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7d5c6c43ca
Many ports have the same sim syscall logic, so add some helpers to handle all the common details. The arches still have to deal with the unpacking and packing of the syscall arguments, but the rest of the sim<->callback glue is now shared.
46 lines
1.8 KiB
C
46 lines
1.8 KiB
C
/* Simulator system call support.
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Copyright 2002-2015 Free Software Foundation, Inc.
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This file is part of simulators.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef SIM_SYSCALL_H
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#define SIM_SYSCALL_H
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/* Perform a syscall on the behalf of the target program. The error/result are
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normalized into a single value (like a lot of operating systems do). If you
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want the split values, see the other function below.
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Note: While cb_syscall requires you handle the exit syscall yourself, that is
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not the case with these helpers.
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Note: Types here match the gdb callback interface. */
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long sim_syscall (SIM_CPU *, int func, long arg1, long arg2, long arg3,
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long arg4);
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/* Same as sim_syscall, but return the split values by referenced. */
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void sim_syscall_multi (SIM_CPU *, int func, long arg1, long arg2, long arg3,
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long arg4, long *result, long *result2, int *errcode);
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/* Simple memory callbacks for cb_syscall's read_mem/write_mem that assume
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cb_syscall's p1 and p2 are set to the SIM_DESC and SIM_CPU respectively. */
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int sim_syscall_read_mem (host_callback *, struct cb_syscall *, unsigned long,
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char *, int);
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int sim_syscall_write_mem (host_callback *, struct cb_syscall *, unsigned long,
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const char *, int);
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#endif
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