static char *
PrExpandMacros (
char *Line)
{
char *Token;
char *ReplaceString;
PR_DEFINE_INFO *DefineInfo;
ACPI_SIZE TokenOffset;
char *Next;
int OffsetAdjust;
strcpy (Gbl_ExpressionTokenBuffer, Gbl_CurrentLineBuffer);
Token = PrGetNextToken (Gbl_ExpressionTokenBuffer, PR_EXPR_SEPARATORS, &Next);
OffsetAdjust = 0;
while (Token)
{
DefineInfo = PrMatchDefine (Token);
if (DefineInfo)
{
if (DefineInfo->Body)
{
/* This is a macro. TBD: Is this allowed? */
DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
"Matched Macro: %s->%s\n",
Gbl_CurrentLineNumber, DefineInfo->Identifier,
DefineInfo->Replacement);
PrDoMacroInvocation (Gbl_ExpressionTokenBuffer, Token,
DefineInfo, &Next);
}
else
{
ReplaceString = DefineInfo->Replacement;
/* Replace the name in the original line buffer */
TokenOffset = Token - Gbl_ExpressionTokenBuffer + OffsetAdjust;
PrReplaceData (
&Gbl_CurrentLineBuffer[TokenOffset], strlen (Token),
ReplaceString, strlen (ReplaceString));
/* Adjust for length difference between old and new name length */
OffsetAdjust += strlen (ReplaceString) - strlen (Token);
DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
"Matched #define within expression: %s->%s\n",
Gbl_CurrentLineNumber, Token,
*ReplaceString ? ReplaceString : "(NULL STRING)");
}
}
Token = PrGetNextToken (NULL, PR_EXPR_SEPARATORS, &Next);
}
return (Line);
}
void
PrDoMacroInvocation (
char *TokenBuffer,
char *MacroStart,
PR_DEFINE_INFO *DefineInfo,
char **Next)
{
PR_MACRO_ARG *Args;
char *Token = NULL;
UINT32 TokenOffset;
UINT32 Length;
UINT32 i;
/* Take a copy of the macro body for expansion */
strcpy (Gbl_MacroTokenBuffer, DefineInfo->Body);
/* Replace each argument within the prototype body */
Args = DefineInfo->Args;
if (!Args->Name)
{
/* This macro has no arguments */
Token = PrGetNextToken (NULL, PR_MACRO_ARGUMENTS, Next);
if (!Token)
{
goto BadInvocation;
}
TokenOffset = (MacroStart - TokenBuffer);
Length = Token - MacroStart + strlen (Token) + 1;
PrReplaceData (
&Gbl_CurrentLineBuffer[TokenOffset], Length,
Gbl_MacroTokenBuffer, strlen (Gbl_MacroTokenBuffer));
return;
}
while (Args->Name)
{
/* Get the next argument from macro invocation */
Token = PrGetNextToken (NULL, PR_MACRO_SEPARATORS, Next);
if (!Token)
{
goto BadInvocation;
}
/* Replace all instances of this argument */
for (i = 0; i < Args->UseCount; i++)
{
/* Offset zero indicates "arg not used" */
/* TBD: Not really needed now, with UseCount available */
if (Args->Offset[i] == 0)
{
break;
}
PrReplaceData (
&Gbl_MacroTokenBuffer[Args->Offset[i]], strlen (Args->Name),
Token, strlen (Token));
DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
"ExpandArg: %s \n",
Gbl_CurrentLineNumber, Gbl_MacroTokenBuffer);
}
Args++;
}
/* TBD: need to make sure macro was not invoked with too many arguments */
if (!Token)
{
return;
}
/* Replace the entire macro invocation with the expanded macro */
TokenOffset = (MacroStart - TokenBuffer);
Length = Token - MacroStart + strlen (Token) + 1;
PrReplaceData (
&Gbl_CurrentLineBuffer[TokenOffset], Length,
Gbl_MacroTokenBuffer, strlen (Gbl_MacroTokenBuffer));
return;
BadInvocation:
PrError (ASL_ERROR, ASL_MSG_INVALID_INVOCATION,
THIS_TOKEN_OFFSET (MacroStart));
DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
"Bad macro invocation: %s \n",
Gbl_CurrentLineNumber, Gbl_MacroTokenBuffer);
return;
}
static void
PrPreprocessInputFile (
void)
{
UINT32 Status;
char *Token;
char *ReplaceString;
PR_DEFINE_INFO *DefineInfo;
ACPI_SIZE TokenOffset;
char *Next;
int OffsetAdjust;
PrGetNextLineInit ();
/* Scan source line-by-line and process directives. Then write the .i file */
while ((Status = PrGetNextLine (Gbl_Files[ASL_FILE_INPUT].Handle)) != ASL_EOF)
{
Gbl_CurrentLineNumber++;
Gbl_LogicalLineNumber++;
if (Status == ASL_IGNORE_LINE)
{
goto WriteEntireLine;
}
/* Need a copy of the input line for strok() */
strcpy (Gbl_MainTokenBuffer, Gbl_CurrentLineBuffer);
Token = PrGetNextToken (Gbl_MainTokenBuffer, PR_TOKEN_SEPARATORS, &Next);
OffsetAdjust = 0;
/* All preprocessor directives must begin with '#' */
if (Token && (*Token == '#'))
{
if (strlen (Token) == 1)
{
Token = PrGetNextToken (NULL, PR_TOKEN_SEPARATORS, &Next);
}
else
{
Token++; /* Skip leading # */
}
/* Execute the directive, do not write line to output file */
PrDoDirective (Token, &Next);
continue;
}
/*
* If we are currently within the part of an IF/ELSE block that is
* FALSE, ignore the line and do not write it to the output file.
