mirror of
https://sourceware.org/git/binutils-gdb.git
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aff37fc18f
argument. (dwarf2_frame_default_init_reg): Likewise. (dwarf2_frame_set_init_reg): Update init_reg arg. (dwarf2_frame_init_reg): Take "next_frame" and pass it to ops->init_reg(). (dwarf2_frame_cache): Pass next_frame to dwarf2_frame_init_reg. * dwarf2-frame.h (dwarf2-frame_set_init_reg): Update declaration. * cris-tdep.c (cris_dwarf2_frame_init_reg): Add next_frame arg. * s390-tdep.c (s390_dwarf2_frame_init_reg): Likewise. * sh-tdep.c (sh_dwarf2_frame_init_reg): Likewise. * sparc64-tdep.c (sparc64_dwarf2_frame_init_reg): Likewise. * sparc-tdep.c (sparc32_struct_return_from_sym): New function. (sparc32_frame_cache): Call it. (sparc32_dwarf2_struct_return_p): New function. (sparc_dwarf2_frame_init_reg): Use it to determine if the function returns a structure and thus we have to indicate the return PC and NPC are 4 bytes later than usual.
1482 lines
42 KiB
C
1482 lines
42 KiB
C
/* Target-dependent code for UltraSPARC.
|
||
|
||
Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
|
||
|
||
This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
||
Boston, MA 02110-1301, USA. */
|
||
|
||
#include "defs.h"
|
||
#include "arch-utils.h"
|
||
#include "dwarf2-frame.h"
|
||
#include "floatformat.h"
|
||
#include "frame.h"
|
||
#include "frame-base.h"
|
||
#include "frame-unwind.h"
|
||
#include "gdbcore.h"
|
||
#include "gdbtypes.h"
|
||
#include "inferior.h"
|
||
#include "symtab.h"
|
||
#include "objfiles.h"
|
||
#include "osabi.h"
|
||
#include "regcache.h"
|
||
#include "target.h"
|
||
#include "value.h"
|
||
|
||
#include "gdb_assert.h"
|
||
#include "gdb_string.h"
|
||
|
||
#include "sparc64-tdep.h"
|
||
|
||
/* This file implements the The SPARC 64-bit ABI as defined by the
|
||
section "Low-Level System Information" of the SPARC Compliance
|
||
Definition (SCD) 2.4.1, which is the 64-bit System V psABI for
|
||
SPARC. */
|
||
|
||
/* Please use the sparc32_-prefix for 32-bit specific code, the
|
||
sparc64_-prefix for 64-bit specific code and the sparc_-prefix for
|
||
code can handle both. */
|
||
|
||
/* The functions on this page are intended to be used to classify
|
||
function arguments. */
|
||
|
||
/* Check whether TYPE is "Integral or Pointer". */
|
||
|
||
static int
|
||
sparc64_integral_or_pointer_p (const struct type *type)
|
||
{
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_INT:
|
||
case TYPE_CODE_BOOL:
|
||
case TYPE_CODE_CHAR:
|
||
case TYPE_CODE_ENUM:
|
||
case TYPE_CODE_RANGE:
|
||
{
|
||
int len = TYPE_LENGTH (type);
|
||
gdb_assert (len == 1 || len == 2 || len == 4 || len == 8);
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||
}
|
||
return 1;
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||
case TYPE_CODE_PTR:
|
||
case TYPE_CODE_REF:
|
||
{
|
||
int len = TYPE_LENGTH (type);
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||
gdb_assert (len == 8);
|
||
}
|
||
return 1;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Check whether TYPE is "Floating". */
|
||
|
||
static int
|
||
sparc64_floating_p (const struct type *type)
|
||
{
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_FLT:
|
||
{
|
||
int len = TYPE_LENGTH (type);
|
||
gdb_assert (len == 4 || len == 8 || len == 16);
|
||
}
|
||
return 1;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Check whether TYPE is "Structure or Union". */
|
||
|
||
static int
|
||
sparc64_structure_or_union_p (const struct type *type)
|
||
{
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_STRUCT:
|
||
case TYPE_CODE_UNION:
|
||
return 1;
|
||
default:
|
||
break;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Register information. */
|
||
|
||
struct sparc64_register_info
|
||
{
|
||
char *name;
|
||
struct type **type;
|
||
};
|
||
|
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static struct sparc64_register_info sparc64_register_info[] =
|
||
{
|
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{ "g0", &builtin_type_int64 },
|
||
{ "g1", &builtin_type_int64 },
|
||
{ "g2", &builtin_type_int64 },
|
||
{ "g3", &builtin_type_int64 },
|
||
{ "g4", &builtin_type_int64 },
|
||
{ "g5", &builtin_type_int64 },
|
||
{ "g6", &builtin_type_int64 },
|
||
{ "g7", &builtin_type_int64 },
|
||
|
||
{ "o0", &builtin_type_int64 },
|
||
{ "o1", &builtin_type_int64 },
|
||
{ "o2", &builtin_type_int64 },
|
||
{ "o3", &builtin_type_int64 },
|
||
{ "o4", &builtin_type_int64 },
|
||
{ "o5", &builtin_type_int64 },
|
||
{ "sp", &builtin_type_void_data_ptr },
|
||
{ "o7", &builtin_type_int64 },
|
||
|
||
{ "l0", &builtin_type_int64 },
|
||
{ "l1", &builtin_type_int64 },
|
||
{ "l2", &builtin_type_int64 },
|
||
{ "l3", &builtin_type_int64 },
|
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{ "l4", &builtin_type_int64 },
|
||
{ "l5", &builtin_type_int64 },
|
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{ "l6", &builtin_type_int64 },
|
||
{ "l7", &builtin_type_int64 },
|
||
|
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{ "i0", &builtin_type_int64 },
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{ "i1", &builtin_type_int64 },
|
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{ "i2", &builtin_type_int64 },
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||
{ "i3", &builtin_type_int64 },
|
||
{ "i4", &builtin_type_int64 },
|
||
{ "i5", &builtin_type_int64 },
|
||
{ "fp", &builtin_type_void_data_ptr },
|
||
{ "i7", &builtin_type_int64 },
|
||
|
||
{ "f0", &builtin_type_float },
|
||
{ "f1", &builtin_type_float },
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{ "f2", &builtin_type_float },
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||
{ "f3", &builtin_type_float },
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||
{ "f4", &builtin_type_float },
|
||
{ "f5", &builtin_type_float },
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||
{ "f6", &builtin_type_float },
|
||
