* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_runtime_setup):

Handle prelinked libraries and binaries with new style PLT. 2005-06-07 Jakub Jelinek <jakub@redhat.com> * elf/elf.h (R_PPC_REL16, R_PPC_REL16_LO, R_PPC_REL16_HI, R_PPC_REL16_HA): Define. 2005-06-14 Alan Modra <amodra@bigpond.net.au> * config.h.in (HAVE_ASM_PPC_REL16): Add. * elf/elf.h (DT_PPC_GOT, DT_PPC_NUM): Define. * elf/tls-macros.h (PowerPC32): Include config.h. Add variants of TLS_IE, TLS_LD and TLS_GD for new PLT/GOT layout. * sysdeps/powerpc/powerpc32/configure.in: New file, * sysdeps/powerpc/powerpc32/dl-dtprocnum.h: New file. * sysdeps/powerpc/powerpc32/dl-machine.h (DT_PPC): Define. (ppc_got): New inline function. (elf_machine_dynamic): Use ppc_got. Add attribute const. (elf_machine_load_address): Add attribute const. Don't use int vars. Use bcl rather than bl to save trashing branch target stack. Use elf_machine_dynamic rather than duplicating code here. (elf_machine_runtime_setup): New inline function replacing define. Handle new PLT. (elf_machine_fixup_plt): Handle new PLT. (elf_machine_rela): Likewise. * sysdeps/powerpc/powerpc32/sysdep.h: Include config.h. (CALL_MCOUNT): Don't set up counter vars. * sysdeps/powerpc/powerpc32/ppc-mcount.S: Correct comment. * sysdeps/powerpc/powerpc32/elf/start.S (start_addressesp): Don't define when HAVE_ASM_PPC_REL16. (_start): Add HAVE_ASM_PPC_REL16 code. * sysdeps/powerpc/powerpc32/dl-start.S (_dl_start_user): Don't bl into the GOT when HAVE_ASM_PPC_REL16. * sysdeps/powerpc/powerpc32/memset.S (memset): Likewise. * sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S (__longjmp): Ditto. * sysdeps/powerpc/powerpc32/fpu/s_ceil.S (__ceil): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_ceilf.S (__ceilf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_floor.S (__floor): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_floorf.S (__floorf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_lround.S (__lround): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_rint.S (__rint): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_rintf.S (__rintf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_round.S (__round): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_roundf.S (__roundf): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_trunc.S (__trunc): Likewise. * sysdeps/powerpc/powerpc32/fpu/s_truncf.S (__truncf): Likewise. * sysdeps/powerpc/powerpc32/fpu/setjmp-common.S (__sigsetjmp): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/brk.S (__brk): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S (__getcontext): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S (__setcontext): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S (__swapcontext): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/socket.S (stackblock): Comment. (__socket): Bomb if NARGS >= 7. Invoke CGOTSETUP and CGOTRESTORE. 2005-06-17 Ulrich Drepper <drepper@redhat.com> * sysdeps/posix/sigignore.c: Include <string.h> to tell the compiler to use __GI_memset. * sysdeps/posix/signal.c: Likewise. * sysdeps/posix/sigset.c: Likewise. * sysdeps/posix/sysv_signal.c: Likewise. * sysdeps/unix/sysv/linux/sleep.c: Likewise. * sysdeps/unix/sysv/linux/sysctl.c: Likewise. * sysdeps/unix/sysv/linux/system.c: Likewise.
git-mirror · Jun 17, 2005 · 99c7f87 · 99c7f87
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diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,76 @@
+2005-06-10  Jakub Jelinek  <jakub@redhat.com>
+
+	* sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_runtime_setup):
+	Handle prelinked libraries and binaries with new style PLT.
+
+2005-06-07  Jakub Jelinek  <jakub@redhat.com>
+
+	* elf/elf.h (R_PPC_REL16, R_PPC_REL16_LO, R_PPC_REL16_HI,
+	R_PPC_REL16_HA): Define.
+
+2005-06-14  Alan Modra  <amodra@bigpond.net.au>
+
+	* config.h.in (HAVE_ASM_PPC_REL16): Add.
+	* elf/elf.h (DT_PPC_GOT, DT_PPC_NUM): Define.
+	* elf/tls-macros.h (PowerPC32): Include config.h.  Add variants of
+	TLS_IE, TLS_LD and TLS_GD for new PLT/GOT layout.
+	* sysdeps/powerpc/powerpc32/configure.in: New file,
+	* sysdeps/powerpc/powerpc32/dl-dtprocnum.h: New file.
+	* sysdeps/powerpc/powerpc32/dl-machine.h (DT_PPC): Define.
+	(ppc_got): New inline function.
+	(elf_machine_dynamic): Use ppc_got.  Add attribute const.
+	(elf_machine_load_address): Add attribute const.  Don't use int vars.
+	Use bcl rather than bl to save trashing branch target stack.  Use
+	elf_machine_dynamic rather than duplicating code here.
+	(elf_machine_runtime_setup): New inline function replacing define.
+	Handle new PLT.
+	(elf_machine_fixup_plt): Handle new PLT.
+	(elf_machine_rela): Likewise.
+	* sysdeps/powerpc/powerpc32/sysdep.h: Include config.h.
+	(CALL_MCOUNT): Don't set up counter vars.
+	* sysdeps/powerpc/powerpc32/ppc-mcount.S: Correct comment.
+	* sysdeps/powerpc/powerpc32/elf/start.S (start_addressesp): Don't
+	define when HAVE_ASM_PPC_REL16.
+	(_start): Add HAVE_ASM_PPC_REL16 code.
+	* sysdeps/powerpc/powerpc32/dl-start.S (_dl_start_user): Don't bl
+	into the GOT when HAVE_ASM_PPC_REL16.
+	* sysdeps/powerpc/powerpc32/memset.S (memset): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S (__longjmp): Ditto.
+	* sysdeps/powerpc/powerpc32/fpu/s_ceil.S (__ceil): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_ceilf.S (__ceilf): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_floor.S (__floor): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_floorf.S (__floorf): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_lround.S (__lround): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_rint.S (__rint): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_rintf.S (__rintf): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_round.S (__round): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_roundf.S (__roundf): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_trunc.S (__trunc): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/s_truncf.S (__truncf): Likewise.
+	* sysdeps/powerpc/powerpc32/fpu/setjmp-common.S (__sigsetjmp):
+	Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/brk.S (__brk): Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S
+	(__getcontext): Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S
+	(__setcontext): Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S
+	(__swapcontext): Likewise.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/socket.S (stackblock):
+	Comment.
+	(__socket): Bomb if NARGS >= 7.  Invoke CGOTSETUP and CGOTRESTORE.
+
+2005-06-17  Ulrich Drepper  <drepper@redhat.com>
+
+	* sysdeps/posix/sigignore.c: Include <string.h> to tell the compiler
+	to use __GI_memset.
+	* sysdeps/posix/signal.c: Likewise.
+	* sysdeps/posix/sigset.c: Likewise.
+	* sysdeps/posix/sysv_signal.c: Likewise.
+	* sysdeps/unix/sysv/linux/sleep.c: Likewise.
+	* sysdeps/unix/sysv/linux/sysctl.c: Likewise.
+	* sysdeps/unix/sysv/linux/system.c: Likewise.
+
 2005-06-15  Jakub Jelinek  <jakub@redhat.com>
 
