Gustavo Romero <gustavo.rom...@linaro.org> writes:
> Hi Alex,
>
> On 3/7/24 7:33 PM, Alex Bennée wrote:
>> Richard Henderson <richard.hender...@linaro.org> writes:
>>
>>> On 3/7/24 08:26, Gustavo Romero wrote:
>>>> Save target's siginfo into gdbserver_state so it can be used later, for
>>>> example, in any stub that requires the target's si_signo and si_code.
>>>> This change affects only linux-user mode.
>>>> Signed-off-by: Gustavo Romero <gustavo.rom...@linaro.org>
>>>> Suggested-by: Richard Henderson <richard.hender...@linaro.org>
>>>> ---
>>>> gdbstub/internals.h | 3 +++
>>>> gdbstub/user-target.c | 3 ++-
>>>> gdbstub/user.c | 14 ++++++++++----
>>>> include/gdbstub/user.h | 6 +++++-
>>>> linux-user/main.c | 2 +-
>>>> linux-user/signal.c | 5 ++++-
>>>> 6 files changed, 25 insertions(+), 8 deletions(-)
>>>> diff --git a/gdbstub/internals.h b/gdbstub/internals.h
>>>> index 56b7c13b75..a7cc69dab3 100644
>>>> --- a/gdbstub/internals.h
>>>> +++ b/gdbstub/internals.h
>>>> @@ -58,6 +58,9 @@ typedef struct GDBState {
>>>> int line_csum; /* checksum at the end of the packet */
>>>> GByteArray *last_packet;
>>>> int signal;
>>>> +#ifdef CONFIG_USER_ONLY
>>>> + uint8_t siginfo[MAX_SIGINFO_LENGTH];
>>>> +#endif
>>>
>>> If we this in GDBUserState in user.c -- no need for ifdefs then.
>> Although it does break on FreeBSD's user target:
>> FAILED: libqemu-arm-bsd-user.fa.p/gdbstub_user-target.c.o
>> cc -m64 -mcx16 -Ilibqemu-arm-bsd-user.fa.p -I. -I.. -Itarget/arm
>> -I../target/arm -I../common-user/host/x86_64 -I../bsd-user/include
>> -Ibsd-user/freebsd -I../bsd-user/freebsd -I../bsd-user/host/x86_64
>> -Ibsd-user -I../bsd-user -I../bsd-user/arm -Iqapi -Itrace -Iui -Iui/shader
>> -I/usr/local/include/capstone -I/usr/local/include/glib-2.0
>> -I/usr/local/lib/glib-2.0/include -I/usr/local/include
>> -fdiagnostics-color=auto -Wall -Winvalid-pch -Werror -std=gnu11 -O2 -g
>> -fstack-protector-strong -Wempty-body -Wendif-labels -Wexpansion-to-defined
>> -Wformat-security -Wformat-y2k -Wignored-qualifiers -Winit-self
>> -Wmissing-format-attribute -Wmissing-prototypes -Wnested-externs
>> -Wold-style-definition -Wredundant-decls -Wstrict-prototypes -Wtype-limits
>> -Wundef -Wvla -Wwrite-strings -Wno-gnu-variable-sized-type-not-at-end
>> -Wno-initializer-overrides -Wno-missing-include-dirs -Wno-psabi
>> -Wno-shift-negative-value -Wno-string-plus-int
>> -Wno-tautological-type-limit-compare -Wno-typedef-redefinition
>> -Wthread-safety -iquote . -iquote /tmp/cirrus-ci-build -iquote
>> /tmp/cirrus-ci-build/include -iquote
>> /tmp/cirrus-ci-build/host/include/x86_64 -iquote
>> /tmp/cirrus-ci-build/host/include/generic -iquote
>> /tmp/cirrus-ci-build/tcg/i386 -pthread -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64
>> -D_LARGEFILE_SOURCE -fno-strict-aliasing -fno-common -fwrapv
>> -ftrivial-auto-var-init=zero -fPIE -DNEED_CPU_H
>> '-DCONFIG_TARGET="arm-bsd-user-config-target.h"'
>> '-DCONFIG_DEVICES="arm-bsd-user-config-devices.h"' -MD -MQ
>> libqemu-arm-bsd-user.fa.p/gdbstub_user-target.c.o -MF
>> libqemu-arm-bsd-user.fa.p/gdbstub_user-target.c.o.d -o
>> libqemu-arm-bsd-user.fa.p/gdbstub_user-target.c.o -c ../gdbstub/user-target.c
>> In file included from ../gdbstub/user-target.c:18:
>> ../gdbstub/internals.h:62:21: error: use of undeclared identifier
>> 'MAX_SIGINFO_LENGTH'
>> 62 | uint8_t siginfo[MAX_SIGINFO_LENGTH];
>> | ^
>> 1 error generated.
>> [2084/6731] Compiling C object libqemu-arm
>> See: https://gitlab.com/stsquad/qemu/-/jobs/6345829419
>
> argh, I've tested all targets for linux-user, but missed bsd-user. I've tried
> once to build it but that requires a BSD-like host, which I don't have at the
> moment, then I forgot about it... Let me setup one and review the change in
> the light of the comments from you and Richard.
make vm-build-[open|net|free]bsd
see make vm-help for details.
>
> Thanks!
>
>
> Cheers,
> Gustavo
--
Alex Bennée
Virtualisation Tech Lead @ Linaro
