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authorCarlos O'Donell <carlos@systemhalted.org>2014-04-29 03:08:48 -0400
committerCarlos O'Donell <carlos@systemhalted.org>2014-04-29 04:20:39 -0400
commit5abebba403181de898bbea4ee1bcce5f088c663b (patch)
tree0c4a8eac85e1f2db87621b524bfcbdeb24c2c8f9 /sysdeps/hppa/dl-lookupcfg.h
parent4e4a58f4ee45cea6f3083af8f12d3834bb999555 (diff)
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Relocate hppa from ports to libc.
Diffstat (limited to 'sysdeps/hppa/dl-lookupcfg.h')
-rw-r--r--sysdeps/hppa/dl-lookupcfg.h82
1 files changed, 82 insertions, 0 deletions
diff --git a/sysdeps/hppa/dl-lookupcfg.h b/sysdeps/hppa/dl-lookupcfg.h
new file mode 100644
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--- /dev/null
+++ b/sysdeps/hppa/dl-lookupcfg.h
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+/* Configuration of lookup functions.
+ Copyright (C) 2000-2014 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
+ 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#define ELF_FUNCTION_PTR_IS_SPECIAL
+#define DL_UNMAP_IS_SPECIAL
+
+#include <dl-fptr.h>
+
+/* Forward declaration. */
+struct link_map;
+
+void *_dl_symbol_address (struct link_map *map, const ElfW(Sym) *ref);
+
+#define DL_SYMBOL_ADDRESS(map, ref) _dl_symbol_address(map, ref)
+
+Elf32_Addr _dl_lookup_address (const void *address);
+
+/* Clear the bottom two bits so generic code can find the fdesc entry */
+#define DL_LOOKUP_ADDRESS(addr) \
+ (_dl_lookup_address ((void *)((unsigned long)addr & ~3)))
+
+void _dl_unmap (struct link_map *map);
+
+#define DL_UNMAP(map) _dl_unmap (map)
+
+#define DL_DT_FUNCTION_ADDRESS(map, start, attr, addr) \
+ attr volatile unsigned int fptr[2]; \
+ /* The test for "start & 2" below is to accommodate old binaries which \
+ violated the ELF ABI by pointing DT_INIT and DT_FINI at a function \
+ descriptor. */ \
+ if ((ElfW(Addr)) (start) & 2) \
+ addr = (ElfW(Addr)) start; \
+ else \
+ { \
+ fptr[0] = (unsigned int) (start); \
+ fptr[1] = (map)->l_info[DT_PLTGOT]->d_un.d_ptr; \
+ /* Set bit 30 to indicate to $$dyncall that this is a PLABEL. */ \
+ addr = (ElfW(Addr))((unsigned int)fptr | 2); \
+ } \
+
+#define DL_CALL_DT_INIT(map, start, argc, argv, env) \
+{ \
+ ElfW(Addr) addr; \
+ DL_DT_FUNCTION_ADDRESS(map, start, , addr) \
+ init_t init = (init_t) addr; \
+ init (argc, argv, env); \
+}
+
+#define DL_CALL_DT_FINI(map, start) \
+{ \
+ ElfW(Addr) addr; \
+ DL_DT_FUNCTION_ADDRESS(map, start, , addr) \
+ fini_t fini = (fini_t) addr; \
+ fini (); \
+}
+
+/* The type of the return value of fixup/profile_fixup */
+#define DL_FIXUP_VALUE_TYPE struct fdesc
+
+/* Construct a fixup value from the address and linkmap */
+#define DL_FIXUP_MAKE_VALUE(map, addr) \
+ ((struct fdesc) { (addr), (map)->l_info[DT_PLTGOT]->d_un.d_ptr })
+
+/* Extract the code address from a fixup value */
+#define DL_FIXUP_VALUE_CODE_ADDR(value) ((value).ip)
+#define DL_FIXUP_VALUE_ADDR(value) ((uintptr_t) &(value))
+#define DL_FIXUP_ADDR_VALUE(addr) (*(struct fdesc *) (addr))