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https://github.com/Atmosphere-NX/Atmosphere.git
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77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
#ifndef FUSEE_UTILS_H
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#define FUSEE_UTILS_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <string.h>
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#define BIT(n) (1u << (n))
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#define BITL(n) (1ull << (n))
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#define MASK(n) (BIT(n) - 1)
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#define MASKL(n) (BITL(n) - 1)
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#define MASK2(a,b) (MASK(a) & ~MASK(b))
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#define MASK2L(a,b) (MASKL(a) & ~MASKL(b))
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#define MAKE_REG32(a) (*(volatile uint32_t *)(a))
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#define ALIGN(m) __attribute__((aligned(m)))
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#define PACKED __attribute__((packed))
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#define ALINLINE __attribute__((always_inline))
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#define NOINLINE __attribute__((noinline))
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#define SET_SYSREG(reg, val) do { temp_reg = (val); __asm__ __volatile__ ("msr " #reg ", %0" :: "r"(temp_reg) : "memory"); } while(false)
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static inline uintptr_t get_physical_address(const void *addr) {
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return (uintptr_t)addr;
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}
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static inline uint32_t read32le(const volatile void *dword, size_t offset) {
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uintptr_t addr = (uintptr_t)dword + offset;
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uint32_t dst;
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memcpy(&dst, (void *)addr, 4);
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return dst;
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}
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static inline uint32_t read32be(const volatile void *dword, size_t offset) {
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return __builtin_bswap32(read32le(dword, offset));
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}
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static inline uint64_t read64le(const volatile void *qword, size_t offset) {
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uintptr_t addr = (uintptr_t)qword + offset;
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uint64_t dst;
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memcpy(&dst, (void *)addr, 8);
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return dst;
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}
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static inline uint64_t read64be(const volatile void *qword, size_t offset) {
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return __builtin_bswap64(read64le(qword, offset));
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}
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static inline void write32le(volatile void *dword, size_t offset, uint32_t value) {
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memcpy((void *)((uintptr_t)dword + offset), &value, 4);
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}
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static inline void write32be(volatile void *dword, size_t offset, uint32_t value) {
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write32le(dword, offset, __builtin_bswap32(value));
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}
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static inline void write64le(volatile void *qword, size_t offset, uint64_t value) {
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memcpy((void *)((uintptr_t)qword + offset), &value, 8);
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}
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static inline void write64be(volatile void *qword, size_t offset, uint64_t value) {
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write64le(qword, offset, __builtin_bswap64(value));
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}
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static inline bool check_32bit_additive_overflow(uint32_t a, uint32_t b) {
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return __builtin_add_overflow_p(a, b, (uint32_t)0);
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}
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__attribute__ ((noreturn)) void panic(uint32_t code);
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__attribute__ ((noreturn)) void generic_panic(void);
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__attribute__ ((noreturn)) void panic_predefined(uint32_t which);
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bool overlaps(uint64_t as, uint64_t ae, uint64_t bs, uint64_t be);
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#endif
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