Re: [PATCH] target/microblaze: Add gdbstub xml

2023-02-15 Thread Edgar E. Iglesias
On Thu, Feb 16, 2023 at 12:56 AM Richard Henderson <
richard.hender...@linaro.org> wrote:

> Alex, Edgar, this has been reviewed.  Will either of you take it with your
> trees, or shall
> I just queue it through tcg-next?
>
>

Hi Richard, yeah if you don't mind, please take it through your tree!

Thanks,
Edgar



> r~
>
> On 12/30/22 06:24, Richard Henderson wrote:
> > Mirroring the upstream gdb xml files, the two stack boundary
> > registers are separated out.
> >
> > Signed-off-by: Richard Henderson 
> > ---
> >
> > I did this thinking I would be fixing:
> >
> >TESTbasic gdbstub support on microblaze
> >Truncated register 35 in remote 'g' packet
> >Traceback (most recent call last):
> >  File "/home/rth/qemu/src/tests/tcg/multiarch/gdbstub/sha1.py",
> >line 71, in  if gdb.parse_and_eval('$pc') == 0:
> >gdb.error: No registers.
> >
> > but in the end it turned out that the gdb-multiarch supplied
> > by ubuntu 22.04 simply doesn't support MicroBlaze, as can be
> > seen with the "set architecture" command within gdb.
> >
> > (I built gdb from source, to try and debug why this still wasn't
> > working, only to find that it did.  :-P)
> >
> > Alex, any way to modify our gdb test to fail gracefully here?
> >
> > Regardless, having proper xml for all of our targets seems
> > like the correct way forward.
> >
> >
> > r~
> >
> > Cc: Alex Bennée 
> > Cc: Edgar E. Iglesias 
> > ---
> >   configs/targets/microblaze-linux-user.mak   |  1 +
> >   configs/targets/microblaze-softmmu.mak  |  1 +
> >   configs/targets/microblazeel-linux-user.mak |  1 +
> >   configs/targets/microblazeel-softmmu.mak|  1 +
> >   target/microblaze/cpu.h |  2 +
> >   target/microblaze/cpu.c |  7 ++-
> >   target/microblaze/gdbstub.c | 51 +++-
> >   gdb-xml/microblaze-core.xml | 67 +
> >   gdb-xml/microblaze-stack-protect.xml| 12 
> >   9 files changed, 128 insertions(+), 15 deletions(-)
> >   create mode 100644 gdb-xml/microblaze-core.xml
> >   create mode 100644 gdb-xml/microblaze-stack-protect.xml
> >
> > diff --git a/configs/targets/microblaze-linux-user.mak
> b/configs/targets/microblaze-linux-user.mak
> > index 4249a37f65..0a2322c249 100644
> > --- a/configs/targets/microblaze-linux-user.mak
> > +++ b/configs/targets/microblaze-linux-user.mak
> > @@ -3,3 +3,4 @@ TARGET_SYSTBL_ABI=common
> >   TARGET_SYSTBL=syscall.tbl
> >   TARGET_BIG_ENDIAN=y
> >   TARGET_HAS_BFLT=y
> > +TARGET_XML_FILES=gdb-xml/microblaze-core.xml
> gdb-xml/microblaze-stack-protect.xml
> > diff --git a/configs/targets/microblaze-softmmu.mak
> b/configs/targets/microblaze-softmmu.mak
> > index 8385e2d333..e84c0cc728 100644
> > --- a/configs/targets/microblaze-softmmu.mak
> > +++ b/configs/targets/microblaze-softmmu.mak
> > @@ -2,3 +2,4 @@ TARGET_ARCH=microblaze
> >   TARGET_BIG_ENDIAN=y
> >   TARGET_SUPPORTS_MTTCG=y
> >   TARGET_NEED_FDT=y
> > +TARGET_XML_FILES=gdb-xml/microblaze-core.xml
> gdb-xml/microblaze-stack-protect.xml
> > diff --git a/configs/targets/microblazeel-linux-user.mak
> b/configs/targets/microblazeel-linux-user.mak
> > index d0e775d840..270743156a 100644
> > --- a/configs/targets/microblazeel-linux-user.mak
> > +++ b/configs/targets/microblazeel-linux-user.mak
> > @@ -2,3 +2,4 @@ TARGET_ARCH=microblaze
> >   TARGET_SYSTBL_ABI=common
> >   TARGET_SYSTBL=syscall.tbl
> >   TARGET_HAS_BFLT=y
> > +TARGET_XML_FILES=gdb-xml/microblaze-core.xml
> gdb-xml/microblaze-stack-protect.xml
> > diff --git a/configs/targets/microblazeel-softmmu.mak
> b/configs/targets/microblazeel-softmmu.mak
> > index af40391f2f..9b688036bd 100644
> > --- a/configs/targets/microblazeel-softmmu.mak
> > +++ b/configs/targets/microblazeel-softmmu.mak
> > @@ -1,3 +1,4 @@
> >   TARGET_ARCH=microblaze
> >   TARGET_SUPPORTS_MTTCG=y
> >   TARGET_NEED_FDT=y
> > +TARGET_XML_FILES=gdb-xml/microblaze-core.xml
> gdb-xml/microblaze-stack-protect.xml
> > diff --git a/target/microblaze/cpu.h b/target/microblaze/cpu.h
> > index 1e84dd8f47..e541fbb0b3 100644
> > --- a/target/microblaze/cpu.h
> > +++ b/target/microblaze/cpu.h
> > @@ -367,6 +367,8 @@ hwaddr mb_cpu_get_phys_page_attrs_debug(CPUState
> *cpu, vaddr addr,
> >   MemTxAttrs *attrs);
> >   int mb_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
> >   int mb_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
> > +int mb_cpu_gdb_read_stack_protect(CPUArchState *cpu, GByteArray *buf,
> int reg);
> > +int mb_cpu_gdb_write_stack_protect(CPUArchState *cpu, uint8_t *buf, int
> reg);
> >
> >   static inline uint32_t mb_cpu_read_msr(const CPUMBState *env)
> >   {
> > diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
> > index 817681f9b2..a2d2f5c340 100644
> > --- a/target/microblaze/cpu.c
> > +++ b/target/microblaze/cpu.c
> > @@ -28,6 +28,7 @@
> >   #include "qemu/module.h"
> >   #include "hw/qdev-properties.h"
> >   

