2003-05-31 21:18:05 +02:00
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/* Frame unwinder for frames with DWARF Call Frame Information.
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2020-01-01 07:20:01 +01:00
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Copyright (C) 2003-2020 Free Software Foundation, Inc.
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2003-05-31 21:18:05 +02:00
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Contributed by Mark Kettenis.
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This file is part of GDB.
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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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2007-08-23 20:08:50 +02:00
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the Free Software Foundation; either version 3 of the License, or
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2003-05-31 21:18:05 +02:00
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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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2007-08-23 20:08:50 +02:00
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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2003-05-31 21:18:05 +02:00
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#ifndef DWARF2_FRAME_H
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#define DWARF2_FRAME_H 1
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2004-02-28 17:59:32 +01:00
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struct gdbarch;
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2003-05-31 21:18:05 +02:00
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struct objfile;
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2003-07-18 21:01:14 +02:00
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struct frame_info;
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2011-02-17 17:20:44 +01:00
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struct dwarf2_per_cu_data;
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struct agent_expr;
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struct axs_value;
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2003-05-31 21:18:05 +02:00
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2004-02-07 15:44:50 +01:00
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/* Register rule. */
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enum dwarf2_frame_reg_rule
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{
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/* Make certain that 0 maps onto the correct enum value; the
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corresponding structure is being initialized using memset zero.
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This indicates that CFI didn't provide any information at all
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about a register, leaving how to obtain its value totally
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unspecified. */
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DWARF2_FRAME_REG_UNSPECIFIED = 0,
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/* The term "undefined" comes from the DWARF2 CFI spec which this
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2019-10-26 09:55:32 +02:00
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code is modeling; it indicates that the register's value is
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2004-02-07 15:44:50 +01:00
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"undefined". GCC uses the less formal term "unsaved". Its
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definition is a combination of REG_UNDEFINED and REG_UNSPECIFIED.
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The failure to differentiate the two helps explain a few problems
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with the CFI generated by GCC. */
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DWARF2_FRAME_REG_UNDEFINED,
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DWARF2_FRAME_REG_SAVED_OFFSET,
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DWARF2_FRAME_REG_SAVED_REG,
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DWARF2_FRAME_REG_SAVED_EXP,
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DWARF2_FRAME_REG_SAME_VALUE,
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2006-05-28 07:56:50 +02:00
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/* These are defined in Dwarf3. */
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DWARF2_FRAME_REG_SAVED_VAL_OFFSET,
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DWARF2_FRAME_REG_SAVED_VAL_EXP,
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2004-02-07 15:44:50 +01:00
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/* These aren't defined by the DWARF2 CFI specification, but are
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used internally by GDB. */
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2008-05-01 20:30:51 +02:00
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DWARF2_FRAME_REG_FN, /* Call a registered function. */
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2004-02-07 15:44:50 +01:00
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DWARF2_FRAME_REG_RA, /* Return Address. */
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2005-03-25 17:51:40 +01:00
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DWARF2_FRAME_REG_RA_OFFSET, /* Return Address with offset. */
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2005-11-29 08:52:39 +01:00
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DWARF2_FRAME_REG_CFA, /* Call Frame Address. */
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DWARF2_FRAME_REG_CFA_OFFSET /* Call Frame Address with offset. */
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2004-02-07 15:44:50 +01:00
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};
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/* Register state. */
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struct dwarf2_frame_state_reg
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{
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/* Each register save state can be described in terms of a CFA slot,
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another register, or a location expression. */
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union {
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LONGEST offset;
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ULONGEST reg;
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2017-08-11 10:30:02 +02:00
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struct
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{
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const gdb_byte *start;
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ULONGEST len;
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} exp;
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2008-05-01 20:30:51 +02:00
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struct value *(*fn) (struct frame_info *this_frame, void **this_cache,
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int regnum);
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2004-02-07 15:44:50 +01:00
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} loc;
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enum dwarf2_frame_reg_rule how;
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};
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2017-04-26 15:05:03 +02:00
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enum cfa_how_kind
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{
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CFA_UNSET,
