94 lines
1.8 KiB
C++
94 lines
1.8 KiB
C++
// Config
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#include <stddef.h>
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#include <dlmalloc/malloc.h>
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#include <uprintf.h>
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#include <errors.h>
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#include <sync/spinlock.h>
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#include <string/string.h>
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#include <sysdefs/mman.h>
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#include <system/system.h>
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#include <write/write.h>
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#define USE_DL_PREFIX 1
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#define LACKS_SYS_TYPES_H 1
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#define NO_MALLOC_STATS 1
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#define LACKS_ERRNO_H 1
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#define LACKS_TIME_H 1
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#define LACKS_STDLIB_H 1
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#define LACKS_SYS_MMAN_H 1
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#define LACKS_FCNTL_H 1
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#define LACKS_UNISTD_H 1
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#define LACKS_SYS_PARAM_H 1
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#define LACKS_STRINGS_H 1
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#define LACKS_SCHED_H 1
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#define HAVE_MMAP 1
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#define HAVE_MORECORE 0
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#define ABORT writefmt("dlmalloc: Aborting...\n")
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#define MALLOC_FAILURE_ACTION
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#define USE_LOCKS 2
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#define malloc_getpagesize 0x1000
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#define EINVAL E_INVALIDARGUMENT
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#define ENOMEM E_NOMEMORY
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#define MLOCK_T SpinLock
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int ACQUIRE_LOCK(SpinLock *sl) {
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spinlock_acquire(sl);
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return 0;
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}
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int RELEASE_LOCK(SpinLock *sl) {
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spinlock_release(sl);
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return 0;
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}
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int INITIAL_LOCK(SpinLock *sl) {
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spinlock_init(sl);
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return 0;
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}
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static MLOCK_T malloc_global_mutex = { 0 };
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#define PAGE_SIZE 0x1000
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static size_t _roundpage(size_t sz) {
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return (sz + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
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}
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#define MAP_PRIVATE 0
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#define PROT_READ 0
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#define PROT_WRITE 0
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#define O_RDWR 0
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#define EMUL_DEV_ZERO_FD 123
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#define EMUL_MAP_FAILED ((void *)-1)
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int open(const char *path, int flags, ...) {
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return EMUL_DEV_ZERO_FD;
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}
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void *mmap(void *addr, size_t len, int prot, int flags, int fd, int off) {
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(void)off;
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uint8_t *outaddr = NULL;
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size_t need = _roundpage(len);
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int32_t err = mman_map(NULL, need, MMAN_MAP_PF_RW, 0, &outaddr);
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if (err != E_OK || outaddr == NULL) {
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return EMUL_MAP_FAILED;
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}
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if (fd == EMUL_DEV_ZERO_FD) {
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string_memset(outaddr, 0, need);
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}
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return outaddr;
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}
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int munmap(void *addr, size_t len) {
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(void)len;
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mman_unmap((uint8_t *)addr);
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return 0;
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}
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