old-cross-binutils/gdb/m32r-linux-nat.c
Ulrich Weigand 56be38147c * target.h (struct regcache): Add forward declaration.
(struct target_ops): Add REGCACHE parameter to to_fetch_registers
	and to_store_registers target operations.
	(target_fetch_registers, target_store_registers): Update.

	* regcache.c (regcache_raw_read): Replace register_cached by
	regcache_valid_p.  Pass regcache to target_fetch_registers.
	(regcache_raw_write): Pass regcache to target_store_registers.

	* arm-linux-nat.c (store_fpregister, store_fpregs, store_register,
	store_regs, store_wmmx_regs): Replace register_cached by
	regcache_valid_p.

	* bsd-kvm.c (bsd_kvm_open, bsd_kvm_proc_cmd): Pass current_regcache
	to target_fetch_registers calls.
	* corelow.c (core_open): Likewise.
	* linux-nat.c (linux_nat_corefile_thread_callback): Likewise.
	* proc-service.c (ps_lgetregs, ps_lsetregs, ps_lgetfpregs,
	ps_lsetfpregs): Likewise.
	* sol-thread.c (ps_lgetregs, ps_lsetregs, ps_lgetfpregs,
	ps_lsetfpregs): Likewise.
	* win32-nat.c (win32_resume): Likewise.
	* ia64-tdep.c (ia64_store_return_value): Pass current_regcache
	to target_store_registers call.
	* rs6000-tdep.c (rs6000_push_dummy_call): Likewise.

	* inferior.h (store_inferior_registers): Update prototype.
	(fetch_inferior_registers): Likewise.
	* gnu-nat.c (gnu_store_registers, gnu_fetch_registers): Likewise.
	* mips-linux-nat.c (super_fetch_registers, super_store_registers):
	Update function pointer signatures.

	* aix-thread.c (aix_thread_fetch_registers): Add REGCACHE parameter,
	use it instead of current_regcache, update calls.
	(aix_thread_store_registers): Likewise.
	* alphabsd-nat.c (alphabsd_fetch_inferior_registers): Likewise.
	(alphabsd_store_inferior_registers): Likewise.
	* amd64bsd-nat.c (amd64bsd_fetch_inferior_registers): Likewise.
	(amd64bsd_store_inferior_registers): Likewise.
	* amd64-linux-nat.c (amd64_linux_fetch_inferior_registers): Likewise.
	(amd64_linux_store_inferior_registers): Likewise.
	* arm-linux-nat.c (fetch_fpregister, fetch_fpregs, store_fpregister,
	store_fpregs, fetch_register, fetch_regs, store_register, store_regs,
	fetch_wmmx_regs, store_wmmx_regs): Likewise.
	(arm_linux_fetch_inferior_registers): Likewise.
	(arm_linux_store_inferior_registers): Likewise.
	* armnbsd-nat.c (fetch_register, fetch_regs, fetch_fp_register,
	fetch_fp_regs, armnbsd_fetch_registers): Likewise.
	(store_register, store_regs, store_fp_register, store_fp_regs,
	armnbsd_store_registers): Likewise.
	* bsd-kvm.c (bsd_kvm_fetch_pcb, bsd_kvm_fetch_registers): Likewise.
	* bsd-uthread.c (bsd_uthread_fetch_registers): Likewise.
	(bsd_uthread_store_registers): Likewise.
	* corelow.c (get_core_registers): Likewise.
	* go32-nat.c (fetch_register, go32_fetch_registers, store_register,
	go32_store_registers): Likewise.
	* hppabsd-nat.c (hppabsd_fetch_registers): Likewise.
	(hppabsd_store_registers): Likewise.
	* hppa-hpux-nat.c (hppa_hpux_fetch_register): Likewise.
	(hppa_hpux_fetch_inferior_registers): Likewise.
	(hppa_hpux_store_register): Likewise.
	(hppa_hpux_store_inferior_registers): Likewise.
	* hppa-linux-nat.c (fetch_register, store_register): Likewise.
	(hppa_linux_fetch_inferior_registers): Likewise.
	(hppa_linux_store_inferior_registers): Likewise.
	* hpux-thread.c (hpux_thread_fetch_registers): Likewise.