Re: [PATCH] target/microblaze: Add gdbstub xml

2023-02-15 Thread Richard Henderson
Alex, Edgar, this has been reviewed.  Will either of you take it with your trees, or shall 
I just queue it through tcg-next?


r~

On 12/30/22 06:24, Richard Henderson wrote:

Mirroring the upstream gdb xml files, the two stack boundary
registers are separated out.

Signed-off-by: Richard Henderson 
---

I did this thinking I would be fixing:

   TESTbasic gdbstub support on microblaze
   Truncated register 35 in remote 'g' packet
   Traceback (most recent call last):
 File "/home/rth/qemu/src/tests/tcg/multiarch/gdbstub/sha1.py",
   line 71, in  if gdb.parse_and_eval('$pc') == 0:
   gdb.error: No registers.

but in the end it turned out that the gdb-multiarch supplied
by ubuntu 22.04 simply doesn't support MicroBlaze, as can be
seen with the "set architecture" command within gdb.

(I built gdb from source, to try and debug why this still wasn't
working, only to find that it did.  :-P)

Alex, any way to modify our gdb test to fail gracefully here?

Regardless, having proper xml for all of our targets seems
like the correct way forward.


r~

Cc: Alex Bennée 
Cc: Edgar E. Iglesias 
---
  configs/targets/microblaze-linux-user.mak   |  1 +
  configs/targets/microblaze-softmmu.mak  |  1 +
  configs/targets/microblazeel-linux-user.mak |  1 +
  configs/targets/microblazeel-softmmu.mak|  1 +
  target/microblaze/cpu.h |  2 +
  target/microblaze/cpu.c |  7 ++-
  target/microblaze/gdbstub.c | 51 +++-
  gdb-xml/microblaze-core.xml | 67 +
  gdb-xml/microblaze-stack-protect.xml| 12 
  9 files changed, 128 insertions(+), 15 deletions(-)
  create mode 100644 gdb-xml/microblaze-core.xml
  create mode 100644 gdb-xml/microblaze-stack-protect.xml

