-
- /* If the file is not empty, and the number of counts in it is the
- same, then merge them in. */
- firstchar = fgetc (da_file);
- if (firstchar == EOF)
- {
- if (ferror (da_file))
- {
- fprintf (stderr, "arc profiling: Can't read output file ");
- perror (ptr->filename);
- }
- }
- else
- {
- long n_counts = 0;
-
- if (ungetc (firstchar, da_file) == EOF)
- rewind (da_file);
- if (__read_long (&n_counts, da_file, 8) != 0)
- {
- fprintf (stderr, "arc profiling: Can't read output file %s.\n",
- ptr->filename);
- continue;
- }
-
- if (n_counts == ptr->ncounts)
- {
- int i;
-
- for (i = 0; i < n_counts; i++)
- {
- long v = 0;
-
- if (__read_long (&v, da_file, 8) != 0)
- {
- fprintf (stderr, "arc profiling: Can't read output file %s.\n",
- ptr->filename);
- break;
- }
- ptr->counts[i] += v;
- }
- }
-
- }
-
- rewind (da_file);
-
- /* ??? Should first write a header to the file. Preferably, a 4 byte
- magic number, 4 bytes containing the time the program was
- compiled, 4 bytes containing the last modification time of the
- source file, and 4 bytes indicating the compiler options used.
-
- That way we can easily verify that the proper source/executable/
- data file combination is being used from gcov. */
-
- if (__write_long (ptr->ncounts, da_file, 8) != 0)
- {
-
- fprintf (stderr, "arc profiling: Error writing output file %s.\n",
- ptr->filename);
- }
- else
- {
- int j;
- long *count_ptr = ptr->counts;
- int ret = 0;
- for (j = ptr->ncounts; j > 0; j--)
- {
- if (__write_long (*count_ptr, da_file, 8) != 0)
- {
- ret=1;
- break;
- }
- count_ptr++;
- }
- if (ret)
- fprintf (stderr, "arc profiling: Error writing output file %s.\n",
- ptr->filename);
- }
-
- if (fclose (da_file) == EOF)
- fprintf (stderr, "arc profiling: Error closing output file %s.\n",
- ptr->filename);
- }
-
- return;
- }
-
- /* Must be basic block profiling. Emit a human readable output file. */
-
- file = fopen ("bb.out", "a");
-
- if (!file)
- perror ("bb.out");
-
- else
- {
- struct bb *ptr;
-
- /* This is somewhat type incorrect, but it avoids worrying about
- exactly where time.h is included from. It should be ok unless
- a void * differs from other pointer formats, or if sizeof (long)
- is < sizeof (time_t). It would be nice if we could assume the
- use of rationale standards here. */
-
- time ((void *) &time_value);
- fprintf (file, "Basic block profiling finished on %s\n", ctime ((void *) &time_value));
-
- /* We check the length field explicitly in order to allow compatibility
- with older GCC's which did not provide it. */
-
- for (ptr = bb_head; ptr != (struct bb *) 0; ptr = ptr->next)
- {
- int i;
- int func_p = (ptr->nwords >= (long) sizeof (struct bb)
- && ptr->nwords <= 1000
- && ptr->functions);
- int line_p = (func_p && ptr->line_nums);
- int file_p = (func_p && ptr->filenames);
- int addr_p = (ptr->addresses != 0);
- long ncounts = ptr->ncounts;
- long cnt_max = 0;
- long line_max = 0;
- long addr_max = 0;
- int file_len = 0;
- int func_len = 0;
- int blk_len = num_digits (ncounts, 10);
- int cnt_len;
- int line_len;
- int addr_len;
-
- fprintf (file, "File %s, %ld basic blocks \n\n",
- ptr->filename, ncounts);
-
- /* Get max values for each field. */
- for (i = 0; i < ncounts; i++)
- {
- const char *p;
- int len;
-
- if (cnt_max < ptr->counts[i])
- cnt_max = ptr->counts[i];
-
- if (addr_p && (unsigned long) addr_max < ptr->addresses[i])
- addr_max = ptr->addresses[i];
-
- if (line_p && line_max < ptr->line_nums[i])
- line_max = ptr->line_nums[i];
-
- if (func_p)
- {
- p = (ptr->functions[i]) ? (ptr->functions[i]) : "<none>";
- len = strlen (p);
- if (func_len < len)
- func_len = len;
- }
-
- if (file_p)
- {
