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-rw-r--r--apps/mu.subx37
1 files changed, 9 insertions, 28 deletions
diff --git a/apps/mu.subx b/apps/mu.subx
index 5e2bab10..40f729af 100644
--- a/apps/mu.subx
+++ b/apps/mu.subx
@@ -3645,15 +3645,8 @@ new-block-name:  # fn: (handle function) -> result/eax: (handle var)
     ff 6/subop/push %eax
     ff 6/subop/push %edx
     89/<- %eax 4/r32/esp
-    # var final-name/edx: (addr array byte) = slice-to-string(s)
-    (slice-to-string Heap %eax)  # => eax
-    89/<- %edx 0/r32/eax
-    # set result->var
-    # . var type/eax: (handle tree type-id) = literal
-    (allocate Heap *Tree-size)  # => eax
-    (zero-out %eax *Tree-size)  # default type is 'literal'
-    # . var result/eax: (handle var) = new-var(final-name, type)
-    (new-var Heap %edx %eax *Curr-block-depth 0 0)  # => eax
+    # result->var = new literal(s)
+    (new-literal Heap %eax)  # => eax
 $new-block-name:end:
     # . reclaim locals
     81 0/subop/add %ecx 0xc/imm32  # name.{read/write/len}
@@ -3730,14 +3723,8 @@ parse-mu-named-block:  # name: (addr slice), in: (addr buffered-file), vars: (ad
     89/<- %ebp 4/r32/esp
     # . save registers
     51/push-ecx
-    # var s/ecx: (addr array byte) = slice-to-string(name)
-    (slice-to-string Heap *(ebp+8))  # => eax
-    89/<- %ecx 0/r32/eax
-    # var type/eax: (handle tree type-id) = literal
-    (allocate Heap *Tree-size)  # => eax
-    (zero-out %eax *Tree-size)  # default type is 'literal'
-    # var v/ecx: (handle var) = new-var(s, type)
-    (new-var Heap %ecx %eax *Curr-block-depth 0 0)  # => eax
+    # var v/ecx: (handle var)
+    (new-literal Heap *(ebp+8))  # => eax
     89/<- %ecx 0/r32/eax
     # push(vars, v)
     (push *(ebp+0x10) %ecx)
@@ -4167,7 +4154,7 @@ lookup-var-or-literal:  # name: (addr slice), vars: (addr stack (handle var)) ->
     {
       81 7/subop/compare %ecx 0x22/imm32/dquote
       75/jump-if-!= break/disp8
-      (new-literal-string Heap %esi)  # => eax
+      (new-literal Heap %esi)  # => eax
       eb/jump $lookup-var-or-literal:end/disp8
     }
     # otherwise return lookup-var(name, vars)
@@ -4523,7 +4510,7 @@ $new-literal-integer:abort:
     cd/syscall  0x80/imm8
     # never gets here
 
-new-literal-string:  # ad: (addr allocation-descriptor), name: (addr slice) -> result/eax: (handle var)
+new-literal:  # ad: (addr allocation-descriptor), name: (addr slice) -> result/eax: (handle var)
     # . prologue
     55/push-ebp
     89/<- %ebp 4/r32/esp
@@ -4532,18 +4519,12 @@ new-literal-string:  # ad: (addr allocation-descriptor), name: (addr slice) -> r
     # var s/ecx: (addr array byte)
     (slice-to-string Heap *(ebp+0xc))  # => eax
     89/<- %ecx 0/r32/eax
-    # result/ecx = new var(s)
-    (allocate *(ebp+8) *Var-size)  # => eax
-    (zero-out %eax *Var-size)
-    89/<- *eax 1/r32/ecx  # Var-name
-    89/<- %ecx 0/r32/eax
     # result->type = new type()
     (allocate *(ebp+8) *Tree-size)  # => eax
     (zero-out %eax *Tree-size)  # default type is 'literal'
-    89/<- *(ecx+4) 0/r32/eax  # Var-type
-    # move result to eax
-    89/<- %eax 1/r32/ecx
-$new-literal-string:end:
+    #
+    (new-var *(ebp+8) %ecx %eax *Curr-block-depth 0 0)  # => eax
+$new-literal:end:
     # . restore registers
     59/pop-to-ecx
     # . epilogue
0700 3592 - warn on *any* lookup of address 0' href='/akkartik/mu/commit/035lookup.cc?h=hlt&id=2ab491c23f044b620d4b5a75ed2f3c00c1de72e1'>2ab491c2 ^
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                                                                                                                         ndInputToKeyBuffer(Tty* tty, uint8 scancode, uint8 character) {
    char seq[8];
    memset(seq, 0, 8);

