2855 lines
89 KiB
C
2855 lines
89 KiB
C
/* Target-dependent code for the IA-64 for GDB, the GNU debugger.
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Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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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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the Free Software Foundation; either version 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "inferior.h"
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#include "symfile.h" /* for entry_point_address */
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#include "gdbcore.h"
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#include "arch-utils.h"
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#include "floatformat.h"
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#include "regcache.h"
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#include "reggroups.h"
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#include "frame.h"
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#include "frame-base.h"
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#include "frame-unwind.h"
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#include "doublest.h"
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#include "value.h"
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#include "gdb_assert.h"
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#include "objfiles.h"
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#include "elf/common.h" /* for DT_PLTGOT value */
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#include "elf-bfd.h"
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#include "dis-asm.h"
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/* Hook for determining the global pointer when calling functions in
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the inferior under AIX. The initialization code in ia64-aix-nat.c
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sets this hook to the address of a function which will find the
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global pointer for a given address.
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The generic code which uses the dynamic section in the inferior for
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finding the global pointer is not of much use on AIX since the
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values obtained from the inferior have not been relocated. */
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CORE_ADDR (*native_find_global_pointer) (CORE_ADDR) = 0;
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/* An enumeration of the different IA-64 instruction types. */
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typedef enum instruction_type
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{
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A, /* Integer ALU ; I-unit or M-unit */
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I, /* Non-ALU integer; I-unit */
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M, /* Memory ; M-unit */
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F, /* Floating-point ; F-unit */
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B, /* Branch ; B-unit */
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L, /* Extended (L+X) ; I-unit */
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X, /* Extended (L+X) ; I-unit */
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undefined /* undefined or reserved */
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} instruction_type;
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/* We represent IA-64 PC addresses as the value of the instruction
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pointer or'd with some bit combination in the low nibble which
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represents the slot number in the bundle addressed by the
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instruction pointer. The problem is that the Linux kernel
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multiplies its slot numbers (for exceptions) by one while the
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disassembler multiplies its slot numbers by 6. In addition, I've
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heard it said that the simulator uses 1 as the multiplier.
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I've fixed the disassembler so that the bytes_per_line field will
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be the slot multiplier. If bytes_per_line comes in as zero, it
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is set to six (which is how it was set up initially). -- objdump
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displays pretty disassembly dumps with this value. For our purposes,
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we'll set bytes_per_line to SLOT_MULTIPLIER. This is okay since we
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never want to also display the raw bytes the way objdump does. */
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#define SLOT_MULTIPLIER 1
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/* Length in bytes of an instruction bundle */
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#define BUNDLE_LEN 16
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/* FIXME: These extern declarations should go in ia64-tdep.h. */
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extern CORE_ADDR ia64_linux_sigcontext_register_address (CORE_ADDR, int);
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extern CORE_ADDR ia64_aix_sigcontext_register_address (CORE_ADDR, int);
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static gdbarch_init_ftype ia64_gdbarch_init;
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static gdbarch_register_name_ftype ia64_register_name;
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static gdbarch_register_type_ftype ia64_register_type;
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static gdbarch_breakpoint_from_pc_ftype ia64_breakpoint_from_pc;
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static gdbarch_skip_prologue_ftype ia64_skip_prologue;
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static gdbarch_extract_return_value_ftype ia64_extract_return_value;
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static gdbarch_extract_struct_value_address_ftype ia64_extract_struct_value_address;
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static gdbarch_use_struct_convention_ftype ia64_use_struct_convention;
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static struct type *is_float_or_hfa_type (struct type *t);
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static struct type *builtin_type_ia64_ext;
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#define NUM_IA64_RAW_REGS 462
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static int sp_regnum = IA64_GR12_REGNUM;
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static int fp_regnum = IA64_VFP_REGNUM;
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static int lr_regnum = IA64_VRAP_REGNUM;
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/* NOTE: we treat the register stack registers r32-r127 as pseudo-registers because
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they may not be accessible via the ptrace register get/set interfaces. */
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enum pseudo_regs { FIRST_PSEUDO_REGNUM = NUM_IA64_RAW_REGS, VBOF_REGNUM = IA64_NAT127_REGNUM + 1, V32_REGNUM,
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V127_REGNUM = V32_REGNUM + 95,
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VP0_REGNUM, VP16_REGNUM = VP0_REGNUM + 16, VP63_REGNUM = VP0_REGNUM + 63, LAST_PSEUDO_REGNUM };
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/* Array of register names; There should be ia64_num_regs strings in
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the initializer. */
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static char *ia64_register_names[] =
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{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
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"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
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"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
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"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
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"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
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"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
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"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
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"f32", "f33", "f34", "f35", "f36", "f37", "f38", "f39",
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"f40", "f41", "f42", "f43", "f44", "f45", "f46", "f47",
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"f48", "f49", "f50", "f51", "f52", "f53", "f54", "f55",
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"f56", "f57", "f58", "f59", "f60", "f61", "f62", "f63",
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"f64", "f65", "f66", "f67", "f68", "f69", "f70", "f71",
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"f72", "f73", "f74", "f75", "f76", "f77", "f78", "f79",
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"f80", "f81", "f82", "f83", "f84", "f85", "f86", "f87",
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"f88", "f89", "f90", "f91", "f92", "f93", "f94", "f95",
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"f96", "f97", "f98", "f99", "f100", "f101", "f102", "f103",
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"f104", "f105", "f106", "f107", "f108", "f109", "f110", "f111",
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"f112", "f113", "f114", "f115", "f116", "f117", "f118", "f119",
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"f120", "f121", "f122", "f123", "f124", "f125", "f126", "f127",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "",
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"b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7",
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"vfp", "vrap",
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"pr", "ip", "psr", "cfm",
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"kr0", "kr1", "kr2", "kr3", "kr4", "kr5", "kr6", "kr7",
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"", "", "", "", "", "", "", "",
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"rsc", "bsp", "bspstore", "rnat",
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"", "fcr", "", "",
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"eflag", "csd", "ssd", "cflg", "fsr", "fir", "fdr", "",
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"ccv", "", "", "", "unat", "", "", "",
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"fpsr", "", "", "", "itc",
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"", "", "", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "", "",
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"pfs", "lc", "ec",
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"", "", "", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "", "", "",
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"", "", "", "", "", "", "", "", "", "",
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"",
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"nat0", "nat1", "nat2", "nat3", "nat4", "nat5", "nat6", "nat7",
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"nat8", "nat9", "nat10", "nat11", "nat12", "nat13", "nat14", "nat15",
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"nat16", "nat17", "nat18", "nat19", "nat20", "nat21", "nat22", "nat23",
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"nat24", "nat25", "nat26", "nat27", "nat28", "nat29", "nat30", "nat31",
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"nat32", "nat33", "nat34", "nat35", "nat36", "nat37", "nat38", "nat39",
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"nat40", "nat41", "nat42", "nat43", "nat44", "nat45", "nat46", "nat47",
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"nat48", "nat49", "nat50", "nat51", "nat52", "nat53", "nat54", "nat55",
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"nat56", "nat57", "nat58", "nat59", "nat60", "nat61", "nat62", "nat63",
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"nat64", "nat65", "nat66", "nat67", "nat68", "nat69", "nat70", "nat71",
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"nat72", "nat73", "nat74", "nat75", "nat76", "nat77", "nat78", "nat79",
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"nat80", "nat81", "nat82", "nat83", "nat84", "nat85", "nat86", "nat87",
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"nat88", "nat89", "nat90", "nat91", "nat92", "nat93", "nat94", "nat95",
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"nat96", "nat97", "nat98", "nat99", "nat100","nat101","nat102","nat103",
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"nat104","nat105","nat106","nat107","nat108","nat109","nat110","nat111",
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"nat112","nat113","nat114","nat115","nat116","nat117","nat118","nat119",
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"nat120","nat121","nat122","nat123","nat124","nat125","nat126","nat127",
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"bof",
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"r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
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"r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
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"r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
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"r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",
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"r64", "r65", "r66", "r67", "r68", "r69", "r70", "r71",
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"r72", "r73", "r74", "r75", "r76", "r77", "r78", "r79",
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"r80", "r81", "r82", "r83", "r84", "r85", "r86", "r87",
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"r88", "r89", "r90", "r91", "r92", "r93", "r94", "r95",
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"r96", "r97", "r98", "r99", "r100", "r101", "r102", "r103",
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"r104", "r105", "r106", "r107", "r108", "r109", "r110", "r111",
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"r112", "r113", "r114", "r115", "r116", "r117", "r118", "r119",
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"r120", "r121", "r122", "r123", "r124", "r125", "r126", "r127",
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"p0", "p1", "p2", "p3", "p4", "p5", "p6", "p7",
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"p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15",
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"p16", "p17", "p18", "p19", "p20", "p21", "p22", "p23",
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"p24", "p25", "p26", "p27", "p28", "p29", "p30", "p31",
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"p32", "p33", "p34", "p35", "p36", "p37", "p38", "p39",
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"p40", "p41", "p42", "p43", "p44", "p45", "p46", "p47",
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"p48", "p49", "p50", "p51", "p52", "p53", "p54", "p55",
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"p56", "p57", "p58", "p59", "p60", "p61", "p62", "p63",
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};
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struct ia64_frame_cache
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{
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CORE_ADDR base; /* frame pointer base for frame */
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CORE_ADDR pc; /* function start pc for frame */
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CORE_ADDR saved_sp; /* stack pointer for frame */
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CORE_ADDR bsp; /* points at r32 for the current frame */
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CORE_ADDR cfm; /* cfm value for current frame */
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CORE_ADDR prev_cfm; /* cfm value for previous frame */
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int frameless;
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int sof; /* Size of frame (decoded from cfm value) */
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int sol; /* Size of locals (decoded from cfm value) */
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int sor; /* Number of rotating registers. (decoded from cfm value) */
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CORE_ADDR after_prologue;
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/* Address of first instruction after the last
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prologue instruction; Note that there may
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be instructions from the function's body
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intermingled with the prologue. */
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int mem_stack_frame_size;
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/* Size of the memory stack frame (may be zero),
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or -1 if it has not been determined yet. */
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int fp_reg; /* Register number (if any) used a frame pointer
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for this frame. 0 if no register is being used
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as the frame pointer. */
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/* Saved registers. */
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CORE_ADDR saved_regs[NUM_IA64_RAW_REGS];
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};
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struct gdbarch_tdep
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{
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int os_ident; /* From the ELF header, one of the ELFOSABI_
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constants: ELFOSABI_LINUX, ELFOSABI_AIX,
