diff options
Diffstat (limited to 'src/boot/trampoline.cc')
| -rw-r--r-- | src/boot/trampoline.cc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/boot/trampoline.cc b/src/boot/trampoline.cc index b03bd43..a75b472 100644 --- a/src/boot/trampoline.cc +++ b/src/boot/trampoline.cc @@ -10,6 +10,10 @@ /// @brief Define where first PAE paging paging will be u64 trampoline_next_page; +/// @brief Ensure +#define MAX_MB_INFOS 4096 +u8 mb_infos[MAX_MB_INFOS]; + u64 trampoline_paging_allocate_table(){ for(u64 i=0;i<512;i++) ((u64*)trampoline_next_page)[i]=0; @@ -63,7 +67,12 @@ void trampoline_paging_allocate_addr(u64* pml4_table, u64 virt, u64 phy, u16 opt /** * Setup High-Half Kernel Paging */ -extern "C" void trampoline(){ +extern "C" u8* trampoline(u8* mb_infos_addr){ + // Save mb infos before anything else + for(int i=0;i<MAX_MB_INFOS;i++){ + mb_infos[i]=mb_infos_addr[i]; + } + u64 kernel_vma,stack_pma; asm("movq $__kernel_vma, %0":"=r"(kernel_vma)); asm("movq $__userspace_pma, %0":"=r"(trampoline_next_page)); @@ -91,4 +100,6 @@ extern "C" void trampoline(){ "movq %0, %%rax \n\t" "movq %%rax, %%cr3 \n\t" :: "r" (pml4)); + + return mb_infos; }
\ No newline at end of file |