Update.

2004-02-13  Steven Munroe  <sjmunroe@us.ibm.com>

	* sysdeps/powerpc/powerpc64/__longjmp-common.S: New file.
	* sysdeps/powerpc/powerpc64/__longjmp.S [NOT_IN_libc](__longjmp):
	Non-versioned __longjmp for rtld-__longjmp.
	[!NOT_IN_libc](__vmx__longjmp): Add VMX reg support and define as
	default version of __longjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)]
	(__novmx__longjmp): Original version of __longjmp.
	* sysdeps/powerpc/powerpc64/bsd-_setjmp.S [NOT_IN_libc](_setjmp):
	Non-versioned _setjmp for rtld-_setjmp.
	[!NOT_IN_libc](__vmx_setjmp): Branch to __vmx__sigsetjmp and define
	as default version of _setjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)]
	(__novmx_setjmp): Original version of _setjmp.
	* sysdeps/powerpc/powerpc64/bsd-setjmp.S (__vmxsetjmp): Branch to
	__vmx__sigsetjmp and define as default version of setjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)]
	(__novmxsetjmp): Original version of setjmp.
	* sysdeps/powerpc/powerpc64/setjmp-common.S: New file.
	* sysdeps/powerpc/powerpc64/setjmp.S [NOT_IN_libc](__setjmp):
	Non-versioned __sigsetjmp for rtld-setjmp.
	[!NOT_IN_libc](__vmx__sigsetjmp): Add VMX reg support and define
	as default version of __sigsetjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_3, GLIBC_2_3_4)]
	(__novmx__sigsetjmp): Original version of __sigsetjmp.

	* sysdeps/powerpc/powerpc32/__longjmp-common.S: New File
	* sysdeps/powerpc/powerpc32/__longjmp.S [NOT_IN_libc](__longjmp):
	Non-versioned __longjmp for rtld-__longjmp.
	[!NOT_IN_libc](__vmx__longjmp): Add VMX reg support and define as
	default version of __longjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)]
	(__novmx__longjmp): Original version of __longjmp.
	* sysdeps/powerpc/powerpc32/bsd-_setjmp.S [NOT_IN_libc](_setjmp):
	Non-versioned _setjmp for rtld-_setjmp.
	[!NOT_IN_libc](__vmx_setjmp): Branch to __vmx__sigsetjmp and define
	as default version of _setjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)]
	(__novmx_setjmp): Original version of _setjmp.
	* sysdeps/powerpc/powerpc32/bsd-setjmp.S (__vmxsetjmp): Branch to
	__vmx__sigsetjmp and define as default version of setjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)]
	(__novmxsetjmp): Original version of setjmp.
	* sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S: New file.
	* sysdeps/powerpc/powerpc32/fpu/__longjmp.S [NOT_IN_libc](__longjmp):
	Non-versioned __longjmp for rtld-__longjmp.
	[!NOT_IN_libc](__vmx__longjmp): Add VMX reg support and define as
	default version of __longjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)]
	(__novmx__longjmp): Original version of __longjmp.
	* sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: New file.
	* sysdeps/powerpc/powerpc32/fpu/setjmp.S [NOT_IN_libc](__setjmp):
	Non-versioned __sigsetjmp for rtld-setjmp.
	[!NOT_IN_libc](__vmx__sigsetjmp): Add VMX reg support and define
	as default version of __sigsetjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)]
	(__novmx__sigsetjmp): Original version of __sigsetjmp.
	* sysdeps/powerpc/powerpc32/setjmp-common.S: New file.
	* sysdeps/powerpc/powerpc32/setjmp.S [NOT_IN_libc](__setjmp):
	Non-versioned __sigsetjmp for rtld-setjmp.
	[!NOT_IN_libc](__vmx__sigsetjmp): Add VMX reg support and define
	as default version of __sigsetjmp.
	[SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)]
	(__novmx__sigsetjmp): Original version of __sigsetjmp.

