feat: add proclist command, fix TLS bug, link libc for system programs

programs/GNUmakefile

@@ -348,7 +348,7 @@ $(BINDIR)/config/%: $(CONFIGDIR)/%
 $(BINDIR)/os/%.elf: src/%/main.cpp link.ld GNUmakefile
 	mkdir -p $(BINDIR)/os obj/$*
 	$(CXX) $(CXXFLAGS) -c src/$*/main.cpp -o obj/$*/main.o
-	$(CXX) $(CXXFLAGS) $(LDFLAGS) obj/$*/main.o -o $@
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) obj/$*/main.o lib/libc/liblibc.a -o $@
 
 clean:
 	rm -rf $(BINDIR) obj

programs/lib/tls/tls.cpp

@@ -151,7 +151,7 @@ void get_bearssl_time(uint32_t* days, uint32_t* seconds) {
     montauk::gettime(&dt);
     int y = dt.Year, m = dt.Month, d = dt.Day;
     uint32_t total = 365u * (uint32_t)y
-        + (uint32_t)(y/4) - (uint32_t)(y/100) + (uint32_t)(y/400);
+        + (uint32_t)((y+3)/4) - (uint32_t)((y+99)/100) + (uint32_t)((y+399)/400);
     const int md[] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
     for (int mo = 1; mo < m && mo <= 12; mo++) total += md[mo];
     if (y%4==0 && (y%100!=0 || y%400==0) && m > 2) total++;

programs/src/proclist/main.cpp

@@ -0,0 +1,28 @@
+/*
+    * main.cpp
+    * Process list command for MontaukOS userspace
+    * Copyright (c) 2026 Daniel Hammer
+*/
+
+#include <montauk/syscall.h>
+#include <libc/stdio.h>
+
+extern "C" void _start() {
+    static montauk::abi::ProcInfo processes[256];
+    int n = montauk::proclist(processes, 256);
+
+    if (n <= 0) {
+        montauk::print("Failed to query processes.\n");
+        montauk::exit(-1);
+    }
+
+    montauk::print("  PID\tHeap\tImage Name\n");
+
+    for (int i = 0; i < n; i++) {
+        unsigned heapMb = (unsigned)(processes[i].heapUsed / (1024 * 1024));
+
+        printf("  %d\t%d MB\t%s\n", processes[i].pid, heapMb, processes[i].name);
+    }
+
+    montauk::exit(0);
+}