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Add cygwin_internal() operation to retrieve the EXCEPTION_RECORD from a siginfo_t * 

* external.cc (cygwin_internal): Add operation to retrieve a copy
	of the EXCEPTION_RECORD from a siginfo_t *.
	* include/sys/cygwin.h (cygwin_getinfo_types): Ditto.
	* exception.h (cygwin_exception): Add exception_record accessor.

Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
This commit is contained in:
Jon TURNEY 2015-03-30 20:56:03 +01:00
parent abf6791ecb
commit 431b28c196
4 changed files with 26 additions and 1 deletions
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7
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,10 @@
2015-04-01 Jon TURNEY <jon.turney@dronecode.org.uk>
* external.cc (cygwin_internal): Add operation to retrieve a copy
of the EXCEPTION_RECORD from a siginfo_t *.
* include/sys/cygwin.h (cygwin_getinfo_types): Ditto.
* exception.h (cygwin_exception): Add exception_record accessor.
2015-04-01 Jon TURNEY <jon.turney@dronecode.org.uk>
* include/cygwin/signal.h : Rename struct ucontext to struct

1
winsup/cygwin/exception.h
View File

@ -175,4 +175,5 @@ public:
framep (in_framep), ctx (in_ctx), e (in_e), h (NULL) {}
void dumpstack ();
PCONTEXT context () const {return ctx;}
EXCEPTION_RECORD *exception_record () const {return e;}
};

14
winsup/cygwin/external.cc
View File

@ -27,6 +27,7 @@ details. */
#include "environ.h"
#include "cygserver_setpwd.h"
#include "pwdgrp.h"
#include "exception.h"
#include <unistd.h>
#include <stdlib.h>
#include <wchar.h>
@ -688,6 +689,19 @@ cygwin_internal (cygwin_getinfo_types t, ...)
res = 0;
break;
case CW_EXCEPTION_RECORD_FROM_SIGINFO_T:
{
siginfo_t *si = va_arg(arg, siginfo_t *);
EXCEPTION_RECORD *er = va_arg(arg, EXCEPTION_RECORD *);
if (si && si->si_cyg && er)
{
memcpy(er, ((cygwin_exception *)si->si_cyg)->exception_record(),
sizeof(EXCEPTION_RECORD));
res = 0;
}
}
break;
default:
set_errno (ENOSYS);
}

5
winsup/cygwin/include/sys/cygwin.h
View File

@ -1,3 +1,4 @@
/* sys/cygwin.h
Copyright 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
@ -153,7 +154,8 @@ typedef enum
CW_CYGNAME_FROM_WINNAME,
CW_FIXED_ATEXIT,
CW_GETNSS_PWD_SRC,
CW_GETNSS_GRP_SRC
CW_GETNSS_GRP_SRC,
CW_EXCEPTION_RECORD_FROM_SIGINFO_T,
} cygwin_getinfo_types;
#define CW_LOCK_PINFO CW_LOCK_PINFO
@ -214,6 +216,7 @@ typedef enum
#define CW_FIXED_ATEXIT CW_FIXED_ATEXIT
#define CW_GETNSS_PWD_SRC CW_GETNSS_PWD_SRC
#define CW_GETNSS_GRP_SRC CW_GETNSS_GRP_SRC
#define CW_EXCEPTION_RECORD_FROM_SIGINFO_T CW_EXCEPTION_RECORD_FROM_SIGINFO_T
/* Token type for CW_SET_EXTERNAL_TOKEN */
enum