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comparison src/memlayout.h @ 0:83c23a36980d

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author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Fri, 26 May 2017 23:11:05 +0900
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-1:000000000000 0:83c23a36980d
1 // Memory layout
2
3 // Key addresses for address space layout (see kmap in vm.c for layout)
4 #define EXTMEM 0x20000
5 #define KERNBASE 0x80000000 // First kernel virtual address
6 #define KERNLINK (KERNBASE+EXTMEM) // Address where kernel is linked
7
8 // we first map 1MB low memory containing kernel code.
9 #define INIT_KERNMAP 0x100000
10
11 #ifndef __ASSEMBLER__
12
13 static inline uint v2p(void *a) { return ((uint) (a)) - KERNBASE; }
14 static inline void *p2v(uint a) { return (void *) ((a) + KERNBASE); }
15
16 #endif
17
18 #define V2P(a) (((uint) (a)) - KERNBASE)
19 #define P2V(a) (((void *) (a)) + KERNBASE)
20
21 #define V2P_WO(x) ((x) - KERNBASE) // same as V2P, but without casts
22 #define P2V_WO(x) ((x) + KERNBASE) // same as V2P, but without casts