From 53a3d70e238e423f8543164c0d4c5d2db2e1adbd Mon Sep 17 00:00:00 2001
From: Freya Murphy <freya@freyacat.org>
Date: Sun, 27 Apr 2025 14:05:45 -0400
Subject: new syscalls

---
 user/include/unistd.h | 16 ++++++++++++++++
 user/lib/syscall.S    |  2 ++
 2 files changed, 18 insertions(+)

(limited to 'user')

diff --git a/user/include/unistd.h b/user/include/unistd.h
index bbacdbe..f080917 100644
--- a/user/include/unistd.h
+++ b/user/include/unistd.h
@@ -169,4 +169,20 @@ extern void *sbrk(intptr_t increment);
  */
 extern int poweroff(void);
 
+/**
+ * Gets access to the "direct rendering manager" (framebuffer)
+ *
+ * @param fb - address of framebuffer
+ * @param width - returns the width of the framebuffer
+ * @param height - returns the height of the framebuffer
+ * @param bpp - returns the bit depth of the framebuffer
+ * @returns 0 on success, error code on failure
+ */
+extern int drm(void **fb, int *width, int *height, int *bbp);
+
+/**
+ * @returns number of ticks the system has been up for (1ms)
+ */
+extern uint64_t ticks(void);
+
 #endif /* unistd.h */
diff --git a/user/lib/syscall.S b/user/lib/syscall.S
index c5a23b5..2ba4dc0 100644
--- a/user/lib/syscall.S
+++ b/user/lib/syscall.S
@@ -25,3 +25,5 @@ SYSCALL sleep SYS_sleep
 SYSCALL brk SYS_brk
 SYSCALL sbrk SYS_sbrk
 SYSCALL poweroff SYS_poweroff
+SYSCALL drm SYS_drm
+SYSCALL ticks SYS_ticks
-- 
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