refactor: re-structure the kernel address space for a more integral layout.

[lunaix-os.git] / lunaix-os / includes / lunaix / process.h

diff --git a/lunaix-os/includes/lunaix/process.h b/lunaix-os/includes/lunaix/process.h
index 32b74dff5397e2fe29ce13eab3ef89ea3191f317..26f33bd84dd9fbb21f753b5735a45a84458c2c5c 100644 (file)
--- a/lunaix-os/includes/lunaix/process.h
+++ b/lunaix-os/includes/lunaix/process.h
@@ -4,6 +4,7 @@
 #include <arch/x86/interrupts.h>
 #include <lunaix/clock.h>
 #include <lunaix/mm/mm.h>
+#include <lunaix/signal.h>
 #include <lunaix/timer.h>
 #include <lunaix/types.h>
 #include <stdint.h>
@@ -26,20 +27,44 @@ struct proc_mm
     struct mm_region* regions;
 };
 
+struct proc_sig
+{
+    void* signal_handler;
+    int sig_num;
+    isr_param prev_context;
+};
+
+#define PROC_SIG_SIZE sizeof(struct proc_sig) // size=84
+
 struct proc_info
 {
+    /*
+        Any change to *critical section*, including layout, size
+        must be reflected in kernel/asm/x86/interrupt.S to avoid
+        disaster!
+     */
+
+    /* ---- critical section start ---- */
+
     pid_t pid;
     struct proc_info* parent;
-    isr_param intr_ctx;
+    isr_param intr_ctx; // size=76
+    uintptr_t ustack_top;
+    void* page_table;
+
+    /* ---- critical section end ---- */
+
     struct llist_header siblings;
     struct llist_header children;
     struct llist_header grp_member;
     struct proc_mm mm;
-    void* page_table;
     time_t created;
     uint8_t state;
     int32_t exit_code;
     int32_t k_status;
+    sigset_t sig_pending;
+    sigset_t sig_mask;
+    void* sig_handler[_SIG_NUM];
     pid_t pgid;
     struct lx_timer* timer;
 };