{ "f7", &builtin_type_float },
|
||
{ "f8", &builtin_type_float },
|
||
{ "f9", &builtin_type_float },
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||
{ "f10", &builtin_type_float },
|
||
{ "f11", &builtin_type_float },
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||
{ "f12", &builtin_type_float },
|
||
{ "f13", &builtin_type_float },
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||
{ "f14", &builtin_type_float },
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||
{ "f15", &builtin_type_float },
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||
{ "f16", &builtin_type_float },
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||
{ "f17", &builtin_type_float },
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{ "f18", &builtin_type_float },
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||
{ "f19", &builtin_type_float },
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||
{ "f20", &builtin_type_float },
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||
{ "f21", &builtin_type_float },
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{ "f22", &builtin_type_float },
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||
{ "f23", &builtin_type_float },
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||
{ "f24", &builtin_type_float },
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||
{ "f25", &builtin_type_float },
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||
{ "f26", &builtin_type_float },
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||
{ "f27", &builtin_type_float },
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{ "f28", &builtin_type_float },
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||
{ "f29", &builtin_type_float },
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||
{ "f30", &builtin_type_float },
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||
{ "f31", &builtin_type_float },
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||
{ "f32", &builtin_type_double },
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||
{ "f34", &builtin_type_double },
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||
{ "f36", &builtin_type_double },
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||
{ "f38", &builtin_type_double },
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||
{ "f40", &builtin_type_double },
|
||
{ "f42", &builtin_type_double },
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||
{ "f44", &builtin_type_double },
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||
{ "f46", &builtin_type_double },
|
||
{ "f48", &builtin_type_double },
|
||
{ "f50", &builtin_type_double },
|
||
{ "f52", &builtin_type_double },
|
||
{ "f54", &builtin_type_double },
|
||
{ "f56", &builtin_type_double },
|
||
{ "f58", &builtin_type_double },
|
||
{ "f60", &builtin_type_double },
|
||
{ "f62", &builtin_type_double },
|
||
|
||
{ "pc", &builtin_type_void_func_ptr },
|
||
{ "npc", &builtin_type_void_func_ptr },
|
||
|
||
/* This raw register contains the contents of %cwp, %pstate, %asi
|
||
and %ccr as laid out in a %tstate register. */
|
||
/* FIXME: Give it a name until we start using register groups. */
|
||
{ "state", &builtin_type_int64 },
|
||
|
||
{ "fsr", &builtin_type_int64 },
|
||
{ "fprs", &builtin_type_int64 },
|
||
|
||
/* "Although Y is a 64-bit register, its high-order 32 bits are
|
||
reserved and always read as 0." */
|
||
{ "y", &builtin_type_int64 }
|
||
};
|
||
|
||
/* Total number of registers. */
|
||
#define SPARC64_NUM_REGS ARRAY_SIZE (sparc64_register_info)
|
||
|
||
/* We provide the aliases %d0..%d62 and %q0..%q60 for the floating
|
||
registers as "psuedo" registers. */
|
||
|
||
static struct sparc64_register_info sparc64_pseudo_register_info[] =
|
||
{
|
||
{ "cwp", &builtin_type_int64 },
|
||
{ "pstate", &builtin_type_int64 },
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||
{ "asi", &builtin_type_int64 },
|
||
{ "ccr", &builtin_type_int64 },
|
||
|
||
{ "d0", &builtin_type_double },
|
||
{ "d2", &builtin_type_double },
|
||
{ "d4", &builtin_type_double },
|
||
{ "d6", &builtin_type_double },
|
||
{ "d8", &builtin_type_double },
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||
{ "d10", &builtin_type_double },
|
||
{ "d12", &builtin_type_double },
|
||
{ "d14", &builtin_type_double },
|
||
{ "d16", &builtin_type_double },
|
||
{ "d18", &builtin_type_double },
|
||
{ "d20", &builtin_type_double },
|
||
{ "d22", &builtin_type_double },
|
||
{ "d24", &builtin_type_double },
|
||
{ "d26", &builtin_type_double },
|
||
{ "d28", &builtin_type_double },
|
||
{ "d30", &builtin_type_double },
|
||
{ "d32", &builtin_type_double },
|
||
{ "d34", &builtin_type_double },
|
||
{ "d36", &builtin_type_double },
|
||
{ "d38", &builtin_type_double },
|
||
{ "d40", &builtin_type_double },
|
||
{ "d42", &builtin_type_double },
|
||
{ "d44", &builtin_type_double },
|
||
{ "d46", &builtin_type_double },
|
||
{ "d48", &builtin_type_double },
|
||
{ "d50", &builtin_type_double },
|
||
{ "d52", &builtin_type_double },
|
||
{ "d54", &builtin_type_double },
|
||
{ "d56", &builtin_type_double },
|
||
{ "d58", &builtin_type_double },
|
||
{ "d60", &builtin_type_double },
|
||
{ "d62", &builtin_type_double },
|
||
|
||
{ "q0", &builtin_type_long_double },
|
||
{ "q4", &builtin_type_long_double },
|
||
{ "q8", &builtin_type_long_double },
|
||
{ "q12", &builtin_type_long_double },
|
||
{ "q16", &builtin_type_long_double },
|
||
{ "q20", &builtin_type_long_double },
|
||
{ "q24", &builtin_type_long_double },
|
||
{ "q28", &builtin_type_long_double },
|
||
{ "q32", &builtin_type_long_double },
|
||
{ "q36", &builtin_type_long_double },
|
||
{ "q40", &builtin_type_long_double },
|
||
{ "q44", &builtin_type_long_double },
|
||
{ "q48", &builtin_type_long_double },
|
||
{ "q52", &builtin_type_long_double },
|
||
{ "q56", &builtin_type_long_double },
|
||
{ "q60", &builtin_type_long_double }
|
||
};
|
||
|
||
