swcursor: Move swcursor code from vgafb.c to new file swcursor.c

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 0 insertions, 57 deletions

diff --git a/vgasrc/vgafb.c b/vgasrc/vgafb.c
index bd1c8dd6..46a1ab80 100644
--- a/vgasrc/vgafb.c
+++ b/vgasrc/vgafb.c
@@ -497,30 +497,6 @@ fail:
     return (struct carattr){0, 0, 0};
 }
 
-// Draw/undraw a cursor on the framebuffer by xor'ing the cursor cell
-void
-gfx_set_swcursor(struct vgamode_s *vmode_g, int enable, struct cursorpos cp)
-{
-    u16 cursor_type = get_cursor_shape();
-    u8 start = cursor_type >> 8, end = cursor_type & 0xff;
-    struct gfx_op op;
-    init_gfx_op(&op, vmode_g);
-    op.x = cp.x * 8;
-    int cheight = GET_BDA(char_height);
-    op.y = cp.y * cheight + start;
-
-    int i;
-    for (i = start; i < cheight && i <= end; i++, op.y++) {
-        op.op = GO_READ8;
-        handle_gfx_op(&op);
-        int j;
-        for (j = 0; j < 8; j++)
-            op.pixels[j] ^= 0x07;
-        op.op = GO_WRITE8;
-        handle_gfx_op(&op);
-    }
-}
-
 // Set the pixel at the given position.
 void
 vgafb_write_pixel(u8 color, u16 x, u16 y)
@@ -686,36 +662,3 @@ vgafb_read_char(struct cursorpos cp)
     u16 v = GET_FARVAR(GET_GLOBAL(vmode_g->sstart), *dest_far);
     return (struct carattr){v, v>>8, 0};
 }
-
-// Draw/undraw a cursor on the screen
-void
-vgafb_set_swcursor(int enable)
-{
-    if (!vga_emulate_text())
-        return;
-    u8 flags = GET_BDA_EXT(flags);
-    if (!!(flags & BF_SWCURSOR) == enable)
-        // Already in requested mode.
-        return;
-    struct vgamode_s *vmode_g = get_current_mode();
-    if (!vmode_g)
-        return;
-    struct cursorpos cp = get_cursor_pos(GET_BDA(video_page));
-    if (cp.x >= GET_BDA(video_cols) || cp.y > GET_BDA(video_rows)
-        || GET_BDA(cursor_type) >= 0x2000)
-        // Cursor not visible
-        return;
-
-    SET_BDA_EXT(flags, (flags & ~BF_SWCURSOR) | (enable ? BF_SWCURSOR : 0));
-
-    if (GET_GLOBAL(vmode_g->memmodel) != MM_TEXT) {
-        gfx_set_swcursor(vmode_g, enable, cp);
-        return;
-    }
-
-    // In text mode, swap foreground and background attributes for cursor
-    void *dest_far = text_address(cp) + 1;
-    u8 attr = GET_FARVAR(GET_GLOBAL(vmode_g->sstart), *(u8*)dest_far);
-    attr = (attr >> 4) | (attr << 4);
-    SET_FARVAR(GET_GLOBAL(vmode_g->sstart), *(u8*)dest_far, attr);
-}