- p = (ptr->filenames[i]) ? (ptr->filenames[i]) : "<none>";
- len = strlen (p);
- if (file_len < len)
- file_len = len;
- }
- }
-
- addr_len = num_digits (addr_max, 16);
- cnt_len = num_digits (cnt_max, 10);
- line_len = num_digits (line_max, 10);
-
- /* Now print out the basic block information. */
- for (i = 0; i < ncounts; i++)
- {
- fprintf (file,
- " Block #%*d: executed %*ld time(s)",
- blk_len, i+1,
- cnt_len, ptr->counts[i]);
-
- if (addr_p)
- fprintf (file, " address= 0x%.*lx", addr_len,
- ptr->addresses[i]);
-
- if (func_p)
- fprintf (file, " function= %-*s", func_len,
- (ptr->functions[i]) ? ptr->functions[i] : "<none>");
-
- if (line_p)
- fprintf (file, " line= %*ld", line_len, ptr->line_nums[i]);
-
- if (file_p)
- fprintf (file, " file= %s",
- (ptr->filenames[i]) ? ptr->filenames[i] : "<none>");
-
- fprintf (file, "\n");
- }
-
- fprintf (file, "\n");
- fflush (file);
- }
-
- fprintf (file, "\n\n");
- fclose (file);
- }
-}
-
-void
-__bb_init_func (struct bb *blocks)
-{
- /* User is supposed to check whether the first word is non-0,
- but just in case.... */
-
- if (blocks->zero_word)
- return;
-
- /* Initialize destructor. */
- if (!bb_head)
- atexit (__bb_exit_func);
-
- /* Set up linked list. */
- blocks->zero_word = 1;
- blocks->next = bb_head;
- bb_head = blocks;
-}
-
-/* Called before fork or exec - write out profile information gathered so
- far and reset it to zero. This avoids duplication or loss of the
- profile information gathered so far. */
-void
-__bb_fork_func (void)
-{
- struct bb *ptr;
-
- __bb_exit_func ();
- for (ptr = bb_head; ptr != (struct bb *) 0; ptr = ptr->next)
- {
- long i;
- for (i = ptr->ncounts - 1; i >= 0; i--)
- ptr->counts[i] = 0;
- }
-}
-
-#ifndef MACHINE_STATE_SAVE
-#define MACHINE_STATE_SAVE(ID)
-#endif
-#ifndef MACHINE_STATE_RESTORE
-#define MACHINE_STATE_RESTORE(ID)
-#endif
-
-/* Number of buckets in hashtable of basic block addresses. */
-
-#define BB_BUCKETS 311
-
-/* Maximum length of string in file bb.in. */
-
-#define BBINBUFSIZE 500
-
-struct bb_edge
-{
- struct bb_edge *next;
- unsigned long src_addr;
- unsigned long dst_addr;
- unsigned long count;
-};
-
-enum bb_func_mode
-{
- TRACE_KEEP = 0, TRACE_ON = 1, TRACE_OFF = 2
-};
-
-struct bb_func
-{
- struct bb_func *next;
- char *funcname;
- char *filename;
- enum bb_func_mode mode;
-};
-
-/* This is the connection to the outside world.
- The BLOCK_PROFILER macro must set __bb.blocks
- and __bb.blockno. */
-
-struct {
- unsigned long blockno;
- struct bb *blocks;
-} __bb;
-
-/* Vars to store addrs of source and destination basic blocks
- of a jump. */
-
-static unsigned long bb_src = 0;
-static unsigned long bb_dst = 0;
-
-static FILE *bb_tracefile = (FILE *) 0;
-static struct bb_edge **bb_hashbuckets = (struct bb_edge **) 0;
-static struct bb_func *bb_func_head = (struct bb_func *) 0;
-static unsigned long bb_callcount = 0;
-static int bb_mode = 0;
-
-static unsigned long *bb_stack = (unsigned long *) 0;
-static size_t bb_stacksize = 0;
-
-static int reported = 0;
-
-/* Trace modes:
-Always : Print execution frequencies of basic blocks
- to file bb.out.
-bb_mode & 1 != 0 : Dump trace of basic blocks to file bbtrace[.gz]
-bb_mode & 2 != 0 : Print jump frequencies to file bb.out.
-bb_mode & 4 != 0 : Cut call instructions from basic block flow.
-bb_mode & 8 != 0 : Insert return instructions in basic block flow.
-*/
-
-#ifdef HAVE_POPEN
-
-/*#include <sys/types.h>*/
-#include <sys/stat.h>
-/*#include <malloc.h>*/
-
-/* Commands executed by gopen. */
-
-#define GOPENDECOMPRESS "gzip -cd "
-#define GOPENCOMPRESS "gzip -c >"
-
-/* Like fopen but pipes through gzip. mode may only be "r" or "w".
