diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | db2/db_int.h | 2 | ||||
| -rw-r--r-- | db2/mutex/alpha.h | 26 | ||||
| -rw-r--r-- | db2/mutex/mutex.c | 4 | ||||
| -rw-r--r-- | db2/mutex/sparc.gcc | 14 | ||||
| -rw-r--r-- | sysdeps/alpha/Makefile | 6 | ||||
| -rw-r--r-- | timezone/test-tz.c | 2 |
7 files changed, 51 insertions, 11 deletions
@@ -1,5 +1,13 @@ 1999-08-30 Ulrich Drepper <drepper@cygnus.com> + * db2/db_int.h: Change tsl_t type to u_int32_t. + * db2/mutex/mutex.c: Allow Alpha mutex definitions. + * db2/mutex/alpha.h: New file. + * db2/mutex/sparc.gcc: Fix store code for v9. Simplify clear code. + * sysdeps/alpha/Makefile [db2]: Set CFLAGS of mutex.c to make spinlocks + known. + Patches by Richard Henderson. + * stdlib/tst-environ.c: Add cast to avoid warning. * timezone/test-tz.c: Use setenv instead of putenv. diff --git a/db2/db_int.h b/db2/db_int.h index 4c2e794153..228c7ab4f2 100644 --- a/db2/db_int.h +++ b/db2/db_int.h @@ -138,7 +138,7 @@ typedef struct __fn { /******************************************************* * Mutex support. *******************************************************/ -typedef unsigned char tsl_t; +typedef u_int32_t tsl_t; /* * !!! diff --git a/db2/mutex/alpha.h b/db2/mutex/alpha.h new file mode 100644 index 0000000000..ad3afc4544 --- /dev/null +++ b/db2/mutex/alpha.h @@ -0,0 +1,26 @@ +/* For alpha, 0 is clear, 1 is set. */ + +#ifdef __GNUC__ +#define TSL_SET(tsl) ({ \ + register tsl_t *__l = (tsl); \ + int __r; \ + asm volatile( \ + "1: ldl_l %0,%1\n" \ + " blbs %0,2f\n" \ + " mov 1,%0\n" \ + " stl_c %0,%1\n" \ + " bne %0,1b\n" \ + " mb\n" \ + "2:" \ + : "=&r"(__r), "=m"(*__l) : "m"(*__l) : "memory"); \ + __r; \ +}) +#endif + +#ifdef __DECC +#include <alpha/builtins.h> +#define TSL_SET(tsl) (__LOCK_LONG_RETRY((tsl), 1) != 0) +#endif + +#define TSL_UNSET(tsl) (*(tsl) = 0) +#define TSL_INIT(tsl) TSL_UNSET(tsl) diff --git a/db2/mutex/mutex.c b/db2/mutex/mutex.c index acc6aa07c9..2fac14cf3d 100644 --- a/db2/mutex/mutex.c +++ b/db2/mutex/mutex.c @@ -110,6 +110,10 @@ static const char sccsid[] = "@(#)mutex.c 10.52 (Sleepycat) 11/8/98"; #include "x86.gcc" #endif +#ifdef HAVE_ASSEM_ALPHA +#include "alpha.h" +#endif + #ifdef WIN16 /* Win16 spinlocks are simple because we cannot possibly be preempted. */ #define TSL_INIT(tsl) diff --git a/db2/mutex/sparc.gcc b/db2/mutex/sparc.gcc index 8445a0629b..9e3239b0b0 100644 --- a/db2/mutex/sparc.gcc +++ b/db2/mutex/sparc.gcc @@ -13,21 +13,19 @@ * For gcc/sparc, 0 is clear, 1 is set. */ -#if defined(__sparcv9__) -Does the following code need membar instructions for V9 processors? -#endif +/* The stbar is needed for v8, and is implemented as membar #sync on v9, + so is functional there as well. For v7, stbar may generate an illegal + instruction and we have no way to tell what we're running on. Some + operating systems notice and skip this instruction in the fault handler. */ #define TSL_SET(tsl) ({ \ register tsl_t *__l = (tsl); \ register tsl_t __r; \ __asm__ volatile \ - ("ldstub [%1],%0" \ + ("ldstub [%1],%0; stbar" \ : "=r"( __r) : "r" (__l)); \ !__r; \ }) -#define TSL_UNSET(tsl) ({ \ - register tsl_t *__l = (tsl); \ - __asm__ volatile ("stb %%g0,[%0]" : : "r" (__l)); \ -}) +#define TSL_UNSET(tsl) ((tsl) = 0) #define TSL_INIT(tsl) TSL_UNSET(tsl) diff --git a/sysdeps/alpha/Makefile b/sysdeps/alpha/Makefile index 250a31779c..63c7d4bba0 100644 --- a/sysdeps/alpha/Makefile +++ b/sysdeps/alpha/Makefile @@ -1,4 +1,4 @@ -# Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc. +# Copyright (C) 1993, 94, 95, 96, 97, 99 Free Software Foundation, Inc. # This file is part of the GNU C Library. # Contributed by Brendan Kehoe (brendan@zen.org). @@ -17,6 +17,10 @@ # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, # Boston, MA 02111-1307, USA. +ifeq ($(subdir),db2) +CPPFLAGS += -DHAVE_SPINLOCKS=1 -DHAVE_ASSEM_ALPHA=1 +endif + ifeq ($(subdir),gmon) sysdep_routines += _mcount endif diff --git a/timezone/test-tz.c b/timezone/test-tz.c index 28e1e37010..af37d8ae6a 100644 --- a/timezone/test-tz.c +++ b/timezone/test-tz.c @@ -34,7 +34,7 @@ main (int argc, char ** argv) for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i) { - setenv ("TZ", tests[i].env); + setenv ("TZ", tests[i].env, 1); t = mktime (&tm); if (t != tests[i].expected) { |