/* More subroutines needed by GCC output code on some machines. */
/* Compile this one with gcc. */
/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001 Free Software Foundation, Inc.
+ 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GCC.
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
+
+/* We include auto-host.h here to get HAVE_GAS_HIDDEN. This is
+ supposedly valid even though this is a "target" file. */
+#include "auto-host.h"
+
/* It is incorrect to include config.h here, because this file is being
compiled for the target, and hence definitions concerning only the host
do not apply. */
-
#include "tconfig.h"
#include "tsystem.h"
-
-#include "machmode.h"
+#include "coretypes.h"
+#include "tm.h"
/* Don't use `fancy_abort' here even if config.h says to use it. */
#ifdef abort
#undef abort
#endif
+#ifdef HAVE_GAS_HIDDEN
+#define ATTRIBUTE_HIDDEN __attribute__ ((__visibility__ ("hidden")))
+#else
+#define ATTRIBUTE_HIDDEN
+#endif
+
#include "libgcc2.h"
\f
-#if defined (L_negdi2) || defined (L_divdi3) || defined (L_moddi3)
-#if defined (L_divdi3) || defined (L_moddi3)
-static inline
+#ifdef DECLARE_LIBRARY_RENAMES
+ DECLARE_LIBRARY_RENAMES
#endif
+
+#if defined (L_negdi2)
DWtype
__negdi2 (DWtype u)
{
__subvdi3 (DWtype a, DWtype b)
{
#ifdef L_addvdi3
- return (a, (-b));
+ return __addvdi3 (a, (-b));
#else
DWtype w;
Wtype
__negvsi2 (Wtype a)
{
- Wtype w;
+ Wtype w;
- w = -a;
+ w = -a;
if (a >= 0 ? w > 0 : w < 0)
abort ();
DWtype
__negvdi2 (DWtype a)
{
- DWtype w;
+ DWtype w;
- w = -a;
+ w = -a;
if (a >= 0 ? w > 0 : w < 0)
abort ();
- return w;
+ return w;
}
#endif
\f
Wtype
__absvsi2 (Wtype a)
{
- Wtype w = a;
+ Wtype w = a;
- if (a < 0)
+ if (a < 0)
#ifdef L_negvsi2
- w = __negvsi2 (a);
+ w = __negvsi2 (a);
#else
- w = -a;
+ w = -a;
- if (w < 0)
- abort ();
+ if (w < 0)
+ abort ();
#endif
return w;
DWtype
__absvdi2 (DWtype a)
{
- DWtype w = a;
+ DWtype w = a;
- if (a < 0)
+ if (a < 0)
#ifdef L_negvsi2
- w = __negvsi2 (a);
+ w = __negvsi2 (a);
#else
- w = -a;
+ w = -a;
- if (w < 0)
- abort ();
+ if (w < 0)
+ abort ();
#endif
- return w;
+ return w;
}
#endif
\f
DWtype
__mulvdi3 (DWtype u, DWtype v)
{
- DWtype w;
+ DWtype w;
w = u * v;
#endif
\f
-/* Unless shift functions are defined whith full ANSI prototypes,
+/* Unless shift functions are defined with full ANSI prototypes,
parameter b will be promoted to int if word_type is smaller than an int. */
#ifdef L_lshrdi3
DWtype
}
#endif
\f
+#ifdef L_ffssi2
+#undef int
+extern int __ffsSI2 (UWtype u);
+int
+__ffsSI2 (UWtype u)
+{
+ UWtype count;
+
+ if (u == 0)
+ return 0;
+
+ count_trailing_zeros (count, u);
+ return count + 1;
+}
+#endif
+\f
#ifdef L_ffsdi2
-DWtype
-__ffsdi2 (DWtype u)
+#undef int
+extern int __ffsDI2 (DWtype u);
+int
+__ffsDI2 (DWtype u)
{
DWunion uu;
UWtype word, count, add;
}
#endif
\f
+#if (defined (L_udivdi3) || defined (L_divdi3) || \
+ defined (L_umoddi3) || defined (L_moddi3))
+#if defined (sdiv_qrnnd)
+#define L_udiv_w_sdiv
+#endif
+#endif
+
#ifdef L_udiv_w_sdiv
#if defined (sdiv_qrnnd)
