diff options
Diffstat (limited to 'gcc/obstack.h')
| -rw-r--r-- | gcc/obstack.h | 184 |
1 files changed, 110 insertions, 74 deletions
diff --git a/gcc/obstack.h b/gcc/obstack.h index 5ad3e5ef12b..3edd3f4285e 100644 --- a/gcc/obstack.h +++ b/gcc/obstack.h @@ -1,19 +1,25 @@ /* obstack.h - object stack macros Copyright (C) 1988,89,90,91,92,93,94,96,97 Free Software Foundation, Inc. -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) any -later version. + the C library, however. The master source lives in /gd/gnu/lib. -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + NOTE: The canonical source of this file is maintained with the GNU C Library. + Bugs can be reported to bug-glibc@prep.ai.mit.edu. -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 2, or (at your option) any + later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, + USA. */ /* Summary: @@ -100,8 +106,12 @@ Summary: /* Don't do the contents of this file more than once. */ -#ifndef __OBSTACK_H__ -#define __OBSTACK_H__ +#ifndef _OBSTACK_H +#define _OBSTACK_H 1 + +#ifdef __cplusplus +extern "C" { +#endif /* We use subtraction of (char *) 0 instead of casting to int because on word-addressable machines a simple cast to int @@ -138,6 +148,17 @@ Summary: #define PTR_INT_TYPE long #endif +#if defined (_LIBC) || defined (HAVE_STRING_H) +#include <string.h> +#define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N)) +#else +#ifdef memcpy +#define _obstack_memcpy(To, From, N) memcpy ((To), (From), (N)) +#else +#define _obstack_memcpy(To, From, N) bcopy ((From), (To), (N)) +#endif +#endif + struct _obstack_chunk /* Lives at front of each chunk. */ { char *limit; /* 1 past end of this chunk */ @@ -171,7 +192,9 @@ struct obstack /* control current object in current chunk */ chunk contains a zero-length object. This prevents freeing the chunk if we allocate a bigger chunk to replace it. */ - unsigned alloc_failed:1; /* chunk alloc func returned 0 */ + unsigned alloc_failed:1; /* No longer used, as we now call the failed + handler on error, but retained for binary + compatibility. */ }; /* Declare the external functions we use; they are in obstack.c. */ @@ -184,11 +207,13 @@ extern int _obstack_begin (struct obstack *, int, int, extern int _obstack_begin_1 (struct obstack *, int, int, void *(*) (void *, long), void (*) (void *, void *), void *); +extern int _obstack_memory_used (struct obstack *); #else extern void _obstack_newchunk (); extern void _obstack_free (); extern int _obstack_begin (); extern int _obstack_begin_1 (); +extern int _obstack_memory_used (); #endif #if defined (__STDC__) && __STDC__ @@ -219,6 +244,7 @@ void * obstack_finish (struct obstack *obstack); int obstack_object_size (struct obstack *obstack); int obstack_room (struct obstack *obstack); +void obstack_make_room (struct obstack *obstack, int size); void obstack_1grow_fast (struct obstack *obstack, int data_char); void obstack_ptr_grow_fast (struct obstack *obstack, void *data); void obstack_int_grow_fast (struct obstack *obstack, int data); @@ -228,17 +254,30 @@ void * obstack_base (struct obstack *obstack); void * obstack_next_free (struct obstack *obstack); int obstack_alignment_mask (struct obstack *obstack); int obstack_chunk_size (struct obstack *obstack); +int obstack_memory_used (struct obstack *obstack); #endif /* __STDC__ */ /* Non-ANSI C cannot really support