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author | Russ Cox <rsc@swtch.com> | 2020-12-30 07:18:30 -0500 |
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committer | Russ Cox <rsc@swtch.com> | 2020-12-30 07:53:28 -0500 |
commit | 18571208068d5fe2f0bf7b4e980525a7f577c503 (patch) | |
tree | baf2061164df38258cc6127a102ab76d9089fb31 /src/libthread/sparc64-ucontext.c | |
parent | e68f07d46f5f168dc2076286627279540bf1f99e (diff) | |
download | plan9port-18571208068d5fe2f0bf7b4e980525a7f577c503.tar.gz plan9port-18571208068d5fe2f0bf7b4e980525a7f577c503.tar.bz2 plan9port-18571208068d5fe2f0bf7b4e980525a7f577c503.zip |
libthread: simplify
Now that everything uses pthreads and pthreadperthread,
can delete various conditionals, all the custom context code,
and so on. Also update documents.
Fixes #355.
Diffstat (limited to 'src/libthread/sparc64-ucontext.c')
-rw-r--r-- | src/libthread/sparc64-ucontext.c | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/src/libthread/sparc64-ucontext.c b/src/libthread/sparc64-ucontext.c deleted file mode 100644 index e4800c19..00000000 --- a/src/libthread/sparc64-ucontext.c +++ /dev/null @@ -1,49 +0,0 @@ -/* 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> - -#define UC_M_PC 40 -#define UC_M_NPC 48 - -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. */ - *(long*)((char*)oucp+UC_M_PC) = (long)__swapcontext_ret; - *(long*)((char*)oucp+UC_M_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\ - "); |