Replace valid memory checks with new myfault class "exception handling", almost

everywhere.  Leave some thread.cc stuff alone for now.
* cygtls.h: Kludge some definitions to avoid including a problematic windows
header.
(_cygtls::_myfault): New entry.
(_cygtls::_myfault_errno): Ditto.
(_cygtls::fault_guarded): New function.
(_cygtls::setup_fault): Ditto.
(_cygtls::return_from_fault): Ditto.
(_cygtls::clear_fault): Ditto.
(myfault): New class.
* exceptions.cc (handle_exceptions): Handle case of guarded fault in system
routine.
* gendef: Add another entry point for setjmp that the compiler doesn't know
about and won't complain about.
* gentls_offsets: Just include windows.h rather than kludging a HANDLE def.
* miscfuncs.cc (check_null_str): Delete.
(check_null_empty_str): Ditto.
(check_null_empty_str_errno): Ditto.
(check_null_str_errno): Ditto.
(__check_null_invalid_struct): Ditto.
(__check_null_invalid_struct_errno): Ditto.
(__check_invalid_read_ptr): Ditto.
(__check_invalid_read_ptr_errno): Ditto.
(dummytest): New function.
(check_iovec_for_read): Delete.
(chec_iovec): Rename from check_iovec_for_write.  Take a read/write parameter.
* tlsoffsets.h: Regenerate.
* winsup.h: Remove check_* declarations.
(check_iovec_for_read): Delete declaration.  Turn into a define instead.
(check_iovec_for_write): Ditto.
(check_iovec): New declaration.
* thread.h: Use ifdef guard name consistent with other header files.

1 files changed, 65 insertions, 57 deletions

diff --git a/winsup/cygwin/tlsoffsets.h b/winsup/cygwin/tlsoffsets.h
index bda6bd173..448f24f8f 100644
--- a/winsup/cygwin/tlsoffsets.h
+++ b/winsup/cygwin/tlsoffsets.h
@@ -1,117 +1,125 @@
 //;# autogenerated:  Do not edit.
 
-//; $tls::sizeof__cygtls = 3972;
-//; $tls::func = -3972;
+//; $tls::sizeof__cygtls = 3980;
+//; $tls::func = -3980;
 //; $tls::pfunc = 0;
-//; $tls::saved_errno = -3968;
+//; $tls::saved_errno = -3976;
 //; $tls::psaved_errno = 4;
-//; $tls::sa_flags = -3964;
+//; $tls::sa_flags = -3972;
 //; $tls::psa_flags = 8;
-//; $tls::oldmask = -3960;
+//; $tls::oldmask = -3968;
 //; $tls::poldmask = 12;
-//; $tls::deltamask = -3956;
+//; $tls::deltamask = -3964;
 //; $tls::pdeltamask = 16;
-//; $tls::event = -3952;
+//; $tls::event = -3960;
 //; $tls::pevent = 20;
-//; $tls::errno_addr = -3948;
+//; $tls::errno_addr = -3956;
 //; $tls::perrno_addr = 24;
-//; $tls::initialized = -3944;
+//; $tls::initialized = -3952;
 //; $tls::pinitialized = 28;
-//; $tls::sigmask = -3940;
+//; $tls::sigmask = -3948;
 //; $tls::psigmask = 32;
-//; $tls::sigwait_mask = -3936;
+//; $tls::sigwait_mask = -3944;
 //; $tls::psigwait_mask = 36;
-//; $tls::sigwait_info = -3932;
+//; $tls::sigwait_info = -3940;
 //; $tls::psigwait_info = 40;
-//; $tls::threadkill = -3928;
+//; $tls::threadkill = -3936;
 //; $tls::pthreadkill = 44;
-//; $tls::infodata = -3924;
+//; $tls::infodata = -3932;
 //; $tls::pinfodata = 48;
-//; $tls::tid = -3776;
+//; $tls::tid = -3784;
 //; $tls::ptid = 196;
-//; $tls::local_clib = -3772;
+//; $tls::local_clib = -3780;
 //; $tls::plocal_clib = 200;
-//; $tls::__dontuse = -3772;
+//; $tls::__dontuse = -3780;
 //; $tls::p__dontuse = 200;
-//; $tls::locals = -2708;
+//; $tls::locals = -2716;
 //; $tls::plocals = 1264;
-//; $tls::_ctinfo = -1084;
+//; $tls::_ctinfo = -1092;
 //; $tls::p_ctinfo = 2888;
+//; $tls::_myfault = -1088;
+//; $tls::p_myfault = 2892;
+//; $tls::_myfault_errno = -1084;
+//; $tls::p_myfault_errno = 2896;
 //; $tls::wq = -1080;
-//; $tls::pwq = 2892;
+//; $tls::pwq = 2900;
 //; $tls::prev = -1052;
-//; $tls::pprev = 2920;
+//; $tls::pprev = 2928;
 //; $tls::next = -1048;
-//; $tls::pnext = 2924;
+//; $tls::pnext = 2932;
 //; $tls::stackptr = -1044;
-//; $tls::pstackptr = 2928;
+//; $tls::pstackptr = 2936;
 //; $tls::sig = -1040;
-//; $tls::psig = 2932;
+//; $tls::psig = 2940;
 //; $tls::incyg = -1036;
-//; $tls::pincyg = 2936;
+//; $tls::pincyg = 2944;
 //; $tls::spinning = -1032;
-//; $tls::pspinning = 2940;
+//; $tls::pspinning = 2948;
 //; $tls::stacklock = -1028;
-//; $tls::pstacklock = 2944;
+//; $tls::pstacklock = 2952;
 //; $tls::stack = -1024;
-//; $tls::pstack = 2948;
+//; $tls::pstack = 2956;
 //; $tls::padding = 0;
-//; $tls::ppadding = 3972;
+//; $tls::ppadding = 3980;
 //; __DATA__
 
