diff options
Diffstat (limited to 'gcc/config/mips/irix6-libc-compat.c')
| -rw-r--r-- | gcc/config/mips/irix6-libc-compat.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/gcc/config/mips/irix6-libc-compat.c b/gcc/config/mips/irix6-libc-compat.c deleted file mode 100644 index 7d4140808a5..00000000000 --- a/gcc/config/mips/irix6-libc-compat.c +++ /dev/null @@ -1,84 +0,0 @@ -/* Compensate for inconsistent structure return conventions on IRIX 6. */ -/* Compile this one with gcc. */ -/* Copyright (C) 2001 Free Software Foundation, Inc. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -In addition to the permissions in the GNU General Public License, the -Free Software Foundation gives you unlimited permission to link the -compiled version of this file into combinations with other programs, -and to distribute those combinations without any restriction coming -from the use of this file. (The General Public License restrictions -do apply in other respects; for example, they cover modification of -the file, and distribution when not linked into a combine -executable.) - -GCC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - -/* GCC doesn't correctly implement the structure and union return - conventions of the N32 and N64 ABIs on IRIX 6, as described in the - MIPSpro N32 ABI Handbook, ch. 2, Calling Convention Implementations, p.7. - The ABI requires that structures (or trailing parts of structures) smaller - than 8 bytes (a 64-bit register) are left-justified, whereas GCC - right-justifies them. - - While GCC is internally consistent, calling routines compiled with a - compiler that does implement the documented ABI (like SGIs MIPSpro C - compiler) doesn't work. This is primarily an issue for system libraries - like libc. Fortunately, there exist only very few routines that return - structures by value, so until the underlying bug is fixed, it is possible - to work around it by providing wrappers for the few affected routines. - - These wrappers rely on the fact that e.g. libc contains weak versions of - those routines, and the real implementation is provided by _-prefixed - variants. So we can provide our own versions, which will only be linked - if the application uses any of the affected functions, calling the private - variants and then shifting the result as required. - - This is a rewrite of code created by Andy Polyakov. */ - -#include "config.h" -#include "system.h" -#include "coretypes.h" -#include "tm.h" - -/* This must only be used for the N32 and N64 ABIs. O32 is correct. */ - -#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64 - -/* The affected return values need to be shifted by - - BITS_PER_WORD - (sizeof (value) * BITS_PER_UNIT). - - Since only 32-bit results are involved, the shift count is always 32. */ -#define SHIFT_BITS 32 - -extern machreg_t _inet_makeaddr (machreg_t, machreg_t); - -/* <arpa/inet.h> has - - struct in_addr inet_makeaddr (int, int); (IRIX 6.2) - struct in_addr inet_makeaddr (in_addr_t, in_addr_t); (IRIX 6.5) */ - -extern machreg_t inet_makeaddr (machreg_t, machreg_t); - -machreg_t -inet_makeaddr (machreg_t net, machreg_t lna) -{ - return _inet_makeaddr (net, lna) >> SHIFT_BITS; -} - -#endif /* _ABIN32 || _ABI64 */ |