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- #include <grub/memory.h>
- #include <grub/mm.h>
- #include <grub/misc.h>
- GRUB_EXPORT(grub_mmap_get_lower);
- GRUB_EXPORT(grub_mmap_get_upper);
- static int
- grub_mmap_get_lower_hook (grub_uint64_t addr, grub_uint64_t size,
- grub_uint32_t type, void *closure)
- {
- grub_uint64_t *lower = closure;
- if (type != GRUB_MACHINE_MEMORY_AVAILABLE)
- return 0;
- if (addr == 0)
- *lower = size;
- return 0;
- }
- grub_uint64_t
- grub_mmap_get_lower (void)
- {
- grub_uint64_t lower = 0;
- grub_mmap_iterate (grub_mmap_get_lower_hook, &lower);
- if (lower > 0x100000)
- lower = 0x100000;
- return lower;
- }
- static int
- grub_mmap_get_upper_hook (grub_uint64_t addr, grub_uint64_t size,
- grub_uint32_t type, void *closure)
- {
- grub_uint64_t *upper = closure;
- if (type != GRUB_MACHINE_MEMORY_AVAILABLE)
- return 0;
- if (addr <= 0x100000 && addr + size > 0x100000)
- *upper = addr + size - 0x100000;
- return 0;
- }
- grub_uint64_t
- grub_mmap_get_upper (void)
- {
- grub_uint64_t upper = 0;
- grub_mmap_iterate (grub_mmap_get_upper_hook, &upper);
- return upper;
- }
- static int
- grub_mmap_get_post64_hook (grub_uint64_t addr, grub_uint64_t size,
- grub_uint32_t type, void *closure)
- {
- grub_uint64_t *post64 = closure;
- if (type != GRUB_MACHINE_MEMORY_AVAILABLE)
- return 0;
- if (addr <= 0x4000000 && addr + size > 0x4000000)
- *post64 = addr + size - 0x4000000;
- return 0;
- }
- grub_uint64_t
- grub_mmap_get_post64 (void)
- {
- grub_uint64_t post64 = 0;
- grub_mmap_iterate (grub_mmap_get_post64_hook, &post64);
- return post64;
- }
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