    switch (character) {
    case KEY_PAGEUP: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 53;
        seq[3] = 126;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 4);
    }
        break;
    case KEY_PAGEDOWN: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 54;
        seq[3] = 126;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 4);
    }
        break;
    case KEY_HOME: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 72;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 3);
    }
        break;
    case KEY_END: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 70;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 3);
    }
        break;
    case KEY_INSERT: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 50;
        seq[3] = 126;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 4);
    }
        break;
    case KEY_DELETE: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 51;
        seq[3] = 126;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 4);
    }
        break;
    case KEY_UP: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 65;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 3);
    }
        break;
    case KEY_DOWN: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 66;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 3);
    }
        break;
    case KEY_RIGHT: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 67;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 3);
    }
        break;
    case KEY_LEFT: {
        seq[0] = 27;
        seq[1] = 91;
        seq[2] = 68;
        FifoBuffer_enqueue(tty->keyBuffer, seq, 3);
    }
        break;
    default:
        FifoBuffer_enqueue(tty->keyBuffer, &character, 1);
        break;
    }
}

void sendKeyInputToTTY(Tty* tty, uint8 scancode) {
    beginCriticalSection();

    processScancode(scancode);

    uint8 character = getCharacterForScancode(gKeyModifier, scancode);

    uint8 keyRelease = (0x80 & scancode); //ignore release event

    if (character > 0 && keyRelease == 0) {
        //enqueue for non-canonical readers
        sendInputToKeyBuffer(tty, scancode, character);
        //FifoBuffer_enqueue(tty->keyBuffer, &scancode, 1);

        if (tty->lineBufferIndex >= TTY_LINEBUFFER_SIZE - 1) {
            tty->lineBufferIndex = 0;
        }

        if (character == '\b') {
            if (tty->lineBufferIndex > 0) {
                tty->lineBuffer[--tty->lineBufferIndex] = '\0';

                if ((tty->term.c_lflag & ECHO) == ECHO) {
                    write(tty, 1, &character);
                }
            }
        }
        else {
            tty->lineBuffer[tty->lineBufferIndex++] = character;

            if ((tty->term.c_lflag & ECHO) == ECHO) {
                write(tty, 1, &character);
            }
        }
    }

    //Wake readers
    List_Foreach(n, gReaderList) {
        File* file = n->data;

        if (file->thread->state == TS_WAITIO) {
            if (file->thread->state_privateData == tty) {
                file->thread->state = TS_RUN;
                file->thread->state_privateData = NULL;
            }
        }
    }

    endCriticalSection();
}

static BOOL tty_open(File *file, uint32 flags) {
    //printkf("tty_open: pid:%d\n", file->process->pid);

    Tty* tty = (Tty*)file->node->privateNodeData;

    FifoBuffer_clear(tty->keyBuffer);

    List_Append(gReaderList, file);

    return TRUE;
}

static void tty_close(File *file) {
    List_RemoveFirstOccurrence(gReaderList, file);
}

static int32 tty_ioctl(File *file, int32 request, void * argp) {
    Tty* tty = (Tty*)file->node->privateNodeData;

    switch (request) {
    case 0: {
        sendKeyInputToTTY(tty, (uint8)(uint32)argp);

        return 0;
    }
        break;
    case 1:
        return tty->columnCount * tty->lineCount * 2;
        break;
    case 2: {
        //set
        TtyUserBuffer* userTtyBuffer = (TtyUserBuffer*)argp;
        memcpy(tty->buffer, (uint8*)userTtyBuffer->buffer, tty->columnCount * tty->lineCount * 2);
        return 0;
    }
        break;
    case 3: {
        //get
        TtyUserBuffer* userTtyBuffer = (TtyUserBuffer*)argp;
        userTtyBuffer->columnCount = tty->columnCount;
        userTtyBuffer->lineCount = tty->lineCount;
        userTtyBuffer->currentColumn = tty->currentColumn;
        userTtyBuffer->currentLine = tty->currentLine;
        memcpy((uint8*)userTtyBuffer->buffer, tty->buffer, tty->columnCount * tty->lineCount * 2);
        return 0;
    }
        break;
    case TCGETS: {
        struct termios* term = (struct termios*)argp;

        //Debug_PrintF("TCGETS\n");

        memcpy((uint8*)term, (uint8*)&(tty->term), sizeof(struct termios));

        return 0;//success
    }
        break;
    case TCSETS:
    case TCSETSW:
        break;
    case TCSETSF: {
        struct termios* term = (struct termios*)argp;

