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PR modula2/114565 progress trace would be useful to isolate ICE for users

Browse Source 
This patch introduces the internal option -fm2-debug-trace= which can
be given a comma separated list of filter terms.  Currently it allows:
all,line,token,quad.  The patch allows users to trace the progress of
cc1gm2 so that source which causes an ICE can be reduced.  Once
PR113836 is complete it is expected that the trace information will be
written to file.

gcc/m2/ChangeLog:

	PR modula2/114565
	* gm2-compiler/M2GenGCC.mod (CodeStatement): Test
	GetDebugTraceQuad before calling DisplayQuad.
	* gm2-compiler/M2LexBuf.mod (NumberIO): Import CardToStr.
	(GetToken): Test GetDebugTraceToken before writing the
	token number or token line.
	* gm2-compiler/M2Options.def (SetDebugTraceQuad): Rename to
	(SetM2DebugTraceFilter): ...this.
	(SetDebugTraceAPI): Remove.
	(GetDebugTraceQuad): New procedure function.
	(GetDebugTraceTree): Ditto.
	(GetDebugTraceToken): Ditto.
	(GetDebugTraceLine): Ditto.
	(GetDebugFunctionLineNumbers): Ditto.
	* gm2-compiler/M2Options.mod (DebugFunctionLineNumbers): New
	boolean variable.
	(DebugTraceQuad): Ditto.
	(DebugTraceTree): Ditto.
	(DebugTraceLine): Ditto.
	(DebugTraceToken): Ditto.
	(errors1): New procedure.
	(SetDebugTraceQuad): Remove.
	(SetM2DebugTraceFilter): New procedure implemented.
	(SetM2DebugTrace): Ditto.
	(GetDebugTraceQuad): Ditto.
	(GetDebugTraceToken ): Ditto.
	(GetDebugTraceLine): Ditto.
	(SetDebugTraceLine): Remove.
	* gm2-compiler/M2Quads.mod (GenQuadOTrash): Test
	GetDebugTraceQuad and call DisplayQuad.
	(GenQuadOTypetok): Ditto.
	* gm2-compiler/SymbolTable.mod: Replace
	DebugFunctionLineNumbers with GetDebugFunctionLineNumbers.
	* gm2-gcc/init.cc (_M2_M2LangDump_init): Add prototype.
	(init_PerCompilationInit): Add call.
	* gm2-gcc/m2misc.cc (m2misc_cerror): New function.
	(m2misc_error): Ditto.
	* gm2-gcc/m2misc.def (error): New procedure.
	(cerror): Ditto.
	* gm2-gcc/m2misc.h (m2misc_cerror): New prototype.
	(m2misc_error): Ditto.
	* gm2-gcc/m2options.h (M2Options_SetDebugTraceQuad): New
	prototype.
	(M2Options_SetDebugTraceAPI): Remove.
	(M2Options_GetDebugTraceToken): New prototype.
	(M2Options_GetDebugTraceLine): Ditto.
	(M2Options_SetDebugFunctionLineNumbers): Ditto.
	(M2Options_GetDebugFunctionLineNumbers): Ditto.
	(M2Options_SetM2DebugTraceFilter): Ditto.
	* gm2-lang.cc (gm2_langhook_init_options): Remove
	OPT_fdebug_trace_quad case.
	Remove OPT_fdebug_trace_api case.
	Add OPT_fm2_debug_trace_ case.
	* lang.opt (fm2-debug-trace): New option.
	(fdebug-trace-api): Remove.
	(fdebug-trace-quad): Remove.
	* m2.flex (m2flex_M2Error): Check s for NULL.
	(skipnewline): New function.
	(consumeLine): Call traceline.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>
This commit is contained in:
Gaius Mulley 2024-04-02 23:47:42 +01:00
parent 871bb5ad2d
commit 1bafa6a3fd
14 changed files with 285 additions and 65 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/m2/gm2-compiler/M2GenGCC.mod
View File