alternative functions for these macros, so we do not declare them. */ + +/* Error handler called when `obstack_chunk_alloc' failed to allocate + more memory. This can be set to a user defined function. The + default action is to print a message and abort. */ +#if defined (__STDC__) && __STDC__ +extern void (*obstack_alloc_failed_handler) (void); +#else +extern void (*obstack_alloc_failed_handler) (); +#endif + +/* Exit value used when `print_and_abort' is used. */ +extern int obstack_exit_failure; /* Pointer to beginning of object being allocated or to be allocated next. Note that this might not be the final address of the object because a new chunk might be needed to hold the final size. */ -#define obstack_base(h) ((h)->alloc_failed ? 0 : (h)->object_base) +#define obstack_base(h) ((h)->object_base) /* Size for allocating ordinary chunks. */ @@ -246,7 +285,7 @@ int obstack_chunk_size (struct obstack *obstack); /* Pointer to next byte not yet allocated in current chunk. */ -#define obstack_next_free(h) ((h)->alloc_failed ? 0 : (h)->next_free) +#define obstack_next_free(h) ((h)->next_free) /* Mask specifying low bits that should be clear in address of an object. */ @@ -270,13 +309,14 @@ int obstack_chunk_size (struct obstack *obstack); #define obstack_specify_allocation_with_arg(h, size, alignment, chunkfun, freefun, arg) \ _obstack_begin_1 ((h), (size), (alignment), \ - (void *(*) (long)) (chunkfun), (void (*) (void *)) (freefun), (arg)) + (void *(*) (void *, long)) (chunkfun), \ + (void (*) (void *, void *)) (freefun), (arg)) #define obstack_chunkfun(h, newchunkfun) \ - ((h) -> chunkfun = (struct _obstack_chunk *(*)(long)) (newchunkfun)) + ((h) -> chunkfun = (struct _obstack_chunk *(*)(void *, long)) (newchunkfun)) #define obstack_freefun(h, newfreefun) \ - ((h) -> freefun = (void (*)(void *)) (newfreefun)) + ((h) -> freefun = (void (*)(void *, struct _obstack_chunk *)) (newfreefun)) #else @@ -307,6 +347,8 @@ int obstack_chunk_size (struct obstack *obstack); #define obstack_1grow_fast(h,achar) (*((h)->next_free)++ = achar) #define obstack_blank_fast(h,n) ((h)->next_free += (n)) + +#define obstack_memory_used(h) _obstack_memory_used (h) #if defined (__GNUC__) && defined (__STDC__) && __STDC__ /* NextStep 2.0 cc is really gcc 1.93 but it defines __GNUC__ = 2 and @@ -324,7 +366,6 @@ int obstack_chunk_size (struct obstack *obstack); #define obstack_object_size(OBSTACK) \ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ - __o->alloc_failed ? 0 : \ (unsigned) (__o->next_free - __o->object_base); }) #define obstack_room(OBSTACK) \ @@ -332,6 +373,14 @@ int obstack_chunk_size (struct obstack *obstack); ({ struct obstack *__o = (OBSTACK); \ (unsigned) (__o->chunk_limit - __o->next_free); }) +#define obstack_make_room(OBSTACK,length) \ +__extension__ \ +({ struct obstack *__o = (OBSTACK); \ + int __len = (length); \ + if (__o->chunk_limit - __o->next_free < __len) \ + _obstack_newchunk (__o, __len); \ + (void) 0; }) + #define obstack_empty_p(OBSTACK) \ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ @@ -343,11 +392,8 @@ __extension__ \ int __len = (length); \ if (__o->next_free + __len > __o->chunk_limit) \ _obstack_newchunk (__o, __len); \ - if (!