187 lines
5.7 KiB
C
187 lines
5.7 KiB
C
/* Copyright (C) 2009, 2010 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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "server.h"
|
|
#include "lynx-low.h"
|
|
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <limits.h>
|
|
#include <sys/ptrace.h>
|
|
|
|
/* The following two typedefs are defined in a .h file which is not
|
|
in the standard include path (/sys/include/family/ppc/ucontext.h),
|
|
so we just duplicate them here. */
|
|
|
|
/* General register context */
|
|
typedef struct usr_econtext_s
|
|
{
|
|
uint32_t uec_iregs[32];
|
|
uint32_t uec_inum;
|
|
uint32_t uec_srr0;
|
|
uint32_t uec_srr1;
|
|
uint32_t uec_lr;
|
|
uint32_t uec_ctr;
|
|
uint32_t uec_cr;
|
|
uint32_t uec_xer;
|
|
uint32_t uec_dar;
|
|
uint32_t uec_mq;
|
|
uint32_t uec_msr;
|
|
uint32_t uec_sregs[16];
|
|
uint32_t uec_ss_count;
|
|
uint32_t uec_ss_addr1;
|
|
uint32_t uec_ss_addr2;
|
|
uint32_t uec_ss_code1;
|
|
uint32_t uec_ss_code2;
|
|
} usr_econtext_t;
|
|
|
|
/* Floating point register context */
|
|
typedef struct usr_fcontext_s
|
|
{
|
|
uint64_t ufc_freg[32];
|
|
uint32_t ufc_fpscr[2];
|
|
} usr_fcontext_t;
|
|
|
|
/* Index of for various registers inside the regcache. */
|
|
#define R0_REGNUM 0
|
|
#define F0_REGNUM 32
|
|
#define PC_REGNUM 64
|
|
#define MSR_REGNUM 65
|
|
#define CR_REGNUM 66
|
|
#define LR_REGNUM 67
|
|
#define CTR_REGNUM 68
|
|
#define XER_REGNUM 69
|
|
#define FPSCR_REGNUM 70
|
|
|
|
/* Defined in auto-generated file powerpc-32.c. */
|
|
extern void init_registers_powerpc_32 (void);
|
|
|
|
/* The fill_function for the general-purpose register set. */
|
|
|
|
static void
|
|
lynx_ppc_fill_gregset (struct regcache *regcache, char *buf)
|
|
{
|
|
int i;
|
|
|
|
/* r0 - r31 */
|
|
for (i = 0; i < 32; i++)
|
|
collect_register (regcache, R0_REGNUM + i,
|
|
buf + offsetof (usr_econtext_t, uec_iregs[i]));
|
|
|
|
/* The other registers provided in the GP register context. */
|
|
collect_register (regcache, PC_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_srr0));
|
|
collect_register (regcache, MSR_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_srr1));
|
|
collect_register (regcache, CR_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_cr));
|
|
collect_register (regcache, LR_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_lr));
|
|
collect_register (regcache, CTR_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_ctr));
|
|
collect_register (regcache, XER_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_xer));
|
|
}
|
|
|
|
/* The store_function for the general-purpose register set. */
|
|
|
|
static void
|
|
lynx_ppc_store_gregset (struct regcache *regcache, const char *buf)
|
|
{
|
|
int i;
|
|
|
|
/* r0 - r31 */
|
|
for (i = 0; i < 32; i++)
|
|
supply_register (regcache, R0_REGNUM + i,
|
|
buf + offsetof (usr_econtext_t, uec_iregs[i]));
|
|
|
|
/* The other registers provided in the GP register context. */
|
|
supply_register (regcache, PC_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_srr0));
|
|
supply_register (regcache, MSR_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_srr1));
|
|
supply_register (regcache, CR_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_cr));
|
|
supply_register (regcache, LR_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_lr));
|
|
supply_register (regcache, CTR_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_ctr));
|
|
supply_register (regcache, XER_REGNUM,
|
|
buf + offsetof (usr_econtext_t, uec_xer));
|
|
}
|
|
|
|
/* The fill_function for the floating-point register set. */
|
|
|
|
static void
|
|
lynx_ppc_fill_fpregset (struct regcache *regcache, char *buf)
|
|
{
|
|
int i;
|
|
|
|
/* f0 - f31 */
|
|
for (i = 0; i < 32; i++)
|
|
collect_register (regcache, F0_REGNUM + i,
|
|
buf + offsetof (usr_fcontext_t, ufc_freg[i]));
|
|
|
|
/* fpscr */
|
|
collect_register (regcache, FPSCR_REGNUM,
|
|
buf + offsetof (usr_fcontext_t, ufc_fpscr));
|
|
}
|
|
|
|
/* The store_function for the floating-point register set. */
|
|
|
|
static void
|
|
lynx_ppc_store_fpregset (struct regcache *regcache, const char *buf)
|
|
{
|
|
int i;
|
|
|
|
/* f0 - f31 */
|
|
for (i = 0; i < 32; i++)
|
|
supply_register (regcache, F0_REGNUM + i,
|
|
buf + offsetof (usr_fcontext_t, ufc_freg[i]));
|
|
|
|
/* fpscr */
|
|
supply_register (regcache, FPSCR_REGNUM,
|
|
buf + offsetof (usr_fcontext_t, ufc_fpscr));
|
|
}
|
|
|
|
/* Implements the lynx_target_ops.arch_setup routine. */
|
|
|
|
static void
|
|
lynx_ppc_arch_setup (void)
|
|
{
|
|
init_registers_powerpc_32 ();
|
|
}
|
|
|
|
/* Description of all the powerpc-lynx register sets. */
|
|
|
|
struct lynx_regset_info lynx_target_regsets[] = {
|
|
/* General Purpose Registers. */
|
|
{PTRACE_GETREGS, PTRACE_SETREGS, sizeof(usr_econtext_t),
|
|
lynx_ppc_fill_gregset, lynx_ppc_store_gregset},
|
|
/* Floating Point Registers. */
|
|
{ PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof(usr_fcontext_t),
|
|
lynx_ppc_fill_fpregset, lynx_ppc_store_fpregset },
|
|
/* End of list marker. */
|
|
{0, 0, -1, NULL, NULL }
|
|
};
|
|
|
|
/* The lynx_target_ops vector for powerpc-lynxos. */
|
|
|
|
struct lynx_target_ops the_low_target = {
|
|
lynx_ppc_arch_setup,
|
|
};
|