- If it does not compile, simply replace gopen by fopen and delete
- '.gz' from any first parameter to gopen. */
-
-static FILE *
-gopen (char *fn, char *mode)
-{
- int use_gzip;
- char *p;
-
- if (mode[1])
- return (FILE *) 0;
-
- if (mode[0] != 'r' && mode[0] != 'w')
- return (FILE *) 0;
-
- p = fn + strlen (fn)-1;
- use_gzip = ((p[-1] == '.' && (p[0] == 'Z' || p[0] == 'z'))
- || (p[-2] == '.' && p[-1] == 'g' && p[0] == 'z'));
-
- if (use_gzip)
- {
- if (mode[0]=='r')
- {
- FILE *f;
- char *s = (char *) malloc (sizeof (char) * strlen (fn)
- + sizeof (GOPENDECOMPRESS));
- strcpy (s, GOPENDECOMPRESS);
- strcpy (s + (sizeof (GOPENDECOMPRESS)-1), fn);
- f = popen (s, mode);
- free (s);
- return f;
- }
-
- else
- {
- FILE *f;
- char *s = (char *) malloc (sizeof (char) * strlen (fn)
- + sizeof (GOPENCOMPRESS));
- strcpy (s, GOPENCOMPRESS);
- strcpy (s + (sizeof (GOPENCOMPRESS)-1), fn);
- if (!(f = popen (s, mode)))
- f = fopen (s, mode);
- free (s);
- return f;
- }
- }
-
- else
- return fopen (fn, mode);
-}
-
-static int
-gclose (FILE *f)
-{
- struct stat buf;
-
- if (f != 0)
- {
- if (!fstat (fileno (f), &buf) && S_ISFIFO (buf.st_mode))
- return pclose (f);
-
- return fclose (f);
- }
- return 0;
-}
-
-#endif /* HAVE_POPEN */
-
-/* Called once per program. */
-
-static void
-__bb_exit_trace_func (void)
-{
- FILE *file = fopen ("bb.out", "a");
- struct bb_func *f;
- struct bb *b;
-
- if (!file)
- perror ("bb.out");
-
- if (bb_mode & 1)
- {
- if (!bb_tracefile)
- perror ("bbtrace");
- else
-#ifdef HAVE_POPEN
- gclose (bb_tracefile);
-#else
- fclose (bb_tracefile);
-#endif /* HAVE_POPEN */
- }
-
- /* Check functions in `bb.in'. */
-
- if (file)
- {
- long time_value;
- const struct bb_func *p;
- int printed_something = 0;
- struct bb *ptr;
- long blk;
-
- /* This is somewhat type incorrect. */
- time ((void *) &time_value);
-
- for (p = bb_func_head; p != (struct bb_func *) 0; p = p->next)
- {
- for (ptr = bb_head; ptr != (struct bb *) 0; ptr = ptr->next)
- {
- if (!ptr->filename || (p->filename != (char *) 0 && strcmp (p->filename, ptr->filename)))
- continue;
- for (blk = 0; blk < ptr->ncounts; blk++)
- {
- if (!strcmp (p->funcname, ptr->functions[blk]))
- goto found;
- }
- }
-
- if (!printed_something)
- {
- fprintf (file, "Functions in `bb.in' not executed during basic block profiling on %s\n", ctime ((void *) &time_value));
- printed_something = 1;
- }
-
- fprintf (file, "\tFunction %s", p->funcname);
- if (p->filename)
- fprintf (file, " of file %s", p->filename);
- fprintf (file, "\n" );
-
-found: ;
- }
-
- if (printed_something)
- fprintf (file, "\n");
-
- }
-
- if (bb_mode & 2)
- {
- if (!bb_hashbuckets)
- {
- if (!reported)
- {
- fprintf (stderr, "Profiler: out of memory\n");
- reported = 1;
- }
- return;
- }
-
- else if (file)
- {
- long time_value;
- int i;
- unsigned long addr_max = 0;
- unsigned long cnt_max = 0;
- int cnt_len;
- int addr_len;
-
- /* This is somewhat type incorrect, but it avoids worrying about
- exactly where time.h is included from. It should be ok unless
- a void * differs from other pointer formats, or if sizeof (long)
- is < sizeof (time_t). It would be nice if we could assume the
- use of rationale standards here. */
-
- time ((void *) &time_value);
- fprintf (file, "Basic block jump tracing");
-
- switch (bb_mode & 12)
- {
- case 0:
- fprintf (file, " (with call)");
- break;
-
- case 4:
- /* Print nothing. */
- break;
-
- case 8:
- fprintf (file, " (with call & ret)");
- break;
-
- case 12:
- fprintf (file, " (with ret)");
- break;
- }
-
- fprintf (file, " finished on %s\n", ctime ((void *) &time_value));
-
- for (i = 0; i < BB_BUCKETS; i++)
- {
- struct bb_edge *bucket = bb_hashbuckets[i];
- for ( ; bucket; bucket = bucket->next )
- {
- if (addr_max < bucket->src_addr)
- addr_max = bucket->src_addr;
- if (addr_max < bucket->dst_addr)
- addr_max = bucket->dst_addr;
- if (cnt_max < bucket->count)
- cnt_max = bucket->count;
- }
- }
- addr_len = num_digits (addr_max, 16);
- cnt_len = num_digits (cnt_max, 10);
-
- for ( i = 0; i < BB_BUCKETS; i++)
- {
- struct bb_edge *bucket = bb_hashbuckets[i];
