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authorUlrich Weigand <uweigand@de.ibm.com>2008-02-27 03:33:07 +0000
committerUlrich Weigand <uweigand@de.ibm.com>2008-02-27 03:33:07 +0000
commit5f8482be87d0ad43323618576bef96d98d9086c7 (patch)
treef6c83fbd2f162c3aae8a64b3f6bcf44ba609108e /gdb
parent5c856ad70c736af8ce32e59c9dcd91022bc79fe2 (diff)
downloadgdb-5f8482be87d0ad43323618576bef96d98d9086c7.tar.gz
* linux-low.h (struct linux_target_ops): Replace left_pad_xfer field
by collect_ptrace_register and supply_ptrace_register hooks. * linux-low.c (fetch_register): Use supply_ptrace_register callback instead of checking for the_low_target.left_pad_xfer. (usr_store_inferior_registers): Use collect_ptrace_register callback instead of checking for the_low_target.left_pad_xfer. * linux-s390-low.c (s390_collect_ptrace_register): New function. (s390_supply_ptrace_register): Likewise. (s390_fill_gregset): Call s390_collect_ptrace_register. (the_low_target): Update. * linux-ppc64-low.c (ppc_collect_ptrace_register): New function. (ppc_supply_ptrace_register): Likewise. (the_low_target): Update. * linux-i386-low.c (the_low_target): Update. * linux-x86-64-low.c (the_low_target): Update.
Diffstat (limited to 'gdb')
-rw-r--r--gdb/gdbserver/ChangeLog21
-rw-r--r--gdb/gdbserver/linux-i386-low.c3
-rw-r--r--gdb/gdbserver/linux-low.c15
-rw-r--r--gdb/gdbserver/linux-low.h7
-rw-r--r--gdb/gdbserver/linux-ppc64-low.c23
-rw-r--r--gdb/gdbserver/linux-s390-low.c47
-rw-r--r--gdb/gdbserver/linux-x86-64-low.c3
7 files changed, 104 insertions, 15 deletions
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index ae63d4e6cd5..d8e5c7ff2ae 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,26 @@
2008-02-27 Ulrich Weigand <uweigand@de.ibm.com>
+ * linux-low.h (struct linux_target_ops): Replace left_pad_xfer field
+ by collect_ptrace_register and supply_ptrace_register hooks.
+ * linux-low.c (fetch_register): Use supply_ptrace_register callback
+ instead of checking for the_low_target.left_pad_xfer.
+ (usr_store_inferior_registers): Use collect_ptrace_register callback
+ instead of checking for the_low_target.left_pad_xfer.
+
+ * linux-s390-low.c (s390_collect_ptrace_register): New function.
+ (s390_supply_ptrace_register): Likewise.
+ (s390_fill_gregset): Call s390_collect_ptrace_register.
+ (the_low_target): Update.
+
+ * linux-ppc64-low.c (ppc_collect_ptrace_register): New function.
+ (ppc_supply_ptrace_register): Likewise.
+ (the_low_target): Update.
+
+ * linux-i386-low.c (the_low_target): Update.
+ * linux-x86-64-low.c (the_low_target): Update.
+
+2008-02-27 Ulrich Weigand <uweigand@de.ibm.com>
+
* configure.srv [s390x-*-linux*]: Set srv_regobj to include both
reg-s390.o and reg-s390x.o.
diff --git a/gdb/gdbserver/linux-i386-low.c b/gdb/gdbserver/linux-i386-low.c
index 433d0855c71..c3cccb663ab 100644
--- a/gdb/gdbserver/linux-i386-low.c
+++ b/gdb/gdbserver/linux-i386-low.c
@@ -205,6 +205,7 @@ struct linux_target_ops the_low_target = {
NULL,
NULL,
NULL,
- 0,
+ NULL,
+ NULL,
"i386"
};
diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index 732aafbc80f..1d2b422377b 100644
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -1401,10 +1401,9 @@ fetch_register (int regno)
goto error_exit;
}
}
- if (the_low_target.left_pad_xfer
- && register_size (regno) < sizeof (PTRACE_XFER_TYPE))
- supply_register (regno, (buf + sizeof (PTRACE_XFER_TYPE)
- - register_size (regno)));
+
+ if (the_low_target.supply_ptrace_register)
+ the_low_target.supply_ptrace_register (regno, buf);
else
supply_register (regno, buf);
@@ -1448,12 +1447,12 @@ usr_store_inferior_registers (int regno)
& - sizeof (PTRACE_XFER_TYPE);
buf = alloca (size);
memset (buf, 0, size);
- if (the_low_target.left_pad_xfer
- && register_size (regno) < sizeof (PTRACE_XFER_TYPE))
- collect_register (regno, (buf + sizeof (PTRACE_XFER_TYPE)
- - register_size (regno)));
+
+ if (the_low_target.collect_ptrace_register)
