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* ppc-linux-nat.c (ppc_linux_target_wordsize): New function.

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(ppc_linux_auxv_parse): New function.
	(ppc_linux_read_description): Use ppc_linux_target_wordsize.
	(_initialize_ppc_linux_nat): Install ppc_linux_auxv_parse.
This commit is contained in:
Ulrich Weigand 2009-04-03 16:07:04 +00:00
parent 3df502ae79
commit 409c383c98
2 changed files with 62 additions and 18 deletions
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9
gdb/ChangeLog
View File

@ -1,4 +1,11 @@
2009-04-93 Ulrich Weigand <uweigand@de.ibm.com>
2009-04-03 Ulrich Weigand <uweigand@de.ibm.com>
* ppc-linux-nat.c (ppc_linux_target_wordsize): New function.
(ppc_linux_auxv_parse): New function.
(ppc_linux_read_description): Use ppc_linux_target_wordsize.
(_initialize_ppc_linux_nat): Install ppc_linux_auxv_parse.
2009-04-03 Ulrich Weigand <uweigand@de.ibm.com>
* spu-linux-nat.c (spu_bfd_open): Set filename of in-memory
BFD to contents of SPU name note.

71
gdb/ppc-linux-nat.c
View File

@ -1240,6 +1240,51 @@ fill_fpregset (const struct regcache *regcache,
fpregsetp, sizeof (*fpregsetp));
}
static int
ppc_linux_target_wordsize (void)
{
int wordsize = 4;
/* Check for 64-bit inferior process. This is the case when the host is
64-bit, and in addition the top bit of the MSR register is set. */
#ifdef __powerpc64__
long msr;
int tid = TIDGET (inferior_ptid);
if (tid == 0)
tid = PIDGET (inferior_ptid);
errno = 0;
msr = (long) ptrace (PTRACE_PEEKUSER, tid, PT_MSR * 8, 0);
if (errno == 0 && msr < 0)
wordsize = 8;
#endif
return wordsize;
}
static int
ppc_linux_auxv_parse (struct target_ops *ops, gdb_byte **readptr,
gdb_byte *endptr, CORE_ADDR *typep, CORE_ADDR *valp)
{
int sizeof_auxv_field = ppc_linux_target_wordsize ();
gdb_byte *ptr = *readptr;
if (endptr == ptr)
return 0;
if (endptr - ptr < sizeof_auxv_field * 2)
return -1;
*typep = extract_unsigned_integer (ptr, sizeof_auxv_field);
ptr += sizeof_auxv_field;
*valp = extract_unsigned_integer (ptr, sizeof_auxv_field);
ptr += sizeof_auxv_field;
*readptr = ptr;
return 1;
}
static const struct target_desc *
ppc_linux_read_description (struct target_ops *ops)
{
@ -1299,24 +1344,15 @@ ppc_linux_read_description (struct target_ops *ops)
if (ppc_linux_get_hwcap () & PPC_FEATURE_HAS_DFP)
isa205 = 1;
/* Check for 64-bit inferior process. This is the case when the host is
64-bit, and in addition the top bit of the MSR register is set. */
#ifdef __powerpc64__
{
long msr;
errno = 0;
msr = (long) ptrace (PTRACE_PEEKUSER, tid, PT_MSR * 8, 0);
if (errno == 0 && msr < 0)
{
if (vsx)
return isa205? tdesc_powerpc_isa205_vsx64l : tdesc_powerpc_vsx64l;
else if (altivec)
return isa205? tdesc_powerpc_isa205_altivec64l : tdesc_powerpc_altivec64l;
if (ppc_linux_target_wordsize () == 8)
{
if (vsx)
return isa205? tdesc_powerpc_isa205_vsx64l : tdesc_powerpc_vsx64l;
else if (altivec)
return isa205? tdesc_powerpc_isa205_altivec64l : tdesc_powerpc_altivec64l;
return isa205? tdesc_powerpc_isa205_64l : tdesc_powerpc_64l;
}
}
#endif
return isa205? tdesc_powerpc_isa205_64l : tdesc_powerpc_64l;
}
if (vsx)
return isa205? tdesc_powerpc_isa205_vsx32l : tdesc_powerpc_vsx32l;
@ -1350,6 +1386,7 @@ _initialize_ppc_linux_nat (void)
t->to_watchpoint_addr_within_range = ppc_linux_watchpoint_addr_within_range;
t->to_read_description = ppc_linux_read_description;
t->to_auxv_parse = ppc_linux_auxv_parse;
/* Register the target. */
linux_nat_add_target (t);