haiku/headers/private/system/arch/x86/arch_real_time_data.h
Jérôme Duval db9b70ee54 kernel: add a compatibility commpage on x86_64.
* x86 uses a commpage with 32-bit addresses, incompatible with the one used for
x86_64. For this reason, a compatibility commpage is needed to support a 32-bit
userland on x86_64.
* define ADDRESS_TYPE as a macro for addr_t (default) or uint32 (for the 32-bit
commpage).
* team_create_thread_start_internal() will use clone_commpage_area() with
KERNEL_USER_DATA_BASE or clone_commpage_compat_area() with
KERNEL_USER32_DATA_BASE, to setup the correct commpage.
* real_time_clock (in compatibility mode) also updates the compatibility
commpage with real time data.

Change-Id: I61605077ce0beabab4439ef54edd1eae26f26fd2
2018-05-18 05:11:07 +00:00

20 lines
485 B
C

/*
* Copyright 2018 Haiku Inc. All Rights Reserved.
* Copyright 2006, Ingo Weinhold <bonefish@cs.tu-berlin.de>.
* All rights reserved. Distributed under the terms of the MIT License.
*/
#ifndef _KERNEL_ARCH_REAL_TIME_DATA_H
#define _KERNEL_ARCH_REAL_TIME_DATA_H
#include <StorageDefs.h>
#include <SupportDefs.h>
struct arch_real_time_data {
bigtime_t system_time_offset;
uint32 system_time_conversion_factor;
uint32 _padding;
};
#endif /* _KERNEL_ARCH_REAL_TIME_DATA_H */