 	* hesiod/hesiod.c (hesiod_init): Don't check for ctx->classes[0] == 0

diff --git a/config.h.in b/config.h.in
@@ -220,6 +220,9 @@
 /* Define if inlined system calls are available.  */
 #undef HAVE_INLINED_SYSCALLS
 
+/* Define if your assembler and linker support R_PPC_REL16* relocs.  */
+#undef HAVE_ASM_PPC_REL16
+
 /*
  */
 

diff --git a/elf/elf.h b/elf/elf.h
@@ -1979,10 +1979,19 @@ typedef Elf32_Addr Elf32_Conflict;
 #define R_PPC_DIAB_RELSDA_HI	184	/* like EMB_RELSDA, but high 16 bit */
 #define R_PPC_DIAB_RELSDA_HA	185	/* like EMB_RELSDA, adjusted high 16 */
 
+/* GNU relocs used in PIC code sequences.  */
+#define R_PPC_REL16		249	/* word32   (sym-.) */
+#define R_PPC_REL16_LO		250	/* half16   (sym-.)@l */
+#define R_PPC_REL16_HI		251	/* half16   (sym-.)@h */
+#define R_PPC_REL16_HA		252	/* half16   (sym-.)@ha */
+
 /* This is a phony reloc to handle any old fashioned TOC16 references
    that may still be in object files.  */
 #define R_PPC_TOC16		255
 
