mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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131 lines
4.9 KiB
C
131 lines
4.9 KiB
C
/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#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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volatile uint32_t *target = (uint32_t *)addr;
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return *target;
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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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volatile uint64_t *target = (uint64_t *)addr;
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return *target;
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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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uintptr_t addr = (uintptr_t)dword + offset;
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volatile uint32_t *target = (uint32_t *)addr;
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*target = value;
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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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uintptr_t addr = (uintptr_t)qword + offset;
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volatile uint64_t *target = (uint64_t *)addr;
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*target = value;
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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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static inline bool check_32bit_address_loadable(uintptr_t addr) {
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/* FWIW the bootROM forbids loading anything between 0x40000000 and 0x40010000, using it for itself... */
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return (addr >= 0x40010000u && addr < 0x40040000u) || addr >= 0x80000000u;
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}
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static inline bool check_32bit_address_range_loadable(uintptr_t addr, size_t size) {
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return
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!__builtin_add_overflow_p(addr, size, (uintptr_t)0) && /* the range doesn't overflow */
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check_32bit_address_loadable(addr) && check_32bit_address_loadable(addr + size) && /* bounds are valid */
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!(addr >= 0x40010000u && addr < 0x40040000u && addr + size >= 0x40040000u) /* the range doesn't cross MMIO */
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;
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}
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bool overlaps(uint64_t as, uint64_t ae, uint64_t bs, uint64_t be);
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static inline bool overlaps_a(const void *as, const void *ae, const void *bs, const void *be) {
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return overlaps((uint64_t)(uintptr_t)as, (uint64_t)(uintptr_t)ae, (uint64_t)(uintptr_t)bs, (uint64_t)(uintptr_t)be);
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}
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static inline bool check_32bit_address_range_in_program(uintptr_t addr, size_t size) {
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extern uint8_t __chainloader_start__[], __chainloader_end__[];
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extern uint8_t __stack_bottom__[], __stack_top__[];
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extern uint8_t __start__[], __end__[];
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uint8_t *start = (uint8_t *)addr, *end = start + size;
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return overlaps_a(start, end, __chainloader_start__, __chainloader_end__) ||
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overlaps_a(start, end, __stack_bottom__, __stack_top__) ||
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overlaps_a(start, end, (void *)0xC0000000, (void *)0xC03C0000) || /* framebuffer */
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overlaps_a(start, end, __start__, __end__);
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}
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void hexdump(const void* data, size_t size, uintptr_t addrbase);
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__attribute__((noreturn)) void watchdog_reboot(void);
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__attribute__((noreturn)) void pmc_reboot(uint32_t scratch0);
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__attribute__((noreturn)) void reboot_to_self(void);
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__attribute__((noreturn)) void wait_for_button_and_reboot(void);
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__attribute__((noreturn)) void generic_panic(void);
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__attribute__((noreturn)) void fatal_error(const char *fmt, ...);
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#endif
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