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etc. */
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CORE_ADDR (*sigcontext_register_address) (CORE_ADDR, int);
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/* OS specific function which, given a frame address
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and register number, returns the offset to the
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given register from the start of the frame. */
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CORE_ADDR (*find_global_pointer) (CORE_ADDR);
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};
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#define SIGCONTEXT_REGISTER_ADDRESS \
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(gdbarch_tdep (current_gdbarch)->sigcontext_register_address)
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#define FIND_GLOBAL_POINTER \
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(gdbarch_tdep (current_gdbarch)->find_global_pointer)
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int
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ia64_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
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struct reggroup *group)
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{
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int vector_p;
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int float_p;
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int raw_p;
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if (group == all_reggroup)
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return 1;
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vector_p = TYPE_VECTOR (register_type (gdbarch, regnum));
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float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT;
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raw_p = regnum < NUM_IA64_RAW_REGS;
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if (group == float_reggroup)
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return float_p;
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if (group == vector_reggroup)
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return vector_p;
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if (group == general_reggroup)
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return (!vector_p && !float_p);
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if (group == save_reggroup || group == restore_reggroup)
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return raw_p;
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||
return 0;
|
||
}
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static const char *
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ia64_register_name (int reg)
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{
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return ia64_register_names[reg];
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}
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struct type *
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ia64_register_type (struct gdbarch *arch, int reg)
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{
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||
if (reg >= IA64_FR0_REGNUM && reg <= IA64_FR127_REGNUM)
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||
return builtin_type_ia64_ext;
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else
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||
return builtin_type_long;
|
||
}
|
||
|
||
static int
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||
ia64_dwarf_reg_to_regnum (int reg)
|
||
{
|
||
if (reg >= IA64_GR32_REGNUM && reg <= IA64_GR127_REGNUM)
|
||
return V32_REGNUM + (reg - IA64_GR32_REGNUM);
|
||
return reg;
|
||
}
|
||
|
||
static int
|
||
floatformat_valid (fmt, from)
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||
const struct floatformat *fmt;
|
||
const char *from;
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
const struct floatformat floatformat_ia64_ext =
|
||
{
|
||
floatformat_little, 82, 0, 1, 17, 65535, 0x1ffff, 18, 64,
|
||
floatformat_intbit_yes, "floatformat_ia64_ext", floatformat_valid
|
||
};
|
||
|
||
|
||
/* Read the given register from a sigcontext structure in the
|
||
specified frame. */
|
||
|
||
static CORE_ADDR
|
||
read_sigcontext_register (struct frame_info *frame, int regnum)
|
||
{
|
||
CORE_ADDR regaddr;
|
||
|
||
if (frame == NULL)
|
||
internal_error (__FILE__, __LINE__,
|
||
"read_sigcontext_register: NULL frame");
|
||
if (!(get_frame_type (frame) == SIGTRAMP_FRAME))
|
||
internal_error (__FILE__, __LINE__,
|
||
"read_sigcontext_register: frame not a signal trampoline");
|
||
if (SIGCONTEXT_REGISTER_ADDRESS == 0)
|
||
internal_error (__FILE__, __LINE__,
|
||
"read_sigcontext_register: SIGCONTEXT_REGISTER_ADDRESS is 0");
|
||
|
||
regaddr = SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), regnum);
|
||
if (regaddr)
|
||
return read_memory_integer (regaddr, register_size (current_gdbarch, regnum));
|
||
else
|
||
internal_error (__FILE__, __LINE__,
|
||
"read_sigcontext_register: Register %d not in struct sigcontext", regnum);
|
||
}
|
||
|
||
/* Extract ``len'' bits from an instruction bundle starting at
|
||
bit ``from''. */
|
||
|
||
static long long
|
||
extract_bit_field (char *bundle, int from, int len)
|
||
{
|
||
long long result = 0LL;
|
||
int to = from + len;
|
||
int from_byte = from / 8;
|
||
int to_byte = to / 8;
|
||
unsigned char *b = (unsigned char *) bundle;
|
||
unsigned char c;
|
||
int lshift;
|
||
int i;
|
||
|
||
c = b[from_byte];
|
||
if (from_byte == to_byte)
|
||
c = ((unsigned char) (c << (8 - to % 8))) >> (8 - to % 8);
|
||
result = c >> (from % 8);
|
||
lshift = 8 - (from % 8);
|
||
|
||
for (i = from_byte+1; i < to_byte; i++)
|
||
{
|
||
result |= ((long long) b[i]) << lshift;
|
||
lshift += 8;
|
||
}
|
||
|
||
if (from_byte < to_byte && (to % 8 != 0))
|
||
{
|
||
c = b[to_byte];
|
||
c = ((unsigned char) (c << (8 - to % 8))) >> (8 - to % 8);
|
||
result |= ((long long) c) << lshift;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/* Replace the specified bits in an instruction bundle */
|
||
|
||
static void
|
||
replace_bit_field (char *bundle, long long val, int from, int len)
|
||
{
|
||
int to = from + len;
|
||
int from_byte = from / 8;
|
||
int to_byte = to / 8;
|
||
unsigned char *b = (unsigned char *) bundle;
|
||
unsigned char c;
|
||
|
||
if (from_byte == to_byte)
|
||
{
|
||
unsigned char left, right;
|
||
c = b[from_byte];
|
||
left = (c >> (to % 8)) << (to % 8);
|
||
right = ((unsigned char) (c << (8 - from % 8))) >> (8 - from % 8);
|
||
c = (unsigned char) (val & 0xff);
|
||
c = (unsigned char) (c << (from % 8 + 8 - to % 8)) >> (8 - to % 8);
|
||
c |= right | left;
|
||
b[from_byte] = c;
|
||
}
|
||
else
|
||
{
|
||
int i;
|
||
c = b[from_byte];
|
||
c = ((unsigned char) (c << (8 - from % 8))) >> (8 - from % 8);
|
||
c = c | (val << (from % 8));
|
||
b[from_byte] = c;
|
||
val >>= 8 - from % 8;
|
||
|
||
for (i = from_byte+1; i < to_byte; i++)
|
||
{
|
||
c = val & 0xff;
|
||
val >>= 8;
|
||
b[i] = c;
|
||
}
|
||
|
||
if (to % 8 != 0)
|
||
{
|
||
unsigned char cv = (unsigned char) val;
|
||
c = b[to_byte];
|
||
c = c >> (to % 8) << (to % 8);
|
||
c |= ((unsigned char) (cv << (8 - to % 8))) >> (8 - to % 8);
|
||
b[to_byte] = c;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Return the contents of slot N (for N = 0, 1, or 2) in
|
||
and instruction bundle */
|
||
|
||
static long long
|
||
slotN_contents (char *bundle, int slotnum)
|
||
{
|
||
return extract_bit_field (bundle, 5+41*slotnum, 41);
|
||
}
|
||
|
||
/* Store an instruction in an instruction bundle */
|
||
|
||
static void
|
||
replace_slotN_contents (char *bundle, long long instr, int slotnum)
|
||
{
|
||
replace_bit_field (bundle, instr, 5+41*slotnum, 41);
|
||
}
|
||
|
||
static enum instruction_type template_encoding_table[32][3] =
|
||
{
|
||
{ M, I, I }, /* 00 */
|
||
{ M, I, I }, /* 01 */
|
||
{ M, I, I }, /* 02 */
|
||
{ M, I, I }, /* 03 */
|
||
{ M, L, X }, /* 04 */
|
||
{ M, L, X }, /* 05 */
|
||
{ undefined, undefined, undefined }, /* 06 */
|
||
{ undefined, undefined, undefined }, /* 07 */
|
||
{ M, M, I }, /* 08 */
|
||
{ M, M, I }, /* 09 */
|
||
{ M, M, I }, /* 0A */
|
||
{ M, M, I }, /* 0B */
|
||
{ M, F, I }, /* 0C */
|
||
{ M, F, I }, /* 0D */
|
||
{ M, M, F }, /* 0E */
|
||
{ M, M, F }, /* 0F */
|
||
{ M, I, B }, /* 10 */
|
||
{ M, I, B }, /* 11 */
|
||
{ M, B, B }, /* 12 */
|
||
{ M, B, B }, /* 13 */
|
||
{ undefined, undefined, undefined }, /* 14 */
|
||
{ undefined, undefined, undefined }, /* 15 */
|
||
{ B, B, B }, /* 16 */
|
||
{ B, B, B }, /* 17 */
|
||
{ M, M, B }, /* 18 */
|
||
{ M, M, B }, /* 19 */
|
||
{ undefined, undefined, undefined }, /* 1A */
|
||
{ undefined, undefined, undefined }, /* 1B */
|
||
{ M, F, B }, /* 1C */
|
||
{ M, F, B }, /* 1D */
|
||
{ undefined, undefined, undefined }, /* 1E */
|
||
{ undefined, undefined, undefined }, /* 1F */
|
||
};
|
||
|
||
/* Fetch and (partially) decode an instruction at ADDR and return the
|
||
address of the next instruction to fetch. */
|
||
|
||
static CORE_ADDR
|
||
fetch_instruction (CORE_ADDR addr, instruction_type *it, long long *instr)
|
||
{
|
||
char bundle[BUNDLE_LEN];
|
||
int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER;
|
||
long long template;
|
||
int val;
|
||
|
||
/* Warn about slot numbers greater than 2. We used to generate
|
||
an error here on the assumption that the user entered an invalid
|
||
address. But, sometimes GDB itself requests an invalid address.
|
||
This can (easily) happen when execution stops in a function for
|
||
which there are no symbols. The prologue scanner will attempt to
|
||
find the beginning of the function - if the nearest symbol
|
||
happens to not be aligned on a bundle boundary (16 bytes), the
|
||
resulting starting address will cause GDB to think that the slot
|
||
number is too large.
|
||
|
||
So we warn about it and set the slot number to zero. It is
|
||
not necessarily a fatal condition, particularly if debugging
|
||
at the assembly language level. */
|
||
if (slotnum > 2)
|
||
{
|
||
warning ("Can't fetch instructions for slot numbers greater than 2.\n"
|
||
"Using slot 0 instead");
|
||
slotnum = 0;
|
||
}
|
||
|
||
addr &= ~0x0f;
|
||
|
||
val = target_read_memory (addr, bundle, BUNDLE_LEN);
|
||
|
||
if (val != 0)
|
||
return 0;
|
||
|
||
*instr = slotN_contents (bundle, slotnum);
|
||
template = extract_bit_field (bundle, 0, 5);
|
||
*it = template_encoding_table[(int)template][slotnum];
|
||
|
||
if (slotnum == 2 || (slotnum == 1 && *it == L))
|
||
addr += 16;
|
||
else
|
||
addr += (slotnum + 1) * SLOT_MULTIPLIER;
|
||
|
||
return addr;
|
||
}
|
||
|
||
/* There are 5 different break instructions (break.i, break.b,
|
||
break.m, break.f, and break.x), but they all have the same
|
||
encoding. (The five bit template in the low five bits of the
|
||
instruction bundle distinguishes one from another.)
|
||
|
||
The runtime architecture manual specifies that break instructions
|
||
used for debugging purposes must have the upper two bits of the 21
|
||
bit immediate set to a 0 and a 1 respectively. A breakpoint
|
||
instruction encodes the most significant bit of its 21 bit
|
||
immediate at bit 36 of the 41 bit instruction. The penultimate msb
|
||
is at bit 25 which leads to the pattern below.
|
||
|
||
Originally, I had this set up to do, e.g, a "break.i 0x80000" But
|
||
it turns out that 0x80000 was used as the syscall break in the early
|
||
simulators. So I changed the pattern slightly to do "break.i 0x080001"
|
||
instead. But that didn't work either (I later found out that this
|
||
pattern was used by the simulator that I was using.) So I ended up
|
||
using the pattern seen below. */
|
||
|
||
#if 0
|
||
#define IA64_BREAKPOINT 0x00002000040LL
|
||
#endif
|
||
#define IA64_BREAKPOINT 0x00003333300LL
|
||
|
||
static int
|
||
ia64_memory_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
|
||
{
|
||
char bundle[BUNDLE_LEN];
|
||
int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER;
|
||
long long instr;
|
||
int val;
|
||
int template;
|
||
|
||
if (slotnum > 2)
|
||
error("Can't insert breakpoint for slot numbers greater than 2.");
|
||
|
||
addr &= ~0x0f;
|
||
|
||
val = target_read_memory (addr, bundle, BUNDLE_LEN);
|
||
|
||
/* Check for L type instruction in 2nd slot, if present then
|
||
bump up the slot number to the 3rd slot */
|
||
template = extract_bit_field (bundle, 0, 5);
|
||
if (slotnum == 1 && template_encoding_table[template][1] == L)
|
||
{
|
||
slotnum = 2;
|
||
}
|
||
|
||
instr = slotN_contents (bundle, slotnum);
|
||
memcpy(contents_cache, &instr, sizeof(instr));
|
||
replace_slotN_contents (bundle, IA64_BREAKPOINT, slotnum);
|
||
if (val == 0)
|
||
target_write_memory (addr, bundle, BUNDLE_LEN);
|
||
|
||
return val;
|
||
}
|
||
|
||
static int
|
||
ia64_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
|
||
{
|
||
char bundle[BUNDLE_LEN];
|
||
int slotnum = (addr & 0x0f) / SLOT_MULTIPLIER;
|
||
long long instr;
|
||
int val;
|
||
int template;
|
||
|
||
addr &= ~0x0f;
|
||
|
||
val = target_read_memory (addr, bundle, BUNDLE_LEN);
|
||
|
||
/* Check for L type instruction in 2nd slot, if present then
|
||
bump up the slot number to the 3rd slot */
|
||
template = extract_bit_field (bundle, 0, 5);
|
||
if (slotnum == 1 && template_encoding_table[template][1] == L)
|
||
{
|
||
slotnum = 2;
|
||
}
|
||
|
||
memcpy (&instr, contents_cache, sizeof instr);
|
||
replace_slotN_contents (bundle, instr, slotnum);
|
||
if (val == 0)
|
||
target_write_memory (addr, bundle, BUNDLE_LEN);
|
||
|
||
return val;
|
||
}
|
||
|
||
/* We don't really want to use this, but remote.c needs to call it in order
|
||
to figure out if Z-packets are supported or not. Oh, well. */
|
||
const unsigned char *
|
||
ia64_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
|
||
{
|
||
static unsigned char breakpoint[] =
|
||
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
||
*lenptr = sizeof (breakpoint);
|
||
#if 0
|
||
*pcptr &= ~0x0f;
|
||
#endif
|
||
return breakpoint;
|
||
}
|
||
|
||
static CORE_ADDR
|
||
ia64_read_fp (void)
|
||
{
|
||
/* We won't necessarily have a frame pointer and even if we do, it
|
||
winds up being extraordinarly messy when attempting to find the
|
||
frame chain. So for the purposes of creating frames (which is
|
||
all deprecated_read_fp() is used for), simply use the stack
|
||
pointer value instead. */
|
||
gdb_assert (SP_REGNUM >= 0);
|
||
return read_register (SP_REGNUM);
|
||
}
|
||
|
||
static CORE_ADDR
|
||
ia64_read_pc (ptid_t ptid)
|
||
{
|
||
CORE_ADDR psr_value = read_register_pid (IA64_PSR_REGNUM, ptid);
|
||
CORE_ADDR pc_value = read_register_pid (IA64_IP_REGNUM, ptid);
|
||
int slot_num = (psr_value >> 41) & 3;
|
||
|
||
return pc_value | (slot_num * SLOT_MULTIPLIER);
|
||
}
|
||
|
||
static void
|
||
ia64_write_pc (CORE_ADDR new_pc, ptid_t ptid)
|
||
{
|
||
int slot_num = (int) (new_pc & 0xf) / SLOT_MULTIPLIER;
|
||
CORE_ADDR psr_value = read_register_pid (IA64_PSR_REGNUM, ptid);
|
||
psr_value &= ~(3LL << 41);
|
||
psr_value |= (CORE_ADDR)(slot_num & 0x3) << 41;
|
||
|
||
new_pc &= ~0xfLL;
|
||
|
||
write_register_pid (IA64_PSR_REGNUM, psr_value, ptid);
|
||
write_register_pid (IA64_IP_REGNUM, new_pc, ptid);
|
||
}
|
||
|
||
#define IS_NaT_COLLECTION_ADDR(addr) ((((addr) >> 3) & 0x3f) == 0x3f)
|
||
|
||
/* Returns the address of the slot that's NSLOTS slots away from
|
||
the address ADDR. NSLOTS may be positive or negative. */
|
||
static CORE_ADDR
|
||
rse_address_add(CORE_ADDR addr, int nslots)
|
||
{
|
||
CORE_ADDR new_addr;
|
||
int mandatory_nat_slots = nslots / 63;
|
||
int direction = nslots < 0 ? -1 : 1;
|
||
|
||
new_addr = addr + 8 * (nslots + mandatory_nat_slots);
|
||
|
||
if ((new_addr >> 9) != ((addr + 8 * 64 * mandatory_nat_slots) >> 9))
|
||
new_addr += 8 * direction;
|
||
|
||
if (IS_NaT_COLLECTION_ADDR(new_addr))
|
||
new_addr += 8 * direction;
|
||
|
||
return new_addr;
|
||
}
|
||
|
||
static void
|
||
ia64_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
|
||
int regnum, void *buf)
|
||
{
|
||
if (regnum >= V32_REGNUM && regnum <= V127_REGNUM)
|
||
{
|
||
ULONGEST bsp;
|
||
ULONGEST cfm;
|
||
CORE_ADDR reg;
|
||
regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
|
||
regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
|
||
|
||
/* The bsp points at the end of the register frame so we
|
||
subtract the size of frame from it to get start of register frame. */
|
||
bsp = rse_address_add (bsp, -(cfm & 0x7f));
|
||
|
||
if ((cfm & 0x7f) > regnum - V32_REGNUM)
|
||
{
|
||
ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
|
||
reg = read_memory_integer ((CORE_ADDR)reg_addr, 8);
|
||
store_unsigned_integer (buf, register_size (current_gdbarch, regnum), reg);
|
||
}
|
||
else
|
||
store_unsigned_integer (buf, register_size (current_gdbarch, regnum), 0);
|
||
}
|
||
else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
|
||
{
|
||
ULONGEST unatN_val;
|
||
ULONGEST unat;
|
||
regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat);
|
||
unatN_val = (unat & (1LL << (regnum - IA64_NAT0_REGNUM))) != 0;
|
||
store_unsigned_integer (buf, register_size (current_gdbarch, regnum), unatN_val);
|
||
}
|
||
else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
|
||
{
|
||
ULONGEST natN_val = 0;
|
||
ULONGEST bsp;
|
||
ULONGEST cfm;
|
||
CORE_ADDR gr_addr = 0;
|
||
regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
|
||
regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
|
||
|
||
/* The bsp points at the end of the register frame so we
|
||
subtract the size of frame from it to get start of register frame. */
|
||
bsp = rse_address_add (bsp, -(cfm & 0x7f));
|
||
|
||
if ((cfm & 0x7f) > regnum - V32_REGNUM)
|
||
gr_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
|
||
|
||
if (gr_addr != 0)
|
||
{
|
||
/* Compute address of nat collection bits. */
|
||
CORE_ADDR nat_addr = gr_addr | 0x1f8;
|
||
CORE_ADDR nat_collection;
|
||
int nat_bit;
|
||
/* If our nat collection address is bigger than bsp, we have to get
|
||
the nat collection from rnat. Otherwise, we fetch the nat
|
||
collection from the computed address. */
|
||
if (nat_addr >= bsp)
|
||
regcache_cooked_read_unsigned (regcache, IA64_RNAT_REGNUM, &nat_collection);
|
||
else
|
||
nat_collection = read_memory_integer (nat_addr, 8);
|
||
nat_bit = (gr_addr >> 3) & 0x3f;
|
||
natN_val = (nat_collection >> nat_bit) & 1;
|
||
}
|
||
|
||
store_unsigned_integer (buf, register_size (current_gdbarch, regnum), natN_val);
|
||
}
|
||
else if (regnum == VBOF_REGNUM)
|
||
{
|
||
/* A virtual register frame start is provided for user convenience.
