From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/config/host-solaris.c | 125 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 125 insertions(+) create mode 100644 gcc/config/host-solaris.c (limited to 'gcc/config/host-solaris.c') diff --git a/gcc/config/host-solaris.c b/gcc/config/host-solaris.c new file mode 100644 index 000000000..12eab3c61 --- /dev/null +++ b/gcc/config/host-solaris.c @@ -0,0 +1,125 @@ +/* Solaris host-specific hook definitions. + Copyright (C) 2004, 2007, 2008, 2010 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 3, or (at your + option) any later version. + + 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 COPYING3. If not see + . */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "hosthooks.h" +#include "hosthooks-def.h" + + +#undef HOST_HOOKS_GT_PCH_GET_ADDRESS +#define HOST_HOOKS_GT_PCH_GET_ADDRESS sol_gt_pch_get_address +#undef HOST_HOOKS_GT_PCH_USE_ADDRESS +#define HOST_HOOKS_GT_PCH_USE_ADDRESS sol_gt_pch_use_address + +/* Before Solaris 11, the mmap ADDR parameter is mostly ignored without + MAP_FIXED set. Before we give up, search the desired address space with + mincore to see if the space is really free. */ + +static void * +mmap_fixed (void *addr, size_t len, int prot, int flags, int fd, off_t off) +{ + void *base; + + base = mmap ((caddr_t) addr, len, prot, flags, fd, off); + + if (base != addr) + { + size_t page_size = getpagesize(); + char one_byte; + size_t i; + + if (base != (void *) MAP_FAILED) + munmap ((caddr_t) base, len); + + errno = 0; + for (i = 0; i < len; i += page_size) + if (mincore ((char *)addr + i, page_size, (char *) &one_byte) == -1 + && errno == ENOMEM) + continue; /* The page is not mapped. */ + else + break; + + if (i >= len) + base = mmap ((caddr_t) addr, len, prot, flags | MAP_FIXED, fd, off); + } + + return base; +} + +/* For various ports, try to guess a fixed spot in the vm space + that's probably free. Based on McDougall, Mauro, Solaris Internals, 2nd + ed., p.460-461, fig. 9-3, 9-4, 9-5. */ +#if defined(__sparcv9__) +/* This low to avoid VA hole on UltraSPARC I/II. */ +# define TRY_EMPTY_VM_SPACE 0x70000000000 +#elif defined(__sparc__) +# define TRY_EMPTY_VM_SPACE 0x80000000 +#elif defined(__x86_64__) +# define TRY_EMPTY_VM_SPACE 0x8000000000000000 +#elif defined(__i386__) +# define TRY_EMPTY_VM_SPACE 0xB0000000 +#else +# define TRY_EMPTY_VM_SPACE 0 +#endif + +/* Determine a location where we might be able to reliably allocate + SIZE bytes. FD is the PCH file, though we should return with the + file unmapped. */ + +static void * +sol_gt_pch_get_address (size_t size, int fd) +{ + void *addr; + + addr = mmap_fixed ((caddr_t) TRY_EMPTY_VM_SPACE, size, + PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); + + /* If we failed the map, that means there's *no* free space. */ + if (addr == (void *) MAP_FAILED) + return NULL; + /* Unmap the area before returning. */ + munmap ((caddr_t) addr, size); + + return addr; +} + +/* Map SIZE bytes of FD+OFFSET at BASE. Return 1 if we succeeded at + mapping the data at BASE, -1 if we couldn't. */ + +static int +sol_gt_pch_use_address (void *base, size_t size, int fd, size_t offset) +{ + void *addr; + + /* We're called with size == 0 if we're not planning to load a PCH + file at all. This allows the hook to free any static space that + we might have allocated at link time. */ + if (size == 0) + return -1; + + addr = mmap_fixed ((caddr_t) base, size, + PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, offset); + + return addr == base ? 1 : -1; +} + + +const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER; -- cgit v1.2.3