+#if (defined (L_udivdi3) || defined (L_divdi3) || \
+ defined (L_umoddi3) || defined (L_moddi3))
+static inline __attribute__ ((__always_inline__))
+#endif
UWtype
__udiv_w_sdiv (UWtype *rp, UWtype a1, UWtype a0, UWtype d)
{
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
};
#endif
+\f
+#ifdef L_clzsi2
+#undef int
+extern int __clzSI2 (UWtype x);
+int
+__clzSI2 (UWtype x)
+{
+ Wtype ret;
+
+ count_leading_zeros (ret, x);
+
+ return ret;
+}
+#endif
+\f
+#ifdef L_clzdi2
+#undef int
+extern int __clzDI2 (UDWtype x);
+int
+__clzDI2 (UDWtype x)
+{
+ DWunion uu;
+ UWtype word;
+ Wtype ret, add;
+
+ uu.ll = x;
+ if (uu.s.high)
+ word = uu.s.high, add = 0;
+ else
+ word = uu.s.low, add = W_TYPE_SIZE;
+
+ count_leading_zeros (ret, word);
+ return ret + add;
+}
+#endif
+\f
+#ifdef L_ctzsi2
+#undef int
+extern int __ctzSI2 (UWtype x);
+int
+__ctzSI2 (UWtype x)
+{
+ Wtype ret;
+
+ count_trailing_zeros (ret, x);
+
+ return ret;
+}
+#endif
+\f
+#ifdef L_ctzdi2
+#undef int
+extern int __ctzDI2 (UDWtype x);
+int
+__ctzDI2 (UDWtype x)
+{
+ DWunion uu;
+ UWtype word;
+ Wtype ret, add;
+
+ uu.ll = x;
+ if (uu.s.low)
+ word = uu.s.low, add = 0;
+ else
+ word = uu.s.high, add = W_TYPE_SIZE;
+
+ count_trailing_zeros (ret, word);
+ return ret + add;
+}
+#endif
+
+#if (defined (L_popcountsi2) || defined (L_popcountdi2) \
+ || defined (L_popcount_tab))
+extern const UQItype __popcount_tab[] ATTRIBUTE_HIDDEN;
+#endif
+
+#ifdef L_popcount_tab
+const UQItype __popcount_tab[] =
+{
+ 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4,1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,
+ 1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
+ 1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
+ 2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
+ 1,2,2,3,2,3,3,4,2,3,3,4,3,4,4,5,2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,
+ 2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
+ 2,3,3,4,3,4,4,5,3,4,4,5,4,5,5,6,3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,
+ 3,4,4,5,4,5,5,6,4,5,5,6,5,6,6,7,4,5,5,6,5,6,6,7,5,6,6,7,6,7,7,8,
+};
+#endif
+\f
+#ifdef L_popcountsi2
+#undef int
+extern int __popcountSI2 (UWtype x);
+int
+__popcountSI2 (UWtype x)
+{
+ UWtype i, ret = 0;
+
+ for (i = 0; i < W_TYPE_SIZE; i += 8)
+ ret += __popcount_tab[(x >> i) & 0xff];
+
+ return ret;
+}
+#endif
+\f
+#ifdef L_popcountdi2
+#undef int
+extern int __popcountDI2 (UDWtype x);
+int
+__popcountDI2 (UDWtype x)
+{
+ UWtype i, ret = 0;
+
+ for (i = 0; i < 2*W_TYPE_SIZE; i += 8)
+ ret += __popcount_tab[(x >> i) & 0xff];
+
+ return ret;
+}
+#endif
+\f
+#ifdef L_paritysi2
+#undef int
+extern int __paritySI2 (UWtype x);
+int
+__paritySI2 (UWtype x)
+{
+#if W_TYPE_SIZE > 64
+# error "fill out the table"
+#endif
+#if W_TYPE_SIZE > 32
+ x ^= x >> 32;
+#endif
+#if W_TYPE_SIZE > 16
+ x ^= x >> 16;
+#endif
+ x ^= x >> 8;
+ x ^= x >> 4;
+ x &= 0xf;
+ return (0x6996 >> x) & 1;
+}
+#endif
+\f
+#ifdef L_paritydi2
+#undef int
+extern int __parityDI2 (UDWtype x);
+int
+__parityDI2 (UDWtype x)