- for ( ; bucket; bucket = bucket->next )
- {
- fprintf (file,
- "Jump from block 0x%.*lx to block 0x%.*lx executed %*lu time(s)\n",
- addr_len, bucket->src_addr,
- addr_len, bucket->dst_addr,
- cnt_len, bucket->count);
- }
- }
-
- fprintf (file, "\n");
-
- }
- }
-
- if (file)
- fclose (file);
-
- /* Free allocated memory. */
-
- f = bb_func_head;
- while (f)
- {
- struct bb_func *old = f;
-
- f = f->next;
- if (old->funcname) free (old->funcname);
- if (old->filename) free (old->filename);
- free (old);
- }
-
- if (bb_stack)
- free (bb_stack);
-
- if (bb_hashbuckets)
- {
- int i;
-
- for (i = 0; i < BB_BUCKETS; i++)
- {
- struct bb_edge *old, *bucket = bb_hashbuckets[i];
-
- while (bucket)
- {
- old = bucket;
- bucket = bucket->next;
- free (old);
- }
- }
- free (bb_hashbuckets);
- }
-
- for (b = bb_head; b; b = b->next)
- if (b->flags) free (b->flags);
-}
-
-/* Called once per program. */
-
-static void
-__bb_init_prg (void)
-{
- FILE *file;
- char buf[BBINBUFSIZE];
- const char *p;
- const char *pos;
- enum bb_func_mode m;
- int i;
-
- /* Initialize destructor. */
- atexit (__bb_exit_func);
-
- if (!(file = fopen ("bb.in", "r")))
- return;
-
- while(fgets (buf, BBINBUFSIZE, file) != 0)
- {
- i = strlen (buf);
- if (buf[i] == '\n')
- buf[i--] = '\0';
-
- p = buf;
- if (*p == '-')
- {
- m = TRACE_OFF;
- p++;
- }
- else
- {
- m = TRACE_ON;
- }
- if (!strcmp (p, "__bb_trace__"))
- bb_mode |= 1;
- else if (!strcmp (p, "__bb_jumps__"))
- bb_mode |= 2;
- else if (!strcmp (p, "__bb_hidecall__"))
- bb_mode |= 4;
- else if (!strcmp (p, "__bb_showret__"))
- bb_mode |= 8;
- else
- {
- struct bb_func *f = (struct bb_func *) malloc (sizeof (struct bb_func));
- if (f)
- {
- unsigned long l;
- f->next = bb_func_head;
- if ((pos = strchr (p, ':')))
- {
- if (!(f->funcname = (char *) malloc (strlen (pos+1)+1)))
- continue;
- strcpy (f->funcname, pos+1);
- l = pos-p;
- if ((f->filename = (char *) malloc (l+1)))
- {
- strncpy (f->filename, p, l);
- f->filename[l] = '\0';
- }
- else
- f->filename = (char *) 0;
- }
- else
- {
- if (!(f->funcname = (char *) malloc (strlen (p)+1)))
- continue;
- strcpy (f->funcname, p);
- f->filename = (char *) 0;
- }
- f->mode = m;
- bb_func_head = f;
- }
- }
- }
- fclose (file);
-
-#ifdef HAVE_POPEN
-
- if (bb_mode & 1)
- bb_tracefile = gopen ("bbtrace.gz", "w");
-
-#else
-
- if (bb_mode & 1)
- bb_tracefile = fopen ("bbtrace", "w");
-
-#endif /* HAVE_POPEN */
-
- if (bb_mode & 2)
- {
- bb_hashbuckets = (struct bb_edge **)
- malloc (BB_BUCKETS * sizeof (struct bb_edge *));
- if (bb_hashbuckets)
- /* Use a loop here rather than calling bzero to avoid having to
- conditionalize its existance. */
- for (i = 0; i < BB_BUCKETS; i++)
- bb_hashbuckets[i] = 0;
- }
-
- if (bb_mode & 12)
- {
- bb_stacksize = 10;
- bb_stack = (unsigned long *) malloc (bb_stacksize * sizeof (*bb_stack));
- }
-
- /* Initialize destructor. */
- atexit (__bb_exit_trace_func);
-}
-
-/* Called upon entering a basic block. */
-
-void
-__bb_trace_func (void)
-{
- struct bb_edge *bucket;
-
- MACHINE_STATE_SAVE("1")
-
- if (!bb_callcount || (__bb.blocks->flags && (__bb.blocks->flags[__bb.blockno] & TRACE_OFF)))
- goto skip;
-
- bb_dst = __bb.blocks->addresses[__bb.blockno];
- __bb.blocks->counts[__bb.blockno]++;
-
- if (bb_tracefile)
- {
- fwrite (&bb_dst, sizeof (unsigned long), 1, bb_tracefile);
- }
-
- if (bb_hashbuckets)
- {
- struct bb_edge **startbucket, **oldnext;
-
- oldnext = startbucket
- = & bb_hashbuckets[ (((int) bb_src*8) ^ (int) bb_dst) % BB_BUCKETS ];
- bucket = *startbucket;
-
- for (bucket = *startbucket; bucket;
- oldnext = &(bucket->next), bucket = *oldnext)
- {
- if (bucket->src_addr == bb_src
- && bucket->dst_addr == bb_dst)
- {
- bucket->count++;
- *oldnext = bucket->next;
- bucket->next = *startbucket;
- *startbucket = bucket;
- goto ret;
- }
- }
-
- bucket = (struct bb_edge *) malloc (sizeof (struct bb_edge));
-
- if (!bucket)
- {
- if (!reported)
- {
- fprintf (stderr, "Profiler: out of memory\n");
- reported = 1;
- }
- }
-
- else
- {
- bucket->src_addr = bb_src;
- bucket->dst_addr = bb_dst;
- bucket->next = *startbucket;
