/* Definitions for SOM assembler support.
- Copyright (C) 1999, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GNU CC.
Boston, MA 02111-1307, USA. */
/* So we can conditionalize small amounts of code in pa.c or pa.md. */
-#define OBJ_SOM
+#undef TARGET_SOM
+#define TARGET_SOM 1
/* We do not use BINCL stabs in SOM.
??? If it does not hurt, we probably should to avoid useless divergence
that the section name will have a "." prefix. */
#define ASM_OUTPUT_FUNCTION_PREFIX(FILE, NAME) \
{ \
- const char *name; \
- STRIP_NAME_ENCODING (name, NAME); \
+ const char *name = (*targetm.strip_name_encoding) (NAME); \
if (TARGET_GAS && in_section == in_text) \
fputs ("\t.NSUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY\n", FILE); \
else if (TARGET_GAS) \
} \
} \
/* anonymous args */ \
- if ((TYPE_ARG_TYPES (tree_type) != 0 \
- && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (tree_type)))\
- != void_type_node)) \
- || current_function_varargs) \
+ if (TYPE_ARG_TYPES (tree_type) != 0 \
+ && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (tree_type)))\
+ != void_type_node)) \
{ \
for (; i < 4; i++) \
fprintf (FILE, ",ARGW%d=GR", i); \
/* Supposedly the assembler rejects the command if there is no tab! */
#define READONLY_DATA_ASM_OP "\t.SPACE $TEXT$\n\t.SUBSPA $LIT$\n"
-#define READONLY_DATA_SECTION readonly_data
+#define EXTRA_SECTIONS in_readonly_data
+
+#define EXTRA_SECTION_FUNCTIONS \
+extern void readonly_data PARAMS ((void)); \
+void \
+readonly_data () \
+{ \
+ if (in_section != in_readonly_data) \
+ { \
+ in_section = in_readonly_data; \
+ fprintf (asm_out_file, "%s\n", READONLY_DATA_ASM_OP); \
+ } \
+}
+
+/* FIXME: HPUX ld generates incorrect GOT entries for "T" fixups
+ which reference data within the $TEXT$ space (for example constant
+ strings in the $LIT$ subspace).
+
+ The assemblers (GAS and HP as) both have problems with handling
+ the difference of two symbols which is the other correct way to
+ reference constant data during PIC code generation.
+
+ So, there's no way to reference constant data which is in the
+ $TEXT$ space during PIC generation. Instead place all constant
+ data into the $PRIVATE$ subspace (this reduces sharing, but it
+ works correctly). */
+
+#define READONLY_DATA_SECTION (flag_pic ? data_section : readonly_data)
/* Output before writable data. */
So, we force exception information into the data section. */
#define TARGET_ASM_EXCEPTION_SECTION data_section
-/* Define the .bss section for ASM_OUTPUT_LOCAL to use. */
-
-#define EXTRA_SECTIONS in_readonly_data
-
-/* FIXME: HPUX ld generates incorrect GOT entries for "T" fixups
- which reference data within the $TEXT$ space (for example constant
- strings in the $LIT$ subspace).
-
- The assemblers (GAS and HP as) both have problems with handling
- the difference of two symbols which is the other correct way to
- reference constant data during PIC code generation.
-
- So, there's no way to reference constant data which is in the
- $TEXT$ space during PIC generation. Instead place all constant
- data into the $PRIVATE$ subspace (this reduces sharing, but it
- works correctly). */
-
-#define EXTRA_SECTION_FUNCTIONS \
-extern void readonly_data PARAMS ((void)); \
-void \
-readonly_data () \
-{ \
- if (in_section != in_readonly_data) \
- { \
- if (flag_pic) \
- fprintf (asm_out_file, "%s\n", DATA_SECTION_ASM_OP); \
- else \
- fprintf (asm_out_file, "%s\n", READONLY_DATA_ASM_OP); \
- in_section = in_readonly_data; \
- } \
-}
-
/* This is how to output a command to make the user-level label named NAME
defined for reference from other files.
"imported", even library calls. They look a bit different, so
here's this macro.
