From d8aca3ff2501f9a77e22e5afb7a30380aed205af Mon Sep 17 00:00:00 2001
From: Jon Santmyer <jon@jonsantmyer.com>
Date: Fri, 16 Oct 2026 16:42:22 -0400
Subject: remove explicit framebuffer in kernel. reduce locking in syscalls

---
 arch/x86_64/sys/syscall.c        |  6 ++++--
 arch/x86_64/sys/syscall_serial.c | 33 ---------------------------------
 2 files changed, 4 insertions(+), 35 deletions(-)
 delete mode 100644 arch/x86_64/sys/syscall_serial.c

(limited to 'arch/x86_64/sys')

diff --git a/arch/x86_64/sys/syscall.c b/arch/x86_64/sys/syscall.c
index 1e06e61..2a5ce08 100644
--- a/arch/x86_64/sys/syscall.c
+++ b/arch/x86_64/sys/syscall.c
@@ -6,7 +6,7 @@
 #include "syscall.h"
 
 syscall_handle_t s_arch_handles[128] = {
-    [JOVE_OBJ_SERIAL_COM-0x80] = _syscall_handle_serial
+    NULL
 };
 
 int
@@ -50,5 +50,7 @@ void _syscall_entry(void)
                      sysretq"
                      ::
                      [pcb] "i"(offsetof(processor_t, pcb)),
-                     [ksp] "i"(offsetof(struct pcb_header, ksp)));
+                     [ksp] "i"(offsetof(struct pcb_header, ksp))
+                     : "memory");
 }
+
diff --git a/arch/x86_64/sys/syscall_serial.c b/arch/x86_64/sys/syscall_serial.c
deleted file mode 100644
index 786a78b..0000000
--- a/arch/x86_64/sys/syscall_serial.c
+++ /dev/null
@@ -1,33 +0,0 @@
-#include "jove.h"
-#include "lib/printf.h"
-#include "sys/syscall.h"
-#include "syscall.h"
-#include "arch/x86_64/hal/serial_com.h"
-
-static int
-s_syscall_serial_write(
-        jove_owned_obj_t *serial_com,
-        size_t payload_bytes,
-        void *payload_data)
-{
-    size_t bytes_needed = sizeof(struct syscall_generic_write);
-    CHECK_TOOSMALL(bytes_needed, payload_bytes, "Message is too small for this syscall!");
-
-    struct syscall_generic_write *payload = payload_data;
-    bytes_needed += payload->len * 2;
-    CHECK_TOOSMALL(bytes_needed, payload_bytes, "Message is too small for write buffer!");
-    
-    return serial_com_write(serial_com, payload->data, payload->len);
-}
-
-int
-_syscall_handle_serial(syscall_context_t *ctx)
-{
-    switch(ctx->header->callid) {
-        case SYSCALL_SERIAL_COM_WRITE:
-            return s_syscall_serial_write(ctx->target.obj, ctx->bytes_left, ctx->payload);
-        default:
-            kprintf("syscall_serial: serial com object does not support syscall %i\n", ctx->header->callid);
-            return -EBADCALL;
-    }
-}
-- 
cgit v1.2.3