	(hpux_thread_store_registers): Likewise.
	* i386bsd-nat.c (i386bsd_fetch_inferior_registers): Likewise.
	(i386bsd_store_inferior_registers): Likewise.
	* i386gnu-nat.c (fetch_fpregs, gnu_fetch_registers, store_fpregs,
	gnu_store_registers): Likewise.
	* i386-linux-nat.c (fetch_register, store_register, fetch_regs,
	store_regs, fetch_fpregs, store_fpregs, fetch_fpxregs, store_fpxregs):
	Likewise.
	(i386_linux_fetch_inferior_registers): Likewise.
	(i386_linux_store_inferior_registers): Likewise.
	* ia64-linux-nat.c (ia64_linux_fetch_register): Likewise.
	(ia64_linux_fetch_registers): Likewise.
	(ia64_linux_store_register): Likewise.
	(ia64_linux_store_registers): Likewise.
	* inf-child.c (inf_child_fetch_inferior_registers): Likewise.
	(inf_child_store_inferior_registers): Likewise.
	* inf-ptrace.c (inf_ptrace_fetch_register): Likewise.
	(inf_ptrace_fetch_registers): Likewise.
	(inf_ptrace_store_register): Likewise.
	(inf_ptrace_store_registers): Likewise.
	* infptrace.c (fetch_register, store_register): Likewise.
	(fetch_inferior_registers, store_inferior_registers): Likewise.
	* m32r-linux-nat.c (fetch_regs, store_regs): Likewise.
	(m32r_linux_fetch_inferior_registers): Likewise.
	(m32r_linux_store_inferior_registers): Likewise.
	* m68kbsd-nat.c (m68kbsd_fetch_inferior_registers): Likewise.
	(m68kbsd_store_inferior_registers): Likewise.
	* m68klinux-nat.c (fetch_register, old_fetch_inferior_registers,
	store_register, old_store_inferior_registers, fetch_regs, store_regs,
	fetch_fpregs, store_fpregs): Likewise.
	(m68k_linux_fetch_inferior_registers): Likewise.
	(m68k_linux_store_inferior_registers): Likewise.
	* m88kbsd-nat.c (m88kbsd_fetch_inferior_registers): Likewise.
	(m88kbsd_store_inferior_registers): Likewise.
	* mips64obsd-nat.c (mips64obsd_fetch_inferior_registers): Likewise.
	(mips64obsd_store_inferior_registers): Likewise.
	* mips-linux-nat.c (mips64_linux_regsets_fetch_registers): Likewise.
	(mips64_linux_regsets_store_registers): Likewise.
	(mips64_linux_fetch_registers): Likewise.
	(mips64_linux_store_registers): Likewise.
	* mipsnbsd-nat.c (mipsnbsd_fetch_inferior_registers): Likewise.
	(mipsnbsd_store_inferior_registers): Likewise.
	* monitor.c (monitor_fetch_register, monitor_store_register): Likewise.
	(monitor_fetch_registers, monitor_store_registers): Likewise.
	* nto-procfs.c (procfs_fetch_registers): Likewise.
	(procfs_store_registers): Likewise.
	* ppc-linux-nat.c (fetch_altivec_register, fetch_spe_register,
	fetch_register, supply_vrregset, fetch_altivec_registers,
	fetch_ppc_registers, ppc_linux_fetch_inferior_registers): Likewise.
	(store_altivec_register, store_spe_register, store_register,
	fill_vrregset, store_altivec_registers, store_ppc_registers,
	ppc_linux_store_inferior_registers): Likewise.
	* ppcnbsd-nat.c (ppcnbsd_fetch_inferior_registers): Likewise.
	(ppcnbsd_store_inferior_registers): Likewise.
	* ppcobsd-nat.c (ppcobsd_fetch_registers): Likewise.
	(ppcobsd_store_registers): Likewise.
	* procfs.c (procfs_fetch_registers, procfs_store_registers): Likewise.
	* remote.c (fetch_register_using_p, process_g_packet,
	fetch_registers_using_g, remote_fetch_registers): Likewise.
	(store_register_using_P, store_registers_using_G,
	remote_store_registers): Likewise.
	* remote-m32r-sdi.c (m32r_fetch_registers, m32r_fetch_register,
	m32r_store_register, m32r_store_register): Likewise.
