22 lines
735 B
C
22 lines
735 B
C
#include "paging.h"
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void address_spaces_copy_data(void* cr3, void* data,uint32_t size,void* virt_addr) {
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uint32_t old_cr3;
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asm volatile("movl %%cr3, %%eax; movl %%eax, %0;":"=m"(old_cr3)::"%eax");
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void* phys_addr=virt_to_phys(data);
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load_smap((uint32_t)cr3);
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map_pages(virt_addr,phys_addr,(size/4096)+1,1,1);
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load_smap(old_cr3);
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}
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void* address_spaces_put_data(void* cr3, void* data,uint32_t size) {
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uint32_t old_cr3;
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asm volatile("movl %%cr3, %%eax; movl %%eax, %0;":"=m"(old_cr3)::"%eax");
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void* phys_addr=virt_to_phys(data);
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load_smap((uint32_t)cr3);
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void* virt_addr=(void*)(find_free_pages((size/4096)+1)<<12);
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map_pages(virt_addr,phys_addr,(size/4096)+1,1,1);
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load_smap(old_cr3);
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return virt_addr;
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}
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