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* sysdeps/alpha/strlen.c (strlen): Fix cmpbge insn, and returning

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of the byte that was zero, so we return a valid number.
Mon Apr 17 12:02:49 1995  Brendan Kehoe  (brendan@zen.org)

	* sysdeps/alpha/strlen.c (strlen): Fix cmpbge insn, and returning
	of the byte that was zero, so we return a valid number.

	* sysdeps/unix/bsd/ultrix4/mips/sysdep.h: New file defining
This commit is contained in:
Brendan Kehoe 1995-04-17 22:02:01 +00:00
parent e0585da111
commit 5fa2588651
2 changed files with 11 additions and 5 deletions
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7
ChangeLog
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@ -1,6 +1,11 @@
Mon Apr 17 12:02:49 1995 Brendan Kehoe (brendan@zen.org)
* sysdeps/alpha/strlen.c (strlen): Fix cmpbge insn, and returning
of the byte that was zero, so we return a valid number.
Sun Apr 16 03:23:09 1995 Brendan Kehoe (brendan@zen.org)
* /sysdeps/unix/bsd/ultrix4/mips/sysdep.h: New file defining
* sysdeps/unix/bsd/ultrix4/mips/sysdep.h: New file defining
NO_UNDERSCORES then using sysdeps/unix/mips/sysdep.h.
Fri Apr 14 18:49:03 1995 Brendan Kehoe (brendan@zen.org)

9
sysdeps/alpha/strlen.c
View File

@ -36,19 +36,20 @@ strlen (const char *str)
for (;;)
{
const unsigned long int longword = *longword_ptr++;
int mask;
asm ("cmpbge %1, %2, %0" : "=r" (mask) : "r" (0), "r" (*longword_ptr++));
/* Set bits in MASK if bytes in LONGWORD are zero. */
asm ("cmpbge $31, %1, %0" : "=r" (mask) : "r" (longword));
if (mask)
{
/* Which of the bytes was the zero? */
const char *cp = (const char *) (longword_ptr - 1);
int i;
for (i = 0; i < 6; i++)
for (i = 0; i < 8; i++)
if (cp[i] == 0)
return cp - str + i;
return cp - str + 7;
}
}
}