Update.

2002-02-01  H.J. Lu  <hjl@gnu.org>

	* sysdeps/mips/atomicity.h (exchange_and_add): Use branch
	likely.
	(atomic_add): Likewise.
	(compare_and_swap): Return 0 only when failed to compare. Use
	branch likely.

	* sysdeps/unix/sysv/linux/mips/sys/tas.h (_test_and_set): Use
	branch likely.

2002-02-03  kaz Kojima  <kkojima@rr.iij4u.or.jp>

	* sysdeps/sh/dl-machine.h (elf_machine_rela): Fix a typo.

2002-02-02  Ulrich Drepper  <drepper@redhat.com>

	* elf/dl-minimal.c (__strsep): New minimal implementation.

7 files changed, 112 insertions, 65 deletions

diff --git a/ChangeLog b/ChangeLog
index b8f57104cd..43fd4b6b9d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,22 @@
+2002-02-01  H.J. Lu  <hjl@gnu.org>
+
+	* sysdeps/mips/atomicity.h (exchange_and_add): Use branch
+	likely.
+	(atomic_add): Likewise.
+	(compare_and_swap): Return 0 only when failed to compare. Use
+	branch likely.
+
+	* sysdeps/unix/sysv/linux/mips/sys/tas.h (_test_and_set): Use
+	branch likely.
+
+2002-02-03  kaz Kojima  <kkojima@rr.iij4u.or.jp>
+
+	* sysdeps/sh/dl-machine.h (elf_machine_rela): Fix a typo.
+
+2002-02-02  Ulrich Drepper  <drepper@redhat.com>
+
+	* elf/dl-minimal.c (__strsep): New minimal implementation.
+
 2002-02-02  Paul Eggert  <eggert@twinsun.com>
 
 	* src/mktime.c [defined DEBUG && STDC_HEADERS]: Include <string.h>.
diff --git a/elf/dl-minimal.c b/elf/dl-minimal.c
index 001fc6dcd5..efdc26dc62 100644
--- a/elf/dl-minimal.c
+++ b/elf/dl-minimal.c
@@ -291,3 +291,45 @@ _itoa (value, buflim, base, upper_case)
   return bp;
 }
 #endif
+
+
+/* The following is not a complete strsep implementation.  It cannot
+   handle empty delimiter strings.  But this isn't necessary for the
+   execution of ld.so.  */
+#undef strsep
+#undef __strsep
+char *
+__strsep (char **stringp, const char *delim)
+{
+  char *begin;
+
+  begin = *stringp;
+  if (begin != NULL)
+    {
+      char *end = begin;
+
+      while (*end != '\0' || (end = NULL))
+	{
+	  const char *dp = delim;
+
+	  do
+	    if (*dp == *end)
+	      break;
+	  while (*++dp != '\0');
+
+	  if (*dp != '\0')
+	    {
+	      *end++ = '\0';
+	      break;
+	    }
+
+	  ++end;
+	}
+
+      *stringp = end;
+    }
+
+  return begin;
+}
+weak_alias (__strsep, strsep)
+strong_alias (__strsep, __strsep_g)
diff --git a/linuxthreads/sysdeps/mips/pspinlock.c b/linuxthreads/sysdeps/mips/pspinlock.c
index 8c832ae5f6..bf0a2c833d 100644
--- a/linuxthreads/sysdeps/mips/pspinlock.c
+++ b/linuxthreads/sysdeps/mips/pspinlock.c
@@ -29,20 +29,21 @@
 int
 __pthread_spin_lock (pthread_spinlock_t *lock)
 {
-  unsigned int tmp;
+  unsigned int tmp1, tmp2;
 
   asm volatile
     ("\t\t\t# spin_lock\n\t"
+     "ll	%1,%3\n"
      "1:\n\t"
-     "ll	%1,%2\n\t"
      ".set	push\n\t"
      ".set	noreorder\n\t"
      "bnez	%1,1b\n\t"
-     " li	%1,1\n\t"
-     ".set	pop\n\t"
-     "sc	%1,%0\n\t"
-     "beqz	%1,1b"
-     : "=m" (*lock), "=&r" (tmp)
+     " li	%2,1\n\t"
+     "sc	%2,%0\n\t"
+     "beqzl	%2,1b\n\t"
+     " ll	%1,%3\n\t"
+     ".set	pop"
+     : "=m" (*lock), "=&r" (tmp1), "=&r" (tmp2)
      : "m" (*lock)
      : "memory");
 
