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-rw-r--r--nptl/sysdeps/powerpc/jmpbuf-unwind.h31
-rw-r--r--nptl/sysdeps/powerpc/tcb-offsets.sym4
-rw-r--r--nptl/sysdeps/powerpc/tls.h67
3 files changed, 62 insertions, 40 deletions
diff --git a/nptl/sysdeps/powerpc/jmpbuf-unwind.h b/nptl/sysdeps/powerpc/jmpbuf-unwind.h
deleted file mode 100644
index 0b817160d3..0000000000
--- a/nptl/sysdeps/powerpc/jmpbuf-unwind.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Jakub Jelinek <jakub@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 <stdint.h>
-#include <unwind.h>
-
-#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
- _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
-
-#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
- ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[JB_GPR1] - (_adj))
-
-/* We use the normal lobngjmp for unwinding. */
-#define __libc_unwind_longjmp(buf, val) __libc_longjmp (buf, val)
diff --git a/nptl/sysdeps/powerpc/tcb-offsets.sym b/nptl/sysdeps/powerpc/tcb-offsets.sym
index a9701fb5b7..4a8671e802 100644
--- a/nptl/sysdeps/powerpc/tcb-offsets.sym
+++ b/nptl/sysdeps/powerpc/tcb-offsets.sym
@@ -6,10 +6,12 @@
-- Abuse tls.h macros to derive offsets relative to the thread register.
# undef __thread_register
# define __thread_register ((void *) 0)
-# define thread_offsetof(mem) ((void *) &THREAD_SELF->mem - (void *) 0)
+# define thread_offsetof(mem) ((ptrdiff_t) THREAD_SELF + offsetof (struct pthread, mem))
+
#if TLS_MULTIPLE_THREADS_IN_TCB
MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
#endif
PID thread_offsetof (pid)
TID thread_offsetof (tid)
+POINTER_GUARD (offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
diff --git a/nptl/sysdeps/powerpc/tls.h b/nptl/sysdeps/powerpc/tls.h
index ce7f5bd53d..ad5698c6f8 100644
--- a/nptl/sysdeps/powerpc/tls.h
+++ b/nptl/sysdeps/powerpc/tls.h
@@ -1,5 +1,5 @@
/* Definition for thread-local data handling. NPTL/PowerPC version.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2005, 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -23,6 +23,7 @@
# include <dl-sysdep.h>
#ifndef __ASSEMBLER__
+# include <stdbool.h>
# include <stddef.h>
# include <stdint.h>
@@ -30,7 +31,11 @@
typedef union dtv
{
size_t counter;
- void *pointer;
+ struct
+ {
+ void *val;
+ bool is_static;
+ } pointer;
} dtv_t;
#else /* __ASSEMBLER__ */
@@ -60,11 +65,13 @@ typedef union dtv
/* Get the thread descriptor definition. */
# include <nptl/descr.h>
-/* This layout is actually wholly private and not affected by the ABI.
- Nor does it overlap the pthread data structure, so we need nothing
- extra here at all. */
+/* The stack_guard is accessed directly by GCC -fstack-protector code,
+ so it is a part of public ABI. The dtv and pointer_guard fields
+ are private. */
typedef struct
{
+ uintptr_t pointer_guard;
+ uintptr_t stack_guard;
dtv_t *dtv;
} tcbhead_t;
@@ -122,7 +129,7 @@ register void *__thread_register __asm__ ("r13");
/* Return the address of the dtv for the current thread. */
# define THREAD_DTV() \
- (((tcbhead_t *) (__thread_register - TLS_TCB_OFFSET))[-1].dtv)
+ (((tcbhead_t *) (__thread_register - TLS_TCB_OFFSET))[-1].dtv)
/* Return the thread descriptor for the current thread. */
# define THREAD_SELF \
@@ -131,9 +138,9 @@ register void *__thread_register __asm__ ("r13");
/* Magic for libthread_db to know how to do THREAD_SELF. */
# define DB_THREAD_SELF \
- REGISTER (32, 32, PT_THREAD_POINTER * 4, \
+ REGISTER (32, 32, PT_THREAD_POINTER * 4, \
- TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE) \
- REGISTER (64, 64, PT_THREAD_POINTER * 8, \
+ REGISTER (64, 64, PT_THREAD_POINTER * 8, \
- TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
/* Read member of the thread descriptor directly. */
@@ -151,10 +158,54 @@ register void *__thread_register __asm__ ("r13");
# define THREAD_SETMEM_NC(descr, member, idx, value) \
((void)(descr), (THREAD_SELF)->member[idx] = (value))
+/* Set the stack guard field in TCB head. */
+# define THREAD_SET_STACK_GUARD(value) \
+ (((tcbhead_t *) ((char *) __thread_register \
+ - TLS_TCB_OFFSET))[-1].stack_guard = (value))
+# define THREAD_COPY_STACK_GUARD(descr) \
+ (((tcbhead_t *) ((char *) (descr) \
+ + TLS_PRE_TCB_SIZE))[-1].stack_guard \
+ = ((tcbhead_t *) ((char *) __thread_register \
+ - TLS_TCB_OFFSET))[-1].stack_guard)
+
+/* Set the stack guard field in TCB head. */
+# define THREAD_GET_POINTER_GUARD() \
+ (((tcbhead_t *) ((char *) __thread_register \
+ - TLS_TCB_OFFSET))[-1].pointer_guard)
+# define THREAD_SET_POINTER_GUARD(value) \
+ (THREAD_GET_POINTER_GUARD () = (value))
+# define THREAD_COPY_POINTER_GUARD(descr) \
+ (((tcbhead_t *) ((char *) (descr) \
+ + TLS_PRE_TCB_SIZE))[-1].pointer_guard \
+ = THREAD_GET_POINTER_GUARD())
+
/* l_tls_offset == 0 is perfectly valid on PPC, so we have to use some
different value to mean unset l_tls_offset. */
# define NO_TLS_OFFSET -1
+/* Get and set the global scope generation counter in struct pthread. */
+#define THREAD_GSCOPE_FLAG_UNUSED 0
+#define THREAD_GSCOPE_FLAG_USED 1
+#define THREAD_GSCOPE_FLAG_WAIT 2
+#define THREAD_GSCOPE_RESET_FLAG() \
+ do \
+ { int __res \
+ = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
+ THREAD_GSCOPE_FLAG_UNUSED); \
+ if (__res == THREAD_GSCOPE_FLAG_WAIT) \
+ lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1); \
+ } \
+ while (0)
+#define THREAD_GSCOPE_SET_FLAG() \
+ do \
+ { \
+ THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
+ atomic_write_barrier (); \
+ } \
+ while (0)
+#define THREAD_GSCOPE_WAIT() \
+ GL(dl_wait_lookup_done) ()
+
#endif /* __ASSEMBLER__ */
#endif /* tls.h */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 00:11:06 +0000