	* sysdeps/powerpc/Dist: New File.
	* sysdeps/powerpc/Makefile (sysdep_routines): Add novmx-longjmp.c
	and novmx-sigjmp.c
	* sysdeps/powerpc/Versions (libc): To GLIBC_2.3_4 add _longjmp,
	__sigsetjmp, _setjmp, longjmp, and setjmp. To GLIBC_PRIVATE add
	__novmx__libc_longjmp, __novmx__libc_siglongjmp, __vmx__libc_longjmp,
	and __vmx__libc_siglongjmp.
	* sysdeps/powerpc/bits/setjmp.h: Define JB_VRSAVE, JB_VRS, and adjust
	JB_SIZE to add VMX regs to __jmp_buf.
	* sysdeps/powerpc/longjmp.c: New file.
	* sysdeps/powerpc/novmxsetjmp.h: New file.
	* sysdeps/powerpc/novmx-longjmp.c: New file.
	* sysdeps/powerpc/novmx-sigjmp.c: New file.
	* sysdeps/powerpc/sigjmp.c: New file.

1 files changed, 22 insertions, 6 deletions

diff --git a/sysdeps/powerpc/bits/setjmp.h b/sysdeps/powerpc/bits/setjmp.h
index f849fe23ff..3134916a51 100644
--- a/sysdeps/powerpc/bits/setjmp.h
+++ b/sysdeps/powerpc/bits/setjmp.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997, 1998, 2000, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1998, 2000, 2003, 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
@@ -37,22 +37,38 @@
 # define JB_LR     2  /* The address we will return to */
 # if __WORDSIZE == 64
 #  define JB_GPRS   3  /* GPRs 14 through 31 are saved, 18*2 words total.  */
-#  define JB_CR     21 /* Condition code registers. */
+#  define JB_CR     21 /* Condition code registers with the VRSAVE at */
+                       /* offset 172 (low half of the double word.  */
 #  define JB_FPRS   22 /* FPRs 14 through 31 are saved, 18*2 words total.  */
-#  define JB_SIZE   (40*8)
+#  define JB_SIZE   (64 * 8) /* As per PPC64-VMX ABI.  */
+#  define JB_VRSAVE 21 /* VRSAVE shares a double word with the CR at offset */
+                       /* 168 (high half of the double word).  */
+#  define JB_VRS    40 /* VRs 20 through 31 are saved, 12*4 words total.  */
 # else
 #  define JB_GPRS   3  /* GPRs 14 through 31 are saved, 18 in total.  */
 #  define JB_CR     21 /* Condition code registers.  */
 #  define JB_FPRS   22 /* FPRs 14 through 31 are saved, 18*2 words total.  */
-#  define JB_SIZE   (58*4)
+#  define JB_SIZE   ((64 + (12 * 4)) * 4)
+#  define JB_VRSAVE 62
+#  define JB_VRS    64
 # endif
 #endif
 
+
+/* The current powerpc 32-bit Altivec ABI specifies for SVR4 ABI and EABI
+   the vrsave must be at byte 248 & v20 at byte 256.  So we must pad this
+   correctly on 32 bit.  It also insists that vecregs are only gauranteed
+   4 byte alignment so we need to use vperm in the setjmp/longjmp routines.
+   We have to version the code because members like  int __mask_was_saved
+   in the jmp_buf will move as jmp_buf is now larger than 248 bytes.  We
+   cannot keep the altivec jmp_buf backward compatible with the jmp_buf.  */
 #ifndef	_ASM
 # if __WORDSIZE == 64
-typedef long int __jmp_buf[40];
+typedef long int __jmp_buf[64] __attribute__ ((__aligned__ (16)));
 # else
-typedef long int __jmp_buf[58];
+/* The alignment is not essential, i.e.the buffer can be copied to a 4 byte
+   aligned buffer as per the ABI it is just added for performance reasons.  */
+typedef long int __jmp_buf[64 + (12 * 4)] __attribute__ ((__aligned__ (16)));
 # endif
 #endif