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// SPDX-License-Identifier: GPL-3.0-or-later
/* seitan - Syscall Expressive Interpreter, Transformer and Notifier
*
* cooker/gluten.c - gluten (bytecode) file and layout functions
*
* Copyright 2023 Red Hat GmbH
* Author: Stefano Brivio <sbrivio@redhat.com>
*/
#include "cooker.h"
#include "gluten.h"
#include "util.h"
size_t gluten_size[TYPE_COUNT] = {
[INT] = sizeof(int),
[INTMASK] = sizeof(int),
[INTFLAGS] = sizeof(int),
[U32] = sizeof(uint32_t),
[U32MASK] = sizeof(uint32_t),
[U32FLAGS] = sizeof(uint32_t),
[LONG] = sizeof(long),
[LONGMASK] = sizeof(long),
[LONGFLAGS] = sizeof(long),
[PID] = sizeof(pid_t),
[PORT] = sizeof(in_port_t),
[IPV4] = sizeof(struct in_addr),
[IPV6] = sizeof(struct in6_addr),
};
struct gluten_offset gluten_alloc(struct gluten_ctx *g, size_t size)
{
struct gluten_offset ret = g->dp;
debug(" allocating %lu at offset %i", size, g->dp.offset);
if ((g->dp.offset += size) >= DATA_SIZE)
die("Temporary data size exceeded");
return ret;
}
struct gluten_offset gluten_alloc_type(struct gluten_ctx *g, enum type type)
{
return gluten_alloc(g, gluten_size[type]);
}
void gluten_init(struct gluten_ctx *g)
{
(void)g;
g->ip.type = g->lr.type = OFFSET_INSTRUCTION;
g->dp.type = OFFSET_DATA;
g->cp.type = OFFSET_RO_DATA;
}
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