drew/acadia
1
0
Fork 0
Code Issues 6 Pull requests Projects Releases Packages Wiki Activity Actions

Add a process spawn syscall and use it to start a proc.

Browse source 
Also add a skeleton VirtualMemory manager to be used per process.
This commit is contained in:
Drew Galbraith 2023-05-30 20:55:03 -07:00
parent 5bcf1f4e4a
commit 3c3341a90f
7 changed files with 125 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

30
zion/loader/init_loader.cpp
View file

@ -3,27 +3,42 @@
#include "boot/boot_info.h"
#include "debug/debug.h"
#include "loader/elf_loader.h"
#include "memory/paging_util.h"
#include "scheduler/process.h"
#include "scheduler/process_manager.h"
namespace {
const limine_file& GetInitProgram() {
bool streq(const char* a, const char* b) {
while (true) {
if (*a == '\0' && *b == '\0') return true;
if (*a == '\0' || *b == '\0') {
return false;
}
if (*a != *b) {
return false;
}
a++;
b++;
}
}
const limine_file& GetInitProgram(const char* path) {
const limine_module_response& resp = boot::GetModules();
dbgln("Dumping modules");
for (uint64_t i = 0; i < resp.module_count; i++) {
const limine_file& file = *resp.modules[i];
dbgln("%s,%m,%x", file.path, file.address, file.size);
// TODO eventually compare this file path.
return file;
if (streq(file.path, path)) return file;
}
panic("No init program found");
panic("Program not found: %s", path);
}
} // namespace
void LoadInitProgram() {
const limine_file& init_prog = GetInitProgram();
const limine_file& init_prog = GetInitProgram("/sys/test");
const limine_file& prog2 = GetInitProgram("/sys/test2");
SharedPtr<Process> proc = MakeShared<Process>();
gProcMan->InsertProcess(proc);
@ -31,5 +46,10 @@ void LoadInitProgram() {
uint64_t entry =
LoadElfProgram(proc->cr3(), reinterpret_cast<uint64_t>(init_prog.address),
init_prog.size);
CopyIntoNonResidentProcess(reinterpret_cast<uint64_t>(prog2.address),
prog2.size, proc->cr3(),
proc->vmm().GetNextMemMapAddr(prog2.size));
proc->CreateThread(entry);
}