| 1 | # Copyright (c) 2001, Stanford University
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| 2 | # All rights reserved.
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| 3 | #
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| 4 | # See the file LICENSE.txt for information on redistributing this software.
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| 5 |
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| 6 | from __future__ import print_function
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| 7 | import sys
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| 8 |
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| 9 | import apiutil
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| 10 |
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| 11 |
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| 12 | apiutil.CopyrightC()
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| 13 |
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| 14 | print("""/* DO NOT EDIT! THIS CODE IS AUTOGENERATED BY unpack.py */
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| 15 |
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| 16 | #include "unpacker.h"
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| 17 | #include "cr_opcodes.h"
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| 18 | #include "cr_error.h"
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| 19 | #include "cr_mem.h"
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| 20 | #include "cr_spu.h"
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| 21 | #include "unpack_extend.h"
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| 22 | #include <stdio.h>
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| 23 | #include <memory.h>
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| 24 |
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| 25 | #include <iprt/cdefs.h>
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| 26 |
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| 27 | DECLEXPORT(const unsigned char *) cr_unpackData = NULL;
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| 28 | DECLEXPORT(const unsigned char *) cr_unpackDataEnd = NULL;
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| 29 | SPUDispatchTable cr_unpackDispatch;
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| 30 |
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| 31 | static void crUnpackExtend(void);
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| 32 | static void crUnpackExtendDbg(void);
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| 33 |
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| 34 | #if 0 //def DEBUG_misha
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| 35 | //# define CR_UNPACK_DEBUG_OPCODES
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| 36 | # define CR_UNPACK_DEBUG_LAST_OPCODES
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| 37 | # define CR_UNPACK_DEBUG_PREV_OPCODES
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| 38 | #endif
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| 39 |
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| 40 | #ifdef CR_UNPACK_DEBUG_PREV_OPCODES
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| 41 | static GLenum g_VBoxDbgCrPrevOpcode = 0;
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| 42 | static GLenum g_VBoxDbgCrPrevExtendOpcode = 0;
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| 43 | #endif
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| 44 | """)
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| 45 |
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| 46 | nodebug_opcodes = [
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| 47 | "CR_MULTITEXCOORD2FARB_OPCODE",
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| 48 | "CR_VERTEX3F_OPCODE",
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| 49 | "CR_NORMAL3F_OPCODE",
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| 50 | "CR_COLOR4UB_OPCODE",
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| 51 | "CR_LOADIDENTITY_OPCODE",
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| 52 | "CR_MATRIXMODE_OPCODE",
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| 53 | "CR_LOADMATRIXF_OPCODE",
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| 54 | "CR_DISABLE_OPCODE",
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| 55 | "CR_COLOR4F_OPCODE",
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| 56 | "CR_ENABLE_OPCODE",
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| 57 | "CR_BEGIN_OPCODE",
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| 58 | "CR_END_OPCODE",
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| 59 | "CR_SECONDARYCOLOR3FEXT_OPCODE"
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| 60 | ]
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| 61 |
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| 62 | nodebug_extopcodes = [
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| 63 | "CR_ACTIVETEXTUREARB_EXTEND_OPCODE"
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| 64 | ]
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| 65 |
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| 66 | #
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| 67 | # Useful functions
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| 68 | #
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| 69 |
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| 70 | def ReadData( offset, arg_type ):
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| 71 | """Emit a READ_DOUBLE or READ_DATA call for pulling a GL function
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| 72 | argument out of the buffer's operand area."""
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| 73 | if arg_type == "GLdouble" or arg_type == "GLclampd":
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| 74 | retval = "READ_DOUBLE(%d)" % offset
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| 75 | else:
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| 76 | retval = "READ_DATA(%d, %s)" % (offset, arg_type)
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| 77 | return retval
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| 78 |
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| 79 |
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| 80 | def FindReturnPointer( return_type, params ):
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| 81 | """For GL functions that return values (either as the return value or
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| 82 | through a pointer parameter) emit a SET_RETURN_PTR call."""
