From 548506392b789f58b1556a6ffca917441e1d89fd Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Tue, 13 Oct 2026 22:31:43 -0400
Subject: ipc functions. work on process spawning

---
 api/obj.h     |  9 +++++----
 api/process.h |  6 ++++++
 api/syscall.h | 51 ++++++++++++++++++++++++++++++++++++++++++++++++---
 3 files changed, 59 insertions(+), 7 deletions(-)

(limited to 'api')

diff --git a/api/obj.h b/api/obj.h
index 29238c1..2ac0b51 100644
--- a/api/obj.h
+++ b/api/obj.h
@@ -1,9 +1,8 @@
 #ifndef _JOVE_API_OBJ_H
 #define _JOVE_API_OBJ_H 1
 
-#include <stdint.h>
-
 typedef unsigned char objtype_t;
+typedef unsigned short objpath_part_t;
 
 enum
 {
@@ -33,8 +32,10 @@ enum
 
 #define JOVE_PERM_ALL 7
 
-#define OBJDIR_NUM_ENTRIES (0x1000 / sizeof(uintmax_t))
+#define OBJDIR_SIZE 0x1000
+#define OBJDIR_ENTRIES (OBJDIR_SIZE / sizeof(uintmax_t))
 
-typedef uint16_t objpath_part_t;
+#define MESSAGE_ALIGN 0x1000
+#define MESSAGE_SIZE 0x1000
 
 #endif
diff --git a/api/process.h b/api/process.h
index 5ccf69d..05b7632 100644
--- a/api/process.h
+++ b/api/process.h
@@ -23,4 +23,10 @@ enum pcb_rootdir_entries
     PCB_ROOTDIR_PAGEDIR_I,
 };
 
+enum pcb_stack_type
+{
+    PCB_STACK_SYSTEM = 0,
+    PCB_STACK_INTERRUPT
+};
+
 #endif
diff --git a/api/syscall.h b/api/syscall.h
index 54ff267..40fedd4 100644
--- a/api/syscall.h
+++ b/api/syscall.h
@@ -74,9 +74,31 @@ enum
 {
     _SYSCALL_OBJDIR_BADCALL = 0,
     SYSCALL_OBJDIR_OBJTYPE,
+    SYSCALL_OBJDIR_SWAP,
+    SYSCALL_OBJDIR_LINK,
+    SYSCALL_OBJDIR_ISLINK
 };
 
-#define SYSCALL_PERM_OBJDIR_OBJTYPE JOVE_PERM_READ
+#define SYSCALL_PERM_OBJDIR_OBJTYPE (JOVE_PERM_READ)
+#define SYSCALL_PERM_OBJDIR_SWAP (JOVE_PERM_WRITE)
+#define SYSCALL_PERM_OBJDIR_LINK (JOVE_PERM_WRITE)
+
+#define SYSCALL_PERM_OBJDIR_SWAP_TGT (JOVE_PERM_WRITE)
+#define SYSCALL_PERM_OBJDIR_LINK_TGT (JOVE_PERM_WRITE | JOVE_PERM_MUTATE)
+
+struct syscall_objdir_swap
+{
+    objpath_part_t index;
+    objpath_part_t other_path_length;
+    objpath_part_t other_path[];
+};
+
+struct syscall_objdir_link
+{
+    objpath_part_t index;
+    objpath_part_t other_path_length;
+    objpath_part_t other_path[];
+};
 
 /* JOVE_OBJ_PAGEDIR syscalls
  * */
@@ -183,17 +205,23 @@ enum
     SYSCALL_PCB_YIELD,
     SYSCALL_PCB_SEND,
     SYSCALL_PCB_RECV,
+    SYSCALL_PCB_SWAP,
+    SYSCALL_PCB_STACK,
     SYSCALL_PCB_READY,
 };
 
 #define SYSCALL_PERM_PCB_PID (JOVE_PERM_READ)
 #define SYSCALL_PERM_PCB_YIELD (JOVE_PERM_WRITE)
 #define SYSCALL_PERM_PCB_SEND (JOVE_PERM_WRITE)
-#define SYSCALL_PERM_PCB_RECV (JOVE_PERM_WRITE)
-#define SYSCALL_PERM_PCB_READY (JOVE_PERM_WRITE | JOVE_PERM_MUTATE)
+#define SYSCALL_PERM_PCB_RECV (JOVE_PERM_READ | JOVE_PERM_WRITE)
+#define SYSCALL_PERM_PCB_SWAP (SYSCALL_PERM_PCB_SEND | SYSCALL_PERM_PCB_RECV)
+#define SYSCALL_PERM_PCB_STACK (JOVE_PERM_WRITE | JOVE_PERM_MUTATE)
+#define SYSCALL_PERM_PCB_READY (JOVE_PERM_ALL)
 
 #define SYSCALL_PERM_PCB_SEND_OBJDIR (JOVE_PERM_WRITE)
 #define SYSCALL_PERM_PCB_RECV_DST (JOVE_PERM_MUTATE)
+#define SYSCALL_PERM_PCB_SWAP_OBJ (JOVE_PERM_MUTATE)
+#define SYSCALL_PERM_PCB_STACK_OBJ (JOVE_PERM_WRITE | JOVE_PERM_MUTATE)
 
 struct syscall_pcb_yield 
 {
@@ -216,6 +244,23 @@ struct syscall_pcb_recv
     objpath_part_t recv_path[];
 };
 
+struct syscall_pcb_swap
+{
+    pid_t swap_target;
+    uintmax_t send_timeout;
+    uintmax_t recv_timeout;
+
+    objpath_part_t swap_path_length;
+    objpath_part_t swap_path[];
+};
+
+struct syscall_pcb_stack
+{
+    char type;
+    objpath_part_t stack_path_length;
+    objpath_part_t stack_path[];
+};
+
 /**JOVE_OBJ_INITRD_FILE syscalls
  * */
 
-- 
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