+ the_low_target.collect_ptrace_register (regno, buf);
else
collect_register (regno, buf);
+
for (i = 0; i < size; i += sizeof (PTRACE_XFER_TYPE))
{
errno = 0;
diff --git a/gdb/gdbserver/linux-low.h b/gdb/gdbserver/linux-low.h
index 698a1b07f6d..ccbeb254f7c 100644
--- a/gdb/gdbserver/linux-low.h
+++ b/gdb/gdbserver/linux-low.h
@@ -69,9 +69,10 @@ struct linux_target_ops
int (*stopped_by_watchpoint) (void);
CORE_ADDR (*stopped_data_address) (void);
- /* Whether to left-pad registers for PEEKUSR/POKEUSR if they are smaller
- than an xfer unit. */
- int left_pad_xfer;
+ /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular
+ for registers smaller than an xfer unit). */
+ void (*collect_ptrace_register) (int regno, char *buf);
+ void (*supply_ptrace_register) (int regno, const char *buf);
/* What string to report to GDB when it asks for the architecture,
or NULL not to answer. */
diff --git a/gdb/gdbserver/linux-ppc64-low.c b/gdb/gdbserver/linux-ppc64-low.c
index 3897d73b102..f216e9dc7b8 100644
--- a/gdb/gdbserver/linux-ppc64-low.c
+++ b/gdb/gdbserver/linux-ppc64-low.c
@@ -64,6 +64,26 @@ ppc_cannot_fetch_register (int regno)
return 0;
}
+static void
+ppc_collect_ptrace_register (int regno, char *buf)
+{
+ int size = register_size (regno);
+ if (size < sizeof (long))
+ collect_register (regno, buf + sizeof (long) - size);
+ else
+ collect_register (regno, buf);
+}
+
+static void
+ppc_supply_ptrace_register (int regno, const char *buf)
+{
+ int size = register_size (regno);
+ if (size < sizeof (long))
+ supply_register (regno, buf + sizeof (long) - size);
+ else
+ supply_register (regno, buf);
+}
+
static CORE_ADDR
ppc_get_pc (void)
{
@@ -187,5 +207,6 @@ struct linux_target_ops the_low_target = {
NULL,
NULL,
NULL,
- 1
+ ppc_collect_ptrace_register,
+ ppc_supply_ptrace_register,
};
diff --git a/gdb/gdbserver/linux-s390-low.c b/gdb/gdbserver/linux-s390-low.c
index d6739ab1be8..090ef275a2d 100644
--- a/gdb/gdbserver/linux-s390-low.c
+++ b/gdb/gdbserver/linux-s390-low.c
@@ -79,6 +79,45 @@ s390_cannot_store_register (int regno)
return 0;
}
+static void
+s390_collect_ptrace_register (int regno, char *buf)
+{
+ int size = register_size (regno);
+ if (size < sizeof (long))
+ {
+ memset (buf, 0, sizeof (long));
+
+ if (regno == find_regno ("pswa")
+ || (regno >= find_regno ("r0") && regno <= find_regno ("r15")))
+ collect_register (regno, buf + sizeof (long) - size);
+ else
+ collect_register (regno, buf);
+
+ /* When debugging a 32-bit inferior on a 64-bit host, make sure
+ the 31-bit addressing mode bit is set in the PSW mask. */
+ if (regno == find_regno ("pswm"))
+ buf[size] |= 0x80;
+ }
+ else
+ collect_register (regno, buf);
+}
+
+static void
+s390_supply_ptrace_register (int regno, const char *buf)
+{
+ int size = register_size (regno);
+ if (size < sizeof (long))
+ {
+ if (regno == find_regno ("pswa")
+ || (regno >= find_regno ("r0") && regno <= find_regno ("r15")))
+ supply_register (regno, buf + sizeof (long) - size);
+ else
+ supply_register (regno, buf);
+ }
+ else
+ supply_register (regno, buf);
+}
+
/* Provide only a fill function for the general register set. ps_lgetregs
will use this for NPTL support. */
@@ -87,7 +126,7 @@ static void s390_fill_gregset (void *buf)
int i;
for (i = 0; i < 34; i++)
- collect_register (i, (char *) buf + s390_regmap[i]);
+ s390_collect_ptrace_register (i, (char *) buf + s390_regmap[i]);
}
struct regset_info target_regsets[] = {
@@ -179,5 +218,11 @@ struct linux_target_ops the_low_target = {
NULL,
s390_breakpoint_len,
s390_breakpoint_at,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ s390_collect_ptrace_register,
+ s390_supply_ptrace_register,
};
diff --git a/gdb/gdbserver/linux-x86-64-low.c b/gdb/gdbserver/linux-x86-64-low.c
index 80f5c6dbc38..b4a2f6be594 100644
--- a/gdb/gdbserver/linux-x86-64-low.c
+++ b/gdb/gdbserver/linux-x86-64-low.c
@@ -179,6 +179,7 @@ struct linux_target_ops the_low_target = {
NULL,
NULL,
NULL,
- 0,
+ NULL,
+ NULL,
"i386:x86-64",
};