- *startbucket = bucket;
- bucket->count = 1;
- }
- }
-
-ret:
- bb_src = bb_dst;
-
-skip:
- ;
-
- MACHINE_STATE_RESTORE("1")
-
-}
-
-/* Called when returning from a function and `__bb_showret__' is set. */
-
-static void
-__bb_trace_func_ret (void)
-{
- struct bb_edge *bucket;
-
- if (!bb_callcount || (__bb.blocks->flags && (__bb.blocks->flags[__bb.blockno] & TRACE_OFF)))
- goto skip;
-
- if (bb_hashbuckets)
- {
- struct bb_edge **startbucket, **oldnext;
-
- oldnext = startbucket
- = & bb_hashbuckets[ (((int) bb_dst * 8) ^ (int) bb_src) % BB_BUCKETS ];
- bucket = *startbucket;
-
- for (bucket = *startbucket; bucket;
- oldnext = &(bucket->next), bucket = *oldnext)
- {
- if (bucket->src_addr == bb_dst
- && bucket->dst_addr == bb_src)
- {
- bucket->count++;
- *oldnext = bucket->next;
- bucket->next = *startbucket;
- *startbucket = bucket;
- goto ret;
- }
- }
-
- bucket = (struct bb_edge *) malloc (sizeof (struct bb_edge));
-
- if (!bucket)
- {
- if (!reported)
- {
- fprintf (stderr, "Profiler: out of memory\n");
- reported = 1;
- }
- }
-
- else
- {
- bucket->src_addr = bb_dst;
- bucket->dst_addr = bb_src;
- bucket->next = *startbucket;
- *startbucket = bucket;
- bucket->count = 1;
- }
- }
-
-ret:
- bb_dst = bb_src;
-
-skip:
- ;
-
-}
-
-/* Called upon entering the first function of a file. */
-
-static void
-__bb_init_file (struct bb *blocks)
-{
-
- const struct bb_func *p;
- long blk, ncounts = blocks->ncounts;
- const char **functions = blocks->functions;
-
- /* Set up linked list. */
- blocks->zero_word = 1;
- blocks->next = bb_head;
- bb_head = blocks;
-
- blocks->flags = 0;
- if (!bb_func_head
- || !(blocks->flags = (char *) malloc (sizeof (char) * blocks->ncounts)))
- return;
-
- for (blk = 0; blk < ncounts; blk++)
- blocks->flags[blk] = 0;
-
- for (blk = 0; blk < ncounts; blk++)
- {
- for (p = bb_func_head; p; p = p->next)
- {
- if (!strcmp (p->funcname, functions[blk])
- && (!p->filename || !strcmp (p->filename, blocks->filename)))
- {
- blocks->flags[blk] |= p->mode;
- }
- }
- }
-
-}
-
-/* Called when exiting from a function. */
-
-void
-__bb_trace_ret (void)
-{
-
- MACHINE_STATE_SAVE("2")
-
- if (bb_callcount)
- {
- if ((bb_mode & 12) && bb_stacksize > bb_callcount)
- {
- bb_src = bb_stack[bb_callcount];
- if (bb_mode & 8)
- __bb_trace_func_ret ();
- }
-
- bb_callcount -= 1;
- }
-
- MACHINE_STATE_RESTORE("2")
-
-}
-
-/* Called when entering a function. */
-
-void
-__bb_init_trace_func (struct bb *blocks, unsigned long blockno)
-{
- static int trace_init = 0;
-
- MACHINE_STATE_SAVE("3")
-
- if (!blocks->zero_word)
- {
- if (!trace_init)
- {
- trace_init = 1;
- __bb_init_prg ();
- }
- __bb_init_file (blocks);
- }
-
- if (bb_callcount)
- {
-
- bb_callcount += 1;
-
- if (bb_mode & 12)
- {
- if (bb_callcount >= bb_stacksize)
- {
- size_t newsize = bb_callcount + 100;
-
- bb_stack = (unsigned long *) realloc (bb_stack, newsize);
- if (! bb_stack)
- {
- if (!reported)
- {
- fprintf (stderr, "Profiler: out of memory\n");
- reported = 1;
- }
- bb_stacksize = 0;
- goto stack_overflow;
- }
- bb_stacksize = newsize;
- }
- bb_stack[bb_callcount] = bb_src;
-
- if (bb_mode & 4)
- bb_src = 0;
-
- }
-
-stack_overflow:;
-
- }
-
- else if (blocks->flags && (blocks->flags[blockno] & TRACE_ON))
- {
- bb_callcount = 1;
- bb_src = 0;
-
- if (bb_stack)
- bb_stack[bb_callcount] = bb_src;
- }
-
- MACHINE_STATE_RESTORE("3")
-}
-
-#endif /* not inhibit_libc */
-#endif /* not BLOCK_PROFILER_CODE */
-#endif /* L_bb */
-\f
-#ifdef L_clear_cache
-/* Clear part of an instruction cache. */
-
-#define INSN_CACHE_PLANE_SIZE (INSN_CACHE_SIZE / INSN_CACHE_DEPTH)
-
-void
-__clear_cache (char *beg __attribute__((__unused__)),
- char *end __attribute__((__unused__)))
-{
-#ifdef CLEAR_INSN_CACHE
- CLEAR_INSN_CACHE (beg, end);
-#else
-#ifdef INSN_CACHE_SIZE
- static char array[INSN_CACHE_SIZE + INSN_CACHE_PLANE_SIZE + INSN_CACHE_LINE_WIDTH];
- static int initialized;
- int offset;
- void *start_addr
- void *end_addr;
- typedef (*function_ptr) (void);
-
-#if (INSN_CACHE_SIZE / INSN_CACHE_LINE_WIDTH) < 16
- /* It's cheaper to clear the whole cache.