+/* PowerPC specific values for the Dyn d_tag field.  */
+#define DT_PPC_GOT		(DT_LOPROC + 0)
+#define DT_PPC_NUM		1
 
 /* PowerPC64 relocations defined by the ABIs */
 #define R_PPC64_NONE		R_PPC_NONE

diff --git a/elf/tls-macros.h b/elf/tls-macros.h
@@ -703,6 +703,8 @@ register void *__gp __asm__("$29");
 
 #elif defined __powerpc__ && !defined __powerpc64__
 
+#include "config.h"
+
 # define __TLS_CALL_CLOBBERS						\
 	"0", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12",	\
 	"lr", "ctr", "cr0", "cr1", "cr5", "cr6", "cr7"
@@ -715,7 +717,20 @@ register void *__gp __asm__("$29");
      __result; })
 
 /* PowerPC32 Initial Exec TLS access.  */
-# define TLS_IE(x)					\
+# ifdef HAVE_ASM_PPC_REL16
+#  define TLS_IE(x)					\
+  ({ int *__result;					\
+     asm ("bcl 20,31,1f\n1:\t"				\
+	  "mflr %0\n\t"					\
+	  "addis %0,%0,_GLOBAL_OFFSET_TABLE_-1b@ha\n\t"	\
+	  "addi %0,%0,_GLOBAL_OFFSET_TABLE_-1b@l\n\t"	\
+	  "lwz %0," #x "@got@tprel(%0)\n\t"		\
+	  "add %0,%0," #x "@tls"			\
+	  : "=b" (__result) :				\
+	  : "lr");					\
+     __result; })
+# else
+#  define TLS_IE(x)					\
   ({ int *__result;					\
      asm ("bl _GLOBAL_OFFSET_TABLE_@local-4\n\t"	\
 	  "mflr %0\n\t"					\
@@ -724,9 +739,24 @@ register void *__gp __asm__("$29");
 	  : "=b" (__result) :				\
 	  : "lr");					\
      __result; })
+# endif
 
 /* PowerPC32 Local Dynamic TLS access.  */
-# define TLS_LD(x)					\
+# ifdef HAVE_ASM_PPC_REL16
+#  define TLS_LD(x)					\
+  ({ int *__result;					\
+     asm ("bcl 20,31,1f\n1:\t"				\
+	  "mflr 3\n\t"					\
+	  "addis 3,3,_GLOBAL_OFFSET_TABLE_-1b@ha\n\t"	\
+	  "addi 3,3,_GLOBAL_OFFSET_TABLE_-1b@l\n\t"	\
+	  "addi 3,3," #x "@got@tlsld\n\t"		\
+	  "bl __tls_get_addr@plt\n\t"			\
+	  "addi %0,3," #x "@dtprel"			\
+	  : "=r" (__result) :				\
+	  : __TLS_CALL_CLOBBERS);			\
+     __result; })
+# else
+#  define TLS_LD(x)					\
   ({ int *__result;					\
      asm ("bl _GLOBAL_OFFSET_TABLE_@local-4\n\t"	\
 	  "mflr 3\n\t"					\
@@ -736,9 +766,23 @@ register void *__gp __asm__("$29");
 	  : "=r" (__result) :				\
 	  : __TLS_CALL_CLOBBERS);			\
      __result; })
+# endif
 
 /* PowerPC32 General Dynamic TLS access.  */
-# define TLS_GD(x)					\
+# ifdef HAVE_ASM_PPC_REL16
+#  define TLS_GD(x)					\
+  ({ register int *__result __asm__ ("r3");		\
+     asm ("bcl 20,31,1f\n1:\t"				\
+	  "mflr 3\n\t"					\
+	  "addis 3,3,_GLOBAL_OFFSET_TABLE_-1b@ha\n\t"	\
+	  "addi 3,3,_GLOBAL_OFFSET_TABLE_-1b@l\n\t"	\
+	  "addi 3,3," #x "@got@tlsgd\n\t"		\
+	  "bl __tls_get_addr@plt"			\
+	  : :						\
+	  : __TLS_CALL_CLOBBERS);			\
+     __result; })
+# else
+#  define TLS_GD(x)					\
   ({ register int *__result __asm__ ("r3");		\
      asm ("bl _GLOBAL_OFFSET_TABLE_@local-4\n\t"	\
 	  "mflr 3\n\t"					\
@@ -747,6 +791,7 @@ register void *__gp __asm__("$29");
 	  : :						\
 	  : __TLS_CALL_CLOBBERS);			\
      __result; })
+# endif
 
