baa41469a7
This is a major rewrite of objtool. Instead of only tracking frame pointer changes, it now tracks all stack-related operations, including all register saves/restores. In addition to making stack validation more robust, this also paves the way for undwarf generation. Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: live-patching@vger.kernel.org Link: http://lkml.kernel.org/r/678bd94c0566c6129bcc376cddb259c4c5633004.1498659915.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* Copyright (C) 2015-2017 Josh Poimboeuf <jpoimboe@redhat.com>
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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
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* as published by the Free Software Foundation; either version 2
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* of the 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,
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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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*
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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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*/
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#ifndef _OBJTOOL_CFI_H
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#define _OBJTOOL_CFI_H
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#define CFI_UNDEFINED -1
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#define CFI_CFA -2
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#define CFI_SP_INDIRECT -3
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#define CFI_BP_INDIRECT -4
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#define CFI_AX 0
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#define CFI_DX 1
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#define CFI_CX 2
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#define CFI_BX 3
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#define CFI_SI 4
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#define CFI_DI 5
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#define CFI_BP 6
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#define CFI_SP 7
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#define CFI_R8 8
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#define CFI_R9 9
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#define CFI_R10 10
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#define CFI_R11 11
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#define CFI_R12 12
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#define CFI_R13 13
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#define CFI_R14 14
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#define CFI_R15 15
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#define CFI_RA 16
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#define CFI_NUM_REGS 17
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struct cfi_reg {
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int base;
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int offset;
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};
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struct cfi_state {
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struct cfi_reg cfa;
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struct cfi_reg regs[CFI_NUM_REGS];
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};
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#endif /* _OBJTOOL_CFI_H */
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