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/* ----------------------------------------------------------------------------
* $Id: InfoMacros.h,v 1.7 1999/06/25 09:13:37 simonmar Exp $
*
* (c) The GHC Team, 1998-1999
*
* Macros for building and deconstructing info tables.
*
* -------------------------------------------------------------------------- */
#ifndef INFOMACROS_H
#define INFOMACROS_H
#define STD_INFO(type_) \
srt : 0, \
srt_len : 0, \
type : type_
#define SRT_INFO(type_,srt_,srt_off_,srt_len_) \
srt : (StgSRT *)((StgClosure **)srt_+srt_off_), \
srt_len : srt_len_, \
type : type_
#ifdef USE_MINIINTERPRETER
#define INIT_VECTOR {}
#else
#define INIT_VECTOR
#endif
/* function/thunk info tables --------------------------------------------- */
#define \
INFO_TABLE_SRT(info, /* info-table label */ \
entry, /* entry code label */ \
ptrs, nptrs, /* closure layout info */\
srt_, srt_off_, srt_len_, /* SRT info */ \
type, /* closure type */ \
info_class, entry_class, /* C storage classes */ \
prof_descr, prof_type) /* profiling info */ \
entry_class(entry); \
info_class INFO_TBL_CONST StgInfoTable info = { \
layout : { payload : {ptrs,nptrs} }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(entry), \
INIT_VECTOR \
}
/* direct-return address info tables --------------------------------------*/
#define \
INFO_TABLE_SRT_BITMAP(info, entry, bitmap_, srt_, srt_off_, srt_len_, \
type, info_class, entry_class, \
prof_descr, prof_type) \
entry_class(entry); \
info_class INFO_TBL_CONST StgInfoTable info = { \
layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(entry), \
INIT_VECTOR \
}
/* info-table without an SRT -----------------------------------------------*/
#define \
INFO_TABLE(info, entry, ptrs, nptrs, type, info_class, \
entry_class, prof_descr, prof_type) \
entry_class(entry); \
info_class INFO_TBL_CONST StgInfoTable info = { \
layout : { payload : {ptrs,nptrs} }, \
STD_INFO(type), \
INIT_ENTRY(entry), \
INIT_VECTOR \
}
/* special selector-thunk info table ---------------------------------------*/
#define \
INFO_TABLE_SELECTOR(info, entry, offset, info_class, \
entry_class, prof_descr, prof_type) \
entry_class(entry); \
info_class INFO_TBL_CONST StgInfoTable info = { \
layout : { selector_offset : offset }, \
STD_INFO(THUNK_SELECTOR), \
INIT_ENTRY(entry), \
INIT_VECTOR \
}
/* constructor info table --------------------------------------------------*/
#define \
INFO_TABLE_CONSTR(info, entry, ptrs, nptrs, tag_,type_,info_class, \
entry_class, prof_descr, prof_type) \
entry_class(entry); \
info_class INFO_TBL_CONST StgInfoTable info = { \
layout : { payload : {ptrs,nptrs} }, \
srt_len : tag_, \
type : type_, \
INIT_ENTRY(entry), \
INIT_VECTOR \
}
#define constrTag(con) (get_itbl(con)->srt_len)
/* return-vectors ----------------------------------------------------------*/
/* vectored-return info tables have the vector slammed up against the
* start of the info table.
*
* A vectored-return address always has an SRT and a bitmap-style
* layout field, so we only need one macro for these.
*/
#ifdef TABLES_NEXT_TO_CODE
typedef struct {
StgFunPtr vec[2];
StgInfoTable i;
} vec_info_2;
typedef struct {
StgFunPtr vec[3];
StgInfoTable i;
} vec_info_3;
typedef struct {
StgFunPtr vec[4];
StgInfoTable i;
} vec_info_4;
typedef struct {
StgFunPtr vec[5];
StgInfoTable i;
} vec_info_5;
typedef struct {
StgFunPtr vec[6];
StgInfoTable i;
} vec_info_6;
typedef struct {
StgFunPtr vec[7];
StgInfoTable i;
} vec_info_7;
typedef struct {
StgFunPtr vec[8];
StgInfoTable i;
} vec_info_8;
#define VEC_INFO_2(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2) \
info_class INFO_TBL_CONST vec_info_2 info = { \
{ alt_2, alt_1 }, \
i : { \
layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_) \
} \
}
#define VEC_INFO_3(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3 \
) \
info_class INFO_TBL_CONST vec_info_3 info = { \
{ alt_3, alt_2, alt_1 }, \
i : { \
layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_) \
} \
}
#define VEC_INFO_4(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4 \
) \
info_class INFO_TBL_CONST vec_info_4 info = { \
{ alt_4, alt_3, alt_2, alt_1 }, \
i : { \
layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_) \
} \
}
#define VEC_INFO_5(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4, \
alt_5 \
) \
info_class INFO_TBL_CONST vec_info_5 info = { \
{ alt_5, alt_4, alt_3, alt_2, \
alt_1 }, \
i : { \
layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_) \
} \
}
#define VEC_INFO_6(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4, \
alt_5, alt_6 \
) \
info_class INFO_TBL_CONST vec_info_6 info = { \
{ alt_6, alt_5, alt_4, alt_3, \
alt_2, alt_1 }, \
i : { \
layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_) \
} \
}
#define VEC_INFO_7(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4, \
alt_5, alt_6, alt_7 \
) \
info_class INFO_TBL_CONST vec_info_7 info = { \
{ alt_7, alt_6, alt_5, alt_4, \
alt_3, alt_2, alt_1 }, \
i : { \
layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_) \
} \
}
#define VEC_INFO_8(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4, \
alt_5, alt_6, alt_7, alt_8 \
) \
info_class INFO_TBL_CONST vec_info_8 info = { \
{ alt_8, alt_7, alt_6, alt_5, \
alt_4, alt_3, alt_2, alt_1 }, \
i : { \
layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_) \
} \
}
#else
/* We have to define these structure to work around a bug in gcc: if we
* try to initialise the vector directly (it's defined as a zero-length
* array tacked on the end of the info table structor), then gcc silently
* throws away our vector table sometimes.
