[SeaBIOS] [PATCH 2/2] kbd: Refactor capslock and numlock handling
Kevin O'Connor
kevin at koconnor.net
Tue Jan 12 19:13:37 CET 2016
Simplify the scan_to_scanascii[] table by implementing numlock and
capslock checking in the code.
Signed-off-by: Kevin O'Connor <kevin at koconnor.net>
---
src/kbd.c | 197 ++++++++++++++++++++++++++++++--------------------------------
1 file changed, 96 insertions(+), 101 deletions(-)
diff --git a/src/kbd.c b/src/kbd.c
index 2bf7398..8b59493 100644
--- a/src/kbd.c
+++ b/src/kbd.c
@@ -279,105 +279,102 @@ handle_16(struct bregs *regs)
}
#define none 0
-#define MNUM KF0_NUMACTIVE
-#define MCAP KF0_CAPSACTIVE
static struct scaninfo {
u16 normal;
u16 shift;
u16 control;
u16 alt;
- u8 lock_flags;
} scan_to_keycode[] VAR16 = {
- { none, none, none, none, none },
- { 0x011b, 0x011b, 0x011b, 0x0100, none }, /* escape */
- { 0x0231, 0x0221, none, 0x7800, none }, /* 1! */
- { 0x0332, 0x0340, 0x0300, 0x7900, none }, /* 2@ */
- { 0x0433, 0x0423, none, 0x7a00, none }, /* 3# */
- { 0x0534, 0x0524, none, 0x7b00, none }, /* 4$ */
- { 0x0635, 0x0625, none, 0x7c00, none }, /* 5% */
- { 0x0736, 0x075e, 0x071e, 0x7d00, none }, /* 6^ */
- { 0x0837, 0x0826, none, 0x7e00, none }, /* 7& */
- { 0x0938, 0x092a, none, 0x7f00, none }, /* 8* */
- { 0x0a39, 0x0a28, none, 0x8000, none }, /* 9( */
- { 0x0b30, 0x0b29, none, 0x8100, none }, /* 0) */
- { 0x0c2d, 0x0c5f, 0x0c1f, 0x8200, none }, /* -_ */
- { 0x0d3d, 0x0d2b, none, 0x8300, none }, /* =+ */
- { 0x0e08, 0x0e08, 0x0e7f, none, none }, /* backspace */
- { 0x0f09, 0x0f00, none, none, none }, /* tab */
- { 0x1071, 0x1051, 0x1011, 0x1000, MCAP }, /* Q */
- { 0x1177, 0x1157, 0x1117, 0x1100, MCAP }, /* W */
- { 0x1265, 0x1245, 0x1205, 0x1200, MCAP }, /* E */
- { 0x1372, 0x1352, 0x1312, 0x1300, MCAP }, /* R */
- { 0x1474, 0x1454, 0x1414, 0x1400, MCAP }, /* T */
- { 0x1579, 0x1559, 0x1519, 0x1500, MCAP }, /* Y */
- { 0x1675, 0x1655, 0x1615, 0x1600, MCAP }, /* U */
- { 0x1769, 0x1749, 0x1709, 0x1700, MCAP }, /* I */
- { 0x186f, 0x184f, 0x180f, 0x1800, MCAP }, /* O */
- { 0x1970, 0x1950, 0x1910, 0x1900, MCAP }, /* P */
- { 0x1a5b, 0x1a7b, 0x1a1b, none, none }, /* [{ */
- { 0x1b5d, 0x1b7d, 0x1b1d, none, none }, /* ]} */
- { 0x1c0d, 0x1c0d, 0x1c0a, none, none }, /* Enter */
- { none, none, none, none, none }, /* L Ctrl */
- { 0x1e61, 0x1e41, 0x1e01, 0x1e00, MCAP }, /* A */
- { 0x1f73, 0x1f53, 0x1f13, 0x1f00, MCAP }, /* S */
- { 0x2064, 0x2044, 0x2004, 0x2000, MCAP }, /* D */
- { 0x2166, 0x2146, 0x2106, 0x2100, MCAP }, /* F */
- { 0x2267, 0x2247, 0x2207, 0x2200, MCAP }, /* G */
- { 0x2368, 0x2348, 0x2308, 0x2300, MCAP }, /* H */
