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https://git.stationery.faith/corn/corn.git
synced 2024-11-24 09:12:18 +00:00
follow the corn style guide
This commit is contained in:
trimill
parent
ef384ad9a7
commit
b5b904cfc9
21 changed files with 166 additions and 203 deletions
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@ -110,7 +110,7 @@ long long int atoll(const char* s);
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/**
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* Converts a integer to asci inside a string with a given radix (base).
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* @param n - the number to conver
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* @param n - the number to convert
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* @param buffer - the string buffer
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* @param radix - the base to convert
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*/
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@ -118,7 +118,7 @@ char *itoa(int n, char *buffer, int radix);
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/**
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* Converts a long to asci inside a string with a given radix (base).
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* @param n - the number to conver
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* @param n - the number to convert
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* @param buffer - the string buffer
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* @param radix - the base to convert
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*/
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@ -134,7 +134,7 @@ char *lltoa(long long int n, char *buffer, int radix);
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/**
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* Converts a unsigned integer to asci inside a string with a given radix (base).
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* @param n - the number to conver
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* @param n - the number to convert
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* @param buffer - the string buffer
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* @param radix - the base to convert
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*/
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@ -142,7 +142,7 @@ char *utoa(unsigned int n, char *buffer, int radix);
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/**
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* Converts a unsigned long to asci inside a string with a given radix (base).
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* @param n - the number to conver
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* @param n - the number to convert
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* @param buffer - the string buffer
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* @param radix - the base to convert
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*/
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@ -7,46 +7,46 @@
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/**
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* Initalize system memory allocator
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*/
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extern void memory_init(struct memory_map *map);
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void memory_init(struct memory_map *map);
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/**
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* Disabled cpu interupts to not interfere with
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* current memory allocations.
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*/
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extern void memory_lock(void);
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void memory_lock(void);
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/**
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* Reenabled cpu interupts
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*/
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extern void memory_unlock(void);
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void memory_unlock(void);
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/**
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* @returns how much memory the system has
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*/
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extern uint64_t memory_total(void);
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uint64_t memory_total(void);
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/**
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* @returns how much memory is free
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*/
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extern uint64_t memory_free(void);
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uint64_t memory_free(void);
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/**
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* @returns how much memory is used
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*/
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extern uint64_t memory_used(void);
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uint64_t memory_used(void);
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/**
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* Allocates a single page in memory.
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* @returns the page if allocated or NULL on failure
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*/
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extern void *alloc_page(void);
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void *alloc_page(void);
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/**
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* Allocats count pages in memory
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* @param count - the number of continious pages to allocate
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* @returns the pages if allocated or NULL on failure
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*/
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extern void *alloc_pages(int count);
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void *alloc_pages(int count);
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/**
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* Frees a signle page in memory.
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@ -54,7 +54,7 @@ extern void *alloc_pages(int count);
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* Freeing in the middle of a block is allowed.
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* @param page - the pointer to the page
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*/
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extern void free_page(void *page);
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void free_page(void *page);
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// TODO: implement free_page
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/**
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@ -64,7 +64,7 @@ extern void free_page(void *page);
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* free_pages will from *page to end of block allocated.
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* @param page - the pointer to the page
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*/
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extern void free_pages(void *page);
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void free_pages(void *page);
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// TODO: implement freeing in middle of block
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/**
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@ -76,21 +76,21 @@ extern void free_pages(void *page);
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* @param writable - if this memory should be writable
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* @param user - if this memory should be user writable
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*/
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extern void *mmap(void *addr, size_t len);
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void *mmap(void *addr, size_t len);
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/**
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* Unmaps mapped address from the mmap function
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* @param addr - the address returned from mmap
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* @param len - the length allocated
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*/
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extern void unmap(void *addr);
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void unmap(void *addr);
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/**
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* Allocates size_t bytes in memory
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* @param size - the amount of bytes to allocate
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* @retruns the address allocated or NULL on failure
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*/
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extern void *kalloc(size_t size);
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void *kalloc(size_t size);
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/**
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* Reallocates a given allocated ptr to a new size of bytes in memory.
