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Diffstat (limited to 'branches/1.0/tinySIGCOMP/src/tcomp_udvm.operands.c')
-rw-r--r-- | branches/1.0/tinySIGCOMP/src/tcomp_udvm.operands.c | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/branches/1.0/tinySIGCOMP/src/tcomp_udvm.operands.c b/branches/1.0/tinySIGCOMP/src/tcomp_udvm.operands.c deleted file mode 100644 index 8cee95a..0000000 --- a/branches/1.0/tinySIGCOMP/src/tcomp_udvm.operands.c +++ /dev/null @@ -1,261 +0,0 @@ -/* -* Copyright (C) 2009-2010 Mamadou Diop. -* -* Contact: Mamadou Diop <diopmamadou(at)doubango.org> -* -* This file is part of Open Source Doubango Framework. -* -* DOUBANGO is free software: you can redistribute it and/or modify -* it under the terms of the GNU General Public License as published by -* the Free Software Foundation, either version 3 of the License, or -* (at your option) any later version. -* -* DOUBANGO is distributed in the hope that it will be useful, -* but WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -* GNU General Public License for more details. -* -* You should have received a copy of the GNU General Public License -* along with DOUBANGO. -* -*/ - -/**@file tcomp_udvm.operands.c - * @brief SigComp UDVM machine (Operands). - * - * @author Mamadou Diop <diopmamadou(at)yahoo.fr> - * - * @date Created: Sat Nov 8 16:54:58 2009 mdiop - */ -#include "tcomp_udvm.h" - -#include "tsk_debug.h" - -#include <math.h> - -/** -literal (#)<br> -<table> -<tr> <td>Bytecode</td> <td>Operand value</td> <td>Range</td></tr> -<tr> <td>0nnnnnnn</td> <td>N</td> <td>0 - 127</td></tr> -<tr> <td>10nnnnnn nnnnnnnn</td> <td>N</td> <td>0 - 16383</td></tr> -<tr> <td>11000000 nnnnnnnn nnnnnnnn</td> <td>N</td> <td>0 - 65535</td></tr> -</table> -*/ -uint16_t tcomp_udvm_opget_literal_param(tcomp_udvm_t *udvm) -{ - uint16_t result = 0; - const uint8_t* memory_ptr = TCOMP_UDVM_GET_BUFFER_AT(udvm->executionPointer); - - switch( *memory_ptr & 0xc0) // 2 first bits - { - case 0x00: // 0nnnnnnn N 0 - 127 - case 0x40: // 0nnnnnnn N 0 - 127 - { - result = *(memory_ptr); - udvm->executionPointer++; - } - break; - - case 0x80: // 10nnnnnn nnnnnnnn N 0 - 16383 - { - result = TSK_BINARY_GET_2BYTES(memory_ptr)&0x3fff; // All except 2 first bits - udvm->executionPointer+=2; - } - break; - - case 0xc0: // 11000000 nnnnnnnn nnnnnnnn N 0 - 65535 - { - result = TSK_BINARY_GET_2BYTES((memory_ptr+1)); - udvm->executionPointer+=3; - } - break; - - default: - { - TSK_DEBUG_ERROR("Invalide opcode: %u", *memory_ptr); - tcomp_udvm_createNackInfo2(udvm, NACK_INVALID_OPERAND); - } - break; - } - return result; -} - -/** -reference ($)<br> -<table> -<tr><td>Bytecode</td> <td>Operand value</td> <td>Range</td></tr> -<tr><td>0nnnnnnn</td> <td>memory[2 * N]</td> <td>0 - 65535</td></tr> -<tr><td>10nnnnnn nnnnnnnn </td> <td>memory[2 * N]</td> <td>0 - 65535</td></tr> -<tr><td>11000000 nnnnnnnn nnnnnnnn</td> <td>memory[N]</td> <td>0 - 65535</td></tr> -</table> -*/ -uint16_t tcomp_udvm_opget_reference_param(tcomp_udvm_t *udvm) -{ - const uint8_t* memory_ptr = TCOMP_UDVM_GET_BUFFER_AT(udvm->executionPointer); - uint16_t result = 0; - - switch( *memory_ptr & 0xc0) // 2 first bits - { - case 0x00: // 0nnnnnnn memory[2 * N] 0 - 65535 - case 0x40: // 0nnnnnnn memory[2 * N] 0 - 65535 - { - uint8_t N = (*(memory_ptr) & 0x7f); // no effect first bit is already nil - result = 2*N; - udvm->executionPointer++; - } - break; - - case 0x80: // 10nnnnnn nnnnnnnn memory[2 * N] 0 - 65535 - { - uint16_t N = (TSK_BINARY_GET_2BYTES(memory_ptr) & 0x3fff); - result = 2*N; - udvm->executionPointer+=2; - } - break; - - case 0xc0: // 11000000 nnnnnnnn nnnnnnnn memory[N] 0 - 65535 - { - uint16_t N = TSK_BINARY_GET_2BYTES(memory_ptr+1); - result = N; - udvm->executionPointer+=3; - } - break; - - default: - { - TSK_DEBUG_ERROR("Invalide opcode: %u", *memory_ptr); - tcomp_udvm_createNackInfo2(udvm, NACK_INVALID_OPERAND); - } - break; - } - - return result; -} - -/** -multitype(%)<br> -<table> -<tr><td>Bytecode</td> <td>Operand value</td> <td>Range</td></tr> -<tr><td>00nnnnnn</td> <td>N</td> <td>0 - 63</td></tr> -<tr><td>01nnnnnn</td> <td>memory[2 * N]</td> <td>0 - 65535</td></tr> -<tr><td>1000011n</td> <td>2 ^ (N + 6)</td> <td>64 , 128</td></tr> -<tr><td>10001nnn</td> <td>2 ^ (N + 8)</td> <td>256 , ... , 32768</td></tr> -<tr><td>111nnnnn</td> <td>N + 65504</td> <td>65504 - 65535</td></tr> -<tr><td>1001nnnn nnnnnnnn</td> <td>N + 61440</td> <td>61440 - 65535</td></tr> -<tr><td>101nnnnn nnnnnnnn</td> <td>N</td> <td>0 - 8191</td></tr> -<tr><td>110nnnnn nnnnnnnn</td> <td>memory[N]</td> <td>0 - 65535</td></tr> -<tr><td>10000000 nnnnnnnn nnnnnnnn</td> <td>N</td> <td>0 - 65535</td></tr> -<tr><td>10000001 nnnnnnnn nnnnnnnn</td> <td>memory[N]</td> <td>0 - 65535</td></tr> -</table> -*/ -uint16_t tcomp_udvm_opget_multitype_param(tcomp_udvm_t *udvm) -{ - const uint8_t* memory_ptr = TCOMP_UDVM_GET_BUFFER_AT(udvm->executionPointer); - int8_t index = operand_multitype_indexes[*memory_ptr]; - uint16_t result = 0; - - switch(index) - { - case 1: // 00nnnnnn N 0 - 63 - { - result = *(memory_ptr); - udvm->executionPointer++; - } - break; - - case 2: // 01nnnnnn memory[2 * N] 0 - 65535 - { - uint8_t N = (*(memory_ptr) & 0x3f); - result = TSK_BINARY_GET_2BYTES( TCOMP_UDVM_GET_BUFFER_AT(2*N) ); - udvm->executionPointer++; - } - break; - - case 3: // 1000011n 2 ^ (N + 6) 64 , 128 - { - uint8_t N = (*(memory_ptr) & 0x01); - result = (uint16_t)pow( (double)2, (N + 6) ); - udvm->executionPointer++; - } - break; - - case 4: // 10001nnn 2 ^ (N + 8) 256 , ... , 32768 - { - uint8_t N = (*(memory_ptr) & 0x07); - result = (uint16_t)pow( (double)2, (N + 8) ); - udvm->executionPointer++; - } - break; - - case 5: // 111nnnnn N + 65504 65504 - 65535 - { - result = ((*(memory_ptr) & 0x1f) + 65504 ); - udvm->executionPointer++; - } - break; - - case 6: // 1001nnnn nnnnnnnn N + 61440 61440 - 65535 - { - result = (TSK_BINARY_GET_2BYTES(memory_ptr) & 0x0fff) + 61440; - udvm->executionPointer+=2; - } - break; - - case 7: // 101nnnnn nnnnnnnn N 0 - 8191 - { - result = (TSK_BINARY_GET_2BYTES(memory_ptr) & 0x1fff); - udvm->executionPointer+=2; - } - break; - - case 8: // 110nnnnn nnnnnnnn memory[N] 0 - 65535 - { - uint16_t N = TSK_BINARY_GET_2BYTES(memory_ptr) & 0x1fff; - result = TSK_BINARY_GET_2BYTES( TCOMP_UDVM_GET_BUFFER_AT(N) ); - udvm->executionPointer+=2; - } - break; - - case 9: // 10000000 nnnnnnnn nnnnnnnn N 0 - 65535 - { - result = TSK_BINARY_GET_2BYTES(memory_ptr+1); - udvm->executionPointer+=3; - } - break; - - case 10: // 10000001 nnnnnnnn nnnnnnnn memory[N] 0 - 65535 - { - uint16_t N = TSK_BINARY_GET_2BYTES(memory_ptr+1); - result = TSK_BINARY_GET_2BYTES( TCOMP_UDVM_GET_BUFFER_AT(N) ); - udvm->executionPointer+=3; - } - break; - - default: // -1 - { - TSK_DEBUG_ERROR("Invalide opcode: %u", *memory_ptr); - tcomp_udvm_createNackInfo2(udvm, NACK_INVALID_OPERAND); - } - break; - } - - return result; -} - -/** -address(@) -This operand is decoded as a multitype operand followed by a further step: the memory address -of the UDVM instruction containing the address operand is added to -obtain the correct operand value. So if the operand value from -Figure 10 is D then the actual operand value of an address is -calculated as follows: - - operand_value = (memory_address_of_instruction + D) modulo 2^16 -*/ -uint16_t tcomp_udvm_opget_address_param(tcomp_udvm_t *udvm, uint16_t memory_address_of_instruction) -{ - uint16_t D = tcomp_udvm_opget_multitype_param(udvm); - // (2^16) => 65536; - return ( (memory_address_of_instruction + D)%65536 ); -} |