+++ /dev/null
-/* Compensate for inconsistent structure passing conventions on IRIX 6. */
-/* Compile this one with gcc. */
-/* Copyright (C) 2001 Free Software Foundation, Inc.
-
-This file is part of GNU CC.
-
-GNU CC 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.)
-
-GNU CC 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 GNU CC; 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 passing and 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 take
- structure value arguments or return structures by value, so until the
- underlying bug is fixed, it is possible to work around it by providing
- wrapper functions for the few affected routines that compensate for the
- inconsistent alignment.
-
- 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 after shifting the arguments or results as required.
-
- This is a rewrite of code created by Andy Polyakov. */
-
-#include "config.h"
-#include "system.h"
-
-/* This must only be used for the N32 and N64 ABIs. O32 is correct. */
-
-#if _MIPS_SIM == _ABIN32 || _MIPS_SIM == _ABI64
-
-/* The affected arguments need to be shifted by
-
- BITS_PER_WORD - (sizeof (arg) * BITS_PER_UNIT).
-
- Since only 32-bit args and results are involved, the shift count is
- always 32. */
-#define SHIFT_BITS 32
-
-extern machreg_t inet_ntoa PARAMS ((machreg_t));
-extern machreg_t inet_lnaof PARAMS ((machreg_t));
-extern machreg_t inet_netof PARAMS ((machreg_t));
-extern machreg_t inet_makeaddr PARAMS ((machreg_t, machreg_t));
-
-extern machreg_t _inet_ntoa PARAMS ((machreg_t));
-extern machreg_t _inet_lnaof PARAMS ((machreg_t));
-extern machreg_t _inet_netof PARAMS ((machreg_t));
-extern machreg_t _inet_makeaddr PARAMS ((machreg_t, machreg_t));
-
-/* <arpa/inet.h> has
-
- char *inet_ntoa (struct in_addr);
-
- on both IRIX 6.2 and 6.5, with struct in_addr containing a 32-bit int. */
-
-machreg_t
-inet_ntoa (machreg_t in)
-{
- return _inet_ntoa (in << SHIFT_BITS);
-}
-
-/* <arpa/inet.h> has
-
- unsigned long inet_lnaof (struct in_addr); (IRIX 6.2)
- in_addr_t inet_lnaof (struct in_addr); (IRIX 6.5)
-
- in_addr_t is a 32-bit int. */
-
-machreg_t
-inet_lnaof (machreg_t in)
-{
- return _inet_lnaof (in << SHIFT_BITS);
-}
-
-/* <arpa/inet.h> has
-
- unsigned long inet_netof (struct in_addr); (IRIX 6.2)
- in_addr_t inet_netof (struct in_addr); (IRIX 6.5) */
-
-machreg_t
-inet_netof (machreg_t in)
-{
- return _inet_netof (in << SHIFT_BITS);
-}
-
-/* <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) */
-
-machreg_t
-inet_makeaddr (machreg_t net, machreg_t lna)
-{
- return _inet_makeaddr (net, lna) >> SHIFT_BITS;
-}
-
-#if _MIPS_SIM == _ABIN32
-extern machreg_t semctl PARAMS ((machreg_t, machreg_t, machreg_t, machreg_t));
-extern machreg_t _semctl PARAMS ((machreg_t, machreg_t, machreg_t, machreg_t));
-
-/* <sys/sem.h> has
-
- int semctl (int, int, int, ...);
-
- where the variadic argument is union semun if used. union semun contains
- an int and two pointers, so the union is already 64 bits wide under the
- N64 ABI and alignment is not an issue. */
-
-machreg_t
-semctl (machreg_t semid, machreg_t semnum, machreg_t cmd, machreg_t arg)
-{
- return _semctl(semid, semnum, cmd, arg << SHIFT_BITS);
-}
-#endif /* _ABIN32 */
-
-#endif /* _ABIN32 || _ABI64 */
projects / msp430-gcc.git / blobdiff