|
||
It can be calculated as the bsp - sof (sizeof frame). */
|
||
ULONGEST bsp, vbsp;
|
||
ULONGEST cfm;
|
||
CORE_ADDR reg;
|
||
regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
|
||
regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
|
||
|
||
/* The bsp points at the end of the register frame so we
|
||
subtract the size of frame from it to get beginning of frame. */
|
||
vbsp = rse_address_add (bsp, -(cfm & 0x7f));
|
||
store_unsigned_integer (buf, register_size (current_gdbarch, regnum), vbsp);
|
||
}
|
||
else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
|
||
{
|
||
ULONGEST pr;
|
||
ULONGEST cfm;
|
||
ULONGEST prN_val;
|
||
CORE_ADDR reg;
|
||
regcache_cooked_read_unsigned (regcache, IA64_PR_REGNUM, &pr);
|
||
regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
|
||
|
||
if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
|
||
{
|
||
/* Fetch predicate register rename base from current frame
|
||
marker for this frame. */
|
||
int rrb_pr = (cfm >> 32) & 0x3f;
|
||
|
||
/* Adjust the register number to account for register rotation. */
|
||
regnum = VP16_REGNUM
|
||
+ ((regnum - VP16_REGNUM) + rrb_pr) % 48;
|
||
}
|
||
prN_val = (pr & (1LL << (regnum - VP0_REGNUM))) != 0;
|
||
store_unsigned_integer (buf, register_size (current_gdbarch, regnum), prN_val);
|
||
}
|
||
else
|
||
memset (buf, 0, register_size (current_gdbarch, regnum));
|
||
}
|
||
|
||
static void
|
||
ia64_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
|
||
int regnum, const void *buf)
|
||
{
|
||
if (regnum >= V32_REGNUM && regnum <= V127_REGNUM)
|
||
{
|
||
ULONGEST bsp;
|
||
ULONGEST cfm;
|
||
CORE_ADDR reg;
|
||
regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
|
||
regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
|
||
|
||
bsp = rse_address_add (bsp, -(cfm & 0x7f));
|
||
|
||
if ((cfm & 0x7f) > regnum - V32_REGNUM)
|
||
{
|
||
ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
|
||
write_memory (reg_addr, (void *)buf, 8);
|
||
}
|
||
}
|
||
else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
|
||
{
|
||
ULONGEST unatN_val, unat, unatN_mask;
|
||
regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat);
|
||
unatN_val = extract_unsigned_integer (buf, register_size (current_gdbarch, regnum));
|
||
unatN_mask = (1LL << (regnum - IA64_NAT0_REGNUM));
|
||
if (unatN_val == 0)
|
||
unat &= ~unatN_mask;
|
||
else if (unatN_val == 1)
|
||
unat |= unatN_mask;
|
||
regcache_cooked_write_unsigned (regcache, IA64_UNAT_REGNUM, unat);
|
||
}
|
||
else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
|
||
{
|
||
ULONGEST natN_val;
|
||
ULONGEST bsp;
|
||
ULONGEST cfm;
|
||
CORE_ADDR gr_addr = 0;
|
||
regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
|
||
regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
|
||
|
||
/* The bsp points at the end of the register frame so we
|
||
subtract the size of frame from it to get start of register frame. */
|
||
bsp = rse_address_add (bsp, -(cfm & 0x7f));
|
||
|
||
if ((cfm & 0x7f) > regnum - V32_REGNUM)
|
||
gr_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
|
||
|
||
natN_val = extract_unsigned_integer (buf, register_size (current_gdbarch, regnum));
|
||
|
||
if (gr_addr != 0 && (natN_val == 0 || natN_val == 1))
|
||
{
|
||
/* Compute address of nat collection bits. */
|
||
CORE_ADDR nat_addr = gr_addr | 0x1f8;
|
||
CORE_ADDR nat_collection;
|
||
int natN_bit = (gr_addr >> 3) & 0x3f;
|
||
ULONGEST natN_mask = (1LL << natN_bit);
|
||
/* If our nat collection address is bigger than bsp, we have to get
|
||
the nat collection from rnat. Otherwise, we fetch the nat
|
||
collection from the computed address. */
|
||
if (nat_addr >= bsp)
|
||
{
|
||
regcache_cooked_read_unsigned (regcache, IA64_RNAT_REGNUM, &nat_collection);
|
||
if (natN_val)
|
||
nat_collection |= natN_mask;
|
||
else
|
||
nat_collection &= ~natN_mask;
|
||
regcache_cooked_write_unsigned (regcache, IA64_RNAT_REGNUM, nat_collection);
|
||
}
|
||
else
|
||
{
|
||
char nat_buf[8];
|
||
nat_collection = read_memory_integer (nat_addr, 8);
|
||
if (natN_val)
|
||
nat_collection |= natN_mask;
|
||
else
|
||
nat_collection &= ~natN_mask;
|
||
store_unsigned_integer (nat_buf, register_size (current_gdbarch, regnum), nat_collection);
|
||
write_memory (nat_addr, nat_buf, 8);
|
||
}
|
||
}
|
||
}
|
||
else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
|
||
{
|
||
ULONGEST pr;
|
||
ULONGEST cfm;
|
||
ULONGEST prN_val;
|
||
ULONGEST prN_mask;
|
||
|
||
regcache_cooked_read_unsigned (regcache, IA64_PR_REGNUM, &pr);
|
||
regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
|
||
|
||
if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
|
||
{
|
||
/* Fetch predicate register rename base from current frame
|
||
marker for this frame. */
|
||
int rrb_pr = (cfm >> 32) & 0x3f;
|
||
|
||
/* Adjust the register number to account for register rotation. */
|
||
regnum = VP16_REGNUM
|
||
+ ((regnum - VP16_REGNUM) + rrb_pr) % 48;
|
||
}
|
||
prN_val = extract_unsigned_integer (buf, register_size (current_gdbarch, regnum));
|
||
prN_mask = (1LL << (regnum - VP0_REGNUM));
|
||
if (prN_val == 0)
|
||
pr &= ~prN_mask;
|
||
else if (prN_val == 1)
|
||
pr |= prN_mask;
|
||
regcache_cooked_write_unsigned (regcache, IA64_PR_REGNUM, pr);
|
||
}
|
||
}
|
||
|
||
/* The ia64 needs to convert between various ieee floating-point formats
|
||
and the special ia64 floating point register format. */
|
||
|
||
static int
|
||
ia64_convert_register_p (int regno, struct type *type)
|
||
{
|
||
return (regno >= IA64_FR0_REGNUM && regno <= IA64_FR127_REGNUM);
|
||
}
|
||
|
||
static void
|
||
ia64_register_to_value (struct frame_info *frame, int regnum,
|
||
struct type *valtype, void *out)
|
||
{
|
||
char in[MAX_REGISTER_SIZE];
|
||
frame_register_read (frame, regnum, in);
|
||
convert_typed_floating (in, builtin_type_ia64_ext, out, valtype);
|
||
}
|
||
|
||
static void
|
||
ia64_value_to_register (struct frame_info *frame, int regnum,
|
||
struct type *valtype, const void *in)
|
||
{
|
||
char out[MAX_REGISTER_SIZE];
|
||
convert_typed_floating (in, valtype, out, builtin_type_ia64_ext);
|
||
put_frame_register (frame, regnum, out);
|
||
}
|
||
|
||
|
||
/* Limit the number of skipped non-prologue instructions since examining
|
||
of the prologue is expensive. */
|
||
static int max_skip_non_prologue_insns = 40;
|
||
|
||
/* Given PC representing the starting address of a function, and
|
||
LIM_PC which is the (sloppy) limit to which to scan when looking
|
||
for a prologue, attempt to further refine this limit by using
|
||
the line data in the symbol table. If successful, a better guess
|
||
on where the prologue ends is returned, otherwise the previous
|
||
value of lim_pc is returned. TRUST_LIMIT is a pointer to a flag
|
||
which will be set to indicate whether the returned limit may be
|
||
used with no further scanning in the event that the function is
|
||
frameless. */
|
||
|
||
static CORE_ADDR
|
||
refine_prologue_limit (CORE_ADDR pc, CORE_ADDR lim_pc, int *trust_limit)
|
||
{
|
||
struct symtab_and_line prologue_sal;
|
||
CORE_ADDR start_pc = pc;
|
||
|
||
/* Start off not trusting the limit. */
|
||
*trust_limit = 0;
|
||
|
||
prologue_sal = find_pc_line (pc, 0);
|
||
if (prologue_sal.line != 0)
|
||
{
|
||
int i;
|
||
CORE_ADDR addr = prologue_sal.end;
|
||
|
||
/* Handle the case in which compiler's optimizer/scheduler
|
||
has moved instructions into the prologue. We scan ahead
|
||
in the function looking for address ranges whose corresponding
|
||
line number is less than or equal to the first one that we
|
||
found for the function. (It can be less than when the
|
||
scheduler puts a body instruction before the first prologue
|
||
instruction.) */
|
||
for (i = 2 * max_skip_non_prologue_insns;
|
||
i > 0 && (lim_pc == 0 || addr < lim_pc);
|
||
i--)
|
||
{
|
||
struct symtab_and_line sal;
|
||
|
||
sal = find_pc_line (addr, 0);
|
||
if (sal.line == 0)
|
||
break;
|
||
if (sal.line <= prologue_sal.line
|
||
&& sal.symtab == prologue_sal.symtab)
|
||
{
|
||
prologue_sal = sal;
|
||
}
|
||
addr = sal.end;
|
||
}
|
||
|
||
if (lim_pc == 0 || prologue_sal.end < lim_pc)
|
||
{
|
||
lim_pc = prologue_sal.end;
|
||
if (start_pc == get_pc_function_start (lim_pc))
|
||
*trust_limit = 1;
|
||
}
|
||
}
|
||
return lim_pc;
|
||
}
|
||
|
||
#define isScratch(_regnum_) ((_regnum_) == 2 || (_regnum_) == 3 \
|
||
|| (8 <= (_regnum_) && (_regnum_) <= 11) \
|
||
|| (14 <= (_regnum_) && (_regnum_) <= 31))
|
||
#define imm9(_instr_) \
|
||
( ((((_instr_) & 0x01000000000LL) ? -1 : 0) << 8) \
|
||
| (((_instr_) & 0x00008000000LL) >> 20) \
|
||
| (((_instr_) & 0x00000001fc0LL) >> 6))
|
||
|
||
/* Allocate and initialize a frame cache. */
|
||
|
||
static struct ia64_frame_cache *
|
||
ia64_alloc_frame_cache (void)
|
||
{
|
||
struct ia64_frame_cache *cache;
|
||
int i;
|
||
|
||
cache = FRAME_OBSTACK_ZALLOC (struct ia64_frame_cache);
|
||
|
||
/* Base address. */
|
||
cache->base = 0;
|
||
cache->pc = 0;
|
||
cache->cfm = 0;
|
||
cache->prev_cfm = 0;
|
||
cache->sof = 0;
|
||
cache->sol = 0;
|
||
cache->sor = 0;
|
||
cache->bsp = 0;
|
||
cache->fp_reg = 0;
|
||
cache->frameless = 1;
|
||
|
||
for (i = 0; i < NUM_IA64_RAW_REGS; i++)
|
||
cache->saved_regs[i] = 0;
|
||
|
||
return cache;
|
||
}
|
||
|
||
static CORE_ADDR
|
||
examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *next_frame, struct ia64_frame_cache *cache)
|
||
{
|
||
CORE_ADDR next_pc;
|
||
CORE_ADDR last_prologue_pc = pc;
|
||
instruction_type it;
|
||
long long instr;
|
||
int cfm_reg = 0;
|
||
int ret_reg = 0;
|
||
int fp_reg = 0;
|
||
int unat_save_reg = 0;
|
||
int pr_save_reg = 0;
|
||
int mem_stack_frame_size = 0;
|
||
int spill_reg = 0;
|
||
CORE_ADDR spill_addr = 0;
|
||
char instores[8];
|
||
char infpstores[8];
|
||
char reg_contents[256];
|
||
int trust_limit;
|
||
int frameless = 1;
|
||
int i;
|
||
CORE_ADDR addr;
|
||
char buf[8];
|
||
CORE_ADDR bof, sor, sol, sof, cfm, rrb_gr;
|
||
|
||
memset (instores, 0, sizeof instores);
|
||
memset (infpstores, 0, sizeof infpstores);
|
||
memset (reg_contents, 0, sizeof reg_contents);
|
||
|
||
if (cache->after_prologue != 0
|
||
&& cache->after_prologue <= lim_pc)
|
||
return cache->after_prologue;
|
||
|
||
lim_pc = refine_prologue_limit (pc, lim_pc, &trust_limit);
|
||
next_pc = fetch_instruction (pc, &it, &instr);
|
||
|
||
/* We want to check if we have a recognizable function start before we
|
||
look ahead for a prologue. */
|
||
if (pc < lim_pc && next_pc
|
||
&& it == M && ((instr & 0x1ee0000003fLL) == 0x02c00000000LL))
|
||
{
|
||
/* alloc - start of a regular function. */
|
||
int sor = (int) ((instr & 0x00078000000LL) >> 27);
|
||
int sol = (int) ((instr & 0x00007f00000LL) >> 20);
|
||
int sof = (int) ((instr & 0x000000fe000LL) >> 13);
|
||
int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
|
||
|
||
/* Verify that the current cfm matches what we think is the
|
||
function start. If we have somehow jumped within a function,
|
||
we do not want to interpret the prologue and calculate the
|
||
addresses of various registers such as the return address.
