arch/x64/kernel/vmnyan.LD

   1 #include <nyan/kconfig.h>
   2
   3 #include <arch/ptbls_types.h>
   4 #include <arch/mm.h>
   5
   6 OUTPUT_FORMAT(binary);
   7 OUTPUT_ARCH(i386:x86-64);
   8 SECTIONS {
   9         . = 0;
  10         ld_img_start = .;
  11         .init_va_jmp_code : {
  12                 */arch/x64/kernel/head.cpp.s.o(.head_text_va_jmp_code)
  13         }
  14         .init : {
  15                 */arch/x64/kernel/head.cpp.s.o(.head_text)
  16                 INCLUDE arch/x64/kernel/init/vmnyan.ld.script.part;
  17         }
  18         . = ALIGN(1 << 21); // 2MiB
  19         .kernel : {
  20                 INCLUDE arch/x64/kernel/vmnyan.ld.script.part;
  21         }
  22         . = ALIGN(1 << 21); // 2MiB
  23         ld_img_end = .;
  24         ld_img_bytes_n = . - ld_img_start;
  25         ld_img_p2mibs_n = (ld_img_end - ld_img_start) / (1 << 21);
  26         ld_img_p2mibs_n_sz = ld_img_p2mibs_n * (1 << PTS_ENTRY_BYTES_N_LOG2); // byte count of 2MiB entries
  27         /* some absolute kernel virtual addresses for initialization, the kernel start virtual
  28            address is computed from its page table entries */
  29         ld_free_pages_list_va = ABSOLUTE((CANONICAL_HI_VA_MSK \
  30                                         | (CONFIG_KERNEL_PT256TIB_512GIBENT_HI_IDX * (1 << 39) \
  31                                         + CONFIG_KERNEL_PT512GIB_1GIBENT_IDX * (1 << 30))) \
  32                                                                 + free_pages_list - startup);
  33 };
  34 ASSERT(SIZEOF(.init_va_jmp_code) <= (1 << 21), "ERROR: the code for the jump into our kernel virtual address space does not fit into the first 2MiB page of the kernel image");