@ -96,8 +96,7 @@ FROM M2MetaError IMPORT MetaErrorT0, MetaErrorT1, MetaErrorT2, MetaErrorT3,
FROM M2Options IMPORT UnboundedByReference, PedanticCast,
VerboseUnbounded, Iso, Pim, DebugBuiltins, WholeProgram,
StrictTypeChecking, AutoInit, cflag, ScaffoldMain,
ScaffoldDynamic, ScaffoldStatic,
DebugTraceQuad, DebugTraceAPI ;
ScaffoldDynamic, ScaffoldStatic, GetDebugTraceQuad ;
FROM M2Printf IMPORT printf0, printf1, printf2, printf4 ;
FROM M2Quiet IMPORT qprintf0 ;
@ -459,7 +458,7 @@ BEGIN
END ;
location := TokenToLocation (CurrentQuadToken) ;
CheckReferenced(q, op) ;
IF DebugTraceQuad
IF GetDebugTraceQuad ()
THEN
printf0('building: ') ;
DisplayQuad(q)

24
gcc/m2/gm2-compiler/M2LexBuf.mod
View File

@ -22,9 +22,10 @@ along with GNU Modula-2; see the file COPYING3. If not see
IMPLEMENTATION MODULE M2LexBuf ;
IMPORT m2flex ;
IMPORT FIO ;
FROM libc IMPORT strlen ;
FROM SYSTEM IMPORT ADDRESS ;
FROM SYSTEM IMPORT ADDRESS, ADR ;
FROM Storage IMPORT ALLOCATE, DEALLOCATE ;
FROM DynamicStrings IMPORT string, InitString, InitStringCharStar, Equal, Mark, KillString ;
FROM FormatStrings IMPORT Sprintf1 ;
@ -33,10 +34,13 @@ FROM M2Reserved IMPORT toktype, tokToTok ;
FROM M2Printf IMPORT printf0, printf1, printf2, printf3 ;
FROM M2Debug IMPORT Assert ;
FROM NameKey IMPORT makekey ;
FROM NumberIO IMPORT CardToStr ;
FROM m2linemap IMPORT location_t, GetLocationBinary ;
FROM M2Emit IMPORT UnknownLocation, BuiltinsLocation ;
FROM M2Error IMPORT WarnStringAt ;
FROM M2MetaError IMPORT MetaErrorT0 ;
FROM M2Options IMPORT GetDebugTraceToken ;
FROM M2LangDump IMPORT GetDumpFile ;
FROM Indexing IMPORT Index, InitIndex, GetIndice, PutIndice,
KillIndex, ForeachIndiceInIndexDo,
@ -659,16 +663,30 @@ END GetTokenFiltered ;
*)
PROCEDURE GetToken ;
VAR
buf: ARRAY [0..20] OF CHAR ;
BEGIN
IF UseBufferedTokens
THEN
UpdateToken (ListOfTokens, CurrentTokNo)
UpdateToken (ListOfTokens, CurrentTokNo) ;
IF GetDebugTraceToken ()
THEN
CardToStr (CurrentTokNo, 0, buf) ;
FIO.WriteString (GetDumpFile (), 'token: ') ;
FIO.WriteString (GetDumpFile (), buf) ;
FIO.WriteLine (GetDumpFile ())
END
ELSE
IF NOT InBounds (ListOfTokens, CurrentTokNo)
THEN
GetTokenFiltered (FALSE)
END ;
UpdateToken (ListOfTokens, CurrentTokNo)
UpdateToken (ListOfTokens, CurrentTokNo) ;
IF GetDebugTraceToken ()
THEN
CardToStr (CurrentTokNo, 0, buf) ;
m2flex.M2Error (ADR (buf))
END
END
END GetToken ;

