mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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127 lines
4.1 KiB
C
127 lines
4.1 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 EXOSPHERE_UTILS_H
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#define EXOSPHERE_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 "panic_color.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 SET_SYSREG(reg, val) do { temp_reg = (val); __asm__ __volatile__ ("msr " #reg ", %0" :: "r"(temp_reg) : "memory"); } while(false)
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/* Custom stuff below */
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/* For coldboot */
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typedef struct {
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uint8_t *vma;
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uint8_t *end_vma;
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uintptr_t lma;
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} coldboot_crt0_reloc_t;
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typedef struct {
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uintptr_t reloc_base;
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size_t loaded_bin_size;
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size_t nb_relocs_pre_mmu_init; /* first is always warmboot_crt0 */
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size_t nb_relocs_post_mmu_init; /* first is always main segment excl. .bss */
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coldboot_crt0_reloc_t relocs[];
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} coldboot_crt0_reloc_list_t;
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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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uintptr_t get_iram_address_for_debug(void);
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static inline uintptr_t get_physical_address(const void *vaddr) {
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uintptr_t PAR;
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__asm__ __volatile__ ("at s1e3r, %0" :: "r"(vaddr));
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__asm__ __volatile__ ("mrs %0, par_el1" : "=r"(PAR));
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return (PAR & 1) ? 0ull : (PAR & MASK2L(40, 12)) | ((uintptr_t)vaddr & MASKL(12));
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}
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static inline uint32_t read32le(const volatile 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 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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return *(uint64_t *)((uintptr_t)qword + offset);
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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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*(uint32_t *)((uintptr_t)dword + offset) = 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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*(uint64_t *)((uintptr_t)qword + offset) = 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 unsigned int get_core_id(void) {
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uint64_t core_id;
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__asm__ __volatile__ ("mrs %0, mpidr_el1" : "=r"(core_id));
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return (unsigned int)core_id & 3;
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}
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static inline uint64_t get_debug_authentication_status(void) {
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uint64_t debug_auth;
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__asm__ __volatile__ ("mrs %0, dbgauthstatus_el1" : "=r"(debug_auth));
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return debug_auth;
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}
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static inline uint32_t get_spsr(void) {
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uint32_t spsr;
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__asm__ __volatile__ ("mrs %0, spsr_el3" : "=r"(spsr));
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return spsr;
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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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#endif
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