- { 0x246a, 0x244a, 0x240a, 0x2400, MCAP }, /* J */
- { 0x256b, 0x254b, 0x250b, 0x2500, MCAP }, /* K */
- { 0x266c, 0x264c, 0x260c, 0x2600, MCAP }, /* L */
- { 0x273b, 0x273a, none, none, none }, /* ;: */
- { 0x2827, 0x2822, none, none, none }, /* '" */
- { 0x2960, 0x297e, none, none, none }, /* `~ */
- { none, none, none, none, none }, /* L shift */
- { 0x2b5c, 0x2b7c, 0x2b1c, none, none }, /* |\ */
- { 0x2c7a, 0x2c5a, 0x2c1a, 0x2c00, MCAP }, /* Z */
- { 0x2d78, 0x2d58, 0x2d18, 0x2d00, MCAP }, /* X */
- { 0x2e63, 0x2e43, 0x2e03, 0x2e00, MCAP }, /* C */
- { 0x2f76, 0x2f56, 0x2f16, 0x2f00, MCAP }, /* V */
- { 0x3062, 0x3042, 0x3002, 0x3000, MCAP }, /* B */
- { 0x316e, 0x314e, 0x310e, 0x3100, MCAP }, /* N */
- { 0x326d, 0x324d, 0x320d, 0x3200, MCAP }, /* M */
- { 0x332c, 0x333c, none, none, none }, /* ,< */
- { 0x342e, 0x343e, none, none, none }, /* .> */
- { 0x352f, 0x353f, none, none, none }, /* /? */
- { none, none, none, none, none }, /* R Shift */
- { 0x372a, 0x372a, none, none, none }, /* * */
- { none, none, none, none, none }, /* L Alt */
- { 0x3920, 0x3920, 0x3920, 0x3920, none }, /* space */
- { none, none, none, none, none }, /* caps lock */
- { 0x3b00, 0x5400, 0x5e00, 0x6800, none }, /* F1 */
- { 0x3c00, 0x5500, 0x5f00, 0x6900, none }, /* F2 */
- { 0x3d00, 0x5600, 0x6000, 0x6a00, none }, /* F3 */
- { 0x3e00, 0x5700, 0x6100, 0x6b00, none }, /* F4 */
- { 0x3f00, 0x5800, 0x6200, 0x6c00, none }, /* F5 */
- { 0x4000, 0x5900, 0x6300, 0x6d00, none }, /* F6 */
- { 0x4100, 0x5a00, 0x6400, 0x6e00, none }, /* F7 */
- { 0x4200, 0x5b00, 0x6500, 0x6f00, none }, /* F8 */
- { 0x4300, 0x5c00, 0x6600, 0x7000, none }, /* F9 */
- { 0x4400, 0x5d00, 0x6700, 0x7100, none }, /* F10 */
- { none, none, none, none, none }, /* Num Lock */
- { none, none, none, none, none }, /* Scroll Lock */
- { 0x4700, 0x4737, 0x7700, none, MNUM }, /* 7 Home */
- { 0x4800, 0x4838, none, none, MNUM }, /* 8 UP */
- { 0x4900, 0x4939, 0x8400, none, MNUM }, /* 9 PgUp */
- { 0x4a2d, 0x4a2d, none, none, none }, /* - */
- { 0x4b00, 0x4b34, 0x7300, none, MNUM }, /* 4 Left */
- { 0x4c00, 0x4c35, none, none, MNUM }, /* 5 */
- { 0x4d00, 0x4d36, 0x7400, none, MNUM }, /* 6 Right */
- { 0x4e2b, 0x4e2b, none, none, none }, /* + */
- { 0x4f00, 0x4f31, 0x7500, none, MNUM }, /* 1 End */
- { 0x5000, 0x5032, none, none, MNUM }, /* 2 Down */
- { 0x5100, 0x5133, 0x7600, none, MNUM }, /* 3 PgDn */
- { 0x5200, 0x5230, none, none, MNUM }, /* 0 Ins */
- { 0x5300, 0x532e, none, none, MNUM }, /* Del */
- { none, none, none, none, none },
- { none, none, none, none, none },
