Re: [kvm-unit-tests PATCH 04/32] powerpc: interrupt stack backtracing
On Fri Mar 1, 2024 at 7:53 PM AEST, Thomas Huth wrote:
> On 26/02/2024 11.11, Nicholas Piggin wrote:
> > Add support for backtracing across interrupt stacks, and
> > add interrupt frame backtrace for unhandled interrupts.
> >
> > Signed-off-by: Nicholas Piggin
> > ---
> > lib/powerpc/processor.c | 4 ++-
> > lib/ppc64/asm/stack.h | 3 +++
> > lib/ppc64/stack.c | 55 +
> > powerpc/Makefile.ppc64 | 1 +
> > powerpc/cstart64.S | 7 --
> > 5 files changed, 67 insertions(+), 3 deletions(-)
> > create mode 100644 lib/ppc64/stack.c
> >
> > diff --git a/lib/powerpc/processor.c b/lib/powerpc/processor.c
> > index ad0d95666..114584024 100644
> > --- a/lib/powerpc/processor.c
> > +++ b/lib/powerpc/processor.c
> > @@ -51,7 +51,9 @@ void do_handle_exception(struct pt_regs *regs)
> > return;
> > }
> >
> > - printf("unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n",
> > regs->trap, regs->nip, regs->msr);
> > + printf("Unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n",
> > + regs->trap, regs->nip, regs->msr);
> > + dump_frame_stack((void *)regs->nip, (void *)regs->gpr[1]);
> > abort();
> > }
> >
> > diff --git a/lib/ppc64/asm/stack.h b/lib/ppc64/asm/stack.h
> > index 9734bbb8f..94fd1021c 100644
> > --- a/lib/ppc64/asm/stack.h
> > +++ b/lib/ppc64/asm/stack.h
> > @@ -5,4 +5,7 @@
> > #error Do not directly include . Just use .
> > #endif
> >
> > +#define HAVE_ARCH_BACKTRACE
> > +#define HAVE_ARCH_BACKTRACE_FRAME
> > +
> > #endif
> > diff --git a/lib/ppc64/stack.c b/lib/ppc64/stack.c
> > new file mode 100644
> > index 0..fcb7fa860
> > --- /dev/null
> > +++ b/lib/ppc64/stack.c
> > @@ -0,0 +1,55 @@
> > +#include
> > +#include
> > +#include
> > +
> > +extern char exception_stack_marker[];
> > +
> > +int backtrace_frame(const void *frame, const void **return_addrs, int
> > max_depth)
> > +{
> > + static int walking;
> > + int depth = 0;
> > + const unsigned long *bp = (unsigned long *)frame;
> > + void *return_addr;
> > +
> > + asm volatile("" ::: "lr"); /* Force it to save LR */
> > +
> > + if (walking) {
> > + printf("RECURSIVE STACK WALK!!!\n");
> > + return 0;
> > + }
> > + walking = 1;
> > +
> > + bp = (unsigned long *)bp[0];
> > + return_addr = (void *)bp[2];
> > +
> > + for (depth = 0; bp && depth < max_depth; depth++) {
> > + return_addrs[depth] = return_addr;
> > + if (return_addrs[depth] == 0)
> > + break;
> > + if (return_addrs[depth] == exception_stack_marker) {
> > + struct pt_regs *regs;
> > +
> > + regs = (void *)bp + STACK_FRAME_OVERHEAD;
> > + bp = (unsigned long *)bp[0];
> > + /* Represent interrupt frame with vector number */
> > + return_addr = (void *)regs->trap;
> > + if (depth + 1 < max_depth) {
> > + depth++;
> > + return_addrs[depth] = return_addr;
> > + return_addr = (void *)regs->nip;
