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os-k/include/kernel/base.h

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//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
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// Desc: Kaleid kernel base include file //
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// //
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// //
// Copyright © 2018-2019 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K is free software: you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation, either version 3 of the License, or //
// any later version. //
// //
// OS/K is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY//without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
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//----------------------------------------------------------------------------//
#ifndef _KALBASE_H
#include <kalbase.h>
#endif
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#ifdef __cplusplus
#error "Kaleid's kernel won't compile in C++"
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#endif
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#ifndef _KALKERN_BASE_H
#define _KALKERN_BASE_H
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//----------------------------------------------------------------------------//
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typedef struct Lock_t Lock_t;
typedef struct Buffer_t Buffer_t;
typedef struct ListHead_t ListHead_t;
typedef struct ListNode_t ListNode_t;
typedef struct Thread_t Thread_t;
typedef struct Process_t Process_t;
typedef struct BootInfo_t BootInfo_t;
typedef struct Processor_t Processor_t;
typedef struct ISRFrame_t ISRFrame_t;
typedef enum ProcState_t ProcState_t;
typedef struct IdtDescriptor_t IdtDescriptor_t;
typedef struct IdtEntry_t IdtEntry_t;
typedef struct IdtPtr_t IdtPtr_t;
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typedef struct ISRList_t ISRList_t;
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typedef struct ISRFrame_t ISRFrame_t;
typedef struct MemoryMap_t MemoryMap_t;
typedef struct MapEntry_t MapEntry_t;
typedef struct GdtEntry_t GdtEntry_t;
typedef struct GdtPtr_t GdtPtr_t;
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//----------------------------------------------------------------------------//
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//
// Holds all CPU-local variables
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//
struct Processor_t
{
// CPU number, index in CPU list
int index;
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// CPU APIC id
int apicId;
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// CPU Vendor String (always 12 characters)
char vendorStr[12];
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// CPU Model code (enum in cpu.h)
int modelCode;
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// CPU Features flag
uint featureFlag;
// Number of ticks since boot time
ulong ticks;
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// Current process & thread
Process_t *process;
Thread_t *thread;
// Need re-schedule?
bool needReSched;
// Is preemption ON? ("PREEMPT_ON" in sched.h)
ulong preemptCount;
// List heads for the four priority classes
ListHead_t *idlePrioProcs;
ListHead_t *reglPrioProcs;
ListHead_t *servPrioProcs;
ListHead_t *timeCritProcs;
};
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struct ISRFrame_t {
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/* The register file */
ulong regs[15];
/* The error code and interrupt id */
ulong intNo;
ulong ErrorCode;
/* These are pushed automatically by the CPU */
ulong rip;
ulong cs;
ulong rflags;
ulong rsp;
ulong ss;
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} __attribute__((__packed__));
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//----------------------------------------------------------------------------//
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#ifndef NCPUS
#define NCPUS 1
#endif
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// Current CPU number
#define _KeCurCPU 0
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extern int KeCPUCount;
extern volatile Processor_t *KeCurCPU;
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extern Processor_t _KeCPUTable[NCPUS];
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//----------------------------------------------------------------------------//
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#define DEC_PER_CPU(pref, name, field, type) \
static inline type pref##Get##name() { return KeGetCurCPU()->field; } \
static inline void _##pref##Set##name(type __val) \
{ KeGetCurCPU()->field = __val; }
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#define BARRIER() \
do { \
asm volatile("": : :"memory"); \
__sync_synchronize(); \
} while(0)
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//----------------------------------------------------------------------------//
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error_t KernLog(const char *, ...);
#ifndef _NO_DEBUG
void DebugLog(const char *, ...);
#else
#define DebugLog(fmt, ...) ((void)0)
#endif
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//----------------------------------------------------------------------------//
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extern volatile bool KeIsPanicking;
noreturn void KeStartPanic(const char *, ...);
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//----------------------------------------------------------------------------//
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#define XBUG(c) do { \
volatile ushort *_vga \
=(volatile ushort*)0xB8000; \
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while(_vga<(volatile ushort*)(0xB8000+(80*25*2))) \
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*_vga++=(c|(0xf<<8)); \
asm volatile("cli\nhlt"); \
}while(0)
#define BUG() XBUG('B')
#define BUGON(x) if(x)BUG()
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//----------------------------------------------------------------------------//
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#define __GET_GETRIP() \
__attribute__((__noinline__)) \
static ulong __getrip() \
{ return (size_t)__builtin_return_address(0); }
#define __PRINT_RIP() \
DebugLog("%s.RIP=%p\n",__func__,__getrip())
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//----------------------------------------------------------------------------//
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#endif