/* Native-dependent code for PowerPC's running NetBSD, for GDB.
- Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001
- Free Software Foundation, Inc.
+ Copyright 2002 Free Software Foundation, Inc.
+ Contributed by Wasabi Systems, Inc.
This file is part of GDB.
#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
-#include <machine/frame.h>
#include "defs.h"
#include "inferior.h"
-#include "gdbcore.h"
-#include "ppc-tdep.h"
-#include "regcache.h"
-#define RF(dst, src) \
- memcpy(®isters[REGISTER_BYTE(dst)], &src, sizeof(src))
-
-#define RS(src, dst) \
- memcpy(&dst, ®isters[REGISTER_BYTE(src)], sizeof(dst))
+#include "ppc-tdep.h"
+#include "ppcnbsd-tdep.h"
-void
-fetch_inferior_registers (int regno)
+/* Returns true if PT_GETREGS fetches this register. */
+static int
+getregs_supplies (int regno)
{
- struct reg inferior_registers;
-#ifdef PT_GETFPREGS
- struct fpreg inferior_fp_registers;
-#endif
- int i;
-
- ptrace (PT_GETREGS, inferior_pid,
- (PTRACE_ARG3_TYPE) & inferior_registers, 0);
- for (i = 0; i < 32; i++)
- RF (i, inferior_registers.fixreg[i]);
- RF (PPC_LR_REGNUM, inferior_registers.lr);
- RF (PPC_CR_REGNUM, inferior_registers.cr);
- RF (PPC_XER_REGNUM, inferior_registers.xer);
- RF (PPC_CTR_REGNUM, inferior_registers.ctr);
- RF (PC_REGNUM, inferior_registers.pc);
-
-#ifdef PT_GETFPREGS
- ptrace (PT_GETFPREGS, inferior_pid,
- (PTRACE_ARG3_TYPE) &inferior_fp_registers, 0);
- for (i = 0; i < 32; i++)
- RF (FP0_REGNUM + i, inferior_fp_registers.fpreg[i]);
-#endif
-
- registers_fetched ();
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+
+ return ((regno >= 0 && regno <= 31)
+ || regno == tdep->ppc_lr_regnum
+ || regno == tdep->ppc_cr_regnum
+ || regno == tdep->ppc_xer_regnum
+ || regno == tdep->ppc_ctr_regnum
+ || regno == PC_REGNUM);
}
-void
-store_inferior_registers (int regno)
+/* Like above, but for PT_GETFPREGS. */
+static int
+getfpregs_supplies (int regno)
{
- struct reg inferior_registers;
-#ifdef PT_SETFPREGS
- struct fpreg inferior_fp_registers;
-#endif
- int i;
-
- for (i = 0; i < 32; i++)
- RS (i, inferior_registers.fixreg[i]);
- RS (PPC_LR_REGNUM, inferior_registers.lr);
- RS (PPC_CR_REGNUM, inferior_registers.cr);
- RS (PPC_XER_REGNUM, inferior_registers.xer);
- RS (PPC_CTR_REGNUM, inferior_registers.ctr);
- RS (PC_REGNUM, inferior_registers.pc);
-
- ptrace (PT_SETREGS, inferior_pid,
- (PTRACE_ARG3_TYPE) & inferior_registers, 0);
-
-#ifdef PT_SETFPREGS
- for (i = 0; i < 32; i++)
- RS (FP0_REGNUM + i, inferior_fp_registers.fpreg[i]);
- ptrace (PT_SETFPREGS, inferior_pid,
- (PTRACE_ARG3_TYPE) & inferior_fp_registers, 0);
-#endif
-}
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
-struct md_core
-{
- struct reg intreg;
-#ifdef PT_GETFPREGS
- struct fpreg freg;
-#endif
-};
+ return ((regno >= FP0_REGNUM && regno <= FP0_REGNUM + 31)
+ || regno == tdep->ppc_fpscr_regnum);
+}
void
-fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
- CORE_ADDR ignore)
+fetch_inferior_registers (int regno)
{
- struct md_core *core_reg = (struct md_core *) core_reg_sect;
- int i;
-
- /* Integer registers */
- for (i = 0; i < 32; i++)
- RF (i, core_reg->intreg.fixreg[i]);
- RF (PPC_LR_REGNUM, core_reg->intreg.lr);
- RF (PPC_CR_REGNUM, core_reg->intreg.cr);
- RF (PPC_XER_REGNUM, core_reg->intreg.xer);
- RF (PPC_CTR_REGNUM, core_reg->intreg.ctr);
- RF (PC_REGNUM, core_reg->intreg.pc);
-
-#ifdef PT_FPGETREGS
- /* Floating point registers */
- for (i = 0; i < 32; i++)
- RF (FP0_REGNUM + i, core_reg->freg.fpreg[i]);
-#endif
-
- registers_fetched ();
+ if (regno == -1 || getregs_supplies (regno))
+ {
+ struct reg regs;
+
+ if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) ®s, 0) == -1)
+ perror_with_name ("Couldn't get registers");
+
+ ppcnbsd_supply_reg ((char *) ®s, regno);
+ if (regno != -1)
+ return;
+ }
+
+ if (regno == -1 || getfpregs_supplies (regno))
+ {
+ struct fpreg fpregs;
+
+ if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
+ perror_with_name ("Couldn't get FP registers");
+
+ ppcnbsd_supply_fpreg ((char *) &fpregs, regno);
+ if (regno != -1)
+ return;
+ }
}
-/* Register that we are able to handle ppcnbsd core file formats.
- FIXME: is this really bfd_target_unknown_flavour? */
-
-static struct core_fns ppcnbsd_core_fns =
-{
- bfd_target_unknown_flavour, /* core_flavour */
- default_check_format, /* check_format */
- default_core_sniffer, /* core_sniffer */
- fetch_core_registers, /* core_read_registers */
- NULL /* next */
-};
-
void
-_initialize_ppcnbsd_nat (void)
+store_inferior_registers (int regno)
{
- add_core_fns (&ppcnbsd_core_fns);
+ if (regno == -1 || getregs_supplies (regno))
+ {
+ struct reg regs;
+
+ if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) ®s, 0) == -1)
+ perror_with_name ("Couldn't get registers");
+
+ ppcnbsd_fill_reg ((char *) ®s, regno);
+
+ if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) ®s, 0) == -1)
+ perror_with_name ("Couldn't write registers");
+
+ if (regno != -1)
+ return;
+ }
+
+ if (regno == -1 || getfpregs_supplies (regno))
+ {
+ struct fpreg fpregs;
+
+ if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
+ perror_with_name ("Couldn't get FP registers");
+
+ ppcnbsd_fill_fpreg ((char *) &fpregs, regno);
+
+ if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
+ (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
+ perror_with_name ("Couldn't set FP registers");
+ }
}
projects / deliverable / binutils-gdb.git / blobdiff