- { 0x565c, 0x567c, none, none, none }, /* \| */
- { 0x8500, 0x8700, 0x8900, 0x8b00, none }, /* F11 */
- { 0x8600, 0x8800, 0x8a00, 0x8c00, none }, /* F12 */
+ { none, none, none, none },
+ { 0x011b, 0x011b, 0x011b, 0x0100 }, /* escape */
+ { 0x0231, 0x0221, none, 0x7800 }, /* 1! */
+ { 0x0332, 0x0340, 0x0300, 0x7900 }, /* 2@ */
+ { 0x0433, 0x0423, none, 0x7a00 }, /* 3# */
+ { 0x0534, 0x0524, none, 0x7b00 }, /* 4$ */
+ { 0x0635, 0x0625, none, 0x7c00 }, /* 5% */
+ { 0x0736, 0x075e, 0x071e, 0x7d00 }, /* 6^ */
+ { 0x0837, 0x0826, none, 0x7e00 }, /* 7& */
+ { 0x0938, 0x092a, none, 0x7f00 }, /* 8* */
+ { 0x0a39, 0x0a28, none, 0x8000 }, /* 9( */
+ { 0x0b30, 0x0b29, none, 0x8100 }, /* 0) */
+ { 0x0c2d, 0x0c5f, 0x0c1f, 0x8200 }, /* -_ */
+ { 0x0d3d, 0x0d2b, none, 0x8300 }, /* =+ */
+ { 0x0e08, 0x0e08, 0x0e7f, none }, /* backspace */
+ { 0x0f09, 0x0f00, none, none }, /* tab */
+ { 0x1071, 0x1051, 0x1011, 0x1000 }, /* Q */
+ { 0x1177, 0x1157, 0x1117, 0x1100 }, /* W */
+ { 0x1265, 0x1245, 0x1205, 0x1200 }, /* E */
+ { 0x1372, 0x1352, 0x1312, 0x1300 }, /* R */
+ { 0x1474, 0x1454, 0x1414, 0x1400 }, /* T */
+ { 0x1579, 0x1559, 0x1519, 0x1500 }, /* Y */
+ { 0x1675, 0x1655, 0x1615, 0x1600 }, /* U */
+ { 0x1769, 0x1749, 0x1709, 0x1700 }, /* I */
+ { 0x186f, 0x184f, 0x180f, 0x1800 }, /* O */
+ { 0x1970, 0x1950, 0x1910, 0x1900 }, /* P */
+ { 0x1a5b, 0x1a7b, 0x1a1b, none }, /* [{ */
+ { 0x1b5d, 0x1b7d, 0x1b1d, none }, /* ]} */
+ { 0x1c0d, 0x1c0d, 0x1c0a, none }, /* Enter */
+ { none, none, none, none }, /* L Ctrl */
+ { 0x1e61, 0x1e41, 0x1e01, 0x1e00 }, /* A */
+ { 0x1f73, 0x1f53, 0x1f13, 0x1f00 }, /* S */
+ { 0x2064, 0x2044, 0x2004, 0x2000 }, /* D */
+ { 0x2166, 0x2146, 0x2106, 0x2100 }, /* F */
+ { 0x2267, 0x2247, 0x2207, 0x2200 }, /* G */
+ { 0x2368, 0x2348, 0x2308, 0x2300 }, /* H */
+ { 0x246a, 0x244a, 0x240a, 0x2400 }, /* J */
+ { 0x256b, 0x254b, 0x250b, 0x2500 }, /* K */
+ { 0x266c, 0x264c, 0x260c, 0x2600 }, /* L */
+ { 0x273b, 0x273a, none, none }, /* ;: */
+ { 0x2827, 0x2822, none, none }, /* '" */
+ { 0x2960, 0x297e, none, none }, /* `~ */
+ { none, none, none, none }, /* L shift */
+ { 0x2b5c, 0x2b7c, 0x2b1c, none }, /* |\ */
+ { 0x2c7a, 0x2c5a, 0x2c1a, 0x2c00 }, /* Z */
+ { 0x2d78, 0x2d58, 0x2d18, 0x2d00 }, /* X */
+ { 0x2e63, 0x2e43, 0x2e03, 0x2e00 }, /* C */
+ { 0x2f76, 0x2f56, 0x2f16, 0x2f00 }, /* V */
+ { 0x3062, 0x3042, 0x3002, 0x3000 }, /* B */
+ { 0x316e, 0x314e, 0x310e, 0x3100 }, /* N */
+ { 0x326d, 0x324d, 0x320d, 0x3200 }, /* M */
+ { 0x332c, 0x333c, none, none }, /* ,< */
+ { 0x342e, 0x343e, none, none }, /* .> */
+ { 0x352f, 0x353f, none, none }, /* /? */