*/
typedef struct {
StgInfoTable i;
StgFunPtr vec[2];
} vec_info_2;
typedef struct {
StgInfoTable i;
StgFunPtr vec[3];
} vec_info_3;
typedef struct {
StgInfoTable i;
StgFunPtr vec[4];
} vec_info_4;
typedef struct {
StgInfoTable i;
StgFunPtr vec[5];
} vec_info_5;
typedef struct {
StgInfoTable i;
StgFunPtr vec[6];
} vec_info_6;
typedef struct {
StgInfoTable i;
StgFunPtr vec[7];
} vec_info_7;
typedef struct {
StgInfoTable i;
StgFunPtr vec[8];
} vec_info_8;
#define VEC_INFO_2(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2) \
info_class INFO_TBL_CONST vec_info_2 info = { \
i : { layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(NULL), \
}, \
vec : { alt_1, alt_2 } \
}
#define VEC_INFO_3(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3 \
) \
info_class INFO_TBL_CONST vec_info_3 info = { \
i : { layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(NULL), \
}, \
vec : { alt_1, alt_2, alt_3 } \
}
#define VEC_INFO_4(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4 \
) \
info_class INFO_TBL_CONST vec_info_4 info = { \
i : { layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(NULL), \
}, \
vec : { alt_1, alt_2, alt_3, alt_4 } \
}
#define VEC_INFO_5(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4, \
alt_5 \
) \
info_class INFO_TBL_CONST vec_info_5 info = { \
i : { layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(NULL), \
}, \
vec : { alt_1, alt_2, alt_3, alt_4, \
alt_5 } \
}
#define VEC_INFO_6(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4, \
alt_5, alt_6 \
) \
info_class INFO_TBL_CONST vec_info_6 info = { \
i : { layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(NULL), \
}, \
vec : { alt_1, alt_2, alt_3, alt_4, \
alt_5, alt_6 } \
}
#define VEC_INFO_7(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4, \
alt_5, alt_6, alt_7 \
) \
info_class INFO_TBL_CONST vec_info_7 info = { \
i : { layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(NULL), \
}, \
vec : { alt_1, alt_2, alt_3, alt_4, \
alt_5, alt_6, alt_7 } \
}
#define VEC_INFO_8(info,bitmap_,srt_,srt_off_,srt_len_, \
type, info_class, \
alt_1, alt_2, alt_3, alt_4, \
alt_5, alt_6, alt_7, alt_8 \
) \
info_class INFO_TBL_CONST vec_info_8 info = { \
i : { layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(NULL), \
}, \
vec : { alt_1, alt_2, alt_3, alt_4, \
alt_5, alt_6, alt_7, alt_8 } \
}
#endif /* TABLES_NEXT_TO_CODE */
/* For polymorphic activation records, we need both a direct return
* address and a return vector:
*/
typedef vec_info_8 StgPolyInfoTable;
#ifndef TABLES_NEXT_TO_CODE
#define VEC_POLY_INFO_TABLE(nm, bitmap_, \
srt_, srt_off_, srt_len_, \
type, info_class, entry_class \
) \
info_class INFO_TBL_CONST vec_info_8 nm##_info = { \
i : { layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(nm##_entry), \
INIT_VECTOR \
}, \
vec : { \
(F_) nm##_0_entry, \
(F_) nm##_1_entry, \
(F_) nm##_2_entry, \
(F_) nm##_3_entry, \
(F_) nm##_4_entry, \
(F_) nm##_5_entry, \
(F_) nm##_6_entry, \
(F_) nm##_7_entry \
} \
}
#else
#define VEC_POLY_INFO_TABLE(nm, bitmap_, \
srt_, srt_off_, srt_len_, \
type, info_class, entry_class \
) \
info_class INFO_TBL_CONST vec_info_8 nm##_info = { \
{ \
(F_) nm##_7_entry, \
(F_) nm##_6_entry, \
(F_) nm##_5_entry, \
(F_) nm##_4_entry, \
(F_) nm##_3_entry, \
(F_) nm##_2_entry, \
(F_) nm##_1_entry, \
(F_) nm##_0_entry \
}, \
i : { \
layout : { bitmap : (StgWord32)bitmap_ }, \
SRT_INFO(type,srt_,srt_off_,srt_len_), \
INIT_ENTRY(nm##_entry) \
} \
}
#endif
#define SRT(lbl) \
static const StgSRT lbl = {
#define BITMAP(lbl,size) \
static const StgLargeBitmap lbl = { size, {
/* DLL_SRT_ENTRY is used on the Win32 side when filling initialising
an entry in an SRT table with a reference to a closure that's
living in a DLL. See elsewhere for reasons as to why we need
to distinguish these kinds of references.
(ToDo: fill in a more precise href.)
*/
#ifdef HAVE_WIN32_DLL_SUPPORT
#define DLL_SRT_ENTRY(x) ((StgClosure*)(((char*)&DLL_IMPORT_DATA_VAR(x)) + 1))
#else
#define DLL_SRT_ENTRY(x) no-can-do
#endif
#endif /* INFOMACROS_H */
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