tsparc64 attempt - plan9port - [fork] Plan 9 from user space
(HTM) git clone git://src.adamsgaard.dk/plan9port
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---
(DIR) commit 0c7c441e9033e523b96b474cdbee6b63410805f9
(DIR) parent 3f8c36d6dc30334bbff4f90e182812e9bd94153c
(HTM) Author: rsc <devnull@localhost>
Date: Fri, 10 Feb 2006 05:32:42 +0000
sparc64 attempt
Diffstat:
A src/libthread/COPYING.SPARC64-CONT… | 458 +++++++++++++++++++++++++++++++
M src/libthread/COPYRIGHT | 8 ++++++++
A src/libthread/Linux-sparc64-contex… | 133 +++++++++++++++++++++++++++++++
A src/libthread/Linux-sparc64-swapco… | 48 +++++++++++++++++++++++++++++++
M src/libthread/sysofiles.sh | 8 ++++++++
5 files changed, 655 insertions(+), 0 deletions(-)
---
(DIR) diff --git a/src/libthread/COPYING.SPARC64-CONTEXT b/src/libthread/COPYING.SPARC64-CONTEXT
t@@ -0,0 +1,458 @@
+ GNU LESSER GENERAL PUBLIC LICENSE
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+
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+ END OF TERMS AND CONDITIONS
(DIR) diff --git a/src/libthread/COPYRIGHT b/src/libthread/COPYRIGHT
t@@ -43,3 +43,11 @@ Contains parts of an earlier library that has:
* OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
*/
+===
+
+The above notice does *NOT* apply to Linux-sparc64-context.S
+or to Linux-sparc64-swapcontext.c. Those are functions from
+the GNU C library and are provided for systems that use the GNU C
+library but somehow are missing those functions. They are
+distributed under the Lesser GPL; see COPYING.SPARC64-CONTEXT.
+
(DIR) diff --git a/src/libthread/Linux-sparc64-context.S b/src/libthread/Linux-sparc64-context.S
t@@ -0,0 +1,133 @@
+/* Copyright (C) 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* Constants shared between setcontext() and getcontext(). Don't
+ install this header file. */
+
+#define UC_LINK 0
+#define __UC_SIGMASK 16
+#define UC_M_PC 40
+#define UC_M_NPC 48
+#define UC_SIGMASK 536
+#define SIGMASK_WORDS 16
+
+/* Copyright (C) 1997, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@tamu.edu).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+/*#include "ucontext_i.h" (up above) */
+
+/* int getcontext(ucontext_t *); */
+
+ENTRY(__getcontext)
+
+ ldx [%o0 + UC_LINK], %o1 /* Preserve uc_link field, the
+ trap clears it. */
+ ta 0x6e
+1:
+ ldx [%o0 + UC_M_PC], %o2
+ ldx [%o0 + UC_M_NPC], %o3
+ ldx [%o0 + __UC_SIGMASK], %o4
+ stx %o1, [%o0 + UC_LINK]
+ add %o2, 2f - 1b, %o2
+ stx %o2, [%o0 + UC_M_PC]
+ add %o3, 2f - 1b, %o3
+ stx %o3, [%o0 + UC_M_NPC]
+#if SIGMASK_WORDS == 16
+ stx %o4, [%o0 + UC_SIGMASK]
+ stx %g0, [%o0 + UC_SIGMASK + 8]
+ stx %g0, [%o0 + UC_SIGMASK + 16]
+ stx %g0, [%o0 + UC_SIGMASK + 24]
+ stx %g0, [%o0 + UC_SIGMASK + 32]
+ stx %g0, [%o0 + UC_SIGMASK + 40]
+ stx %g0, [%o0 + UC_SIGMASK + 48]
+ stx %g0, [%o0 + UC_SIGMASK + 56]
+ stx %g0, [%o0 + UC_SIGMASK + 64]
+ stx %g0, [%o0 + UC_SIGMASK + 72]
+ stx %g0, [%o0 + UC_SIGMASK + 80]
+ stx %g0, [%o0 + UC_SIGMASK + 88]
+ stx %g0, [%o0 + UC_SIGMASK + 96]
+ stx %g0, [%o0 + UC_SIGMASK + 104]
+ stx %g0, [%o0 + UC_SIGMASK + 112]
+ stx %g0, [%o0 + UC_SIGMASK + 120]
+#else
+# error Adjust __getcontext
+#endif
+2:
+ retl
+ clr %o0
+
+END(__getcontext)
+
+weak_alias(__getcontext, getcontext)
+
+/* Copyright (C) 1997, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson (rth@tamu.edu).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/*
+#include <sysdep.h>
+#include "ucontext_i.h"
+*/
+
+/* int setcontext(ucontext_t *ctx); */
+.weak setcontext
+ENTRY(setcontext)
+
+ mov 1, %o1
+
+/* int __setcontext(ucontext_t *ctx, int restoremask); */
+ENTRY(__setcontext)
+
+ ldx [%o0 + UC_SIGMASK], %o2
+ stx %o2, [%o0 + __UC_SIGMASK]
+ ta 0x6f
+
+END(__setcontext)
(DIR) diff --git a/src/libthread/Linux-sparc64-swapcontext.c b/src/libthread/Linux-sparc64-swapcontext.c
t@@ -0,0 +1,48 @@
+/* Copyright (C) 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek <jakub@redhat.com>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <ucontext.h>
+
+extern int __getcontext (ucontext_t *ucp);
+extern int __setcontext (const ucontext_t *ucp, int restoremask);
+
+int
+__swapcontext (ucontext_t *oucp, const ucontext_t *ucp)
+{
+ extern void __swapcontext_ret (void);
+ /* Save the current machine context to oucp. */
+ __getcontext (oucp);
+ /* Modify oucp to skip the __setcontext call on reactivation. */
+ oucp->uc_mcontext.mc_gregs[MC_PC] = (long) __swapcontext_ret;
+ oucp->uc_mcontext.mc_gregs[MC_NPC] = ((long) __swapcontext_ret) + 4;
+ /* Restore the machine context in ucp. */
+ __setcontext (ucp, 1);
+ return 0;
+}
+
+asm (" \n\
+ .text \n\
+ .type __swapcontext_ret, #function \n\
+__swapcontext_ret: \n\
+ return %i7 + 8 \n\
+ clr %o0 \n\
+ .size __swapcontext_ret, .-__swapcontext_ret \n\
+ ");
+
+weak_alias (__swapcontext, swapcontext)
(DIR) diff --git a/src/libthread/sysofiles.sh b/src/libthread/sysofiles.sh
t@@ -30,3 +30,11 @@ case "$tag" in
echo pthread.o
esac
+case "$OBJTYPE-$SYSNAME" in
+sparc64-Linux)
+ # Debian glibc doesn't supply swapcontext, makecontext
+ # so we supply our own copy from the latest glibc.
+ echo Linux-sparc64-context.o Linux-sparc64-swapcontext.o
+ ;;
+esac
+