54
gcc/m2/gm2-compiler/M2Options.def
View File

@ -45,8 +45,6 @@ VAR
Pim4, (* -fpim4 use strict rules. *)
PositiveModFloorDiv, (* Force PIM4 behaviour for DIV and MOD *)
CompilerDebugging, (* -fd internal debugging messages *)
DebugTraceQuad, (* -fdebug-trace-quad *)
DebugTraceAPI, (* -fdebug-trace-api *)
GenerateDebugging, (* -g option to generate info for gdb/dbx *)
GenerateLineDebug, (* -gline to generate line debugging. *)
Verbose, (* -verbose produce verbose error messages. *)
@ -119,7 +117,6 @@ VAR
(* the shared library version of the *)
(* scaffold. *)
ForcedLocation,
DebugFunctionLineNumbers,
GenerateStatementNote,
Optimizing,
Coding,
@ -672,22 +669,16 @@ PROCEDURE SetQuadDebugging (value: BOOLEAN) ;
(*
SetDebugTraceQuad -
SetM2DebugTraceFilter - set internal debug flags. The flags should be
specified as a comma separated list. The full
list allowed is quad,line,token,tree.
*)
PROCEDURE SetDebugTraceQuad (value: BOOLEAN) ;
PROCEDURE SetM2DebugTraceFilter (value: BOOLEAN; filter: ADDRESS) ;
(*
SetDebugTraceAPI -
*)
PROCEDURE SetDebugTraceAPI (value: BOOLEAN) ;
(*
SetDebugFunctionLineNumbers - turn DebugFunctionLineNumbers on/off
(used internally for debugging).
SetDebugFunctionLineNumbers - set DebugFunctionLineNumbers.
*)
PROCEDURE SetDebugFunctionLineNumbers (value: BOOLEAN) ;
@ -1076,6 +1067,41 @@ PROCEDURE GetM2DumpFilter () : ADDRESS ;
PROCEDURE GetDumpLangGimple () : BOOLEAN ;
(*
GetDebugTraceQuad - return DebugTraceQuad.
*)
PROCEDURE GetDebugTraceQuad () : BOOLEAN ;
(*
GetDebugTraceTree - return DebugTraceTree.
*)
PROCEDURE GetDebugTraceTree () : BOOLEAN ;
(*
GetDebugTraceToken - return DebugTraceToken.
*)
PROCEDURE GetDebugTraceToken () : BOOLEAN ;
(*
GetDebugTraceLine - return DebugTraceLine.
*)
PROCEDURE GetDebugTraceLine () : BOOLEAN ;
(*
GetDebugFunctionLineNumbers - return DebugFunctionLineNumbers.
*)
PROCEDURE GetDebugFunctionLineNumbers () : BOOLEAN ;
(*
FinaliseOptions - once all options have been parsed we set any inferred
values.

