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4ce6243dc6
Linux manages to have three separate orderings of the arguments to the clone() syscall on different architectures. In the kernel these are selected via CONFIG_CLONE_BACKWARDS and CONFIG_CLONE_BACKWARDS2. Clean up our implementation of this to use similar #define names rather than a TARGET_* ifdef ladder. This includes behaviour changes fixing bugs on cris, x86-64, m68k, openrisc and unicore32. cris had explicit but wrong handling; the others were just incorrectly using QEMU's default, which happened to be the equivalent of CONFIG_CLONE_BACKWARDS. (unicore32 appears to be broken in the mainline kernel in that it tries to use arg3 for both parent_tidptr and newtls simultaneously -- we don't attempt to emulate this bug...) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/*
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* PPC emulation for qemu: syscall definitions.
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*
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* Copyright (c) 2003 Jocelyn Mayer
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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 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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/* XXX: ABSOLUTELY BUGGY:
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* for now, this is quite just a cut-and-paste from i386 target...
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*/
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/* default linux values for the selectors */
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#define __USER_DS (1)
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struct target_pt_regs {
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abi_ulong gpr[32];
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abi_ulong nip;
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abi_ulong msr;
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abi_ulong orig_gpr3; /* Used for restarting system calls */
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abi_ulong ctr;
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abi_ulong link;
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abi_ulong xer;
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abi_ulong ccr;
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#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
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abi_ulong softe;
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#else
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abi_ulong mq; /* 601 only (not used at present) */
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#endif
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/* Used on APUS to hold IPL value. */
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abi_ulong trap; /* Reason for being here */
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abi_ulong dar; /* Fault registers */
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abi_ulong dsisr;
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abi_ulong result; /* Result of a system call */
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};
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/* ioctls */
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struct target_revectored_struct {
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abi_ulong __map[8]; /* 256 bits */
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};
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/* Nasty hack: define a fake errno value for use by sigreturn. */
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#define TARGET_QEMU_ESIGRETURN 255
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/*
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* flags masks
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*/
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#if defined(TARGET_PPC64) && !defined(TARGET_ABI32)
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#define UNAME_MACHINE "ppc64"
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#else
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#define UNAME_MACHINE "ppc"
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#endif
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#define TARGET_CLONE_BACKWARDS
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