feat: add initial impl of efi-stub and kernel

2026-01-28 16:01:38 +08:00
commit 1233ae9e9b
21 changed files with 845 additions and 0 deletions
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -0,0 +1,86 @@
+#include "format/pe.h"
+#include "offset.h"
+    .set salign, 0x1000
+    .set falign, 0x200
+    .section ".bstext", "ax" // allocatable, executable
+    .word IMAGE_DOS_SIGNATURE
+    .org 0x3c
+    .long pe_header
+    .global pe_header
+pe_header:
+    .long IMAGE_NT_SIGNATURE
+coff_header:
+    .word IMAGE_FILE_MACHINE_AMD64
+    .word section_count
+    .long 0                      /* TimeDateStamp */
+    .long 0                      /* PointerToSymbolTable */
+    .long 0                      /* NumberOfSymbols */
+    .word section_table - optional_header /* SizeOfOptionalHeader */
+    .word IMAGE_FILE_EXECUTABLE_IMAGE | IMAGE_FILE_DEBUG_STRIPPED | IMAGE_FILE_LINE_NUMS_STRIPPED /* Characteristics */
+optional_header:
+    .word IMAGE_NT_OPTIONAL_HDR64_MAGIC /* Magic */
+    .byte 0                        /* MajorLinkerVersion */
+    .byte 0                        /* MinorLinkerVersion */
+    .long CAP__data               /* SizeOfCode */
+    .long CAP__end - CAP__data   /* SizeOfInitializedData */
+    .long 0                        /* SizeOfUninitializedData */
+    .long setup_size + efi_pe_entry   /* AddressOfEntryPoint */
+    .long setup_size               /* BaseOfCode */
+extra_header_fields:
+    .quad 0                        /* ImageBase */
+    .long salign                   /* SectionAlignment */
+    .long falign                   /* FileAlignment */
+    .word 0                        /* MajorOperatingSystemVersion */
+    .word 0                        /* MinorOperatingSystemVersion */
+    .word 0                        /* MajorImageVersion */
+    .word 0                        /* MinorImageVersion */
+    .word 0                        /* MajorSubsystemVersion */
+    .word 0                        /* MinorSubsystemVersion */
+    .long 0                        /* Win32VersionValue */
+
+    .long setup_size + CAP__end       /* SizeOfImage */
+
+    .long salign                   /* SizeOfHeaders */
+    .long 0                        /* CheckSum */
+    .word IMAGE_SUBSYSTEM_EFI_APPLICATION /* Subsystem */
+    .word IMAGE_DLLCHARACTERISTICS_NX_COMPAT /* DllCharacteristics */
+    .quad 0                        /* SizeOfStackReserve */
+    .quad 0                        /* SizeOfStackCommit */
+    .quad 0                        /* SizeOfHeapReserve */
+    .quad 0                        /* SizeOfHeapCommit */
+    .long 0                        /* LoaderFlags */
+    .long (section_table - .) / 8  /* NumberOfRvaAndSizes */
+    .quad 0
+    .quad 0
+    .quad 0
+    .quad 0
+    .quad 0
+    .quad 0
+
+section_table:
+    # .ascii ".setup\0\0"
+    # .long setup_size - salign  /* VirtualSize */
+    # .long salign               /* VirtualAddress */
+    # .long setup_size - salign  /* SizeOfRawData */
+    # .long salign               /* PointerToRawData */
+    # .long 0,0,0
+    # .long IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_DISCARDABLE
+
+    .ascii ".text\0\0\0"
+    .long text_size            /* VirtualSize */
+    .long setup_size           /* VirtualAddress */
+    .long text_size            /* SizeOfRawData */
+    .long setup_size           /* PointerToRawData */
+    .long 0,0,0
+    .long IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_EXECUTE
+
+    .ascii ".data\0\0\0"
+    .long CAP__end - CAP__data     /* VirtualSize */
+    .long setup_size + CAP__data    /* VirtualAddress */
+    .long CAP__edata - CAP__data /* SizeOfRawData */
+    .long setup_size + CAP__data    /* PointerToRawData */
+    .long 0,0,0
+    .long IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_WRITE
+    
+    .set text_size, CAP__data
+    .set section_count, (. - section_table) / 40