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| 83 | arg_len = apiutil.PacketLength( params )
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| 84 | if (return_type != 'void'):
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| 85 | print('\tSET_RETURN_PTR(%d);' % (arg_len + 8)) # extended opcode plus packet length
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| 86 | else:
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| 87 | paramList = [ ('foo', 'void *', 0) ]
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| 88 | print('\tSET_RETURN_PTR(%d);' % (arg_len + 8 - apiutil.PacketLength(paramList)))
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| 89 |
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| 90 |
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| 91 | def FindWritebackPointer( return_type, params ):
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| 92 | """Emit a SET_WRITEBACK_PTR call."""
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| 93 | arg_len = apiutil.PacketLength( params )
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| 94 | if return_type != 'void':
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| 95 | paramList = [ ('foo', 'void *', 0) ]
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| 96 | arg_len += apiutil.PacketLength( paramList )
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| 97 |
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| 98 | print('\tSET_WRITEBACK_PTR(%d);' % (arg_len + 8)) # extended opcode plus packet length
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| 99 |
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| 100 |
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| 101 | def MakeNormalCall( return_type, func_name, params, counter_init = 0 ):
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| 102 | counter = counter_init
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| 103 | copy_of_params = params[:]
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| 104 |
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| 105 | for i in range( 0, len(params) ):
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| 106 | (name, type, vecSize) = params[i]
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| 107 | if apiutil.IsPointer(copy_of_params[i][1]):
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| 108 | params[i] = ('NULL', type, vecSize)
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| 109 | copy_of_params[i] = (copy_of_params[i][0], 'void', 0)
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| 110 | if not "get" in apiutil.Properties(func_name):
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| 111 | print('\tcrError( "%s needs to be special cased!" );' % func_name)
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| 112 | else:
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| 113 | print("\t%s %s = %s;" % ( copy_of_params[i][1], name, ReadData( counter, copy_of_params[i][1] ) ))
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| 114 | counter += apiutil.sizeof(copy_of_params[i][1])
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| 115 |
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| 116 | if ("get" in apiutil.Properties(func_name)):
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| 117 | FindReturnPointer( return_type, params )
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| 118 | FindWritebackPointer( return_type, params )
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| 119 |
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| 120 | if return_type != "void":
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| 121 | print("\t(void)", end=" ")
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| 122 | else:
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| 123 | print("\t", end="")
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| 124 | print("cr_unpackDispatch.%s(%s);" % (func_name, apiutil.MakeCallString(params)))
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| 125 |
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| 126 |
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| 127 | def MakeVectorCall( return_type, func_name, arg_type ):
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| 128 | """Convert a call like glVertex3f to glVertex3fv."""
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| 129 | vec_func = apiutil.VectorFunction(func_name)
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| 130 | params = apiutil.Parameters(vec_func)
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| 131 | assert len(params) == 1
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| 132 | (arg_name, vecType, vecSize) = params[0]
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| 133 |
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| 134 | if arg_type == "GLdouble" or arg_type == "GLclampd":
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| 135 | print("#ifdef CR_UNALIGNED_ACCESS_OKAY")
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| 136 | print("\tcr_unpackDispatch.%s((%s) cr_unpackData);" % (vec_func, vecType))
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| 137 | print("#else")
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| 138 | for index in range(0, vecSize):
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| 139 | print("\tGLdouble v" + repr(index) + " = READ_DOUBLE(" + repr(index * 8) + ");")
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| 140 | if return_type != "void":
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| 141 | print("\t(void) cr_unpackDispatch.%s(" % func_name, end="")
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| 142 | else:
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| 143 | print("\tcr_unpackDispatch.%s(" % func_name, end="")
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| 144 | for index in range(0, vecSize):
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| 145 | print("v" + repr(index), end="")
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| 146 | if index != vecSize - 1:
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| 147 | print(",", end=" ")
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| 148 | print(");")
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| 149 | print("#endif")
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| 150 | else:
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| 151 | print("\tcr_unpackDispatch.%s((%s) cr_unpackData);" % (vec_func, vecType))
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| 152 |
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| 153 |
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| 154 |
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| 155 | keys = apiutil.GetDispatchedFunctions(sys.argv[1]+"/APIspec.txt")
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| 156 |
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| 157 |
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| 158 | #
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| 159 | # Generate unpack functions for all the simple functions.
