79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
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#ifndef COSMOPOLITAN_LIBC_RUNTIME_MAPPINGS_H_
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#define COSMOPOLITAN_LIBC_RUNTIME_MAPPINGS_H_
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#include "libc/dce.h"
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#include "libc/macros.h"
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#include "libc/runtime/runtime.h"
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#define MMAP_MAX 300 /* TODO: crunch */
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#define kStackCeiling 0x0000700000000000L
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#define kStackBottom 0x0000600000000000L
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#define kFixedMappingsStart 0x0000100000000000L /* cosmo won't auto-assign */
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#define kFixedMappingsSize 0x0000100000000000L /* 16TB */
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#define kMappingsStart 0x0000200000000000L /* cosmo auto-assigns here */
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#define kMappingsSize 0x0000100000000000L /* 16TB */
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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#define ISOVERLAPPING(C1, C2) \
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(((C1).x >= (C2).x && (C1).x <= (C2).y) || \
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((C1).y >= (C2).x && (C1).y <= (C2).y))
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#define ADDR_TO_COORD(ADDR) \
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(int)(((intptr_t)(ADDR) & ~(FRAMESIZE - 1)) / FRAMESIZE)
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#define COORD_TO_ADDR(COORD) (void *)((intptr_t)(COORD)*FRAMESIZE)
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#define COORD_TO_SIZE(COORD) (void *)((intptr_t)(COORD)*FRAMESIZE)
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#define ADDRSIZE_TO_COORD(ADDR, SIZE) \
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((struct MemoryCoord){ \
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.x = ADDR_TO_COORD(ADDR), \
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.y = ADDR_TO_COORD(ADDR) + \
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((unsigned)(ROUNDUP((SIZE), FRAMESIZE) / FRAMESIZE) - 1)})
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#define COORD_TO_ADDRSIZE(COORD) \
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((struct AddrSize){ \
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.addr = COORD_TO_ADDR((COORD).x), \
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.size = ((size_t)((COORD).y - (COORD).x + 1) * FRAMESIZE)})
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#define GRANULATE_ADDRSIZE(ADDR, SIZE) \
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do { \
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struct AddrSize AdSiz; \
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struct MemoryCoord MemCo; \
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MemCo = ADDRSIZE_TO_COORD(*(ADDR), *(SIZE)); \
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AdSiz = COORD_TO_ADDRSIZE(MemCo); \
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*(ADDR) = AdSiz.addr; \
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*(SIZE) = AdSiz.size; \
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} while (0)
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struct AddrSize {
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void *addr;
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size_t size;
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};
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/**
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* Ordered inclusive 64kb-granular ranges on NexGen32e w/o PML5.
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* c.𝑥 ≤ c.𝑦 so say c all.
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* cₙ.𝑥 ≤ cₙ₊₁.𝑥 so say c all.
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*/
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struct Mappings {
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size_t i;
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struct MemoryCoord {
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int32_t x, y;
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} p[MMAP_MAX];
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int64_t h[MMAP_MAX];
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};
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extern struct Mappings _mm;
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bool isheap(void *);
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size_t findmapping(int32_t);
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size_t findmapping_(int32_t, const struct MemoryCoord *, size_t);
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_RUNTIME_MAPPINGS_H_ */
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