 #elif defined __powerpc__ && defined __powerpc64__
 

diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
@@ -1,3 +1,12 @@
+2005-06-14  Alan Modra  <amodra@bigpond.net.au>
+
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h (PSEUDO):
+	Invoke CGOTSETUP and CGOTRESTORE.
+	(CGOTSETUP, CGOTRESTORE): Define.
+	(SINGLE_THREAD_P): Add variant for new PLT/GOT layout.
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S (__vfork): Avoid
+	bl into the GOT when HAVE_ASM_PPC_REL16.
+
 2005-05-23  Roland McGrath  <roland@redhat.com>
 
 	* sysdeps/arm, sysdeps/unix/sysv/linux/arm: Subdirectories moved to

diff --git a/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h b/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
@@ -37,6 +37,7 @@
     stwu 1,-48(1);							\
     mflr 9;								\
     stw 9,52(1);							\
+    CGOTSETUP;								\
     DOCARGS_##args;	/* save syscall args around CENABLE.  */	\
     CENABLE;								\
     stw 3,16(1);	/* store CENABLE return value (MASK).  */	\
@@ -50,6 +51,7 @@
     lwz 4,52(1);							\
     lwz 0,12(1);	/* restore CR/R3. */				\
     lwz 3,8(1);								\
+    CGOTRESTORE;							\
     mtlr 4;								\
     mtcr 0;								\
     addi 1,1,48;
@@ -75,6 +77,9 @@
 # define DOCARGS_6	stw 8,40(1); DOCARGS_5
 # define UNDOCARGS_6	lwz 8,40(1); UNDOCARGS_5
 
+# define CGOTSETUP
+# define CGOTRESTORE
+
 # ifdef IS_IN_libpthread
 #  define CENABLE	bl __pthread_enable_asynccancel@local
 #  define CDISABLE	bl __pthread_disable_asynccancel@local
@@ -84,6 +89,18 @@
 # else
 #  define CENABLE	bl JUMPTARGET(__librt_enable_asynccancel)
 #  define CDISABLE	bl JUMPTARGET(__librt_disable_asynccancel)
+#  if defined HAVE_AS_REL16 && defined PIC
+#   undef CGOTSETUP
+#   define CGOTSETUP							\
+    bcl 20,31,1f;							\
+ 1: stw 30,44(1);							\
+    mflr 30;								\
+    addis 30,30,_GLOBAL_OFFSET_TABLE-1b@ha;				\
+    addi 30,30,_GLOBAL_OFFSET_TABLE-1b@l
+#   undef CGOTRESTORE
+#   define CGOTRESTORE							\
+    lwz 30,44(1)
+#  endif
 # endif
 
 # ifdef HAVE_TLS_SUPPORT
@@ -111,14 +128,25 @@ extern int __local_multiple_threads attribute_hidden;
   lwz 10,__local_multiple_threads@l(10);				\
   cmpwi 10,0
 #   else
-#    define SINGLE_THREAD_P						\
+#    ifdef HAVE_ASM_PPC_REL16
+#     define SINGLE_THREAD_P						\
+  mflr 9;								\
+  bcl 20,31,1f;								\
+1:mflr 10;								\
+  addis 10,10,__local_multiple_threads-1b@ha;				\
+  lwz 10,__local_multiple_threads-1b@l(10);				\
+  mtlr 9;								\
+  cmpwi 10,0
+#    else
+#     define SINGLE_THREAD_P						\
   mflr 9;								\
   bl _GLOBAL_OFFSET_TABLE_@local-4;					\
   mflr 10;								\
   mtlr 9;								\
   lwz 10,__local_multiple_threads@got(10);				\
   lwz 10,0(10);								\
   cmpwi 10,0
+#    endif
 #   endif
 #  endif
 # endif

