UNW_IS_FPREG(3) Programming Library UNW_IS_FPREG(3)NAME
unw_is_fpreg -- check if a register is a floating-point register
SYNOPSIS
#include <libunwind.h>
int unw_is_fpreg(unw_regnum_t reg);
DESCRIPTION
The unw_is_fpreg() routine checks whether register number reg is a floating-point register.
This routine is normally implemented as a macro and applications should not attempt to take its address.
RETURN VALUE
The unw_is_fpreg() routine returns a non-zero value if reg is a floating-point register. Otherwise, it returns a value of 0.
THREAD AND SIGNAL SAFETY
unw_is_fpreg() is thread-safe as well as safe to use from a signal handler.
SEE ALSO libunwind(3), unw_get_reg(3), unw_set_reg(3), unw_get_fpreg(3), unw_set_fpreg(3)AUTHOR
David Mosberger-Tang
Email: dmosberger@gmail.com
WWW: http://www.nongnu.org/libunwind/.
Programming Library 16 August 2007 UNW_IS_FPREG(3)
Check Out this Related Man Page
UNW_IS_SIGNAL_FRAME(3) Programming Library UNW_IS_SIGNAL_FRAME(3)NAME
unw_is_signal_frame -- check if current frame is a signal frame
SYNOPSIS
#include <libunwind.h>
int unw_is_signal_frame(unw_cursor_t *cp);
DESCRIPTION
The unw_is_signal_frame() routine returns a positive value if the current frame identified by cp is a signal frame, and a value of 0 other-
wise. For the purpose of this discussion, a signal frame is a frame that was created in response to a potentially asynchronous interrup-
tion. For UNIX and UNIX-like platforms, such frames are normally created by the kernel when delivering a signal. In a kernel-environment,
a signal frame might, for example, correspond to a frame created in response to a device interrupt.
Signal frames are somewhat unusual because the asynchronous nature of the events that create them require storing the contents of registers
that are normally treated as scratch (``caller-saved'') registers.
RETURN VALUE
On successful completion, unw_is_signal_frame() returns a positive value if the current frame is a signal frame, or 0 if it is not. Other-
wise, a negative value of one of the error-codes below is returned.
THREAD AND SIGNAL SAFETY
unw_is_signal_frame() is thread-safe as well as safe to use from a signal handler.
ERRORS
UNW_ENOINFO
Libunwind is unable to determine whether or not the current frame is a signal frame.
SEE ALSO libunwind(3), unw_get_reg(3), unw_set_reg(3), unw_get_fpreg(3), unw_set_fpreg(3)AUTHOR
David Mosberger-Tang
Email: dmosberger@gmail.com
WWW: http://www.nongnu.org/libunwind/.
Programming Library 16 August 2007 UNW_IS_SIGNAL_FRAME(3)
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