diff --git a/configs/targets/microblaze-linux-user.mak 
b/configs/targets/microblaze-linux-user.mak
index 4249a37f65..0a2322c249 100644
--- a/configs/targets/microblaze-linux-user.mak
+++ b/configs/targets/microblaze-linux-user.mak
@@ -3,3 +3,4 @@ TARGET_SYSTBL_ABI=common
  TARGET_SYSTBL=syscall.tbl
  TARGET_BIG_ENDIAN=y
  TARGET_HAS_BFLT=y
+TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
gdb-xml/microblaze-stack-protect.xml
diff --git a/configs/targets/microblaze-softmmu.mak 
b/configs/targets/microblaze-softmmu.mak
index 8385e2d333..e84c0cc728 100644
--- a/configs/targets/microblaze-softmmu.mak
+++ b/configs/targets/microblaze-softmmu.mak
@@ -2,3 +2,4 @@ TARGET_ARCH=microblaze
  TARGET_BIG_ENDIAN=y
  TARGET_SUPPORTS_MTTCG=y
  TARGET_NEED_FDT=y
+TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
gdb-xml/microblaze-stack-protect.xml
diff --git a/configs/targets/microblazeel-linux-user.mak 
b/configs/targets/microblazeel-linux-user.mak
index d0e775d840..270743156a 100644
--- a/configs/targets/microblazeel-linux-user.mak
+++ b/configs/targets/microblazeel-linux-user.mak
@@ -2,3 +2,4 @@ TARGET_ARCH=microblaze
  TARGET_SYSTBL_ABI=common
  TARGET_SYSTBL=syscall.tbl
  TARGET_HAS_BFLT=y
+TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
gdb-xml/microblaze-stack-protect.xml
diff --git a/configs/targets/microblazeel-softmmu.mak 
b/configs/targets/microblazeel-softmmu.mak
index af40391f2f..9b688036bd 100644
--- a/configs/targets/microblazeel-softmmu.mak
+++ b/configs/targets/microblazeel-softmmu.mak
@@ -1,3 +1,4 @@
  TARGET_ARCH=microblaze
  TARGET_SUPPORTS_MTTCG=y
  TARGET_NEED_FDT=y
+TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
gdb-xml/microblaze-stack-protect.xml
diff --git a/target/microblaze/cpu.h b/target/microblaze/cpu.h
index 1e84dd8f47..e541fbb0b3 100644
--- a/target/microblaze/cpu.h
+++ b/target/microblaze/cpu.h
@@ -367,6 +367,8 @@ hwaddr mb_cpu_get_phys_page_attrs_debug(CPUState *cpu, 
vaddr addr,
  MemTxAttrs *attrs);
  int mb_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
  int mb_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
+int mb_cpu_gdb_read_stack_protect(CPUArchState *cpu, GByteArray *buf, int reg);
+int mb_cpu_gdb_write_stack_protect(CPUArchState *cpu, uint8_t *buf, int reg);
  
  static inline uint32_t mb_cpu_read_msr(const CPUMBState *env)

  {
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
index 817681f9b2..a2d2f5c340 100644
--- a/target/microblaze/cpu.c
+++ b/target/microblaze/cpu.c
@@ -28,6 +28,7 @@
  #include "qemu/module.h"
  #include "hw/qdev-properties.h"
  #include "exec/exec-all.h"
+#include "exec/gdbstub.h"
  #include "fpu/softfloat-helpers.h"
  
  static const struct {

@@ -294,6 +295,9 @@ static void mb_cpu_initfn(Object *obj)
  CPUMBState *env = >env;
  
  cpu_set_cpustate_pointers(cpu);

+gdb_register_coprocessor(CPU(cpu), mb_cpu_gdb_read_stack_protect,
+ mb_cpu_gdb_write_stack_protect, 2,
+ "microblaze-stack-protect.xml", 0);
  
  set_float_rounding_mode(float_round_nearest_even, >fp_status);
  
@@ -422,7 +426,8 @@ static void mb_cpu_class_init(ObjectClass *oc, void 

Re: [PATCH] target/microblaze: Add gdbstub xml

2022-12-30 Thread Edgar E. Iglesias
On Fri, Dec 30, 2022 at 08:24:19AM -0800, Richard Henderson wrote:
> Mirroring the upstream gdb xml files, the two stack boundary
> registers are separated out.