+ { none, none, none, none }, /* R Shift */
+ { 0x372a, 0x372a, none, none }, /* * */
+ { none, none, none, none }, /* L Alt */
+ { 0x3920, 0x3920, 0x3920, 0x3920 }, /* space */
+ { none, none, none, none }, /* caps lock */
+ { 0x3b00, 0x5400, 0x5e00, 0x6800 }, /* F1 */
+ { 0x3c00, 0x5500, 0x5f00, 0x6900 }, /* F2 */
+ { 0x3d00, 0x5600, 0x6000, 0x6a00 }, /* F3 */
+ { 0x3e00, 0x5700, 0x6100, 0x6b00 }, /* F4 */
+ { 0x3f00, 0x5800, 0x6200, 0x6c00 }, /* F5 */
+ { 0x4000, 0x5900, 0x6300, 0x6d00 }, /* F6 */
+ { 0x4100, 0x5a00, 0x6400, 0x6e00 }, /* F7 */
+ { 0x4200, 0x5b00, 0x6500, 0x6f00 }, /* F8 */
+ { 0x4300, 0x5c00, 0x6600, 0x7000 }, /* F9 */
+ { 0x4400, 0x5d00, 0x6700, 0x7100 }, /* F10 */
+ { none, none, none, none }, /* Num Lock */
+ { none, none, none, none }, /* Scroll Lock */
+ { 0x4700, 0x4737, 0x7700, none }, /* 7 Home */
+ { 0x4800, 0x4838, none, none }, /* 8 UP */
+ { 0x4900, 0x4939, 0x8400, none }, /* 9 PgUp */
+ { 0x4a2d, 0x4a2d, none, none }, /* - */
+ { 0x4b00, 0x4b34, 0x7300, none }, /* 4 Left */
+ { 0x4c00, 0x4c35, none, none }, /* 5 */
+ { 0x4d00, 0x4d36, 0x7400, none }, /* 6 Right */
+ { 0x4e2b, 0x4e2b, none, none }, /* + */
+ { 0x4f00, 0x4f31, 0x7500, none }, /* 1 End */
+ { 0x5000, 0x5032, none, none }, /* 2 Down */
+ { 0x5100, 0x5133, 0x7600, none }, /* 3 PgDn */
+ { 0x5200, 0x5230, none, none }, /* 0 Ins */
+ { 0x5300, 0x532e, none, none }, /* Del */
+ { none, none, none, none },
+ { none, none, none, none },
+ { 0x565c, 0x567c, none, none }, /* \| */
+ { 0x8500, 0x8700, 0x8900, 0x8b00 }, /* F11 */
+ { 0x8600, 0x8800, 0x8a00, 0x8c00 }, /* F12 */
};
// Handle a ps2 style scancode read from the keyboard.
@@ -518,16 +515,14 @@ __process_key(u8 scancode)
&& scancode >= 0x47 && scancode <= 0x53) {
/* extended keys handling */
keycode = (scancode << 8) | 0xe0;
- } else if (flags0 & (KF0_RSHIFT|KF0_LSHIFT)) {
- /* check if lock state should be ignored because a SHIFT
- * key is pressed */
- if (flags0 & GET_GLOBAL(info->lock_flags))
- keycode = GET_GLOBAL(info->normal);
- else
- keycode = GET_GLOBAL(info->shift);
} else {
- /* check if lock is on */
- if (flags0 & GET_GLOBAL(info->lock_flags))
+ u8 useshift = flags0 & (KF0_RSHIFT|KF0_LSHIFT) ? 1 : 0;
+ u8 ascii = GET_GLOBAL(info->normal) & 0xff;
+ if ((flags0 & KF0_NUMACTIVE && scancode >= 0x47 && scancode <= 0x53)
+ || (flags0 & KF0_CAPSACTIVE && ascii >= 'a' && ascii <= 'z'))
+ // Numlock/capslock toggles shift on certain keys
+ useshift ^= 1;
+ if (useshift)
keycode = GET_GLOBAL(info->shift);
else
keycode = GET_GLOBAL(info->normal);
--
2.5.0
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