__o->alloc_failed) \ - { \ - bcopy ((char *) (where), __o->next_free, __len); \ - __o->next_free += __len; \ - } \ + _obstack_memcpy (__o->next_free, (char *) (where), __len); \ + __o->next_free += __len; \ (void) 0; }) #define obstack_grow0(OBSTACK,where,length) \ @@ -356,12 +402,9 @@ __extension__ \ int __len = (length); \ if (__o->next_free + __len + 1 > __o->chunk_limit) \ _obstack_newchunk (__o, __len + 1); \ - if (!__o->alloc_failed) \ - { \ - bcopy ((char *) (where), __o->next_free, __len); \ - __o->next_free += __len; \ - *(__o->next_free)++ = 0; \ - } \ + _obstack_memcpy (__o->next_free, (char *) (where), __len); \ + __o->next_free += __len; \ + *(__o->next_free)++ = 0; \ (void) 0; }) #define obstack_1grow(OBSTACK,datum) \ @@ -369,8 +412,7 @@ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ if (__o->next_free + 1 > __o->chunk_limit) \ _obstack_newchunk (__o, 1); \ - if (!__o->alloc_failed) \ - *(__o->next_free)++ = (datum); \ + *(__o->next_free)++ = (datum); \ (void) 0; }) /* These assume that the obstack alignment is good enough for pointers or ints, @@ -382,8 +424,7 @@ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ if (__o->next_free + sizeof (void *) > __o->chunk_limit) \ _obstack_newchunk (__o, sizeof (void *)); \ - if (!__o->alloc_failed) \ - *((void **)__o->next_free)++ = ((void *)datum); \ + *((void **)__o->next_free)++ = ((void *)datum); \ (void) 0; }) #define obstack_int_grow(OBSTACK,datum) \ @@ -391,8 +432,7 @@ __extension__ \ ({ struct obstack *__o = (OBSTACK); \ if (__o->next_free + sizeof (int) > __o->chunk_limit) \ _obstack_newchunk (__o, sizeof (int)); \ - if (!__o->alloc_failed) \ - *((int *)__o->next_free)++ = ((int)datum); \ + *((int *)__o->next_free)++ = ((int)datum); \ (void) 0; }) #define obstack_ptr_grow_fast(h,aptr) (*((void **) (h)->next_free)++ = (void *)aptr) @@ -404,8 +444,7 @@ __extension__ \ int __len = (length); \ if (__o->chunk_limit - __o->next_free < __len) \ _obstack_newchunk (__o, __len); \ - if (!__o->alloc_failed) \ - __o->next_free += __len; \ + __o->next_free += __len; \ (void) 0; }) #define obstack_alloc(OBSTACK,length) \ @@ -432,21 +471,16 @@ __extension__ \ __extension__ \ ({ struct obstack *__o1 = (OBSTACK); \ void *value; \ - if (__o1->alloc_failed) \ - value = 0; \ - else \ - { \ - value = (void *) __o1->object_base; \ - if (__o1->next_free == value) \ - __o1->maybe_empty_object = 1; \ - __o1->next_free \ - = __INT_TO_PTR ((__PTR_TO_INT (__o1->next_free)+__o1->alignment_mask)\ - & ~ (__o1->alignment_mask)); \ - if (__o1->next_free - (char *)__o1->chunk \ - > __o1->chunk_limit - (char *)__o1->chunk) \ - __o1->next_free = __o1->chunk_limit; \ - __o1->object_base = __o1->next_free; \ - } \ + value = (void *) __o1->object_base; \ + if (__o1->next_free == value) \ + __o1->maybe_empty_object = 1; \ + __o1->next_free \ + = __INT_TO_PTR ((__PTR_TO_INT (__o1->next_free)+__o1->alignment_mask)\ + & ~ (__o1->alignment_mask)); \ + if (__o1->next_free - (char *)__o1->chunk \ + > __o1->chunk_limit - (char *)__o1->chunk) \ + __o1->next_free = __o1->chunk_limit; \ + __o1->object_base = __o1->next_free; \ value; }) #define obstack_free(OBSTACK, OBJ) \ @@ -460,7 +494,7 @@ __extension__ \ #else /* not __GNUC__ or not __STDC__ */ #define obstack_object_size(h) \ - (unsigned) ((h)->alloc_failed ? 