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@ -99,10 +99,10 @@ extern void *kalloc(size_t size);
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* @param size - the amount of bytes to set the pointer to
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* @returns the address allocated or NULL on failure
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*/
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extern void *krealloc(void *ptr, size_t size);
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void *krealloc(void *ptr, size_t size);
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/**
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* Frees a allocated pointer in memory
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* @param ptr - the pointer to free
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*/
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extern void kfree(void *ptr);
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void kfree(void *ptr);
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@ -8,23 +8,23 @@
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* Allocates a single physical page in memory
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* @preturns the physical address of the page
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*/
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extern void *alloc_phys_page(void);
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void *alloc_phys_page(void);
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/**
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* Allocates count physical pages in memory
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* @returns the physical address of the first page
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*/
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extern void *alloc_phys_pages(int count);
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void *alloc_phys_pages(int count);
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/**
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* Frees a single physical page in memory
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* @param ptr - the physical address of the page
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*/
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extern void free_phys_page(void *ptr);
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void free_phys_page(void *ptr);
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/**
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* Frees count physical pages in memory
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* @param ptr - the physical address of the first page
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* @param count - the number of pages in the list
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*/
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extern void free_phys_pages(void *ptr, int count);
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void free_phys_pages(void *ptr, int count);
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@ -13,81 +13,73 @@
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#define MBOOT_OLD_RSDP 14
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#define MBOOT_NEW_RSDP 15
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extern char symtab;
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#define kaddr(addr) ((uintptr_t)(&addr))
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typedef uint8_t mboot_uint8_t;
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typedef uint16_t mboot_uint16_t;
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typedef uint32_t mboot_uint32_t;
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typedef uint64_t mboot_uint64_t;
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struct mboot_info {
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mboot_uint32_t total_size;
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mboot_uint32_t reserved;
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uint32_t total_size;
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uint32_t reserved;
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char tags[];
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};
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struct mboot_tag {
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mboot_uint32_t type;
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mboot_uint32_t size;
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uint32_t type;
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uint32_t size;
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char data[];
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};
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struct mboot_tag_elf_sections {
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mboot_uint32_t type;
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mboot_uint32_t size;
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mboot_uint16_t num;
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mboot_uint16_t entsize;
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mboot_uint16_t shndx;
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mboot_uint16_t reserved;
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uint32_t type;
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uint32_t size;
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uint16_t num;
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uint16_t entsize;
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uint16_t shndx;
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uint16_t reserved;
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char sections[];
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};
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struct mboot_tag_elf_sections_entry {
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mboot_uint32_t sh_name;
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mboot_uint32_t sh_type;
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mboot_uint64_t sh_flags;
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mboot_uint64_t sh_addr;
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mboot_uint64_t sh_offset;
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mboot_uint64_t sh_size;
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mboot_uint32_t sh_link;
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mboot_uint32_t sh_info;
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mboot_uint64_t sh_addralign;
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mboot_uint64_t sh_entsize;
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uint32_t sh_name;
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uint32_t sh_type;
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uint64_t sh_flags;
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uint64_t sh_addr;
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uint64_t sh_offset;
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uint64_t sh_size;
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uint32_t sh_link;
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uint32_t sh_info;
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uint64_t sh_addralign;
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uint64_t sh_entsize;
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};
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struct mboot_mmap_entry {
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mboot_uint64_t addr;
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mboot_uint64_t len;
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mboot_uint32_t type;
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mboot_uint32_t zero;
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uint64_t addr;
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uint64_t len;
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uint32_t type;
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uint32_t zero;
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};
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struct mboot_tag_mmap {
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mboot_uint32_t type;
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mboot_uint32_t size;
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mboot_uint32_t entry_size;
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mboot_uint32_t entry_version;
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uint32_t type;
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uint32_t size;
