Partial ILP32 support for aarch64.

	* sysdeps/aarch64/crti.S: Add include of sysdep.h.
	(call_weak_fn): Use PTR_REG to get correct reg name in ILP32.
	* sysdeps/aarch64/dl-irel.h: Add include of sysdep.h.
	(elf_irela): Use AARCH64_R macro to get correct relocation in ILP32.
	* sysdeps/aarch64/dl-machine.h: Add include of sysdep.h.
	(elf_machine_load_address, RTLD_START, RTLD_START_1, RTLD_START,
	elf_machine_type_class, ELF_MACHINE_JMP_SLOT, elf_machine_rela,
	elf_machine_lazy_rel): Add ifdef's for ILP32 support.
	* sysdeps/aarch64/dl-tlsdesc.S (_dl_tlsdesc_return,
	_dl_tlsdesc_return_lazy, _dl_tlsdesc_dynamic,
	_dl_tlsdesc_resolve_hold): Extend pointers in ILP32, use PTR_REG
	to get correct reg name for ILP32.
	* sysdeps/aarch64/dl-trampoline.S (ip01): New Macro.
	(RELA_SIZE): New Macro.
	(_dl_runtime_resolve, _dl_runtime_profile): Use new macros and PTR_REG
	to support ILP32.
	* sysdeps/aarch64/jmpbuf-unwind.h (_JMPBUF_CFA_UNWINDS_ADJ): Add
	cast for ILP32 mode.
	* sysdeps/aarch64/memcmp.S (memcmp): Extend arg pointers for ILP32 mode.
	* sysdeps/aarch64/memcpy.S (memmove, memcpy): Ditto.
	* sysdeps/aarch64/memset.S (__memset): Ditto.
	* sysdeps/aarch64/strchr.S (strchr): Ditto.
	* sysdeps/aarch64/strchrnul.S (__strchrnul): Ditto.
	* sysdeps/aarch64/strcmp.S (strcmp): Ditto.
	* sysdeps/aarch64/strcpy.S (strcpy): Ditto.
	* sysdeps/aarch64/strlen.S (__strlen): Ditto.
	* sysdeps/aarch64/strncmp.S (strncmp): Ditto.
	* sysdeps/aarch64/strnlen.S (strnlen): Ditto.
	* sysdeps/aarch64/strrchr.S (strrchr): Ditto.
	* sysdeps/unix/sysv/linux/aarch64/clone.S: Ditto.
	* sysdeps/unix/sysv/linux/aarch64/setcontext.S (__setcontext): Ditto.
	* sysdeps/unix/sysv/linux/aarch64/swapcontext.S (__swapcontext): Ditto.
	* sysdeps/aarch64/__longjmp.S (__longjmp): Extend pointers in ILP32,
	change PTR_MANGLE call to use register numbers instead of names.
	* sysdeps/unix/sysv/linux/aarch64/getcontext.S (__getcontext): Ditto.
	* sysdeps/aarch64/setjmp.S (__sigsetjmp): Extend arg pointers for
	ILP32 mode, change PTR_MANGLE calls to use register numbers.
	* sysdeps/aarch64/start.S (_start): Ditto.
	* sysdeps/aarch64/nptl/bits/pthreadtypes.h
	(__PTHREAD_RWLOCK_INT_FLAGS_SHARED): New define.
	(__SIZEOF_PTHREAD_ATTR_T, __SIZEOF_PTHREAD_MUTEX_T,
	__SIZEOF_PTHREAD_MUTEXATTR_T, __SIZEOF_PTHREAD_COND_T,
	__SIZEOF_PTHREAD_COND_COMPAT_T, __SIZEOF_PTHREAD_CONDATTR_T,
	__SIZEOF_PTHREAD_RWLOCK_T, __SIZEOF_PTHREAD_RWLOCKATTR_T,
	__SIZEOF_PTHREAD_BARRIER_T, __SIZEOF_PTHREAD_BARRIERATTR_T):
	Make defined values dependent on __ILP32__.
	* sysdeps/aarch64/nptl/bits/semaphore.h (__SIZEOF_SEM_T): Change define.
	(sem_t): Change __align type.
	* sysdeps/aarch64/sysdep.h (AARCH64_R, PTR_REG, PTR_LOG_SIZE, DELOUSE,
	PTR_SIZE): New Macros.
	(LDST_PCREL, LDST_GLOBAL) Update to use PTR_REG.
	* sysdeps/unix/sysv/linux/aarch64/bits/fcntl.h (O_LARGEFILE):
	Set when in ILP32 mode.
	(F_GETLK64, F_SETLK64, F_SETLKW64): Only set in LP64 mode.
	* sysdeps/unix/sysv/linux/aarch64/dl-cache.h (DL_CACHE_DEFAULT_ID):
	Set elf flags for ILP32.
	(add_system_dir): Set ILP32 library directories.
	* sysdeps/unix/sysv/linux/aarch64/init-first.c
	(_libc_vdso_platform_setup): Set minimum kernel version for ILP32.
	* sysdeps/unix/sysv/linux/aarch64/ldconfig.h
	(SYSDEP_KNOWN_INTERPRETER_NAMES): Add ILP32 names.
	* sysdeps/unix/sysv/linux/aarch64/sigcontextinfo.h (GET_PC, SET_PC):
	New Macros.
	* sysdeps/unix/sysv/linux/aarch64/sysdep.h: Handle ILP32 pointers.

