/*
 * 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()
{
        // struct cpu_ent
        DEFINE_OFFSET_MACRO(CPU_ENT, cpu_ent, fault_handler);
        DEFINE_OFFSET_MACRO(CPU_ENT, cpu_ent, fault_handler_stack_pointer);

        // struct Team
        DEFINE_OFFSET_MACRO(TEAM, Team, commpage_address);

        // struct Thread
        DEFINE_OFFSET_MACRO(THREAD, Thread, team);
        DEFINE_OFFSET_MACRO(THREAD, Thread, time_lock);
        DEFINE_OFFSET_MACRO(THREAD, Thread, kernel_time);
        DEFINE_OFFSET_MACRO(THREAD, Thread, user_time);
        DEFINE_OFFSET_MACRO(THREAD, Thread, last_time);
        DEFINE_OFFSET_MACRO(THREAD, Thread, in_kernel);
        DEFINE_OFFSET_MACRO(THREAD, Thread, flags);
        DEFINE_OFFSET_MACRO(THREAD, Thread, kernel_stack_top);
        DEFINE_OFFSET_MACRO(THREAD, Thread, fault_handler);

#ifdef __x86_64__
        DEFINE_MACRO(THREAD_user_fpu_state, offsetof(Thread, arch_info.user_fpu_state));

        // struct arch_thread
        DEFINE_OFFSET_MACRO(ARCH_THREAD, arch_thread, syscall_rsp);
        DEFINE_OFFSET_MACRO(ARCH_THREAD, arch_thread, user_rsp);
        DEFINE_OFFSET_MACRO(ARCH_THREAD, arch_thread, current_stack);
#endif

        // struct iframe
        DEFINE_SIZEOF_MACRO(IFRAME, iframe);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, cs);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, ax);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, dx);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, di);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, si);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, vector);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, ip);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, flags);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, user_sp);
#ifdef __x86_64__
        DEFINE_OFFSET_MACRO(IFRAME, iframe, r8);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, r9);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, r10);
        DEFINE_OFFSET_MACRO(IFRAME, iframe, fpu);
#else
        DEFINE_OFFSET_MACRO(IFRAME, iframe, orig_eax);
#endif

        // struct syscall_info
        DEFINE_SIZEOF_MACRO(SYSCALL_INFO, syscall_info);
        DEFINE_OFFSET_MACRO(SYSCALL_INFO, syscall_info, function);
        DEFINE_OFFSET_MACRO(SYSCALL_INFO, syscall_info, parameter_size);

        // struct extended_syscall_info
        DEFINE_SIZEOF_MACRO(EXTENDED_SYSCALL_INFO, extended_syscall_info);
        DEFINE_OFFSET_MACRO(EXTENDED_SYSCALL_INFO, extended_syscall_info,
                parameter_count);
        DEFINE_OFFSET_MACRO(EXTENDED_SYSCALL_INFO, extended_syscall_info,
                parameters);

        // struct syscall_parameter_info
        DEFINE_SIZEOF_MACRO(SYSCALL_PARAMETER_INFO, syscall_parameter_info);
        DEFINE_OFFSET_MACRO(SYSCALL_PARAMETER_INFO, syscall_parameter_info,
                used_size);

        // struct signal_frame_data
        DEFINE_SIZEOF_MACRO(SIGNAL_FRAME_DATA, signal_frame_data);
        DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, info);
        DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, context);
        DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, user_data);
        DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, handler);
        DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, siginfo_handler);
        DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, commpage_address);

        // struct ucontext_t
        DEFINE_OFFSET_MACRO(UCONTEXT_T, __ucontext_t, uc_mcontext);

        // struct vregs
        DEFINE_SIZEOF_MACRO(VREGS, vregs);

        // struct siginfo_t
        DEFINE_OFFSET_MACRO(SIGINFO_T, __siginfo_t, si_signo);
}