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| 160 | #
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| 161 | for func_name in keys:
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| 162 | if (not "pack" in apiutil.ChromiumProps(func_name) or
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| 163 | apiutil.FindSpecial( "unpacker", func_name )):
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| 164 | continue
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| 165 |
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| 166 | params = apiutil.Parameters(func_name)
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| 167 | return_type = apiutil.ReturnType(func_name)
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| 168 |
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| 169 | print("static void crUnpack%s(void)" % func_name)
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| 170 | print("{")
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| 171 |
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| 172 | # Verify that the provided buffer length is what we expect.
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| 173 | packet_length = apiutil.PacketLength( params )
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| 174 | if packet_length > 0:
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| 175 | print("\tif(!DATA_POINTER_CHECK(%d))" % packet_length);
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| 176 | print("\t{");
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| 177 | print("\t\tcrError(\"crUnpack%s: parameters out of range\");" % func_name);
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| 178 | print("\t\treturn;");
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| 179 | print("\t}");
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| 180 |
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| 181 | vector_func = apiutil.VectorFunction(func_name)
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| 182 | if (vector_func and len(apiutil.Parameters(vector_func)) == 1):
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| 183 | MakeVectorCall( return_type, func_name, params[0][1] )
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| 184 | else:
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| 185 | MakeNormalCall( return_type, func_name, params )
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| 186 | if packet_length == 0:
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| 187 | print("\tINCR_DATA_PTR_NO_ARGS( );")
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| 188 | else:
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| 189 | print("\tINCR_DATA_PTR(%d);" % packet_length)
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| 190 | print("}\n")
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| 191 |
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| 192 |
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| 193 | #
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| 194 | # Emit some code
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| 195 | #
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| 196 | print("""
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| 197 | typedef struct __dispatchNode {
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| 198 | const unsigned char *unpackData;
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| 199 | struct __dispatchNode *next;
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| 200 | } DispatchNode;
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| 201 |
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| 202 | static DispatchNode *unpackStack = NULL;
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| 203 |
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| 204 | static SPUDispatchTable *cr_lastDispatch = NULL;
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| 205 |
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| 206 | void crUnpackPush(void)
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| 207 | {
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| 208 | DispatchNode *node = (DispatchNode*)crAlloc( sizeof( *node ) );
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| 209 | node->next = unpackStack;
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| 210 | unpackStack = node;
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| 211 | node->unpackData = cr_unpackData;
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| 212 | }
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| 213 |
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| 214 | void crUnpackPop(void)
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| 215 | {
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| 216 | DispatchNode *node = unpackStack;
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| 217 |
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| 218 | if (!node)
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| 219 | {
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| 220 | crError( "crUnpackPop called with an empty stack!" );
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| 221 | }
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| 222 | unpackStack = node->next;
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| 223 | cr_unpackData = node->unpackData;
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| 224 | crFree( node );
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| 225 | }
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| 226 |
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| 227 | CR_UNPACK_BUFFER_TYPE crUnpackGetBufferType(const void *opcodes, unsigned int num_opcodes)
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| 228 | {
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| 229 | const uint8_t *pu8Codes = (const uint8_t *)opcodes;
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| 230 |
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| 231 | uint8_t first;
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| 232 | uint8_t last;
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| 233 |
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| 234 | if (!num_opcodes)
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| 235 | return CR_UNPACK_BUFFER_TYPE_GENERIC;
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| 236 |
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| 237 | first = pu8Codes[0];
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| 238 | last = pu8Codes[1-(int)num_opcodes];
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| 239 |
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| 240 | switch (last)
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| 241 | {
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| 242 | case CR_CMDBLOCKFLUSH_OPCODE:
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| 243 | return CR_UNPACK_BUFFER_TYPE_CMDBLOCK_FLUSH;
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| 244 | case CR_CMDBLOCKEND_OPCODE:
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| 245 | return (first == CR_CMDBLOCKBEGIN_OPCODE) ? CR_UNPACK_BUFFER_TYPE_GENERIC : CR_UNPACK_BUFFER_TYPE_CMDBLOCK_END;
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| 246 | default:
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| 247 | return (first != CR_CMDBLOCKBEGIN_OPCODE) ? CR_UNPACK_BUFFER_TYPE_GENERIC : CR_UNPACK_BUFFER_TYPE_CMDBLOCK_BEGIN;
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| 248 | }
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| 249 | }
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| 250 |