        //Debug_PrintF("TCSETSF\n");

        memcpy((uint8*)&(tty->term), (uint8*)term, sizeof(struct termios));

        return 0;//success
    }
        break;
    default:
        break;
    }

    return -1;
}

static int32 tty_read(File *file, uint32 size, uint8 *buffer) {
    enableInterrupts();

    if (size > 0) {
        Tty* tty = (Tty*)file->node->privateNodeData;

        if ((tty->term.c_lflag & ICANON) == ICANON) {
            while (TRUE) {
                for (int i = 0; i < tty->lineBufferIndex; ++i) {
                    char chr = tty->lineBuffer[i];

                    if (chr == '\n') {
                        int bytesToCopy = MIN(tty->lineBufferIndex, size);

                        if (bytesToCopy >= tty->term.c_cc[VMIN]) {
                            tty->lineBufferIndex = 0;
                            memcpy(buffer, tty->lineBuffer, bytesToCopy);

                            return bytesToCopy;
                        }
                    }
                }

                file->thread->state = TS_WAITIO;
                file->thread->state_privateData = tty;
                halt();
            }
        }
        else {
            while (TRUE) {
                uint32 neededSize = tty->term.c_cc[VMIN];
                uint32 bufferLen = FifoBuffer_getSize(tty->keyBuffer);

                if (bufferLen >= neededSize) {
                    int readSize = FifoBuffer_dequeue(tty->keyBuffer, buffer, MIN(bufferLen, size));

                    return readSize;
                }

                file->thread->state = TS_WAITIO;
                file->thread->state_privateData = tty;
                halt();
            }
        }
    }

    return -1;
}

static int32 write(Tty* tty, uint32 size, uint8 *buffer) {
    buffer[size] = '\0';

    Tty_PutText(tty, (const char*)buffer);

    if (gActiveTty == tty) {
        if (gActiveTty->flushScreen) {
            gActiveTty->flushScreen(gActiveTty);
        }
    }

    return size;
}

static int32 tty_write(File *file, uint32 size, uint8 *buffer) {
    return write(file->node->privateNodeData, size, buffer);
}

static void setActiveTty(Tty* tty) {
    gActiveTty = tty;

    Gfx_Fill(0xFFFFFFFF);

    if (tty->flushScreen) {
        tty->flushScreen(tty);
    }

    //Serial_PrintF("line:%d column:%d\r\n", gActiveTty->currentLine, gActiveTty->currentColumn);
}

BOOL isValidTTY(Tty* tty) {
    List_Foreach(n, gTtyList) {
        if (n->data == tty) {
            return TRUE;
        }
    }

    return FALSE;
}

static uint8 getCharacterForScancode(KeyModifier modifier, uint8 scancode) {
    //return gKeyboardLayout[scancode];
    if ((modifier & KM_LeftShift) == KM_LeftShift || (modifier & KM_RightShift) == KM_RightShift) {
        return gKeyShiftMap[scancode];
    }

    return gKeyMap[scancode];
}

static void applyModifierKeys(KeyModifier modifier, uint8 scancode) {
    if ((modifier & KM_Ctrl) == KM_Ctrl) {
        int ttyIndex = scancode - KEY_F1;
        //printkf("TTY:%d\n", ttyIndex);
        int ttyCount = List_GetCount(gTtyList);
        if (ttyIndex >= 0 && ttyIndex < ttyCount) {
            int i = 0;
            List_Foreach(n, gTtyList) {
                if (ttyIndex == i) {
                    setActiveTty(n->data);
                    break;
                }
                ++i;
            }
        }
    }
}

static void processScancode(uint8 scancode) {
    uint8 lastBit = scancode & 0x80;

    scancode &= 0x7F;

    if (lastBit) {
        //key release

        switch (scancode) {
        case KEY_LEFTSHIFT:
            gKeyModifier &= ~KM_LeftShift;
            break;
        case KEY_RIGHTSHIFT:
            gKeyModifier &= ~KM_RightShift;
            break;
        case KEY_CTRL:
            gKeyModifier &= ~KM_Ctrl;
            break;
        case KEY_ALT:
            gKeyModifier &= ~KM_Alt;
            break;
        }

        //printkf("released: %x (%d)\n", scancode, scancode);
    }
    else {
        //key pressed

        switch (scancode) {
        case KEY_LEFTSHIFT:
            gKeyModifier |= KM_LeftShift;
            break;
        case KEY_RIGHTSHIFT:
            gKeyModifier |= KM_RightShift;
            break;
        case KEY_CTRL:
            gKeyModifier |= KM_Ctrl;
            break;
        case KEY_ALT:
            gKeyModifier |= KM_Alt;
            break;
        }

        //printkf("pressed: %x (%d)\n", scancode, scancode);

        applyModifierKeys(gKeyModifier, scancode);
    }
}