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https://github.com/python/cpython
Revision 9cac7b6117a61aac15c9d5ea3b85e7d3d5097a69 authored by Thomas Heller on 06 June 2008, 09:31:40 UTC, committed by Thomas Heller on 06 June 2008, 09:31:40 UTC
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r63977 | thomas.heller | 2008-06-06 10:33:46 +0200 (Fri, 06 Jun 2008) | 31 lines

  Issue #1798: Add ctypes calling convention that allows safe access of errno.

  ctypes maintains thread-local storage that has space for two error
  numbers: private copies of the system 'errno' value and, on Windows,
  the system error code accessed by the GetLastError() and
  SetLastError() api functions.

  Foreign functions created with CDLL(..., use_errno=True), when called,
  swap the system 'errno' value with the private copy just before the
  actual function call, and swapped again immediately afterwards.  The
  'use_errno' parameter defaults to False, in this case 'ctypes_errno'
  is not touched.

  On Windows, foreign functions created with CDLL(...,
  use_last_error=True) or WinDLL(..., use_last_error=True) swap the
  system LastError value with the ctypes private copy.

  The values are also swapped immeditately before and after ctypes
  callback functions are called, if the callbacks are constructed using
  the new optional use_errno parameter set to True: CFUNCTYPE(...,
  use_errno=TRUE) or WINFUNCTYPE(..., use_errno=True).

  New ctypes functions are provided to access the ctypes private copies
  from Python:

  - ctypes.set_errno(value) and ctypes.set_last_error(value) store
    'value' in the private copy and returns the previous value.

  - ctypes.get_errno() and ctypes.get_last_error() returns the current
    ctypes private copies value.
........
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Tip revision: 9cac7b6117a61aac15c9d5ea3b85e7d3d5097a69 authored by Thomas Heller on 06 June 2008, 09:31:40 UTC
Merged revisions 63977 via svnmerge from
Tip revision: 9cac7b6
opcode.h
#ifndef Py_OPCODE_H
#define Py_OPCODE_H
#ifdef __cplusplus
extern "C" {
#endif


/* Instruction opcodes for compiled code */

#define STOP_CODE	0
#define POP_TOP		1
#define ROT_TWO		2
#define ROT_THREE	3
#define DUP_TOP		4
#define ROT_FOUR	5
#define NOP		9

#define UNARY_POSITIVE	10
#define UNARY_NEGATIVE	11
#define UNARY_NOT	12

#define UNARY_INVERT	15

#define SET_ADD	17
#define LIST_APPEND	18
#define BINARY_POWER	19

#define BINARY_MULTIPLY	20

#define BINARY_MODULO	22
#define BINARY_ADD	23
#define BINARY_SUBTRACT	24
#define BINARY_SUBSCR	25
#define BINARY_FLOOR_DIVIDE 26
#define BINARY_TRUE_DIVIDE 27
#define INPLACE_FLOOR_DIVIDE 28
#define INPLACE_TRUE_DIVIDE 29

#define STORE_MAP	54
#define INPLACE_ADD	55
#define INPLACE_SUBTRACT	56
#define INPLACE_MULTIPLY	57

#define INPLACE_MODULO	59
#define STORE_SUBSCR	60
#define DELETE_SUBSCR	61

#define BINARY_LSHIFT	62
#define BINARY_RSHIFT	63
#define BINARY_AND	64
#define BINARY_XOR	65
#define BINARY_OR	66
#define INPLACE_POWER	67
#define GET_ITER	68
#define STORE_LOCALS	69
#define PRINT_EXPR	70
#define LOAD_BUILD_CLASS 71

#define INPLACE_LSHIFT	75
#define INPLACE_RSHIFT	76
#define INPLACE_AND	77
#define INPLACE_XOR	78
#define INPLACE_OR	79
#define BREAK_LOOP	80
#define WITH_CLEANUP    81