> > + }
> > + } else {
> > + bp = (unsigned long *)bp[0];
> > + return_addr = (void *)bp[2];
> > + }
> > + }
> > +
> > + walking = 0;
> > + return depth;
> > +}
> > +
> > +int backtrace(const void **return_addrs, int max_depth)
> > +{
> > + return backtrace_frame(__builtin_frame_address(0), return_addrs,
> > + max_depth);
> > +}
> > diff --git a/powerpc/Makefile.ppc64 b/powerpc/Makefile.ppc64
> > index b0ed2b104..eb682c226 100644
> > --- a/powerpc/Makefile.ppc64
> > +++ b/powerpc/Makefile.ppc64
> > @@ -17,6 +17,7 @@ cstart.o = $(TEST_DIR)/cstart64.o
> > reloc.o = $(TEST_DIR)/reloc64.o
> >
> > OBJDIRS += lib/ppc64
> > +cflatobjs += lib/ppc64/stack.o
> >
> > # ppc64 specific tests
> > tests = $(TEST_DIR)/spapr_vpa.elf
> > diff --git a/powerpc/cstart64.S b/powerpc/cstart64.S
> > index 14ab0c6c8..278af84a6 100644
> > --- a/powerpc/cstart64.S
> > +++ b/powerpc/cstart64.S
> > @@ -188,6 +188,7 @@ call_handler:
> > .endr
> > mfsprg1 r0
> > std r0,GPR1(r1)
> > + std r0,0(r1)
> >
> > /* lr, xer, ccr */
> >
> > @@ -206,12 +207,12 @@ call_handler:
> > subir31, r31, 0b - start_text
> > ld r2, (p_toc_text - start_text)(r31)
> >
> > - /* FIXME: build stack frame */
> > -
> > /* call generic handler */
> >
> > addir3,r1,STACK_FRAME_OVERHEAD
> > bl do_handle_exception
> > + .global exception_stack_marker
> > +exception_stack_marker:
> >
> > /* restore context */
> >
> > @@ -321,6 +322,7 @@ handler_trampoline:
> > /* nip and msr */
> > mfsrr0 r0
> > std r0, _NIP(r1)
> > + std r0, INT_FRAME_SIZE+16(r1)
>
> So if I got that right, INT_FRAME_SIZE+16 points to the stack frame
Re: [kvm-unit-tests PATCH 04/32] powerpc: interrupt stack backtracing
On 26/02/2024 11.11, Nicholas Piggin wrote:
Add support for backtracing across interrupt stacks, and
add interrupt frame backtrace for unhandled interrupts.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/processor.c | 4 ++-
lib/ppc64/asm/stack.h | 3 +++
lib/ppc64/stack.c | 55 +
powerpc/Makefile.ppc64 | 1 +
powerpc/cstart64.S | 7 --
5 files changed, 67 insertions(+), 3 deletions(-)
create mode 100644 lib/ppc64/stack.c
diff --git a/lib/powerpc/processor.c b/lib/powerpc/processor.c
index ad0d95666..114584024 100644
--- a/lib/powerpc/processor.c
+++ b/lib/powerpc/processor.c
@@ -51,7 +51,9 @@ void do_handle_exception(struct pt_regs *regs)
return;
}
- printf("unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n", regs->trap, regs->nip, regs->msr);
+ printf("Unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n",
+ regs->trap, regs->nip, regs->msr);
+ dump_frame_stack((void *)regs->nip, (void *)regs->gpr[1]);
abort();
}
diff --git a/lib/ppc64/asm/stack.h b/lib/ppc64/asm/stack.h
index 9734bbb8f..94fd1021c 100644
--- a/lib/ppc64/asm/stack.h
+++ b/lib/ppc64/asm/stack.h
@@ -5,4 +5,7 @@
#error Do not directly include . Just use .