- Put in a series of jump instructions so that calling the beginning
- of the cache will clear the whole thing. */
-
- if (! initialized)
- {
- int ptr = (((int) array + INSN_CACHE_LINE_WIDTH - 1)
- & -INSN_CACHE_LINE_WIDTH);
- int end_ptr = ptr + INSN_CACHE_SIZE;
-
- while (ptr < end_ptr)
- {
- *(INSTRUCTION_TYPE *)ptr
- = JUMP_AHEAD_INSTRUCTION + INSN_CACHE_LINE_WIDTH;
- ptr += INSN_CACHE_LINE_WIDTH;
- }
- *(INSTRUCTION_TYPE *) (ptr - INSN_CACHE_LINE_WIDTH) = RETURN_INSTRUCTION;
-
- initialized = 1;
- }
-
- /* Call the beginning of the sequence. */
- (((function_ptr) (((int) array + INSN_CACHE_LINE_WIDTH - 1)
- & -INSN_CACHE_LINE_WIDTH))
- ());
-
-#else /* Cache is large. */
-
- if (! initialized)
- {
- int ptr = (((int) array + INSN_CACHE_LINE_WIDTH - 1)
- & -INSN_CACHE_LINE_WIDTH);
-
- while (ptr < (int) array + sizeof array)
- {
- *(INSTRUCTION_TYPE *)ptr = RETURN_INSTRUCTION;
- ptr += INSN_CACHE_LINE_WIDTH;
- }
-
- initialized = 1;
- }
-
- /* Find the location in array that occupies the same cache line as BEG. */
-
- offset = ((int) beg & -INSN_CACHE_LINE_WIDTH) & (INSN_CACHE_PLANE_SIZE - 1);
- start_addr = (((int) (array + INSN_CACHE_PLANE_SIZE - 1)
- & -INSN_CACHE_PLANE_SIZE)
- + offset);
-
- /* Compute the cache alignment of the place to stop clearing. */
-#if 0 /* This is not needed for gcc's purposes. */
- /* If the block to clear is bigger than a cache plane,
- we clear the entire cache, and OFFSET is already correct. */
- if (end < beg + INSN_CACHE_PLANE_SIZE)
-#endif
- offset = (((int) (end + INSN_CACHE_LINE_WIDTH - 1)
- & -INSN_CACHE_LINE_WIDTH)
- & (INSN_CACHE_PLANE_SIZE - 1));
-
-#if INSN_CACHE_DEPTH > 1
- end_addr = (start_addr & -INSN_CACHE_PLANE_SIZE) + offset;
- if (end_addr <= start_addr)
- end_addr += INSN_CACHE_PLANE_SIZE;
-
- for (plane = 0; plane < INSN_CACHE_DEPTH; plane++)
- {
- int addr = start_addr + plane * INSN_CACHE_PLANE_SIZE;
- int stop = end_addr + plane * INSN_CACHE_PLANE_SIZE;
-
- while (addr != stop)
- {
- /* Call the return instruction at ADDR. */
- ((function_ptr) addr) ();
-
- addr += INSN_CACHE_LINE_WIDTH;
- }
- }
-#else /* just one plane */
- do
- {
- /* Call the return instruction at START_ADDR. */
- ((function_ptr) start_addr) ();
-
- start_addr += INSN_CACHE_LINE_WIDTH;
- }
- while ((start_addr % INSN_CACHE_SIZE) != offset);
-#endif /* just one plane */
-#endif /* Cache is large */
-#endif /* Cache exists */
-#endif /* CLEAR_INSN_CACHE */
-}
-
-#endif /* L_clear_cache */
-\f
-#ifdef L_trampoline
-
-/* Jump to a trampoline, loading the static chain address. */
-
-#if defined(WINNT) && ! defined(__CYGWIN__) && ! defined (_UWIN)
-
-long
-getpagesize (void)
-{
-#ifdef _ALPHA_
- return 8192;
-#else
- return 4096;
-#endif
-}
-
-#ifdef __i386__
-extern int VirtualProtect (char *, int, int, int *) __attribute__((stdcall));
-#endif
-
-int
-mprotect (char *addr, int len, int prot)
-{
- int np, op;
-
- if (prot == 7)
- np = 0x40;
- else if (prot == 5)
- np = 0x20;
- else if (prot == 4)
- np = 0x10;
- else if (prot == 3)
- np = 0x04;
- else if (prot == 1)
- np = 0x02;
- else if (prot == 0)
- np = 0x01;
-
- if (VirtualProtect (addr, len, np, &op))
- return 0;
- else
- return -1;
-}
-
-#endif /* WINNT && ! __CYGWIN__ && ! _UWIN */
-
-#ifdef TRANSFER_FROM_TRAMPOLINE
-TRANSFER_FROM_TRAMPOLINE
-#endif
-
-#if defined (NeXT) && defined (__MACH__)
-
-/* Make stack executable so we can call trampolines on stack.
