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/* Target-dependent code for FreeBSD/sparc64.
Copyright 2003 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "gdbcore.h"
#include "osabi.h"
#include "regcache.h"
#include "target.h"
#include "gdb_string.h"
#include "sparc64-tdep.h"
/* From <machine/reg.h>. */
/* Offset of registers in `struct reg'. */
int sparc64fbsd_r_global_offset = (0 * 8);
int sparc64fbsd_r_out_offset = (8 * 8);
int sparc64fbsd_r_fprs_offset = (16 * 8);
int sparc64fbsd_r_tnpc_offset = (24 * 8);
int sparc64fbsd_r_tpc_offset = (25 * 8);
int sparc64fbsd_r_tstate_offset = (26 * 8);
int sparc64fbsd_r_y_offset = (28 * 8);
/* Size of `struct reg' and `struct fpreg'. */
int sparc64fbsd_sizeof_struct_reg = 256;
int sparc64fbsd_sizeof_struct_fpreg = 272;
void
sparc64fbsd_supply_reg (const char *regs, int regnum)
{
char buf[8];
int i;
if (regnum == SPARC64_PC_REGNUM || regnum == -1)
supply_register (SPARC64_PC_REGNUM, regs + sparc64fbsd_r_tpc_offset);
if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
supply_register (SPARC64_NPC_REGNUM, regs + sparc64fbsd_r_tnpc_offset);
if (regnum == SPARC64_STATE_REGNUM || regnum == -1)
supply_register (SPARC64_STATE_REGNUM, regs + sparc64fbsd_r_tstate_offset);
if (regnum == SPARC64_FPRS_REGNUM || regnum == -1)
supply_register (SPARC64_FPRS_REGNUM, regs + sparc64fbsd_r_fprs_offset);
if (regnum == SPARC64_Y_REGNUM || regnum == -1)
supply_register (SPARC64_Y_REGNUM, regs + sparc64fbsd_r_y_offset);
if ((regnum >= SPARC_G0_REGNUM && regnum <= SPARC_G7_REGNUM) || regnum == -1)
{
if (regnum == SPARC_G0_REGNUM || regnum == -1)
supply_register (SPARC_G0_REGNUM, NULL); /* %g0 is always zero. */
for (i = SPARC_G1_REGNUM; i <= SPARC_G7_REGNUM; i++)
{
if (regnum == i || regnum == -1)
supply_register (i, (regs + sparc64fbsd_r_global_offset
+ ((i - SPARC_G0_REGNUM) * 8)));
}
}
if ((regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
{
for (i = SPARC_O0_REGNUM; i <= SPARC_O7_REGNUM; i++)
{
if (regnum == i || regnum == -1)
supply_register (i, (regs + sparc64fbsd_r_out_offset
+ ((i - SPARC_O0_REGNUM) * 8)));
}
}
/* Inputs and Locals are stored onto the stack by by the kernel. */
if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1)
{
ULONGEST sp;
regcache_cooked_read_unsigned (current_regcache, SPARC_SP_REGNUM, &sp);
sparc_supply_rwindow (sp, regnum);
}
}
void
sparc64fbsd_fill_reg (char *regs, int regnum)
{
char buf[8];
int i;
if (regnum == SPARC64_PC_REGNUM || regnum == -1)
regcache_collect (SPARC64_PC_REGNUM, regs + sparc64fbsd_r_tpc_offset);
if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
regcache_collect (SPARC64_NPC_REGNUM, regs + sparc64fbsd_r_tnpc_offset);
if (regnum == SPARC64_FPRS_REGNUM || regnum == -1)
regcache_collect (SPARC64_FPRS_REGNUM, regs + sparc64fbsd_r_fprs_offset);
if (regnum == SPARC64_Y_REGNUM || regnum == -1)
regcache_collect (SPARC64_Y_REGNUM, regs + sparc64fbsd_r_y_offset);
if ((regnum >= SPARC_G0_REGNUM && regnum <= SPARC_G7_REGNUM) || regnum == -1)
{
/* %g0 is always zero. */
for (i = SPARC_G1_REGNUM; i <= SPARC_G7_REGNUM; i++)
{
if (regnum == i || regnum == -1)
regcache_collect (i, (regs + sparc64fbsd_r_global_offset
+ ((i - SPARC_G0_REGNUM) * 8)));
}
}
if ((regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
{
for (i = SPARC_O0_REGNUM; i <= SPARC_O7_REGNUM; i++)
{
if (regnum == i || regnum == -1)
regcache_collect (i, (regs + sparc64fbsd_r_out_offset
+ ((i - SPARC_O0_REGNUM) * 8)));
}
}
/* Responsibility for the stack regs is pushed off onto the caller. */
}
void
sparc64fbsd_supply_fpreg (const char *fpregs, int regnum)
{
int i;
for (i = 0; i < 32; i++)
{
if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
supply_register (SPARC_F0_REGNUM + i, fpregs + (i * 4));
}
for (i = 0; i < 16; i++)
{
if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
supply_register (SPARC64_F32_REGNUM + i, fpregs + (32 * 4) + (i * 8));
}
if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
supply_register (SPARC64_FSR_REGNUM, fpregs + (32 * 4) + (16 * 8));
}
void
sparc64fbsd_fill_fpreg (char *fpregs, int regnum)
{
int i;
for (i = 0; i < 32; i++)
{
if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
regcache_collect (SPARC_F0_REGNUM + i, fpregs + (i * 4));
}
for (i = 0; i < 16; i++)
{
if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
regcache_collect (SPARC64_F32_REGNUM + i, fpregs + (32 * 4) + (i * 8));
}
if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
regcache_collect (SPARC64_FSR_REGNUM, fpregs + (32 * 4) + (16 * 8));
}
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
CORE_ADDR ignore)
{
switch (which)
{
case 0: /* Integer registers */
if (core_reg_size != sparc64fbsd_sizeof_struct_reg)
warning ("Wrong size register set in core file.");
else
sparc64fbsd_supply_reg (core_reg_sect, -1);
break;
case 2: /* Floating pointer registers */
if (core_reg_size != sparc64fbsd_sizeof_struct_fpreg)
warning ("Wrong size FP register set in core file.");
else
sparc64fbsd_supply_fpreg (core_reg_sect, -1);
break;
default:
/* Don't know what kind of register request this is; just ignore it. */
break;
}
}
static struct core_fns sparc64fbsd_core_fns =
{
bfd_target_elf_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_core_registers, /* core_read_registers */
NULL
};
static void
sparc64fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
/* Nothing yet. */
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_sparc64fbsd_tdep (void);
void
_initialize_sparc64fbsd_tdep (void)
{
gdbarch_register_osabi (bfd_arch_sparc, bfd_mach_sparc_v9,
GDB_OSABI_FREEBSD_ELF, sparc64fbsd_init_abi);
add_core_fns (&sparc64fbsd_core_fns);
}
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