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CFA_REG_OFFSET,
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CFA_EXP
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};
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struct dwarf2_frame_state_reg_info
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{
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2017-08-11 10:30:02 +02:00
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dwarf2_frame_state_reg_info () = default;
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~dwarf2_frame_state_reg_info ()
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{
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delete prev;
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}
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/* Copy constructor. */
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dwarf2_frame_state_reg_info (const dwarf2_frame_state_reg_info &src)
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2018-08-29 00:14:52 +02:00
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: reg (src.reg), cfa_offset (src.cfa_offset),
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2017-08-11 10:30:02 +02:00
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cfa_reg (src.cfa_reg), cfa_how (src.cfa_how), cfa_exp (src.cfa_exp),
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prev (src.prev)
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{
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}
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/* Assignment operator for both move-assignment and copy-assignment. */
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dwarf2_frame_state_reg_info&
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operator= (dwarf2_frame_state_reg_info rhs)
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{
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swap (*this, rhs);
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return *this;
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}
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/* Move constructor. */
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dwarf2_frame_state_reg_info (dwarf2_frame_state_reg_info &&rhs) noexcept
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2018-08-29 00:14:52 +02:00
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: reg (std::move (rhs.reg)), cfa_offset (rhs.cfa_offset),
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2017-08-11 10:30:02 +02:00
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cfa_reg (rhs.cfa_reg), cfa_how (rhs.cfa_how), cfa_exp (rhs.cfa_exp),
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prev (rhs.prev)
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{
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rhs.prev = nullptr;
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}
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2017-04-26 15:05:03 +02:00
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2018-08-29 00:14:52 +02:00
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/* If necessary, enlarge the register set to hold NUM_REGS_REQUESTED
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registers. */
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2017-08-11 10:30:02 +02:00
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void alloc_regs (int num_regs_requested)
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{
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2018-08-29 00:14:52 +02:00
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gdb_assert (num_regs_requested > 0);
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2017-08-11 10:30:02 +02:00
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2018-08-29 00:14:52 +02:00
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if (num_regs_requested <= reg.size ())
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return;
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2017-08-11 10:30:02 +02:00
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2018-08-29 00:14:52 +02:00
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reg.resize (num_regs_requested);
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2017-08-11 10:30:02 +02:00
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}
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2018-08-29 00:14:52 +02:00
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std::vector<struct dwarf2_frame_state_reg> reg;
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2017-08-11 10:30:02 +02:00
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LONGEST cfa_offset = 0;
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ULONGEST cfa_reg = 0;
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enum cfa_how_kind cfa_how = CFA_UNSET;
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const gdb_byte *cfa_exp = NULL;
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2017-04-26 15:05:03 +02:00
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/* Used to implement DW_CFA_remember_state. */
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2017-08-11 10:30:02 +02:00
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struct dwarf2_frame_state_reg_info *prev = NULL;
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private:
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friend void swap (dwarf2_frame_state_reg_info& lhs,
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dwarf2_frame_state_reg_info& rhs)
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{
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using std::swap;
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swap (lhs.reg, rhs.reg);
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swap (lhs.cfa_offset, rhs.cfa_offset);
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swap (lhs.cfa_reg, rhs.cfa_reg);
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swap (lhs.cfa_how, rhs.cfa_how);
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swap (lhs.cfa_exp, rhs.cfa_exp);
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swap (lhs.prev, rhs.prev);
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}
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2017-04-26 15:05:03 +02:00
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};
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2017-08-11 10:30:02 +02:00
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struct dwarf2_cie;
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2017-04-26 15:05:03 +02:00
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/* Structure describing a frame state. */
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struct dwarf2_frame_state
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{
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2017-08-11 10:30:02 +02:00
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dwarf2_frame_state (CORE_ADDR pc, struct dwarf2_cie *cie);
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2017-04-26 15:05:03 +02:00
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/* Each register save state can be described in terms of a CFA slot,
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another register, or a location expression. */
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2017-08-11 10:30:02 +02:00
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struct dwarf2_frame_state_reg_info regs {};
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2017-04-26 15:05:03 +02:00
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/* The PC described by the current frame state. */
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CORE_ADDR pc;
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/* Initial register set from the CIE.