/* Total number of pseudo registers. */
|
||
#define SPARC64_NUM_PSEUDO_REGS ARRAY_SIZE (sparc64_pseudo_register_info)
|
||
|
||
/* Return the name of register REGNUM. */
|
||
|
||
static const char *
|
||
sparc64_register_name (int regnum)
|
||
{
|
||
if (regnum >= 0 && regnum < SPARC64_NUM_REGS)
|
||
return sparc64_register_info[regnum].name;
|
||
|
||
if (regnum >= SPARC64_NUM_REGS
|
||
&& regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS)
|
||
return sparc64_pseudo_register_info[regnum - SPARC64_NUM_REGS].name;
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Return the GDB type object for the "standard" data type of data in
|
||
register REGNUM. */
|
||
|
||
static struct type *
|
||
sparc64_register_type (struct gdbarch *gdbarch, int regnum)
|
||
{
|
||
if (regnum >= SPARC64_NUM_REGS
|
||
&& regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS)
|
||
return *sparc64_pseudo_register_info[regnum - SPARC64_NUM_REGS].type;
|
||
|
||
gdb_assert (regnum >= 0 && regnum < SPARC64_NUM_REGS);
|
||
return *sparc64_register_info[regnum].type;
|
||
}
|
||
|
||
static void
|
||
sparc64_pseudo_register_read (struct gdbarch *gdbarch,
|
||
struct regcache *regcache,
|
||
int regnum, gdb_byte *buf)
|
||
{
|
||
gdb_assert (regnum >= SPARC64_NUM_REGS);
|
||
|
||
if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM)
|
||
{
|
||
regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM);
|
||
regcache_raw_read (regcache, regnum, buf);
|
||
regcache_raw_read (regcache, regnum + 1, buf + 4);
|
||
}
|
||
else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM)
|
||
{
|
||
regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM);
|
||
regcache_raw_read (regcache, regnum, buf);
|
||
}
|
||
else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM)
|
||
{
|
||
regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM);
|
||
regcache_raw_read (regcache, regnum, buf);
|
||
regcache_raw_read (regcache, regnum + 1, buf + 4);
|
||
regcache_raw_read (regcache, regnum + 2, buf + 8);
|
||
regcache_raw_read (regcache, regnum + 3, buf + 12);
|
||
}
|
||
else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM)
|
||
{
|
||
regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM);
|
||
regcache_raw_read (regcache, regnum, buf);
|
||
regcache_raw_read (regcache, regnum + 1, buf + 8);
|
||
}
|
||
else if (regnum == SPARC64_CWP_REGNUM
|
||
|| regnum == SPARC64_PSTATE_REGNUM
|
||
|| regnum == SPARC64_ASI_REGNUM
|
||
|| regnum == SPARC64_CCR_REGNUM)
|
||
{
|
||
ULONGEST state;
|
||
|
||
regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
|
||
switch (regnum)
|
||
{
|
||
case SPARC64_CWP_REGNUM:
|
||
state = (state >> 0) & ((1 << 5) - 1);
|
||
break;
|
||
case SPARC64_PSTATE_REGNUM:
|
||
state = (state >> 8) & ((1 << 12) - 1);
|
||
break;
|
||
case SPARC64_ASI_REGNUM:
|
||
state = (state >> 24) & ((1 << 8) - 1);
|
||
break;
|
||
case SPARC64_CCR_REGNUM:
|
||
state = (state >> 32) & ((1 << 8) - 1);
|
||
break;
|
||
}
|
||
store_unsigned_integer (buf, 8, state);
|
||
}
|
||
}
|
||
|
||
static void
|
||
sparc64_pseudo_register_write (struct gdbarch *gdbarch,
|
||
struct regcache *regcache,
|
||
int regnum, const gdb_byte *buf)
|
||
{
|
||
gdb_assert (regnum >= SPARC64_NUM_REGS);
|
||
|
||
if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM)
|
||
{
|
||
regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM);
|
||
regcache_raw_write (regcache, regnum, buf);
|
||
regcache_raw_write (regcache, regnum + 1, buf + 4);
|
||
}
|
||
else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM)
|
||
{
|
||
regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM);
|
||
regcache_raw_write (regcache, regnum, buf);
|
||
}
|
||
else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM)
|
||
{
|
||
regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM);
|
||
regcache_raw_write (regcache, regnum, buf);
|
||
regcache_raw_write (regcache, regnum + 1, buf + 4);
|
||
regcache_raw_write (regcache, regnum + 2, buf + 8);
|
||
regcache_raw_write (regcache, regnum + 3, buf + 12);
|
||
}
|
||
else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM)
|
||
{
|
||
regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM);
|
||
regcache_raw_write (regcache, regnum, buf);
|
||
regcache_raw_write (regcache, regnum + 1, buf + 8);
|
||
}
|
||
else if (regnum == SPARC64_CWP_REGNUM
|
||
|| regnum == SPARC64_PSTATE_REGNUM
|
||
|| regnum == SPARC64_ASI_REGNUM
|
||
|| regnum == SPARC64_CCR_REGNUM)
|
||
{
|
||
ULONGEST state, bits;
|
||
|
||
regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
|
||
bits = extract_unsigned_integer (buf, 8);
|
||
switch (regnum)
|
||
{
|
||
case SPARC64_CWP_REGNUM:
|
||
state |= ((bits & ((1 << 5) - 1)) << 0);
|
||
break;
|
||
case SPARC64_PSTATE_REGNUM:
|
||
state |= ((bits & ((1 << 12) - 1)) << 8);
|
||
break;
|
||
case SPARC64_ASI_REGNUM:
|
||
state |= ((bits & ((1 << 8) - 1)) << 24);
|
||
break;
|
||
case SPARC64_CCR_REGNUM:
|
||
state |= ((bits & ((1 << 8) - 1)) << 32);
|
||
break;
|
||
}
|
||
regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state);
|
||
}
|
||
}
|
||
|
||
|
||
/* Return PC of first real instruction of the function starting at
|
||
START_PC. */
|
||
|
||
static CORE_ADDR
|
||
sparc64_skip_prologue (CORE_ADDR start_pc)
|
||
{
|
||
struct symtab_and_line sal;
|
||
CORE_ADDR func_start, func_end;
|
||
struct sparc_frame_cache cache;
|
||
|
||
/* This is the preferred method, find the end of the prologue by
|
||
using the debugging information. */
|
||
if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end))
|
||
{
|
||
sal = find_pc_line (func_start, 0);
|
||
|
||
if (sal.end < func_end
|
||
&& start_pc <= sal.end)
|
||
return sal.end;
|
||
}
|
||
|
||
return sparc_analyze_prologue (start_pc, 0xffffffffffffffffULL, &cache);
|
||
}
|
||
|
||
/* Normal frames. */
|
||
|
||
static struct sparc_frame_cache *
|
||
sparc64_frame_cache (struct frame_info *next_frame, void **this_cache)
|
||
{
|
||
return sparc_frame_cache (next_frame, this_cache);
