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Spawn Processes using memory primitives rather than and elf loader.

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This allows us to remove the temporary syscall for that style of process
spawn.
This commit is contained in:
Drew Galbraith 2023-06-07 00:04:53 -07:00
parent b06c76e477
commit 23895b5c6c
26 changed files with 403 additions and 94 deletions
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14
zion/object/address_space.cpp
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@ -6,10 +6,10 @@
extern KernelStackManager* gKernelStackManager;
AddressSpace AddressSpace::ForRoot() {
RefPtr<AddressSpace> AddressSpace::ForRoot() {
uint64_t cr3 = 0;
asm volatile("mov %%cr3, %0;" : "=r"(cr3));
return {cr3};
return MakeRefCounted<AddressSpace>(cr3);
}
AddressSpace::AddressSpace() {
@ -22,6 +22,10 @@ uint64_t AddressSpace::AllocateUserStack() {
}
uint64_t AddressSpace::GetNextMemMapAddr(uint64_t size) {
if (size == 0) {
panic("Zero size memmap");
}
size = ((size - 1) & ~0xFFF) + 0x1000;
uint64_t addr = next_memmap_addr_;
next_memmap_addr_ += size;
if (next_memmap_addr_ >= 0x30'00000000) {
@ -35,6 +39,12 @@ void AddressSpace::MapInMemoryObject(uint64_t vaddr,
memory_mappings_.PushBack({.vaddr = vaddr, .mem_obj = mem_obj});
}
uint64_t AddressSpace::MapInMemoryObject(const RefPtr<MemoryObject>& mem_obj) {
uint64_t vaddr = GetNextMemMapAddr(mem_obj->size());
memory_mappings_.PushBack({.vaddr = vaddr, .mem_obj = mem_obj});
return vaddr;
}
uint64_t* AddressSpace::AllocateKernelStack() {
return gKernelStackManager->AllocateKernelStack();
}