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| 251 | void crUnpack( const void *data, const void *data_end, const void *opcodes,
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| 252 | unsigned int num_opcodes, SPUDispatchTable *table )
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| 253 | {
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| 254 | unsigned int i;
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| 255 | const unsigned char *unpack_opcodes;
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| 256 | if (table != cr_lastDispatch)
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| 257 | {
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| 258 | crSPUCopyDispatchTable( &cr_unpackDispatch, table );
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| 259 | cr_lastDispatch = table;
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| 260 | }
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| 261 |
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| 262 | unpack_opcodes = (const unsigned char *)opcodes;
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| 263 | cr_unpackData = (const unsigned char *)data;
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| 264 | cr_unpackDataEnd = (const unsigned char *)data_end;
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| 265 |
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| 266 | #if defined(CR_UNPACK_DEBUG_OPCODES) || defined(CR_UNPACK_DEBUG_LAST_OPCODES)
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| 267 | crDebug("crUnpack: %d opcodes", num_opcodes);
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| 268 | #endif
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| 269 |
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| 270 | for (i = 0; i < num_opcodes; i++)
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| 271 | {
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| 272 |
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| 273 | CRDBGPTR_CHECKZ(writeback_ptr);
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| 274 | CRDBGPTR_CHECKZ(return_ptr);
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| 275 |
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| 276 | /*crDebug(\"Unpacking opcode \%d\", *unpack_opcodes);*/
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| 277 | #ifdef CR_UNPACK_DEBUG_PREV_OPCODES
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| 278 | g_VBoxDbgCrPrevOpcode = *unpack_opcodes;
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| 279 | #endif
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| 280 | switch( *unpack_opcodes )
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| 281 | {""")
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| 282 |
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| 283 | #
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| 284 | # Emit switch cases for all unextended opcodes
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| 285 | #
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| 286 | for func_name in keys:
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| 287 | if "pack" in apiutil.ChromiumProps(func_name):
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| 288 | print('\t\t\tcase %s:' % apiutil.OpcodeName( func_name ))
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| 289 | if not apiutil.OpcodeName(func_name) in nodebug_opcodes:
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| 290 | print("""
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| 291 | #ifdef CR_UNPACK_DEBUG_LAST_OPCODES
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| 292 | if (i==(num_opcodes-1))
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| 293 | #endif
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| 294 | #if defined(CR_UNPACK_DEBUG_OPCODES) || defined(CR_UNPACK_DEBUG_LAST_OPCODES)
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| 295 | crDebug("Unpack: %s");
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| 296 | #endif """ % apiutil.OpcodeName(func_name))
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| 297 | print('\t\t\t\tcrUnpack%s(); \n\t\t\t\tbreak;' % func_name)
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| 298 |
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| 299 | print("""
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| 300 | case CR_EXTEND_OPCODE:
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| 301 | #ifdef CR_UNPACK_DEBUG_OPCODES
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| 302 | crUnpackExtendDbg();
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| 303 | #else
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| 304 | # ifdef CR_UNPACK_DEBUG_LAST_OPCODES
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| 305 | if (i==(num_opcodes-1)) crUnpackExtendDbg();
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| 306 | else
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| 307 | # endif
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| 308 | crUnpackExtend();
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| 309 | #endif
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| 310 | break;
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| 311 | case CR_CMDBLOCKBEGIN_OPCODE:
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| 312 | case CR_CMDBLOCKEND_OPCODE:
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| 313 | case CR_CMDBLOCKFLUSH_OPCODE:
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| 314 | case CR_NOP_OPCODE:
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| 315 | INCR_DATA_PTR_NO_ARGS( );
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| 316 | break;
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| 317 | default:
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| 318 | crError( "Unknown opcode: %d", *unpack_opcodes );
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| 319 | break;
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| 320 | }
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| 321 |
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| 322 | CRDBGPTR_CHECKZ(writeback_ptr);
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| 323 | CRDBGPTR_CHECKZ(return_ptr);
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| 324 |
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| 325 | unpack_opcodes--;
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| 326 | }
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| 327 | }""")
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| 328 |
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| 329 |
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| 330 | #
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| 331 | # Emit unpack functions for extended opcodes, non-special functions only.
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| 332 | #
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| 333 | for func_name in keys:
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| 334 | if ("extpack" in apiutil.ChromiumProps(func_name)
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| 335 | and not apiutil.FindSpecial("unpacker", func_name)):
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| 336 | return_type = apiutil.ReturnType(func_name)
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| 337 | params = apiutil.Parameters(func_name)
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| 338 | print('static void crUnpackExtend%s(void)' % func_name)
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| 339 | print('{')
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| 340 |
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| 341 | # Verify that the provided buffer length is what we expect.
