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2002-04-11 Daniel Jacobowitz <drow@mvista.com>

Browse source 
* gdbserver/linux-low.c (usr_store_inferior_registers): Support
        registers which are allowed to fail to store.
        * gdbserver/linux-low.h (linux_target_ops): Likewise.
        * gdbserver/linux-ppc-low.c (ppc_regmap): Support FPSCR.
        (ppc_cannot_store_register): FPSCR may not be storable.
        * regformats/reg-ppc.dat: Support FPSCR.
This commit is contained in:
Daniel Jacobowitz 2002-04-11 20:30:08 +00:00
parent e3f36dbd47
commit bc1e36cac4
5 changed files with 29 additions and 11 deletions
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9
gdb/ChangeLog
View file

@ -1,3 +1,12 @@
2002-04-11 Daniel Jacobowitz <drow@mvista.com>
* gdbserver/linux-low.c (usr_store_inferior_registers): Support
registers which are allowed to fail to store.
* gdbserver/linux-low.h (linux_target_ops): Likewise.
* gdbserver/linux-ppc-low.c (ppc_regmap): Support FPSCR.
(ppc_cannot_store_register): FPSCR may not be storable.
* regformats/reg-ppc.dat: Support FPSCR.
2002-04-11 Kevin Buettner <kevinb@redhat.com>
* ppc-tdep.h (struct gdbarch_tdep): Add new field ``ppc_fpscr_regnum''.

19
gdb/gdbserver/linux-low.c
View file

@ -240,7 +240,7 @@ usr_store_inferior_registers (int regno)
if (regno >= the_low_target.num_regs)
return;
if ((*the_low_target.cannot_store_register) (regno))
if ((*the_low_target.cannot_store_register) (regno) == 1)
return;
regaddr = register_addr (regno);
@ -254,14 +254,15 @@ usr_store_inferior_registers (int regno)
*(int *) (register_data (regno) + i));
if (errno != 0)
{
/* Warning, not error, in case we are attached; sometimes the
kernel doesn't let us at the registers. */
char *err = strerror (errno);
char *msg = alloca (strlen (err) + 128);
sprintf (msg, "writing register %d: %s",
regno, err);
error (msg);
return;
if ((*the_low_target.cannot_store_register) (regno) == 0)
{
char *err = strerror (errno);
char *msg = alloca (strlen (err) + 128);
sprintf (msg, "writing register %d: %s",
regno, err);
error (msg);
return;
}
}
regaddr += sizeof (int);
}

4
gdb/gdbserver/linux-low.h
View file

@ -34,6 +34,10 @@ struct linux_target_ops
int num_regs;
int *regmap;
int (*cannot_fetch_register) (int);
/* Returns 0 if we can store the register, 1 if we can not
store the register, and 2 if failure to store the register
is acceptable. */
int (*cannot_store_register) (int);
};

6
gdb/gdbserver/linux-ppc-low.c
View file

@ -46,11 +46,15 @@ static int ppc_regmap[] =
PT_FPR0*4+192, PT_FPR0*4+200, PT_FPR0*4+208, PT_FPR0*4+216,
PT_FPR0*4+224, PT_FPR0*4+232, PT_FPR0*4+240, PT_FPR0*4+248,
PT_NIP * 4, PT_MSR * 4, PT_CCR * 4, PT_LNK * 4,
PT_CTR * 4, PT_XER * 4, -1, };
PT_CTR * 4, PT_XER * 4, PT_FPSCR * 4, };
static int
ppc_cannot_store_register (int regno)
{
/* Some kernels do not allow us to store fpscr. */
if (regno == find_regno ("fpscr"))
return 2;
return 0;
}

2
gdb/regformats/reg-ppc.dat
View file

@ -73,4 +73,4 @@ expedite:r1,pc
32:lr
32:ctr
32:xer
0:
32:fpscr