|
||
}
|
||
|
||
static void
|
||
sparc64_frame_this_id (struct frame_info *next_frame, void **this_cache,
|
||
struct frame_id *this_id)
|
||
{
|
||
struct sparc_frame_cache *cache =
|
||
sparc64_frame_cache (next_frame, this_cache);
|
||
|
||
/* This marks the outermost frame. */
|
||
if (cache->base == 0)
|
||
return;
|
||
|
||
(*this_id) = frame_id_build (cache->base, cache->pc);
|
||
}
|
||
|
||
static void
|
||
sparc64_frame_prev_register (struct frame_info *next_frame, void **this_cache,
|
||
int regnum, int *optimizedp,
|
||
enum lval_type *lvalp, CORE_ADDR *addrp,
|
||
int *realnump, gdb_byte *valuep)
|
||
{
|
||
struct sparc_frame_cache *cache =
|
||
sparc64_frame_cache (next_frame, this_cache);
|
||
|
||
if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM)
|
||
{
|
||
*optimizedp = 0;
|
||
*lvalp = not_lval;
|
||
*addrp = 0;
|
||
*realnump = -1;
|
||
if (valuep)
|
||
{
|
||
CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0;
|
||
|
||
regnum = cache->frameless_p ? SPARC_O7_REGNUM : SPARC_I7_REGNUM;
|
||
pc += frame_unwind_register_unsigned (next_frame, regnum) + 8;
|
||
store_unsigned_integer (valuep, 8, pc);
|
||
}
|
||
return;
|
||
}
|
||
|
||
/* Handle StackGhost. */
|
||
{
|
||
ULONGEST wcookie = sparc_fetch_wcookie ();
|
||
|
||
if (wcookie != 0 && !cache->frameless_p && regnum == SPARC_I7_REGNUM)
|
||
{
|
||
*optimizedp = 0;
|
||
*lvalp = not_lval;
|
||
*addrp = 0;
|
||
*realnump = -1;
|
||
if (valuep)
|
||
{
|
||
CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8;
|
||
ULONGEST i7;
|
||
|
||
/* Read the value in from memory. */
|
||
i7 = get_frame_memory_unsigned (next_frame, addr, 8);
|
||
store_unsigned_integer (valuep, 8, i7 ^ wcookie);
|
||
}
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* The previous frame's `local' and `in' registers have been saved
|
||
in the register save area. */
|
||
if (!cache->frameless_p
|
||
&& regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM)
|
||
{
|
||
*optimizedp = 0;
|
||
*lvalp = lval_memory;
|
||
*addrp = cache->base + (regnum - SPARC_L0_REGNUM) * 8;
|
||
*realnump = -1;
|
||
if (valuep)
|
||
{
|
||
struct gdbarch *gdbarch = get_frame_arch (next_frame);
|
||
|
||
/* Read the value in from memory. */
|
||
read_memory (*addrp, valuep, register_size (gdbarch, regnum));
|
||
}
|
||
return;
|
||
}
|
||
|
||
/* The previous frame's `out' registers are accessable as the
|
||
current frame's `in' registers. */
|
||
if (!cache->frameless_p
|
||
&& regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
|
||
regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM);
|
||
|
||
*optimizedp = 0;
|
||
*lvalp = lval_register;
|
||
*addrp = 0;
|
||
*realnump = regnum;
|
||
if (valuep)
|
||
frame_unwind_register (next_frame, regnum, valuep);
|
||
}
|
||
|
||
static const struct frame_unwind sparc64_frame_unwind =
|
||
{
|
||
NORMAL_FRAME,
|
||
sparc64_frame_this_id,
|
||
sparc64_frame_prev_register
|
||
};
|
||
|
||
static const struct frame_unwind *
|
||
sparc64_frame_sniffer (struct frame_info *next_frame)
|
||
{
|
||
return &sparc64_frame_unwind;
|
||
}
|
||
|
||
|
||
static CORE_ADDR
|
||
sparc64_frame_base_address (struct frame_info *next_frame, void **this_cache)
|
||
{
|
||
struct sparc_frame_cache *cache =
|
||
sparc64_frame_cache (next_frame, this_cache);
|
||
|
||
return cache->base;
|
||
}
|
||
|
||
static const struct frame_base sparc64_frame_base =
|
||
{
|
||
&sparc64_frame_unwind,
|
||
sparc64_frame_base_address,
|
||
sparc64_frame_base_address,
|
||
sparc64_frame_base_address
|
||
};
|
||
|
||
/* Check whether TYPE must be 16-byte aligned. */
|
||
|
||
static int
|
||
sparc64_16_byte_align_p (struct type *type)
|
||
{
|
||
if (sparc64_floating_p (type) && TYPE_LENGTH (type) == 16)
|
||
return 1;
|
||
|
||
if (sparc64_structure_or_union_p (type))
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < TYPE_NFIELDS (type); i++)
|
||
{
|
||
struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
|
||
|
||
if (sparc64_16_byte_align_p (subtype))
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Store floating fields of element ELEMENT of an "parameter array"
|
||
that has type TYPE and is stored at BITPOS in VALBUF in the
|
||
apropriate registers of REGCACHE. This function can be called
|
||
recursively and therefore handles floating types in addition to
|
||
structures. */
|
||
|
||
static void
|
||
sparc64_store_floating_fields (struct regcache *regcache, struct type *type,
|
||
const gdb_byte *valbuf, int element, int bitpos)
|
||
{
|
||
gdb_assert (element < 16);
|
||
|
||
if (sparc64_floating_p (type))
|
||
{
|
||
int len = TYPE_LENGTH (type);
|
||
int regnum;
|
||
|
||
if (len == 16)
|
||
{
|
||
gdb_assert (bitpos == 0);
|
||
gdb_assert ((element % 2) == 0);
|
||
|
||
regnum = SPARC64_Q0_REGNUM + element / 2;
|
||
regcache_cooked_write (regcache, regnum, valbuf);
|
||
}
|
||
else if (len == 8)
|
||
{
|
||
gdb_assert (bitpos == 0 || bitpos == 64);
|
||
|
||
regnum = SPARC64_D0_REGNUM + element + bitpos / 64;
|
||
regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8));
|
||
}
|
||
else
|
||
{
|
||
gdb_assert (len == 4);
|
||
gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 128);
|
||
|
||
regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32;
|
||
regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8));
|
||
}
|
||
}
|
||
else if (sparc64_structure_or_union_p (type))
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < TYPE_NFIELDS (type); i++)
|
||
{
|
||
struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
|
||
int subpos = bitpos + TYPE_FIELD_BITPOS (type, i);
|
||
|
||
sparc64_store_floating_fields (regcache, subtype, valbuf,
|
||
element, subpos);
|
||
}
|
||
|
||
/* GCC has an interesting bug. If TYPE is a structure that has
|
||
a single `float' member, GCC doesn't treat it as a structure
|
||
at all, but rather as an ordinary `float' argument. This
|
||
argument will be stored in %f1, as required by the psABI.