#define RETURN_VALUE	83
#define IMPORT_STAR	84

#define YIELD_VALUE	86
#define POP_BLOCK	87
#define END_FINALLY	88

#define HAVE_ARGUMENT	90	/* Opcodes from here have an argument: */

#define STORE_NAME	90	/* Index in name list */
#define DELETE_NAME	91	/* "" */
#define UNPACK_SEQUENCE	92	/* Number of sequence items */
#define FOR_ITER	93
#define UNPACK_EX       94      /* Num items before variable part +
                                   (Num items after variable part << 8) */

#define STORE_ATTR	95	/* Index in name list */
#define DELETE_ATTR	96	/* "" */
#define STORE_GLOBAL	97	/* "" */
#define DELETE_GLOBAL	98	/* "" */
#define DUP_TOPX	99	/* number of items to duplicate */
#define LOAD_CONST	100	/* Index in const list */
#define LOAD_NAME	101	/* Index in name list */
#define BUILD_TUPLE	102	/* Number of tuple items */
#define BUILD_LIST	103	/* Number of list items */
#define BUILD_SET	104     /* Number of set items */
#define BUILD_MAP	105	/* Always zero for now */
#define LOAD_ATTR	106	/* Index in name list */
#define COMPARE_OP	107	/* Comparison operator */
#define IMPORT_NAME	108	/* Index in name list */
#define IMPORT_FROM	109	/* Index in name list */

#define JUMP_FORWARD	110	/* Number of bytes to skip */
#define JUMP_IF_FALSE	111	/* "" */
#define JUMP_IF_TRUE	112	/* "" */
#define JUMP_ABSOLUTE	113	/* Target byte offset from beginning of code */

#define LOAD_GLOBAL	116	/* Index in name list */

#define CONTINUE_LOOP	119	/* Start of loop (absolute) */
#define SETUP_LOOP	120	/* Target address (relative) */
#define SETUP_EXCEPT	121	/* "" */
#define SETUP_FINALLY	122	/* "" */

#define LOAD_FAST	124	/* Local variable number */
#define STORE_FAST	125	/* Local variable number */
#define DELETE_FAST	126	/* Local variable number */

#define RAISE_VARARGS	130	/* Number of raise arguments (1, 2 or 3) */
/* CALL_FUNCTION_XXX opcodes defined below depend on this definition */
#define CALL_FUNCTION	131	/* #args + (#kwargs<<8) */
#define MAKE_FUNCTION	132	/* #defaults + #kwdefaults<<8 + #annotations<<16 */
#define BUILD_SLICE 	133	/* Number of items */

#define MAKE_CLOSURE    134     /* same as MAKE_FUNCTION */
#define LOAD_CLOSURE    135     /* Load free variable from closure */
#define LOAD_DEREF      136     /* Load and dereference from closure cell */ 
#define STORE_DEREF     137     /* Store into cell */ 

/* The next 3 opcodes must be contiguous and satisfy
   (CALL_FUNCTION_VAR - CALL_FUNCTION) & 3 == 1  */
#define CALL_FUNCTION_VAR          140	/* #args + (#kwargs<<8) */
#define CALL_FUNCTION_KW           141	/* #args + (#kwargs<<8) */
#define CALL_FUNCTION_VAR_KW       142	/* #args + (#kwargs<<8) */

/* Support for opargs more than 16 bits long */
#define EXTENDED_ARG  143


enum cmp_op {PyCmp_LT=Py_LT, PyCmp_LE=Py_LE, PyCmp_EQ=Py_EQ, PyCmp_NE=Py_NE, PyCmp_GT=Py_GT, PyCmp_GE=Py_GE,
	     PyCmp_IN, PyCmp_NOT_IN, PyCmp_IS, PyCmp_IS_NOT, PyCmp_EXC_MATCH, PyCmp_BAD};

#define HAS_ARG(op) ((op) >= HAVE_ARGUMENT)

#ifdef __cplusplus
}
#endif
#endif /* !Py_OPCODE_H */
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