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| 342 | packet_length = apiutil.PacketLength( params )
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| 343 | if packet_length > 0:
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| 344 | print("\tif(!DATA_POINTER_CHECK(%d))" % packet_length);
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| 345 | print("\t{");
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| 346 | print("\t\tcrError(\"crUnpack%s: parameters out of range\");" % func_name);
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| 347 | print("\t\treturn;");
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| 348 | print("\t}");
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| 349 |
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| 350 | MakeNormalCall( return_type, func_name, params, 8 )
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| 351 | print('}\n')
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| 352 |
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| 353 | print('static void crUnpackExtend(void)')
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| 354 | print('{')
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| 355 | print('\tGLenum extend_opcode = %s;' % ReadData( 4, 'GLenum' ))
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| 356 | print('')
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| 357 | print('#ifdef CR_UNPACK_DEBUG_PREV_OPCODES')
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| 358 | print('\tg_VBoxDbgCrPrevExtendOpcode = extend_opcode;')
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| 359 | print('#endif')
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| 360 | print('')
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| 361 | print('\t/*crDebug(\"Unpacking extended opcode \%d", extend_opcode);*/')
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| 362 | print('\tswitch( extend_opcode )')
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| 363 | print('\t{')
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| 364 |
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| 365 |
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| 366 | #
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| 367 | # Emit switch statement for extended opcodes
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| 368 | #
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| 369 | for func_name in keys:
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| 370 | if "extpack" in apiutil.ChromiumProps(func_name):
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| 371 | print('\t\tcase %s:' % apiutil.ExtendedOpcodeName( func_name ))
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| 372 | # print('\t\t\t\tcrDebug("Unpack: %s");' % apiutil.ExtendedOpcodeName( func_name )))
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| 373 | print('\t\t\tcrUnpackExtend%s( );' % func_name)
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| 374 | print('\t\t\tbreak;')
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| 375 |
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| 376 | print(""" default:
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| 377 | crError( "Unknown extended opcode: %d", (int) extend_opcode );
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| 378 | break;
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| 379 | }
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| 380 | INCR_VAR_PTR();
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| 381 | }""")
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| 382 |
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| 383 | print('static void crUnpackExtendDbg(void)')
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| 384 | print('{')
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| 385 | print('\tGLenum extend_opcode = %s;' % ReadData( 4, 'GLenum' ))
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| 386 | print('')
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| 387 | print('#ifdef CR_UNPACK_DEBUG_PREV_OPCODES')
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| 388 | print('\tg_VBoxDbgCrPrevExtendOpcode = extend_opcode;')
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| 389 | print('#endif')
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| 390 | print('')
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| 391 | print('\t/*crDebug(\"Unpacking extended opcode \%d", extend_opcode);*/')
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| 392 | print('\tswitch( extend_opcode )')
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|---|
| 393 | print('\t{')
|
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| 394 |
|
|---|
| 395 |
|
|---|
| 396 | #
|
|---|
| 397 | # Emit switch statement for extended opcodes
|
|---|
| 398 | #
|
|---|
| 399 | for func_name in keys:
|
|---|
| 400 | if "extpack" in apiutil.ChromiumProps(func_name):
|
|---|
| 401 | print('\t\tcase %s:' % apiutil.ExtendedOpcodeName( func_name ))
|
|---|
| 402 | if not apiutil.ExtendedOpcodeName(func_name) in nodebug_extopcodes:
|
|---|
| 403 | print('\t\t\tcrDebug("Unpack: %s");' % apiutil.ExtendedOpcodeName( func_name ))
|
|---|
| 404 | print('\t\t\tcrUnpackExtend%s( );' % func_name)
|
|---|
| 405 | print('\t\t\tbreak;')
|
|---|
| 406 |
|
|---|
| 407 | print(""" default:
|
|---|
| 408 | crError( "Unknown extended opcode: %d", (int) extend_opcode );
|
|---|
| 409 | break;
|
|---|
| 410 | }
|
|---|
| 411 | INCR_VAR_PTR();
|
|---|
| 412 | }""")
|
|---|
