wine/gecko
0
0
Fork 0
mirror of https://gitlab.winehq.org/wine/wine-gecko.git synced 2024-09-13 09:24:08 -07:00
Code Issues Packages Projects Releases Wiki Activity
3513548bc5
gecko/js/src/jsdtracef.c

319 lines
8.9 KiB
C
Raw Blame History

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sw=4 et tw=80:
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Copyright (C) 2007 Sun Microsystems, Inc. All Rights Reserved.
*
* Contributor(s):
* Brendan Eich <brendan@mozilla.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "jsapi.h"
#include "jsutil.h"
#include "jsatom.h"
#include "jscntxt.h"
#include "jsdbgapi.h"
#include "jsfun.h"
#include "jsinterp.h"
#include "jsobj.h"
#include "jsscript.h"
#include "jsstr.h"
#include "jsdtracef.h"
#include <sys/types.h>
#define TYPEOF(cx,v) (JSVAL_IS_NULL(v) ? JSTYPE_NULL : JS_TypeOfValue(cx,v))
static char dempty[] = "<null>";
char *
jsdtrace_funcclass_name(JSFunction *fun)
{
return (!FUN_INTERPRETED(fun) &&
!(fun->flags & JSFUN_TRACEABLE) &&
FUN_CLASP(fun))
? (char *)FUN_CLASP(fun)->name
: dempty;
}
char *
jsdtrace_filename(JSStackFrame *fp)
{
while (fp && fp->script == NULL)
fp = fp->down;
return (fp && fp->script && fp->script->filename)
? (char *)fp->script->filename
: dempty;
}
int
jsdtrace_linenumber(JSContext *cx, JSStackFrame *fp)
{
while (fp && fp->script == NULL)
fp = fp->down;
return (fp && fp->regs)
? (int) js_PCToLineNumber(cx, fp->script, fp->regs->pc)
: -1;
}
/*
* This function is used to convert function arguments and return value (jsval)
* into the following based on each value's type tag:
*
* jsval returned
* -------------------
* STRING -> char *
* INT -> int
* DOUBLE -> double *
* BOOLEAN -> int
* OBJECT -> void *
*
* All are presented as void * for DTrace consumers to use, after shifting or
* masking out the JavaScript type bits. This allows D scripts to use ints and
* booleans directly and copyinstr() for string arguments, when types are known
* beforehand.
*
* This is used by the function-args and function-rval probes, which also
* provide raw (unmasked) jsvals should type info be useful from D scripts.
*/
void *
jsdtrace_jsvaltovoid(JSContext *cx, jsval argval)
{
JSType type = TYPEOF(cx, argval);
switch (type) {
case JSTYPE_NULL:
case JSTYPE_VOID:
return (void *)JS_TYPE_STR(type);
case JSTYPE_BOOLEAN:
return (void *)JSVAL_TO_BOOLEAN(argval);
case JSTYPE_STRING:
return (void *)js_GetStringBytes(cx, JSVAL_TO_STRING(argval));
case JSTYPE_NUMBER:
if (JSVAL_IS_INT(argval))
return (void *)JSVAL_TO_INT(argval);
return JSVAL_TO_DOUBLE(argval);
default:
return JSVAL_TO_GCTHING(argval);
}
/* NOTREACHED */
}
char *
jsdtrace_function_name(JSContext *cx, JSStackFrame *fp, JSFunction *fun)
{
JSAtom *atom;
JSFrameRegs *regs;
JSScript *script;
jsbytecode *pc;
char *name;
atom = fun->atom;
if (!atom) {
if (fp->fun != fun || !fp->down)
return dempty;
regs = fp->down->regs;
if (!regs)
return dempty;
/*
* An anonymous function called from an active script or interpreted
* function: try to fetch the variable or property name by which the
* anonymous function was invoked.
*/
pc = regs->pc;
script = fp->down->script;
switch ((JSOp) *pc) {
case JSOP_CALL:
case JSOP_EVAL:
JS_ASSERT(fp->argv == regs->sp - (int)GET_ARGC(pc));
/*
* FIXME bug 422864: update this code to use the pc stack from the
* decompiler.
*/
break;
default: ;
}
switch ((JSOp) *pc) {
case JSOP_CALLNAME:
case JSOP_CALLPROP:
case JSOP_NAME:
case JSOP_SETNAME:
case JSOP_GETPROP:
case JSOP_SETPROP:
GET_ATOM_FROM_BYTECODE(script, pc, 0, atom);
break;
case JSOP_CALLELEM:
case JSOP_GETELEM:
case JSOP_SETELEM:
case JSOP_CALLGVAR:
case JSOP_GETGVAR:
case JSOP_SETGVAR:
case JSOP_CALLARG:
case JSOP_CALLLOCAL:
/* FIXME: try to recover a name from these ops. */
/* FALL THROUGH */
default:
return dempty;
}
}
name = (char *)js_GetStringBytes(cx, ATOM_TO_STRING(atom));
return name ? name : dempty;
}
/*
* These functions call the DTrace macros for the JavaScript USDT probes.
