2012-09-01 23:33:33 +08:00
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/****************************************************************************
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* tools/csvparser.h
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*
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2024-09-10 20:15:58 +08:00
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* SPDX-License-Identifier: Apache-2.0
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*
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Improve proxy/stub parameter passing for variadic OS interfaces.
In the past a very low effort interface was used:
- All parmeters were treated as though they were type uinptr_t, and
- The maximum number of parmeters (6) was passed in all cases.
The first is potentially wrong and the second is very inefficient. This commit improves this by:
- Making tools/mksyscall.c more intelligent, and
- Extending the syntax for variadic functions.
For example, in syscall.cvs, the open() API was represened like this:
"open","fcntl.h","","int","const char*","int","..."
In reality, open may take only a single optional argument of type mode_t which is not the same size as uintptr_t. And there is not reason to pass 6 parameters in that case.
And this has been extended to:
"open","fcntl.h","","int","const char*","int","...","mode_t"
The existence of the "mode_t" tells tools/mksyscall that there is at most one optional parameter and, if present, it is of type mode_t.
2020-05-06 05:02:07 +08:00
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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2012-09-01 23:33:33 +08:00
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*
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Improve proxy/stub parameter passing for variadic OS interfaces.
In the past a very low effort interface was used:
- All parmeters were treated as though they were type uinptr_t, and
- The maximum number of parmeters (6) was passed in all cases.
The first is potentially wrong and the second is very inefficient. This commit improves this by:
- Making tools/mksyscall.c more intelligent, and
- Extending the syntax for variadic functions.
For example, in syscall.cvs, the open() API was represened like this:
"open","fcntl.h","","int","const char*","int","..."
In reality, open may take only a single optional argument of type mode_t which is not the same size as uintptr_t. And there is not reason to pass 6 parameters in that case.
And this has been extended to:
"open","fcntl.h","","int","const char*","int","...","mode_t"
The existence of the "mode_t" tells tools/mksyscall that there is at most one optional parameter and, if present, it is of type mode_t.
2020-05-06 05:02:07 +08:00
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* http://www.apache.org/licenses/LICENSE-2.0
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2012-09-01 23:33:33 +08:00
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*
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Improve proxy/stub parameter passing for variadic OS interfaces.
In the past a very low effort interface was used:
- All parmeters were treated as though they were type uinptr_t, and
- The maximum number of parmeters (6) was passed in all cases.
The first is potentially wrong and the second is very inefficient. This commit improves this by:
- Making tools/mksyscall.c more intelligent, and
- Extending the syntax for variadic functions.
For example, in syscall.cvs, the open() API was represened like this:
"open","fcntl.h","","int","const char*","int","..."
In reality, open may take only a single optional argument of type mode_t which is not the same size as uintptr_t. And there is not reason to pass 6 parameters in that case.
And this has been extended to:
"open","fcntl.h","","int","const char*","int","...","mode_t"
The existence of the "mode_t" tells tools/mksyscall that there is at most one optional parameter and, if present, it is of type mode_t.
2020-05-06 05:02:07 +08:00
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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2012-09-01 23:33:33 +08:00
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*
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****************************************************************************/
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#ifndef __TOOLS_CSVPARSER_H
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#define __TOOLS_CSVPARSER_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdbool.h>
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#include <limits.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define LINESIZE (PATH_MAX > 256 ? PATH_MAX : 256)
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#define MAX_FIELDS 16
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2018-11-08 21:36:02 +08:00
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#define MAX_PARMSIZE 256
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Improve proxy/stub parameter passing for variadic OS interfaces.
In the past a very low effort interface was used:
- All parmeters were treated as though they were type uinptr_t, and
- The maximum number of parmeters (6) was passed in all cases.
The first is potentially wrong and the second is very inefficient. This commit improves this by:
- Making tools/mksyscall.c more intelligent, and
- Extending the syntax for variadic functions.
For example, in syscall.cvs, the open() API was represened like this:
"open","fcntl.h","","int","const char*","int","..."
In reality, open may take only a single optional argument of type mode_t which is not the same size as uintptr_t. And there is not reason to pass 6 parameters in that case.
And this has been extended to:
"open","fcntl.h","","int","const char*","int","...","mode_t"
The existence of the "mode_t" tells tools/mksyscall that there is at most one optional parameter and, if present, it is of type mode_t.
2020-05-06 05:02:07 +08:00
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2012-09-01 23:33:33 +08:00
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#define NAME_INDEX 0
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#define HEADER_INDEX 1
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#define COND_INDEX 2
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#define RETTYPE_INDEX 3
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#define PARM1_INDEX 4
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Improve proxy/stub parameter passing for variadic OS interfaces.
In the past a very low effort interface was used:
- All parmeters were treated as though they were type uinptr_t, and
- The maximum number of parmeters (6) was passed in all cases.
The first is potentially wrong and the second is very inefficient. This commit improves this by:
- Making tools/mksyscall.c more intelligent, and
- Extending the syntax for variadic functions.
For example, in syscall.cvs, the open() API was represened like this:
"open","fcntl.h","","int","const char*","int","..."
In reality, open may take only a single optional argument of type mode_t which is not the same size as uintptr_t. And there is not reason to pass 6 parameters in that case.
And this has been extended to:
"open","fcntl.h","","int","const char*","int","...","mode_t"
The existence of the "mode_t" tells tools/mksyscall that there is at most one optional parameter and, if present, it is of type mode_t.
2020-05-06 05:02:07 +08:00
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/****************************************************************************
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* Public Types
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****************************************************************************/
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typedef char csvparm_t[MAX_PARMSIZE];
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2012-09-01 23:33:33 +08:00
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/****************************************************************************
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* Public Data
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****************************************************************************/
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Improve proxy/stub parameter passing for variadic OS interfaces.
In the past a very low effort interface was used:
- All parmeters were treated as though they were type uinptr_t, and
- The maximum number of parmeters (6) was passed in all cases.
The first is potentially wrong and the second is very inefficient. This commit improves this by:
- Making tools/mksyscall.c more intelligent, and
- Extending the syntax for variadic functions.
For example, in syscall.cvs, the open() API was represened like this:
"open","fcntl.h","","int","const char*","int","..."
In reality, open may take only a single optional argument of type mode_t which is not the same size as uintptr_t. And there is not reason to pass 6 parameters in that case.
And this has been extended to:
"open","fcntl.h","","int","const char*","int","...","mode_t"
The existence of the "mode_t" tells tools/mksyscall that there is at most one optional parameter and, if present, it is of type mode_t.
2020-05-06 05:02:07 +08:00
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extern bool g_debug;
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extern char g_line[LINESIZE + 1];
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extern csvparm_t g_parm[MAX_FIELDS];
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extern int g_lineno;
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2012-09-01 23:33:33 +08:00
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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char *read_line(FILE *stream);
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int parse_csvline(char *ptr);
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#endif /* __TOOLS_CSVPARSER_H */
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