|
||
However, as a member of a structure the psABI requires it to
|
||
be stored in %f0. This bug is present in GCC 3.3.2, but
|
||
probably in older releases to. To appease GCC, if a
|
||
structure has only a single `float' member, we store its
|
||
value in %f1 too (we already have stored in %f0). */
|
||
if (TYPE_NFIELDS (type) == 1)
|
||
{
|
||
struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0));
|
||
|
||
if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4)
|
||
regcache_cooked_write (regcache, SPARC_F1_REGNUM, valbuf);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Fetch floating fields from a variable of type TYPE from the
|
||
appropriate registers for BITPOS in REGCACHE and store it at BITPOS
|
||
in VALBUF. This function can be called recursively and therefore
|
||
handles floating types in addition to structures. */
|
||
|
||
static void
|
||
sparc64_extract_floating_fields (struct regcache *regcache, struct type *type,
|
||
gdb_byte *valbuf, int bitpos)
|
||
{
|
||
if (sparc64_floating_p (type))
|
||
{
|
||
int len = TYPE_LENGTH (type);
|
||
int regnum;
|
||
|
||
if (len == 16)
|
||
{
|
||
gdb_assert (bitpos == 0 || bitpos == 128);
|
||
|
||
regnum = SPARC64_Q0_REGNUM + bitpos / 128;
|
||
regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
|
||
}
|
||
else if (len == 8)
|
||
{
|
||
gdb_assert (bitpos % 64 == 0 && bitpos >= 0 && bitpos < 256);
|
||
|
||
regnum = SPARC64_D0_REGNUM + bitpos / 64;
|
||
regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
|
||
}
|
||
else
|
||
{
|
||
gdb_assert (len == 4);
|
||
gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 256);
|
||
|
||
regnum = SPARC_F0_REGNUM + bitpos / 32;
|
||
regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
|
||
}
|
||
}
|
||
else if (sparc64_structure_or_union_p (type))
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < TYPE_NFIELDS (type); i++)
|
||
{
|
||
struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
|
||
int subpos = bitpos + TYPE_FIELD_BITPOS (type, i);
|
||
|
||
sparc64_extract_floating_fields (regcache, subtype, valbuf, subpos);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Store the NARGS arguments ARGS and STRUCT_ADDR (if STRUCT_RETURN is
|
||
non-zero) in REGCACHE and on the stack (starting from address SP). */
|
||
|
||
static CORE_ADDR
|
||
sparc64_store_arguments (struct regcache *regcache, int nargs,
|
||
struct value **args, CORE_ADDR sp,
|
||
int struct_return, CORE_ADDR struct_addr)
|
||
{
|
||
/* Number of extended words in the "parameter array". */
|
||
int num_elements = 0;
|
||
int element = 0;
|
||
int i;
|
||
|
||
/* Take BIAS into account. */
|
||
sp += BIAS;
|
||
|
||
/* First we calculate the number of extended words in the "parameter
|
||
array". While doing so we also convert some of the arguments. */
|
||
|
||
if (struct_return)
|
||
num_elements++;
|
||
|
||
for (i = 0; i < nargs; i++)
|
||
{
|
||
struct type *type = value_type (args[i]);
|
||
int len = TYPE_LENGTH (type);
|
||
|
||
if (sparc64_structure_or_union_p (type))
|
||
{
|
||
/* Structure or Union arguments. */
|
||
if (len <= 16)
|
||
{
|
||
if (num_elements % 2 && sparc64_16_byte_align_p (type))
|
||
num_elements++;
|
||
num_elements += ((len + 7) / 8);
|
||
}
|
||
else
|
||
{
|
||
/* The psABI says that "Structures or unions larger than
|
||
sixteen bytes are copied by the caller and passed
|
||
indirectly; the caller will pass the address of a
|
||
correctly aligned structure value. This sixty-four
|
||
bit address will occupy one word in the parameter
|
||
array, and may be promoted to an %o register like any
|
||
other pointer value." Allocate memory for these
|
||
values on the stack. */
|
||
sp -= len;
|
||
|
||
/* Use 16-byte alignment for these values. That's
|
||
always correct, and wasting a few bytes shouldn't be
|
||
a problem. */
|
||
sp &= ~0xf;
|
||
|
||
write_memory (sp, value_contents (args[i]), len);
|
||
args[i] = value_from_pointer (lookup_pointer_type (type), sp);
|
||
num_elements++;
|
||
}
|
||
}
|
||
else if (sparc64_floating_p (type))
|
||
{
|
||
/* Floating arguments. */
|
||
|
||
if (len == 16)
|
||
{
|
||
/* The psABI says that "Each quad-precision parameter
|
||
value will be assigned to two extended words in the
|
||
parameter array. */
|
||
num_elements += 2;
|
||
|
||
/* The psABI says that "Long doubles must be
|
||
quad-aligned, and thus a hole might be introduced
|
||
into the parameter array to force alignment." Skip
|
||
an element if necessary. */
|
||
if (num_elements % 2)
|
||
num_elements++;
|
||
}
|
||
else
|
||
num_elements++;
|
||
}
|
||
else
|
||
{
|
||
/* Integral and pointer arguments. */
|
||
gdb_assert (sparc64_integral_or_pointer_p (type));
|
||
|
||
/* The psABI says that "Each argument value of integral type
|
||
smaller than an extended word will be widened by the
|
||
caller to an extended word according to the signed-ness
|
||
of the argument type." */
|
||
if (len < 8)
|
||
args[i] = value_cast (builtin_type_int64, args[i]);
|
||
num_elements++;
|
||
}
|
||
}
|
||
|
||
/* Allocate the "parameter array". */
|
||
sp -= num_elements * 8;
|
||
|
||
/* The psABI says that "Every stack frame must be 16-byte aligned." */
|
||
sp &= ~0xf;
|
||
|
||
/* Now we store the arguments in to the "paramater array". Some
|
||
Integer or Pointer arguments and Structure or Union arguments
|
||
will be passed in %o registers. Some Floating arguments and
|
||
floating members of structures are passed in floating-point
|
||
registers. However, for functions with variable arguments,
|
||
floating arguments are stored in an %0 register, and for
|
||
functions without a prototype floating arguments are stored in
|
||
both a floating-point and an %o registers, or a floating-point
|
||
register and memory. To simplify the logic here we always pass
|
||
arguments in memory, an %o register, and a floating-point
|
||
register if appropriate. This should be no problem since the
|
||
contents of any unused memory or registers in the "parameter
|
||
array" are undefined. */
|
||
|
||
if (struct_return)
|
||
{
|
||
regcache_cooked_write_unsigned (regcache, SPARC_O0_REGNUM, struct_addr);
|
