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Basic ^C interrupt implementation.

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For testing, I made cat put itself into a new process group.
This should eventually be done by sh between fork() and exec().
This commit is contained in:
Andreas Kling 2018-11-02 14:06:48 +01:00
parent 621217ffeb
commit 10b666f69a
11 changed files with 94 additions and 38 deletions
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30
Kernel/Keyboard.cpp
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@ -40,9 +40,12 @@ static char shift_map[0x100] =
void Keyboard::emit(byte ch)
{
Key key;
key.character = ch;
key.modifiers = m_modifiers;
if (m_client)
m_client->onKeyPress(ch);
m_queue.enqueue(ch);
m_client->onKeyPress(key);
m_queue.enqueue(key);
}
void Keyboard::handleIRQ()
@ -50,12 +53,12 @@ void Keyboard::handleIRQ()
while (IO::in8(0x64) & 1) {
BYTE ch = IO::in8(0x60);
switch (ch) {
case 0x38: m_modifiers |= MOD_ALT; break;
case 0xB8: m_modifiers &= ~MOD_ALT; break;
case 0x1D: m_modifiers |= MOD_CTRL; break;
case 0x9D: m_modifiers &= ~MOD_CTRL; break;
case 0x2A: m_modifiers |= MOD_SHIFT; break;
case 0xAA: m_modifiers &= ~MOD_SHIFT; break;
case 0x38: m_modifiers |= Mod_Alt; break;
case 0xB8: m_modifiers &= ~Mod_Alt; break;
case 0x1D: m_modifiers |= Mod_Ctrl; break;
case 0x9D: m_modifiers &= ~Mod_Ctrl; break;
case 0x2A: m_modifiers |= Mod_Shift; break;
case 0xAA: m_modifiers &= ~Mod_Shift; break;
case 0x1C: /* enter */ emit('\n'); break;
case 0xFA: /* i8042 ack */ break;
default:
@ -75,16 +78,13 @@ void Keyboard::handleIRQ()
break;
}
}
if (!m_modifiers) {
if (!m_modifiers)
emit(map[ch]);
} else if (m_modifiers & MOD_SHIFT) {
else if (m_modifiers & Mod_Shift)
emit(shift_map[ch]);
} else if (m_modifiers & MOD_CTRL) {
// FIXME: This is obviously not a good enough way to process ctrl+whatever.
emit('^');
else if (m_modifiers & Mod_Ctrl)
emit(shift_map[ch]);
}
}
//break;
}
}
@ -127,7 +127,7 @@ ssize_t Keyboard::read(byte* buffer, size_t size)
while (nread < size) {
if (m_queue.isEmpty())
break;
buffer[nread++] = m_queue.dequeue();
buffer[nread++] = m_queue.dequeue().character;
}
return nread;
}