154
gcc/m2/gm2-compiler/M2Options.mod
View File

@ -33,10 +33,12 @@ FROM Debug IMPORT Halt ;
FROM m2linemap IMPORT location_t ;
FROM m2configure IMPORT FullPathCPP, TargetIEEEQuadDefault ;
FROM M2Error IMPORT InternalError ;
FROM FormatStrings IMPORT Sprintf1 ;
FROM m2misc IMPORT cerror ;
FROM DynamicStrings IMPORT String, Length, InitString, Mark, Slice, EqualArray,
InitStringCharStar, ConCatChar, ConCat, KillString,
Dup, string, char,
Dup, string, char, Index,
PushAllocation, PopAllocationExemption,
InitStringDB, InitStringCharStarDB,
InitStringCharDB, MultDB, DupDB, SliceDB ;
@ -73,6 +75,11 @@ VAR
UselistFilename,
RuntimeModuleOverride,
CppArgs : String ;
DebugFunctionLineNumbers,
DebugTraceQuad, (* -fdebug-trace-quad. *)
DebugTraceTree, (* -fdebug-trace-tree. *)
DebugTraceLine, (* -fdebug-trace-line. *)
DebugTraceToken, (* -fdebug-trace-token. *)
MFlag,
MMFlag,
MPFlag,
@ -317,6 +324,22 @@ BEGIN
END GetMP ;
(*
errors1 -
*)
PROCEDURE errors1 (format: ARRAY OF CHAR; arg: String) ;
VAR
message: String ;
cstr : ADDRESS ;
BEGIN
message := Sprintf1 (InitString (format), arg) ;
cstr := string (message) ;
cerror (cstr) ;
exit (1)
END errors1 ;
(*
AddWord - concats a word to sentence inserting a space if necessary.
sentence is returned. sentence will be created if it is NIL.
@ -1079,23 +1102,121 @@ END SetCompilerDebugging ;
(*
SetDebugTraceQuad -
SetM2DebugTraceFilter - set internal debug flags. The flags should be
specified as a comma separated list. The full
list allowed is quad,line,token,all.
*)
PROCEDURE SetDebugTraceQuad (value: BOOLEAN) ;
PROCEDURE SetM2DebugTraceFilter (value: BOOLEAN; filter: ADDRESS) ;
VAR
word,
full : String ;
start,
i : INTEGER ;
BEGIN
DebugTraceQuad := value
END SetDebugTraceQuad ;
full := InitStringCharStar (filter) ;
start := 0 ;
REPEAT
i := Index (full, ',', start) ;
IF i = -1
THEN
word := Slice (full, start, 0)
ELSE
word := Slice (full, start, i)
END ;
SetM2DebugTrace (word, value) ;
word := KillString (word) ;
start := i+1 ;
UNTIL i = -1 ;
full := KillString (full) ;
END SetM2DebugTraceFilter ;
(*
SetDebugTraceAPI -
SetM2DebugTrace -
*)
PROCEDURE SetDebugTraceAPI (value: BOOLEAN) ;
PROCEDURE SetM2DebugTrace (word: String; value: BOOLEAN) ;
BEGIN
DebugTraceAPI := value
END SetDebugTraceAPI ;
IF EqualArray (word, 'all')
THEN
(* DebugTraceTree := value *)
DebugTraceQuad := value ;
DebugTraceToken := value ;
DebugTraceLine := value
ELSIF EqualArray (word, 'quad')
THEN
DebugTraceQuad := value
ELSIF EqualArray (word, 'token')
THEN
DebugTraceToken := value
ELSIF EqualArray (word, 'line')
THEN
DebugTraceLine := value
ELSE
errors1 ("unrecognized filter %s seen in -fm2-debug-trace= option\n", word)
END
END SetM2DebugTrace ;
(*
SetDebugFunctionLineNumbers - set DebugFunctionLineNumbers.
*)
PROCEDURE SetDebugFunctionLineNumbers (value: BOOLEAN) ;
BEGIN
DebugFunctionLineNumbers := value
END SetDebugFunctionLineNumbers ;
(*
GetDebugTraceQuad - return DebugTraceQuad.
*)
PROCEDURE GetDebugTraceQuad () : BOOLEAN ;
BEGIN
RETURN DebugTraceQuad
END GetDebugTraceQuad ;
(*
GetDebugTraceTree - return DebugTraceTree.
*)
PROCEDURE GetDebugTraceTree () : BOOLEAN ;
BEGIN
RETURN DebugTraceTree
END GetDebugTraceTree ;
(*
GetDebugTraceToken - return DebugTraceToken.
*)
PROCEDURE GetDebugTraceToken () : BOOLEAN ;
BEGIN
RETURN DebugTraceToken
END GetDebugTraceToken ;
(*
GetDebugTraceLine - return DebugTraceLine.
*)
PROCEDURE GetDebugTraceLine () : BOOLEAN ;
BEGIN
RETURN DebugTraceLine
END GetDebugTraceLine ;
(*
GetDebugFunctionLineNumbers - return DebugFunctionLineNumbers.
*)
PROCEDURE GetDebugFunctionLineNumbers () : BOOLEAN ;
BEGIN
RETURN DebugFunctionLineNumbers
END GetDebugFunctionLineNumbers ;
(*
@ -1236,17 +1357,6 @@ BEGIN
END OverrideLocation ;
(*
SetDebugFunctionLineNumbers - turn DebugFunctionLineNumbers on/off
(used internally for debugging).
*)
PROCEDURE SetDebugFunctionLineNumbers (value: BOOLEAN) ;
BEGIN
DebugFunctionLineNumbers := value
END SetDebugFunctionLineNumbers ;
(*
SetGenerateStatementNote - turn on generation of nops if necessary
to generate pedalogical single stepping.
@ -1848,7 +1958,9 @@ BEGIN
ForcedLocation := FALSE ;
WholeProgram := FALSE ;
DebugTraceQuad := FALSE ;
DebugTraceAPI := FALSE ;
DebugTraceTree := FALSE ;
DebugTraceLine := FALSE ;
DebugTraceToken := FALSE ;
DebugFunctionLineNumbers := FALSE ;
GenerateStatementNote := FALSE ;
LowerCaseKeywords := FALSE ;

