| host-darwin.c (132718) | host-darwin.c (161651) |
|---|---|
| 1/* Darwin/powerpc host-specific hook definitions. | 1/* Darwin/powerpc host-specific hook definitions. |
| 2 Copyright (C) 2003 Free Software Foundation, Inc. | 2 Copyright (C) 2003, 2004 Free Software Foundation, Inc. |
| 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it 7 under the terms of the GNU General Public License as published 8 by the Free Software Foundation; either version 2, or (at your 9 option) any later version. 10 --- 121 unchanged lines hidden (view full) --- 132 133 sigemptyset(&sact.sa_mask); 134 sact.sa_flags = SA_ONSTACK | SA_SIGINFO; 135 sact.sa_sigaction = segv_handler; 136 if (sigaction (SIGSEGV, &sact, 0) < 0) 137 fatal_error ("While setting up signal handler: %m"); 138} 139 | 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it 7 under the terms of the GNU General Public License as published 8 by the Free Software Foundation; either version 2, or (at your 9 option) any later version. 10 --- 121 unchanged lines hidden (view full) --- 132 133 sigemptyset(&sact.sa_mask); 134 sact.sa_flags = SA_ONSTACK | SA_SIGINFO; 135 sact.sa_sigaction = segv_handler; 136 if (sigaction (SIGSEGV, &sact, 0) < 0) 137 fatal_error ("While setting up signal handler: %m"); 138} 139 |
| 140static void * darwin_rs6000_gt_pch_get_address (size_t); 141static bool darwin_rs6000_gt_pch_use_address (void *, size_t); 142 | |
| 143#undef HOST_HOOKS_GT_PCH_GET_ADDRESS 144#define HOST_HOOKS_GT_PCH_GET_ADDRESS darwin_rs6000_gt_pch_get_address 145#undef HOST_HOOKS_GT_PCH_USE_ADDRESS 146#define HOST_HOOKS_GT_PCH_USE_ADDRESS darwin_rs6000_gt_pch_use_address 147 | 140#undef HOST_HOOKS_GT_PCH_GET_ADDRESS 141#define HOST_HOOKS_GT_PCH_GET_ADDRESS darwin_rs6000_gt_pch_get_address 142#undef HOST_HOOKS_GT_PCH_USE_ADDRESS 143#define HOST_HOOKS_GT_PCH_USE_ADDRESS darwin_rs6000_gt_pch_use_address 144 |
| 148 | |
| 149/* Yes, this is really supposed to work. */ 150static char pch_address_space[1024*1024*1024] __attribute__((aligned (4096))); 151 152/* Return the address of the PCH address space, if the PCH will fit in it. */ 153 154static void * | 145/* Yes, this is really supposed to work. */ 146static char pch_address_space[1024*1024*1024] __attribute__((aligned (4096))); 147 148/* Return the address of the PCH address space, if the PCH will fit in it. */ 149 150static void * |
| 155darwin_rs6000_gt_pch_get_address (size_t sz) | 151darwin_rs6000_gt_pch_get_address (size_t sz, int fd ATTRIBUTE_UNUSED) |
| 156{ 157 if (sz <= sizeof (pch_address_space)) 158 return pch_address_space; 159 else 160 return NULL; 161} 162 163/* Check ADDR and SZ for validity, and deallocate (using munmap) that part of 164 pch_address_space beyond SZ. */ 165 | 152{ 153 if (sz <= sizeof (pch_address_space)) 154 return pch_address_space; 155 else 156 return NULL; 157} 158 159/* Check ADDR and SZ for validity, and deallocate (using munmap) that part of 160 pch_address_space beyond SZ. */ 161 |
| 166static bool 167darwin_rs6000_gt_pch_use_address (void *addr, size_t sz) | 162static int 163darwin_rs6000_gt_pch_use_address (void *addr, size_t sz, int fd, size_t off) |
| 168{ 169 const size_t pagesize = getpagesize(); | 164{ 165 const size_t pagesize = getpagesize(); |
| 170 bool result; | 166 void *mmap_result; 167 int ret; |
| 171 172 if ((size_t)pch_address_space % pagesize != 0 173 || sizeof (pch_address_space) % pagesize != 0) 174 abort (); 175 | 168 169 if ((size_t)pch_address_space % pagesize != 0 170 || sizeof (pch_address_space) % pagesize != 0) 171 abort (); 172 |
| 176 result = (addr == pch_address_space && sz <= sizeof (pch_address_space)); 177 if (! result) | 173 ret = (addr == pch_address_space && sz <= sizeof (pch_address_space)); 174 if (! ret) |
| 178 sz = 0; 179 180 /* Round the size to a whole page size. Normally this is a no-op. */ 181 sz = (sz + pagesize - 1) / pagesize * pagesize; 182 183 if (munmap (pch_address_space + sz, sizeof (pch_address_space) - sz) != 0) 184 fatal_error ("couldn't unmap pch_address_space: %m\n"); 185 | 175 sz = 0; 176 177 /* Round the size to a whole page size. Normally this is a no-op. */ 178 sz = (sz + pagesize - 1) / pagesize * pagesize; 179 180 if (munmap (pch_address_space + sz, sizeof (pch_address_space) - sz) != 0) 181 fatal_error ("couldn't unmap pch_address_space: %m\n"); 182 |
| 186 return result; | 183 if (ret) 184 { 185 mmap_result = mmap (addr, sz, 186 PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, 187 fd, off); 188 189 /* The file might not be mmap-able. */ 190 ret = mmap_result != (void *) MAP_FAILED; 191 192 /* Sanity check for broken MAP_FIXED. */ 193 if (ret && mmap_result != addr) 194 abort (); 195 } 196 197 return ret; |
| 187} | 198} |
| 199 |
|
| 188 189const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER; | 200 201const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER; |