(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

[thirdparty/glibc.git] / sysdeps / powerpc / bits / setjmp.h

diff --git a/sysdeps/powerpc/bits/setjmp.h b/sysdeps/powerpc/bits/setjmp.h
index 9c3e22abac8b97708ae890488b05afde83be7266..3134916a51798ef4eceb62728224a196e0a0f4d8 100644 (file)
--- a/sysdeps/powerpc/bits/setjmp.h
+++ b/sysdeps/powerpc/bits/setjmp.h
@@ -1,5 +1,4 @@
-/* Copyright (C) 1997,1998,2000,2003,2004,2005,2006
-       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
@@ -32,6 +31,30 @@
 
 #include <bits/wordsize.h>
 
+#if defined __USE_MISC || defined _ASM
+# define JB_GPR1   0  /* Also known as the stack pointer */
+# define JB_GPR2   1
+# 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 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   (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   ((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
@@ -49,4 +72,9 @@ typedef long int __jmp_buf[64 + (12 * 4)] __attribute__ ((__aligned__ (16)));
 # endif
 #endif
 
+/* Test if longjmp to JMPBUF would unwind the frame
+   containing a local variable at ADDRESS.  */
+#define _JMPBUF_UNWINDS(jmpbuf, address) \
+  ((void *) (address) < (void *) (jmpbuf)[JB_GPR1])
+
 #endif  /* bits/setjmp.h */