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Add systemtap probe markers for sin, cos, asin and acos

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Siddhesh Poyarekar 2013-11-20 07:46:48 +05:30
parent b2f386c18f
commit f3fd2628d8
3 changed files with 57 additions and 0 deletions
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10
ChangeLog
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@ -1,3 +1,13 @@
2013-11-20 Siddhesh Poyarekar <siddhesh@redhat.com>
* manual/probes.texi (Mathematical Function Probes): Add
documentation for sin, cos, asin and acos probes.
* sysdeps/ieee754/dbl-64/sincos32.c: Include stap-probe.h.
(__sin32): Add slowasin probe.
(__cos32): Add slowacos probe.
(__mpsin): Add slowsin probe.
(__mpcos): Add slowcos probe.
2013-11-19 Joseph Myers <joseph@codesourcery.com>
[BZ #15483]

42
manual/probes.texi
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@ -353,3 +353,45 @@ results in multiple precision computation with precision 32. Argument
@var{$arg1} is the input to the function and @var{$arg2} is the computed
result.
@end deftp
@deftp Probe slowasin (double @var{$arg1}, double @var{$arg2})
This probe is hit when the @code{asin} function is called with an input that
results in multiple precision computation with precision 32. Argument
@var{$arg1} is the input to the function and @var{$arg2} is the computed
result.
@end deftp
@deftp Probe slowacos (double @var{$arg1}, double @var{$arg2})
This probe is hit when the @code{acos} function is called with an input that
results in multiple precision computation with precision 32. Argument
@var{$arg1} is the input to the function and @var{$arg2} is the computed
result.
@end deftp
@deftp Probe slowsin (double @var{$arg1}, double @var{$arg2})
This probe is hit when the @code{sin} function is called with an input that
results in multiple precision computation with precision 32. Argument
@var{$arg1} is the input to the function and @var{$arg2} is the computed
result.
@end deftp
@deftp Probe slowcos (double @var{$arg1}, double @var{$arg2})
This probe is hit when the @code{cos} function is called with an input that
results in multiple precision computation with precision 32. Argument
@var{$arg1} is the input to the function and @var{$arg2} is the computed
result.
@end deftp
@deftp Probe slowsin_dx (double @var{$arg1}, double @var{$arg2}, double @var{$arg3})
This probe is hit when the @code{sin} function is called with an input that
results in multiple precision computation with precision 32. Argument
@var{$arg1} is the input to the function, @var{$arg2} is the error bound of
@var{$arg1} and @var{$arg3} is the computed result.
@end deftp
@deftp Probe slowcos_dx (double @var{$arg1}, double @var{$arg2}, double @var{$arg3})
This probe is hit when the @code{cos} function is called with an input that
results in multiple precision computation with precision 32. Argument
@var{$arg1} is the input to the function, @var{$arg2} is the error bound of
@var{$arg1} and @var{$arg3} is the computed result.
@end deftp

5
sysdeps/ieee754/dbl-64/sincos32.c
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@ -43,6 +43,7 @@
#include "mpa.h"
#include "sincos32.h"
#include <math_private.h>
#include <stap-probe.h>
#ifndef SECTION
# define SECTION
@ -149,6 +150,7 @@ __sin32 (double x, double res, double res1)
/* if a > 0 return min (res, res1), otherwise return max (res, res1). */
if ((a.d[0] > 0 && res >= res1) || (a.d[0] <= 0 && res <= res1))
res = res1;
LIBC_PROBE (slowasin, 2, &res, &x);
return res;
}
@ -182,6 +184,7 @@ __cos32 (double x, double res, double res1)
/* if a > 0 return max (res, res1), otherwise return min (res, res1). */
if ((a.d[0] > 0 && res <= res1) || (a.d[0] <= 0 && res >= res1))
res = res1;
LIBC_PROBE (slowacos, 2, &res, &x);
return res;
}
@ -240,6 +243,7 @@ __mpsin (double x, double dx, bool reduce_range)
default:
__mp_dbl (&s, &y, p);
}
LIBC_PROBE (slowsin, 3, &x, &dx, &y);
return y;
}
@ -298,6 +302,7 @@ __mpcos (double x, double dx, bool reduce_range)
default:
__mp_dbl (&c, &y, p);
}
LIBC_PROBE (slowcos, 3, &x, &dx, &y);
return y;
}