18
gcc/m2/gm2-compiler/M2Quads.mod
View File

@ -221,7 +221,7 @@ FROM M2Options IMPORT NilChecking,
ScaffoldDynamic, ScaffoldStatic, cflag,
ScaffoldMain, SharedFlag, WholeProgram,
GetDumpDir, GetM2DumpFilter,
GetRuntimeModuleOverride,
GetRuntimeModuleOverride, GetDebugTraceQuad,
DumpLangQuad ;
FROM M2LangDump IMPORT CreateDumpQuad, CloseDumpQuad, GetDumpFile ;
@ -13390,13 +13390,18 @@ BEGIN
TokenNo := GetTokenNo ()
ELSE
TokenNo := TokPos
END ;
IF GetDebugTraceQuad ()
THEN
printf0('generating: ') ;
DisplayQuad (NextQuad) ;
(* MetaErrorT1 (TokenNo, '{%1On}', NextQuad) *)
END
END ;
IF NextQuad=BreakAtQuad
THEN
stop
END ;
(* DisplayQuad(NextQuad) ; *)
NewQuad (NextQuad)
END
END GenQuadOTrash ;
@ -13475,13 +13480,18 @@ BEGIN
END ;
op1pos := Op1Pos ;
op2pos := Op2Pos ;
op3pos := Op3Pos
op3pos := Op3Pos ;
IF GetDebugTraceQuad ()
THEN
printf0('generating: ') ;
DisplayQuad (NextQuad) ;
(* MetaErrorT1 (TokenNo, '{%1On}', NextQuad) *)
END
END ;
IF NextQuad=BreakAtQuad
THEN
stop
END ;
(* DisplayQuad(NextQuad) ; *)
NewQuad (NextQuad)
END
END GenQuadOTypetok ;

6
gcc/m2/gm2-compiler/SymbolTable.mod
View File

@ -35,7 +35,9 @@ FROM Indexing IMPORT InitIndex, InBounds, LowIndice, HighIndice,
FROM Sets IMPORT Set, InitSet, IncludeElementIntoSet, IsElementInSet ;
FROM m2linemap IMPORT location_t ;
FROM M2Options IMPORT Pedantic, ExtendedOpaque, DebugFunctionLineNumbers, ScaffoldDynamic, DebugBuiltins ;
FROM M2Options IMPORT Pedantic, ExtendedOpaque,
GetDebugFunctionLineNumbers, ScaffoldDynamic,
DebugBuiltins ;
FROM M2LexBuf IMPORT UnknownTokenNo, TokenToLineNo,
FindFileNameFromToken, TokenToLocation ;
@ -1375,7 +1377,7 @@ END DebugProcedureLineNumber ;
PROCEDURE DebugLineNumbers (sym: CARDINAL) ;
BEGIN
IF DebugFunctionLineNumbers
IF GetDebugFunctionLineNumbers ()
THEN
printf0 ('<lines>\n') ;
ForeachProcedureDo(sym, DebugProcedureLineNumber) ;