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uint32_t entry_size;
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uint32_t entry_version;
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struct mboot_mmap_entry entries[];
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};
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struct mboot_tag_old_rsdp {
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mboot_uint32_t type;
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mboot_uint32_t size;
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mboot_uint8_t rsdp[];
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uint32_t type;
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uint32_t size;
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uint8_t rsdp[];
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};
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struct mboot_tag_new_rsdp {
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mboot_uint32_t type;
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mboot_uint32_t size;
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mboot_uint8_t rsdp[];
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uint32_t type;
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uint32_t size;
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uint8_t rsdp[];
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};
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struct mboot_tag_cmdline {
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mboot_uint32_t type;
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mboot_uint32_t size;
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mboot_uint8_t cmdline[];
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uint32_t type;
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uint32_t size;
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uint8_t cmdline[];
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};
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static void read_symbols(
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@ -100,7 +92,7 @@ static void read_symbols(
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// struct mboot_elf_section_header *section =
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// (struct mboot_elf_section_header *) (layout->elf_section_headers);
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//
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// for (mboot_uint32_t i = 0; i < layout->num; i++) {
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// for (uint32_t i = 0; i < layout->num; i++) {
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// char buf[20];
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//
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// ultoa(i, buf, 10);
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@ -134,7 +126,7 @@ static void read_cmdline(
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struct boot_info *shim_info,
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struct mboot_tag_cmdline *cmdline
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) {
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mboot_uint32_t size = cmdline->size - 8;
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uint32_t size = cmdline->size - 8;
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if (size >= CMDLINE_MAX)
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size = CMDLINE_MAX; // truncate :(
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memcpy(shim_info->cmdline, cmdline->cmdline, size);
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@ -68,25 +68,18 @@ static struct pdpte *pdpt_mapped = (void *) (uintptr_t) 0x201000;
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static struct pde *pd_mapped = (void *) (uintptr_t) 0x202000;
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static struct pte *pt_mapped = (void *) (uintptr_t) 0x203000;
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static inline void
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invlpg(void *addr)
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{
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static inline void invlpg(void *addr) {
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__asm volatile("invlpg (%0)" ::"r" (addr) : "memory");
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}
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static void
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load_addr(void *phys_addr)
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{
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static void load_addr(void *phys_addr) {
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static struct pte *pt = &paging_pt[4];
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pt->address = (uint64_t)phys_addr >> 12;
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pt->flags = F_PRESENT | F_WRITEABLE;
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invlpg(addr_mapped);
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}
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static void
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load_pml4(
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void *phys
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) {
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static void load_pml4(void *phys) {
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static struct pte *pt = &paging_pt[0];
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if ((uint64_t)phys >> 12 == pt->address)
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return;
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@ -95,10 +88,7 @@ load_pml4(
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invlpg(pml4_mapped);
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}
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static void
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load_pdpt(
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void *phys
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) {
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static void load_pdpt(void *phys) {
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static struct pte *pt = &paging_pt[1];
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if ((uint64_t)phys >> 12 == pt->address)
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return;
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@ -107,10 +97,7 @@ load_pdpt(
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invlpg(pdpt_mapped);
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}
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static void
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load_pd(
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void *phys
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) {
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static void load_pd(void *phys) {
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static struct pte *pt = &paging_pt[2];
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if ((uint64_t)phys >> 12 == pt->address)
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return;
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@ -119,10 +106,7 @@ load_pd(
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invlpg(pdpt_mapped);
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}
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static void
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load_pt(
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void *phys
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) {
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static void load_pt(void *phys) {
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static struct pte *pt = &paging_pt[3];
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if ((uint64_t)phys >> 12 == pt->address)
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return;
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@ -135,8 +119,7 @@ load_pt(
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#define PAG_CANNOT_ALLOC 1
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#define PAG_NOT_PRESENT 2
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static int
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select_pdpt(
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static int select_pdpt(
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void *virt,
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unsigned int flags,
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struct pml4e *root,
