47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/*
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* This file is part of ltrace.
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* Copyright (C) 2013 Petr Machata, Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#define SUBMASK(x) ((1L << ((x) + 1)) - 1)
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#define BIT(obj,st) (((obj) >> (st)) & 1)
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#define BITS(obj,st,fn) (((obj) >> (st)) & SUBMASK((fn) - (st)))
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#define SBITS(obj,st,fn) \
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((long) (BITS(obj,st,fn) | ((long) BIT(obj,fn) * ~ SUBMASK(fn - st))))
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enum arm_register {
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ARM_REG_R7 = 7,
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ARM_REG_IP = 12,
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ARM_REG_SP = 13,
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ARM_REG_LR = 14,
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ARM_REG_PC = 15,
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ARM_REG_CPSR = 16,
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};
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/* Write value of register REG to *LP. Return 0 on success or a
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* negative value on failure. */
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int arm_get_register(struct process *proc, enum arm_register reg, uint32_t *lp);
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/* Same as above, but if REG==ARM_REG_PC, it returns the value +8. */
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int arm_get_register_offpc(struct process *proc, enum arm_register reg,
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uint32_t *lp);
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/* Same as arm_get_register, but shift is performed depending on
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* instruction INST. */
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int arm_get_shifted_register(struct process *proc, uint32_t inst, int carry,
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arch_addr_t pc, uint32_t *lp);
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