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authorUlrich Drepper <drepper@redhat.com>2004-02-14 05:16:57 +0000
committerUlrich Drepper <drepper@redhat.com>2004-02-14 05:16:57 +0000
commit5c76ff279fa8fd1425b86a39fe75507660cc0b5c (patch)
tree420bed38e7d88b534f57f82497cc0dd77a26b936 /sysdeps/powerpc/bits/setjmp.h
parent9f8765bc46dbb4991dc20905c5d10d867956d489 (diff)
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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.
Diffstat (limited to 'sysdeps/powerpc/bits/setjmp.h')
-rw-r--r--sysdeps/powerpc/bits/setjmp.h28
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