Some user-side graphics

3 files changed, 23 insertions, 2 deletions

diff --git a/src/kernel/syscall/actions/sys_get_pointers.c b/src/kernel/syscall/actions/sys_get_pointers.c
new file mode 100644
index 0000000..adbdd36
--- /dev/null
+++ b/src/kernel/syscall/actions/sys_get_pointers.c
@@ -0,0 +1,18 @@
+#include <stdint.h>
+#include <kernel/graphics/vesa.h>
+#include <kernel/graphics/font.h>
+#include <kernel/paging/paging.h>
+
+struct userspace_pointers {
+    unsigned char *fb;
+    struct font *font;
+};
+
+uint32_t sys_get_pointers()
+{
+    struct userspace_pointers *pointers = (struct userspace_pointers *) paging_alloc_pages(1);
+    pointers->fb = fb;
+    pointers->font = font;
+    paging_set_user((uint32_t) pointers, 1);
+    return (uint32_t) pointers;
+}
\ No newline at end of file
diff --git a/src/kernel/syscall/syscall.c b/src/kernel/syscall/syscall.c
index 3a1b011..24f2445 100644
--- a/src/kernel/syscall/syscall.c
+++ b/src/kernel/syscall/syscall.c
@@ -13,8 +13,9 @@ uint32_t (*syscalls[])() = {
         [2] = sys_read,
         [3] = sys_writec,
         [4] = sys_readc,
-        [5] = sys_paging_alloc,
-        [6] = sys_paging_free
+        [5] = sys_get_pointers,
+        [6] = sys_paging_alloc,
+        [7] = sys_paging_free
 };
 
 void syscall_handler(struct regs *r)
diff --git a/src/kernel/syscall/syscall.h b/src/kernel/syscall/syscall.h
index a037d7f..378b5e3 100644
--- a/src/kernel/syscall/syscall.h
+++ b/src/kernel/syscall/syscall.h
@@ -13,6 +13,8 @@ uint32_t sys_read(char *buf);
 
 uint32_t sys_readc(char *ch);
 
+uint32_t sys_get_pointers();
+
 uint32_t sys_paging_alloc(uint32_t count);
 
 uint32_t sys_paging_free(uint32_t virt, uint32_t count);