||
element++;
|
||
}
|
||
|
||
for (i = 0; i < nargs; i++)
|
||
{
|
||
const gdb_byte *valbuf = value_contents (args[i]);
|
||
struct type *type = value_type (args[i]);
|
||
int len = TYPE_LENGTH (type);
|
||
int regnum = -1;
|
||
gdb_byte buf[16];
|
||
|
||
if (sparc64_structure_or_union_p (type))
|
||
{
|
||
/* Structure or Union arguments. */
|
||
gdb_assert (len <= 16);
|
||
memset (buf, 0, sizeof (buf));
|
||
valbuf = memcpy (buf, valbuf, len);
|
||
|
||
if (element % 2 && sparc64_16_byte_align_p (type))
|
||
element++;
|
||
|
||
if (element < 6)
|
||
{
|
||
regnum = SPARC_O0_REGNUM + element;
|
||
if (len > 8 && element < 5)
|
||
regcache_cooked_write (regcache, regnum + 1, valbuf + 8);
|
||
}
|
||
|
||
if (element < 16)
|
||
sparc64_store_floating_fields (regcache, type, valbuf, element, 0);
|
||
}
|
||
else if (sparc64_floating_p (type))
|
||
{
|
||
/* Floating arguments. */
|
||
if (len == 16)
|
||
{
|
||
if (element % 2)
|
||
element++;
|
||
if (element < 16)
|
||
regnum = SPARC64_Q0_REGNUM + element / 2;
|
||
}
|
||
else if (len == 8)
|
||
{
|
||
if (element < 16)
|
||
regnum = SPARC64_D0_REGNUM + element;
|
||
}
|
||
else
|
||
{
|
||
/* The psABI says "Each single-precision parameter value
|
||
will be assigned to one extended word in the
|
||
parameter array, and right-justified within that
|
||
word; the left half (even floatregister) is
|
||
undefined." Even though the psABI says that "the
|
||
left half is undefined", set it to zero here. */
|
||
memset (buf, 0, 4);
|
||
memcpy (buf + 4, valbuf, 4);
|
||
valbuf = buf;
|
||
len = 8;
|
||
if (element < 16)
|
||
regnum = SPARC64_D0_REGNUM + element;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Integral and pointer arguments. */
|
||
gdb_assert (len == 8);
|
||
if (element < 6)
|
||
regnum = SPARC_O0_REGNUM + element;
|
||
}
|
||
|
||
if (regnum != -1)
|
||
{
|
||
regcache_cooked_write (regcache, regnum, valbuf);
|
||
|
||
/* If we're storing the value in a floating-point register,
|
||
also store it in the corresponding %0 register(s). */
|
||
if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D10_REGNUM)
|
||
{
|
||
gdb_assert (element < 6);
|
||
regnum = SPARC_O0_REGNUM + element;
|
||
regcache_cooked_write (regcache, regnum, valbuf);
|
||
}
|
||
else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q8_REGNUM)
|
||
{
|
||
gdb_assert (element < 6);
|
||
regnum = SPARC_O0_REGNUM + element;
|
||
regcache_cooked_write (regcache, regnum, valbuf);
|
||
regcache_cooked_write (regcache, regnum + 1, valbuf + 8);
|
||
}
|
||
}
|
||
|
||
/* Always store the argument in memory. */
|
||
write_memory (sp + element * 8, valbuf, len);
|
||
element += ((len + 7) / 8);
|
||
}
|
||
|
||
gdb_assert (element == num_elements);
|
||
|
||
/* Take BIAS into account. */
|
||
sp -= BIAS;
|
||
return sp;
|
||
}
|
||
|
||
static CORE_ADDR
|
||
sparc64_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
|
||
struct regcache *regcache, CORE_ADDR bp_addr,
|
||
int nargs, struct value **args, CORE_ADDR sp,
|
||
int struct_return, CORE_ADDR struct_addr)
|
||
{
|
||
/* Set return address. */
|
||
regcache_cooked_write_unsigned (regcache, SPARC_O7_REGNUM, bp_addr - 8);
|
||
|
||
/* Set up function arguments. */
|
||
sp = sparc64_store_arguments (regcache, nargs, args, sp,
|
||
struct_return, struct_addr);
|
||
|
||
/* Allocate the register save area. */
|
||
sp -= 16 * 8;
|
||
|
||
/* Stack should be 16-byte aligned at this point. */
|
||
gdb_assert ((sp + BIAS) % 16 == 0);
|
||
|
||
/* Finally, update the stack pointer. */
|
||
regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp);
|
||
|
||
return sp + BIAS;
|
||
}
|
||
|
||
|
||
/* Extract from an array REGBUF containing the (raw) register state, a
|
||
function return value of TYPE, and copy that into VALBUF. */
|
||
|
||
static void
|
||
sparc64_extract_return_value (struct type *type, struct regcache *regcache,
|
||
gdb_byte *valbuf)
|
||
{
|
||
int len = TYPE_LENGTH (type);
|
||
gdb_byte buf[32];
|
||
int i;
|
||
|
||
if (sparc64_structure_or_union_p (type))
|
||
{
|
||
/* Structure or Union return values. */
|
||
gdb_assert (len <= 32);
|
||
|
||
for (i = 0; i < ((len + 7) / 8); i++)
|
||
regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
|
||
if (TYPE_CODE (type) != TYPE_CODE_UNION)
|
||
sparc64_extract_floating_fields (regcache, type, buf, 0);
|
||
memcpy (valbuf, buf, len);
|
||
}
|
||
else if (sparc64_floating_p (type))
|
||
{
|
||
/* Floating return values. */
|
||
for (i = 0; i < len / 4; i++)
|
||
regcache_cooked_read (regcache, SPARC_F0_REGNUM + i, buf + i * 4);
|
||
memcpy (valbuf, buf, len);
|
||
}
|
||
else
|
||
{
|
||
/* Integral and pointer return values. */
|
||
gdb_assert (sparc64_integral_or_pointer_p (type));
|
||
|
||
/* Just stripping off any unused bytes should preserve the
|
||
signed-ness just fine. */
|
||
regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf);
|
||
memcpy (valbuf, buf + 8 - len, len);
|
||
}
|
||
}
|
||
|
||
/* Write into the appropriate registers a function return value stored
|
||
in VALBUF of type TYPE. */
|
||
|
||
static void
|
||
sparc64_store_return_value (struct type *type, struct regcache *regcache,
|
||
const gdb_byte *valbuf)
|
||
{
|
||
int len = TYPE_LENGTH (type);
|
||
gdb_byte buf[16];
|
||
int i;
|
||
|
||
if (sparc64_structure_or_union_p (type))
|
||
{
|
||
/* Structure or Union return values. */
|
||
gdb_assert (len <= 32);
|
||
|
||
/* Simplify matters by storing the complete value (including
|
||
floating members) into %o0 and %o1. Floating members are
|
||
also store in the appropriate floating-point registers. */
|
||
memset (buf, 0, sizeof (buf));
|
||
memcpy (buf, valbuf, len);
|
||
for (i = 0; i < ((len + 7) / 8); i++)
|
||
regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
|
||
if (TYPE_CODE (type) != TYPE_CODE_UNION)
|
||
sparc64_store_floating_fields (regcache, type, buf, 0, 0);
|
||
}
|
||
else if (sparc64_floating_p (type))
|
||
{
|
||
/* Floating return values. */
|
||
memcpy (buf, valbuf, len);
|
||
for (i = 0; i < len / 4; i++)
|
||
regcache_cooked_write (regcache, SPARC_F0_REGNUM + i, buf + i * 4);
|
||
}
|
||
else
|
||
{
|
||
