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19025d77ad
Reorganized. Created a new top level include directory that will hold all of Trick's header files. Moved all of the Trick headers to this directory. Created a libexec directory that holds all of the executables that users don't need to execute directly. Changed all of the executables remaining in bin to start with "trick-". In the sim_services directories changed all source files to find the Trick headers in their new location. Since all of the include files are gone in sim_services, removed the src directories as well, moving all of the source files up a level. Moved the makefiles, docs, man, and other architecture independent files into a top level share directory. Renamed lib_${TRICK_HOST_CPU} to lib64 or lib depending on the platform we're currently on.
refs #63
108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
/*
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PURPOSE: (Floating point exception handler)
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PROGRAMMERS: (((Robert W. Bailey) (LinCom) (April 1992) (--) (Realtime)))
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#ifdef __APPLE__
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#include <mach-o/dyld.h>
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#endif
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/*
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* FPE specific headers
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*/
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#ifdef __linux
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#include <fenv.h>
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#endif
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#include "trick/Executive.hh"
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#include "trick/exec_proto.h"
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#include "trick/message_proto.h"
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/**
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@design
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-# This signal handler processes SIGFPE
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-# Write a message to stderr that a signal has been caught.
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-# In Linux print out the type of floating point error that occured.
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-# If attach_debugger == true, attempt to attach a debugger to the current process.
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-# Else if stack_trace == true, attempt to attach a debugger to print a stack trace.
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-# Exit the process with a -2 return.
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*/
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void Trick::Executive::fpe_handler(siginfo_t * sip __attribute__((unused)) ) {
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write( 2 , "\033[31mProcess terminated by signal FPE" , 36 ) ;
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#if __linux
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/* Determine what floating point error occurred */
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if (sip != (siginfo_t *) NULL) {
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switch (sip->si_code) {
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case FPE_FLTRES: /* inexact */
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write( 2, " (inexact)", 10 );
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return ;
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case FPE_FLTUND: /* underflow */
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write( 2, " (floating point underflow)", 27 );
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break;
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case FPE_FLTINV: /* invalid operand */
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write( 2, " (invalid operand)", 18 );
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break;
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case FPE_FLTDIV: /* division-by-zero */
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write( 2, " (floating point division-by-zero)", 34);
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break;
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case FPE_FLTOVF: /* overflow */
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write( 2, " (floating point overflow)", 26);
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break;
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case FPE_INTOVF: /* integer overflow */
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write( 2, " (integer overflow)", 19);
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break;
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case FPE_INTDIV: /* integer division-by-zero */
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write( 2, " (integer division-by-zero)", 27);
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break;
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default:
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break;
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}
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}
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#endif
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write( 2 , "\033[0m\n" , 5 ) ;
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/*
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Attempt to attach with debugger or print stack trace. Not a requirement.
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sprintf and system are not async signal safe, but we don't have anything to lose.
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*/
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#if __linux
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char command[1024];
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if (attach_debugger == true) {
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sprintf(command, "%s -silent /proc/%d/exe %d", debugger_command.c_str(), getpid(), getpid());
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system(command);
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} else if (stack_trace == true ) {
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sprintf(command, "%s -silent -batch -x ${TRICK_HOME}/bin/gdb_commands "
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"/proc/%d/exe %d | grep -A 20 \"signal handler\"", debugger_command.c_str(), getpid(), getpid());
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system(command);
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}
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#elif __APPLE__
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char command[2048];
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char path[1024] ;
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uint32_t size = sizeof(path) ;
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if (_NSGetExecutablePath(path, &size) == 0 ) {
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if (attach_debugger == true) {
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write( 2 , "Attempting to attach debugger... standby.\n" , 41 ) ;
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sprintf(command, "%s -silent %s %d", debugger_command.c_str(), path, getpid());
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system(command);
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} else if (stack_trace == true ) {
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write( 2 , "Attempting to generate stack trace... standby.\n" , 47 ) ;
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sprintf(command, "%s -batch -x ${TRICK_HOME}/bin/gdb_commands "
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"%s %d", debugger_command.c_str(), path, getpid());
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system(command);
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}
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}
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#endif
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// The user has chosen for Trick to intervene on their behalf. Exit if handler called.
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_exit(-2) ;
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}
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