @option{-Wunknown-pragmas}.
@end defmac
@deftypefun void c_register_pragma (const char *@var{space}, const char *@var{name}, void (*@var{callback}) (struct cpp_reader *))
+@deftypefunx void c_register_pragma_with_expansion (const char *@var{space}, const char *@var{name}, void (*@var{callback}) (struct cpp_reader *))
-Each call to @code{c_register_pragma} establishes one pragma. The
+Each call to @code{c_register_pragma} or
+@code{c_register_pragma_with_expansion} establishes one pragma. The
@var{callback} routine will be called when the preprocessor encounters a
pragma of the form
@@ -9060,7 +9063,10 @@ routine receives @var{pfile} as its first argument, which can be passed
on to cpplib's functions if necessary. You can lex tokens after the
@var{name} by calling @code{c_lex}. Tokens that are not read by the
callback will be silently ignored. The end of the line is indicated by
-a token of type @code{CPP_EOF}
+a token of type @code{CPP_EOF}. Macro expansion occurs on the
+arguments of pragmas registered with
+@code{c_register_pragma_with_expansion} but not on the arguments of
+pragmas registered with @code{c_register_pragma}.
For an example use of this routine, see @file{c4x.h} and the callback
routines defined in @file{c4x-c.c}.
@@ -9124,6 +9130,12 @@ that invocations of @samp{#pragma pack(pop)} will return to the previous
value.
@end defmac
+@defmac HANDLE_PRAGMA_PACK_WITH_EXPANSION
+Define this macro, as well as
+@code{HANDLE_SYSV_PRAGMA}, if macros should be expanded in the
+arguments of @samp{#pragma pack}.
+@end defmac
+
@defmac TARGET_DEFAULT_PACK_STRUCT
If your target requires a structure packing default other than 0 (meaning
the machine default), define this macro the the necessary value (in bytes).
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index b395dd02d5c..36b75e00776 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2004-11-23 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * gcc.dg/pragma-align-2.c: Test macro expansion.
+ * gcc.dg/pragma-pack-2.c: New test.
+
2004-11-23 Richard Henderson <rth@redhat.com>
* gcc.dg/vect/pr18425.c: Use effective target vect_long.
diff --git a/gcc/testsuite/gcc.dg/pragma-align-2.c b/gcc/testsuite/gcc.dg/pragma-align-2.c
index 3d5e0da3270..e33f24a27da 100644
--- a/gcc/testsuite/gcc.dg/pragma-align-2.c
+++ b/gcc/testsuite/gcc.dg/pragma-align-2.c
@@ -11,6 +11,12 @@ void abort (void);
#pragma align 64(x64)
#pragma align 128(x128)
+#define MACRO 128
+#define MACRO2(A) A
+
+#pragma align MACRO(y128)
+#pragma align MACRO2(MACRO) (z128)
+
#pragma align 8(not_defined)
#pragma align 9(odd_align) /* { dg-error "invalid alignment" } */
@@ -19,7 +25,7 @@ void abort (void);
#pragma align bad_align /* { dg-error "malformed" } */
#pragma align 1(bad_align /* { dg-error "malformed" } */
-int x, x1, x2, x4, x8, y8, z8, x16, x32, x64, x128;
+int x, x1, x2, x4, x8, y8, z8, x16, x32, x64, x128, y128, z128;
#pragma align 16(x) /* { dg-error "must appear before" } */
@@ -50,5 +56,11 @@ main ()
if (__alignof__ (x128) < 128)
abort ();
+ if (__alignof__ (y128) < 128)
+ abort ();
+
+ if (__alignof__ (z128) < 128)
+ abort ();
+
return 0;
}
diff --git a/gcc/testsuite/gcc.dg/pragma-pack-2.c b/gcc/testsuite/gcc.dg/pragma-pack-2.c
new file mode 100644
index 00000000000..f44f8dbba33
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pragma-pack-2.c
@@ -0,0 +1,48 @@
+/* On Solaris, #pragma pack should accept macro expansion. */
+
+/* { dg-do run { target *-*-solaris2.* } } */
+
+extern void abort (void);
+
+struct {
+ char one;
+ long two;
+} defaultalign;
+
+#define ALIGNHIGH 16
+
+#pragma pack(ALIGNHIGH)
+struct {
+ char one;
+ long two;
+} sixteen;
+
+#define ALIGN1(X) 1
+#pragma pack(ALIGN1(4))
+struct {
+ char one;
+ long two;
+} two;
+
+#define ALIGN2(X) X
+#pragma pack(ALIGN2(2))
+struct {
+ char one;
+ long two;
+} three;
+
+#define EMPTY
+#pragma pack(EMPTY)
+struct {
+ char one;
+ long two;
+} resetalign;
+
+main()
+{
+ if(sizeof(sixteen) < sizeof(defaultalign)) abort();
+ if(sizeof(two) >= sizeof(defaultalign)) abort();
+ if(sizeof(three) <= sizeof(two)) abort();
+ if(sizeof(resetalign) != sizeof(defaultalign)) abort();
+ return 0;
+}
diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index eb5d76f7b33..3e8567bf05e 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,16 @@
+2004-11-23 Daniel Jacobowitz <dan@codesourcery.com>
+ Joseph Myers <joseph@codesourcery.com>
+
+ * internal.h (struct lexer_state): Add in_deferred_pragma.