-#define tls_func (-3972)
+#define tls_func (-3980)
 #define tls_pfunc (0)
-#define tls_saved_errno (-3968)
+#define tls_saved_errno (-3976)
 #define tls_psaved_errno (4)
-#define tls_sa_flags (-3964)
+#define tls_sa_flags (-3972)
 #define tls_psa_flags (8)
-#define tls_oldmask (-3960)
+#define tls_oldmask (-3968)
 #define tls_poldmask (12)
-#define tls_deltamask (-3956)
+#define tls_deltamask (-3964)
 #define tls_pdeltamask (16)
-#define tls_event (-3952)
+#define tls_event (-3960)
 #define tls_pevent (20)
-#define tls_errno_addr (-3948)
+#define tls_errno_addr (-3956)
 #define tls_perrno_addr (24)
-#define tls_initialized (-3944)
+#define tls_initialized (-3952)
 #define tls_pinitialized (28)
-#define tls_sigmask (-3940)
+#define tls_sigmask (-3948)
 #define tls_psigmask (32)
-#define tls_sigwait_mask (-3936)
+#define tls_sigwait_mask (-3944)
 #define tls_psigwait_mask (36)
-#define tls_sigwait_info (-3932)
+#define tls_sigwait_info (-3940)
 #define tls_psigwait_info (40)
-#define tls_threadkill (-3928)
+#define tls_threadkill (-3936)
 #define tls_pthreadkill (44)
-#define tls_infodata (-3924)
+#define tls_infodata (-3932)
 #define tls_pinfodata (48)
-#define tls_tid (-3776)
+#define tls_tid (-3784)
 #define tls_ptid (196)
-#define tls_local_clib (-3772)
+#define tls_local_clib (-3780)
 #define tls_plocal_clib (200)
-#define tls___dontuse (-3772)
+#define tls___dontuse (-3780)
 #define tls_p__dontuse (200)
-#define tls_locals (-2708)
+#define tls_locals (-2716)
 #define tls_plocals (1264)
-#define tls__ctinfo (-1084)
+#define tls__ctinfo (-1092)
 #define tls_p_ctinfo (2888)
+#define tls__myfault (-1088)
+#define tls_p_myfault (2892)
+#define tls__myfault_errno (-1084)
+#define tls_p_myfault_errno (2896)
 #define tls_wq (-1080)
-#define tls_pwq (2892)
+#define tls_pwq (2900)
 #define tls_prev (-1052)
-#define tls_pprev (2920)
+#define tls_pprev (2928)
 #define tls_next (-1048)
-#define tls_pnext (2924)
+#define tls_pnext (2932)
 #define tls_stackptr (-1044)
-#define tls_pstackptr (2928)
+#define tls_pstackptr (2936)
 #define tls_sig (-1040)
-#define tls_psig (2932)
+#define tls_psig (2940)
 #define tls_incyg (-1036)
-#define tls_pincyg (2936)
+#define tls_pincyg (2944)
 #define tls_spinning (-1032)
-#define tls_pspinning (2940)
+#define tls_pspinning (2948)
 #define tls_stacklock (-1028)
-#define tls_pstacklock (2944)
+#define tls_pstacklock (2952)
 #define tls_stack (-1024)
-#define tls_pstack (2948)
+#define tls_pstack (2956)
 #define tls_padding (0)
-#define tls_ppadding (3972)
+#define tls_ppadding (3980)