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Code Issues Releases Wiki Activity

将内核层空间移动到0xffff800000000000

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This commit is contained in:
fslongjin
2022-04-09 21:11:07 +08:00
parent 24b351c9ec
commit 05dc7ac73b
14 changed files with 321 additions and 175 deletions
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14
kernel/driver/multiboot2/multiboot2.c
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@ -3,18 +3,18 @@
#include "../../common/glib.h"
#include "../../common/kprint.h"
uintptr_t boot_info_addr;
uintptr_t multiboot2_boot_info_addr;
unsigned int multiboot2_magic;
unsigned int boot_info_size;
unsigned int multiboot2_boot_info_size;
bool multiboot2_init(void)
{
uintptr_t *addr = (uintptr_t *)boot_info_addr;
uintptr_t *addr = (uintptr_t *)multiboot2_boot_info_addr;
if (multiboot2_magic != MULTIBOOT2_BOOTLOADER_MAGIC)
;
return false;
// addr+0 处保存了大小
boot_info_size = *(unsigned int *)addr;
multiboot2_boot_info_size = *(unsigned int *)addr;
return true;
}
@ -22,9 +22,9 @@ void multiboot2_iter(bool (*_fun)(const struct iter_data_t *, void *, unsigned i
void *data, unsigned int *count)
{
uintptr_t addr = boot_info_addr;
// 下一字节开始为 tag 信息
struct iter_data_t *tag = (struct iter_data_t *)(addr + 8);
uintptr_t addr = multiboot2_boot_info_addr;
// 接下来的第8字节开始，为 tag 信息
struct iter_data_t *tag = (struct iter_data_t *)((void*)addr + 8);
for (; tag->type != MULTIBOOT_TAG_TYPE_END;
tag = (struct iter_data_t *)((uint8_t *)tag + ALIGN(tag->size, 8)))
{