Update.

2004-01-14  Steven Munroe  <sjmunroe@us.ibm.com>

	* include/libc-symbols.h [HAVE_ASM_GLOBAL_DOT_NAME]
	(_symbol_version): Use C_SYMBOL_DOT_NAME to create '.'ed symbols.
	(_default_symbol_version): Use C_SYMBOL_DOT_NAME to create '.'ed
	symbols.
	* sysdeps/powerpc/Makefile: Add rtld-global-offsets.sym to
	gen-as-const-headers.
	* sysdeps/powerpc/elf/rtld-global-offsets.sym: New file.
	* sysdeps/powerpc/sysdep.h: Define v# symbols for vector registers.
	Define PPC_FEATURE_* masks for Aux Vector AT_HWCAP.
	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_SWAPCONTEXT_SYSCALL): Define for PPC and 2.6.0 kernels.
	* sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h [!__WORDSIZE == 32]:
	Declare mcontext_t inline and include altivec state for 64-bit.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions: Add GLIBC_2.3.4
	versions for setcontext, getcontext, and swapcontext.

	* sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions: Add GLIBC_2.3.4
	versions for setcontext, getcontext, swapcontext, and makecontext.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S
	(__getcontext):  Upgrade to save Altivec regs and version GLIBC_2_3_4.
	[SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)](__novec_getcontext):
	Compatible with GLIBC_2.3.3 release.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S
	(__makecontext): Use parm save area instead of compiler_dw to hold
	context pointer.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
	(__setcontext):  Upgrade to restore Altivec regs and version
	GLIBC_2_3_4.
	[SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)](__novec_setcontext):
	Compatible with GLIBC_2.3.3 release.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
	(__swapcontext): Upgrade to swap Altivec regs and version GLIBC_2_3_4.
	[SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)](__novec_swapcontext):
	Compatible with GLIBC_2.3.3 release.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/ucontext_i.h
	(SIGCONTEXT_V_REGS_PTR, SIGCONTEXT_V_RESERVE): Defined.


2004-01-12  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/unix/sysv/linux/powerpc/powerpc32/Versions: Add GLIBC_2.3.4
	versions for setcontext, getcontext, swapcontext, and makecontext.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S
	(__getcontext):  Upgrade to save Altivec regs and version GLIBC_2_3_4.
	[SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)](__novec_getcontext):
	Compatible with GLIBC_2.3.3 release.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S
	(__makecontext): Upgrade to align for Altivec regs and version
	GLIBC_2_3_4.
	[SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)](__novec_makecontext):
	Compatible with GLIBC_2.3.3 release.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S
	(__setcontext):  Upgrade to restore Altivec regs and version
	GLIBC_2_3_4.
	[SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)](__novec_setcontext):
	Compatible with GLIBC_2.3.3 release.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S
	(__swapcontext): Upgrade to swap Altivec regs and version GLIBC_2_3_4.
	[SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)]
	(__novec_swapcontext): Compatible with GLIBC_2.3.3 release.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/ucontext_i.h:
	(_UC_VSCR, _UC_VRSAVE): Define.
	(_FRAME_BACKCHAIN, _FRAME_LR_SAVE,_FRAME_PARM_SAVE1,_FRAME_PARM_SAVE2,
	_FRAME_PARM_SAVE3, _FRAME_PARM_SAVE4): Defined.

1 files changed, 257 insertions, 3 deletions

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S
index 0ebf2d8727..279a36d68d 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S
@@ -1,5 +1,5 @@
 /* Save current context.
-   Copyright (C) 2002 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004 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
@@ -18,6 +18,8 @@
    02111-1307 USA.  */
 
 #include <sysdep.h>
+#include <rtld-global-offsets.h>
+#include <shlib-compat.h>
 #include "kernel-features.h"
 
 #define __ASSEMBLY__
@@ -25,7 +27,9 @@
 #include <asm/errno.h>
 #include "ucontext_i.h"
 