|
||
We will instead treat the frame as frameless. */
|
||
if (!next_frame ||
|
||
(sof == (cache->cfm & 0x7f) &&
|
||
sol == ((cache->cfm >> 7) & 0x7f)))
|
||
frameless = 0;
|
||
|
||
cfm_reg = rN;
|
||
last_prologue_pc = next_pc;
|
||
pc = next_pc;
|
||
}
|
||
else
|
||
{
|
||
/* Look for a leaf routine. */
|
||
if (pc < lim_pc && next_pc
|
||
&& (it == I || it == M)
|
||
&& ((instr & 0x1ee00000000LL) == 0x10800000000LL))
|
||
{
|
||
/* adds rN = imm14, rM (or mov rN, rM when imm14 is 0) */
|
||
int imm = (int) ((((instr & 0x01000000000LL) ? -1 : 0) << 13)
|
||
| ((instr & 0x001f8000000LL) >> 20)
|
||
| ((instr & 0x000000fe000LL) >> 13));
|
||
int rM = (int) ((instr & 0x00007f00000LL) >> 20);
|
||
int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
|
||
int qp = (int) (instr & 0x0000000003fLL);
|
||
if (qp == 0 && rN == 2 && imm == 0 && rM == 12 && fp_reg == 0)
|
||
{
|
||
/* mov r2, r12 - beginning of leaf routine */
|
||
fp_reg = rN;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
}
|
||
|
||
/* If we don't recognize a regular function or leaf routine, we are
|
||
done. */
|
||
if (!fp_reg)
|
||
{
|
||
pc = lim_pc;
|
||
if (trust_limit)
|
||
last_prologue_pc = lim_pc;
|
||
}
|
||
}
|
||
|
||
/* Loop, looking for prologue instructions, keeping track of
|
||
where preserved registers were spilled. */
|
||
while (pc < lim_pc)
|
||
{
|
||
next_pc = fetch_instruction (pc, &it, &instr);
|
||
if (next_pc == 0)
|
||
break;
|
||
|
||
if (it == B && ((instr & 0x1e1f800003f) != 0x04000000000))
|
||
{
|
||
/* Exit loop upon hitting a non-nop branch instruction. */
|
||
if (trust_limit)
|
||
lim_pc = pc;
|
||
break;
|
||
}
|
||
else if (((instr & 0x3fLL) != 0LL) &&
|
||
(frameless || ret_reg != 0))
|
||
{
|
||
/* Exit loop upon hitting a predicated instruction if
|
||
we already have the return register or if we are frameless. */
|
||
if (trust_limit)
|
||
lim_pc = pc;
|
||
break;
|
||
}
|
||
else if (it == I && ((instr & 0x1eff8000000LL) == 0x00188000000LL))
|
||
{
|
||
/* Move from BR */
|
||
int b2 = (int) ((instr & 0x0000000e000LL) >> 13);
|
||
int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
|
||
int qp = (int) (instr & 0x0000000003f);
|
||
|
||
if (qp == 0 && b2 == 0 && rN >= 32 && ret_reg == 0)
|
||
{
|
||
ret_reg = rN;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
}
|
||
else if ((it == I || it == M)
|
||
&& ((instr & 0x1ee00000000LL) == 0x10800000000LL))
|
||
{
|
||
/* adds rN = imm14, rM (or mov rN, rM when imm14 is 0) */
|
||
int imm = (int) ((((instr & 0x01000000000LL) ? -1 : 0) << 13)
|
||
| ((instr & 0x001f8000000LL) >> 20)
|
||
| ((instr & 0x000000fe000LL) >> 13));
|
||
int rM = (int) ((instr & 0x00007f00000LL) >> 20);
|
||
int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
|
||
int qp = (int) (instr & 0x0000000003fLL);
|
||
|
||
if (qp == 0 && rN >= 32 && imm == 0 && rM == 12 && fp_reg == 0)
|
||
{
|
||
/* mov rN, r12 */
|
||
fp_reg = rN;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
else if (qp == 0 && rN == 12 && rM == 12)
|
||
{
|
||
/* adds r12, -mem_stack_frame_size, r12 */
|
||
mem_stack_frame_size -= imm;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
else if (qp == 0 && rN == 2
|
||
&& ((rM == fp_reg && fp_reg != 0) || rM == 12))
|
||
{
|
||
char buf[MAX_REGISTER_SIZE];
|
||
CORE_ADDR saved_sp = 0;
|
||
/* adds r2, spilloffset, rFramePointer
|
||
or
|
||
adds r2, spilloffset, r12
|
||
|
||
Get ready for stf.spill or st8.spill instructions.
|
||
The address to start spilling at is loaded into r2.
|
||
FIXME: Why r2? That's what gcc currently uses; it
|
||
could well be different for other compilers. */
|
||
|
||
/* Hmm... whether or not this will work will depend on
|
||
where the pc is. If it's still early in the prologue
|
||
this'll be wrong. FIXME */
|
||
if (next_frame)
|
||
{
|
||
frame_unwind_register (next_frame, sp_regnum, buf);
|
||
saved_sp = extract_unsigned_integer (buf, 8);
|
||
}
|
||
spill_addr = saved_sp
|
||
+ (rM == 12 ? 0 : mem_stack_frame_size)
|
||
+ imm;
|
||
spill_reg = rN;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
else if (qp == 0 && rM >= 32 && rM < 40 && !instores[rM] &&
|
||
rN < 256 && imm == 0)
|
||
{
|
||
/* mov rN, rM where rM is an input register */
|
||
reg_contents[rN] = rM;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
else if (frameless && qp == 0 && rN == fp_reg && imm == 0 &&
|
||
rM == 2)
|
||
{
|
||
/* mov r12, r2 */
|
||
last_prologue_pc = next_pc;
|
||
break;
|
||
}
|
||
}
|
||
else if (it == M
|
||
&& ( ((instr & 0x1efc0000000LL) == 0x0eec0000000LL)
|
||
|| ((instr & 0x1ffc8000000LL) == 0x0cec0000000LL) ))
|
||
{
|
||
/* stf.spill [rN] = fM, imm9
|
||
or
|
||
stf.spill [rN] = fM */
|
||
|
||
int imm = imm9(instr);
|
||
int rN = (int) ((instr & 0x00007f00000LL) >> 20);
|
||
int fM = (int) ((instr & 0x000000fe000LL) >> 13);
|
||
int qp = (int) (instr & 0x0000000003fLL);
|
||
if (qp == 0 && rN == spill_reg && spill_addr != 0
|
||
&& ((2 <= fM && fM <= 5) || (16 <= fM && fM <= 31)))
|
||
{
|
||
cache->saved_regs[IA64_FR0_REGNUM + fM] = spill_addr;
|
||
|
||
if ((instr & 0x1efc0000000) == 0x0eec0000000)
|
||
spill_addr += imm;
|
||
else
|
||
spill_addr = 0; /* last one; must be done */
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
}
|
||
else if ((it == M && ((instr & 0x1eff8000000LL) == 0x02110000000LL))
|
||
|| (it == I && ((instr & 0x1eff8000000LL) == 0x00050000000LL)) )
|
||
{
|
||
/* mov.m rN = arM
|
||
or
|
||
mov.i rN = arM */
|
||
|
||
int arM = (int) ((instr & 0x00007f00000LL) >> 20);
|
||
int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
|
||
int qp = (int) (instr & 0x0000000003fLL);
|
||
if (qp == 0 && isScratch (rN) && arM == 36 /* ar.unat */)
|
||
{
|
||
/* We have something like "mov.m r3 = ar.unat". Remember the
|
||
r3 (or whatever) and watch for a store of this register... */
|
||
unat_save_reg = rN;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
}
|
||
else if (it == I && ((instr & 0x1eff8000000LL) == 0x00198000000LL))
|
||
{
|
||
/* mov rN = pr */
|
||
int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
|
||
int qp = (int) (instr & 0x0000000003fLL);
|
||
if (qp == 0 && isScratch (rN))
|
||
{
|
||
pr_save_reg = rN;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
}
|
||
else if (it == M
|
||
&& ( ((instr & 0x1ffc8000000LL) == 0x08cc0000000LL)
|
||
|| ((instr & 0x1efc0000000LL) == 0x0acc0000000LL)))
|
||
{
|
||
/* st8 [rN] = rM
|
||
or
|
||
st8 [rN] = rM, imm9 */
|
||
int rN = (int) ((instr & 0x00007f00000LL) >> 20);
|
||
int rM = (int) ((instr & 0x000000fe000LL) >> 13);
|
||
int qp = (int) (instr & 0x0000000003fLL);
|
||
int indirect = rM < 256 ? reg_contents[rM] : 0;
|
||
if (qp == 0 && rN == spill_reg && spill_addr != 0
|
||
&& (rM == unat_save_reg || rM == pr_save_reg))
|
||
{
|
||
/* We've found a spill of either the UNAT register or the PR
|
||
register. (Well, not exactly; what we've actually found is
|
||
a spill of the register that UNAT or PR was moved to).
|
||
Record that fact and move on... */
|
||
if (rM == unat_save_reg)
|
||
{
|
||
/* Track UNAT register */
|
||
cache->saved_regs[IA64_UNAT_REGNUM] = spill_addr;
|
||
unat_save_reg = 0;
|
||
}
|
||
else
|
||
{
|
||
/* Track PR register */
|
||
cache->saved_regs[IA64_PR_REGNUM] = spill_addr;
|
||
pr_save_reg = 0;
|
||
}
|
||
if ((instr & 0x1efc0000000LL) == 0x0acc0000000LL)
|
||
/* st8 [rN] = rM, imm9 */
|
||
spill_addr += imm9(instr);
|
||
else
|
||
spill_addr = 0; /* must be done spilling */
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
else if (qp == 0 && 32 <= rM && rM < 40 && !instores[rM-32])
|
||
{
|
||
/* Allow up to one store of each input register. */
|
||
instores[rM-32] = 1;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
else if (qp == 0 && 32 <= indirect && indirect < 40 &&
|
||
!instores[indirect-32])
|
||
{
|
||
/* Allow an indirect store of an input register. */
|
||
instores[indirect-32] = 1;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
}
|
||
else if (it == M && ((instr & 0x1ff08000000LL) == 0x08c00000000LL))
|
||
{
|
||
/* One of
|
||
st1 [rN] = rM
|
||
st2 [rN] = rM
|
||
st4 [rN] = rM
|
||
st8 [rN] = rM
|
||
Note that the st8 case is handled in the clause above.
|
||
|
||
Advance over stores of input registers. One store per input
|
||
register is permitted. */
|
||
int rM = (int) ((instr & 0x000000fe000LL) >> 13);
|
||
int qp = (int) (instr & 0x0000000003fLL);
|
||
int indirect = rM < 256 ? reg_contents[rM] : 0;
|
||
if (qp == 0 && 32 <= rM && rM < 40 && !instores[rM-32])
|
||
{
|
||
instores[rM-32] = 1;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
else if (qp == 0 && 32 <= indirect && indirect < 40 &&
|
||
!instores[indirect-32])
|
||
{
|
||
/* Allow an indirect store of an input register. */
|
||
instores[indirect-32] = 1;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
}
|
||
else if (it == M && ((instr & 0x1ff88000000LL) == 0x0cc80000000LL))
|
||
{
|
||
/* Either
|
||
stfs [rN] = fM
|
||
or
|
||
stfd [rN] = fM
|
||
|
||
Advance over stores of floating point input registers. Again
|
||
one store per register is permitted */
|
||
int fM = (int) ((instr & 0x000000fe000LL) >> 13);
|
||
int qp = (int) (instr & 0x0000000003fLL);
|
||
if (qp == 0 && 8 <= fM && fM < 16 && !infpstores[fM - 8])
|
||
{
|
||
infpstores[fM-8] = 1;
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
}
|
||
else if (it == M
|
||
&& ( ((instr & 0x1ffc8000000LL) == 0x08ec0000000LL)
|
||
|| ((instr & 0x1efc0000000LL) == 0x0aec0000000LL)))
|
||
{
|
||
/* st8.spill [rN] = rM
|
||
or
|
||
st8.spill [rN] = rM, imm9 */
|
||
int rN = (int) ((instr & 0x00007f00000LL) >> 20);
|
||
int rM = (int) ((instr & 0x000000fe000LL) >> 13);
|
||
int qp = (int) (instr & 0x0000000003fLL);
|
||
if (qp == 0 && rN == spill_reg && 4 <= rM && rM <= 7)
|
||
{
|
||
/* We've found a spill of one of the preserved general purpose
|
||
regs. Record the spill address and advance the spill
|
||
register if appropriate. */
|
||
cache->saved_regs[IA64_GR0_REGNUM + rM] = spill_addr;
|
||
if ((instr & 0x1efc0000000LL) == 0x0aec0000000LL)
|
||
/* st8.spill [rN] = rM, imm9 */
|
||
spill_addr += imm9(instr);
|
||
else
|
||
spill_addr = 0; /* Done spilling */
|
||
last_prologue_pc = next_pc;
|
||
}
|
||
}
|
||
|
||
pc = next_pc;
|
||
}
|
||
|
||
/* If not frameless and we aren't called by skip_prologue, then we need to calculate
|
||
registers for the previous frame which will be needed later. */
|
||
|
||
if (!frameless && next_frame)
|
||
{
|
||
/* Extract the size of the rotating portion of the stack
|
||
frame and the register rename base from the current
|
||
frame marker. */
|
||
cfm = cache->cfm;
|
||
sor = cache->sor;
|
||
sof = cache->sof;
|
||
sol = cache->sol;
|
||
rrb_gr = (cfm >> 18) & 0x7f;
|
||
|
||
/* Find the bof (beginning of frame). */
|
||
bof = rse_address_add (cache->bsp, -sof);
|
||
|
||
for (i = 0, addr = bof;
|
||
i < sof;
|
||
i++, addr += 8)
|
||
{
|
||
if (IS_NaT_COLLECTION_ADDR (addr))
|
||
{
|
||
addr += 8;
|
||
}
|
||
if (i+32 == cfm_reg)
|
||
cache->saved_regs[IA64_CFM_REGNUM] = addr;
|
||
if (i+32 == ret_reg)
|
||
cache->saved_regs[IA64_VRAP_REGNUM] = addr;
|
||
if (i+32 == fp_reg)
|
||
cache->saved_regs[IA64_VFP_REGNUM] = addr;
|
||
}
|
||
|
||
/* For the previous argument registers we require the previous bof.