#endif
+#define HAVE_ARCH_BACKTRACE
+#define HAVE_ARCH_BACKTRACE_FRAME
+
#endif
diff --git a/lib/ppc64/stack.c b/lib/ppc64/stack.c
new file mode 100644
index 0..fcb7fa860
--- /dev/null
+++ b/lib/ppc64/stack.c
@@ -0,0 +1,55 @@
+#include
+#include
+#include
+
+extern char exception_stack_marker[];
+
+int backtrace_frame(const void *frame, const void **return_addrs, int
max_depth)
+{
+ static int walking;
+ int depth = 0;
+ const unsigned long *bp = (unsigned long *)frame;
+ void *return_addr;
+
+ asm volatile("" ::: "lr"); /* Force it to save LR */
+
+ if (walking) {
+ printf("RECURSIVE STACK WALK!!!\n");
+ return 0;
+ }
+ walking = 1;
+
+ bp = (unsigned long *)bp[0];
+ return_addr = (void *)bp[2];
+
+ for (depth = 0; bp && depth < max_depth; depth++) {
+ return_addrs[depth] = return_addr;
+ if (return_addrs[depth] == 0)
+ break;
+ if (return_addrs[depth] == exception_stack_marker) {
+ struct pt_regs *regs;
+
+ regs = (void *)bp + STACK_FRAME_OVERHEAD;
+ bp = (unsigned long *)bp[0];
+ /* Represent interrupt frame with vector number */
+ return_addr = (void *)regs->trap;
+ if (depth + 1 < max_depth) {
+ depth++;
+ return_addrs[depth] = return_addr;
+ return_addr = (void *)regs->nip;
+ }
+ } else {
+ bp = (unsigned long *)bp[0];
+ return_addr = (void *)bp[2];
+ }
+ }
+
+ walking = 0;
+ return depth;
+}
+
+int backtrace(const void **return_addrs, int max_depth)
+{
+ return backtrace_frame(__builtin_frame_address(0), return_addrs,
+ max_depth);
+}
diff --git a/powerpc/Makefile.ppc64 b/powerpc/Makefile.ppc64
index b0ed2b104..eb682c226 100644
--- a/powerpc/Makefile.ppc64
+++ b/powerpc/Makefile.ppc64
@@ -17,6 +17,7 @@ cstart.o = $(TEST_DIR)/cstart64.o
reloc.o = $(TEST_DIR)/reloc64.o
OBJDIRS += lib/ppc64
+cflatobjs += lib/ppc64/stack.o
# ppc64 specific tests
tests = $(TEST_DIR)/spapr_vpa.elf
diff --git a/powerpc/cstart64.S b/powerpc/cstart64.S
index 14ab0c6c8..278af84a6 100644
--- a/powerpc/cstart64.S
+++ b/powerpc/cstart64.S
@@ -188,6 +188,7 @@ call_handler:
.endr
mfsprg1 r0
std r0,GPR1(r1)
+ std r0,0(r1)
/* lr, xer, ccr */
@@ -206,12 +207,12 @@ call_handler:
subir31, r31, 0b - start_text
ld r2, (p_toc_text - start_text)(r31)
- /* FIXME: build stack frame */
-
/* call generic handler */
addi r3,r1,STACK_FRAME_OVERHEAD
bl do_handle_exception
+ .global exception_stack_marker
+exception_stack_marker:
/* restore context */
@@ -321,6 +322,7 @@ handler_trampoline:
/* nip and msr */
mfsrr0 r0
std r0, _NIP(r1)
+ std r0, INT_FRAME_SIZE+16(r1)
So if I got that right, INT_FRAME_SIZE+16 points to the stack frame of the
function that was running before the interrupt handler? Is it such a good
idea to change that here? Please add a comment here explaining this line.
Thanks!
mfsrr1 r0
std r0, _MSR(r1)
@@ -337,6 +339,7 @@ handler_htrampoline:
/* nip and msr */
mfspr r0, SPR_HSRR0
std r0, _NIP(r1)
+ std r0, INT_FRAME_SIZE+16(r1)
dito.
mfspr r0, SPR_HSRR1
Re: [kvm-unit-tests PATCH 04/32] powerpc: interrupt stack backtracing
On Wed Feb 28, 2024 at 9:46 PM AEST, Andrew Jones wrote:
> On Mon, Feb 26, 2024 at 08:11:50PM +1000, Nicholas Piggin wrote:
> > Add support for backtracing across interrupt stacks, and
> > add interrupt frame backtrace for unhandled interrupts.
