/*
 * Copyright 2022 Haiku, Inc. All Rights Reserved.
 * Copyright 2007-2011, Ingo Weinhold, ingo_weinhold@gmx.de.
 * Distributed under the terms of the MIT License.
 */

// This file is used to get C structure offsets into assembly code.
// The build system assembles the file and processes the output to create
// a header file with macro definitions, that can be included from assembly
// code.


#include <computed_asm_macros.h>

#include <arch_cpu.h>
#include <cpu.h>
#include <ksignal.h>
#include <ksyscalls.h>
#include <thread_types.h>


#define DEFINE_MACRO(macro, value) DEFINE_COMPUTED_ASM_MACRO(macro, value)

#define DEFINE_OFFSET_MACRO(prefix, structure, member) \
        DEFINE_MACRO(prefix##_##member, offsetof(struct structure, member));

#define DEFINE_SIZEOF_MACRO(prefix, structure) \
        DEFINE_MACRO(prefix##_sizeof, sizeof(struct structure));


void
dummy()
{
        DEFINE_SIZEOF_MACRO(IFRAME, iframe);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, elr);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, spsr);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, x);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, lr);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, sp);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, fp);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, esr);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, far);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, tpidr);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, fpu);

        DEFINE_OFFSET_MACRO(CPU_ENT, cpu_ent, fault_handler);
        DEFINE_OFFSET_MACRO(CPU_ENT, cpu_ent, fault_handler_stack_pointer);
}


// fp must be located at x[29] so that we can load/store
// x[28] and fp with a single LDP/STP instruction.
STATIC_ASSERT(offsetof(iframe, fp) == offsetof(iframe, x) + 29 * 8);