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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"
#include "sgx_rsrv_mem_mngr.h"
#if WASM_ENABLE_SGX_IPFS != 0
#include "sgx_ipfs.h"
#endif
static os_print_function_t print_function = NULL;
int
bh_platform_init()
{
int ret = BHT_OK;
#if WASM_ENABLE_SGX_IPFS != 0
ret = ipfs_init();
#endif
return ret;
}
void
bh_platform_destroy()
{
#if WASM_ENABLE_SGX_IPFS != 0
ipfs_destroy();
#endif
}
void *
os_malloc(unsigned size)
{
return malloc(size);
}
void *
os_realloc(void *ptr, unsigned size)
{
return realloc(ptr, size);
}
void
os_free(void *ptr)
{
free(ptr);
}
int
os_dumps_proc_mem_info(char *out, unsigned int size)
{
return -1;
}
int
putchar(int c)
{
return 0;
}
int
puts(const char *s)
{
return 0;
}
void
os_set_print_function(os_print_function_t pf)
{
print_function = pf;
}
#define FIXED_BUFFER_SIZE 4096
int
os_printf(const char *message, ...)
{
int bytes_written = 0;
if (print_function != NULL) {
char msg[FIXED_BUFFER_SIZE] = { '\0' };
va_list ap;
va_start(ap, message);
vsnprintf(msg, FIXED_BUFFER_SIZE, message, ap);
va_end(ap);
bytes_written += print_function(msg);
}
return bytes_written;
}
int
os_vprintf(const char *format, va_list arg)
{
int bytes_written = 0;
if (print_function != NULL) {
char msg[FIXED_BUFFER_SIZE] = { '\0' };
vsnprintf(msg, FIXED_BUFFER_SIZE, format, arg);
bytes_written += print_function(msg);
}
return bytes_written;
}
char *
strcpy(char *dest, const char *src)
{
const unsigned char *s = src;
unsigned char *d = dest;
while ((*d++ = *s++)) {
}
return dest;
}
void *
os_mmap(void *hint, size_t size, int prot, int flags)
{
int mprot = 0;
uint64 aligned_size, page_size;
void *ret = NULL;
sgx_status_t st = 0;
page_size = getpagesize();
aligned_size = (size + page_size - 1) & ~(page_size - 1);
if (aligned_size >= UINT32_MAX)
return NULL;
ret = sgx_alloc_rsrv_mem(aligned_size);
if (ret == NULL) {
os_printf("os_mmap(size=%u, aligned size=%lu, prot=0x%x) failed.", size,
aligned_size, prot);
return NULL;
}
if (prot & MMAP_PROT_READ)
mprot |= SGX_PROT_READ;
if (prot & MMAP_PROT_WRITE)
mprot |= SGX_PROT_WRITE;
if (prot & MMAP_PROT_EXEC)
mprot |= SGX_PROT_EXEC;
st = sgx_tprotect_rsrv_mem(ret, aligned_size, mprot);
if (st != SGX_SUCCESS) {
os_printf("os_mmap(size=%u, prot=0x%x) failed to set protect.", size,
prot);
sgx_free_rsrv_mem(ret, aligned_size);
return NULL;
}
return ret;
}
void
os_munmap(void *addr, size_t size)
{
uint64 aligned_size, page_size;
page_size = getpagesize();
aligned_size = (size + page_size - 1) & ~(page_size - 1);
sgx_free_rsrv_mem(addr, aligned_size);
}
int
os_mprotect(void *addr, size_t size, int prot)
{
int mprot = 0;
sgx_status_t st = 0;
uint64 aligned_size, page_size;
page_size = getpagesize();
aligned_size = (size + page_size - 1) & ~(page_size - 1);
if (prot & MMAP_PROT_READ)
mprot |= SGX_PROT_READ;
if (prot & MMAP_PROT_WRITE)
mprot |= SGX_PROT_WRITE;
if (prot & MMAP_PROT_EXEC)
mprot |= SGX_PROT_EXEC;
st = sgx_tprotect_rsrv_mem(addr, aligned_size, mprot);
if (st != SGX_SUCCESS)
os_printf("os_mprotect(addr=0x%" PRIx64 ", size=%u, prot=0x%x) failed.",
(uintptr_t)addr, size, prot);
return (st == SGX_SUCCESS ? 0 : -1);
}
void
os_dcache_flush(void)
{}
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