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/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "platform_api_vmcore.h"
#include "platform_api_extension.h"
void *
os_mmap(void *hint, size_t size, int prot, int flags)
{
if (prot & MMAP_PROT_EXEC) {
// Memory allocation with MALLOC_CAP_EXEC will return 4-byte aligned
// Reserve extra 4 byte to fixup alignment and size for the pointer to
// the originally allocated address
void *buf_origin =
heap_caps_malloc(size + 4 + sizeof(uintptr_t), MALLOC_CAP_EXEC);
if (!buf_origin) {
return NULL;
}
void *buf_fixed = buf_origin + sizeof(void *);
if ((uintptr_t)buf_fixed & (uintptr_t)0x7) {
buf_fixed = (void *)((uintptr_t)(buf_fixed + 4) & (~(uintptr_t)7));
}
uintptr_t *addr_field = buf_fixed - sizeof(uintptr_t);
*addr_field = (uintptr_t)buf_origin;
return buf_fixed;
}
else {
return os_malloc(size);
}
}
void
os_munmap(void *addr, size_t size)
{
// We don't need special handling of the executable allocations
// here, free() of esp-idf handles it properly
return os_free(addr);
}
int
os_mprotect(void *addr, size_t size, int prot)
{
return 0;
}
void
os_dcache_flush()
{}
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