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This commit is contained in:
Kamil Kowalczyk
2025-09-15 22:35:15 +02:00
parent ce63020b34
commit 0a5523f234
22 changed files with 374 additions and 177 deletions
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20
kernel/syscall/mman.c
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@ -18,7 +18,7 @@ int32_t SYSCALL5(sys_mman_map, addr1, size1, prot1, flags1, out1) {
uint64_t flags = flags1;
uint8_t **out = (uint8_t **)out1;
if (size % HAL_PAGE_SIZE != 0) {
if (size == 0 || (size % HAL_PAGE_SIZE != 0)) {
if (out != NULL) {
*out = NULL;
}
@ -37,11 +37,19 @@ int32_t SYSCALL5(sys_mman_map, addr1, size1, prot1, flags1, out1) {
spinlock_release(&PROCS.spinlock);
uint8_t *virt = NULL;
if (flags & MMAN_MAP_F_FIXED && addr != NULL) {
if ((flags & MMAN_MAP_F_FIXED) && addr != NULL) {
if ((uintptr_t)addr % HAL_PAGE_SIZE != 0) {
if (out != NULL) {
*out = NULL;
}
pmm_free((uintptr_t)phys, pages);
return E_INVALIDARGUMENT;
}
virt = addr;
} else {
virt = (uint8_t *)proc->mman_map_base;
proc->mman_map_base += size;
proc->mman_map_base += pages * HAL_PAGE_SIZE;
}
uint64_t pflags = HAL_PG_USER | HAL_PG_PRESENT;
@ -49,11 +57,11 @@ int32_t SYSCALL5(sys_mman_map, addr1, size1, prot1, flags1, out1) {
pflags |= HAL_PG_RW;
}
hal_vmm_map_range(VIRT(proc->platformdata.cr3), virt, phys, size, pflags);
hal_vmm_map_range(proc->platformdata.cr3, virt, phys, pages * HAL_PAGE_SIZE, pflags);
VasRange *range = dlmalloc(sizeof(*range));
range->virtstart = virt;
range->physstart = phys;
range->size = size * HAL_PAGE_SIZE;
range->size = pages * HAL_PAGE_SIZE;
range->pgflags = pflags;
LL_APPEND(proc->vas, range);
@ -91,7 +99,7 @@ int32_t SYSCALL1(sys_mman_unmap, addr1) {
return E_INVALIDARGUMENT;
}
hal_vmm_unmap_range(VIRT(proc->platformdata.cr3), tofree->virtstart, tofree->physstart, tofree->size);
hal_vmm_unmap_range(proc->platformdata.cr3, tofree->virtstart, tofree->physstart, tofree->size);
LL_REMOVE(proc->vas, tofree);
pmm_free((uintptr_t)tofree->physstart, tofree->size / HAL_PAGE_SIZE);
dlfree(tofree);