Manual Pages for UNIX Operating System command usage for man td_thr_setgregs

Threads Debugging Library Functions        td_thr_getgregs(3C_DB)



NAME
     td_thr_getgregs,     td_thr_setgregs,      td_thr_getfpregs,
     td_thr_setfpregs,    td_thr_getxregsize,    td_thr_getxregs,
     td_thr_setxregs - reading and writing  thread  registers  in
     libc_db

SYNOPSIS
     cc [ flag... ] file... -lc_db [ library... ]
     #include 
     #include 

     td_err_e td_thr_getgregs(const td_thrhandle_t *th_p, prgregset_tgregset);


     td_err_e td_thr_setgregs(const td_thrhandle_t *th_p, prgregset_tgregset);


     td_err_e td_thr_getfpregs(const td_thrhandle_t *th_p, prfpregset_t *fpregset);


     td_err_e td_thr_setfpregs(const td_thrhandle_t *th_p, prfpregset_t *fpregset);


     td_err_e td_thr_getxregsize(const td_thrhandle_t *th_p, int *xregsize);


     td_err_e td_thr_getxregs(const td_thrhandle_t *th_p, prxregset_t *xregset);


     td_err_e td_thr_setxregs(const td_thrhandle_t *th_p, prxregset_t *xregset);


DESCRIPTION
     These functions read and write the register sets  associated
     with     thread     th_p.    The    td_thr_getgregs()    and
     td_thr_setgregs() functions get and set,  respectively,  the
     general registers of thread th_p. The td_thr_getfpregs() and
     td_thr_setfpregs() functions get and set, respectively,  the
     thread's     floating     point     register     set.    The
     td_thr_getxregsize(),         td_thr_getxregs(),         and
     td_thr_setxregs()    functions   are   SPARC-specific.   The
     td_thr_getxregsize() function returns in *xregsize the  size
     of  the  architecture-dependent  extra  state registers. The
     td_thr_getxregs() and td_thr_setxregs()  functions  get  and
     set, respectively, those extra state registers. On non-SPARC
     architectures, these functions return TD_NOXREGS.


     If the thread specified by th_p is currently executing on  a
     lightweight  process  ( LWP), these functions read or write,
     respectively, the appropriate register set to the LWP  using
     the  imported  interface.  If  the  thread is not  currently



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Threads Debugging Library Functions        td_thr_getgregs(3C_DB)



     executing on an LWP, the  floating  point  and  extra  state
     registers may cannot be read or written. Some of the general
     registers might also not be readable or writable,  depending
     on  the  architecture,  in which case td_thr_getfpregs() and
     td_thr_setfpregs() return  TD_NOFPREGS and td_thr_getxregs()
     and    td_thr_setxregs()    will    TD_NOXREGS.   Calls   to
     td_thr_getgregs() and td_thr_setgregs() succeed, but  values
     returned  for  unreadable  registers  are  undefined, values
     specified for unwritable  registers  are  ignored.  In  this
     instance,   and   TD_PARTIALREGS   is   returned.   See  the
     architecture-specific notes that follow regarding the regis-
     ters that may be read and written for a thread not currently
     executing on an LWP.

  SPARC
     On a thread not currently assigned to an LWP, only  %i0-%i7,
     %l0-%l7,  %g7,  %pc,  and  %sp (%o6) can be read or written.
     %pc and %sp refer to the program counter and  stack  pointer
     that the thread will have when it resumes execution.

  x86 Architecture
     On a thread not currently assigned to an LWP, only %pc, %sp,
     %ebp, %edi, %edi, and %ebx can be read.

RETURN VALUES
     TD_OK             The call completed successfully.


     TD_BADTH          An invalid thread handle was passed in.


     TD_DBERR          A call to one of  the  imported  interface
                       routines failed.


     TD_PARTIALREGS    Because  the  thread  is   not   currently
                       assigned  to a LWP, not all registers were
                       read or written.  See  DESCRIPTION  for  a
                       discussion  about  which registers are not
                       saved when a thread is not assigned to  an
                       LWP.


     TD_NOFPREGS       Floating point registers could not be read
                       or  written,  either because the thread is
                       not  currently  assigned  to  an  LWP,  or
                       because  the  architecture  does  not have
                       such registers.


     TD_NOXREGS        Architecture-dependent extra state  regis-
                       ters  could not be read or written, either



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Threads Debugging Library Functions        td_thr_getgregs(3C_DB)



                       because  the  thread  is   not   currently
                       assigned  to an LWP, or because the archi-
                       tecture does not have such  registers,  or
                       because  the  architecture  is not a SPARC
                       architecture.


     TD_ERR            A libc_db internal error occurred.


ATTRIBUTES
     See attributes(5) for description of  the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | MT-Level                    | Safe                        |
    |_____________________________|_____________________________|


SEE ALSO
     libc_db(3LIB), attributes(5)






























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