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gettid syscall, fix issues with vmm and mmap syscall

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Matheus
2022-08-18 22:12:51 -03:00
parent da99da2b36
commit 4de0ff2556
9 changed files with 50 additions and 10 deletions
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src/sys/mm/vmm.c
+26 -4
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@@ -395,14 +395,16 @@ void* vmm_allocfrom(void* addr, size_t mmuflags, size_t pagec){
spinlock_acquire(lock);
addr = findfirstfreearea(findmappingfromaddr(*start, addr), pagec);
vmm_mapping* map = findmappingfromaddr(*start, addr);
addr = findfirstfreearea(map, pagec);
if(!addr)
goto _done;
if(!setmap(start, addr, pagec, mmuflags, VMM_TYPE_ANON, 0, 0))
addr = NULL;
_done:
spinlock_release(lock);
@@ -514,8 +516,11 @@ bool vmm_allocnowat(void* addr, size_t mmuflags, size_t size){
// called by the page fault handler
bool vmm_dealwithrequest(void* addr){
bool vmm_dealwithrequest(void* addr, long error, bool user){
if(user && addr > USER_SPACE_END)
return false;
int* lock;
vmm_mapping** start = NULL;
@@ -533,10 +538,27 @@ bool vmm_dealwithrequest(void* addr){
status = false;
goto done;
}
if(map->type == VMM_TYPE_FILE)
_panic("File mappings are not supported (yet)", 0);
size_t goodmmuflags = 1;
if(error & ARCH_MMU_ERROR_WRITE)
goodmmuflags |= ARCH_MMU_MAP_WRITE;
if(error & ARCH_MMU_ERROR_USER)
goodmmuflags |= ARCH_MMU_MAP_USER;
if(error & ARCH_MMU_ERROR_INSTFETCH == 0)
goodmmuflags |= ARCH_MMU_MAP_NOEXEC;
if(goodmmuflags != (map->mmuflags & goodmmuflags))
return false;
// allocate a page
addr = (size_t)addr & ~(0xFFF);