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