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, 91 insertions, 3 deletions

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S b/sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S
index 9cb0b874f5..9f34357deb 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S
@@ -1,5 +1,5 @@
 /* Set up a context to call a function.
-   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
@@ -26,7 +26,8 @@
 
 ENTRY(__makecontext)
 	/* Set up the first 7 args to the function in its registers */
-	addi	r11,r3,_UC_REG_SPACE
+	addi	r11,r3,_UC_REG_SPACE+12
+	clrrwi  r11,r11,4
 	stw	r11,_UC_REGS_PTR(r3)
 	stw	r6,_UC_GREGS+(PT_R3*4)(r11)
 	stw	r7,_UC_GREGS+(PT_R4*4)(r11)
@@ -106,7 +107,94 @@ L(exitcode):
 
 END(__makecontext)
 
-versioned_symbol (libc, __makecontext, makecontext, GLIBC_2_3_3)
+versioned_symbol (libc, __makecontext, makecontext, GLIBC_2_3_4)
+
+#if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4)
+
+ENTRY(__novec_makecontext)
+	/* Set up the first 7 args to the function in its registers */
+	addi	r11,r3,_UC_REG_SPACE
+	stw	r11,_UC_REGS_PTR(r3)
+	stw	r6,_UC_GREGS+(PT_R3*4)(r11)
+	stw	r7,_UC_GREGS+(PT_R4*4)(r11)
+	stw	r8,_UC_GREGS+(PT_R5*4)(r11)
+	stw	r9,_UC_GREGS+(PT_R6*4)(r11)
+	stw	r10,_UC_GREGS+(PT_R7*4)(r11)
+	lwz	r8,8(r1)
+	lwz	r9,12(r1)
+	stw	r8,_UC_GREGS+(PT_R8*4)(r11)
+	stw	r9,_UC_GREGS+(PT_R9*4)(r11)
+
+	/* Set the NIP to the start of the function */
+	stw	r4,_UC_GREGS+(PT_NIP*4)(r11)
+
+	/* Set the function's r31 to ucp->uc_link for the exitcode below. */
+	lwz	r7,_UC_LINK(r3)
+	stw	r7,_UC_GREGS+(PT_R31*4)(r11)
+
+	/* Set the function's LR to point to the exitcode below. */
+#ifdef PIC
+	mflr	r0
+	bl	1f
+1:	mflr	r6
+	addi	r6,r6,L(novec_exitcode)-1b
+	mtlr	r0
+#else
+	lis	r6,L(novec_exitcode)@ha
+	addi	r6,r6,L(novec_exitcode)@l
+#endif
+	stw	r6,_UC_GREGS+(PT_LNK*4)(r11)
+
+	/*
+	 * Set up the stack frame for the function.
+	 * If we have more than 5 args to the function (8 args to makecontext),
+	 * there will be some arguments on the stack which have to end up
+	 * in registers.  If there are more than 8 args to the function,
+	 * we have to copy (argc - 8) args from our stack to the functions'
+	 * stack (and allow space for them in the frame).
+	 */
+	lwz	r4,_UC_STACK_SP(r3)
+	lwz	r8,_UC_STACK_SIZE(r3)
+	add	r4,r4,r8
+	rlwinm	r4,r4,0,0,27	/* round down to 16-byte boundary */
+	addi	r7,r4,-16	/* stack frame for fn's caller */
+	cmpwi	r5,8
+	blt	2f		/* less than 8 args is easy */
+	lwz	r10,16(r1)
+	stw	r10,_UC_GREGS+(PT_R10*4)(r11)
+	beq	2f		/* if exactly 8 args */
+	subi	r9,r5,3
+	subi	r5,r5,8
+	rlwinm	r9,r9,2,0,27
+	subf	r7,r9,r4
+	mtctr	r5		/* copy the 9th and following args */
+	addi	r6,r1,16
+	addi	r8,r7,4
+3:	lwzu	r10,4(r6)
+	stwu	r10,4(r8)
+	bdnz	3b
+2:	stw	r7,_UC_GREGS+(PT_R1*4)(r11)
+	li	r6,0
+	stw	r6,0(r7)
+
+	blr
+
+/*
+ * If the function returns, it comes here.  We put ucp->uc_link in
+ * r31, which is a callee-saved register.  We have to continue with
+ * the context that r31 points to, or exit if it is 0.
+ */
+L(novec_exitcode):
+	mr.	r3,r31
+	beq	4f
+	bl	JUMPTARGET(__novec_setcontext)
+4:	bl	HIDDEN_JUMPTARGET(exit)
+	b	4b
+
+END(__makecontext)
+
+compat_symbol (libc, __novec_makecontext, makecontext, GLIBC_2_3_3)
+#endif
 
 #if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3)