diff --git a/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S b/linuxthreads/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
@@ -31,11 +31,19 @@ ENTRY (__vfork)
 #ifdef __NR_vfork
 # ifdef SHARED
 	mflr	9
+#  ifdef HAVE_ASM_PPC_REL16
+	bcl	20,31,1f
+1:	mflr	10
+	addis	10,10,__libc_pthread_functions-1b@ha
+	lwz	10,__libc_pthread_functions-1b@l(10)
+	mtlr	9
+#  else
 	bl	_GLOBAL_OFFSET_TABLE_@local-4
 	mflr	10
 	mtlr	9
 	lwz	10,__libc_pthread_functions@got(10)
 	lwz	10,0(10)
+#  endif
 # else
 	.weak	pthread_create
 	lis	10,pthread_create@ha

diff --git a/nptl/ChangeLog b/nptl/ChangeLog
@@ -1,3 +1,9 @@
+2005-06-14  Alan Modra  <amodra@bigpond.net.au>
+
+	* sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h (PSEUDO):
+	Invoke CGOTSETUP and CGOTRESTORE.
+	(CGOTSETUP, CGOTRESTORE): Define.
+
 2005-05-29  Richard Henderson  <rth@redhat.com>
 
 	* tst-cancel4.c (WRITE_BUFFER_SIZE): New.

diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h b/nptl/sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep-cancel.h
@@ -45,6 +45,7 @@
     mflr 9;								\
     stw 9,52(1);							\
     cfi_offset (lr, 4);							\
+    CGOTSETUP;								\
     DOCARGS_##args;	/* save syscall args around CENABLE.  */	\
     CENABLE;								\
     stw 3,16(1);	/* store CENABLE return value (MASK).  */	\
@@ -58,6 +59,7 @@
     lwz 4,52(1);							\
     lwz 0,12(1);	/* restore CR/R3. */				\
     lwz 3,8(1);								\
+    CGOTRESTORE;							\
     mtlr 4;								\
     mtcr 0;								\
     addi 1,1,48;							\
@@ -84,6 +86,9 @@
 # define DOCARGS_6	stw 8,40(1); DOCARGS_5
 # define UNDOCARGS_6	lwz 8,40(1); UNDOCARGS_5
 
+# define CGOTSETUP
+# define CGOTRESTORE
+
 # ifdef IS_IN_libpthread
 #  define CENABLE	bl __pthread_enable_asynccancel@local
 #  define CDISABLE	bl __pthread_disable_asynccancel@local
@@ -93,6 +98,18 @@
 # elif defined IS_IN_librt
 #  define CENABLE	bl JUMPTARGET(__librt_enable_asynccancel)
 #  define CDISABLE	bl JUMPTARGET(__librt_disable_asynccancel)
+#  if defined HAVE_AS_REL16 && defined PIC
+#   undef CGOTSETUP
+#   define CGOTSETUP							\
+    bcl 20,31,1f;							\
+ 1: stw 30,44(1);							\
+    mflr 30;								\
+    addis 30,30,_GLOBAL_OFFSET_TABLE-1b@ha;				\
+    addi 30,30,_GLOBAL_OFFSET_TABLE-1b@l
+#   undef CGOTRESTORE
+#   define CGOTRESTORE							\
+    lwz 30,44(1)
+#  endif
 # else
 #  error Unsupported library
 # endif

diff --git a/sysdeps/posix/sigignore.c b/sysdeps/posix/sigignore.c
@@ -1,5 +1,5 @@
 /* Set the disposition of SIG to SIG_IGN.
-   Copyright (C) 1998 Free Software Foundation, Inc.
+   Copyright (C) 1998, 2005 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
@@ -22,6 +22,8 @@
 #define __need_NULL
 #include <stddef.h>
 #include <signal.h>
+#include <string.h>	/* For the real memset prototype.  */
+
 
 int
 sigignore (sig)

diff --git a/sysdeps/posix/signal.c b/sysdeps/posix/signal.c
@@ -1,5 +1,6 @@
 /* BSD-like signal function.
-   Copyright (C) 1991,1992,1996,1997,2000,2002 Free Software Foundation, Inc.
+   Copyright (C) 1991,1992,1996,1997,2000,2002,2005
+   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
@@ -19,6 +20,7 @@
 
 #include <errno.h>
 #include <signal.h>
+#include <string.h>	/* For the real memset prototype.  */
 
 
 sigset_t _sigintr attribute_hidden;		/* Set by siginterrupt.  */