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#include "../config-host.h"
/* SPDX-License-Identifier: MIT */
#ifndef CONFIG_NOLIBC
#error "This file should only be compiled for no libc build"
#endif
#include "lib.h"
#include "syscall.h"
void *__uring_memset(void *s, int c, size_t n)
{
size_t i;
unsigned char *p = s;
for (i = 0; i < n; i++) {
p[i] = (unsigned char) c;
/*
* An empty inline ASM to avoid auto-vectorization
* because it's too bloated for liburing.
*/
__asm__ volatile ("");
}
return s;
}
struct uring_heap {
size_t len;
char user_p[] __attribute__((__aligned__));
};
void *__uring_malloc(size_t len)
{
struct uring_heap *heap;
heap = __sys_mmap(NULL, sizeof(*heap) + len, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
if (IS_ERR(heap))
return NULL;
heap->len = sizeof(*heap) + len;
return heap->user_p;
}
void __uring_free(void *p)
{
struct uring_heap *heap;
if (uring_unlikely(!p))
return;
heap = container_of(p, struct uring_heap, user_p);
__sys_munmap(heap, heap->len);
}
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