From bb08472a04127c994d3ea5a2cbc195f7116a03b8 Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Fri, 11 Sep 2026 11:16:36 -0400
Subject: preliminary object linking support. needs testing

---
 sys/syscall.c | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

(limited to 'sys/syscall.c')

diff --git a/sys/syscall.c b/sys/syscall.c
index 68a5ae6..9a98030 100644
--- a/sys/syscall.c
+++ b/sys/syscall.c
@@ -4,6 +4,7 @@
 #include "hal/process.h"
 #include "jove.h"
 #include "lib/printf.h"
+#include "sys/link.h"
 #include "sys/message.h"
 
 int
@@ -33,6 +34,7 @@ static const syscall_handle_t s_syscall_handles[128] = {
     [JOVE_OBJ_FRAMEBUFFER] = _syscall_handle_generic,
     [JOVE_OBJ_VIRTTERM] = _syscall_handle_vtt,
     [JOVE_OBJ_MESSAGE] = _syscall_handle_generic,
+    [JOVE_OBJ_LINK] = _syscall_handle_generic,
 };
 
 int
@@ -55,15 +57,11 @@ syscall_handler(uintmax_t message_path_raw, uint16_t message_pathlen)
         return errno;
     }
 
-#define SYSCALL_MIDWAY_CLEANUP \
-    obj_release(message_obj); \
-    obj_release(objdir); \
-    obj_release(pcb_obj)
-
-    if(obj_gettype(message_obj) != JOVE_OBJ_MESSAGE) {
+    int sysret = 0;
+    if(obj_gettype_linked(message_obj) != JOVE_OBJ_MESSAGE) {
         kprintf("syscall: Process %i tried to call syscall with invalid object: %P\n", pcb_pid(pcb), message_path, message_pathlen);
-        SYSCALL_MIDWAY_CLEANUP;
-        return EBADOBJ;
+        sysret = EBADOBJ;
+        goto release_return;
     }
 
     size_t messagelen = message_len(message_obj);
@@ -75,18 +73,17 @@ syscall_handler(uintmax_t message_path_raw, uint16_t message_pathlen)
     if(bytes_left < 0) {
         //Target path exceeds message length.
         kprintf("syscall: Process %i tried to call syscall with OOB target path.\n", pcb_pid(pcb));
-        SYSCALL_MIDWAY_CLEANUP;
-        return EBADPATH;
+        sysret = EBADPATH;
+        goto release_return;
     }
     jove_owned_obj_t *target = objdir_getobj(objdir, header->path, header->pathlen);
     if(target == 0) {
         //Could not find payload target in pcb rootdir.
         kprintf("syscall: Process %i tried to call syscall with bad target path %P\n", 
                 pcb_pid(pcb), header->path, header->pathlen);
-        SYSCALL_MIDWAY_CLEANUP;
-        return errno;
+        sysret = errno;
+        goto release_return;
     }
-    int sysret = 0;
 
     uint8_t target_type = obj_gettype(target);
     if(target_type > 0x7F) {
@@ -104,8 +101,10 @@ syscall_handler(uintmax_t message_path_raw, uint16_t message_pathlen)
                     pcb_obj, objdir, message_obj, target, 
                     header, bytes_left, messagedata + header_bytes);
     }
-
     obj_release(target);
-    SYSCALL_MIDWAY_CLEANUP;
+release_return:
+    obj_release(message_obj);
+    obj_release(objdir);
+    obj_release(pcb_obj);
     return sysret;
 }
-- 
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