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pmap: declare fault handler function and flags

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This commit is contained in:
max 🍓
2026-02-08 13:06:19 +00:00
parent 343689764f
commit 7eaad64969
1 changed files with 27 additions and 0 deletions
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27
include/mango/pmap.h
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@@ -18,6 +18,29 @@ extern "C" {
typedef ml_pmap_t pmap_t; typedef ml_pmap_t pmap_t;
typedef ml_pfn_t pfn_t; typedef ml_pfn_t pfn_t;
enum pmap_fault_flags {
/* if set, the faulting page is present, and the fault is
* protection-related.
* if clear, the faulting page is missing, and the
* fault is due to the missing page.
*/
PMAP_FAULT_PRESENT = 0x01u,
/* if set, the faulting page was accessed from user mode.
* if clear, the faulting page was accessed from kernel mode.
*/
PMAP_FAULT_USER = 0x02u,
/* if set, the fault was caused by a write operation.
* if clear, the faulting page was caused by a read operation.
*/
PMAP_FAULT_WRITE = 0x04u,
/* if set, the fault was caused while fetching an instruction from the
* faulting page.
*/
PMAP_FAULT_IFETCH = 0x08u,
/* if set, the fault was caused by misconfigured page tables */
PMAP_FAULT_BADCFG = 0x10u,
};
enum pmap_flags { enum pmap_flags {
PMAP_NORMAL = 0x00u, PMAP_NORMAL = 0x00u,
PMAP_HUGEPAGE = 0x01u, PMAP_HUGEPAGE = 0x01u,
@@ -30,6 +53,10 @@ extern pmap_t pmap_create(void);
extern void pmap_destroy(pmap_t pmap); extern void pmap_destroy(pmap_t pmap);
extern void pmap_switch(pmap_t pmap); extern void pmap_switch(pmap_t pmap);
extern kern_status_t pmap_handle_fault(
virt_addr_t fault_addr,
enum pmap_fault_flags flags);
extern kern_status_t pmap_add( extern kern_status_t pmap_add(
pmap_t pmap, pmap_t pmap,
virt_addr_t p, virt_addr_t p,