minor changes, redoing makefile, meminfo program

2 files changed, 26 insertions, 2 deletions

diff --git a/src/user/include/knob/format.h b/src/user/include/knob/format.h
index 16d3d83..6c4aa5d 100644
--- a/src/user/include/knob/format.h
+++ b/src/user/include/knob/format.h
@@ -5,5 +5,6 @@
 #include <stdint.h>
 
 bool try_sntoi(const char *s, uint32_t n, uint32_t *out);
+void itosz(uint32_t i, char *out);
 
 #endif
\ No newline at end of file
diff --git a/src/user/include/pland/syscall.h b/src/user/include/pland/syscall.h
index 5858d16..298fc51 100644
--- a/src/user/include/pland/syscall.h
+++ b/src/user/include/pland/syscall.h
@@ -7,6 +7,8 @@
 typedef uint32_t _file_handle_t;
 typedef uint32_t _task_handle_t;
 typedef uint32_t _drive_number_t;
+typedef uint32_t _pages_t;
+
 typedef enum {
   _KEY_BACKSPACE = '\b',
   _KEY_RETURN    = '\n',
@@ -40,7 +42,8 @@ enum _scn {
   _SCN_START_TASK,
   _SCN_LOG_STRING,
   _SCN_GET_KEY,
-  _SCN_ALLOCATE_RAM
+  _SCN_ALLOCATE_RAM,
+  _SCN_MEMORY_INFO
 };
 
 static inline uint32_t _sc0(enum _scn eax) {
@@ -133,8 +136,28 @@ static inline _key_code_t _get_key() {
   return _sc0(_SCN_GET_KEY);
 }
 
-static inline void *_allocate_ram(uint32_t pages) {
+static inline void *_allocate_ram(_pages_t pages) {
   return (void *)_sc1(_SCN_ALLOCATE_RAM, pages);
 }
 
+static inline _pages_t _kernel_dynamic_area_size() {
+  return _sc1(_SCN_MEMORY_INFO, 0x0);
+}
+
+static inline _pages_t _kernel_dynamic_area_left() {
+  return _sc1(_SCN_MEMORY_INFO, 0x1);
+}
+
+static inline _pages_t _total_userspace_size() {
+  return _sc1(_SCN_MEMORY_INFO, 0x2);
+}
+
+static inline _pages_t _total_userspace_left() {
+  return _sc1(_SCN_MEMORY_INFO, 0x3);
+}
+
+static inline _pages_t _this_process_memory_left() {
+  return _sc1(_SCN_MEMORY_INFO, 0x4);
+}
+
 #endif
\ No newline at end of file