/* Integral and pointer return values. */
|
||
gdb_assert (sparc64_integral_or_pointer_p (type));
|
||
|
||
/* ??? Do we need to do any sign-extension here? */
|
||
memset (buf, 0, 8);
|
||
memcpy (buf + 8 - len, valbuf, len);
|
||
regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf);
|
||
}
|
||
}
|
||
|
||
static enum return_value_convention
|
||
sparc64_return_value (struct gdbarch *gdbarch, struct type *type,
|
||
struct regcache *regcache, gdb_byte *readbuf,
|
||
const gdb_byte *writebuf)
|
||
{
|
||
if (TYPE_LENGTH (type) > 32)
|
||
return RETURN_VALUE_STRUCT_CONVENTION;
|
||
|
||
if (readbuf)
|
||
sparc64_extract_return_value (type, regcache, readbuf);
|
||
if (writebuf)
|
||
sparc64_store_return_value (type, regcache, writebuf);
|
||
|
||
return RETURN_VALUE_REGISTER_CONVENTION;
|
||
}
|
||
|
||
|
||
static void
|
||
sparc64_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
|
||
struct dwarf2_frame_state_reg *reg,
|
||
struct frame_info *next_frame)
|
||
{
|
||
switch (regnum)
|
||
{
|
||
case SPARC_G0_REGNUM:
|
||
/* Since %g0 is always zero, there is no point in saving it, and
|
||
people will be inclined omit it from the CFI. Make sure we
|
||
don't warn about that. */
|
||
reg->how = DWARF2_FRAME_REG_SAME_VALUE;
|
||
break;
|
||
case SPARC_SP_REGNUM:
|
||
reg->how = DWARF2_FRAME_REG_CFA;
|
||
break;
|
||
case SPARC64_PC_REGNUM:
|
||
reg->how = DWARF2_FRAME_REG_RA_OFFSET;
|
||
reg->loc.offset = 8;
|
||
break;
|
||
case SPARC64_NPC_REGNUM:
|
||
reg->how = DWARF2_FRAME_REG_RA_OFFSET;
|
||
reg->loc.offset = 12;
|
||
break;
|
||
}
|
||
}
|
||
|
||
void
|
||
sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
|
||
{
|
||
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
|
||
|
||
tdep->pc_regnum = SPARC64_PC_REGNUM;
|
||
tdep->npc_regnum = SPARC64_NPC_REGNUM;
|
||
|
||
/* This is what all the fuss is about. */
|
||
set_gdbarch_long_bit (gdbarch, 64);
|
||
set_gdbarch_long_long_bit (gdbarch, 64);
|
||
set_gdbarch_ptr_bit (gdbarch, 64);
|
||
|
||
set_gdbarch_num_regs (gdbarch, SPARC64_NUM_REGS);
|
||
set_gdbarch_register_name (gdbarch, sparc64_register_name);
|
||
set_gdbarch_register_type (gdbarch, sparc64_register_type);
|
||
set_gdbarch_num_pseudo_regs (gdbarch, SPARC64_NUM_PSEUDO_REGS);
|
||
set_gdbarch_pseudo_register_read (gdbarch, sparc64_pseudo_register_read);
|
||
set_gdbarch_pseudo_register_write (gdbarch, sparc64_pseudo_register_write);
|
||
|
||
/* Register numbers of various important registers. */
|
||
set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); /* %pc */
|
||
|
||
/* Call dummy code. */
|
||
set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
|
||
set_gdbarch_push_dummy_code (gdbarch, NULL);
|
||
set_gdbarch_push_dummy_call (gdbarch, sparc64_push_dummy_call);
|
||
|
||
set_gdbarch_return_value (gdbarch, sparc64_return_value);
|
||
set_gdbarch_stabs_argument_has_addr
|
||
(gdbarch, default_stabs_argument_has_addr);
|
||
|
||
set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue);
|
||
|
||
/* Hook in the DWARF CFI frame unwinder. */
|
||
dwarf2_frame_set_init_reg (gdbarch, sparc64_dwarf2_frame_init_reg);
|
||
/* FIXME: kettenis/20050423: Don't enable the unwinder until the
|
||
StackGhost issues have been resolved. */
|
||
|
||
frame_unwind_append_sniffer (gdbarch, sparc64_frame_sniffer);
|
||
frame_base_set_default (gdbarch, &sparc64_frame_base);
|
||
}
|
||
|
||
|
||
/* Helper functions for dealing with register sets. */
|
||
|
||
#define TSTATE_CWP 0x000000000000001fULL
|
||
#define TSTATE_ICC 0x0000000f00000000ULL
|
||
#define TSTATE_XCC 0x000000f000000000ULL
|
||
|
||
#define PSR_S 0x00000080
|
||
#define PSR_ICC 0x00f00000
|
||
#define PSR_VERS 0x0f000000
|
||
#define PSR_IMPL 0xf0000000
|
||
#define PSR_V8PLUS 0xff000000
|
||
#define PSR_XCC 0x000f0000
|
||
|
||
void
|
||
sparc64_supply_gregset (const struct sparc_gregset *gregset,
|
||
struct regcache *regcache,
|
||
int regnum, const void *gregs)
|
||
{
|
||
int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
|
||
const gdb_byte *regs = gregs;
|
||
int i;
|
||
|
||
if (sparc32)
|
||
{
|
||
if (regnum == SPARC32_PSR_REGNUM || regnum == -1)
|
||
{
|
||
int offset = gregset->r_tstate_offset;
|
||
ULONGEST tstate, psr;
|
||
gdb_byte buf[4];
|
||
|
||
tstate = extract_unsigned_integer (regs + offset, 8);
|
||
psr = ((tstate & TSTATE_CWP) | PSR_S | ((tstate & TSTATE_ICC) >> 12)
|
||
| ((tstate & TSTATE_XCC) >> 20) | PSR_V8PLUS);
|
||
store_unsigned_integer (buf, 4, psr);
|
||
regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, buf);
|
||
}
|
||
|
||
if (regnum == SPARC32_PC_REGNUM || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC32_PC_REGNUM,
|
||
regs + gregset->r_pc_offset + 4);
|
||
|
||
if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC32_NPC_REGNUM,
|
||
regs + gregset->r_npc_offset + 4);
|
||
|
||
if (regnum == SPARC32_Y_REGNUM || regnum == -1)
|
||
{
|
||
int offset = gregset->r_y_offset + 8 - gregset->r_y_size;
|
||
regcache_raw_supply (regcache, SPARC32_Y_REGNUM, regs + offset);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (regnum == SPARC64_STATE_REGNUM || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC64_STATE_REGNUM,
|
||
regs + gregset->r_tstate_offset);
|
||
|
||
if (regnum == SPARC64_PC_REGNUM || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC64_PC_REGNUM,
|
||
regs + gregset->r_pc_offset);
|
||
|
||
if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC64_NPC_REGNUM,
|
||
regs + gregset->r_npc_offset);
|
||
|
||
if (regnum == SPARC64_Y_REGNUM || regnum == -1)
|
||
{
|
||
gdb_byte buf[8];
|
||
|
||
memset (buf, 0, 8);
|
||
memcpy (buf + 8 - gregset->r_y_size,
|
||
regs + gregset->r_y_offset, gregset->r_y_size);
|
||
regcache_raw_supply (regcache, SPARC64_Y_REGNUM, buf);
|
||
}
|
||
|
||
if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1)
|
||
&& gregset->r_fprs_offset != -1)
|
||
regcache_raw_supply (regcache, SPARC64_FPRS_REGNUM,
|
||
regs + gregset->r_fprs_offset);
|
||
}
|
||
|
||
if (regnum == SPARC_G0_REGNUM || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC_G0_REGNUM, NULL);
|
||
|
||
if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
|
||
{
