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Added the missing clear_caches() function and syscall. Does not yet do anything (which

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is perfectly okay on x86 anyway, but should be moved into the arch stuff).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@11869 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2005-03-17 17:06:56 +00:00
parent 6d1ec1085b
commit a36a94da37
3 changed files with 32 additions and 9 deletions
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headers/private/kernel/cpu.h
+11 -8
View File
@@ -1,17 +1,18 @@
/* /*
** Copyright 2002-2004, The Haiku Team. All rights reserved. * Copyright 2002-2005, Haiku Inc. All rights reserved.
** Distributed under the terms of the Haiku License. * Distributed under the terms of the MIT License.
** *
** Copyright 2002, Travis Geiselbrecht. All rights reserved. * Copyright 2002, Travis Geiselbrecht. All rights reserved.
** Distributed under the terms of the NewOS License. * Distributed under the terms of the NewOS License.
*/ */
#ifndef _KERNEL_CPU_H #ifndef _KERNEL_CPU_H
#define _KERNEL_CPU_H #define _KERNEL_CPU_H
#include <smp.h> #include <smp.h>
#include <timer.h> #include <timer.h>
#include <boot/kernel_args.h>
struct kernel_args;
/* CPU local data structure */ /* CPU local data structure */
@@ -24,6 +25,7 @@ typedef union cpu_ent {
int preempted; int preempted;
timer quantum_timer; timer quantum_timer;
} info; } info;
// ToDo: align manually on CPU cache lines if possible
uint32 align[16]; uint32 align[16];
} cpu_ent; } cpu_ent;
@@ -42,9 +44,10 @@ status_t cpu_init(struct kernel_args *args);
status_t cpu_init_post_vm(struct kernel_args *args); status_t cpu_init_post_vm(struct kernel_args *args);
cpu_ent *get_cpu_struct(void); cpu_ent *get_cpu_struct(void);
extern inline cpu_ent *get_cpu_struct(void) { return &cpu[smp_get_current_cpu()]; } extern inline cpu_ent *get_cpu_struct(void) { return &cpu[smp_get_current_cpu()]; }
void _user_clear_caches(void *address, size_t length, uint32 flags);
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif
headers/private/kernel/syscalls.h
+2
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@@ -271,6 +271,8 @@ extern area_id _kern_register_messaging_service(sem_id lockingSem,
sem_id counterSem); sem_id counterSem);
extern status_t _kern_unregister_messaging_service(); extern status_t _kern_unregister_messaging_service();
extern void _kern_clear_caches(void *address, size_t length, uint32 flags);
#ifdef __INTEL__ #ifdef __INTEL__
// our only x86 only syscall // our only x86 only syscall
extern status_t _kern_get_cpuid(cpuid_info *info, uint32 eax, uint32 cpu); extern status_t _kern_get_cpuid(cpuid_info *info, uint32 eax, uint32 cpu);
src/kernel/core/cpu.c
+19 -1
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@@ -1,5 +1,5 @@
/* /*
* Copyright 2002-2004, Axel Dörfler, [email protected]. * Copyright 2002-2005, Axel Dörfler, [email protected].
* Distributed under the terms of the MIT License. * Distributed under the terms of the MIT License.
* *
* Copyright 2002, Travis Geiselbrecht. All rights reserved. * Copyright 2002, Travis Geiselbrecht. All rights reserved.
@@ -47,3 +47,21 @@ cpu_preboot_init(kernel_args *args)
{ {
return arch_cpu_preboot_init(args); return arch_cpu_preboot_init(args);
} }
void
clear_caches(void *address, size_t length, uint32 flags)
{
// ToDo: implement me!
}
// #pragma mark -
void
_user_clear_caches(void *address, size_t length, uint32 flags)
{
clear_caches(address, length, flags);
}