84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
|
/* segment.h
|
||
|
|
* Copyright 1984-2017 Cisco Systems, Inc.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef WIN32
|
||
|
|
# ifndef __MINGW32__
|
||
|
|
# undef FORCEINLINE
|
||
|
|
# define FORCEINLINE static __forceinline
|
||
|
|
# endif
|
||
|
|
#else
|
||
|
|
#define FORCEINLINE static inline
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* segment_info */
|
||
|
|
|
||
|
|
#define SEGMENT_T1_SIZE (1<<segment_t1_bits)
|
||
|
|
#define SEGMENT_T1_IDX(i) ((i)&(SEGMENT_T1_SIZE-1))
|
||
|
|
|
||
|
|
#ifdef segment_t3_bits
|
||
|
|
|
||
|
|
#define SEGMENT_T2_SIZE (1<<segment_t2_bits)
|
||
|
|
#define SEGMENT_T2_IDX(i) (((i)>>segment_t1_bits)&(SEGMENT_T2_SIZE-1))
|
||
|
|
#define SEGMENT_T3_SIZE (1<<segment_t3_bits)
|
||
|
|
#define SEGMENT_T3_IDX(i) ((i)>>(segment_t2_bits+segment_t1_bits))
|
||
|
|
|
||
|
|
FORCEINLINE seginfo *SegInfo(uptr i) {
|
||
|
|
return S_segment_info[SEGMENT_T3_IDX(i)]->t2[SEGMENT_T2_IDX(i)]->t1[SEGMENT_T1_IDX(i)];
|
||
|
|
}
|
||
|
|
|
||
|
|
FORCEINLINE seginfo *MaybeSegInfo(uptr i) {
|
||
|
|
t2table *t2i; t1table *t1i;
|
||
|
|
if ((t2i = S_segment_info[SEGMENT_T3_IDX(i)]) == NULL) return NULL;
|
||
|
|
if ((t1i = t2i->t2[SEGMENT_T2_IDX(i)]) == NULL) return NULL;
|
||
|
|
return t1i->t1[SEGMENT_T1_IDX(i)];
|
||
|
|
}
|
||
|
|
|
||
|
|
#else /* segment_t3_bits */
|
||
|
|
#ifdef segment_t2_bits
|
||
|
|
|
||
|
|
#define SEGMENT_T2_SIZE (1<<segment_t2_bits)
|
||
|
|
#define SEGMENT_T2_IDX(i) ((i)>>segment_t1_bits)
|
||
|
|
#define SEGMENT_T3_SIZE 0
|
||
|
|
|
||
|
|
FORCEINLINE seginfo *SegInfo(uptr i) {
|
||
|
|
return S_segment_info[SEGMENT_T2_IDX(i)]->t1[SEGMENT_T1_IDX(i)];
|
||
|
|
}
|
||
|
|
|
||
|
|
FORCEINLINE seginfo *MaybeSegInfo(uptr i) {
|
||
|
|
t1table *t1i;
|
||
|
|
if ((t1i = S_segment_info[SEGMENT_T2_IDX(i)]) == NULL) return NULL;
|
||
|
|
return t1i->t1[SEGMENT_T1_IDX(i)];
|
||
|
|
}
|
||
|
|
|
||
|
|
#else /* segment_t2_bits */
|
||
|
|
|
||
|
|
#define SEGMENT_T2_SIZE 0
|
||
|
|
#define SEGMENT_T3_SIZE 0
|
||
|
|
|
||
|
|
FORCEINLINE seginfo *SegInfo(uptr i) {
|
||
|
|
return S_segment_info[SEGMENT_T1_IDX(i)];
|
||
|
|
}
|
||
|
|
|
||
|
|
FORCEINLINE seginfo *MaybeSegInfo(uptr i) {
|
||
|
|
return S_segment_info[SEGMENT_T1_IDX(i)];
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* segment_t2_bits */
|
||
|
|
#endif /* segment_t3_bits */
|
||
|
|
|
||
|
|
#define SegmentSpace(i) (SegInfo(i)->space)
|
||
|
|
#define SegmentGeneration(i) (SegInfo(i)->generation)
|