|
||
int offset = gregset->r_g1_offset;
|
||
|
||
if (sparc32)
|
||
offset += 4;
|
||
|
||
for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++)
|
||
{
|
||
if (regnum == i || regnum == -1)
|
||
regcache_raw_supply (regcache, i, regs + offset);
|
||
offset += 8;
|
||
}
|
||
}
|
||
|
||
if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1)
|
||
{
|
||
/* Not all of the register set variants include Locals and
|
||
Inputs. For those that don't, we read them off the stack. */
|
||
if (gregset->r_l0_offset == -1)
|
||
{
|
||
ULONGEST sp;
|
||
|
||
regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
|
||
sparc_supply_rwindow (regcache, sp, regnum);
|
||
}
|
||
else
|
||
{
|
||
int offset = gregset->r_l0_offset;
|
||
|
||
if (sparc32)
|
||
offset += 4;
|
||
|
||
for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++)
|
||
{
|
||
if (regnum == i || regnum == -1)
|
||
regcache_raw_supply (regcache, i, regs + offset);
|
||
offset += 8;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
sparc64_collect_gregset (const struct sparc_gregset *gregset,
|
||
const struct regcache *regcache,
|
||
int regnum, void *gregs)
|
||
{
|
||
int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
|
||
gdb_byte *regs = gregs;
|
||
int i;
|
||
|
||
if (sparc32)
|
||
{
|
||
if (regnum == SPARC32_PSR_REGNUM || regnum == -1)
|
||
{
|
||
int offset = gregset->r_tstate_offset;
|
||
ULONGEST tstate, psr;
|
||
gdb_byte buf[8];
|
||
|
||
tstate = extract_unsigned_integer (regs + offset, 8);
|
||
regcache_raw_collect (regcache, SPARC32_PSR_REGNUM, buf);
|
||
psr = extract_unsigned_integer (buf, 4);
|
||
tstate |= (psr & PSR_ICC) << 12;
|
||
if ((psr & (PSR_VERS | PSR_IMPL)) == PSR_V8PLUS)
|
||
tstate |= (psr & PSR_XCC) << 20;
|
||
store_unsigned_integer (buf, 8, tstate);
|
||
memcpy (regs + offset, buf, 8);
|
||
}
|
||
|
||
if (regnum == SPARC32_PC_REGNUM || regnum == -1)
|
||
regcache_raw_collect (regcache, SPARC32_PC_REGNUM,
|
||
regs + gregset->r_pc_offset + 4);
|
||
|
||
if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
|
||
regcache_raw_collect (regcache, SPARC32_NPC_REGNUM,
|
||
regs + gregset->r_npc_offset + 4);
|
||
|
||
if (regnum == SPARC32_Y_REGNUM || regnum == -1)
|
||
{
|
||
int offset = gregset->r_y_offset + 8 - gregset->r_y_size;
|
||
regcache_raw_collect (regcache, SPARC32_Y_REGNUM, regs + offset);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (regnum == SPARC64_STATE_REGNUM || regnum == -1)
|
||
regcache_raw_collect (regcache, SPARC64_STATE_REGNUM,
|
||
regs + gregset->r_tstate_offset);
|
||
|
||
if (regnum == SPARC64_PC_REGNUM || regnum == -1)
|
||
regcache_raw_collect (regcache, SPARC64_PC_REGNUM,
|
||
regs + gregset->r_pc_offset);
|
||
|
||
if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
|
||
regcache_raw_collect (regcache, SPARC64_NPC_REGNUM,
|
||
regs + gregset->r_npc_offset);
|
||
|
||
if (regnum == SPARC64_Y_REGNUM || regnum == -1)
|
||
{
|
||
gdb_byte buf[8];
|
||
|
||
regcache_raw_collect (regcache, SPARC64_Y_REGNUM, buf);
|
||
memcpy (regs + gregset->r_y_offset,
|
||
buf + 8 - gregset->r_y_size, gregset->r_y_size);
|
||
}
|
||
|
||
if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1)
|
||
&& gregset->r_fprs_offset != -1)
|
||
regcache_raw_collect (regcache, SPARC64_FPRS_REGNUM,
|
||
regs + gregset->r_fprs_offset);
|
||
|
||
}
|
||
|
||
if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
|
||
{
|
||
int offset = gregset->r_g1_offset;
|
||
|
||
if (sparc32)
|
||
offset += 4;
|
||
|
||
/* %g0 is always zero. */
|
||
for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++)
|
||
{
|
||
if (regnum == i || regnum == -1)
|
||
regcache_raw_collect (regcache, i, regs + offset);
|
||
offset += 8;
|
||
}
|
||
}
|
||
|
||
if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1)
|
||
{
|
||
/* Not all of the register set variants include Locals and
|
||
Inputs. For those that don't, we read them off the stack. */
|
||
if (gregset->r_l0_offset != -1)
|
||
{
|
||
int offset = gregset->r_l0_offset;
|
||
|
||
if (sparc32)
|
||
offset += 4;
|
||
|
||
for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++)
|
||
{
|
||
if (regnum == i || regnum == -1)
|
||
regcache_raw_collect (regcache, i, regs + offset);
|
||
offset += 8;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
sparc64_supply_fpregset (struct regcache *regcache,
|
||
int regnum, const void *fpregs)
|
||
{
|
||
int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
|
||
const gdb_byte *regs = fpregs;
|
||
int i;
|
||
|
||
for (i = 0; i < 32; i++)
|
||
{
|
||
if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC_F0_REGNUM + i, regs + (i * 4));
|
||
}
|
||
|
||
if (sparc32)
|
||
{
|
||
if (regnum == SPARC32_FSR_REGNUM || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC32_FSR_REGNUM,
|
||
regs + (32 * 4) + (16 * 8) + 4);
|
||
}
|
||
else
|
||
{
|
||
for (i = 0; i < 16; i++)
|
||
{
|
||
if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC64_F32_REGNUM + i,
|
||
regs + (32 * 4) + (i * 8));
|
||
}
|
||
|
||
if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
|
||
regcache_raw_supply (regcache, SPARC64_FSR_REGNUM,
|
||
regs + (32 * 4) + (16 * 8));
|
||
}
|
||
}
|
||
|
||
void
|
||
sparc64_collect_fpregset (const struct regcache *regcache,
|
||
int regnum, void *fpregs)
|
||
{
|
||
int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32);
|
||
gdb_byte *regs = fpregs;
|
||
int i;
|
||
|
||
for (i = 0; i < 32; i++)
|
||
{
|
||
if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
|
||
regcache_raw_collect (regcache, SPARC_F0_REGNUM + i, regs + (i * 4));
|
||
}
|
||
|
||
if (sparc32)
|
||
{
|
||
if (regnum == SPARC32_FSR_REGNUM || regnum == -1)
|
||
regcache_raw_collect (regcache, SPARC32_FSR_REGNUM,
|
||
regs + (32 * 4) + (16 * 8) + 4);
|
||
}
|
||
else
|
||
{
|
||
for (i = 0; i < 16; i++)
|
||
{
|
||
if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
|
||
regcache_raw_collect (regcache, SPARC64_F32_REGNUM + i,
|
||
regs + (32 * 4) + (i * 8));
|
||
}
|
||
|
||
if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
|
||
regcache_raw_collect (regcache, SPARC64_FSR_REGNUM,
|
||
regs + (32 * 4) + (16 * 8));
|
||
}
|
||
}
|