|
||
If we can't find the previous cfm, then we can do nothing. */
|
||
cfm = 0;
|
||
if (cache->saved_regs[IA64_CFM_REGNUM] != 0)
|
||
{
|
||
cfm = read_memory_integer (cache->saved_regs[IA64_CFM_REGNUM], 8);
|
||
}
|
||
else if (cfm_reg != 0)
|
||
{
|
||
frame_unwind_register (next_frame, cfm_reg, buf);
|
||
cfm = extract_unsigned_integer (buf, 8);
|
||
}
|
||
cache->prev_cfm = cfm;
|
||
|
||
if (cfm != 0)
|
||
{
|
||
sor = ((cfm >> 14) & 0xf) * 8;
|
||
sof = (cfm & 0x7f);
|
||
sol = (cfm >> 7) & 0x7f;
|
||
rrb_gr = (cfm >> 18) & 0x7f;
|
||
|
||
/* The previous bof only requires subtraction of the sol (size of locals)
|
||
due to the overlap between output and input of subsequent frames. */
|
||
bof = rse_address_add (bof, -sol);
|
||
|
||
for (i = 0, addr = bof;
|
||
i < sof;
|
||
i++, addr += 8)
|
||
{
|
||
if (IS_NaT_COLLECTION_ADDR (addr))
|
||
{
|
||
addr += 8;
|
||
}
|
||
if (i < sor)
|
||
cache->saved_regs[IA64_GR32_REGNUM + ((i + (sor - rrb_gr)) % sor)]
|
||
= addr;
|
||
else
|
||
cache->saved_regs[IA64_GR32_REGNUM + i] = addr;
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
/* Try and trust the lim_pc value whenever possible. */
|
||
if (trust_limit && lim_pc >= last_prologue_pc)
|
||
last_prologue_pc = lim_pc;
|
||
|
||
cache->frameless = frameless;
|
||
cache->after_prologue = last_prologue_pc;
|
||
cache->mem_stack_frame_size = mem_stack_frame_size;
|
||
cache->fp_reg = fp_reg;
|
||
|
||
return last_prologue_pc;
|
||
}
|
||
|
||
CORE_ADDR
|
||
ia64_skip_prologue (CORE_ADDR pc)
|
||
{
|
||
struct ia64_frame_cache cache;
|
||
cache.base = 0;
|
||
cache.after_prologue = 0;
|
||
cache.cfm = 0;
|
||
cache.bsp = 0;
|
||
|
||
/* Call examine_prologue with - as third argument since we don't have a next frame pointer to send. */
|
||
return examine_prologue (pc, pc+1024, 0, &cache);
|
||
}
|
||
|
||
|
||
/* Normal frames. */
|
||
|
||
static struct ia64_frame_cache *
|
||
ia64_frame_cache (struct frame_info *next_frame, void **this_cache)
|
||
{
|
||
struct ia64_frame_cache *cache;
|
||
char buf[8];
|
||
CORE_ADDR cfm, sof, sol, bsp, psr;
|
||
int i;
|
||
|
||
if (*this_cache)
|
||
return *this_cache;
|
||
|
||
cache = ia64_alloc_frame_cache ();
|
||
*this_cache = cache;
|
||
|
||
frame_unwind_register (next_frame, sp_regnum, buf);
|
||
cache->saved_sp = extract_unsigned_integer (buf, 8);
|
||
|
||
/* We always want the bsp to point to the end of frame.
|
||
This way, we can always get the beginning of frame (bof)
|
||
by subtracting frame size. */
|
||
frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
|
||
cache->bsp = extract_unsigned_integer (buf, 8);
|
||
|
||
frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
|
||
psr = extract_unsigned_integer (buf, 8);
|
||
|
||
frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
|
||
cfm = extract_unsigned_integer (buf, 8);
|
||
|
||
cache->sof = (cfm & 0x7f);
|
||
cache->sol = (cfm >> 7) & 0x7f;
|
||
cache->sor = ((cfm >> 14) & 0xf) * 8;
|
||
|
||
cache->cfm = cfm;
|
||
|
||
cache->pc = frame_func_unwind (next_frame);
|
||
|
||
if (cache->pc != 0)
|
||
examine_prologue (cache->pc, frame_pc_unwind (next_frame), next_frame, cache);
|
||
|
||
cache->base = cache->saved_sp + cache->mem_stack_frame_size;
|
||
|
||
return cache;
|
||
}
|
||
|
||
static void
|
||
ia64_frame_this_id (struct frame_info *next_frame, void **this_cache,
|
||
struct frame_id *this_id)
|
||
{
|
||
struct ia64_frame_cache *cache =
|
||
ia64_frame_cache (next_frame, this_cache);
|
||
|
||
/* This marks the outermost frame. */
|
||
if (cache->base == 0)
|
||
return;
|
||
|
||
(*this_id) = frame_id_build_special (cache->base, cache->pc, cache->bsp);
|
||
if (gdbarch_debug >= 1)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"regular frame id: code %lx, stack %lx, special %lx, next_frame %p\n",
|
||
this_id->code_addr, this_id->stack_addr, cache->bsp, next_frame);
|
||
}
|
||
|
||
static void
|
||
ia64_frame_prev_register (struct frame_info *next_frame, void **this_cache,
|
||
int regnum, int *optimizedp,
|
||
enum lval_type *lvalp, CORE_ADDR *addrp,
|
||
int *realnump, void *valuep)
|
||
{
|
||
struct ia64_frame_cache *cache =
|
||
ia64_frame_cache (next_frame, this_cache);
|
||
char dummy_valp[MAX_REGISTER_SIZE];
|
||
char buf[8];
|
||
|
||
gdb_assert (regnum >= 0);
|
||
|
||
if (!target_has_registers)
|
||
error ("No registers.");
|
||
|
||
*optimizedp = 0;
|
||
*addrp = 0;
|
||
*lvalp = not_lval;
|
||
*realnump = -1;
|
||
|
||
/* Rather than check each time if valuep is non-null, supply a dummy buffer
|
||
when valuep is not supplied. */
|
||
if (!valuep)
|
||
valuep = dummy_valp;
|
||
|
||
memset (valuep, 0, register_size (current_gdbarch, regnum));
|
||
|
||
if (regnum == SP_REGNUM)
|
||
{
|
||
/* Handle SP values for all frames but the topmost. */
|
||
store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
|
||
cache->base);
|
||
}
|
||
else if (regnum == IA64_BSP_REGNUM)
|
||
{
|
||
char cfm_valuep[MAX_REGISTER_SIZE];
|
||
int cfm_optim;
|
||
int cfm_realnum;
|
||
enum lval_type cfm_lval;
|
||
CORE_ADDR cfm_addr;
|
||
CORE_ADDR bsp, prev_cfm, prev_bsp;
|
||
|
||
/* We want to calculate the previous bsp as the end of the previous register stack frame.
|
||
This corresponds to what the hardware bsp register will be if we pop the frame
|
||
back which is why we might have been called. We know the beginning of the current
|
||
frame is cache->bsp - cache->sof. This value in the previous frame points to
|
||
the start of the output registers. We can calculate the end of that frame by adding
|
||
the size of output (sof (size of frame) - sol (size of locals)). */
|
||
ia64_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
|
||
&cfm_optim, &cfm_lval, &cfm_addr, &cfm_realnum, cfm_valuep);
|
||
prev_cfm = extract_unsigned_integer (cfm_valuep, 8);
|
||
|
||
bsp = rse_address_add (cache->bsp, -(cache->sof));
|
||
prev_bsp = rse_address_add (bsp, (prev_cfm & 0x7f) - ((prev_cfm >> 7) & 0x7f));
|
||
|
||
store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
|
||
prev_bsp);
|
||
}
|
||
else if (regnum == IA64_CFM_REGNUM)
|
||
{
|
||
CORE_ADDR addr = cache->saved_regs[IA64_CFM_REGNUM];
|
||
|
||
if (addr != 0)
|
||
{
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, valuep, register_size (current_gdbarch, regnum));
|
||
}
|
||
else if (cache->prev_cfm)
|
||
store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), cache->prev_cfm);
|
||
else if (cache->frameless)
|
||
{
|
||
CORE_ADDR cfm = 0;
|
||
frame_unwind_register (next_frame, IA64_PFS_REGNUM, valuep);
|
||
}
|
||
}
|
||
else if (regnum == IA64_VFP_REGNUM)
|
||
{
|
||
/* If the function in question uses an automatic register (r32-r127)
|
||
for the frame pointer, it'll be found by ia64_find_saved_register()
|
||
above. If the function lacks one of these frame pointers, we can
|
||
still provide a value since we know the size of the frame. */
|
||
CORE_ADDR vfp = cache->base;
|
||
store_unsigned_integer (valuep, register_size (current_gdbarch, IA64_VFP_REGNUM), vfp);
|
||
}
|
||
else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
|
||
{
|
||
char pr_valuep[MAX_REGISTER_SIZE];
|
||
int pr_optim;
|
||
int pr_realnum;
|
||
enum lval_type pr_lval;
|
||
CORE_ADDR pr_addr;
|
||
ULONGEST prN_val;
|
||
ia64_frame_prev_register (next_frame, this_cache, IA64_PR_REGNUM,
|
||
&pr_optim, &pr_lval, &pr_addr, &pr_realnum, pr_valuep);
|
||
if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
|
||
{
|
||
/* Fetch predicate register rename base from current frame
|
||
marker for this frame. */
|
||
int rrb_pr = (cache->cfm >> 32) & 0x3f;
|
||
|
||
/* Adjust the register number to account for register rotation. */
|
||
regnum = VP16_REGNUM
|
||
+ ((regnum - VP16_REGNUM) + rrb_pr) % 48;
|
||
}
|
||
prN_val = extract_bit_field ((unsigned char *) pr_valuep,
|
||
regnum - VP0_REGNUM, 1);
|
||
store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), prN_val);
|
||
}
|
||
else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
|
||
{
|
||
char unat_valuep[MAX_REGISTER_SIZE];
|
||
int unat_optim;
|
||
int unat_realnum;
|
||
enum lval_type unat_lval;
|
||
CORE_ADDR unat_addr;
|
||
ULONGEST unatN_val;
|
||
ia64_frame_prev_register (next_frame, this_cache, IA64_UNAT_REGNUM,
|
||
&unat_optim, &unat_lval, &unat_addr, &unat_realnum, unat_valuep);
|
||
unatN_val = extract_bit_field ((unsigned char *) unat_valuep,
|
||
regnum - IA64_NAT0_REGNUM, 1);
|
||
store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
|
||
unatN_val);
|
||
}
|
||
else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
|
||
{
|
||
int natval = 0;
|
||
/* Find address of general register corresponding to nat bit we're
|
||
interested in. */
|
||
CORE_ADDR gr_addr;
|
||
|
||
gr_addr = cache->saved_regs[regnum - IA64_NAT0_REGNUM
|
||
+ IA64_GR0_REGNUM];
|
||
if (gr_addr != 0)
|
||
{
|
||
/* Compute address of nat collection bits. */
|
||
CORE_ADDR nat_addr = gr_addr | 0x1f8;
|
||
CORE_ADDR bsp;
|
||
CORE_ADDR nat_collection;
|
||
int nat_bit;
|
||
/* If our nat collection address is bigger than bsp, we have to get
|
||
the nat collection from rnat. Otherwise, we fetch the nat
|
||
collection from the computed address. */
|
||
frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
|
||
bsp = extract_unsigned_integer (buf, 8);
|
||
if (nat_addr >= bsp)
|
||
{
|
||
frame_unwind_register (next_frame, IA64_RNAT_REGNUM, buf);
|
||
nat_collection = extract_unsigned_integer (buf, 8);
|
||
}
|
||
else
|
||
nat_collection = read_memory_integer (nat_addr, 8);
|
||
nat_bit = (gr_addr >> 3) & 0x3f;
|
||
natval = (nat_collection >> nat_bit) & 1;
|
||
}
|
||
|
||
store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), natval);
|
||
}
|
||
else if (regnum == IA64_IP_REGNUM)
|
||
{
|
||
CORE_ADDR pc = 0;
|
||
CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
|
||
|
||
if (addr != 0)
|
||
{
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, buf, register_size (current_gdbarch, IA64_IP_REGNUM));
|
||
pc = extract_unsigned_integer (buf, 8);
|
||
}
|
||
else if (cache->frameless)
|
||
{
|
||
frame_unwind_register (next_frame, IA64_BR0_REGNUM, buf);
|
||
pc = extract_unsigned_integer (buf, 8);
|
||
}
|
||
pc &= ~0xf;
|
||
store_unsigned_integer (valuep, 8, pc);
|
||
}
|
||
else if (regnum == IA64_PSR_REGNUM)
|
||
{
|
||
/* We don't know how to get the complete previous PSR, but we need it for
|
||
the slot information when we unwind the pc (pc is formed of IP register
|
||
plus slot information from PSR). To get the previous slot information,
|
||
we mask it off the return address. */
|
||
ULONGEST slot_num = 0;
|
||
CORE_ADDR pc= 0;
|
||
CORE_ADDR psr = 0;
|
||
CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
|
||
|
||
frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
|
||
psr = extract_unsigned_integer (buf, 8);
|
||
|
||
if (addr != 0)
|
||
{
