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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2016-20 Intel Corporation. */
#include <stddef.h>
#include "defines.h"
/*
* Data buffer spanning two pages that will be placed first in .data
* segment. Even if not used internally the second page is needed by
* external test manipulating page permissions.
*/
static uint8_t encl_buffer[8192] = { 1 };
static void *memcpy(void *dest, const void *src, size_t n)
{
size_t i;
for (i = 0; i < n; i++)
((char *)dest)[i] = ((char *)src)[i];
return dest;
}
static void do_encl_op_put_to_buf(void *op)
{
struct encl_op_put_to_buf *op2 = op;
memcpy(&encl_buffer[0], &op2->value, 8);
}
static void do_encl_op_get_from_buf(void *op)
{
struct encl_op_get_from_buf *op2 = op;
memcpy(&op2->value, &encl_buffer[0], 8);
}
static void do_encl_op_put_to_addr(void *_op)
{
struct encl_op_put_to_addr *op = _op;
memcpy((void *)op->addr, &op->value, 8);
}
static void do_encl_op_get_from_addr(void *_op)
{
struct encl_op_get_from_addr *op = _op;
memcpy(&op->value, (void *)op->addr, 8);
}
static void do_encl_op_nop(void *_op)
{
}
void encl_body(void *rdi, void *rsi)
{
const void (*encl_op_array[ENCL_OP_MAX])(void *) = {
do_encl_op_put_to_buf,
do_encl_op_get_from_buf,
do_encl_op_put_to_addr,
do_encl_op_get_from_addr,
do_encl_op_nop,
};
struct encl_op_header *op = (struct encl_op_header *)rdi;
if (op->type < ENCL_OP_MAX)
(*encl_op_array[op->type])(op);
}
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