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-rw-r--r--libpthread/nptl/unwind.c176
1 files changed, 0 insertions, 176 deletions
diff --git a/libpthread/nptl/unwind.c b/libpthread/nptl/unwind.c
deleted file mode 100644
index 56a423815..000000000
--- a/libpthread/nptl/unwind.c
+++ /dev/null
@@ -1,176 +0,0 @@
-/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>
- and Richard Henderson <rth@redhat.com>, 2003.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <setjmp.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "pthreadP.h"
-#include "jmpbuf-unwind.h"
-
-#ifdef HAVE_FORCED_UNWIND
-
-#ifdef _STACK_GROWS_DOWN
-# define FRAME_LEFT(frame, other, adj) \
- ((uintptr_t) frame - adj >= (uintptr_t) other - adj)
-#elif _STACK_GROWS_UP
-# define FRAME_LEFT(frame, other, adj) \
- ((uintptr_t) frame - adj <= (uintptr_t) other - adj)
-#else
-# error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
-#endif
-
-static _Unwind_Reason_Code
-unwind_stop (int version, _Unwind_Action actions,
- _Unwind_Exception_Class exc_class,
- struct _Unwind_Exception *exc_obj,
- struct _Unwind_Context *context, void *stop_parameter)
-{
- struct pthread_unwind_buf *buf = stop_parameter;
- struct pthread *self = THREAD_SELF;
- struct _pthread_cleanup_buffer *curp = THREAD_GETMEM (self, cleanup);
- int do_longjump = 0;
-
- /* Adjust all pointers used in comparisons, so that top of thread's
- stack is at the top of address space. Without that, things break
- if stack is allocated above the main stack. */
- uintptr_t adj = (uintptr_t) self->stackblock + self->stackblock_size;
-
- /* Do longjmp if we're at "end of stack", aka "end of unwind data".
- We assume there are only C frame without unwind data in between
- here and the jmp_buf target. Otherwise simply note that the CFA
- of a function is NOT within it's stack frame; it's the SP of the
- previous frame. */
- if ((actions & _UA_END_OF_STACK)
- || ! _JMPBUF_CFA_UNWINDS_ADJ (buf->cancel_jmp_buf[0].jmp_buf, context,
- adj))
- do_longjump = 1;
-
- if (__builtin_expect (curp != NULL, 0))
- {
- /* Handle the compatibility stuff. Execute all handlers
- registered with the old method which would be unwound by this
- step. */
- struct _pthread_cleanup_buffer *oldp = buf->priv.data.cleanup;
- void *cfa = (void *) _Unwind_GetCFA (context);
-
- if (curp != oldp && (do_longjump || FRAME_LEFT (cfa, curp, adj)))
- {
- do
- {
- /* Pointer to the next element. */
- struct _pthread_cleanup_buffer *nextp = curp->__prev;
-
- /* Call the handler. */
- curp->__routine (curp->__arg);
-
- /* To the next. */
- curp = nextp;
- }
- while (curp != oldp
- && (do_longjump || FRAME_LEFT (cfa, curp, adj)));
-
- /* Mark the current element as handled. */
- THREAD_SETMEM (self, cleanup, curp);
- }
- }
-
- if (do_longjump)
- __libc_unwind_longjmp ((struct __jmp_buf_tag *) buf->cancel_jmp_buf, 1);
-
- return _URC_NO_REASON;
-}
-
-
-static void
-unwind_cleanup (_Unwind_Reason_Code reason, struct _Unwind_Exception *exc)
-{
- /* When we get here a C++ catch block didn't rethrow the object. We
- cannot handle this case and therefore abort. */
-# define STR_N_LEN(str) str, strlen (str)
- INTERNAL_SYSCALL_DECL (err);
- INTERNAL_SYSCALL (write, err, 3, STDERR_FILENO,
- STR_N_LEN ("FATAL: exception not rethrown\n"));
- abort ();
-}
-
-#endif /* have forced unwind */
-
-
-void
-__cleanup_fct_attribute __attribute ((noreturn))
-__pthread_unwind (__pthread_unwind_buf_t *buf)
-{
- struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
- struct pthread *self = THREAD_SELF;
-
-#ifdef HAVE_FORCED_UNWIND
- /* This is not a catchable exception, so don't provide any details about
- the exception type. We do need to initialize the field though. */
- THREAD_SETMEM (self, exc.exception_class, 0);
- THREAD_SETMEM (self, exc.exception_cleanup, unwind_cleanup);
-
- _Unwind_ForcedUnwind (&self->exc, unwind_stop, ibuf);
-#else
- /* Handle the compatibility stuff first. Execute all handlers
- registered with the old method. We don't execute them in order,
- instead, they will run first. */
- struct _pthread_cleanup_buffer *oldp = ibuf->priv.data.cleanup;
- struct _pthread_cleanup_buffer *curp = THREAD_GETMEM (self, cleanup);
-
- if (curp != oldp)
- {
- do
- {
- /* Pointer to the next element. */
- struct _pthread_cleanup_buffer *nextp = curp->__prev;
-
- /* Call the handler. */
- curp->__routine (curp->__arg);
-
- /* To the next. */
- curp = nextp;
- }
- while (curp != oldp);
-
- /* Mark the current element as handled. */
- THREAD_SETMEM (self, cleanup, curp);
- }
-
- /* We simply jump to the registered setjmp buffer. */
- __libc_unwind_longjmp ((struct __jmp_buf_tag *) ibuf->cancel_jmp_buf, 1);
-#endif
- /* NOTREACHED */
-
- /* We better do not get here. */
- abort ();
-}
-hidden_def (__pthread_unwind)
-
-
-void
-__cleanup_fct_attribute __attribute ((noreturn))
-__pthread_unwind_next (__pthread_unwind_buf_t *buf)
-{
- struct pthread_unwind_buf *ibuf = (struct pthread_unwind_buf *) buf;
-
- __pthread_unwind ((__pthread_unwind_buf_t *) ibuf->priv.data.prev);
-}
-hidden_def (__pthread_unwind_next)