1c79145f12
There is no "version 2" of the "Lesser" General Public License. It is either "GPL version 2.0" or "Lesser GPL version 2.1". This patch replaces all occurrences of "Lesser GPL version 2" with "Lesser GPL version 2.1" in comment section. Signed-off-by: Chetan Pant <chetan4windows@gmail.com> Message-Id: <20201023122455.19417-1-chetan4windows@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*
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* SPARC specific CPU ABI and functions for linux-user
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*
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* Copyright (C) 2003 Thomas M. Ogrisegg <tom@fnord.at>
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* Copyright (C) 2003-2005 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SPARC_TARGET_CPU_H
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#define SPARC_TARGET_CPU_H
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static inline void cpu_clone_regs_child(CPUSPARCState *env, target_ulong newsp,
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unsigned flags)
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{
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/*
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* After cpu_copy, env->regwptr is pointing into the old env.
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* Update the new cpu to use its own register window.
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*/
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env->regwptr = env->regbase + (env->cwp * 16);
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if (newsp) {
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/* When changing stacks, do it with clean register windows. */
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#ifdef TARGET_SPARC64
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env->cansave = env->nwindows - 2;
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env->cleanwin = env->nwindows - 2;
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env->canrestore = 0;
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#else
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env->wim = 1 << env->cwp;
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#endif
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/* ??? The kernel appears to copy one stack frame to the new stack. */
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/* ??? The kernel force aligns the new stack. */
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env->regwptr[WREG_SP] = newsp;
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}
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if (flags & CLONE_VM) {
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/*
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* Syscall return for clone child: %o0 = 0 and clear CF since this
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* counts as a success return value. Advance the PC past the syscall.
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* For fork child, all of this happens in cpu_loop, and we must not
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* do the pc advance twice.
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*/
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env->regwptr[WREG_O0] = 0;
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#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
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env->xcc &= ~PSR_CARRY;
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#else
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env->psr &= ~PSR_CARRY;
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#endif
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env->pc = env->npc;
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env->npc = env->npc + 4;
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}
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/* Set the second return value for the child: %o1 = 1. */
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env->regwptr[WREG_O1] = 1;
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}
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static inline void cpu_clone_regs_parent(CPUSPARCState *env, unsigned flags)
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{
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/* Set the second return value for the parent: %o1 = 0. */
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env->regwptr[WREG_O1] = 0;
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}
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static inline void cpu_set_tls(CPUSPARCState *env, target_ulong newtls)
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{
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env->gregs[7] = newtls;
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}
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static inline abi_ulong get_sp_from_cpustate(CPUSPARCState *state)
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{
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return state->regwptr[WREG_SP];
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}
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#endif
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