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Used to implement DW_CFA_restore. */
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2017-08-11 10:30:02 +02:00
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struct dwarf2_frame_state_reg_info initial {};
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2017-04-26 15:05:03 +02:00
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/* The information we care about from the CIE. */
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2017-08-11 10:30:02 +02:00
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const LONGEST data_align;
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const ULONGEST code_align;
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const ULONGEST retaddr_column;
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2017-04-26 15:05:03 +02:00
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/* Flags for known producer quirks. */
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/* The ARM compilers, in DWARF2 mode, assume that DW_CFA_def_cfa
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and DW_CFA_def_cfa_offset takes a factored offset. */
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2017-08-11 10:30:02 +02:00
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bool armcc_cfa_offsets_sf = false;
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2017-04-26 15:05:03 +02:00
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/* The ARM compilers, in DWARF2 or DWARF3 mode, may assume that
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the CFA is defined as REG - OFFSET rather than REG + OFFSET. */
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2017-08-11 10:30:02 +02:00
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bool armcc_cfa_offsets_reversed = false;
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2017-04-26 15:05:03 +02:00
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};
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2018-07-13 13:01:16 +02:00
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/* When this is true the DWARF frame unwinders can be used if they are
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registered with the gdbarch. Not all architectures can or do use the
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DWARF unwinders. Setting this to true on a target that does not
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otherwise support the DWARF unwinders has no effect. */
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Change boolean options to bool instead of int
This is for add_setshow_boolean_cmd as well as the gdb::option interface.
gdb/ChangeLog:
2019-09-17 Christian Biesinger <cbiesinger@google.com>
* ada-lang.c (ada_ignore_descriptive_types_p): Change to bool.
(print_signatures): Likewise.
(trust_pad_over_xvs): Likewise.
* arch/aarch64-insn.c (aarch64_debug): Likewise.
* arch/aarch64-insn.h (aarch64_debug): Likewise.
* arm-linux-nat.c (arm_apcs_32): Likewise.
* arm-linux-tdep.c (arm_apcs_32): Likewise.
* arm-nbsd-nat.c (arm_apcs_32): Likewise.
* arm-tdep.c (arm_debug): Likewise.
(arm_apcs_32): Likewise.
* auto-load.c (debug_auto_load): Likewise.
(auto_load_gdb_scripts): Likewise.
(global_auto_load): Likewise.
(auto_load_local_gdbinit): Likewise.
(auto_load_local_gdbinit_loaded): Likewise.
* auto-load.h (global_auto_load): Likewise.
(auto_load_local_gdbinit): Likewise.
(auto_load_local_gdbinit_loaded): Likewise.
* breakpoint.c (disconnected_dprintf): Likewise.
(breakpoint_proceeded): Likewise.
(automatic_hardware_breakpoints): Likewise.
(always_inserted_mode): Likewise.
(target_exact_watchpoints): Likewise.
(_initialize_breakpoint): Update.
* breakpoint.h (target_exact_watchpoints): Change to bool.
* btrace.c (maint_btrace_pt_skip_pad): Likewise.
* cli/cli-cmds.c (trace_commands): Likewise.
* cli/cli-cmds.h (trace_commands): Likewise.
* cli/cli-decode.c (add_setshow_boolean_cmd): Change int* argument
to bool*.
* cli/cli-logging.c (logging_overwrite): Change to bool.
(logging_redirect): Likewise.
(debug_redirect): Likewise.
* cli/cli-option.h (option_def) <boolean>: Change return type to bool*.
(struct boolean_option_def) <get_var_address_cb_>: Change return type
to bool.
<boolean_option_def>: Update.
(struct flag_option_def): Change default type of Context to bool
from int.
<flag_option_def>: Change return type of var_address_cb_ to bool*.
* cli/cli-setshow.c (do_set_command): Cast to bool* instead of int*.
(get_setshow_command_value_string): Likewise.
* cli/cli-style.c (cli_styling): Change to bool.
(source_styling): Likewise.
* cli/cli-style.h (source_styling): Likewise.
(cli_styling): Likewise.
* cli/cli-utils.h (struct qcs_flags) <quiet, cont, silent>: Change
to bool.
* command.h (var_types): Update comment.
(add_setshow_boolean_cmd): Change int* var argument to bool*.
* compile/compile-cplus-types.c (debug_compile_cplus_types): Change to
bool.
(debug_compile_cplus_scopes): Likewise.
* compile/compile-internal.h (compile_debug): Likewise.
* compile/compile.c (compile_debug): Likewise.
(struct compile_options) <raw>: Likewise.
* cp-support.c (catch_demangler_crashes): Likewise.
* cris-tdep.c (usr_cmd_cris_version_valid): Likewise.
(usr_cmd_cris_dwarf2_cfi): Likewise.
* csky-tdep.c (csky_debug): Likewise.
* darwin-nat.c (enable_mach_exceptions): Likewise.
* dcache.c (dcache_enabled_p): Likewise.
* defs.h (info_verbose): Likewise.
* demangle.c (demangle): Likewise.
(asm_demangle): Likewise.
* dwarf-index-cache.c (debug_index_cache): Likewise.
* dwarf2-frame.c (dwarf2_frame_unwinders_enabled_p): Likewise.