0 : (h)->next_free - (h)->object_base) + (unsigned) ((h)->next_free - (h)->object_base) #define obstack_room(h) \ (unsigned) ((h)->chunk_limit - (h)->next_free) @@ -474,40 +508,40 @@ __extension__ \ Casting the third operand to void was tried before, but some compilers won't accept it. */ +#define obstack_make_room(h,length) \ +( (h)->temp = (length), \ + (((h)->next_free + (h)->temp > (h)->chunk_limit) \ + ? (_obstack_newchunk ((h), (h)->temp), 0) : 0)) + #define obstack_grow(h,where,length) \ ( (h)->temp = (length), \ (((h)->next_free + (h)->temp > (h)->chunk_limit) \ ? (_obstack_newchunk ((h), (h)->temp), 0) : 0), \ - ((h)->alloc_failed ? 0 : \ - (bcopy ((char *) (where), (h)->next_free, (h)->temp), \ - (h)->next_free += (h)->temp))) + _obstack_memcpy ((h)->next_free, (char *) (where), (h)->temp), \ + (h)->next_free += (h)->temp) #define obstack_grow0(h,where,length) \ ( (h)->temp = (length), \ (((h)->next_free + (h)->temp + 1 > (h)->chunk_limit) \ ? (_obstack_newchunk ((h), (h)->temp + 1), 0) : 0), \ - ((h)->alloc_failed ? 0 : \ - (bcopy ((char *) (where), (h)->next_free, (h)->temp), \ + _obstack_memcpy ((h)->next_free, (char *) (where), (h)->temp), \ (h)->next_free += (h)->temp, \ - *((h)->next_free)++ = 0))) + *((h)->next_free)++ = 0) #define obstack_1grow(h,datum) \ ( (((h)->next_free + 1 > (h)->chunk_limit) \ ? (_obstack_newchunk ((h), 1), 0) : 0), \ - ((h)->alloc_failed ? 0 : \ - (*((h)->next_free)++ = (datum)))) + (*((h)->next_free)++ = (datum))) #define obstack_ptr_grow(h,datum) \ ( (((h)->next_free + sizeof (char *) > (h)->chunk_limit) \ ? (_obstack_newchunk ((h), sizeof (char *)), 0) : 0), \ - ((h)->alloc_failed ? 0 : \ - (*((char **) (((h)->next_free+=sizeof(char *))-sizeof(char *))) = ((char *) datum)))) + (*((char **) (((h)->next_free+=sizeof(char *))-sizeof(char *))) = ((char *) datum))) #define obstack_int_grow(h,datum) \ ( (((h)->next_free + sizeof (int) > (h)->chunk_limit) \ ? (_obstack_newchunk ((h), sizeof (int)), 0) : 0), \ - ((h)->alloc_failed ? 0 : \ - (*((int *) (((h)->next_free+=sizeof(int))-sizeof(int))) = ((int) datum)))) + (*((int *) (((h)->next_free+=sizeof(int))-sizeof(int))) = ((int) datum))) #define obstack_ptr_grow_fast(h,aptr) (*((char **) (h)->next_free)++ = (char *) aptr) #define obstack_int_grow_fast(h,aint) (*((int *) (h)->next_free)++ = (int) aint) @@ -516,8 +550,7 @@ __extension__ \ ( (h)->temp = (length), \ (((h)->chunk_limit - (h)->next_free < (h)->temp) \ ? (_obstack_newchunk ((h), (h)->temp), 0) : 0), \ - ((h)->alloc_failed ? 0 : \ - ((h)->next_free += (h)->temp))) + ((h)->next_free += (h)->temp)) #define obstack_alloc(h,length) \ (obstack_blank ((h), (length)), obstack_finish ((h))) @@ -529,19 +562,18 @@ __extension__ \ (obstack_grow0 ((h), (where), (length)), obstack_finish ((h))) #define obstack_finish(h) \ -( (h)->alloc_failed ? 0 : \ - (((h)->next_free == (h)->object_base \ +( ((h)->next_free == (h)->object_base \ ? (((h)->maybe_empty_object = 1), 0) \ : 0), \ (h)->temp = __PTR_TO_INT ((h)->object_base), \ (h)->next_free \ = __INT_TO_PTR ((__PTR_TO_INT ((h)->next_free)+(h)->alignment_mask) \ & ~ ((h)->alignment_mask)), \ - (((h)->next_free - (char *) (h)->chunk \ + (((h)->next_free - (char *) (h)->chunk \ > (h)->chunk_limit - (char *) (h)->chunk) \ ? ((h)->next_free = (h)->chunk_limit) : 0), \ (h)->object_base = (h)->next_free, \ - __INT_TO_PTR ((h)->temp))) + __INT_TO_PTR ((h)->temp)) #if defined (__STDC__) && __STDC__ #define obstack_free(h,obj) \ @@ -561,4 +593,8 @@ __extension__ \ #endif /* not __GNUC__ or not __STDC__ */ -#endif /* not __OBSTACK_H__ */ +#ifdef __cplusplus +} /* C++ */ +#endif + +#endif /* obstack.h */ |