diff options
| author | Kartik Agaram <vc@akkartik.com> | 2019-09-27 11:07:55 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2019-09-27 11:07:55 -0700 |
| commit | 514e7a1fd09a95498544b56524164974189551b0 (patch) | |
| tree | 6b675dca448a644f2469e162bb62cde909b2817b | |
| parent | 2483baaccd6b4f8d230a0901ad06bceb6374912d (diff) | |
| download | mu-514e7a1fd09a95498544b56524164974189551b0.tar.gz | |
5689
| -rw-r--r-- | kernel.soso/common.h | 72 |
1 files changed, 37 insertions, 35 deletions
diff --git a/kernel.soso/common.h b/kernel.soso/common.h index 4daf7679..fec1810d 100644 --- a/kernel.soso/common.h +++ b/kernel.soso/common.h @@ -6,24 +6,24 @@ #define halt() asm volatile("hlt") -typedef unsigned long long uint64; -typedef signed long long int64; -typedef unsigned int uint32; -typedef int int32; -typedef unsigned short uint16; -typedef short int16; -typedef unsigned char uint8; -typedef char int8; -typedef unsigned int size_t; +typedef unsigned long long uint64; +typedef signed long long int64; +typedef unsigned int uint32; +typedef int int32; +typedef unsigned short uint16; +typedef short int16; +typedef unsigned char uint8; +typedef char int8; +typedef unsigned int size_t; #define BOOL uint8 #define TRUE 1 #define FALSE 0 #define NULL 0 -#define KERN_PAGE_DIRECTORY 0x00001000 +#define KERN_PAGE_DIRECTORY 0x00001000 -#define KERN_BASE 0x00100000 +#define KERN_BASE 0x00100000 //16M is identity mapped as below. //First 8M we don't touch. Kernel code is there. @@ -37,36 +37,36 @@ typedef unsigned int size_t; #define GFX_MEMORY 0x01000000 //16 mb -#define KERN_HEAP_BEGIN 0x02000000 //32 mb -#define KERN_HEAP_END 0x40000000 // 1 gb +#define KERN_HEAP_BEGIN 0x02000000 //32 mb +#define KERN_HEAP_END 0x40000000 // 1 gb -#define PAGE_INDEX_4K(addr) ((addr) >> 12) -#define PAGE_INDEX_4M(addr) ((addr) >> 22) -#define PAGING_FLAG 0x80000000 // CR0 - bit 31 -#define PSE_FLAG 0x00000010 // CR4 - bit 4 -#define PG_PRESENT 0x00000001 // page directory / table -#define PG_WRITE 0x00000002 -#define PG_USER 0x00000004 -#define PG_4MB 0x00000080 -#define PAGESIZE_4K 0x00001000 -#define PAGESIZE_4M 0x00400000 -#define RAM_AS_4K_PAGES 0x100000 -#define RAM_AS_4M_PAGES 1024 +#define PAGE_INDEX_4K(addr) ((addr) >> 12) +#define PAGE_INDEX_4M(addr) ((addr) >> 22) +#define PAGING_FLAG 0x80000000 // CR0 - bit 31 +#define PSE_FLAG 0x00000010 // CR4 - bit 4 +#define PG_PRESENT 0x00000001 // page directory / table +#define PG_WRITE 0x00000002 +#define PG_USER 0x00000004 +#define PG_4MB 0x00000080 +#define PAGESIZE_4K 0x00001000 +#define PAGESIZE_4M 0x00400000 +#define RAM_AS_4K_PAGES 0x100000 +#define RAM_AS_4M_PAGES 1024 #define KERNELMEMORY_PAGE_COUNT 256 //(KERN_HEAP_END / PAGESIZE_4M) -#define KERN_STACK_SIZE PAGESIZE_4K +#define KERN_STACK_SIZE PAGESIZE_4K //KERN_HEAP_END ends and this one starts -#define USER_OFFSET 0x40000000 -#define USER_OFFSET_END 0xF0000000 -#define USER_OFFSET_MMAP 0xF0000000 -#define USER_OFFSET_MMAP_END 0xFFFFFFFF - -#define USER_EXE_IMAGE 0x200000 //2MB -#define USER_ARGV_ENV_SIZE 0x10000 //65KB -#define USER_ARGV_ENV_LOC (USER_OFFSET + (USER_EXE_IMAGE - USER_ARGV_ENV_SIZE)) +#define USER_OFFSET 0x40000000 +#define USER_OFFSET_END 0xF0000000 +#define USER_OFFSET_MMAP 0xF0000000 +#define USER_OFFSET_MMAP_END 0xFFFFFFFF + +#define USER_EXE_IMAGE 0x200000 //2MB +#define USER_ARGV_ENV_SIZE 0x10000 //65KB +#define USER_ARGV_ENV_LOC (USER_OFFSET + (USER_EXE_IMAGE - USER_ARGV_ENV_SIZE)) //This means we support executable images up to 2MB //And user malloc functions will start from USER_OFFSET + USER_EXE_IMAGE //We will 65KB (0x10000) for argv and environ just before user malloc start @@ -74,7 +74,7 @@ typedef unsigned int size_t; //That means argv and env data will start from USER_OFFSET + 0x1F0000 //Of course libc should know this numbers :) -#define USER_STACK 0xF0000000 +#define USER_STACK 0xF0000000 void outb(uint16 port, uint8 value); void outw(uint16 port, uint16 value); @@ -123,3 +123,5 @@ void beginCriticalSection(); void endCriticalSection(); #endif // COMMON_H + +// vim:expandtab:ts=2 |