* dwarf2-frame.h (dwarf2_frame_unwinders_enabled_p): Likewise.
* dwarf2read.c (check_physname): Likewise.
(use_deprecated_index_sections): Likewise.
(dwarf_always_disassemble): Likewise.
* eval.c (overload_resolution): Likewise.
* event-top.c (set_editing_cmd_var): Likewise.
(exec_done_display_p): Likewise.
* event-top.h (set_editing_cmd_var): Likewise.
(exec_done_display_p): Likewise.
* exec.c (write_files): Likewise.
* fbsd-nat.c (debug_fbsd_lwp): Likewise
(debug_fbsd_nat): Likewise.
* frame.h (struct frame_print_options) <print_raw_frame_arguments>:
Likewise.
(struct set_backtrace_options) <backtrace_past_main>: Likewise.
<backtrace_past_entry> Likewise.
* gdb-demangle.h (demangle): Likewise.
(asm_demangle): Likewise.
* gdb_bfd.c (bfd_sharing): Likewise.
* gdbcore.h (write_files): Likewise.
* gdbsupport/common-debug.c (show_debug_regs): Likewise.
* gdbsupport/common-debug.h (show_debug_regs): Likewise.
* gdbthread.h (print_thread_events): Likewise.
* gdbtypes.c (opaque_type_resolution): Likewise.
(strict_type_checking): Likewise.
* gnu-nat.c (gnu_debug_flag): Likewise.
* guile/scm-auto-load.c (auto_load_guile_scripts): Likewise.
* guile/scm-param.c (pascm_variable): Add boolval.
(add_setshow_generic): Update.
(pascm_param_value): Update.
(pascm_set_param_value_x): Update.
* hppa-tdep.c (hppa_debug): Change to bool..
* infcall.c (may_call_functions_p): Likewise.
(coerce_float_to_double_p): Likewise.
(unwind_on_signal_p): Likewise.
(unwind_on_terminating_exception_p): Likewise.
* infcmd.c (startup_with_shell): Likewise.
* inferior.c (print_inferior_events): Likewise.
* inferior.h (startup_with_shell): Likewise.
(print_inferior_events): Likewise.
* infrun.c (step_stop_if_no_debug): Likewise.
(detach_fork): Likewise.
(debug_displaced): Likewise.
(disable_randomization): Likewise.
(non_stop): Likewise.
(non_stop_1): Likewise.
(observer_mode): Likewise.
(observer_mode_1): Likewise.
(set_observer_mode): Update.
(sched_multi): Change to bool.
* infrun.h (debug_displaced): Likewise.
(sched_multi): Likewise.
(step_stop_if_no_debug): Likewise.
(non_stop): Likewise.
(disable_randomization): Likewise.
* linux-tdep.c (use_coredump_filter): Likewise.
(dump_excluded_mappings): Likewise.
* linux-thread-db.c (auto_load_thread_db): Likewise.
(check_thread_db_on_load): Likewise.
* main.c (captured_main_1): Update.
* maint-test-options.c (struct test_options_opts) <flag_opt, xx1_opt,
xx2_opt, boolean_opt>: Change to bool.
* maint-test-settings.c (maintenance_test_settings_boolean): Likewise.
* maint.c (maintenance_profile_p): Likewise.
(per_command_time): Likewise.
(per_command_space): Likewise.
(per_command_symtab): Likewise.
* memattr.c (inaccessible_by_default): Likewise.
* mi/mi-main.c (mi_async): Likewise.
(mi_async_1): Likewise.
* mips-tdep.c (mips64_transfers_32bit_regs_p): Likewise.
* nat/fork-inferior.h (startup_with_shell): Likewise.
* nat/linux-namespaces.c (debug_linux_namespaces): Likewise.
* nat/linux-namespaces.h (debug_linux_namespaces): Likewise.
* nios2-tdep.c (nios2_debug): Likewise.
* or1k-tdep.c (or1k_debug): Likewise.
* parse.c (parser_debug): Likewise.
* parser-defs.h (parser_debug): Likewise.
* printcmd.c (print_symbol_filename): Likewise.
* proc-api.c (procfs_trace): Likewise.
* python/py-auto-load.c (auto_load_python_scripts): Likewise.
* python/py-param.c (union parmpy_variable): Add "bool boolval" field.
(set_parameter_value): Update.
(add_setshow_generic): Update.
* python/py-value.c (copy_py_bool_obj): Change argument from int*
to bool*.