- This is called from INITIALIZE_TRAMPOLINE in next.h. */
-#ifdef NeXTStep21
- #include <mach.h>
-#else
- #include <mach/mach.h>
-#endif
-
-void
-__enable_execute_stack (char *addr)
-{
- kern_return_t r;
- char *eaddr = addr + TRAMPOLINE_SIZE;
- vm_address_t a = (vm_address_t) addr;
-
- /* turn on execute access on stack */
- r = vm_protect (task_self (), a, TRAMPOLINE_SIZE, FALSE, VM_PROT_ALL);
- if (r != KERN_SUCCESS)
- {
- mach_error("vm_protect VM_PROT_ALL", r);
- exit(1);
- }
-
- /* We inline the i-cache invalidation for speed */
-
-#ifdef CLEAR_INSN_CACHE
- CLEAR_INSN_CACHE (addr, eaddr);
-#else
- __clear_cache ((int) addr, (int) eaddr);
-#endif
-}
-
-#endif /* defined (NeXT) && defined (__MACH__) */
-
-#ifdef __convex__
-
-/* Make stack executable so we can call trampolines on stack.
- This is called from INITIALIZE_TRAMPOLINE in convex.h. */
-
-#include <sys/mman.h>
-#include <sys/vmparam.h>
-#include <machine/machparam.h>
-
-void
-__enable_execute_stack (void)
-{
- int fp;
- static unsigned lowest = USRSTACK;
- unsigned current = (unsigned) &fp & -NBPG;
-
- if (lowest > current)
- {
- unsigned len = lowest - current;
- mremap (current, &len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE);
- lowest = current;
- }
-
- /* Clear instruction cache in case an old trampoline is in it. */
- asm ("pich");
-}
-#endif /* __convex__ */
-
-#ifdef __sysV88__
-
-/* Modified from the convex -code above. */
-
-#include <sys/param.h>
-#include <errno.h>
-#include <sys/m88kbcs.h>
-
-void
-__enable_execute_stack (void)
-{
- int save_errno;
- static unsigned long lowest = USRSTACK;
- unsigned long current = (unsigned long) &save_errno & -NBPC;
-
- /* Ignore errno being set. memctl sets errno to EINVAL whenever the
- address is seen as 'negative'. That is the case with the stack. */
-
- save_errno=errno;
- if (lowest > current)
- {
- unsigned len=lowest-current;
- memctl(current,len,MCT_TEXT);
- lowest = current;
- }
- else
- memctl(current,NBPC,MCT_TEXT);
- errno=save_errno;
-}
-
-#endif /* __sysV88__ */
-
-#ifdef __sysV68__
-
-#include <sys/signal.h>
-#include <errno.h>
-
-/* Motorola forgot to put memctl.o in the libp version of libc881.a,
- so define it here, because we need it in __clear_insn_cache below */
-/* On older versions of this OS, no memctl or MCT_TEXT are defined;
- hence we enable this stuff only if MCT_TEXT is #define'd. */
-
-#ifdef MCT_TEXT
-asm("\n\
- global memctl\n\
-memctl:\n\
- movq &75,%d0\n\
- trap &0\n\
- bcc.b noerror\n\
- jmp cerror%\n\
-noerror:\n\
- movq &0,%d0\n\
- rts");
-#endif
-
-/* Clear instruction cache so we can call trampolines on stack.
- This is called from FINALIZE_TRAMPOLINE in mot3300.h. */
-
-void
-__clear_insn_cache (void)
-{
-#ifdef MCT_TEXT
- int save_errno;
-
- /* Preserve errno, because users would be surprised to have
- errno changing without explicitly calling any system-call. */
- save_errno = errno;
-
- /* Keep it simple : memctl (MCT_TEXT) always fully clears the insn cache.
- No need to use an address derived from _start or %sp, as 0 works also. */
- memctl(0, 4096, MCT_TEXT);
- errno = save_errno;
-#endif
-}
-
-#endif /* __sysV68__ */
-
-#ifdef __pyr__
-
-#undef NULL /* Avoid errors if stdio.h and our stddef.h mismatch. */
-#include <stdio.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/vmmac.h>
-
-/* Modified from the convex -code above.
- mremap promises to clear the i-cache. */
-
-void
-__enable_execute_stack (void)
-{
- int fp;
- if (mprotect (((unsigned int)&fp/PAGSIZ)*PAGSIZ, PAGSIZ,
- PROT_READ|PROT_WRITE|PROT_EXEC))
- {
- perror ("mprotect in __enable_execute_stack");
- fflush (stderr);
- abort ();
- }
-}
-#endif /* __pyr__ */
-
-#if defined (sony_news) && defined (SYSTYPE_BSD)
-
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/param.h>
-#include <syscall.h>
-#include <machine/sysnews.h>
-
-/* cacheflush function for NEWS-OS 4.2.
