#include "defs.h"
#include "inferior.h"
#include "target.h"
#include "gdbcore.h"
#include "regcache.h"
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <signal.h>
#include <sys/ptrace.h>
#include <sys/wait.h>
#ifdef __linux__
#include <asm/reg.h>
#else
#include <machine/reg.h>
#endif
#include <sys/user.h>
#define INT_REGS 1
#define STACK_REGS 2
#define FP_REGS 4
void
fetch_inferior_registers (int regno)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
int i;
if (deferred_stores)
internal_error (__FILE__, __LINE__, "failed internal consistency check");
DO_DEFERRED_STORES;
if (regno < O7_REGNUM
|| regno >= Y_REGNUM
|| (!register_valid[SP_REGNUM] && regno < I7_REGNUM))
{
if (0 != ptrace (PTRACE_GETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_registers, 0))
perror ("ptrace_getregs");
registers[REGISTER_BYTE (0)] = 0;
memcpy (®isters[REGISTER_BYTE (1)], &inferior_registers.r_g1,
15 * REGISTER_RAW_SIZE (G0_REGNUM));
*(int *) ®isters[REGISTER_BYTE (PS_REGNUM)] = inferior_registers.r_ps;
*(int *) ®isters[REGISTER_BYTE (PC_REGNUM)] = inferior_registers.r_pc;
*(int *) ®isters[REGISTER_BYTE (NPC_REGNUM)] = inferior_registers.r_npc;
*(int *) ®isters[REGISTER_BYTE (Y_REGNUM)] = inferior_registers.r_y;
for (i = G0_REGNUM; i <= O7_REGNUM; i++)
register_valid[i] = 1;
register_valid[Y_REGNUM] = 1;
register_valid[PS_REGNUM] = 1;
register_valid[PC_REGNUM] = 1;
register_valid[NPC_REGNUM] = 1;
register_valid[WIM_REGNUM] = 1;
register_valid[TBR_REGNUM] = 1;
register_valid[CPS_REGNUM] = 1;
}
if (regno == -1 ||
regno == FPS_REGNUM ||
(regno >= FP0_REGNUM && regno <= FP0_REGNUM + 31))
{
if (0 != ptrace (PTRACE_GETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_fp_registers,
0))
perror ("ptrace_getfpregs");
memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], &inferior_fp_registers,
sizeof inferior_fp_registers.fpu_fr);
memcpy (®isters[REGISTER_BYTE (FPS_REGNUM)],
&inferior_fp_registers.Fpu_fsr,
sizeof (FPU_FSR_TYPE));
for (i = FP0_REGNUM; i <= FP0_REGNUM + 31; i++)
register_valid[i] = 1;
register_valid[FPS_REGNUM] = 1;
}
if (regno == -1)
{
CORE_ADDR sp = *(unsigned int *) & registers[REGISTER_BYTE (SP_REGNUM)];
target_read_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)],
16 * REGISTER_RAW_SIZE (L0_REGNUM));
for (i = L0_REGNUM; i <= I7_REGNUM; i++)
register_valid[i] = 1;
}
else if (regno >= L0_REGNUM && regno <= I7_REGNUM)
{
CORE_ADDR sp = *(unsigned int *) & registers[REGISTER_BYTE (SP_REGNUM)];
i = REGISTER_BYTE (regno);
if (register_valid[regno])
printf_unfiltered ("register %d valid and read\n", regno);
target_read_memory (sp + i - REGISTER_BYTE (L0_REGNUM),
®isters[i], REGISTER_RAW_SIZE (regno));
register_valid[regno] = 1;
}
}
void
store_inferior_registers (int regno)
{
struct regs inferior_registers;
struct fp_status inferior_fp_registers;
int wanna_store = INT_REGS + STACK_REGS + FP_REGS;
if (regno >= 0)
{
if (FP0_REGNUM <= regno && regno < FP0_REGNUM + 32)
{
wanna_store = FP_REGS;
}
else
{
if (regno == SP_REGNUM)
wanna_store = INT_REGS + STACK_REGS;
else if (regno < L0_REGNUM || regno > I7_REGNUM)
wanna_store = INT_REGS;
else if (regno == FPS_REGNUM)
wanna_store = FP_REGS;
else
wanna_store = STACK_REGS;
}
}
if (regno == -2)
{
wanna_store = deferred_stores;
deferred_stores = 0;
}
else
{