+{
+ DWunion uu;
+ UWtype nx;
+
+ uu.ll = x;
+ nx = uu.s.low ^ uu.s.high;
+
+#if W_TYPE_SIZE > 64
+# error "fill out the table"
+#endif
+#if W_TYPE_SIZE > 32
+ nx ^= nx >> 32;
+#endif
+#if W_TYPE_SIZE > 16
+ nx ^= nx >> 16;
+#endif
+ nx ^= nx >> 8;
+ nx ^= nx >> 4;
+ nx &= 0xf;
+ return (0x6996 >> nx) & 1;
+}
+#endif
#ifdef L_udivmoddi4
#if (defined (L_udivdi3) || defined (L_divdi3) || \
defined (L_umoddi3) || defined (L_moddi3))
-static inline
+static inline __attribute__ ((__always_inline__))
#endif
UDWtype
__udivmoddi4 (UDWtype n, UDWtype d, UDWtype *rp)
if (uu.s.high < 0)
c = ~c,
- uu.ll = __negdi2 (uu.ll);
+ uu.ll = -uu.ll;
if (vv.s.high < 0)
c = ~c,
- vv.ll = __negdi2 (vv.ll);
+ vv.ll = -vv.ll;
w = __udivmoddi4 (uu.ll, vv.ll, (UDWtype *) 0);
if (c)
- w = __negdi2 (w);
+ w = -w;
return w;
}
if (uu.s.high < 0)
c = ~c,
- uu.ll = __negdi2 (uu.ll);
+ uu.ll = -uu.ll;
if (vv.s.high < 0)
- vv.ll = __negdi2 (vv.ll);
+ vv.ll = -vv.ll;
(void) __udivmoddi4 (uu.ll, vv.ll, &w);
if (c)
- w = __negdi2 (w);
+ w = -w;
return w;
}
DWtype
__fixunsdfDI (DFtype a)
{
- DFtype b;
- UDWtype v;
+ UWtype hi, lo;
- if (a < 0)
- return 0;
+ /* Get high part of result. The division here will just moves the radix
+ point and will not cause any rounding. Then the conversion to integral
+ type chops result as desired. */
+ hi = a / HIGH_WORD_COEFF;
- /* Compute high word of result, as a flonum. */
- b = (a / HIGH_WORD_COEFF);
- /* Convert that to fixed (but not to DWtype!),
- and shift it into the high word. */
- v = (UWtype) b;
- v <<= WORD_SIZE;
- /* Remove high part from the DFtype, leaving the low part as flonum. */
- a -= (DFtype)v;
- /* Convert that to fixed (but not to DWtype!) and add it in.
- Sometimes A comes out negative. This is significant, since
- A has more bits than a long int does. */
- if (a < 0)
- v -= (UWtype) (- a);
- else
- v += (UWtype) a;
- return v;
+ /* Get low part of result. Convert `hi' to floating type and scale it back,
+ then subtract this from the number being converted. This leaves the low
+ part. Convert that to integral type. */
+ lo = (a - ((DFtype) hi) * HIGH_WORD_COEFF);
+
+ /* Assemble result from the two parts. */
+ return ((UDWtype) hi << WORD_SIZE) | lo;
}
#endif
to lose any bits. Some day someone else can write a faster version
that avoids converting to DFtype, and verify it really works right. */
DFtype a = original_a;
- DFtype b;
- UDWtype v;
+ UWtype hi, lo;
- if (a < 0)
- return 0;
+ /* Get high part of result. The division here will just moves the radix
+ point and will not cause any rounding. Then the conversion to integral
+ type chops result as desired. */
+ hi = a / HIGH_WORD_COEFF;
- /* Compute high word of result, as a flonum. */
- b = (a / HIGH_WORD_COEFF);
- /* Convert that to fixed (but not to DWtype!),
- and shift it into the high word. */
- v = (UWtype) b;
- v <<= WORD_SIZE;
- /* Remove high part from the DFtype, leaving the low part as flonum. */
- a -= (DFtype) v;
- /* Convert that to fixed (but not to DWtype!) and add it in.