-ENTRY(__getcontext)
+
+#if SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)
+ENTRY(__novec_getcontext)
 #ifdef __ASSUME_NEW_RT_SIGRETURN_SYSCALL
   std  r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3)
   std  r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3)
@@ -146,6 +150,256 @@ ENTRY(__getcontext)
   addi  r1,r1,128
   mtlr  r0
   blr
+PSEUDO_END(__novec_getcontext)
+
+compat_symbol (libc, __novec_getcontext, getcontext, GLIBC_2_3)
+
+#endif
+
+	.section	".toc","aw"
+.LC__dl_hwcap:
+#ifdef SHARED
+	.tc _rtld_global[TC],_rtld_global
+#else
+	.tc _dl_hwcap[TC],_dl_hwcap
+#endif	
+	.section ".text"
+
+ENTRY(__getcontext)
+#ifdef __ASSUME_NEW_RT_SIGRETURN_SYSCALL
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3)
+  std  r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3)
+  mflr  r0
+  std  r2,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r3)
+  std  r0,FRAME_LR_SAVE(r1)
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r3)
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r3)
+  stdu  r1,-128(r1)
+  std  r4,(SIGCONTEXT_GP_REGS+(PT_R4*8))(r3)
+  std  r5,(SIGCONTEXT_GP_REGS+(PT_R5*8))(r3)
+  std  r6,(SIGCONTEXT_GP_REGS+(PT_R6*8))(r3)
+  std  r7,(SIGCONTEXT_GP_REGS+(PT_R7*8))(r3)
+  std  r8,(SIGCONTEXT_GP_REGS+(PT_R8*8))(r3)
+  std  r9,(SIGCONTEXT_GP_REGS+(PT_R9*8))(r3)
+  std  r10,(SIGCONTEXT_GP_REGS+(PT_R10*8))(r3)
+  std  r11,(SIGCONTEXT_GP_REGS+(PT_R11*8))(r3)
+  std  r12,(SIGCONTEXT_GP_REGS+(PT_R12*8))(r3)
+  std  r13,(SIGCONTEXT_GP_REGS+(PT_R13*8))(r3)
+  std  r14,(SIGCONTEXT_GP_REGS+(PT_R14*8))(r3)
+  std  r15,(SIGCONTEXT_GP_REGS+(PT_R15*8))(r3)
+  std  r16,(SIGCONTEXT_GP_REGS+(PT_R16*8))(r3)
+  std  r17,(SIGCONTEXT_GP_REGS+(PT_R17*8))(r3)
+  std  r18,(SIGCONTEXT_GP_REGS+(PT_R18*8))(r3)
+  std  r19,(SIGCONTEXT_GP_REGS+(PT_R19*8))(r3)
+  std  r20,(SIGCONTEXT_GP_REGS+(PT_R20*8))(r3)
+  std  r21,(SIGCONTEXT_GP_REGS+(PT_R21*8))(r3)
+  std  r22,(SIGCONTEXT_GP_REGS+(PT_R22*8))(r3)
+  std  r23,(SIGCONTEXT_GP_REGS+(PT_R23*8))(r3)
+  std  r24,(SIGCONTEXT_GP_REGS+(PT_R24*8))(r3)
+  std  r25,(SIGCONTEXT_GP_REGS+(PT_R25*8))(r3)
+  std  r26,(SIGCONTEXT_GP_REGS+(PT_R26*8))(r3)
+  std  r27,(SIGCONTEXT_GP_REGS+(PT_R27*8))(r3)
+  std  r28,(SIGCONTEXT_GP_REGS+(PT_R28*8))(r3)
+  std  r29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3)
+  std  r30,(SIGCONTEXT_GP_REGS+(PT_R30*8))(r3)
+  std  r31,(SIGCONTEXT_GP_REGS+(PT_R31*8))(r3)
+  mfctr  r0
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_CTR*8))(r3)
+  mfxer  r0
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r3)
+  mfcr  r0
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r3)
+  
+  /* Set the return value of swapcontext to "success".  R3 is the only 
+     register whose value is not preserved in the saved context.  */
+  li   r0,0
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r3)
+  
+  /* Zero fill fields that can't be set in user state or are unused.  */
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r3)
+  std  r0,(SIGCONTEXT_GP_REGS+(34*8))(r3)
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_SOFTE*8))(r3)
+  std  r0,(SIGCONTEXT_GP_REGS+(40*8))(r3)
+  std  r0,(SIGCONTEXT_GP_REGS+(41*8))(r3)
+  std  r0,(SIGCONTEXT_GP_REGS+(42*8))(r3)
+  std  r0,(SIGCONTEXT_GP_REGS+(PT_RESULT*8))(r3)
+  
+  /* Set the PT_REGS pointer to the address of sigcontext's gp_regs 
+     field.  Struct pt_regs and elf_gregset_t are the same thing.  
+     We kept the regs field for backwards compatibility with
+     libraries built before we extended sigcontext.  */
+  addi r0,r3,SIGCONTEXT_GP_REGS
+  std  r0,SIGCONTEXT_PT_REGS(r3)
+  
+  stfd  fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r3)
+  stfd  fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r3)
+  stfd  fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r3)
+  stfd  fp3,(SIGCONTEXT_FP_REGS+(PT_R3*8))(r3)
+  stfd  fp4,(SIGCONTEXT_FP_REGS+(PT_R4*8))(r3)
+  stfd  fp5,(SIGCONTEXT_FP_REGS+(PT_R5*8))(r3)