+ * directives.c (struct pragma_entry): Add allow_expansion.
+ (insert_pragma_entry): Take allow_expansion flag.
+ (register_pragma): Likewise.
+ (cpp_register_pragma): Likewise.
+ (_cpp_init_internal_pragmas): Update calls to cpp_register_pragma.
+ (do_pragma): Honor allow_expansion.
+ (cpp_handle_deferred_pragma): Set in_deferred_pragma.
+ * include/cpplib.h (cpp_register_pragma): Update prototype.
+
2004-11-18 Daniel Jacobowitz <dan@codesourcery.com>
Mark Mitchell <mark@codesourcery.com>
diff --git a/libcpp/directives.c b/libcpp/directives.c
index 10d080bee44..a835b6812a5 100644
--- a/libcpp/directives.c
+++ b/libcpp/directives.c
@@ -45,6 +45,7 @@ struct pragma_entry
struct pragma_entry *next;
const cpp_hashnode *pragma; /* Name and length. */
bool is_nspace;
+ bool allow_expansion;
bool is_internal;
union {
pragma_cb handler;
@@ -108,9 +109,9 @@ static struct pragma_entry *insert_pragma_entry (cpp_reader *,
struct pragma_entry **,
const cpp_hashnode *,
pragma_cb,
- bool);
+ bool, bool);
static void register_pragma (cpp_reader *, const char *, const char *,
- pragma_cb, bool);
+ pragma_cb, bool, bool);
static int count_registered_pragmas (struct pragma_entry *);
static char ** save_registered_pragmas (struct pragma_entry *, char **);
static char ** restore_registered_pragmas (cpp_reader *, struct pragma_entry *,
@@ -964,7 +965,7 @@ lookup_pragma_entry (struct pragma_entry *chain, const cpp_hashnode *pragma)
static struct pragma_entry *
insert_pragma_entry (cpp_reader *pfile, struct pragma_entry **chain,
const cpp_hashnode *pragma, pragma_cb handler,
- bool internal)
+ bool allow_expansion, bool internal)
{
struct pragma_entry *new;
@@ -982,6 +983,7 @@ insert_pragma_entry (cpp_reader *pfile, struct pragma_entry **chain,
new->u.space = NULL;
}
+ new->allow_expansion = allow_expansion;
new->is_internal = internal;
new->next = *chain;
*chain = new;
@@ -990,12 +992,13 @@ insert_pragma_entry (cpp_reader *pfile, struct pragma_entry **chain,
/* Register a pragma NAME in namespace SPACE. If SPACE is null, it
goes in the global namespace. HANDLER is the handler it will call,
- which must be non-NULL. INTERNAL is true if this is a pragma
- registered by cpplib itself, false if it is registered via
+ which must be non-NULL. If ALLOW_EXPANSION is set, allow macro
+ expansion while parsing pragma NAME. INTERNAL is true if this is a
+ pragma registered by cpplib itself, false if it is registered via
cpp_register_pragma */
static void
register_pragma (cpp_reader *pfile, const char *space, const char *name,
- pragma_cb handler, bool internal)
+ pragma_cb handler, bool allow_expansion, bool internal)
{
struct pragma_entry **chain = &pfile->pragmas;
struct pragma_entry *entry;
@@ -1009,7 +1012,8 @@ register_pragma (cpp_reader *pfile, const char *space, const char *name,
node = cpp_lookup (pfile, U space, strlen (space));
entry = lookup_pragma_entry (*chain, node);
if (!entry)
- entry = insert_pragma_entry (pfile, chain, node, NULL, internal);
+ entry = insert_pragma_entry (pfile, chain, node, NULL,
+ allow_expansion, internal);
else if (!entry->is_nspace)
goto clash;
chain = &entry->u.space;
@@ -1032,17 +1036,20 @@ register_pragma (cpp_reader *pfile, const char *space, const char *name,
cpp_error (pfile, CPP_DL_ICE, "#pragma %s is already registered", name);
}
else
- insert_pragma_entry (pfile, chain, node, handler, internal);
+ insert_pragma_entry (pfile, chain, node, handler, allow_expansion,
+ internal);
}
/* Register a pragma NAME in namespace SPACE. If SPACE is null, it
goes in the global namespace. HANDLER is the handler it will call,
- which must be non-NULL. This function is exported from libcpp. */