- Sometimes A comes out negative. This is significant, since
- A has more bits than a long int does. */
- if (a < 0)
- v -= (UWtype) (- a);
- else
- v += (UWtype) a;
- return v;
+ /* Get low part of result. Convert `hi' to floating type and scale it back,
+ then subtract this from the number being converted. This leaves the low
+ part. Convert that to integral type. */
+ lo = (a - ((DFtype) hi) * HIGH_WORD_COEFF);
+
+ /* Assemble result from the two parts. */
+ return ((UDWtype) hi << WORD_SIZE) | lo;
}
#endif
#define WORD_SIZE (sizeof (Wtype) * BITS_PER_UNIT)
#define HIGH_HALFWORD_COEFF (((UDWtype) 1) << (WORD_SIZE / 2))
#define HIGH_WORD_COEFF (((UDWtype) 1) << WORD_SIZE)
-#define DI_SIZE (sizeof (DWtype) * BITS_PER_UNIT)
-
-/* Define codes for all the float formats that we know of. Note
- that this is copied from real.h. */
-
-#define UNKNOWN_FLOAT_FORMAT 0
-#define IEEE_FLOAT_FORMAT 1
-#define VAX_FLOAT_FORMAT 2
-#define IBM_FLOAT_FORMAT 3
-
-/* Default to IEEE float if not specified. Nearly all machines use it. */
-#ifndef HOST_FLOAT_FORMAT
-#define HOST_FLOAT_FORMAT IEEE_FLOAT_FORMAT
-#endif
-
-#if HOST_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
-#define DF_SIZE 53
-#define SF_SIZE 24
-#endif
-
-#if HOST_FLOAT_FORMAT == IBM_FLOAT_FORMAT
-#define DF_SIZE 56
-#define SF_SIZE 24
-#endif
-#if HOST_FLOAT_FORMAT == VAX_FLOAT_FORMAT
-#define DF_SIZE 56
-#define SF_SIZE 24
-#endif
+#define DI_SIZE (sizeof (DWtype) * BITS_PER_UNIT)
+#define DF_SIZE DBL_MANT_DIG
+#define SF_SIZE FLT_MANT_DIG
SFtype
__floatdisf (DWtype u)
&& u < ((DWtype) 1 << DF_SIZE)))
{
if ((UDWtype) u & (REP_BIT - 1))
- u |= REP_BIT;
+ {
+ u &= ~ (REP_BIT - 1);
+ u |= REP_BIT;
+ }
}
}
f = (Wtype) (u >> WORD_SIZE);
#endif
#endif
-#ifdef L_bb
-
-#if LONG_TYPE_SIZE == GCOV_TYPE_SIZE
-typedef long gcov_type;
-#else
-typedef long long gcov_type;
-#endif
+\f
+#ifdef L_clear_cache
+/* Clear part of an instruction cache. */
+#define INSN_CACHE_PLANE_SIZE (INSN_CACHE_SIZE / INSN_CACHE_DEPTH)
-/* Structure emitted by -a */
-struct bb
+void
+__clear_cache (char *beg __attribute__((__unused__)),
+ char *end __attribute__((__unused__)))
{
- long zero_word;
- const char *filename;
- gcov_type *counts;
- long ncounts;
- struct bb *next;
- const unsigned long *addresses;
-
- /* Older GCC's did not emit these fields. */
- long nwords;
- const char **functions;
- const long *line_nums;
- const char **filenames;
- char *flags;
-};
-
-#ifdef BLOCK_PROFILER_CODE
-BLOCK_PROFILER_CODE
+#ifdef CLEAR_INSN_CACHE
+ CLEAR_INSN_CACHE (beg, end);
#else
-#ifndef inhibit_libc
-
-/* Simple minded basic block profiling output dumper for
- systems that don't provide tcov support. At present,
- it requires atexit and stdio. */
-
-#undef NULL /* Avoid errors if stdio.h and our stddef.h mismatch. */
-#include <stdio.h>
-char *ctime PARAMS ((const time_t *));
-
-#include "gbl-ctors.h"
-#include "gcov-io.h"
-#include <string.h>
-#ifdef TARGET_HAS_F_SETLKW
-#include <fcntl.h>
-#include <errno.h>
-#endif
-
-static struct bb *bb_head;
-
-static int num_digits (long long value, int base) __attribute__ ((const));
+#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);
-/* Return the number of digits needed to print a value */
-/* __inline__ */ static int num_digits (long long value, int base)
-{
- int minus = (value < 0 && base != 16);
- unsigned long long v = (minus) ? -value : value;
- int ret = minus;
+#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. */
- do
+ if (! initialized)
{
- v /= base;
- ret++;
- }
- while (v);
+ int ptr = (((int) array + INSN_CACHE_LINE_WIDTH - 1)
+ & -INSN_CACHE_LINE_WIDTH);
+ int end_ptr = ptr + INSN_CACHE_SIZE;
- return ret;
-}
+ 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;
-void
-__bb_exit_func (void)
-{
- FILE *da_file, *file;
- long time_value;
- int i;
+ initialized = 1;
+ }
- if (bb_head == 0)
- return;
+ /* Call the beginning of the sequence. */
+ (((function_ptr) (((int) array + INSN_CACHE_LINE_WIDTH - 1)
+ & -INSN_CACHE_LINE_WIDTH))
+ ());
- i = strlen (bb_head->filename) - 3;
+#else /* Cache is large. */
- if (!strcmp (bb_head->filename+i, ".da"))
+ if (! initialized)
{
- /* Must be -fprofile-arcs not -a.
