From ea08eeccae9297f7aabd2ef7f0c2517ac4549acc Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:18:26 +0000
Subject: [PATCH] write in 30M
---
kernel/include/linux/console_struct.h | 101 ++++++++++++++++++++++++++++++--------------------
1 files changed, 60 insertions(+), 41 deletions(-)
diff --git a/kernel/include/linux/console_struct.h b/kernel/include/linux/console_struct.h
index 8b5bc3a..d5b9c8d 100644
--- a/kernel/include/linux/console_struct.h
+++ b/kernel/include/linux/console_struct.h
@@ -21,6 +21,43 @@
struct uni_screen;
#define NPAR 16
+#define VC_TABSTOPS_COUNT 256U
+
+enum vc_intensity {
+ VCI_HALF_BRIGHT,
+ VCI_NORMAL,
+ VCI_BOLD,
+ VCI_MASK = 0x3,
+};
+
+/**
+ * struct vc_state -- state of a VC
+ * @x: cursor's x-position
+ * @y: cursor's y-position
+ * @color: foreground & background colors
+ * @Gx_charset: what's G0/G1 slot set to (like GRAF_MAP, LAT1_MAP)
+ * @charset: what character set to use (0=G0 or 1=G1)
+ * @intensity: see enum vc_intensity for values
+ * @reverse: reversed foreground/background colors
+ *
+ * These members are defined separately from struct vc_data as we save &
+ * restore them at times.
+ */
+struct vc_state {
+ unsigned int x, y;
+
+ unsigned char color;
+
+ unsigned char Gx_charset[2];
+ unsigned int charset : 1;
+
+ /* attribute flags */
+ enum vc_intensity intensity;
+ bool italic;
+ bool underline;
+ bool blink;
+ bool reverse;
+};
/*
* Example: vc_data of a console that was scrolled 3 lines down.
@@ -57,6 +94,8 @@
struct vc_data {
struct tty_port port; /* Upper level data */
+ struct vc_state state, saved_state;
+
unsigned short vc_num; /* Console number */
unsigned int vc_cols; /* [#] Console size */
unsigned int vc_rows;
@@ -74,8 +113,6 @@
/* attributes for all characters on screen */
unsigned char vc_attr; /* Current attributes */
unsigned char vc_def_color; /* Default colors */
- unsigned char vc_color; /* Foreground & background */
- unsigned char vc_s_color; /* Saved foreground & background */
unsigned char vc_ulcolor; /* Color for underline mode */
unsigned char vc_itcolor;
unsigned char vc_halfcolor; /* Color for half intensity mode */
@@ -83,8 +120,6 @@
unsigned int vc_cursor_type;
unsigned short vc_complement_mask; /* [#] Xor mask for mouse pointer */
unsigned short vc_s_complement_mask; /* Saved mouse pointer mask */
- unsigned int vc_x, vc_y; /* Cursor position */
- unsigned int vc_saved_x, vc_saved_y;
unsigned long vc_pos; /* Cursor address */
/* fonts */
unsigned short vc_hi_font_mask; /* [#] Attribute set for upper 256 chars of font or 0 if not supported */
@@ -99,8 +134,6 @@
int vt_newvt;
wait_queue_head_t paste_wait;
/* mode flags */
- unsigned int vc_charset : 1; /* Character set G0 / G1 */
- unsigned int vc_s_charset : 1; /* Saved character set */
unsigned int vc_disp_ctrl : 1; /* Display chars < 32? */
unsigned int vc_toggle_meta : 1; /* Toggle high bit? */
unsigned int vc_decscnm : 1; /* Screen Mode */
@@ -108,32 +141,17 @@
unsigned int vc_decawm : 1; /* Autowrap Mode */
unsigned int vc_deccm : 1; /* Cursor Visible */
unsigned int vc_decim : 1; /* Insert Mode */
- /* attribute flags */
- unsigned int vc_intensity : 2; /* 0=half-bright, 1=normal, 2=bold */
- unsigned int vc_italic:1;
- unsigned int vc_underline : 1;
- unsigned int vc_blink : 1;
- unsigned int vc_reverse : 1;
- unsigned int vc_s_intensity : 2; /* saved rendition */
- unsigned int vc_s_italic:1;
- unsigned int vc_s_underline : 1;
- unsigned int vc_s_blink : 1;
- unsigned int vc_s_reverse : 1;
/* misc */
- unsigned int vc_ques : 1;
+ unsigned int vc_priv : 3;
unsigned int vc_need_wrap : 1;
unsigned int vc_can_do_color : 1;
unsigned int vc_report_mouse : 2;
unsigned char vc_utf : 1; /* Unicode UTF-8 encoding */
unsigned char vc_utf_count;
int vc_utf_char;
- unsigned int vc_tab_stop[8]; /* Tab stops. 256 columns. */
+ DECLARE_BITMAP(vc_tab_stop, VC_TABSTOPS_COUNT); /* Tab stops. 256 columns. */
unsigned char vc_palette[16*3]; /* Colour palette for VGA+ */
unsigned short * vc_translate;
- unsigned char vc_G0_charset;
- unsigned char vc_G1_charset;
- unsigned char vc_saved_G0;
- unsigned char vc_saved_G1;
unsigned int vc_resize_user; /* resize request from user */
unsigned int vc_bell_pitch; /* Console bell pitch */
unsigned int vc_bell_duration; /* Console bell duration */
@@ -142,7 +160,6 @@
struct uni_pagedir *vc_uni_pagedir;
struct uni_pagedir **vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */
struct uni_screen *vc_uni_screen; /* unicode screen content */
- bool vc_panic_force_write; /* when oops/panic this VC can accept forced output/blanking */
/* additional information is in vt_kern.h */
};
@@ -151,28 +168,30 @@
struct work_struct SAK_work;
/* might add scrmem, kbd at some time,
- to have everything in one place - the disadvantage
- would be that vc_cons etc can no longer be static */
+ to have everything in one place */
};
extern struct vc vc_cons [MAX_NR_CONSOLES];
extern void vc_SAK(struct work_struct *work);
-#define CUR_DEF 0
-#define CUR_NONE 1
-#define CUR_UNDERLINE 2
-#define CUR_LOWER_THIRD 3
-#define CUR_LOWER_HALF 4
-#define CUR_TWO_THIRDS 5
-#define CUR_BLOCK 6
-#define CUR_HWMASK 0x0f
-#define CUR_SWMASK 0xfff0
+#define CUR_MAKE(size, change, set) ((size) | ((change) << 8) | \
+ ((set) << 16))
+#define CUR_SIZE(c) ((c) & 0x00000f)
+# define CUR_DEF 0
+# define CUR_NONE 1
+# define CUR_UNDERLINE 2
+# define CUR_LOWER_THIRD 3
+# define CUR_LOWER_HALF 4
+# define CUR_TWO_THIRDS 5
+# define CUR_BLOCK 6
+#define CUR_SW 0x000010
+#define CUR_ALWAYS_BG 0x000020
+#define CUR_INVERT_FG_BG 0x000040
+#define CUR_FG 0x000700
+#define CUR_BG 0x007000
+#define CUR_CHANGE(c) ((c) & 0x00ff00)
+#define CUR_SET(c) (((c) & 0xff0000) >> 8)
-#define CUR_DEFAULT CUR_UNDERLINE
-
-static inline bool con_is_visible(const struct vc_data *vc)
-{
- return *vc->vc_display_fg == vc;
-}
+bool con_is_visible(const struct vc_data *vc);
#endif /* _LINUX_CONSOLE_STRUCT_H */
--
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