Richard Henderson wrote:
>Create and record the two signal trampolines.
>Use them when the guest does not use SA_RESTORER.
This patch caused a regression when running the wasmtime CI under qemu:
https://github.com/bytecodealliance/wasmtime/pull/4076
The problem is that this part:
>diff --git a
he man page
above indicates), so this looks OK to me.
Bye,
Ulrich
--
Dr. Ulrich Weigand
GNU/Linux compilers and toolchain
ulrich.weig...@de.ibm.com
e
> > cracks.
> >
>
> If from the S390x point of view they are correct, I can collect them via
> linux-user.
It's certainly correct that SIGILL, SIGFPE and SIGTRAP are delivered with
psw.addr
pointing *after* the faulting instruction, that forms in effect part of the
kernel
ABI on s390x. We're planning to document this in the next revision of the ABI
document, see here: https://github.com/IBM/s390x-abi/issues/2
I can also confirm that this patch fixes the problems I was seeing when running
the s390x wasmtime JIT under qemu.
Bye,
Ulrich
--
Dr. Ulrich Weigand
GNU/Linux compilers and toolchain
ulrich.weig...@de.ibm.com
sult directly
in the helper. (It cannot be re-computed later as the information
about the invalid exception is no longer available.)
This fixes a bug observed when running the wasmtime test suite
under the s390x-linux-user target.
Signed-off-by: Ulrich Weigand
---
target/s39
On Mon, Jun 28, 2021 at 11:45:27AM -0700, Richard Henderson wrote:
> On 6/28/21 9:35 AM, Ulrich Weigand wrote:
> >@@ -506,6 +534,7 @@ uint64_t HELPER(cgeb)(CPUS390XState *env, uint64_t v2,
> >uint32_t m34)
> > {
> > int old_mode = s390_swap_bfp_rounding_m
On Mon, Jun 28, 2021 at 10:49:52AM -0700, Richard Henderson wrote:
> On 6/28/21 9:32 AM, Ulrich Weigand wrote:
> >>Don't clear out env->fpu_status.float_exception_flags in
> >>handle_exceptions. Wait until we're actually done with the data.
> >
> >
sult directly
in the helper. (It cannot be re-computed later as the information
about the invalid exception is no longer available.)
This fixes a bug observed when running the wasmtime test suite
under the s390x-linux-user target.
Signed-off-by: Ulrich Weigand
---
target/s39
On Mon, Jun 28, 2021 at 06:26:52AM -0700, Richard Henderson wrote:
> On 6/28/21 5:58 AM, Ulrich Weigand wrote:
> >>>helper.h:DEF_HELPER_FLAGS_3(clgdb, TCG_CALL_NO_WG, i64, env, i64, i32)
> >>
> >>This won't work reliably. You're writing to a tcg global
On Fri, Jun 25, 2021 at 06:19:48PM -0700, Richard Henderson wrote:
> On 6/23/21 7:50 AM, Ulrich Weigand wrote:
> >@@ -506,6 +534,7 @@ uint64_t HELPER(cgeb)(CPUS390XState *env, uint64_t v2,
> >uint32_t m34)
> > {
> > int old_mode = s390_swap_bfp_rounding_m
sult directly
in the helper. (It cannot be re-computed later as the information
about the invalid exception is no longer available.)
This fixes a bug observed when running the wasmtime test suite
under the s390x-linux-user target.
Signed-off-by: Ulrich Weigand
---
target/s39
Doug Kwan (關振德) wrote on 08.05.2014 10:43:14:
On Thu, May 8, 2014 at 1:36 AM, Alexander Graf wrote:
>> - _regs->gpr[2] = ldq_raw(infop->entry + 8) + infop->load_bias;
>> - infop->entry = ldq_raw(infop->entry) + infop->load_bias;
>> + if (get_ppc64_abi(infop) < 2) {
>> + _regs->gpr[
Richard Henderson wrote on 01.05.2014 17:44:21:
> Please review, and if you've got an ELFv2 system (nudge nudge), please
> give it a try and make sure it works.
I ran into illegal instructions due to this patch:
> tcg-ppc64: Support mulsh_i32
[snip]
> case INDEX_op_muluh_i32:
> tc
function prologue sequences.
Signed-off-by: Ulrich Weigand
---
tcg/ppc64/tcg-target.c | 18 +-
1 files changed, 17 insertions(+), 1 deletions(-)
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index 06e440f..4ef4838 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg
Richard Henderson wrote on 22.04.2014 19:53:18:
> On 04/22/2014 09:20 AM, Ulrich Weigand wrote:
> > +#elif _CALL_ELF == 2
> > +/* In the ELFv2 ABI, we do not need to set up the TOC pointer in
r2,
> > + but instead we have to set up r12 to contain the destination
add
Alexander Graf wrote on 14.01.2014 23:40:20:
> On 14.01.2014, at 23:06, Thomas Falcon
wrote:
>
> > This patch allows registers to be properly read from and written to
> > when using the gdbstub to debug a ppc guest running in little
> > endian mode. It accomplishes this goal by byte swapping the
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