- Dump data in a form that gcov expects. */
-
- struct bb *ptr;
+ int ptr = (((int) array + INSN_CACHE_LINE_WIDTH - 1)
+ & -INSN_CACHE_LINE_WIDTH);
- for (ptr = bb_head; ptr != (struct bb *) 0; ptr = ptr->next)
+ while (ptr < (int) array + sizeof array)
{
- int firstchar;
-
- /* Make sure the output file exists -
- but don't clobber exiting data. */
- if ((da_file = fopen (ptr->filename, "a")) != 0)
- fclose (da_file);
-
- /* Need to re-open in order to be able to write from the start. */
- da_file = fopen (ptr->filename, "r+b");
- /* Some old systems might not allow the 'b' mode modifier.
- Therefore, try to open without it. This can lead to a race
- condition so that when you delete and re-create the file, the
- file might be opened in text mode, but then, you shouldn't
- delete the file in the first place. */
- if (da_file == 0)
- da_file = fopen (ptr->filename, "r+");
- if (da_file == 0)
- {
- fprintf (stderr, "arc profiling: Can't open output file %s.\n",
- ptr->filename);
- continue;
- }
+ *(INSTRUCTION_TYPE *)ptr = RETURN_INSTRUCTION;
+ ptr += INSN_CACHE_LINE_WIDTH;
+ }
- /* After a fork, another process might try to read and/or write
- the same file simultanously. So if we can, lock the file to
- avoid race conditions. */
-#if defined (TARGET_HAS_F_SETLKW)
- {
- struct flock s_flock;
+ initialized = 1;
+ }
- s_flock.l_type = F_WRLCK;
- s_flock.l_whence = SEEK_SET;
- s_flock.l_start = 0;
- s_flock.l_len = 1;
- s_flock.l_pid = getpid ();
+ /* Find the location in array that occupies the same cache line as BEG. */
- while (fcntl (fileno (da_file), F_SETLKW, &s_flock)
- && errno == EINTR);
- }
-#endif
-
- /* 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++)
- {
- gcov_type v = 0;
-
- if (__read_gcov_type (&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_gcov_type (ptr->ncounts, da_file, 8) != 0)
- {
-
- fprintf (stderr, "arc profiling: Error writing output file %s.\n",
- ptr->filename);
- }
- else
- {
- int j;
- gcov_type *count_ptr = ptr->counts;
- int ret = 0;
- for (j = ptr->ncounts; j > 0; j--)
- {
- if (__write_gcov_type (*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;
- gcov_type 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++)
- {
-#if LONG_TYPE_SIZE == GCOV_TYPE_SIZE
- fprintf (file,
- " Block #%*d: executed %*ld time(s)",
- blk_len, i+1,
- cnt_len, ptr->counts[i]);
-#else
- fprintf (file,
- " Block #%*d: executed %*lld time(s)",
- blk_len, i+1,
- cnt_len, ptr->counts[i]);
-#endif
-
- 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 existence. */
- 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);
+ 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. */
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>
}
#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__
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