diff --git a/linuxthreads/sysdeps/mips/pt-machine.h b/linuxthreads/sysdeps/mips/pt-machine.h
index 16e264017d..368235e1a5 100644
--- a/linuxthreads/sysdeps/mips/pt-machine.h
+++ b/linuxthreads/sysdeps/mips/pt-machine.h
@@ -33,41 +33,11 @@
 
 /* Spinlock implementation; required.  */
 
-#if (_MIPS_ISA >= _MIPS_ISA_MIPS2)
-
-PT_EI long int
-testandset (int *spinlock)
-{
-  long int ret, temp;
-
-  __asm__ __volatile__
-    ("/* Inline spinlock test & set */\n\t"
-     "1:\n\t"
-     "ll	%0,%3\n\t"
-     ".set	push\n\t"
-     ".set	noreorder\n\t"
-     "bnez	%0,2f\n\t"
-     " li	%1,1\n\t"
-     ".set	pop\n\t"
-     "sc	%1,%2\n\t"
-     "beqz	%1,1b\n"
-     "2:\n\t"
-     "/* End spinlock test & set */"
-     : "=&r" (ret), "=&r" (temp), "=m" (*spinlock)
-     : "m" (*spinlock)
-     : "memory");
-
-  return ret;
-}
-
-#else /* !(_MIPS_ISA >= _MIPS_ISA_MIPS2) */
-
 PT_EI long int
 testandset (int *spinlock)
 {
   return _test_and_set (spinlock, 1);
 }
-#endif /* !(_MIPS_ISA >= _MIPS_ISA_MIPS2) */
 
 
 /* Get some notion of the current stack.  Need not be exactly the top
@@ -84,22 +54,24 @@ register char * stack_pointer __asm__ ("$29");
 PT_EI int
 __compare_and_swap (long int *p, long int oldval, long int newval)
 {
-  long int ret;
+  long int ret, temp;
 
   __asm__ __volatile__
     ("/* Inline compare & swap */\n\t"
+     "ll	%1,%5\n"
      "1:\n\t"
-     "ll	%0,%4\n\t"
-     ".set	push\n"
+     ".set	push\n\t"
      ".set	noreorder\n\t"
-     "bne	%0,%2,2f\n\t"
-     " move	%0,%3\n\t"
-     ".set	pop\n\t"
-     "sc	%0,%1\n\t"
-     "beqz	%0,1b\n"
+     "bne	%1,%3,2f\n\t"
+     " move	%0,$0\n\t"
+     "move	%0,%4\n\t"
+     "sc	%0,%2\n\t"
+     "beqzl	%0,1b\n\t"
+     " ll	%1,%5\n\t"
+     ".set	pop\n"
      "2:\n\t"
      "/* End compare & swap */"
-     : "=&r" (ret), "=m" (*p)
+     : "=&r" (ret), "=&r" (temp), "=m" (*p)
      : "r" (oldval), "r" (newval), "m" (*p)
      : "memory");
 
diff --git a/sysdeps/mips/atomicity.h b/sysdeps/mips/atomicity.h
index 1fe1b7aebb..4d185075c4 100644
--- a/sysdeps/mips/atomicity.h
+++ b/sysdeps/mips/atomicity.h
@@ -33,11 +33,15 @@ exchange_and_add (volatile uint32_t *mem, int val)
 
   __asm__ __volatile__
     ("/* Inline exchange & add */\n\t"
+     "ll	%0,%3\n"
      "1:\n\t"
-     "ll	%0,%3\n\t"
      "addu	%1,%4,%0\n\t"
      "sc	%1,%2\n\t"
-     "beqz	%1,1b\n\t"
+     ".set	push\n\t"
+     ".set	noreorder\n\t"
+     "beqzl	%1,1b\n\t"
+     " ll	%0,%3\n\t"
+     ".set	pop\n\t"
      "/* End exchange & add */"
      : "=&r"(result), "=&r"(tmp), "=m"(*mem)
      : "m" (*mem), "r"(val)
@@ -54,11 +58,15 @@ atomic_add (volatile uint32_t *mem, int val)
 