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, buf, register_size (current_gdbarch, IA64_IP_REGNUM));
|
||
pc = extract_unsigned_integer (buf, 8);
|
||
}
|
||
else if (cache->frameless)
|
||
{
|
||
CORE_ADDR pc;
|
||
frame_unwind_register (next_frame, IA64_BR0_REGNUM, buf);
|
||
pc = extract_unsigned_integer (buf, 8);
|
||
}
|
||
psr &= ~(3LL << 41);
|
||
slot_num = pc & 0x3LL;
|
||
psr |= (CORE_ADDR)slot_num << 41;
|
||
store_unsigned_integer (valuep, 8, psr);
|
||
}
|
||
else if (regnum == IA64_BR0_REGNUM)
|
||
{
|
||
CORE_ADDR br0 = 0;
|
||
CORE_ADDR addr = cache->saved_regs[IA64_BR0_REGNUM];
|
||
if (addr != 0)
|
||
{
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, buf, register_size (current_gdbarch, IA64_BR0_REGNUM));
|
||
br0 = extract_unsigned_integer (buf, 8);
|
||
}
|
||
store_unsigned_integer (valuep, 8, br0);
|
||
}
|
||
else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) ||
|
||
(regnum >= V32_REGNUM && regnum <= V127_REGNUM))
|
||
{
|
||
CORE_ADDR addr = 0;
|
||
if (regnum >= V32_REGNUM)
|
||
regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
|
||
addr = cache->saved_regs[regnum];
|
||
if (addr != 0)
|
||
{
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, valuep, register_size (current_gdbarch, regnum));
|
||
}
|
||
else if (cache->frameless)
|
||
{
|
||
char r_valuep[MAX_REGISTER_SIZE];
|
||
int r_optim;
|
||
int r_realnum;
|
||
enum lval_type r_lval;
|
||
CORE_ADDR r_addr;
|
||
CORE_ADDR prev_cfm, prev_bsp, prev_bof;
|
||
CORE_ADDR addr = 0;
|
||
if (regnum >= V32_REGNUM)
|
||
regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
|
||
ia64_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
|
||
&r_optim, &r_lval, &r_addr, &r_realnum, r_valuep);
|
||
prev_cfm = extract_unsigned_integer (r_valuep, 8);
|
||
ia64_frame_prev_register (next_frame, this_cache, IA64_BSP_REGNUM,
|
||
&r_optim, &r_lval, &r_addr, &r_realnum, r_valuep);
|
||
prev_bsp = extract_unsigned_integer (r_valuep, 8);
|
||
prev_bof = rse_address_add (prev_bsp, -(prev_cfm & 0x7f));
|
||
|
||
addr = rse_address_add (prev_bof, (regnum - IA64_GR32_REGNUM));
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, valuep, register_size (current_gdbarch, regnum));
|
||
}
|
||
}
|
||
else
|
||
{
|
||
CORE_ADDR addr = 0;
|
||
if (IA64_FR32_REGNUM <= regnum && regnum <= IA64_FR127_REGNUM)
|
||
{
|
||
/* Fetch floating point register rename base from current
|
||
frame marker for this frame. */
|
||
int rrb_fr = (cache->cfm >> 25) & 0x7f;
|
||
|
||
/* Adjust the floating point register number to account for
|
||
register rotation. */
|
||
regnum = IA64_FR32_REGNUM
|
||
+ ((regnum - IA64_FR32_REGNUM) + rrb_fr) % 96;
|
||
}
|
||
|
||
/* If we have stored a memory address, access the register. */
|
||
addr = cache->saved_regs[regnum];
|
||
if (addr != 0)
|
||
{
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, valuep, register_size (current_gdbarch, regnum));
|
||
}
|
||
/* Otherwise, punt and get the current value of the register. */
|
||
else
|
||
frame_unwind_register (next_frame, regnum, valuep);
|
||
}
|
||
|
||
if (gdbarch_debug >= 1)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"regular prev register <%d> <%s> is %lx\n", regnum,
|
||
(((unsigned) regnum <= IA64_NAT127_REGNUM)
|
||
? ia64_register_names[regnum] : "r??"), extract_unsigned_integer (valuep, 8));
|
||
}
|
||
|
||
static const struct frame_unwind ia64_frame_unwind =
|
||
{
|
||
NORMAL_FRAME,
|
||
&ia64_frame_this_id,
|
||
&ia64_frame_prev_register
|
||
};
|
||
|
||
static const struct frame_unwind *
|
||
ia64_frame_sniffer (struct frame_info *next_frame)
|
||
{
|
||
return &ia64_frame_unwind;
|
||
}
|
||
|
||
/* Signal trampolines. */
|
||
|
||
static void
|
||
ia64_sigtramp_frame_init_saved_regs (struct ia64_frame_cache *cache)
|
||
{
|
||
if (SIGCONTEXT_REGISTER_ADDRESS)
|
||
{
|
||
int regno;
|
||
|
||
cache->saved_regs[IA64_VRAP_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_IP_REGNUM);
|
||
cache->saved_regs[IA64_CFM_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_CFM_REGNUM);
|
||
cache->saved_regs[IA64_PSR_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_PSR_REGNUM);
|
||
cache->saved_regs[IA64_BSP_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_BSP_REGNUM);
|
||
cache->saved_regs[IA64_RNAT_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_RNAT_REGNUM);
|
||
cache->saved_regs[IA64_CCV_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_CCV_REGNUM);
|
||
cache->saved_regs[IA64_UNAT_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_UNAT_REGNUM);
|
||
cache->saved_regs[IA64_FPSR_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_FPSR_REGNUM);
|
||
cache->saved_regs[IA64_PFS_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_PFS_REGNUM);
|
||
cache->saved_regs[IA64_LC_REGNUM] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_LC_REGNUM);
|
||
for (regno = IA64_GR1_REGNUM; regno <= IA64_GR31_REGNUM; regno++)
|
||
cache->saved_regs[regno] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, regno);
|
||
for (regno = IA64_BR0_REGNUM; regno <= IA64_BR7_REGNUM; regno++)
|
||
cache->saved_regs[regno] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, regno);
|
||
for (regno = IA64_FR2_REGNUM; regno <= IA64_FR31_REGNUM; regno++)
|
||
cache->saved_regs[regno] =
|
||
SIGCONTEXT_REGISTER_ADDRESS (cache->base, regno);
|
||
}
|
||
}
|
||
|
||
static struct ia64_frame_cache *
|
||
ia64_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
|
||
{
|
||
struct ia64_frame_cache *cache;
|
||
CORE_ADDR addr;
|
||
char buf[8];
|
||
int i;
|
||
|
||
if (*this_cache)
|
||
return *this_cache;
|
||
|
||
cache = ia64_alloc_frame_cache ();
|
||
|
||
frame_unwind_register (next_frame, sp_regnum, buf);
|
||
/* Note that frame size is hard-coded below. We cannot calculate it
|
||
via prologue examination. */
|
||
cache->base = extract_unsigned_integer (buf, 8) + 16;
|
||
|
||
frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
|
||
cache->bsp = extract_unsigned_integer (buf, 8);
|
||
|
||
frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
|
||
cache->cfm = extract_unsigned_integer (buf, 8);
|
||
cache->sof = cache->cfm & 0x7f;
|
||
|
||
ia64_sigtramp_frame_init_saved_regs (cache);
|
||
|
||
*this_cache = cache;
|
||
return cache;
|
||
}
|
||
|
||
static void
|
||
ia64_sigtramp_frame_this_id (struct frame_info *next_frame,
|
||
void **this_cache, struct frame_id *this_id)
|
||
{
|
||
struct ia64_frame_cache *cache =
|
||
ia64_sigtramp_frame_cache (next_frame, this_cache);
|
||
|
||
(*this_id) = frame_id_build_special (cache->base, frame_pc_unwind (next_frame), cache->bsp);
|
||
if (gdbarch_debug >= 1)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"sigtramp frame id: code %lx, stack %lx, special %lx, next_frame %p\n",
|
||
this_id->code_addr, this_id->stack_addr, cache->bsp, next_frame);
|
||
}
|
||
|
||
static void
|
||
ia64_sigtramp_frame_prev_register (struct frame_info *next_frame,
|
||
void **this_cache,
|
||
int regnum, int *optimizedp,
|
||
enum lval_type *lvalp, CORE_ADDR *addrp,
|
||
int *realnump, void *valuep)
|
||
{
|
||
char dummy_valp[MAX_REGISTER_SIZE];
|
||
char buf[MAX_REGISTER_SIZE];
|
||
|
||
struct ia64_frame_cache *cache =
|
||
ia64_sigtramp_frame_cache (next_frame, this_cache);
|
||
|
||
gdb_assert (regnum >= 0);
|
||
|
||
if (!target_has_registers)
|
||
error ("No registers.");
|
||
|
||
*optimizedp = 0;
|
||
*addrp = 0;
|
||
*lvalp = not_lval;
|
||
*realnump = -1;
|
||
|
||
/* Rather than check each time if valuep is non-null, supply a dummy buffer
|
||
when valuep is not supplied. */
|
||
if (!valuep)
|
||
valuep = dummy_valp;
|
||
|
||
memset (valuep, 0, register_size (current_gdbarch, regnum));
|
||
|
||
if (regnum == IA64_IP_REGNUM)
|
||
{
|
||
CORE_ADDR pc = 0;
|
||
CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
|
||
|
||
if (addr != 0)
|
||
{
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, buf, register_size (current_gdbarch, IA64_IP_REGNUM));
|
||
pc = extract_unsigned_integer (buf, 8);
|
||
}
|
||
pc &= ~0xf;
|
||
store_unsigned_integer (valuep, 8, pc);
|
||
}
|
||
else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) ||
|
||
(regnum >= V32_REGNUM && regnum <= V127_REGNUM))
|
||
{
|
||
CORE_ADDR addr = 0;
|
||
if (regnum >= V32_REGNUM)
|
||
regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
|
||
addr = cache->saved_regs[regnum];
|
||
if (addr != 0)
|
||
{
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, valuep, register_size (current_gdbarch, regnum));
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* All other registers not listed above. */
|
||
CORE_ADDR addr = cache->saved_regs[regnum];
|
||
if (addr != 0)
|
||
{
|
||
*lvalp = lval_memory;
|
||
*addrp = addr;
|
||
read_memory (addr, valuep, register_size (current_gdbarch, regnum));
|
||
}
|
||
}
|
||
|
||
if (gdbarch_debug >= 1)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"sigtramp prev register <%s> is %lx\n",
|
||
(((unsigned) regnum <= IA64_NAT127_REGNUM)
|
||
? ia64_register_names[regnum] : "r??"), extract_unsigned_integer (valuep, 8));
|
||
}
|
||
|
||
static const struct frame_unwind ia64_sigtramp_frame_unwind =
|
||
{
|
||
SIGTRAMP_FRAME,
|
||
ia64_sigtramp_frame_this_id,
|
||
ia64_sigtramp_frame_prev_register
|
||
};
|
||
|
||
static const struct frame_unwind *
|
||
ia64_sigtramp_frame_sniffer (struct frame_info *next_frame)
|
||
{
|
||
char *name;
|
||
CORE_ADDR pc = frame_pc_unwind (next_frame);
|
||
|
||
find_pc_partial_function (pc, &name, NULL, NULL);
|
||
if (PC_IN_SIGTRAMP (pc, name))
|
||
return &ia64_sigtramp_frame_unwind;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
|
||
static CORE_ADDR
|
||
ia64_frame_base_address (struct frame_info *next_frame, void **this_cache)
|
||
{
|
||
struct ia64_frame_cache *cache =
|
||
ia64_frame_cache (next_frame, this_cache);
|
||
|
||
return cache->base;
|
||
}
|
||
|
||
static const struct frame_base ia64_frame_base =
|
||
{
|
||
&ia64_frame_unwind,
|
||
ia64_frame_base_address,
|
||
ia64_frame_base_address,
|
||
ia64_frame_base_address
|
||
};
|
||
|
||
/* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of
|
||
EXTRACT_RETURN_VALUE? GCC_P is true if compiled with gcc
|
||
and TYPE is the type (which is known to be struct, union or array). */
|
||
int
|
||
ia64_use_struct_convention (int gcc_p, struct type *type)
|
||
{
|
||
struct type *float_elt_type;
|
||
|
||
/* HFAs are structures (or arrays) consisting entirely of floating
|
||
point values of the same length. Up to 8 of these are returned
|
||
in registers. Don't use the struct convention when this is the
|
||
case. */
|
||
float_elt_type = is_float_or_hfa_type (type);
|
||
if (float_elt_type != NULL
|
||
&& TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type) <= 8)
|
||
return 0;
|
||
|
||
/* Other structs of length 32 or less are returned in r8-r11.