> >
> > Signed-off-by: Nicholas Piggin
> > ---
> > lib/powerpc/processor.c | 4 ++-
> > lib/ppc64/asm/stack.h | 3 +++
> > lib/ppc64/stack.c | 55 +
> > powerpc/Makefile.ppc64 | 1 +
> > powerpc/cstart64.S | 7 --
> > 5 files changed, 67 insertions(+), 3 deletions(-)
> > create mode 100644 lib/ppc64/stack.c
> >
> > diff --git a/lib/powerpc/processor.c b/lib/powerpc/processor.c
> > index ad0d95666..114584024 100644
> > --- a/lib/powerpc/processor.c
> > +++ b/lib/powerpc/processor.c
> > @@ -51,7 +51,9 @@ void do_handle_exception(struct pt_regs *regs)
> > return;
> > }
> >
> > - printf("unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n",
> > regs->trap, regs->nip, regs->msr);
> > + printf("Unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n",
> > + regs->trap, regs->nip, regs->msr);
> > + dump_frame_stack((void *)regs->nip, (void *)regs->gpr[1]);
> > abort();
> > }
> >
> > diff --git a/lib/ppc64/asm/stack.h b/lib/ppc64/asm/stack.h
> > index 9734bbb8f..94fd1021c 100644
> > --- a/lib/ppc64/asm/stack.h
> > +++ b/lib/ppc64/asm/stack.h
> > @@ -5,4 +5,7 @@
> > #error Do not directly include . Just use .
> > #endif
> >
> > +#define HAVE_ARCH_BACKTRACE
> > +#define HAVE_ARCH_BACKTRACE_FRAME
> > +
> > #endif
> > diff --git a/lib/ppc64/stack.c b/lib/ppc64/stack.c
> > new file mode 100644
> > index 0..fcb7fa860
> > --- /dev/null
> > +++ b/lib/ppc64/stack.c
> > @@ -0,0 +1,55 @@
> > +#include
> > +#include
> > +#include
> > +
> > +extern char exception_stack_marker[];
> > +
> > +int backtrace_frame(const void *frame, const void **return_addrs, int
> > max_depth)
> > +{
> > + static int walking;
> > + int depth = 0;
> > + const unsigned long *bp = (unsigned long *)frame;
> > + void *return_addr;
> > +
> > + asm volatile("" ::: "lr"); /* Force it to save LR */
> > +
> > + if (walking) {
> > + printf("RECURSIVE STACK WALK!!!\n");
> > + return 0;
> > + }
> > + walking = 1;
> > +
> > + bp = (unsigned long *)bp[0];
> > + return_addr = (void *)bp[2];
> > +
> > + for (depth = 0; bp && depth < max_depth; depth++) {
> > + return_addrs[depth] = return_addr;
> > + if (return_addrs[depth] == 0)
> > + break;
> > + if (return_addrs[depth] == exception_stack_marker) {
> > + struct pt_regs *regs;
> > +
> > + regs = (void *)bp + STACK_FRAME_OVERHEAD;
> > + bp = (unsigned long *)bp[0];
> > + /* Represent interrupt frame with vector number */
> > + return_addr = (void *)regs->trap;
> > + if (depth + 1 < max_depth) {
> > + depth++;
> > + return_addrs[depth] = return_addr;
> > + return_addr = (void *)regs->nip;
> > + }
> > + } else {
> > + bp = (unsigned long *)bp[0];
> > + return_addr = (void *)bp[2];
> > + }
> > + }
> > +
> > + walking = 0;
> > + return depth;
> > +}
> > +
> > +int backtrace(const void **return_addrs, int max_depth)
> > +{
> > + return backtrace_frame(__builtin_frame_address(0), return_addrs,
> > + max_depth);
> > +}
>
> I'm about to post a series which has a couple treewide tracing changes
> in them. Depending on which series goes first the other will need to
> accommodate.
Yeah that's fine.
Thanks,
Nick
Re: [kvm-unit-tests PATCH 04/32] powerpc: interrupt stack backtracing
On Mon, Feb 26, 2024 at 08:11:50PM +1000, Nicholas Piggin wrote:
> Add support for backtracing across interrupt stacks, and
> add interrupt frame backtrace for unhandled interrupts.