2
gcc/m2/gm2-gcc/init.cc
View File

@ -78,6 +78,7 @@ EXTERN void _M2_SymbolKey_init (int argc, char *argv[], char *envp[]);
EXTERN void _M2_FifoQueue_init (int argc, char *argv[], char *envp[]);
EXTERN void _M2_M2Reserved_init (int argc, char *argv[], char *envp[]);
EXTERN void _M2_M2Const_init (int argc, char *argv[], char *envp[]);
EXTERN void _M2_M2LangDump_init (int argc, char *argv[], char *envp[]);
EXTERN void _M2_P1SymBuild_init (int argc, char *argv[], char *envp[]);
EXTERN void _M2_P2SymBuild_init (int argc, char *argv[], char *envp[]);
EXTERN void _M2_P3SymBuild_init (int argc, char *argv[], char *envp[]);
@ -198,5 +199,6 @@ init_PerCompilationInit (const char *filename)
_M2_M2SSA_init (0, NULL, NULL);
_M2_M2SymInit_init (0, NULL, NULL);
_M2_M2Check_init (0, NULL, NULL);
_M2_M2LangDump_init (0, NULL, NULL);
M2Comp_compile (filename);
}

16
gcc/m2/gm2-gcc/m2misc.cc
View File

@ -29,6 +29,22 @@ along with GNU Modula-2; see the file COPYING3. If not see
#include "m2misc.h"
#include "m2tree.h"
/* C error entry to error. */
void
m2misc_cerror (const char *message)
{
error (message);
}
/* modula2 entry for cerror. */
void
m2misc_error (const char *message)
{
m2misc_cerror (message);
}
/* DebugTree - display the tree t. */
void

4
gcc/m2/gm2-gcc/m2misc.def
View File

@ -22,8 +22,12 @@ along with GNU Modula-2; see the file COPYING3. If not see
DEFINITION MODULE FOR "C" m2misc ;
FROM m2tree IMPORT Tree ;
FROM SYSTEM IMPORT ADDRESS ;
PROCEDURE DebugTree (t: Tree) ;
PROCEDURE error (message: ARRAY OF CHAR) ;
PROCEDURE cerror (message: ADDRESS) ;
END m2misc.

2
gcc/m2/gm2-gcc/m2misc.h
View File

@ -39,6 +39,8 @@ along with GNU Modula-2; see the file COPYING3. If not see
EXTERN void m2misc_DebugTree (tree t);
EXTERN void m2misc_printStmt (void);
EXTERN void m2misc_DebugTreeChain (tree t);
EXTERN void m2misc_cerror (const char *message);
EXTERN void m2misc_error (const char *message);
#undef EXTERN
#endif /* m2misc_h. */

7
gcc/m2/gm2-gcc/m2options.h
View File

@ -84,8 +84,10 @@ EXTERN bool M2Options_SetVerboseUnbounded (bool value);
EXTERN void M2Options_SetXCode (bool value);
EXTERN void M2Options_SetCompilerDebugging (bool value);
EXTERN void M2Options_SetQuadDebugging (bool value);
EXTERN void M2Options_SetDebugTraceQuad (bool value);
EXTERN void M2Options_SetDebugTraceAPI (bool value);
EXTERN bool M2Options_GetDebugTraceToken (void);
EXTERN bool M2Options_GetDebugTraceLine (void);
EXTERN void M2Options_SetDebugFunctionLineNumbers (bool value);
EXTERN bool M2Options_GetDebugFunctionLineNumbers (void);
EXTERN void M2Options_SetSources (bool value);
EXTERN bool M2Options_SetUnboundedByReference (bool value);
EXTERN void M2Options_SetDumpSystemExports (bool value);
@ -162,6 +164,7 @@ EXTERN void M2Options_SetDumpLangGimpleFilename (bool value, const char *arg);
EXTERN bool M2Options_GetDumpLangGimple (void);
EXTERN void M2Options_SetM2DumpFilter (bool value, const char *args);
EXTERN char *M2Options_GetM2DumpFilter (void);
EXTERN void M2Options_SetM2DebugTraceFilter (bool value, const char *arg);
#undef EXTERN
#endif /* m2options_h. */