|
||
Don't use the struct convention for those either. */
|
||
return TYPE_LENGTH (type) > 32;
|
||
}
|
||
|
||
void
|
||
ia64_extract_return_value (struct type *type, struct regcache *regcache, void *valbuf)
|
||
{
|
||
struct type *float_elt_type;
|
||
|
||
float_elt_type = is_float_or_hfa_type (type);
|
||
if (float_elt_type != NULL)
|
||
{
|
||
char from[MAX_REGISTER_SIZE];
|
||
int offset = 0;
|
||
int regnum = IA64_FR8_REGNUM;
|
||
int n = TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type);
|
||
|
||
while (n-- > 0)
|
||
{
|
||
regcache_cooked_read (regcache, regnum, from);
|
||
convert_typed_floating (from, builtin_type_ia64_ext,
|
||
(char *)valbuf + offset, float_elt_type);
|
||
offset += TYPE_LENGTH (float_elt_type);
|
||
regnum++;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
ULONGEST val;
|
||
int offset = 0;
|
||
int regnum = IA64_GR8_REGNUM;
|
||
int reglen = TYPE_LENGTH (ia64_register_type (NULL, IA64_GR8_REGNUM));
|
||
int n = TYPE_LENGTH (type) / reglen;
|
||
int m = TYPE_LENGTH (type) % reglen;
|
||
|
||
while (n-- > 0)
|
||
{
|
||
ULONGEST val;
|
||
regcache_cooked_read_unsigned (regcache, regnum, &val);
|
||
memcpy ((char *)valbuf + offset, &val, reglen);
|
||
offset += reglen;
|
||
regnum++;
|
||
}
|
||
|
||
if (m)
|
||
{
|
||
regcache_cooked_read_unsigned (regcache, regnum, &val);
|
||
memcpy ((char *)valbuf + offset, &val, m);
|
||
}
|
||
}
|
||
}
|
||
|
||
CORE_ADDR
|
||
ia64_extract_struct_value_address (struct regcache *regcache)
|
||
{
|
||
error ("ia64_extract_struct_value_address called and cannot get struct value address");
|
||
return 0;
|
||
}
|
||
|
||
|
||
static int
|
||
is_float_or_hfa_type_recurse (struct type *t, struct type **etp)
|
||
{
|
||
switch (TYPE_CODE (t))
|
||
{
|
||
case TYPE_CODE_FLT:
|
||
if (*etp)
|
||
return TYPE_LENGTH (*etp) == TYPE_LENGTH (t);
|
||
else
|
||
{
|
||
*etp = t;
|
||
return 1;
|
||
}
|
||
break;
|
||
case TYPE_CODE_ARRAY:
|
||
return
|
||
is_float_or_hfa_type_recurse (check_typedef (TYPE_TARGET_TYPE (t)),
|
||
etp);
|
||
break;
|
||
case TYPE_CODE_STRUCT:
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < TYPE_NFIELDS (t); i++)
|
||
if (!is_float_or_hfa_type_recurse
|
||
(check_typedef (TYPE_FIELD_TYPE (t, i)), etp))
|
||
return 0;
|
||
return 1;
|
||
}
|
||
break;
|
||
default:
|
||
return 0;
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Determine if the given type is one of the floating point types or
|
||
and HFA (which is a struct, array, or combination thereof whose
|
||
bottom-most elements are all of the same floating point type). */
|
||
|
||
static struct type *
|
||
is_float_or_hfa_type (struct type *t)
|
||
{
|
||
struct type *et = 0;
|
||
|
||
return is_float_or_hfa_type_recurse (t, &et) ? et : 0;
|
||
}
|
||
|
||
|
||
/* Return 1 if the alignment of T is such that the next even slot
|
||
should be used. Return 0, if the next available slot should
|
||
be used. (See section 8.5.1 of the IA-64 Software Conventions
|
||
and Runtime manual). */
|
||
|
||
static int
|
||
slot_alignment_is_next_even (struct type *t)
|
||
{
|
||
switch (TYPE_CODE (t))
|
||
{
|
||
case TYPE_CODE_INT:
|
||
case TYPE_CODE_FLT:
|
||
if (TYPE_LENGTH (t) > 8)
|
||
return 1;
|
||
else
|
||
return 0;
|
||
case TYPE_CODE_ARRAY:
|
||
return
|
||
slot_alignment_is_next_even (check_typedef (TYPE_TARGET_TYPE (t)));
|
||
case TYPE_CODE_STRUCT:
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < TYPE_NFIELDS (t); i++)
|
||
if (slot_alignment_is_next_even
|
||
(check_typedef (TYPE_FIELD_TYPE (t, i))))
|
||
return 1;
|
||
return 0;
|
||
}
|
||
default:
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
/* Attempt to find (and return) the global pointer for the given
|
||
function.
|
||
|
||
This is a rather nasty bit of code searchs for the .dynamic section
|
||
in the objfile corresponding to the pc of the function we're trying
|
||
to call. Once it finds the addresses at which the .dynamic section
|
||
lives in the child process, it scans the Elf64_Dyn entries for a
|
||
DT_PLTGOT tag. If it finds one of these, the corresponding
|
||
d_un.d_ptr value is the global pointer. */
|
||
|
||
static CORE_ADDR
|
||
generic_elf_find_global_pointer (CORE_ADDR faddr)
|
||
{
|
||
struct obj_section *faddr_sect;
|
||
|
||
faddr_sect = find_pc_section (faddr);
|
||
if (faddr_sect != NULL)
|
||
{
|
||
struct obj_section *osect;
|
||
|
||
ALL_OBJFILE_OSECTIONS (faddr_sect->objfile, osect)
|
||
{
|
||
if (strcmp (osect->the_bfd_section->name, ".dynamic") == 0)
|
||
break;
|
||
}
|
||
|
||
if (osect < faddr_sect->objfile->sections_end)
|
||
{
|
||
CORE_ADDR addr;
|
||
|
||
addr = osect->addr;
|
||
while (addr < osect->endaddr)
|
||
{
|
||
int status;
|
||
LONGEST tag;
|
||
char buf[8];
|
||
|
||
status = target_read_memory (addr, buf, sizeof (buf));
|
||
if (status != 0)
|
||
break;
|
||
tag = extract_signed_integer (buf, sizeof (buf));
|
||
|
||
if (tag == DT_PLTGOT)
|
||
{
|
||
CORE_ADDR global_pointer;
|
||
|
||
status = target_read_memory (addr + 8, buf, sizeof (buf));
|
||
if (status != 0)
|
||
break;
|
||
global_pointer = extract_unsigned_integer (buf, sizeof (buf));
|
||
|
||
/* The payoff... */
|
||
return global_pointer;
|
||
}
|
||
|
||
if (tag == DT_NULL)
|
||
break;
|
||
|
||
addr += 16;
|
||
}
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Given a function's address, attempt to find (and return) the
|
||
corresponding (canonical) function descriptor. Return 0 if
|
||
not found. */
|
||
static CORE_ADDR
|
||
find_extant_func_descr (CORE_ADDR faddr)
|
||
{
|
||
struct obj_section *faddr_sect;
|
||
|
||
/* Return early if faddr is already a function descriptor. */
|
||
faddr_sect = find_pc_section (faddr);
|
||
if (faddr_sect && strcmp (faddr_sect->the_bfd_section->name, ".opd") == 0)
|
||
return faddr;
|
||
|
||
if (faddr_sect != NULL)
|
||
{
|
||
struct obj_section *osect;
|
||
ALL_OBJFILE_OSECTIONS (faddr_sect->objfile, osect)
|
||
{
|
||
if (strcmp (osect->the_bfd_section->name, ".opd") == 0)
|
||
break;
|
||
}
|
||
|
||
if (osect < faddr_sect->objfile->sections_end)
|
||
{
|
||
CORE_ADDR addr;
|
||
|
||
addr = osect->addr;
|
||
while (addr < osect->endaddr)
|
||
{
|
||
int status;
|
||
LONGEST faddr2;
|
||
char buf[8];
|
||
|
||
status = target_read_memory (addr, buf, sizeof (buf));
|
||
if (status != 0)
|
||
break;
|
||
faddr2 = extract_signed_integer (buf, sizeof (buf));
|
||
|
||
if (faddr == faddr2)
|
||
return addr;
|
||
|
||
addr += 16;
|
||
}
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Attempt to find a function descriptor corresponding to the
|
||
given address. If none is found, construct one on the
|
||
stack using the address at fdaptr. */
|
||
|
||
static CORE_ADDR
|
||
find_func_descr (CORE_ADDR faddr, CORE_ADDR *fdaptr)
|
||
{
|
||
CORE_ADDR fdesc;
|
||
|
||
fdesc = find_extant_func_descr (faddr);
|
||
|
||
if (fdesc == 0)
|
||
{
|
||
CORE_ADDR global_pointer;
|
||
char buf[16];
|
||
|
||
fdesc = *fdaptr;
|
||
*fdaptr += 16;
|
||
|
||
global_pointer = FIND_GLOBAL_POINTER (faddr);
|
||
|
||
if (global_pointer == 0)
|
||
global_pointer = read_register (IA64_GR1_REGNUM);
|
||
|
||
store_unsigned_integer (buf, 8, faddr);
|
||
store_unsigned_integer (buf + 8, 8, global_pointer);
|
||
|
||
write_memory (fdesc, buf, 16);
|
||
}
|
||
|
||
return fdesc;
|
||
}
|
||
|
||
/* Use the following routine when printing out function pointers
|
||
so the user can see the function address rather than just the
|
||
function descriptor. */
|
||
static CORE_ADDR
|
||
ia64_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr,
|
||
struct target_ops *targ)
|
||
{
|
||
struct obj_section *s;
|
||
|
||
s = find_pc_section (addr);
|
||
|
||
/* check if ADDR points to a function descriptor. */
|
||
if (s && strcmp (s->the_bfd_section->name, ".opd") == 0)
|
||
return read_memory_unsigned_integer (addr, 8);
|
||
|
||
return addr;
|
||
}
|
||
|
||
static CORE_ADDR
|
||
ia64_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp)
|
||
{
|
||
return sp & ~0xfLL;
|
||
}
|
||
|
||
static CORE_ADDR
|
||
ia64_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr,
|
||
struct regcache *regcache, CORE_ADDR bp_addr,
|
||
int nargs, struct value **args, CORE_ADDR sp,
|
||
int struct_return, CORE_ADDR struct_addr)
|
||
{
|
||
int argno;
|
||
struct value *arg;
|
||
struct type *type;
|
||
int len, argoffset;
|
||
int nslots, rseslots, memslots, slotnum, nfuncargs;
|
||
int floatreg;
|
||
CORE_ADDR bsp, cfm, pfs, new_bsp, funcdescaddr, pc, global_pointer;
|
||
|
||
nslots = 0;
|
||
nfuncargs = 0;
|
||
/* Count the number of slots needed for the arguments. */
|
||
for (argno = 0; argno < nargs; argno++)
|
||
{
|
||
arg = args[argno];
|
||
type = check_typedef (VALUE_TYPE (arg));
|
||
len = TYPE_LENGTH (type);
|
||
|
||
if ((nslots & 1) && slot_alignment_is_next_even (type))
|
||
nslots++;
|
||
|
||
if (TYPE_CODE (type) == TYPE_CODE_FUNC)
|
||
nfuncargs++;
|
||
|
||
nslots += (len + 7) / 8;
|
||
}
|
||
|
||
/* Divvy up the slots between the RSE and the memory stack. */
|
||
rseslots = (nslots > 8) ? 8 : nslots;
|
||
memslots = nslots - rseslots;
|
||
|
||
/* Allocate a new RSE frame. */
|
||
cfm = read_register (IA64_CFM_REGNUM);
|
||
|
||
bsp = read_register (IA64_BSP_REGNUM);
|
||
new_bsp = rse_address_add (bsp, rseslots);
|
||
write_register (IA64_BSP_REGNUM, new_bsp);
|
||
|
||
pfs = read_register (IA64_PFS_REGNUM);
|
||
pfs &= 0xc000000000000000LL;
|
||
pfs |= (cfm & 0xffffffffffffLL);
|
||
write_register (IA64_PFS_REGNUM, pfs);
|
||
|
||
cfm &= 0xc000000000000000LL;
|
||
cfm |= rseslots;
|
||
write_register (IA64_CFM_REGNUM, cfm);
|
||
|
||
/* We will attempt to find function descriptors in the .opd segment,
|
||
but if we can't we'll construct them ourselves. That being the
|
||
case, we'll need to reserve space on the stack for them. */
|
||
funcdescaddr = sp - nfuncargs * 16;
|
||
funcdescaddr &= ~0xfLL;
|
||
|
||
/* Adjust the stack pointer to it's new value. The calling conventions
|
||
require us to have 16 bytes of scratch, plus whatever space is
|
||
necessary for the memory slots and our function descriptors. */
|
||
sp = sp - 16 - (memslots + nfuncargs) * 8;
|
||
sp &= ~0xfLL; /* Maintain 16 byte alignment. */
|
||
|
||
/* Place the arguments where they belong. The arguments will be
|
||
either placed in the RSE backing store or on the memory stack.