+ which must be non-NULL. If ALLOW_EXPANSION is set, allow macro
+ expansion while parsing pragma NAME. This function is exported
+ from libcpp. */
void
cpp_register_pragma (cpp_reader *pfile, const char *space, const char *name,
- pragma_cb handler)
+ pragma_cb handler, bool allow_expansion)
{
- register_pragma (pfile, space, name, handler, false);
+ register_pragma (pfile, space, name, handler, allow_expansion, false);
}
/* Register the pragmas the preprocessor itself handles. */
@@ -1050,12 +1057,14 @@ void
_cpp_init_internal_pragmas (cpp_reader *pfile)
{
/* Pragmas in the global namespace. */
- register_pragma (pfile, 0, "once", do_pragma_once, true);
+ register_pragma (pfile, 0, "once", do_pragma_once, false, true);
/* New GCC-specific pragmas should be put in the GCC namespace. */
- register_pragma (pfile, "GCC", "poison", do_pragma_poison, true);
- register_pragma (pfile, "GCC", "system_header", do_pragma_system_header, true);
- register_pragma (pfile, "GCC", "dependency", do_pragma_dependency, true);
+ register_pragma (pfile, "GCC", "poison", do_pragma_poison, false, true);
+ register_pragma (pfile, "GCC", "system_header", do_pragma_system_header,
+ false, true);
+ register_pragma (pfile, "GCC", "dependency", do_pragma_dependency,
+ false, true);
}
/* Return the number of registered pragmas in PE. */
@@ -1176,7 +1185,14 @@ do_pragma (cpp_reader *pfile)
numbers in place. */
if (pfile->cb.line_change)
(*pfile->cb.line_change) (pfile, pragma_token, false);
+ /* Never expand macros if handling a deferred pragma, since
+ the macro definitions now applicable may be different
+ from those at the point the pragma appeared. */
+ if (p->allow_expansion && !pfile->state.in_deferred_pragma)
+ pfile->state.prevent_expansion--;
(*p->u.handler) (pfile);
+ if (p->allow_expansion && !pfile->state.in_deferred_pragma)
+ pfile->state.prevent_expansion++;
}
else
{
@@ -1430,6 +1446,7 @@ cpp_handle_deferred_pragma (cpp_reader *pfile, const cpp_string *s)
pfile->context->macro = 0;
pfile->context->prev = 0;
pfile->cb.line_change = NULL;
+ pfile->state.in_deferred_pragma = true;
CPP_OPTION (pfile, defer_pragmas) = false;
run_directive (pfile, T_PRAGMA, (const char *)s->text, s->len);
@@ -1439,6 +1456,7 @@ cpp_handle_deferred_pragma (cpp_reader *pfile, const cpp_string *s)
pfile->cur_token = saved_cur_token;
pfile->cur_run = saved_cur_run;
pfile->cb.line_change = saved_line_change;
+ pfile->state.in_deferred_pragma = false;
CPP_OPTION (pfile, defer_pragmas) = saved_defer_pragmas;
}
diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h
index 4ee626ecd1c..13213882aa8 100644
--- a/libcpp/include/cpplib.h
+++ b/libcpp/include/cpplib.h
@@ -638,7 +638,7 @@ extern unsigned char *cpp_token_as_text (cpp_reader *, const cpp_token *);
extern unsigned char *cpp_spell_token (cpp_reader *, const cpp_token *,
unsigned char *);
extern void cpp_register_pragma (cpp_reader *, const char *, const char *,
- void (*) (cpp_reader *));
+ void (*) (cpp_reader *), bool);
extern void cpp_handle_deferred_pragma (cpp_reader *, const cpp_string *);
extern int cpp_avoid_paste (cpp_reader *, const cpp_token *,
const cpp_token *);
diff --git a/libcpp/internal.h b/libcpp/internal.h
index 15a3dfada9e..70694fd039d 100644
--- a/libcpp/internal.h
+++ b/libcpp/internal.h
@@ -205,6 +205,9 @@ struct lexer_state
/* Nonzero to prevent macro expansion. */
unsigned char prevent_expansion;
+ /* Nonzero when handling a deferred pragma. */
+ unsigned char in_deferred_pragma;
+
/* Nonzero when parsing arguments to a function-like macro. */
unsigned char parsing_args;
View Lorry Controller Status