Reviewed-by: Edgar E. Iglesias 



> 
> Signed-off-by: Richard Henderson 
> ---
> 
> I did this thinking I would be fixing:
> 
>   TESTbasic gdbstub support on microblaze
>   Truncated register 35 in remote 'g' packet
>   Traceback (most recent call last):
> File "/home/rth/qemu/src/tests/tcg/multiarch/gdbstub/sha1.py",
>   line 71, in  if gdb.parse_and_eval('$pc') == 0:
>   gdb.error: No registers.
> 
> but in the end it turned out that the gdb-multiarch supplied
> by ubuntu 22.04 simply doesn't support MicroBlaze, as can be
> seen with the "set architecture" command within gdb.
> 
> (I built gdb from source, to try and debug why this still wasn't
> working, only to find that it did.  :-P)
> 
> Alex, any way to modify our gdb test to fail gracefully here?
> 
> Regardless, having proper xml for all of our targets seems
> like the correct way forward.
> 
> 
> r~
> 
> Cc: Alex Bennée 
> Cc: Edgar E. Iglesias 
> ---
>  configs/targets/microblaze-linux-user.mak   |  1 +
>  configs/targets/microblaze-softmmu.mak  |  1 +
>  configs/targets/microblazeel-linux-user.mak |  1 +
>  configs/targets/microblazeel-softmmu.mak|  1 +
>  target/microblaze/cpu.h |  2 +
>  target/microblaze/cpu.c |  7 ++-
>  target/microblaze/gdbstub.c | 51 +++-
>  gdb-xml/microblaze-core.xml | 67 +
>  gdb-xml/microblaze-stack-protect.xml| 12 
>  9 files changed, 128 insertions(+), 15 deletions(-)
>  create mode 100644 gdb-xml/microblaze-core.xml
>  create mode 100644 gdb-xml/microblaze-stack-protect.xml
> 
> diff --git a/configs/targets/microblaze-linux-user.mak 
> b/configs/targets/microblaze-linux-user.mak
> index 4249a37f65..0a2322c249 100644
> --- a/configs/targets/microblaze-linux-user.mak
> +++ b/configs/targets/microblaze-linux-user.mak
> @@ -3,3 +3,4 @@ TARGET_SYSTBL_ABI=common
>  TARGET_SYSTBL=syscall.tbl
>  TARGET_BIG_ENDIAN=y
>  TARGET_HAS_BFLT=y
> +TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
> gdb-xml/microblaze-stack-protect.xml
> diff --git a/configs/targets/microblaze-softmmu.mak 
> b/configs/targets/microblaze-softmmu.mak
> index 8385e2d333..e84c0cc728 100644
> --- a/configs/targets/microblaze-softmmu.mak
> +++ b/configs/targets/microblaze-softmmu.mak
> @@ -2,3 +2,4 @@ TARGET_ARCH=microblaze
>  TARGET_BIG_ENDIAN=y
>  TARGET_SUPPORTS_MTTCG=y
>  TARGET_NEED_FDT=y
> +TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
> gdb-xml/microblaze-stack-protect.xml
> diff --git a/configs/targets/microblazeel-linux-user.mak 
> b/configs/targets/microblazeel-linux-user.mak
> index d0e775d840..270743156a 100644
> --- a/configs/targets/microblazeel-linux-user.mak
> +++ b/configs/targets/microblazeel-linux-user.mak
> @@ -2,3 +2,4 @@ TARGET_ARCH=microblaze
>  TARGET_SYSTBL_ABI=common
>  TARGET_SYSTBL=syscall.tbl
>  TARGET_HAS_BFLT=y
> +TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
> gdb-xml/microblaze-stack-protect.xml
> diff --git a/configs/targets/microblazeel-softmmu.mak 
> b/configs/targets/microblazeel-softmmu.mak
> index af40391f2f..9b688036bd 100644
> --- a/configs/targets/microblazeel-softmmu.mak
> +++ b/configs/targets/microblazeel-softmmu.mak
> @@ -1,3 +1,4 @@
>  TARGET_ARCH=microblaze
>  TARGET_SUPPORTS_MTTCG=y
>  TARGET_NEED_FDT=y
> +TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
> gdb-xml/microblaze-stack-protect.xml
> diff --git a/target/microblaze/cpu.h b/target/microblaze/cpu.h
> index 1e84dd8f47..e541fbb0b3 100644
> --- a/target/microblaze/cpu.h
> +++ b/target/microblaze/cpu.h
> @@ -367,6 +367,8 @@ hwaddr mb_cpu_get_phys_page_attrs_debug(CPUState *cpu, 
> vaddr addr,
>  MemTxAttrs *attrs);
>  int mb_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
>  int mb_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
> +int mb_cpu_gdb_read_stack_protect(CPUArchState *cpu, GByteArray *buf, int 
> reg);
> +int mb_cpu_gdb_write_stack_protect(CPUArchState *cpu, uint8_t *buf, int reg);
>  
>  static inline uint32_t mb_cpu_read_msr(const CPUMBState *env)
>  {
> diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
> index 817681f9b2..a2d2f5c340 100644
> --- a/target/microblaze/cpu.c
> +++ b/target/microblaze/cpu.c
> @@ -28,6 +28,7 @@
>  #include "qemu/module.h"
>  #include "hw/qdev-properties.h"
>  #include "exec/exec-all.h"
> +#include "exec/gdbstub.h"
>  #include "fpu/softfloat-helpers.h"
>  
>  static const struct {
> @@ -294,6 +295,9 @@ static void mb_cpu_initfn(Object *obj)
>  CPUMBState *env = >env;
>  
>  cpu_set_cpustate_pointers(cpu);
> +gdb_register_coprocessor(CPU(cpu), mb_cpu_gdb_read_stack_protect,
> + mb_cpu_gdb_write_stack_protect, 2,
> + "microblaze-stack-protect.xml", 0);
>  
>  