* Originally this code was inlined in the JavaScript code; however since
* a number of operations are called, these have been placed into functions
* to reduce any negative compiler optimization effect that the addition of
* a number of usually unused lines of code would cause.
*/
void
jsdtrace_function_entry(JSContext *cx, JSStackFrame *fp, JSFunction *fun)
{
JAVASCRIPT_FUNCTION_ENTRY(
jsdtrace_filename(fp),
jsdtrace_funcclass_name(fun),
jsdtrace_function_name(cx, fp, fun)
);
}
void
jsdtrace_function_info(JSContext *cx, JSStackFrame *fp, JSStackFrame *dfp,
JSFunction *fun)
{
JAVASCRIPT_FUNCTION_INFO(
jsdtrace_filename(fp),
jsdtrace_funcclass_name(fun),
jsdtrace_function_name(cx, fp, fun),
fp->script->lineno,
jsdtrace_filename(dfp),
jsdtrace_linenumber(cx, dfp)
);
}
void
jsdtrace_function_args(JSContext *cx, JSStackFrame *fp, JSFunction *fun)
{
JAVASCRIPT_FUNCTION_ARGS(
jsdtrace_filename(fp),
jsdtrace_funcclass_name(fun),
jsdtrace_function_name(cx, fp, fun),
fp->argc, (void *)fp->argv,
(fp->argc > 0) ? jsdtrace_jsvaltovoid(cx, fp->argv[0]) : 0,
(fp->argc > 1) ? jsdtrace_jsvaltovoid(cx, fp->argv[1]) : 0,
(fp->argc > 2) ? jsdtrace_jsvaltovoid(cx, fp->argv[2]) : 0,
(fp->argc > 3) ? jsdtrace_jsvaltovoid(cx, fp->argv[3]) : 0,
(fp->argc > 4) ? jsdtrace_jsvaltovoid(cx, fp->argv[4]) : 0
);
}
void
jsdtrace_function_rval(JSContext *cx, JSStackFrame *fp, JSFunction *fun)
{
JAVASCRIPT_FUNCTION_RVAL(
jsdtrace_filename(fp),
jsdtrace_funcclass_name(fun),
jsdtrace_function_name(cx, fp, fun),
jsdtrace_linenumber(cx, fp), (void *)fp->rval,
jsdtrace_jsvaltovoid(cx, fp->rval)
);
}
void
jsdtrace_function_return(JSContext *cx, JSStackFrame *fp, JSFunction *fun)
{
JAVASCRIPT_FUNCTION_RETURN(
jsdtrace_filename(fp),
jsdtrace_funcclass_name(fun),
jsdtrace_function_name(cx, fp, fun)
);
}
void
jsdtrace_object_create_start(JSStackFrame *fp, JSClass *clasp)
{
JAVASCRIPT_OBJECT_CREATE_START(jsdtrace_filename(fp), (char *)clasp->name);
}
void
jsdtrace_object_create_done(JSStackFrame *fp, JSClass *clasp)
{
JAVASCRIPT_OBJECT_CREATE_DONE(jsdtrace_filename(fp), (char *)clasp->name);
}
void
jsdtrace_object_create(JSContext *cx, JSClass *clasp, JSObject *obj)
{
JAVASCRIPT_OBJECT_CREATE(
jsdtrace_filename(cx->fp),
(char *)clasp->name,
(uintptr_t)obj,
jsdtrace_linenumber(cx, cx->fp)
);
}
void
jsdtrace_object_finalize(JSObject *obj)
{
JSClass *clasp;
clasp = LOCKED_OBJ_GET_CLASS(obj);
/* the first arg is NULL - reserved for future use (filename?) */
JAVASCRIPT_OBJECT_FINALIZE(NULL, (char *)clasp->name, (uintptr_t)obj);
}
void
jsdtrace_execute_start(JSScript *script)
{
JAVASCRIPT_EXECUTE_START(
script->filename ? (char *)script->filename : dempty,
script->lineno
);
}
void
jsdtrace_execute_done(JSScript *script)
{
JAVASCRIPT_EXECUTE_DONE(
script->filename ? (char *)script->filename : dempty,
script->lineno
);
}
Reference in New Issue View Git Blame Copy Permalink