+  stfd  fp6,(SIGCONTEXT_FP_REGS+(PT_R6*8))(r3)
+  stfd  fp7,(SIGCONTEXT_FP_REGS+(PT_R7*8))(r3)
+  stfd  fp8,(SIGCONTEXT_FP_REGS+(PT_R8*8))(r3)
+  stfd  fp9,(SIGCONTEXT_FP_REGS+(PT_R9*8))(r3)
+  stfd  fp10,(SIGCONTEXT_FP_REGS+(PT_R10*8))(r3)
+  stfd  fp11,(SIGCONTEXT_FP_REGS+(PT_R11*8))(r3)
+  stfd  fp12,(SIGCONTEXT_FP_REGS+(PT_R12*8))(r3)
+  stfd  fp13,(SIGCONTEXT_FP_REGS+(PT_R13*8))(r3)
+  stfd  fp14,(SIGCONTEXT_FP_REGS+(PT_R14*8))(r3)
+  stfd  fp15,(SIGCONTEXT_FP_REGS+(PT_R15*8))(r3)
+  stfd  fp16,(SIGCONTEXT_FP_REGS+(PT_R16*8))(r3)
+  stfd  fp17,(SIGCONTEXT_FP_REGS+(PT_R17*8))(r3)
+  stfd  fp18,(SIGCONTEXT_FP_REGS+(PT_R18*8))(r3)
+  stfd  fp19,(SIGCONTEXT_FP_REGS+(PT_R19*8))(r3)
+  stfd  fp20,(SIGCONTEXT_FP_REGS+(PT_R20*8))(r3)
+  stfd  fp21,(SIGCONTEXT_FP_REGS+(PT_R21*8))(r3)
+  stfd  fp22,(SIGCONTEXT_FP_REGS+(PT_R22*8))(r3)
+  stfd  fp23,(SIGCONTEXT_FP_REGS+(PT_R23*8))(r3)
+  stfd  fp24,(SIGCONTEXT_FP_REGS+(PT_R24*8))(r3)
+  stfd  fp25,(SIGCONTEXT_FP_REGS+(PT_R25*8))(r3)
+  stfd  fp26,(SIGCONTEXT_FP_REGS+(PT_R26*8))(r3)
+  stfd  fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r3)
+  stfd  fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r3)
+  stfd  fp29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3)
+  mffs  fp0
+  stfd  fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r3)
+  stfd  fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r3)
+  stfd  fp0,(SIGCONTEXT_FP_REGS+(32*8))(r3)
+  
+  ld    r5,.LC__dl_hwcap@toc(r2)
+  li    r10,0
+#ifdef SHARED  
+/* Load _rtld-global._dl_hwcap.  */
+  ld    r5,RTLD_GLOBAL_DL_HWCAP_OFFSET(r5) 
+#else  
+  ld    r5,0(r5) /* Load extern _dl_hwcap.  */
+#endif
+  andis.  r5,r5,(PPC_FEATURE_HAS_ALTIVEC >> 16)
+  beq   L(has_no_vec)
+  
+  la    r10,(SIGCONTEXT_V_RESERVE+8)(r3)
+  la    r9,(SIGCONTEXT_V_RESERVE+24)(r3)
+  clrrdi  r10,r10,4
+  clrrdi  r9,r9,4
+  
+  stvx  v0,0,r10  
+  stvx  v1,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v2,0,r10  
+  stvx  v3,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v4,0,r10  
+  stvx  v5,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v6,0,r10  
+  stvx  v7,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v8,0,r10  
+  stvx  v9,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v10,0,r10  
+  stvx  v11,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v12,0,r10  
+  stvx  v13,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v14,0,r10  
+  stvx  v15,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v16,0,r10  
+  stvx  v17,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v18,0,r10  
+  stvx  v11,0,r9
+  addi  r19,r10,32
+  addi  r9,r9,32
+  
+  stvx  v20,0,r10  
+  stvx  v21,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v22,0,r10  
+  stvx  v23,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v24,0,r10  
+  stvx  v25,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v26,0,r10  
+  stvx  v27,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v28,0,r10  
+  stvx  v29,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v30,0,r10  
+  stvx  v31,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  stvx  v10,0,r10  
+  stvx  v11,0,r9
+  addi  r10,r10,32
+  addi  r9,r9,32
+  
+  mfvscr  v0
+  mfspr r0,VRSAVE
+  stvx  v0,0,r10
+  stw   r0,0(9)
+  
+L(has_no_vec):
+/* 
+   Store either a NULL or a quadword aligned pointer to the Vector register
+   array into *v_regs.
+*/
+  std   r10,(SIGCONTEXT_V_REGS_PTR)(r3)
+  
+  addi  r5,r3,UCONTEXT_SIGMASK
+  li  r4,0
+  li  r3,SIG_BLOCK
+  bl  JUMPTARGET(sigprocmask)
+  nop
+#else
+  /* If the kernel is not at least 2.4.21 then generate a ENOSYS stub.  */
+  mflr r0
+  std  r0,FRAME_LR_SAVE(r1)
+  stdu r1,-128(r1)
+  li   r3,ENOSYS
+  bl   JUMPTARGET(__syscall_error)
+  nop
+  li   r3,-1
+#endif
+  
+  ld    r0,128+FRAME_LR_SAVE(r1)  
+  addi  r1,r1,128
+  mtlr  r0
+  blr
 PSEUDO_END(__getcontext)
 
-weak_alias(__getcontext, getcontext)
+versioned_symbol (libc, __getcontext, getcontext, GLIBC_2_3_4)
+