[PATCH] target/microblaze: Add gdbstub xml

2022-12-30 Thread Richard Henderson
Mirroring the upstream gdb xml files, the two stack boundary
registers are separated out.

Signed-off-by: Richard Henderson 
---

I did this thinking I would be fixing:

  TESTbasic gdbstub support on microblaze
  Truncated register 35 in remote 'g' packet
  Traceback (most recent call last):
File "/home/rth/qemu/src/tests/tcg/multiarch/gdbstub/sha1.py",
  line 71, in  if gdb.parse_and_eval('$pc') == 0:
  gdb.error: No registers.

but in the end it turned out that the gdb-multiarch supplied
by ubuntu 22.04 simply doesn't support MicroBlaze, as can be
seen with the "set architecture" command within gdb.

(I built gdb from source, to try and debug why this still wasn't
working, only to find that it did.  :-P)

Alex, any way to modify our gdb test to fail gracefully here?

Regardless, having proper xml for all of our targets seems
like the correct way forward.


r~

Cc: Alex Bennée 
Cc: Edgar E. Iglesias 
---
 configs/targets/microblaze-linux-user.mak   |  1 +
 configs/targets/microblaze-softmmu.mak  |  1 +
 configs/targets/microblazeel-linux-user.mak |  1 +
 configs/targets/microblazeel-softmmu.mak|  1 +
 target/microblaze/cpu.h |  2 +
 target/microblaze/cpu.c |  7 ++-
 target/microblaze/gdbstub.c | 51 +++-
 gdb-xml/microblaze-core.xml | 67 +
 gdb-xml/microblaze-stack-protect.xml| 12 
 9 files changed, 128 insertions(+), 15 deletions(-)
 create mode 100644 gdb-xml/microblaze-core.xml
 create mode 100644 gdb-xml/microblaze-stack-protect.xml

