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43 lines
1 KiB
C
43 lines
1 KiB
C
#ifndef EXOSPHERE_UTILS_H
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#define EXOSPHERE_UTILS_H
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#include <stdint.h>
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#include <stddef.h>
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#define BIT(x) (1u << (x))
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#define BITL(x) (1ull << (x))
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void panic(void);
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uint32_t get_physical_address(void *vaddr);
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static inline uint32_t read32le(const void *dword, size_t offset) {
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return *(uint32_t *)((uintptr_t)dword + offset);
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}
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static inline uint32_t read32be(const unsigned char *dword, size_t offset) {
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return __builtin_bswap32(read32le(dword, offset));
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}
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static __attribute__((noinline)) int check_32bit_additive_overflow(uint32_t a, uint32_t b) {
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uint64_t x = (uint64_t)a + (uint64_t)b;
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return x > (uint64_t)(UINT32_MAX);
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}
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static __attribute__((noinline)) int overlaps(uint64_t as, uint64_t ae, uint64_t bs, uint64_t be)
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{
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if(as <= bs && bs <= ae)
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return 1;
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if(bs <= as && as <= be)
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return 1;
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return 0;
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}
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static inline unsigned int get_core_id(void) {
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unsigned int core_id;
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__asm__ __volatile__ ("mrs %0, MPIDR_EL1" : "=r"(core_id));
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return core_id & 3;
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}
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#endif
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