* This continues until an #else or #endif is encountered.
*/
if (Gbl_IgnoringThisCodeBlock)
{
continue;
}
/* Match and replace all #defined names within this source line */
while (Token)
{
DefineInfo = PrMatchDefine (Token);
if (DefineInfo)
{
if (DefineInfo->Body)
{
/* This is a macro */
DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
"Matched Macro: %s->%s\n",
Gbl_CurrentLineNumber, DefineInfo->Identifier,
DefineInfo->Replacement);
PrDoMacroInvocation (Gbl_MainTokenBuffer, Token,
DefineInfo, &Next);
}
else
{
ReplaceString = DefineInfo->Replacement;
/* Replace the name in the original line buffer */
TokenOffset = Token - Gbl_MainTokenBuffer + OffsetAdjust;
PrReplaceData (
&Gbl_CurrentLineBuffer[TokenOffset], strlen (Token),
ReplaceString, strlen (ReplaceString));
/* Adjust for length difference between old and new name length */
OffsetAdjust += strlen (ReplaceString) - strlen (Token);
DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
"Matched #define: %s->%s\n",
Gbl_CurrentLineNumber, Token,
*ReplaceString ? ReplaceString : "(NULL STRING)");
}
}
Token = PrGetNextToken (NULL, PR_TOKEN_SEPARATORS, &Next);
}
Gbl_PreprocessorLineNumber++;
WriteEntireLine:
/*
* Now we can write the possibly modified source line to the
* preprocessor file(s).
*/
FlWriteFile (ASL_FILE_PREPROCESSOR, Gbl_CurrentLineBuffer,
strlen (Gbl_CurrentLineBuffer));
}
}
static void
PrPreprocessInputFile (
void)
{
UINT32 Offset;
char *Token;
char *ReplaceString;
PR_DEFINE_INFO *DefineInfo;
ACPI_SIZE TokenOffset;
BOOLEAN IgnoringThisCodeBlock = FALSE;
char *Next;
int OffsetAdjust;
/* Scan line-by-line. Comments and blank lines are skipped by this function */
while ((Offset = DtGetNextLine (Gbl_Files[ASL_FILE_INPUT].Handle)) != ASL_EOF)
{
/* Need a copy of the input line for strok() */
strcpy (Gbl_MainTokenBuffer, Gbl_CurrentLineBuffer);
Token = PrGetNextToken (Gbl_MainTokenBuffer, PR_TOKEN_SEPARATORS, &Next);
OffsetAdjust = 0;
/* All preprocessor directives must begin with '#' */
if (Token && (*Token == '#'))
{
if (strlen (Token) == 1)
{
Token = PrGetNextToken (NULL, PR_TOKEN_SEPARATORS, &Next);
}
else
{
Token++; /* Skip leading # */
}
/* Execute the directive, do not write line to output file */
PrDoDirective (Token, &Next, &IgnoringThisCodeBlock);
continue;
}
/*
* If we are currently within the part of an IF/ELSE block that is
* FALSE, ignore the line and do not write it to the output file.
* This continues until an #else or #endif is encountered.
*/
if (IgnoringThisCodeBlock == TRUE)
{
continue;
}
/* Match and replace all #defined names within this source line */
while (Token)
{
DefineInfo = PrMatchDefine (Token);
if (DefineInfo)
{
if (DefineInfo->Body)
{
/* This is a macro */
DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
"Matched Macro: %s->%s\n",
Gbl_CurrentLineNumber, DefineInfo->Identifier,
DefineInfo->Replacement);
PrDoMacroInvocation (Gbl_MainTokenBuffer, Token,
DefineInfo, &Next);
}
else
{
ReplaceString = DefineInfo->Replacement;
/* Replace the name in the original line buffer */
TokenOffset = Token - Gbl_MainTokenBuffer + OffsetAdjust;
PrReplaceData (
&Gbl_CurrentLineBuffer[TokenOffset], strlen (Token),
ReplaceString, strlen (ReplaceString));
/* Adjust for length difference between old and new name length */
OffsetAdjust += strlen (ReplaceString) - strlen (Token);
DbgPrint (ASL_DEBUG_OUTPUT, PR_PREFIX_ID
"Matched #define: %s->%s\n",
Gbl_CurrentLineNumber, Token,
*ReplaceString ? ReplaceString : "(NULL STRING)");
}
}
Token = PrGetNextToken (NULL, PR_TOKEN_SEPARATORS, &Next);
}
#if 0
/* Line prefix */
FlPrintFile (ASL_FILE_PREPROCESSOR, "/* %14s %.5u i:%.5u */ ",
Gbl_Files[ASL_FILE_INPUT].Filename,
Gbl_CurrentLineNumber, Gbl_PreprocessorLineNumber);
#endif
/*
* Emit a #line directive if necessary, to keep the line numbers in
* the (.i) file synchronized with the original source code file, so
* that the correct line number appears in any error messages
* generated by the actual compiler.
*/
if (Gbl_CurrentLineNumber > (Gbl_PreviousLineNumber + 1))
{
FlPrintFile (ASL_FILE_PREPROCESSOR, "#line %u\n",
Gbl_CurrentLineNumber);
}
Gbl_PreviousLineNumber = Gbl_CurrentLineNumber;
Gbl_PreprocessorLineNumber++;
/*
* Now we can write the possibly modified source line to the
* preprocessor (.i) file
*/
FlWriteFile (ASL_FILE_PREPROCESSOR, Gbl_CurrentLineBuffer,
strlen (Gbl_CurrentLineBuffer));
}
}