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@ -165,8 +148,7 @@ select_pdpt(
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return PAG_SUCCESS;
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}
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static int
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select_pd(
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static int select_pd(
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void *virt,
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unsigned int flags,
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struct pdpte *pdpt,
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@ -195,8 +177,7 @@ select_pd(
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return PAG_SUCCESS;
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}
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static int
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select_pt(
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static int select_pt(
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void *virt,
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unsigned int flags,
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struct pde *pd,
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@ -225,8 +206,7 @@ select_pt(
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return PAG_SUCCESS;
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}
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static void
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select_page(
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static void select_page(
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void *virt,
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struct pte *pt,
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struct pte **res
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@ -238,8 +218,7 @@ select_page(
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return;
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}
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static inline void
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try_unmap_pml4(void) {
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static inline void try_unmap_pml4(void) {
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for (int i = 0; i < 512; i++) {
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if (pml4_mapped[i].flags & F_PRESENT)
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return;
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@ -252,8 +231,7 @@ try_unmap_pml4(void) {
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}
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}
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static inline void
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try_unmap_pdpt(void) {
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static inline void try_unmap_pdpt(void) {
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for (int i = 0; i < 512; i++) {
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if (pdpt_mapped[i].flags & F_PRESENT)
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return;
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@ -267,8 +245,7 @@ try_unmap_pdpt(void) {
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try_unmap_pml4();
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}
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static inline void
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try_unmap_pd(void) {
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static inline void try_unmap_pd(void) {
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for (int i = 0; i < 512; i++) {
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if (pd_mapped[i].flags & F_PRESENT)
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return;
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@ -282,8 +259,7 @@ try_unmap_pd(void) {
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try_unmap_pdpt();
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}
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static inline void
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try_unmap_pt(void) {
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static inline void try_unmap_pt(void) {
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for (int i = 0; i < 512; i++) {
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if (pt_mapped[i].flags & F_PRESENT)
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return;
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@ -297,12 +273,10 @@ try_unmap_pt(void) {
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try_unmap_pd();
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}
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static void
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unmap_page(
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static void unmap_page(
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struct pml4e *root,
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void *virt
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) {
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struct pdpte *pdpt;
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struct pde *pd;
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struct pte *pt;
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@ -331,13 +305,11 @@ unmap_page(
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return;
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}
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static void
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unmap_pages(
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static void unmap_pages(
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struct pml4e *root,
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void *virt_start,
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long page_count
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) {
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uint64_t pml4_o = -1,
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pdpt_o = -1,
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pd_o = -1;
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|
|
@ -397,14 +369,12 @@ unmap_pages(
|
|||
return;
|
||||
}
|
||||
|
||||
static int
|
||||
map_page(
|
||||
static int map_page(
|
||||
struct pml4e *root,
|
||||
void *virt,
|
||||
void *phys,
|
||||
unsigned int flags
|
||||
) {
|
||||
|
||||
struct pdpte *pdpt;
|
||||
struct pde *pd;
|
||||
struct pte *pt;
|
||||
|
|
@ -430,15 +400,13 @@ map_page(
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
map_pages(
|
||||
static int map_pages(
|
||||
struct pml4e *root,
|
||||
void *virt_start,
|
||||
void *phys_start,
|
||||
unsigned int flags,
|
||||
long page_count
|
||||
) {
|
||||
|
||||
uint64_t pml4_o = -1,
|
||||
pdpt_o = -1,
|
||||
pd_o = -1;
|
||||
|
|
@ -502,7 +470,6 @@ failed:
|
|||
}
|
||||
|
||||
void paging_init(void) {
|
||||
|
||||
kernel_pml4[0].flags = F_PRESENT | F_WRITEABLE;
|
||||
kernel_pml4[0].address = (uint64_t)(&kernel_pdpt_0) >> 12;
|
||||
|
||||
|
|
|
|||
14
src/lib.c
14
src/lib.c
|
|
@ -45,13 +45,15 @@ int strncmp(const char *restrict lhs, const char *restrict rhs, unsigned long n)
|
|||
}
|
||||
|
||||
char *strcpy(char *restrict dest, const char *restrict src) {
|
||||
for(; (*dest = *src); dest++, src++);
|
||||
char *d = dest;
|
||||
for (; (*d = *src); d++, src++);
|
||||
return dest;
|
||||
}
|
||||
|
||||
char *strncpy(char *restrict dest, const char *restrict src, unsigned long n) {
|
||||
for(; (*dest = *src) && n; dest++, src++, n--);
|
||||
memset(dest, 0, n);
|
||||
char *d = dest;
|
||||
for (; (*d = *src) && n; d++, src++, n--);
|
||||
memset(d, 0, n);
|
||||
return dest;
|
||||
}
|
||||
|
||||
|
|
@ -216,13 +218,14 @@ end:
|
|||
for (; n; n /= radix) { \
|
||||
*buffer++ = itoc(n % radix); \
|
||||
} \
|
||||
char *buf_end = buffer; \
|
||||
*buffer-- = '\0'; \
|
||||
while (buffer > start) { \
|
||||
char tmp = *start; \
|
||||
*start++ = *buffer; \
|
||||
*buffer-- = tmp; \
|
||||
} \
|
||||
return buffer; \
|
||||
return buf_end; \
|
||||
}
|
||||
|
||||
UXTOA(int, utoa)
|
||||
|
|
@ -244,13 +247,14 @@ UXTOA(long long int, ulltoa)
|
|||
for (; n; n /= radix) { \
|
||||
*buffer++ = itoc(n % radix); \
|
||||
} \
|
||||
char *buf_end = buffer; \
|
||||
*buffer-- = '\0'; \
|
||||
while (buffer > start) { \
|
||||
char tmp = *start; \
|
||||
*start++ = *buffer; \
|
||||
*buffer-- = tmp; \
|
||||
} \
|
||||
return buffer; \
|
||||
return buf_end; \
|
||||
}
|
||||
|
||||
XTOA(int, itoa)
|
||||
|
|
|
|||
Loading…
Reference in a new issue