   __asm__ __volatile__
     ("/* Inline atomic add */\n\t"
+     "ll	%0,%2\n"
      "1:\n\t"
-     "ll	%0,%2\n\t"
      "addu	%0,%3,%0\n\t"
      "sc	%0,%1\n\t"
-     "beqz	%0,1b\n\t"
+     ".set	push\n\t"
+     ".set	noreorder\n\t"
+     "beqzl	%0,1b\n\t"
+     " ll	%0,%2\n\t"
+     ".set	pop\n\t"
      "/* End atomic add */"
      : "=&r"(result), "=m"(*mem)
      : "m" (*mem), "r"(val)
@@ -69,22 +77,24 @@ static inline int
 __attribute__ ((unused))
 compare_and_swap (volatile long int *p, long int oldval, long int newval)
 {
-  long int ret;
+  long int ret, temp;
 
   __asm__ __volatile__
     ("/* Inline compare & swap */\n\t"
+     "ll	%1,%5\n"
      "1:\n\t"
-     "ll	%0,%4\n\t"
-     ".set	push\n"
+     ".set	push\n\t"
      ".set	noreorder\n\t"
-     "bne	%0,%2,2f\n\t"
-     "move	%0,%3\n\t"
-     ".set	pop\n\t"
-     "sc	%0,%1\n\t"
-     "beqz	%0,1b\n"
+     "bne	%1,%3,2f\n\t"
+     " move	%0,$0\n\t"
+     "move	%0,%4\n\t"
+     "sc	%0,%2\n\t"
+     "beqzl	%0,1b\n\t"
+     " ll	%1,%5\n\t"
+     ".set	pop\n"
      "2:\n\t"
      "/* End compare & swap */"
-     : "=&r" (ret), "=m" (*p)
+     : "=&r" (ret), "=&r" (temp), "=m" (*p)
      : "r" (oldval), "r" (newval), "m" (*p)
      : "memory");
 
diff --git a/sysdeps/sh/dl-machine.h b/sysdeps/sh/dl-machine.h
index 72ea757dcb..24e301e5d5 100644
--- a/sysdeps/sh/dl-machine.h
+++ b/sysdeps/sh/dl-machine.h
@@ -513,7 +513,7 @@ elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
 	       found.  */
 	    break;
 	  if (sym->st_size > refsym->st_size
-	      || (sym->st_size < erefsym->st_size && GL(dl_verbose)))
+	      || (sym->st_size < refsym->st_size && GL(dl_verbose)))
 	    {
 	      const char *strtab;
 
diff --git a/sysdeps/unix/sysv/linux/mips/sys/tas.h b/sysdeps/unix/sysv/linux/mips/sys/tas.h
index 0c81dc2de2..339670894f 100644
--- a/sysdeps/unix/sysv/linux/mips/sys/tas.h
+++ b/sysdeps/unix/sysv/linux/mips/sys/tas.h
@@ -42,16 +42,19 @@ _test_and_set (int *p, int v) __THROW
   int r, t;
 
   __asm__ __volatile__
-    ("1:\n\t"
-     "ll	%0,%3\n\t"
+    ("/* Inline test and set */\n\t"
+     "ll	%0,%3\n"
+     "1:\n\t"
      ".set	push\n\t"
      ".set	noreorder\n\t"
      "beq	%0,%4,2f\n\t"
      " move	%1,%4\n\t"
-     ".set	pop\n\t"
      "sc	%1,%2\n\t"
-     "beqz	%1,1b\n"
-     "2:\n"
+     "beqzl	%1,1b\n\t"
+     " ll	%0,%3\n\t"
+     ".set	pop\n"
+     "2:\n\t"
+     "/* End test and set */"
      : "=&r" (r), "=&r" (t), "=m" (*p)
      : "m" (*p), "r" (v)
      : "memory");