1 /*- 2 * Copyright 1996-1998 John D. Polstra. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28 #include <stddef.h> 29 #include <stdlib.h> 30 #include <string.h> 31 #include <unistd.h> 32 #include "rtld.h" 33 #include "rtld_printf.h" 34 35 void * 36 xcalloc(size_t number, size_t size) 37 { 38 void *p; 39 40 p = calloc(number, size); 41 if (p == NULL) { 42 rtld_fdputstr(STDERR_FILENO, "Out of memory\n"); 43 _exit(1); 44 } 45 return (p); 46 } 47 48 void * 49 xmalloc(size_t size) 50 { 51 void *p = malloc(size); 52 if (p == NULL) { 53 rtld_fdputstr(STDERR_FILENO, "Out of memory\n"); 54 _exit(1); 55 } 56 return p; 57 } 58 59 char * 60 xstrdup(const char *str) 61 { 62 char *copy; 63 size_t len; 64 65 len = strlen(str) + 1; 66 copy = xmalloc(len); 67 memcpy(copy, str, len); 68 return (copy); 69 } 70 71 void * 72 malloc_aligned(size_t size, size_t align) 73 { 74 void *mem, *res; 75 76 if (align < sizeof(void *)) 77 align = sizeof(void *); 78 79 mem = xmalloc(size + sizeof(void *) + align - 1); 80 res = (void *)round((uintptr_t)mem + sizeof(void *), align); 81 *(void **)((uintptr_t)res - sizeof(void *)) = mem; 82 return (res); 83 } 84 85 void 86 free_aligned(void *ptr) 87 { 88 void *mem; 89 uintptr_t x; 90 91 if (ptr == NULL) 92 return; 93 x = (uintptr_t)ptr; 94 x -= sizeof(void *); 95 mem = *(void **)x; 96 free(mem); 97 } 98