	* remote-mips.c (mips_fetch_registers, mips_store_registers): Likewise.
	* remote-sim.c (gdbsim_fetch_register): Likewise.
	(gdbsim_store_register): Likewise.
	* rs6000-nat.c (fetch_register, store_register): Likewise.
	(rs6000_fetch_inferior_registers): Likewise.
	(rs6000_store_inferior_registers): Likewise.
	* s390-nat.c (fetch_regs, store_regs): Likewise.
	(fetch_fpregs, store_fpregs): Likewise.
	(s390_linux_fetch_inferior_registers): Likewise.
	(s390_linux_store_inferior_registers): Likewise.
	* shnbsd-nat.c (shnbsd_fetch_inferior_registers): Likewise.
	(shnbsd_store_inferior_registers): Likewise.
	* sol-thread.c (sol_thread_fetch_registers): Likewise.
	(sol_thread_store_registers): Likewise.
	* sparc-nat.c (fetch_inferior_registers): Likewise.
	(store_inferior_registers): Likewise.
	* spu-linux-nat.c (spu_fetch_inferior_registers): Likewise.
	(spu_store_inferior_registers): Likewise.
	* target.c (debug_print_register): Likewise.
	(debug_to_fetch_registers, debug_to_store_registers): Likewise.
	* vaxbsd-nat.c (vaxbsd_fetch_inferior_registers): Likewise.
	(vaxbsd_store_inferior_registers): Likewise.
	* win32-nat.c (do_win32_fetch_inferior_registers): Likewise.
	(win32_fetch_inferior_registers): Likewise.
	(win32_store_inferior_registers): Likewise.
2007-05-06 14:34:38 +00:00

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/* Native-dependent code for GNU/Linux m32r.
Copyright (C) 2004, 2005, 2006, 2007 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 "inferior.h"
#include "gdbcore.h"
#include "regcache.h"
#include "linux-nat.h"
#include "target.h"
#include "gdb_assert.h"
#include "gdb_string.h"
#include <sys/ptrace.h>
#include <sys/user.h>
#include <sys/procfs.h>
/* Prototypes for supply_gregset etc. */
#include "gregset.h"
#include "m32r-tdep.h"
/* Since EVB register is not available for native debug, we reduce
the number of registers. */
#define M32R_LINUX_NUM_REGS (M32R_NUM_REGS - 1)
/* Mapping between the general-purpose registers in `struct user'
format and GDB's register array layout. */
static int regmap[] = {
4, 5, 6, 7, 0, 1, 2, 8,
9, 10, 11, 12, 13, 24, 25, 23,
19, 19, 26, 23, 22, 20, 16, 15
};
#define PSW_REGMAP 19
#define BBPSW_REGMAP 21
#define SPU_REGMAP 23
#define SPI_REGMAP 26
/* Doee apply to the corresponding SET requests as well. */
#define GETREGS_SUPPLIES(regno) (0 <= (regno) && (regno) <= M32R_LINUX_NUM_REGS)
/* Transfering the general-purpose registers between GDB, inferiors
and core files. */
/* Fill GDB's register array with the general-purpose register values
in *GREGSETP. */
void
supply_gregset (struct regcache *regcache, const elf_gregset_t * gregsetp)
{
const elf_greg_t *regp = (const elf_greg_t *) gregsetp;
int i;
unsigned long psw, bbpsw;
psw = *(regp + PSW_REGMAP);
bbpsw = *(regp + BBPSW_REGMAP);
for (i = 0; i < M32R_LINUX_NUM_REGS; i++)
{
elf_greg_t regval;
switch (i)
{
case PSW_REGNUM:
regval = ((0x00c1 & bbpsw) << 8) | ((0xc100 & psw) >> 8);
break;
case CBR_REGNUM:
regval = ((psw >> 8) & 1);
break;
default:
regval = *(regp + regmap[i]);
break;
}
if (i != M32R_SP_REGNUM)
regcache_raw_supply (regcache, i, &regval);
else if (psw & 0x8000)
regcache_raw_supply (regcache, i, regp + SPU_REGMAP);
else
regcache_raw_supply (regcache, i, regp + SPI_REGMAP);
}
}
/* Fetch all general-purpose registers from process/thread TID and
store their values in GDB's register array. */
static void
fetch_regs (struct regcache *regcache, int tid)
{
elf_gregset_t regs;
if (ptrace (PTRACE_GETREGS, tid, 0, (int) &regs) < 0)