|
||
In addition, floating point arguments or HFAs are placed in
|
||
floating point registers. */
|
||
slotnum = 0;
|
||
floatreg = IA64_FR8_REGNUM;
|
||
for (argno = 0; argno < nargs; argno++)
|
||
{
|
||
struct type *float_elt_type;
|
||
|
||
arg = args[argno];
|
||
type = check_typedef (VALUE_TYPE (arg));
|
||
len = TYPE_LENGTH (type);
|
||
|
||
/* Special handling for function parameters. */
|
||
if (len == 8
|
||
&& TYPE_CODE (type) == TYPE_CODE_PTR
|
||
&& TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC)
|
||
{
|
||
char val_buf[8];
|
||
|
||
store_unsigned_integer (val_buf, 8,
|
||
find_func_descr (extract_unsigned_integer (VALUE_CONTENTS (arg), 8),
|
||
&funcdescaddr));
|
||
if (slotnum < rseslots)
|
||
write_memory (rse_address_add (bsp, slotnum), val_buf, 8);
|
||
else
|
||
write_memory (sp + 16 + 8 * (slotnum - rseslots), val_buf, 8);
|
||
slotnum++;
|
||
continue;
|
||
}
|
||
|
||
/* Normal slots. */
|
||
|
||
/* Skip odd slot if necessary... */
|
||
if ((slotnum & 1) && slot_alignment_is_next_even (type))
|
||
slotnum++;
|
||
|
||
argoffset = 0;
|
||
while (len > 0)
|
||
{
|
||
char val_buf[8];
|
||
|
||
memset (val_buf, 0, 8);
|
||
memcpy (val_buf, VALUE_CONTENTS (arg) + argoffset, (len > 8) ? 8 : len);
|
||
|
||
if (slotnum < rseslots)
|
||
write_memory (rse_address_add (bsp, slotnum), val_buf, 8);
|
||
else
|
||
write_memory (sp + 16 + 8 * (slotnum - rseslots), val_buf, 8);
|
||
|
||
argoffset += 8;
|
||
len -= 8;
|
||
slotnum++;
|
||
}
|
||
|
||
/* Handle floating point types (including HFAs). */
|
||
float_elt_type = is_float_or_hfa_type (type);
|
||
if (float_elt_type != NULL)
|
||
{
|
||
argoffset = 0;
|
||
len = TYPE_LENGTH (type);
|
||
while (len > 0 && floatreg < IA64_FR16_REGNUM)
|
||
{
|
||
char to[MAX_REGISTER_SIZE];
|
||
convert_typed_floating (VALUE_CONTENTS (arg) + argoffset, float_elt_type,
|
||
to, builtin_type_ia64_ext);
|
||
regcache_cooked_write (regcache, floatreg, (void *)to);
|
||
floatreg++;
|
||
argoffset += TYPE_LENGTH (float_elt_type);
|
||
len -= TYPE_LENGTH (float_elt_type);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Store the struct return value in r8 if necessary. */
|
||
if (struct_return)
|
||
{
|
||
regcache_cooked_write_unsigned (regcache, IA64_GR8_REGNUM, (ULONGEST)struct_addr);
|
||
}
|
||
|
||
global_pointer = FIND_GLOBAL_POINTER (func_addr);
|
||
|
||
if (global_pointer != 0)
|
||
write_register (IA64_GR1_REGNUM, global_pointer);
|
||
|
||
write_register (IA64_BR0_REGNUM, bp_addr);
|
||
|
||
write_register (sp_regnum, sp);
|
||
|
||
return sp;
|
||
}
|
||
|
||
static struct frame_id
|
||
ia64_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
|
||
{
|
||
char buf[8];
|
||
CORE_ADDR sp, bsp;
|
||
|
||
frame_unwind_register (next_frame, sp_regnum, buf);
|
||
sp = extract_unsigned_integer (buf, 8);
|
||
|
||
frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
|
||
bsp = extract_unsigned_integer (buf, 8);
|
||
|
||
if (gdbarch_debug >= 1)
|
||
fprintf_unfiltered (gdb_stdlog,
|
||
"dummy frame id: code %lx, stack %lx, special %lx\n",
|
||
frame_pc_unwind (next_frame), sp, bsp);
|
||
|
||
return frame_id_build_special (sp, frame_pc_unwind (next_frame), bsp);
|
||
}
|
||
|
||
static CORE_ADDR
|
||
ia64_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
|
||
{
|
||
char buf[8];
|
||
CORE_ADDR ip, psr, pc;
|
||
|
||
frame_unwind_register (next_frame, IA64_IP_REGNUM, buf);
|
||
ip = extract_unsigned_integer (buf, 8);
|
||
frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
|
||
psr = extract_unsigned_integer (buf, 8);
|
||
|
||
pc = (ip & ~0xf) | ((psr >> 41) & 3);
|
||
return pc;
|
||
}
|
||
|
||
static void
|
||
ia64_store_return_value (struct type *type, struct regcache *regcache, const void *valbuf)
|
||
{
|
||
if (TYPE_CODE (type) == TYPE_CODE_FLT)
|
||
{
|
||
char to[MAX_REGISTER_SIZE];
|
||
convert_typed_floating (valbuf, type, to, builtin_type_ia64_ext);
|
||
regcache_cooked_write (regcache, IA64_FR8_REGNUM, (void *)to);
|
||
target_store_registers (IA64_FR8_REGNUM);
|
||
}
|
||
else
|
||
regcache_cooked_write (regcache, IA64_GR8_REGNUM, valbuf);
|
||
}
|
||
|
||
static void
|
||
ia64_remote_translate_xfer_address (struct gdbarch *gdbarch,
|
||
struct regcache *regcache,
|
||
CORE_ADDR memaddr, int nr_bytes,
|
||
CORE_ADDR *targ_addr, int *targ_len)
|
||
{
|
||
*targ_addr = memaddr;
|
||
*targ_len = nr_bytes;
|
||
}
|
||
|
||
static void
|
||
process_note_abi_tag_sections (bfd *abfd, asection *sect, void *obj)
|
||
{
|
||
int *os_ident_ptr = obj;
|
||
const char *name;
|
||
unsigned int sectsize;
|
||
|
||
name = bfd_get_section_name (abfd, sect);
|
||
sectsize = bfd_section_size (abfd, sect);
|
||
if (strcmp (name, ".note.ABI-tag") == 0 && sectsize > 0)
|
||
{
|
||
unsigned int name_length, data_length, note_type;
|
||
char *note = alloca (sectsize);
|
||
|
||
bfd_get_section_contents (abfd, sect, note,
|
||
(file_ptr) 0, (bfd_size_type) sectsize);
|
||
|
||
name_length = bfd_h_get_32 (abfd, note);
|
||
data_length = bfd_h_get_32 (abfd, note + 4);
|
||
note_type = bfd_h_get_32 (abfd, note + 8);
|
||
|
||
if (name_length == 4 && data_length == 16 && note_type == 1
|
||
&& strcmp (note + 12, "GNU") == 0)
|
||
{
|
||
int os_number = bfd_h_get_32 (abfd, note + 16);
|
||
|
||
/* The case numbers are from abi-tags in glibc. */
|
||
switch (os_number)
|
||
{
|
||
case 0 :
|
||
*os_ident_ptr = ELFOSABI_LINUX;
|
||
break;
|
||
case 1 :
|
||
*os_ident_ptr = ELFOSABI_HURD;
|
||
break;
|
||
case 2 :
|
||
*os_ident_ptr = ELFOSABI_SOLARIS;
|
||
break;
|
||
default :
|
||
internal_error (__FILE__, __LINE__,
|
||
"process_note_abi_sections: unknown OS number %d", os_number);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
static int
|
||
ia64_print_insn (bfd_vma memaddr, struct disassemble_info *info)
|
||
{
|
||
info->bytes_per_line = SLOT_MULTIPLIER;
|
||
return print_insn_ia64 (memaddr, info);
|
||
}
|
||
|
||
static struct gdbarch *
|
||
ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
|
||
{
|
||
struct gdbarch *gdbarch;
|
||
struct gdbarch_tdep *tdep;
|
||
int os_ident;
|
||
|
||
if (info.abfd != NULL
|
||
&& bfd_get_flavour (info.abfd) == bfd_target_elf_flavour)
|
||
{
|
||
os_ident = elf_elfheader (info.abfd)->e_ident[EI_OSABI];
|
||
|
||
/* If os_ident is 0, it is not necessarily the case that we're
|
||
on a SYSV system. (ELFOSABI_NONE is defined to be 0.)
|
||
GNU/Linux uses a note section to record OS/ABI info, but
|
||
leaves e_ident[EI_OSABI] zero. So we have to check for note
|
||
sections too. */
|
||
if (os_ident == 0)
|
||
{
|
||
bfd_map_over_sections (info.abfd,
|
||
process_note_abi_tag_sections,
|
||
&os_ident);
|
||
}
|
||
}
|
||
else
|
||
os_ident = -1;
|
||
|
||
for (arches = gdbarch_list_lookup_by_info (arches, &info);
|
||
arches != NULL;
|
||
arches = gdbarch_list_lookup_by_info (arches->next, &info))
|
||
{
|
||
tdep = gdbarch_tdep (arches->gdbarch);
|
||
if (tdep &&tdep->os_ident == os_ident)
|
||
return arches->gdbarch;
|
||
}
|
||
|
||
tdep = xmalloc (sizeof (struct gdbarch_tdep));
|
||
gdbarch = gdbarch_alloc (&info, tdep);
|
||
tdep->os_ident = os_ident;
|
||
|
||
/* Set the method of obtaining the sigcontext addresses at which
|
||
registers are saved. The method of checking to see if
|
||
native_find_global_pointer is nonzero to indicate that we're
|
||
on AIX is kind of hokey, but I can't think of a better way
|
||
to do it. */
|
||
if (os_ident == ELFOSABI_LINUX)
|
||
tdep->sigcontext_register_address = ia64_linux_sigcontext_register_address;
|
||
else if (native_find_global_pointer != 0)
|
||
tdep->sigcontext_register_address = ia64_aix_sigcontext_register_address;
|
||
else
|
||
tdep->sigcontext_register_address = 0;
|
||
|
||
/* We know that GNU/Linux won't have to resort to the
|
||
native_find_global_pointer hackery. But that's the only one we
|
||
know about so far, so if native_find_global_pointer is set to
|
||
something non-zero, then use it. Otherwise fall back to using
|
||
generic_elf_find_global_pointer. This arrangement should (in
|
||
theory) allow us to cross debug GNU/Linux binaries from an AIX
|
||
machine. */
|
||
if (os_ident == ELFOSABI_LINUX)
|
||
tdep->find_global_pointer = generic_elf_find_global_pointer;
|
||
else if (native_find_global_pointer != 0)
|
||
tdep->find_global_pointer = native_find_global_pointer;
|
||
else
|
||
tdep->find_global_pointer = generic_elf_find_global_pointer;
|
||
|
||
/* Define the ia64 floating-point format to gdb. */
|
||
builtin_type_ia64_ext =
|
||
init_type (TYPE_CODE_FLT, 128 / 8,
|
||
0, "builtin_type_ia64_ext", NULL);
|
||
TYPE_FLOATFORMAT (builtin_type_ia64_ext) = &floatformat_ia64_ext;
|
||
|
||
set_gdbarch_short_bit (gdbarch, 16);
|
||
set_gdbarch_int_bit (gdbarch, 32);
|
||
set_gdbarch_long_bit (gdbarch, 64);
|
||
set_gdbarch_long_long_bit (gdbarch, 64);
|
||
set_gdbarch_float_bit (gdbarch, 32);
|
||
set_gdbarch_double_bit (gdbarch, 64);
|
||
set_gdbarch_long_double_bit (gdbarch, 128);
|
||
set_gdbarch_ptr_bit (gdbarch, 64);
|
||
|
||
set_gdbarch_num_regs (gdbarch, NUM_IA64_RAW_REGS);
|
||
set_gdbarch_num_pseudo_regs (gdbarch, LAST_PSEUDO_REGNUM - FIRST_PSEUDO_REGNUM);
|
||
set_gdbarch_sp_regnum (gdbarch, sp_regnum);
|
||
set_gdbarch_fp0_regnum (gdbarch, IA64_FR0_REGNUM);
|
||
|
||
set_gdbarch_register_name (gdbarch, ia64_register_name);
|
||
/* FIXME: Following interface should not be needed, however, without it recurse.exp
|
||
gets a number of extra failures. */
|
||
set_gdbarch_deprecated_register_size (gdbarch, 8);
|
||
set_gdbarch_register_type (gdbarch, ia64_register_type);
|
||
|
||
set_gdbarch_pseudo_register_read (gdbarch, ia64_pseudo_register_read);
|
||
set_gdbarch_pseudo_register_write (gdbarch, ia64_pseudo_register_write);
|
||
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, ia64_dwarf_reg_to_regnum);
|
||
set_gdbarch_register_reggroup_p (gdbarch, ia64_register_reggroup_p);
|
||
set_gdbarch_convert_register_p (gdbarch, ia64_convert_register_p);
|
||
set_gdbarch_register_to_value (gdbarch, ia64_register_to_value);
|
||
set_gdbarch_value_to_register (gdbarch, ia64_value_to_register);
|
||
|
||
set_gdbarch_skip_prologue (gdbarch, ia64_skip_prologue);
|
||
|
||
set_gdbarch_use_struct_convention (gdbarch, ia64_use_struct_convention);
|
||
set_gdbarch_extract_return_value (gdbarch, ia64_extract_return_value);
|
||
|
||
set_gdbarch_store_return_value (gdbarch, ia64_store_return_value);
|
||
set_gdbarch_extract_struct_value_address (gdbarch, ia64_extract_struct_value_address);
|
||
|
||
set_gdbarch_memory_insert_breakpoint (gdbarch, ia64_memory_insert_breakpoint);
|
||
set_gdbarch_memory_remove_breakpoint (gdbarch, ia64_memory_remove_breakpoint);
|
||
set_gdbarch_breakpoint_from_pc (gdbarch, ia64_breakpoint_from_pc);
|
||
set_gdbarch_read_pc (gdbarch, ia64_read_pc);
|
||
set_gdbarch_write_pc (gdbarch, ia64_write_pc);
|
||
|
||
/* Settings for calling functions in the inferior. */
|
||
set_gdbarch_push_dummy_call (gdbarch, ia64_push_dummy_call);
|
||
set_gdbarch_frame_align (gdbarch, ia64_frame_align);
|
||
set_gdbarch_unwind_dummy_id (gdbarch, ia64_unwind_dummy_id);
|
||
|
||
set_gdbarch_unwind_pc (gdbarch, ia64_unwind_pc);
|
||
frame_unwind_append_sniffer (gdbarch, ia64_sigtramp_frame_sniffer);
|
||
frame_unwind_append_sniffer (gdbarch, ia64_frame_sniffer);
|
||
frame_base_set_default (gdbarch, &ia64_frame_base);
|
||
|
||
/* Settings that should be unnecessary. */
|
||
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
|
||
|
||
set_gdbarch_decr_pc_after_break (gdbarch, 0);
|
||
set_gdbarch_function_start_offset (gdbarch, 0);
|
||
set_gdbarch_frame_args_skip (gdbarch, 0);
|
||
|
||
set_gdbarch_remote_translate_xfer_address (
|
||
gdbarch, ia64_remote_translate_xfer_address);
|
||
|
||
set_gdbarch_print_insn (gdbarch, ia64_print_insn);
|
||
set_gdbarch_convert_from_func_ptr_addr (gdbarch, ia64_convert_from_func_ptr_addr);
|
||
|
||
return gdbarch;
|
||
}
|
||
|
||
extern initialize_file_ftype _initialize_ia64_tdep; /* -Wmissing-prototypes */
|
||
|
||
void
|
||
_initialize_ia64_tdep (void)
|
||
{
|
||
register_gdbarch_init (bfd_arch_ia64, ia64_gdbarch_init);
|
||
}
|