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som.h (SUPPORTS_WEAK, [...]): Define.

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* som.h (SUPPORTS_WEAK, SUPPORTS_ONE_ONLY, MAKE_DECL_ONE_ONLY,
	ASM_WEAKEN_LABEL, GTHREAD_USE_WEAK): Define.
	* pa.h (TARGET_SOM_SDEF): Define.
	* pa-hpux11.h (TARGET_SOM_SDEF): Define.
	* config/os/hpux/os_defines.h (_GLIBCPP_GTHREAD_USE_WEAK): Define for
	__hppa__.

From-SVN: r61372
This commit is contained in:
John David Anglin 2003-01-16 00:34:45 +00:00 committed by John David Anglin
parent f826d5952c
commit 4af6a06372
6 changed files with 79 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2003-01-15 John David Anglin <dave@hiauly1.hia.nrc.ca>
* som.h (SUPPORTS_WEAK, SUPPORTS_ONE_ONLY, MAKE_DECL_ONE_ONLY,
ASM_WEAKEN_LABEL, GTHREAD_USE_WEAK): Define.
* pa.h (TARGET_SOM_SDEF): Define.
* pa-hpux11.h (TARGET_SOM_SDEF): Define.
2003-01-16 Stephane Carrez <stcarrez@nerim.fr>
* config/m68hc11/m68hc11.c (expand_prologue): Use push/pop to

7
gcc/config/pa/pa-hpux11.h
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@ -1,5 +1,5 @@
/* Definitions of target machine for GNU compiler, for HP PA-RISC
Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
Copyright (C) 1998, 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
This file is part of GNU CC.
@ -130,3 +130,8 @@ Boston, MA 02111-1307, USA. */
#define LD_INIT_SWITCH "+init"
#undef LD_FINI_SWITCH
#define LD_FINI_SWITCH "+fini"
/* The HP-UX 11.X SOM linker (ld32) can successfully link shared libraries
with secondary definition (weak) symbols. */
#undef TARGET_SOM_SDEF
#define TARGET_SOM_SDEF 1

7
gcc/config/pa/pa.h
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@ -1,6 +1,6 @@
/* Definitions of target machine for GNU compiler, for the HP Spectrum.
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
2001, 2002 Free Software Foundation, Inc.
2001, 2002, 2003 Free Software Foundation, Inc.
Contributed by Michael Tiemann (tiemann@cygnus.com) of Cygnus Support
and Tim Moore (moore@defmacro.cs.utah.edu) of the Center for
Software Science at the University of Utah.
@ -206,6 +206,11 @@ extern int target_flags;
not for external calls. */
#define TARGET_LONG_PIC_PCREL_CALL 0
/* Define to a C expression evaluating to true to use SOM secondary
definition symbols for weak support. Linker support for secondary
definition symbols is buggy prior to HP-UX 11.X. */
#define TARGET_SOM_SDEF 0
/* Macro to define tables used to set the flags. This is a
list in braces of target switches with each switch being
{ "NAME", VALUE, "HELP_STRING" }. VALUE is the bits to set,

51
gcc/config/pa/som.h
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@ -1,5 +1,5 @@
/* 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.
@ -371,3 +371,52 @@ do { \
/* 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

5
libstdc++-v3/ChangeLog
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@ -1,3 +1,8 @@
2003-01-15 John David Anglin <dave@hiauly1.hia.nrc.ca>
* config/os/hpux/os_defines.h (_GLIBCPP_GTHREAD_USE_WEAK): Define for
__hppa__.
2003-01-14 Jeffrey D. Oldham <oldham@codesourcery.com>
Further conform g++'s __vmi_class_type_info to the C++ ABI

5
libstdc++-v3/config/os/hpux/os_defines.h
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@ -89,4 +89,9 @@ typedef long int __padding_type;
#if !defined(_GLIBCPP_SUPPORTS_WEAK) && defined (__hppa__)
#define _GLIBCPP_INST_ATOMICITY_LOCK 1
#endif
/* Don't use pragma weak in gthread headers. */
#ifdef __hppa__
#define _GLIBCPP_GTHREAD_USE_WEAK 0
#endif
#endif