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add space to store the FPU context

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This commit is contained in:
Stefan Lankes 2011-04-20 11:34:52 +02:00
parent a9c4b5ddc0
commit d8ad0b8dce
2 changed files with 72 additions and 2 deletions
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67
arch/x86/include/asm/tasks_types.h Normal file
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@ -0,0 +1,67 @@
/*
* Copyright 2011 Stefan Lankes, Chair for Operating Systems,
* RWTH Aachen University
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file is part of MetalSVM.
*
*/
#ifndef __ARCH_TASKS_TYPES__
#define __ARCH_TASKS_TYPES__
#include <metalsvm/stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
long cwd;
long swd;
long twd;
long fip;
long fcs;
long foo;
long fos;
long st_space[20];
long status;
} i387_fsave_t;
typedef struct i387_fxsave_struct {
unsigned short cwd;
unsigned short swd;
unsigned short twd;
unsigned short fop;
long fip;
long fcs;
long foo;
long fos;
long mxcsr;
long reserved;
long st_space[32];
long xmm_space[32];
long padding[56];
} i387_fxsave_t __attribute__ ((aligned (16)));
union fpu_union {
i387_fsave_t fsave;
i387_fxsave_t fxsave;
};
#ifdef __cplusplus
}
#endif
#endif

7
include/metalsvm/tasks_types.h
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@ -33,6 +33,7 @@
#include <metalsvm/vma.h>
#include <metalsvm/spinlock_types.h>
#include <metalsvm/mailbox_types.h>
#include <asm/tasks_types.h>
#include <asm/atomic.h>
#ifdef __cplusplus
@ -57,9 +58,9 @@ typedef struct task {
uint32_t status;
/// Usage in number of pages
atomic_int32_t user_usage;
/// Avoids concurrent access to the page directory
/// Avoids concurrent access to the page directory
spinlock_t pgd_lock;
/// pointer to the page directory
/// pointer to the page directory
struct page_dir* pgd;
/// Lock for the VMA_list
spinlock_t vma_lock;
@ -69,6 +70,8 @@ typedef struct task {
mailbox_wait_msg_t inbox;
/// Mail outbox array
mailbox_wait_msg_t* outbox[MAX_TASKS];
/// FPU state
union fpu_union fpu_state;
} __attribute__((packed)) task_t;
#ifdef __cplusplus