9
gcc/m2/gm2-lang.cc
View File

@ -475,12 +475,6 @@ gm2_langhook_handle_option (
case OPT_fdebug_builtins:
M2Options_SetDebugBuiltins (value);
return 1;
case OPT_fdebug_trace_quad:
M2Options_SetDebugTraceQuad (value);
return 1;
case OPT_fdebug_trace_api:
M2Options_SetDebugTraceAPI (value);
return 1;
case OPT_fdebug_function_line_numbers:
M2Options_SetDebugFunctionLineNumbers (value);
return 1;
@ -549,6 +543,9 @@ gm2_langhook_handle_option (
case OPT_fm2_strict_type:
M2Options_SetStrictTypeChecking (value);
return 1;
case OPT_fm2_debug_trace_:
M2Options_SetM2DebugTraceFilter (value, arg);
return 1;
#ifdef ENABLE_QUAD_DUMP_ALL
case OPT_fm2_dump_filter_:
M2Options_SetM2DumpFilter (value, arg);

14
gcc/m2/lang.opt
View File

@ -90,17 +90,9 @@ fd
Modula-2
turn on internal debugging of the compiler (internal switch)
fdebug-trace-quad
Modula-2
turn on quadruple tracing (internal switch)
fdebug-trace-api
Modula-2
turn on the Modula-2 api tracing (internal switch)
fdebug-function-line-numbers
Modula-2
turn on the Modula-2 function line number generation (internal switch)
turn on tracing of procedure line numbers (internal switch)
fdef=
Modula-2 Joined
@ -138,6 +130,10 @@ flocation=
Modula-2 Joined
set all location values to a specific value (internal switch)
fm2-debug-trace=
Modula-2 Joined
turn on internal debug tracing for quad,token,line,all (internal switch)
fm2-g
Modula-2
generate extra nops to improve debugging, producing an instruction for every code related keyword

33
gcc/m2/m2.flex
View File

@ -491,6 +491,9 @@ EXTERN void m2flex_M2Error (const char *s)
}
putchar('\n');
}
if (s == NULL)
printf("%s:%d\n", filename, currentLine->lineno);
else
printf("%s:%d:%s\n", filename, currentLine->lineno, s);
}
@ -507,6 +510,35 @@ static void poperrorskip (const char *s)
}
}
/* skipnewline skips all '\n' at the start of the line and returns
the new position. */
static
char *
skipnewline (char *line)
{
while (((*line) != (char)0) && ((*line) == '\n'))
line++;
return line;
}
/* traceLine display the source line providing -fdebug-trace-line was
enabled. */
static
void
traceLine (void)
{
if (M2Options_GetDebugTraceLine ())
{
char *line = skipnewline (currentLine->linebuf);
if (filename == NULL)
printf("<stdin>:%d:%s\n", currentLine->lineno, line);
else
printf("%s:%d:%s\n", filename, currentLine->lineno, line);
}
}
/*
* consumeLine - reads a line into a buffer, it then pushes back the whole
* line except the initial \n.
@ -527,6 +559,7 @@ static void consumeLine (void)
currentLine->column=0;
START_LINE (lineno, yyleng);
yyless(1); /* push back all but the \n */
traceLine ();
}
static void assert_location (location_t location ATTRIBUTE_UNUSED)