* python/python.c (gdbpy_parameter_value): Cast to bool* instead of
int*.
* ravenscar-thread.c (ravenscar_task_support): Change to bool.
* record-btrace.c (record_btrace_target::store_registers): Update.
* record-full.c (record_full_memory_query): Change to bool.
(record_full_stop_at_limit): Likewise.
* record-full.h (record_full_memory_query): Likewise.
* remote-notif.c (notif_debug): Likewise.
* remote-notif.h (notif_debug): Likewise.
* remote.c (use_range_stepping): Likewise.
(interrupt_on_connect): Likewise.
(remote_break): Likewise.
* ser-tcp.c (tcp_auto_retry): Likewise.
* ser-unix.c (serial_hwflow): Likewise.
* skip.c (debug_skip): Likewise.
* solib-aix.c (solib_aix_debug): Likewise.
* spu-tdep.c (spu_stop_on_load_p): Likewise.
(spu_auto_flush_cache_p): Likewise.
* stack.c (struct backtrace_cmd_options) <full, no_filters, hide>:
Likewise.
(struct info_print_options) <quiet>: Likewise.
* symfile-debug.c (debug_symfile): Likewise.
* symfile.c (auto_solib_add): Likewise.
(separate_debug_file_debug): Likewise.
* symfile.h (auto_solib_add): Likewise.
(separate_debug_file_debug): Likewise.
* symtab.c (basenames_may_differ): Likewise.
(struct filename_partial_match_opts) <dirname, basename>: Likewise.
(struct info_print_options) <quiet, exclude_minsyms>: Likewise.
(struct info_types_options) <quiet>: Likewise.
* symtab.h (demangle): Likewise.
(basenames_may_differ): Likewise.
* target-dcache.c (stack_cache_enabled_1): Likewise.
(code_cache_enabled_1): Likewise.
* target.c (trust_readonly): Likewise.
(may_write_registers): Likewise.
(may_write_memory): Likewise.
(may_insert_breakpoints): Likewise.
(may_insert_tracepoints): Likewise.
(may_insert_fast_tracepoints): Likewise.
(may_stop): Likewise.
(auto_connect_native_target): Likewise.
(target_stop_and_wait): Update.
(target_async_permitted): Change to bool.
(target_async_permitted_1): Likewise.
(may_write_registers_1): Likewise.
(may_write_memory_1): Likewise.
(may_insert_breakpoints_1): Likewise.
(may_insert_tracepoints_1): Likewise.
(may_insert_fast_tracepoints_1): Likewise.
(may_stop_1): Likewise.
* target.h (target_async_permitted): Likewise.
(may_write_registers): Likewise.
(may_write_memory): Likewise.
(may_insert_breakpoints): Likewise.
(may_insert_tracepoints): Likewise.
(may_insert_fast_tracepoints): Likewise.
(may_stop): Likewise.
* thread.c (struct info_threads_opts) <show_global_ids>: Likewise.
(make_thread_apply_all_options_def_group): Change argument from int*
to bool*.
(thread_apply_all_command): Update.
(print_thread_events): Change to bool.
* top.c (confirm): Likewise.
(command_editing_p): Likewise.
(history_expansion_p): Likewise.
(write_history_p): Likewise.
(info_verbose): Likewise.
* top.h (confirm): Likewise.
(history_expansion_p): Likewise.
* tracepoint.c (disconnected_tracing): Likewise.
(circular_trace_buffer): Likewise.
* typeprint.c (print_methods): Likewise.
(print_typedefs): Likewise.
* utils.c (debug_timestamp): Likewise.
(sevenbit_strings): Likewise.
(pagination_enabled): Likewise.
* utils.h (sevenbit_strings): Likewise.
(pagination_enabled): Likewise.
* valops.c (overload_resolution): Likewise.
* valprint.h (struct value_print_options) <prettyformat_arrays,
prettyformat_structs, vtblprint, unionprint, addressprint, objectprint,
stop_print_at_null, print_array_indexes, deref_ref, static_field_print,
pascal_static_field_print, raw, summary, symbol_print, finish_print>:
Likewise.
* windows-nat.c (new_console): Likewise.
(cygwin_exceptions): Likewise.
(new_group): Likewise.
(debug_exec): Likewise.
(debug_events): Likewise.
(debug_memory): Likewise.
(debug_exceptions): Likewise.
(useshell): Likewise.
* windows-tdep.c (maint_display_all_tib): Likewise.
* xml-support.c (debug_xml): Likewise.