>
> Signed-off-by: Nicholas Piggin
> ---
> lib/powerpc/processor.c | 4 ++-
> lib/ppc64/asm/stack.h | 3 +++
> lib/ppc64/stack.c | 55 +
> powerpc/Makefile.ppc64 | 1 +
> powerpc/cstart64.S | 7 --
> 5 files changed, 67 insertions(+), 3 deletions(-)
> create mode 100644 lib/ppc64/stack.c
>
> diff --git a/lib/powerpc/processor.c b/lib/powerpc/processor.c
> index ad0d95666..114584024 100644
> --- a/lib/powerpc/processor.c
> +++ b/lib/powerpc/processor.c
> @@ -51,7 +51,9 @@ void do_handle_exception(struct pt_regs *regs)
> return;
> }
>
> - printf("unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n",
> regs->trap, regs->nip, regs->msr);
> + printf("Unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n",
> + regs->trap, regs->nip, regs->msr);
> + dump_frame_stack((void *)regs->nip, (void *)regs->gpr[1]);
> abort();
> }
>
> diff --git a/lib/ppc64/asm/stack.h b/lib/ppc64/asm/stack.h
> index 9734bbb8f..94fd1021c 100644
> --- a/lib/ppc64/asm/stack.h
> +++ b/lib/ppc64/asm/stack.h
> @@ -5,4 +5,7 @@
> #error Do not directly include . Just use .
> #endif
>
> +#define HAVE_ARCH_BACKTRACE
> +#define HAVE_ARCH_BACKTRACE_FRAME
> +
> #endif
> diff --git a/lib/ppc64/stack.c b/lib/ppc64/stack.c
> new file mode 100644
> index 0..fcb7fa860
> --- /dev/null
> +++ b/lib/ppc64/stack.c
> @@ -0,0 +1,55 @@
> +#include
> +#include
> +#include
> +
> +extern char exception_stack_marker[];
> +
> +int backtrace_frame(const void *frame, const void **return_addrs, int
> max_depth)
> +{
> + static int walking;
> + int depth = 0;
> + const unsigned long *bp = (unsigned long *)frame;
> + void *return_addr;
> +
> + asm volatile("" ::: "lr"); /* Force it to save LR */
> +
> + if (walking) {
> + printf("RECURSIVE STACK WALK!!!\n");
> + return 0;
> + }
> + walking = 1;
> +
> + bp = (unsigned long *)bp[0];
> + return_addr = (void *)bp[2];
> +
> + for (depth = 0; bp && depth < max_depth; depth++) {
> + return_addrs[depth] = return_addr;
> + if (return_addrs[depth] == 0)
> + break;
> + if (return_addrs[depth] == exception_stack_marker) {
> + struct pt_regs *regs;
> +
> + regs = (void *)bp + STACK_FRAME_OVERHEAD;
> + bp = (unsigned long *)bp[0];
> + /* Represent interrupt frame with vector number */
> + return_addr = (void *)regs->trap;
> + if (depth + 1 < max_depth) {
> + depth++;
> + return_addrs[depth] = return_addr;
> + return_addr = (void *)regs->nip;
> + }
> + } else {
> + bp = (unsigned long *)bp[0];
> + return_addr = (void *)bp[2];
> + }
> + }
> +
> + walking = 0;
> + return depth;
> +}
> +
> +int backtrace(const void **return_addrs, int max_depth)
> +{
> + return backtrace_frame(__builtin_frame_address(0), return_addrs,
> +max_depth);
> +}
I'm about to post a series which has a couple treewide tracing changes
in them. Depending on which series goes first the other will need to
accommodate.
Thanks,
drew
[kvm-unit-tests PATCH 04/32] powerpc: interrupt stack backtracing
Add support for backtracing across interrupt stacks, and
add interrupt frame backtrace for unhandled interrupts.
Signed-off-by: Nicholas Piggin
---
lib/powerpc/processor.c | 4 ++-
lib/ppc64/asm/stack.h | 3 +++
lib/ppc64/stack.c | 55 +
powerpc/Makefile.ppc64 | 1 +
powerpc/cstart64.S | 7 --
5 files changed, 67 insertions(+), 3 deletions(-)
create mode 100644 lib/ppc64/stack.c
diff --git a/lib/powerpc/processor.c b/lib/powerpc/processor.c
index ad0d95666..114584024 100644
--- a/lib/powerpc/processor.c
+++ b/lib/powerpc/processor.c
@@ -51,7 +51,9 @@ void do_handle_exception(struct pt_regs *regs)
return;
}
- printf("unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n",
regs->trap, regs->nip, regs->msr);
+ printf("Unhandled cpu exception %#lx at NIA:0x%016lx MSR:0x%016lx\n",
+ regs->trap, regs->nip, regs->msr);
+ dump_frame_stack((void *)regs->nip, (void *)regs->gpr[1]);
abort();
}
diff --git a/lib/ppc64/asm/stack.h b/lib/ppc64/asm/stack.h
index 9734bbb8f..94fd1021c 100644
--- a/lib/ppc64/asm/stack.h
+++ b/lib/ppc64/asm/stack.h
@@ -5,4 +5,7 @@
#error Do not directly include . Just use .
