feat: ported debug logging

yak-kernel/include/elf.h

@@ -0,0 +1,167 @@
+//
+// Created by rick on 07-03-21.
+//
+
+#ifndef NEW_KERNEL_ELF_H
+#define NEW_KERNEL_ELF_H
+
+#include <sys/types.h>
+
+// \x7FELF (little endian)
+#define ELF_MAGIC 0x464C457F
+
+#define ELF_CLASS_32 1
+#define ELF_CLASS_64 2
+
+#define ELF_ENDIAN_LITTLE 1
+#define ELF_ENDIAN_BIG 2
+
+#define SHT_NULL        0
+#define SHT_PROGBITS    1
+#define SHT_SYMTAB      2
+#define SHT_STRTAB      3
+#define SHT_RELA        4
+#define SHT_HASH        5
+#define SHT_DYNAMIC     6
+#define SHT_NOTE        7
+#define SHT_NOBITS      8
+#define SHT_REL         9
+#define SHT_SHLIB       10
+#define SHT_DYNSYM      11
+#define SHT_LOPROC      0x70000000
+#define SHT_HIPROC      0x7fffffff
+#define SHT_LOUSER      0x80000000
+#define SHT_HIUSER      0xffffffff
+
+#define SHF_WRITE       0x1
+#define SHF_ALLOC       0x2
+#define SHF_EXECINSTR   0x4
+#define SHF_MASKPROC    0xf0000000
+
+#define ELF32_ST_BIND(i)   ((i)>>4)
+#define ELF32_ST_TYPE(i)   ((i)&0xf)
+#define ELF32_ST_INFO(b, t) (((b)<<4)+((t)&0xf))
+
+#define STB_LOCAL   0
+#define STB_GLOBAL  1
+#define STB_WEAK    2
+#define STB_LOPROC  13
+#define STB_HIPROC  15
+
+#define STT_NOTYPE  0
+#define STT_OBJECT  1
+#define STT_FUNC    2
+#define STT_SECTION 3
+#define STT_FILE    4
+#define STT_LOPROC  13
+#define STT_HIPROC  15
+
+struct elf_file_header {
+    uint32_t ei_magic;
+    uint8_t ei_class;
+    uint8_t ei_data;
+    uint8_t ei_version;
+    uint8_t ei_osabi;
+    uint8_t ei_abiversion;
+    uint64_t: 56; // 7 bytes padding
+    union {
+        struct {
+            uint16_t e_type;
+            uint16_t e_machine;
+            uint32_t e_version;
+            uint32_t e_entry;
+            uint32_t e_phoff;
+            uint32_t e_shoff;
+            uint32_t e_flags;
+            uint16_t e_ehsize;
+            uint16_t e_phentsize;
+            uint16_t e_phnum;
+            uint16_t e_shentsize;
+            uint16_t e_shnum;
+            uint16_t e_shstrndx;
+        } elf32 __attribute((packed));
+        struct {
+            uint16_t e_type;
+            uint16_t e_machine;
+            uint32_t e_version;
+            uint64_t e_entry;
+            uint64_t e_phoff;
+            uint64_t e_shoff;
+            uint32_t e_flags;
+            uint16_t e_ehsize;
+            uint16_t e_phentsize;
+            uint16_t e_phnum;
+            uint16_t e_shentsize;
+            uint16_t e_shnum;
+            uint16_t e_shstrndx;
+        } elf64 __attribute((packed));
+    };
+} __attribute((packed));
+
+struct elf32_program_header {
+    uint32_t p_type;
+    uint32_t p_offset;
+    uint32_t p_vaddr;
+    uint32_t p_paddr;
+    uint32_t p_filesz;
+    uint32_t p_memsz;
+    uint32_t p_flags;
+    uint32_t p_align;
+} __attribute((packed));
+
+struct elf64_program_header {
+    uint32_t p_type;
+    uint32_t p_flags;
+    uint64_t p_offset;
+    uint64_t p_vaddr;
+    uint64_t p_paddr;
+    uint64_t p_filesz;
+    uint64_t p_memsz;
+    uint64_t p_align;
+} __attribute((packed));
+
+struct elf32_section_header {
+    uint32_t sh_name;
+    uint32_t sh_type;
+    uint32_t sh_flags;
+    uint32_t sh_addr;
+    uint32_t sh_offset;
+    uint32_t sh_size;
+    uint32_t sh_link;
+    uint32_t sh_info;
+    uint32_t sh_addr_align;
+    uint32_t sh_ent_size;
+}  __attribute((packed));
+
+struct elf64_section_header {
+    uint32_t sh_name;
+    uint32_t sh_type;
+    uint64_t sh_flags;
+    uint64_t sh_addr;
+    uint64_t sh_offset;
+    uint64_t sh_size;
+    uint32_t sh_link;
+    uint32_t sh_info;
+    uint64_t sh_addr_align;
+    uint64_t sh_ent_size;
+}  __attribute((packed));
+
+struct elf32_symtab_entry {
+    uint32_t st_name;
+    uint32_t st_value;
+    uint32_t st_size;
+    uint8_t st_info;
+    uint8_t st_other;
+    uint16_t st_shndx;
+} __attribute((packed));
+
+struct elf64_symtab_entry {
+    uint32_t st_name;
+    uint8_t st_info;
+    uint8_t st_other;
+    uint16_t st_shndx;
+    uint64_t st_value;
+    uint64_t st_size;
+} __attribute((packed));
+
+#endif //NEW_KERNEL_ELF_H

yak-kernel/include/yak/rt/debug/debug.h

@@ -0,0 +1,14 @@
+//
+// Created by rick on 08-03-21.
+//
+
+#ifndef NEW_KERNEL_DEBUG_H
+#define NEW_KERNEL_DEBUG_H
+
+#include <stdbool.h>
+
+void debug_store_info(void *kernel);
+
+void debug_backtrace(bool do_sync);
+
+#endif //NEW_KERNEL_DEBUG_H

yak-kernel/include/yak/rt/kprint.h

@@ -7,7 +7,9 @@
 
 typedef void (*print_function)(char c);
 
-void kprint_now(char* msg);
+void kprint(const char* msg);
+
+void kprint_now(const char* msg);
 
 void kprint_putc_now(char c);