1 files changed, 30 insertions, 9 deletions

diff --git a/sysdeps/aarch64/sysdep.h b/sysdeps/aarch64/sysdep.h
index e0457593fc..0a7dccbdac 100644
--- a/sysdeps/aarch64/sysdep.h
+++ b/sysdeps/aarch64/sysdep.h
@@ -16,8 +16,25 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#ifndef _AARCH64_SYSDEP_H
+#define _AARCH64_SYSDEP_H
+
 #include <sysdeps/generic/sysdep.h>
 
+#ifdef __LP64__
+# define AARCH64_R(NAME)	R_AARCH64_ ## NAME
+# define PTR_REG(n)		x##n
+# define PTR_LOG_SIZE		3
+# define DELOUSE(n)
+#else
+# define AARCH64_R(NAME)	R_AARCH64_P32_ ## NAME
+# define PTR_REG(n)		w##n
+# define PTR_LOG_SIZE		2
+# define DELOUSE(n)		mov     w##n, w##n
+#endif
+
+#define PTR_SIZE	(1<<PTR_LOG_SIZE)
+
 #ifdef	__ASSEMBLER__
 
 /* Syntactic details of assembler.  */
@@ -107,16 +124,18 @@
 # define L(name)         .L##name
 #endif
 
-/* Load or store to/from a pc-relative EXPR into/from R, using T.  */
-#define LDST_PCREL(OP, R, T, EXPR)  \
-	adrp	T, EXPR;	    \
-	OP	R, [T, #:lo12:EXPR];\
+/* Load or store to/from a pc-relative EXPR into/from R, using T.
+   Note R and T are register numbers and not register names.  */
+#define LDST_PCREL(OP, R, T, EXPR)			\
+	adrp	x##T, EXPR;				\
+	OP	PTR_REG (R), [x##T, #:lo12:EXPR];	\
 
-/* Load or store to/from a got-relative EXPR into/from R, using T.  */
-#define LDST_GLOBAL(OP, R, T, EXPR)     \
-	adrp	T, :got:EXPR;		\
-	ldr	T, [T, #:got_lo12:EXPR];\
-	OP	R, [T];
+/* Load or store to/from a got-relative EXPR into/from R, using T.
+   Note R and T are register numbers and not register names.  */
+#define LDST_GLOBAL(OP, R, T,  EXPR)			\
+	adrp	x##T, :got:EXPR;			\
+	ldr	PTR_REG (T), [x##T, #:got_lo12:EXPR];	\
+	OP	PTR_REG (R), [x##T];
 
 /* Since C identifiers are not normally prefixed with an underscore
    on this system, the asm identifier `syscall_error' intrudes on the
@@ -125,3 +144,5 @@
 #define mcount		_mcount
 
 #endif	/* __ASSEMBLER__ */
+
+#endif  /* _AARCH64_SYSDEP_H */