diff --git a/configs/targets/microblaze-linux-user.mak 
b/configs/targets/microblaze-linux-user.mak
index 4249a37f65..0a2322c249 100644
--- a/configs/targets/microblaze-linux-user.mak
+++ b/configs/targets/microblaze-linux-user.mak
@@ -3,3 +3,4 @@ TARGET_SYSTBL_ABI=common
 TARGET_SYSTBL=syscall.tbl
 TARGET_BIG_ENDIAN=y
 TARGET_HAS_BFLT=y
+TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
gdb-xml/microblaze-stack-protect.xml
diff --git a/configs/targets/microblaze-softmmu.mak 
b/configs/targets/microblaze-softmmu.mak
index 8385e2d333..e84c0cc728 100644
--- a/configs/targets/microblaze-softmmu.mak
+++ b/configs/targets/microblaze-softmmu.mak
@@ -2,3 +2,4 @@ TARGET_ARCH=microblaze
 TARGET_BIG_ENDIAN=y
 TARGET_SUPPORTS_MTTCG=y
 TARGET_NEED_FDT=y
+TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
gdb-xml/microblaze-stack-protect.xml
diff --git a/configs/targets/microblazeel-linux-user.mak 
b/configs/targets/microblazeel-linux-user.mak
index d0e775d840..270743156a 100644
--- a/configs/targets/microblazeel-linux-user.mak
+++ b/configs/targets/microblazeel-linux-user.mak
@@ -2,3 +2,4 @@ TARGET_ARCH=microblaze
 TARGET_SYSTBL_ABI=common
 TARGET_SYSTBL=syscall.tbl
 TARGET_HAS_BFLT=y
+TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
gdb-xml/microblaze-stack-protect.xml
diff --git a/configs/targets/microblazeel-softmmu.mak 
b/configs/targets/microblazeel-softmmu.mak
index af40391f2f..9b688036bd 100644
--- a/configs/targets/microblazeel-softmmu.mak
+++ b/configs/targets/microblazeel-softmmu.mak
@@ -1,3 +1,4 @@
 TARGET_ARCH=microblaze
 TARGET_SUPPORTS_MTTCG=y
 TARGET_NEED_FDT=y
+TARGET_XML_FILES=gdb-xml/microblaze-core.xml 
gdb-xml/microblaze-stack-protect.xml
diff --git a/target/microblaze/cpu.h b/target/microblaze/cpu.h
index 1e84dd8f47..e541fbb0b3 100644
--- a/target/microblaze/cpu.h
+++ b/target/microblaze/cpu.h
@@ -367,6 +367,8 @@ hwaddr mb_cpu_get_phys_page_attrs_debug(CPUState *cpu, 
vaddr addr,
 MemTxAttrs *attrs);
 int mb_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
 int mb_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
+int mb_cpu_gdb_read_stack_protect(CPUArchState *cpu, GByteArray *buf, int reg);
+int mb_cpu_gdb_write_stack_protect(CPUArchState *cpu, uint8_t *buf, int reg);
 
 static inline uint32_t mb_cpu_read_msr(const CPUMBState *env)
 {
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
index 817681f9b2..a2d2f5c340 100644
--- a/target/microblaze/cpu.c
+++ b/target/microblaze/cpu.c
@@ -28,6 +28,7 @@
 #include "qemu/module.h"
 #include "hw/qdev-properties.h"
 #include "exec/exec-all.h"
+#include "exec/gdbstub.h"
 #include "fpu/softfloat-helpers.h"
 
 static const struct {
@@ -294,6 +295,9 @@ static void mb_cpu_initfn(Object *obj)
 CPUMBState *env = >env;
 
 cpu_set_cpustate_pointers(cpu);
+gdb_register_coprocessor(CPU(cpu), mb_cpu_gdb_read_stack_protect,
+ mb_cpu_gdb_write_stack_protect, 2,
+ "microblaze-stack-protect.xml", 0);
 
 set_float_rounding_mode(float_round_nearest_even, >fp_status);
 
@@ -422,7 +426,8 @@ static void mb_cpu_class_init(ObjectClass *oc, void *data)
 cc->sysemu_ops = _sysemu_ops;
 #endif
 device_class_set_props(dc, mb_properties);
-cc->gdb_num_core_regs = 32 + 27;
+cc->gdb_num_core_regs = 32 + 25;
+cc->gdb_core_xml_file = "microblaze-core.xml";