2019-09-14 21:36:58 +02:00
|
|
|
extern bool dwarf2_frame_unwinders_enabled_p;
|
2018-07-13 13:01:16 +02:00
|
|
|
|
2004-02-15 22:29:26 +01:00
|
|
|
/* Set the architecture-specific register state initialization
|
|
|
|
function for GDBARCH to INIT_REG. */
|
|
|
|
|
|
|
|
extern void dwarf2_frame_set_init_reg (struct gdbarch *gdbarch,
|
|
|
|
void (*init_reg) (struct gdbarch *, int,
|
2006-04-05 22:01:19 +02:00
|
|
|
struct dwarf2_frame_state_reg *,
|
|
|
|
struct frame_info *));
|
2004-02-15 22:29:26 +01:00
|
|
|
|
2004-11-07 22:16:11 +01:00
|
|
|
/* Set the architecture-specific signal trampoline recognition
|
|
|
|
function for GDBARCH to SIGNAL_FRAME_P. */
|
|
|
|
|
|
|
|
extern void
|
|
|
|
dwarf2_frame_set_signal_frame_p (struct gdbarch *gdbarch,
|
|
|
|
int (*signal_frame_p) (struct gdbarch *,
|
|
|
|
struct frame_info *));
|
|
|
|
|
2007-03-27 21:02:42 +02:00
|
|
|
/* Set the architecture-specific adjustment of .eh_frame and .debug_frame
|
|
|
|
register numbers. */
|
2006-05-09 23:14:17 +02:00
|
|
|
|
|
|
|
extern void
|
2007-03-27 21:02:42 +02:00
|
|
|
dwarf2_frame_set_adjust_regnum (struct gdbarch *gdbarch,
|
|
|
|
int (*adjust_regnum) (struct gdbarch *,
|
|
|
|
int, int));
|
2006-05-09 23:14:17 +02:00
|
|
|
|
2008-04-30 23:18:28 +02:00
|
|
|
/* Append the DWARF-2 frame unwinders to GDBARCH's list. */
|
2003-05-31 21:18:05 +02:00
|
|
|
|
2008-04-30 23:18:28 +02:00
|
|
|
void dwarf2_append_unwinders (struct gdbarch *gdbarch);
|
2003-05-31 21:18:05 +02:00
|
|
|
|
|
|
|
/* Return the frame base methods for the function that contains PC, or
|
|
|
|
NULL if it can't be handled by the DWARF CFI frame unwinder. */
|
|
|
|
|
2004-02-07 15:44:50 +01:00
|
|
|
extern const struct frame_base *
|
2008-04-30 23:18:28 +02:00
|
|
|
dwarf2_frame_base_sniffer (struct frame_info *this_frame);
|
2003-05-31 21:18:05 +02:00
|
|
|
|
2009-09-02 16:53:57 +02:00
|
|
|
/* Compute the DWARF CFA for a frame. */
|
|
|
|
|
|
|
|
CORE_ADDR dwarf2_frame_cfa (struct frame_info *this_frame);
|
|
|
|
|
2014-05-14 22:25:01 +02:00
|
|
|
/* Find the CFA information for PC.
|
|
|
|
|
|
|
|
Return 1 if a register is used for the CFA, or 0 if another
|
|
|
|
expression is used. Throw an exception on error.
|
|
|
|
|
|
|
|
GDBARCH is the architecture to use.
|
|
|
|
DATA is the per-CU data.
|
|
|
|
|
|
|
|
REGNUM_OUT is an out parameter that is set to the register number.
|
|
|
|
OFFSET_OUT is the offset to use from this register.
|
|
|
|
These are only filled in when 1 is returned.
|
|
|
|
|
|
|
|
TEXT_OFFSET_OUT, CFA_START_OUT, and CFA_END_OUT describe the CFA
|
|
|
|
in other cases. These are only used when 0 is returned. */
|
|
|
|
|
|
|
|
extern int dwarf2_fetch_cfa_info (struct gdbarch *gdbarch, CORE_ADDR pc,
|
|
|
|
struct dwarf2_per_cu_data *data,
|
|
|
|
int *regnum_out, LONGEST *offset_out,
|
|
|
|
CORE_ADDR *text_offset_out,
|
|
|
|
const gdb_byte **cfa_start_out,
|
|
|
|
const gdb_byte **cfa_end_out);
|
2011-02-17 17:20:44 +01:00
|
|
|
|
2003-05-31 21:18:05 +02:00
|
|
|
#endif /* dwarf2-frame.h */
|