if (wanna_store == STACK_REGS)
{
}
else
{
deferred_stores |= wanna_store;
return;
}
}
if (wanna_store & STACK_REGS)
{
CORE_ADDR sp = *(unsigned int *) & registers[REGISTER_BYTE (SP_REGNUM)];
if (regno < 0 || regno == SP_REGNUM)
{
if (!register_valid[L0_REGNUM + 5])
internal_error (__FILE__, __LINE__, "failed internal consistency check");
target_write_memory (sp,
®isters[REGISTER_BYTE (L0_REGNUM)],
16 * REGISTER_RAW_SIZE (L0_REGNUM));
}
else
{
if (!register_valid[regno])
internal_error (__FILE__, __LINE__, "failed internal consistency check");
target_write_memory (sp + REGISTER_BYTE (regno) - REGISTER_BYTE (L0_REGNUM),
®isters[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
}
}
if (wanna_store & INT_REGS)
{
if (!register_valid[G1_REGNUM])
internal_error (__FILE__, __LINE__, "failed internal consistency check");
memcpy (&inferior_registers.r_g1, ®isters[REGISTER_BYTE (G1_REGNUM)],
15 * REGISTER_RAW_SIZE (G1_REGNUM));
inferior_registers.r_ps =
*(int *) ®isters[REGISTER_BYTE (PS_REGNUM)];
inferior_registers.r_pc =
*(int *) ®isters[REGISTER_BYTE (PC_REGNUM)];
inferior_registers.r_npc =
*(int *) ®isters[REGISTER_BYTE (NPC_REGNUM)];
inferior_registers.r_y =
*(int *) ®isters[REGISTER_BYTE (Y_REGNUM)];
if (0 != ptrace (PTRACE_SETREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_registers, 0))
perror ("ptrace_setregs");
}
if (wanna_store & FP_REGS)
{
if (!register_valid[FP0_REGNUM + 9])
internal_error (__FILE__, __LINE__, "failed internal consistency check");
memcpy (&inferior_fp_registers, ®isters[REGISTER_BYTE (FP0_REGNUM)],
sizeof inferior_fp_registers.fpu_fr);
memcpy (&inferior_fp_registers.Fpu_fsr,
®isters[REGISTER_BYTE (FPS_REGNUM)], sizeof (FPU_FSR_TYPE));
if (0 !=
ptrace (PTRACE_SETFPREGS, PIDGET (inferior_ptid),
(PTRACE_ARG3_TYPE) & inferior_fp_registers, 0))
perror ("ptrace_setfpregs");
}
}
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR ignore)
{
if (which == 0)
{
#define gregs ((struct regs *)core_reg_sect)
*(int *) ®isters[REGISTER_BYTE (0)] = 0;
memcpy (®isters[REGISTER_BYTE (G1_REGNUM)], &gregs->r_g1,
15 * REGISTER_RAW_SIZE (G1_REGNUM));
*(int *) ®isters[REGISTER_BYTE (PS_REGNUM)] = gregs->r_ps;
*(int *) ®isters[REGISTER_BYTE (PC_REGNUM)] = gregs->r_pc;
*(int *) ®isters[REGISTER_BYTE (NPC_REGNUM)] = gregs->r_npc;
*(int *) ®isters[REGISTER_BYTE (Y_REGNUM)] = gregs->r_y;
{
int sp;
sp = *(int *) ®isters[REGISTER_BYTE (SP_REGNUM)];
if (0 != target_read_memory (sp, ®isters[REGISTER_BYTE (L0_REGNUM)],
16 * REGISTER_RAW_SIZE (L0_REGNUM)))
{
fprintf_unfiltered (gdb_stderr,
"Couldn't read input and local registers from core file\n");
}
}
}
else if (which == 2)
{
#define fpuregs ((struct fpu *) core_reg_sect)
if (core_reg_size >= sizeof (struct fpu))
{
memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], fpuregs->fpu_regs,
sizeof (fpuregs->fpu_regs));
memcpy (®isters[REGISTER_BYTE (FPS_REGNUM)], &fpuregs->fpu_fsr,
sizeof (FPU_FSR_TYPE));
}
else
fprintf_unfiltered (gdb_stderr, "Couldn't read float regs from core file\n");
}
}
int
kernel_u_size (void)
{
return (sizeof (struct user));
}
static struct core_fns sparc_core_fns =
{
bfd_target_unknown_flavour,
default_check_format,
default_core_sniffer,
fetch_core_registers,
NULL
};
void
_initialize_core_sparc (void)
{
add_core_fns (&sparc_core_fns);
}