274 lines
6.9 KiB
C
274 lines
6.9 KiB
C
/* Copyright (c) 2007-2009, Stanford University
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Stanford University nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY STANFORD UNIVERSITY ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL STANFORD UNIVERSITY BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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// #define STDDEFINES_H_
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#include <assert.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include <sys/errno.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <cheriintrin.h>
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#include <cheri/cheric.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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// #include "bitmap.h"
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// #include "simple.h"
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#define MAXPAGESIZES 2
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/* Debug printf */
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#define dprintf(...) fprintf(stdout, __VA_ARGS__)
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// Expirement work
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#define FILENAME "/dev/contigmem"
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// static void INITREGULARALLOC() __attribute__((constructor));
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static char *heap_start;
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static char *heap;
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static size_t HEAP_SIZE = 1024 * 1024 * 1024;
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void *ptr;
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int MallocCounter;
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static size_t sizeUsed;
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// Quick malloc implementation with mmap
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void *my_malloc(size_t sz)
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{
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sz = __builtin_align_up(sz, _Alignof(max_align_t));
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// printf("%d \n", sz);
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// printf("%d Malloc counter\n", MallocCounter);
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MallocCounter -= sz;
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void *ptrLink = &ptr[MallocCounter];
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ptrLink = cheri_setbounds(ptrLink, sz);
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return ptrLink;
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// if (heap + sz > heap_start + HEAP_SIZE) return NULL;
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// heap += sz;
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// return heap - sz;
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}
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// Quick cheri free implementation
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void my_free(void *ptr) {
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// printf("free called \n");
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// get bounds from
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int len = cheri_getlen(ptr);
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// printf("free len %d \n", len);
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munmap(ptr, len);
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}
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static int
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pagesizes(size_t ps[MAXPAGESIZES])
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{
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int pscnt;
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pscnt = getpagesizes(ps, MAXPAGESIZES);
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// ATF_REQUIRE_MSG(pscnt != -1, "getpagesizes failed; errno=%d", errno);
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// ATF_REQUIRE_MSG(ps[0] != 0, "psind 0 is %zu", ps[0]);
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// ATF_REQUIRE_MSG(pscnt <= MAXPAGESIZES, "invalid pscnt %d", pscnt);
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// if (pscnt == 1){
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// printf("pscnt is 1");
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// }
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// atf_ tc_skip("no large page support");
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return (pscnt);
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}
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// static void INITREGULARALLOC() {
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// }
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// __attribute__((constructor))
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// static void malloc_init() {
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// fprintf(stderr, "here");
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// size_t sz;
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// // Pre Allocate 400 MB
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// sz = 1073741824;
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// int error, fd, pscnt, pn;
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// size_t ps[MAXPAGESIZES];
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// size_t size[3];
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// pn = getpagesizes(size, 3);
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// dprintf("page size is [%d]", size[2]);
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// pscnt = pagesizes(ps);
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// fd = shm_create_largepage(SHM_ANON, O_CREAT | O_RDWR, 1, SHM_LARGEPAGE_ALLOC_DEFAULT, 0);
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// if (fd < 0 && errno == ENOTTY) {
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// perror("sh_create_largepages");
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// close(fd);
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// exit(EXIT_FAILURE);
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// }
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// // if (fd < 0)
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// // perror("no large page supported");
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// // exit(EXIT_FAILURE);
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// // if (fd < 0 && errno == ENOTTY)
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// // atf_tc_skip("no large page support");
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// // ATF_REQUIRE_MSG(fd >= 0, "shm_create_largepage failed; errno=%d", errno);
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// if (ftruncate(fd, sz) < 0) {
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// perror("ftruncate");
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// close(fd);
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// exit(EXIT_FAILURE);
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// }
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// // if (error != 0 && errno == ENOMEM)
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// // /*
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// // * The test system might not have enough memory to accommodate
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// // * the request.
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// // */
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// // atf_tc_skip("failed to allocate %zu-byte superpage", sz);
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// // ATF_REQUIRE_MSG(error == 0, "ftruncate failed; errno=%d", errno);
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// ptr = mmap(NULL, sz,
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// PROT_READ|PROT_WRITE, MAP_SHARED,fd,0);
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// // Added error handling
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// if(ptr == MAP_FAILED)
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// {
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// perror("mmap");
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// exit(EXIT_FAILURE);
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// }
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// MallocCounter = (int)sz;
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// }
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// __attribute__((destructor))
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// static void malloc_exit() {
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// fprintf(stderr, "lol");
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// }
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static int initialized = 0; /* Is library initialized? */
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/** Shared library constructor. */
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__attribute__((constructor)) void shlib_init(void)
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{
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size_t sz;
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// Pre Allocate 400 MB
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sz = 1073741824;
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int error, fd, pscnt, pn;
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size_t ps[MAXPAGESIZES];
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size_t size[3];
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pn = getpagesizes(size, 3);
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printf("page size is [%d]", size[2]);
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pscnt = pagesizes(ps);
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fd = shm_create_largepage(SHM_ANON, O_CREAT | O_RDWR, 1, SHM_LARGEPAGE_ALLOC_DEFAULT, 0);
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if (fd < 0 && errno == ENOTTY) {
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perror("sh_create_largepages");
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close(fd);
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exit(EXIT_FAILURE);
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}
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// if (fd < 0)
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// perror("no large page supported");
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// exit(EXIT_FAILURE);
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// if (fd < 0 && errno == ENOTTY)
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// atf_tc_skip("no large page support");
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// ATF_REQUIRE_MSG(fd >= 0, "shm_create_largepage failed; errno=%d", errno);
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if (ftruncate(fd, sz) < 0) {
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perror("ftruncate");
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close(fd);
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exit(EXIT_FAILURE);
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}
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// if (error != 0 && errno == ENOMEM)
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// /*
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// * The test system might not have enough memory to accommodate
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// * the request.
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// */
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// atf_tc_skip("failed to allocate %zu-byte superpage", sz);
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// ATF_REQUIRE_MSG(error == 0, "ftruncate failed; errno=%d", errno);
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ptr = mmap(NULL, sz,
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PROT_READ|PROT_WRITE, MAP_SHARED,fd,0);
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// Added error handling
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if(ptr == MAP_FAILED)
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{
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perror("mmap");
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exit(EXIT_FAILURE);
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}
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MallocCounter = (int)sz;
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}
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// /** Shared library destructor. */
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// __attribute__((destructor)) void shlib_fini(void)
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// {
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// printf("Destructor[%d]\n", initialized);
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// fflush(stdout);
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// initialized = 0;
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// }
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/** Shared library function that creates something. */
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// void shlib_create_function(void)
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// {
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// printf("create function[%d]\n", initialized);
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// fflush(stdout);
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// }
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// /** Undo shlib_create_function(). */
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// void shlib_destroy_function(void)
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// {
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// printf("destroy function[%d]\n", initialized);
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// fflush(stdout);
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// }
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