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/* PPC linux native support.
Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001
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 "frame.h"
#include "inferior.h"
#include "gdbcore.h"
#include "regcache.h"
#include <sys/types.h>
#include <sys/param.h>
#include <signal.h>
#include <sys/user.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <sys/procfs.h>
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
#include "ppc-tdep.h"
int
kernel_u_size (void)
{
return (sizeof (struct user));
}
/* *INDENT-OFF* */
/* registers layout, as presented by the ptrace interface:
PT_R0, PT_R1, PT_R2, PT_R3, PT_R4, PT_R5, PT_R6, PT_R7,
PT_R8, PT_R9, PT_R10, PT_R11, PT_R12, PT_R13, PT_R14, PT_R15,
PT_R16, PT_R17, PT_R18, PT_R19, PT_R20, PT_R21, PT_R22, PT_R23,
PT_R24, PT_R25, PT_R26, PT_R27, PT_R28, PT_R29, PT_R30, PT_R31,
PT_FPR0, PT_FPR0 + 2, PT_FPR0 + 4, PT_FPR0 + 6, PT_FPR0 + 8, PT_FPR0 + 10, PT_FPR0 + 12, PT_FPR0 + 14,
PT_FPR0 + 16, PT_FPR0 + 18, PT_FPR0 + 20, PT_FPR0 + 22, PT_FPR0 + 24, PT_FPR0 + 26, PT_FPR0 + 28, PT_FPR0 + 30,
PT_FPR0 + 32, PT_FPR0 + 34, PT_FPR0 + 36, PT_FPR0 + 38, PT_FPR0 + 40, PT_FPR0 + 42, PT_FPR0 + 44, PT_FPR0 + 46,
PT_FPR0 + 48, PT_FPR0 + 50, PT_FPR0 + 52, PT_FPR0 + 54, PT_FPR0 + 56, PT_FPR0 + 58, PT_FPR0 + 60, PT_FPR0 + 62,
PT_NIP, PT_MSR, PT_CCR, PT_LNK, PT_CTR, PT_XER, PT_MQ */
/* *INDENT_ON * */
int
ppc_register_u_addr (int ustart, int regno)
{
int u_addr = -1;
/* General purpose registers occupy 1 slot each in the buffer */
if (regno >= PPC_GP0_REGNUM && regno <= PPC_GPLAST_REGNUM )
u_addr = (ustart + (PT_R0 + regno) * 4);
/* Floating point regs: 2 slots each */
if (regno >= FP0_REGNUM && regno <= FPLAST_REGNUM)
u_addr = (ustart + (PT_FPR0 + (regno - FP0_REGNUM) * 2) * 4);
/* UISA special purpose registers: 1 slot each */
if (regno == PC_REGNUM)
u_addr = ustart + PT_NIP * 4;
if (regno == PPC_LR_REGNUM)
u_addr = ustart + PT_LNK * 4;
if (regno == PPC_CR_REGNUM)
u_addr = ustart + PT_CCR * 4;
if (regno == PPC_XER_REGNUM)
u_addr = ustart + PT_XER * 4;
if (regno == PPC_CTR_REGNUM)
u_addr = ustart + PT_CTR * 4;
if (regno == PPC_MQ_REGNUM)
u_addr = ustart + PT_MQ * 4;
if (regno == PPC_PS_REGNUM)
u_addr = ustart + PT_MSR * 4;
return u_addr;
}
void
supply_gregset (gdb_gregset_t *gregsetp)
{
int regi;
register elf_greg_t *regp = (elf_greg_t *) gregsetp;
for (regi = 0; regi < 32; regi++)
supply_register (regi, (char *) (regp + regi));
supply_register (PC_REGNUM, (char *) (regp + PT_NIP));
supply_register (PPC_LR_REGNUM, (char *) (regp + PT_LNK));
supply_register (PPC_CR_REGNUM, (char *) (regp + PT_CCR));
supply_register (PPC_XER_REGNUM, (char *) (regp + PT_XER));
supply_register (PPC_CTR_REGNUM, (char *) (regp + PT_CTR));
supply_register (PPC_MQ_REGNUM, (char *) (regp + PT_MQ));
supply_register (PPC_PS_REGNUM, (char *) (regp + PT_MSR));
}
void
fill_gregset (gdb_gregset_t *gregsetp, int regno)
{
int regi;
elf_greg_t *regp = (elf_greg_t *) gregsetp;
for (regi = 0; regi < 32; regi++)
{
if ((regno == -1) || regno == regi)
regcache_collect (regi, regp + PT_R0 + regi);
}
if ((regno == -1) || regno == PC_REGNUM)
regcache_collect (PC_REGNUM, regp + PT_NIP);
if ((regno == -1) || regno == PPC_LR_REGNUM)
regcache_collect (PPC_LR_REGNUM, regp + PT_LNK);
if ((regno == -1) || regno == PPC_CR_REGNUM)
regcache_collect (PPC_CR_REGNUM, regp + PT_CCR);
if ((regno == -1) || regno == PPC_XER_REGNUM)
regcache_collect (PPC_XER_REGNUM, regp + PT_XER);
if ((regno == -1) || regno == PPC_CTR_REGNUM)
regcache_collect (PPC_CTR_REGNUM, regp + PT_CTR);
if ((regno == -1) || regno == PPC_MQ_REGNUM)
regcache_collect (PPC_MQ_REGNUM, regp + PT_MQ);
if ((regno == -1) || regno == PPC_PS_REGNUM)
regcache_collect (PPC_PS_REGNUM, regp + PT_MSR);
}
void
supply_fpregset (gdb_fpregset_t * fpregsetp)
{
int regi;
for (regi = 0; regi < 32; regi++)
{
supply_register (FP0_REGNUM + regi, (char *) (*fpregsetp + regi));
}
}
/* Given a pointer to a floating point register set in /proc format
(fpregset_t *), update the register specified by REGNO from gdb's idea
of the current floating point register set. If REGNO is -1, update
them all. */
void
fill_fpregset (gdb_fpregset_t *fpregsetp, int regno)
{
int regi;
for (regi = 0; regi < 32; regi++)
{
if ((regno == -1) || (regno == FP0_REGNUM + regi))
regcache_collect (FP0_REGNUM + regi, (char *) (*fpregsetp + regi));
}
}
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