perror_with_name (_("Couldn't get registers"));
supply_gregset (regcache, (const elf_gregset_t *) &regs);
}
/* Fill register REGNO (if it is a general-purpose register) in
*GREGSETPS with the value in GDB's register array. If REGNO is -1,
do this for all registers. */
void
fill_gregset (const struct regcache *regcache,
elf_gregset_t * gregsetp, int regno)
{
elf_greg_t *regp = (elf_greg_t *) gregsetp;
int i;
unsigned long psw, bbpsw, tmp;
psw = *(regp + PSW_REGMAP);
bbpsw = *(regp + BBPSW_REGMAP);
for (i = 0; i < M32R_LINUX_NUM_REGS; i++)
{
if (regno != -1 && regno != i)
continue;
if (i == CBR_REGNUM || i == PSW_REGNUM)
continue;
if (i == SPU_REGNUM || i == SPI_REGNUM)
continue;
if (i != M32R_SP_REGNUM)
regcache_raw_collect (regcache, i, regp + regmap[i]);
else if (psw & 0x8000)
regcache_raw_collect (regcache, i, regp + SPU_REGMAP);
else
regcache_raw_collect (regcache, i, regp + SPI_REGMAP);
}
}
/* Store all valid general-purpose registers in GDB's register array
into the process/thread specified by TID. */
static void
store_regs (const struct regcache *regcache, int tid, int regno)
{
elf_gregset_t regs;
if (ptrace (PTRACE_GETREGS, tid, 0, (int) &regs) < 0)
perror_with_name (_("Couldn't get registers"));
fill_gregset (regcache, &regs, regno);
if (ptrace (PTRACE_SETREGS, tid, 0, (int) &regs) < 0)
perror_with_name (_("Couldn't write registers"));
}
/* Transfering floating-point registers between GDB, inferiors and cores.
Since M32R has no floating-point registers, these functions do nothing. */
void
supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregs)
{
}
void
fill_fpregset (const struct regcache *regcache,
gdb_fpregset_t *fpregs, int regno)
{
}
/* Transferring arbitrary registers between GDB and inferior. */
/* Fetch register REGNO from the child process. If REGNO is -1, do
this for all registers (including the floating point and SSE
registers). */
static void
m32r_linux_fetch_inferior_registers (struct regcache *regcache, int regno)
{
int tid;
/* GNU/Linux LWP ID's are process ID's. */
tid = TIDGET (inferior_ptid);
if (tid == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
/* Use the PTRACE_GETREGS request whenever possible, since it
transfers more registers in one system call, and we'll cache the
results. */
if (regno == -1 || GETREGS_SUPPLIES (regno))
{
fetch_regs (regcache, tid);
return;
}
internal_error (__FILE__, __LINE__,
_("Got request for bad register number %d."), regno);
}
/* Store register REGNO back into the child process. If REGNO is -1,
do this for all registers (including the floating point and SSE
registers). */
static void
m32r_linux_store_inferior_registers (struct regcache *regcache, int regno)
{
int tid;
/* GNU/Linux LWP ID's are process ID's. */
if ((tid = TIDGET (inferior_ptid)) == 0)
tid = PIDGET (inferior_ptid); /* Not a threaded program. */
/* Use the PTRACE_SETREGS request whenever possible, since it
transfers more registers in one system call. */
if (regno == -1 || GETREGS_SUPPLIES (regno))
{
store_regs (regcache, tid, regno);
return;
}
internal_error (__FILE__, __LINE__,
_("Got request to store bad register number %d."), regno);
}
void _initialize_m32r_linux_nat (void);
void
_initialize_m32r_linux_nat (void)
{
struct target_ops *t;
/* Fill in the generic GNU/Linux methods. */
t = linux_target ();
/* Add our register access methods. */
t->to_fetch_registers = m32r_linux_fetch_inferior_registers;
t->to_store_registers = m32r_linux_store_inferior_registers;
/* Register the target. */
linux_nat_add_target (t);
}