- This function is called from trampoline-initialize code
- defined in config/mips/mips.h. */
-
-void
-cacheflush (char *beg, int size, int flag)
-{
- if (syscall (SYS_sysnews, NEWS_CACHEFLUSH, beg, size, FLUSH_BCACHE))
- {
- perror ("cache_flush");
- fflush (stderr);
- abort ();
- }
-}
-
-#endif /* sony_news */
-#endif /* L_trampoline */
-\f
-#ifndef __CYGWIN__
-#ifdef L__main
-
-#include "gbl-ctors.h"
-/* Some systems use __main in a way incompatible with its use in gcc, in these
- cases use the macros NAME__MAIN to give a quoted symbol and SYMBOL__MAIN to
- give the same symbol without quotes for an alternative entry point. You
- must define both, or neither. */
-#ifndef NAME__MAIN
-#define NAME__MAIN "__main"
-#define SYMBOL__MAIN __main
-#endif
-
-#ifdef INIT_SECTION_ASM_OP
-#undef HAS_INIT_SECTION
-#define HAS_INIT_SECTION
-#endif
-
-#if !defined (HAS_INIT_SECTION) || !defined (OBJECT_FORMAT_ELF)
-
-/* Some ELF crosses use crtstuff.c to provide __CTOR_LIST__, but use this
- code to run constructors. In that case, we need to handle EH here, too. */
-
-#ifdef EH_FRAME_SECTION
-#include "frame.h"
-extern unsigned char __EH_FRAME_BEGIN__[];
-#endif
-
-/* Run all the global destructors on exit from the program. */
-
-void
-__do_global_dtors (void)
-{
-#ifdef DO_GLOBAL_DTORS_BODY
- DO_GLOBAL_DTORS_BODY;
-#else
- static func_ptr *p = __DTOR_LIST__ + 1;
- while (*p)
- {
- p++;
- (*(p-1)) ();
- }
-#endif
-#if defined (EH_FRAME_SECTION) && !defined (HAS_INIT_SECTION)
- {
- static int completed = 0;
- if (! completed)
- {
- completed = 1;
- __deregister_frame_info (__EH_FRAME_BEGIN__);
- }
- }
-#endif
-}
-#endif
-
-#ifndef HAS_INIT_SECTION
-/* Run all the global constructors on entry to the program. */
-
-void
-__do_global_ctors (void)
-{
-#ifdef EH_FRAME_SECTION
- {
- static struct object object;
- __register_frame_info (__EH_FRAME_BEGIN__, &object);
- }
-#endif
- DO_GLOBAL_CTORS_BODY;
- atexit (__do_global_dtors);
-}
-#endif /* no HAS_INIT_SECTION */
-
-#if !defined (HAS_INIT_SECTION) || defined (INVOKE__main)
-/* Subroutine called automatically by `main'.
- Compiling a global function named `main'
- produces an automatic call to this function at the beginning.
-
- For many systems, this routine calls __do_global_ctors.
- For systems which support a .init section we use the .init section
- to run __do_global_ctors, so we need not do anything here. */
-
-void
-SYMBOL__MAIN ()
-{
- /* Support recursive calls to `main': run initializers just once. */
- static int initialized;
- if (! initialized)
- {
- initialized = 1;
- __do_global_ctors ();
- }
-}
-#endif /* no HAS_INIT_SECTION or INVOKE__main */
-
-#endif /* L__main */
-#endif /* __CYGWIN__ */
-\f
-#ifdef L_ctors
-
-#include "gbl-ctors.h"
-
-/* Provide default definitions for the lists of constructors and
- destructors, so that we don't get linker errors. These symbols are
- intentionally bss symbols, so that gld and/or collect will provide
- the right values. */
-
-/* We declare the lists here with two elements each,
- so that they are valid empty lists if no other definition is loaded.
-
- If we are using the old "set" extensions to have the gnu linker
- collect ctors and dtors, then we __CTOR_LIST__ and __DTOR_LIST__
- must be in the bss/common section.
-
- Long term no port should use those extensions. But many still do. */
-#if !defined(INIT_SECTION_ASM_OP) && !defined(CTOR_LISTS_DEFINED_EXTERNALLY)
-#if defined (ASM_OUTPUT_CONSTRUCTOR) || defined (USE_COLLECT2)
-func_ptr __CTOR_LIST__[2] = {0, 0};
-func_ptr __DTOR_LIST__[2] = {0, 0};
-#else
-func_ptr __CTOR_LIST__[2];
-func_ptr __DTOR_LIST__[2];
-#endif
-#endif /* no INIT_SECTION_ASM_OP and not CTOR_LISTS_DEFINED_EXTERNALLY */
-#endif /* L_ctors */
-\f
-#ifdef L_exit
projects / platform / upstream / gcc.git / blobdiff