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PMM -- Convert between virtual and physical address

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This commit is contained in:
Thomas Lovén 2017-12-21 16:17:55 +01:00
parent 1daf8ed47b
commit 82fbafc38e
2 changed files with 7 additions and 0 deletions
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2
src/kernel/memory/pmm.c
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@ -4,6 +4,7 @@ uintptr_t *first = 0;
void pmm_free(void *c)
{
c = (uintptr_t *)P2V(c);
*(uintptr_t *)c = (uintptr_t)first;
first = c;
}
@ -12,5 +13,6 @@ void *pmm_alloc()
{
void *c = first;
first = (uintptr_t *)(c?*(uintptr_t *)c:0);
c = (uintptr_t *)V2P(c);
return c;
}

5
src/kernel/memory/pmm.tt
View File

@ -1,6 +1,11 @@
// vim: ft=c
#include <ttest.h>
#include <memory.h>
#undef P2V
#define P2V(addr) (void *)((uintptr_t)(addr))
#undef V2P
#define V2P(addr) (void *)((uintptr_t)(addr))
#include "pmm.c"
struct {