- Also note not all libcall names are passed to ENCODE_SECTION_INFO
+ Also note not all libcall names are passed to pa_encode_section_info
(__main for example). To make sure all libcall names have section
info recorded in them, we do it here. We must also ensure that
we don't import a libcall that has been previously exported since
if (!function_label_operand (RTL, VOIDmode)) \
hppa_encode_label (RTL); \
\
- STRIP_NAME_ENCODING (name, XSTR ((RTL), 0)); \
+ name = (*targetm.strip_name_encoding) (XSTR ((RTL), 0)); \
id = maybe_get_identifier (name); \
if (! id || ! TREE_SYMBOL_REFERENCED (id)) \
{ \
} \
} while (0)
-#define ASM_FILE_END(FILE) output_deferred_plabels (FILE)
+/* We want __gcc_plt_call to appear in every program built by
+ gcc, so we make a reference to it out of __main.
+ We use the asm statement to fool the optimizer into not
+ removing the dead (but important) initialization of
+ REFERENCE. */
+
+#define DO_GLOBAL_DTORS_BODY \
+do { \
+ extern void __gcc_plt_call (); \
+ void (*reference)() = &__gcc_plt_call; \
+ func_ptr *p; \
+ __asm__ ("" : : "r" (reference)); \
+ for (p = __DTOR_LIST__ + 1; *p; ) \
+ (*p++) (); \
+} while (0)
/* The .align directive in the HP assembler allows up to a 32 alignment. */
#define MAX_OFILE_ALIGNMENT 32768
-/* SOM does not support the init_priority C++ attribute. */
-#undef SUPPORTS_INIT_PRIORITY
-#define SUPPORTS_INIT_PRIORITY 0
+/* The SOM linker hardcodes paths into binaries. As a result, dotdots
+ must be removed from library prefixes to prevent binaries from depending
+ on the location of the GCC tool directory. The downside is GCC
+ cannot be moved after installation using a symlink. */
+#define ALWAYS_STRIP_DOTDOT 1
+
+/* Aggregates with a single float or double field should be passed and
+ returned in the general registers. */
+#define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) (MODE==SFmode || MODE==DFmode)
+
+/* If GAS supports weak, we can support weak when we have working linker
+ support for secondary definitions and are generating code for GAS. */
+#ifdef HAVE_GAS_WEAK
+#define SUPPORTS_WEAK (TARGET_SOM_SDEF && TARGET_GAS)
+#else
+#define SUPPORTS_WEAK 0
+#endif
+
+/* We can support one only if we support weak. */
+#define SUPPORTS_ONE_ONLY SUPPORTS_WEAK
+
+/* Use weak (secondary definitions) to make one only declarations. */
+#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
+
+/* This is how we tell the assembler that a symbol is weak. The SOM
+ weak implementation uses the secondary definition (sdef) flag.
+
+ The behavior of sdef symbols is similar to ELF weak symbols in that
+ multiple definitions can occur without incurring a link error.
+ However, they differ in the following ways:
+ 1) Undefined sdef symbols are not allowed.
+ 2) The linker searches for undefined sdef symbols and will load an
+ archive library member to resolve an undefined sdef symbol.
+ 3) The exported symbol from a shared library is a primary symbol
+ rather than a sdef symbol. Thus, more care is needed in the
+ ordering of libraries.
+
+ It appears that the linker discards extra copies of "weak" functions
+ when linking shared libraries, independent of whether or not they
+ are in their own section. In linking final executables, -Wl,-O can
+ be used to remove dead procedures. Thus, support for named sections
+ is not needed and in previous testing caused problems with various
+ HP tools. */
+#define ASM_WEAKEN_LABEL(FILE,NAME) \
+ do { fputs ("\t.weak\t", FILE); \
+ assemble_name (FILE, NAME); \
+ fputc ('\n', FILE); \
+ if (! FUNCTION_NAME_P (NAME)) \
+ { \
+ fputs ("\t.EXPORT ", FILE); \
+ assemble_name (FILE, NAME); \
+ fputs (",DATA\n", FILE); \
+ } \
+ } while (0)
+
+/* We can't handle weak aliases, and therefore can't support pragma weak.
+ Suppress the use of pragma weak in gthr-dce.h and gthr-posix.h. */
+#define GTHREAD_USE_WEAK 0
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