#endif
+#define HAVE_ARCH_BACKTRACE
+#define HAVE_ARCH_BACKTRACE_FRAME
+
#endif
diff --git a/lib/ppc64/stack.c b/lib/ppc64/stack.c
new file mode 100644
index 0..fcb7fa860
--- /dev/null
+++ b/lib/ppc64/stack.c
@@ -0,0 +1,55 @@
+#include
+#include
+#include
+
+extern char exception_stack_marker[];
+
+int backtrace_frame(const void *frame, const void **return_addrs, int
max_depth)
+{
+ static int walking;
+ int depth = 0;
+ const unsigned long *bp = (unsigned long *)frame;
+ void *return_addr;
+
+ asm volatile("" ::: "lr"); /* Force it to save LR */
+
+ if (walking) {
+ printf("RECURSIVE STACK WALK!!!\n");
+ return 0;
+ }
+ walking = 1;
+
+ bp = (unsigned long *)bp[0];
+ return_addr = (void *)bp[2];
+
+ for (depth = 0; bp && depth < max_depth; depth++) {
+ return_addrs[depth] = return_addr;
+ if (return_addrs[depth] == 0)
+ break;
+ if (return_addrs[depth] == exception_stack_marker) {
+ struct pt_regs *regs;
+
+ regs = (void *)bp + STACK_FRAME_OVERHEAD;
+ bp = (unsigned long *)bp[0];
+ /* Represent interrupt frame with vector number */
+ return_addr = (void *)regs->trap;
+ if (depth + 1 < max_depth) {
+ depth++;
+ return_addrs[depth] = return_addr;
+ return_addr = (void *)regs->nip;
+ }
+ } else {
+ bp = (unsigned long *)bp[0];
+ return_addr = (void *)bp[2];
+ }
+ }
+
+ walking = 0;
+ return depth;
+}
+
+int backtrace(const void **return_addrs, int max_depth)
+{
+ return backtrace_frame(__builtin_frame_address(0), return_addrs,
+ max_depth);
+}
diff --git a/powerpc/Makefile.ppc64 b/powerpc/Makefile.ppc64
index b0ed2b104..eb682c226 100644
--- a/powerpc/Makefile.ppc64
+++ b/powerpc/Makefile.ppc64
@@ -17,6 +17,7 @@ cstart.o = $(TEST_DIR)/cstart64.o
reloc.o = $(TEST_DIR)/reloc64.o
OBJDIRS += lib/ppc64
+cflatobjs += lib/ppc64/stack.o
# ppc64 specific tests
tests = $(TEST_DIR)/spapr_vpa.elf
diff --git a/powerpc/cstart64.S b/powerpc/cstart64.S
index 14ab0c6c8..278af84a6 100644
--- a/powerpc/cstart64.S
+++ b/powerpc/cstart64.S
@@ -188,6 +188,7 @@ call_handler:
.endr
mfsprg1 r0
std r0,GPR1(r1)
+ std r0,0(r1)
/* lr, xer, ccr */
@@ -206,12 +207,12 @@ call_handler:
subir31, r31, 0b - start_text
ld r2, (p_toc_text - start_text)(r31)
- /* FIXME: build stack frame */
-
/* call generic handler */
addir3,r1,STACK_FRAME_OVERHEAD
bl do_handle_exception
+ .global exception_stack_marker
+exception_stack_marker:
/* restore context */
@@ -321,6 +322,7 @@ handler_trampoline:
/* nip and msr */
mfsrr0 r0
std r0, _NIP(r1)
+ std r0, INT_FRAME_SIZE+16(r1)
mfsrr1 r0
std r0, _MSR(r1)
@@ -337,6 +339,7 @@ handler_htrampoline:
/* nip and msr */
mfspr r0, SPR_HSRR0
std r0, _NIP(r1)
+ std r0, INT_FRAME_SIZE+16(r1)
mfspr r0, SPR_HSRR1
std r0, _MSR(r1)
--
2.42.0
