linux-user/hppa: Force all code addresses to PRIV_USER

The kernel does this along the return path to user mode.

Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <richard.h

linux-user/hppa: Force all code addresses to PRIV_USER

The kernel does this along the return path to user mode.

Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

linux-user: Move tswap_siginfo out of target code

Move tswap_siginfo from target code to handle_pending_signal. This will
allow some cleanups and having the siginfo ready to be used in gdbstub.

Sig

linux-user: Move tswap_siginfo out of target code

Move tswap_siginfo from target code to handle_pending_signal. This will
allow some cleanups and having the siginfo ready to be used in gdbstub.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240309030901.1726211-3-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

show more ...

linux-user: Move tswap_siginfo out of target code

Move tswap_siginfo from target code to handle_pending_signal. This will
allow some cleanups and having the siginfo ready to be used in gdbstub.

Sig

linux-user: Move tswap_siginfo out of target code

Move tswap_siginfo from target code to handle_pending_signal. This will
allow some cleanups and having the siginfo ready to be used in gdbstub.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240309030901.1726211-3-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

show more ...

linux-user: Move tswap_siginfo out of target code

Move tswap_siginfo from target code to handle_pending_signal. This will
allow some cleanups and having the siginfo ready to be used in gdbstub.

Sig

linux-user: Move tswap_siginfo out of target code

Move tswap_siginfo from target code to handle_pending_signal. This will
allow some cleanups and having the siginfo ready to be used in gdbstub.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240309030901.1726211-3-gustavo.romero@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

show more ...

{linux,bsd}-user: Introduce get_task_state()

A CPU's TaskState is stored in the CPUState's void *opaque field,
accessing which is somewhat awkward due to having to use a cast.
Introduce a wrapper an

{linux,bsd}-user: Introduce get_task_state()

A CPU's TaskState is stored in the CPUState's void *opaque field,
accessing which is somewhat awkward due to having to use a cast.
Introduce a wrapper and use it everywhere.

Suggested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240219141628.246823-3-iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-4-alex.bennee@linaro.org>

show more ...

linux-user/hppa: Fixes for TARGET_ABI32

Avoid target_ulong and use abi_* types.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.or

linux-user/hppa: Fixes for TARGET_ABI32

Avoid target_ulong and use abi_* types.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

linux-user/hppa: Add vdso

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

linux-user/hppa: Fix struct target_sigcontext layout

Use abi_ullong not uint64_t so that the alignment of the field
and therefore the layout of the struct is correct.

Reviewed-by: Philippe Mathieu-

linux-user/hppa: Fix struct target_sigcontext layout

Use abi_ullong not uint64_t so that the alignment of the field
and therefore the layout of the struct is correct.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

linux-user/hppa: Fix struct target_sigcontext layout

Use abi_ullong not uint64_t so that the alignment of the field
and therefore the layout of the struct is correct.

Reviewed-by: Philippe Mathieu-

linux-user/hppa: Fix struct target_sigcontext layout

Use abi_ullong not uint64_t so that the alignment of the field
and therefore the layout of the struct is correct.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

linux-user/hppa: Fix struct target_sigcontext layout

Use abi_ullong not uint64_t so that the alignment of the field
and therefore the layout of the struct is correct.

Reviewed-by: Philippe Mathieu-

linux-user/hppa: Fix struct target_sigcontext layout

Use abi_ullong not uint64_t so that the alignment of the field
and therefore the layout of the struct is correct.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mp

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O2 signal.c"
and run it with "qemu-hppa -one-insn-per-tb a.out". It reports that the
address of the flag is 0xb4 and it crashes when attempting to touch it.

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.h>

sig_atomic_t flag;

void sig(int n)
{
printf("&flag: %p\n", &flag);
flag = 1;
}

int main(void)
{
struct sigaction sa;
struct itimerval it;

sa.sa_handler = sig;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGALRM, &sa, NULL)) perror("sigaction"), exit(1);

it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = 100;
it.it_value.tv_sec = it.it_interval.tv_sec;
it.it_value.tv_usec = it.it_interval.tv_usec;

if (setitimer(ITIMER_REAL, &it, NULL)) perror("setitimer"), exit(1);

while (1) {
}
}

The reason for the crash is that the signal handling routine doesn't clear
the 'N' flag in the PSW. If the signal interrupts a thread when the 'N'
flag is set, the flag remains set at the beginning of the signal handler
and the first instruction of the signal handler is skipped.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mp

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O2 signal.c"
and run it with "qemu-hppa -one-insn-per-tb a.out". It reports that the
address of the flag is 0xb4 and it crashes when attempting to touch it.

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.h>

sig_atomic_t flag;

void sig(int n)
{
printf("&flag: %p\n", &flag);
flag = 1;
}

int main(void)
{
struct sigaction sa;
struct itimerval it;

sa.sa_handler = sig;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGALRM, &sa, NULL)) perror("sigaction"), exit(1);

it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = 100;
it.it_value.tv_sec = it.it_interval.tv_sec;
it.it_value.tv_usec = it.it_interval.tv_usec;

if (setitimer(ITIMER_REAL, &it, NULL)) perror("setitimer"), exit(1);

while (1) {
}
}

The reason for the crash is that the signal handling routine doesn't clear
the 'N' flag in the PSW. If the signal interrupts a thread when the 'N'
flag is set, the flag remains set at the beginning of the signal handler
and the first instruction of the signal handler is skipped.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mp

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O2 signal.c"
and run it with "qemu-hppa -one-insn-per-tb a.out". It reports that the
address of the flag is 0xb4 and it crashes when attempting to touch it.

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.h>

sig_atomic_t flag;

void sig(int n)
{
printf("&flag: %p\n", &flag);
flag = 1;
}

int main(void)
{
struct sigaction sa;
struct itimerval it;

sa.sa_handler = sig;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGALRM, &sa, NULL)) perror("sigaction"), exit(1);

it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = 100;
it.it_value.tv_sec = it.it_interval.tv_sec;
it.it_value.tv_usec = it.it_interval.tv_usec;

if (setitimer(ITIMER_REAL, &it, NULL)) perror("setitimer"), exit(1);

while (1) {
}
}

The reason for the crash is that the signal handling routine doesn't clear
the 'N' flag in the PSW. If the signal interrupts a thread when the 'N'
flag is set, the flag remains set at the beginning of the signal handler
and the first instruction of the signal handler is skipped.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mp

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O2 signal.c"
and run it with "qemu-hppa -one-insn-per-tb a.out". It reports that the
address of the flag is 0xb4 and it crashes when attempting to touch it.

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.h>

sig_atomic_t flag;

void sig(int n)
{
printf("&flag: %p\n", &flag);
flag = 1;
}

int main(void)
{
struct sigaction sa;
struct itimerval it;

sa.sa_handler = sig;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGALRM, &sa, NULL)) perror("sigaction"), exit(1);

it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = 100;
it.it_value.tv_sec = it.it_interval.tv_sec;
it.it_value.tv_usec = it.it_interval.tv_usec;

if (setitimer(ITIMER_REAL, &it, NULL)) perror("setitimer"), exit(1);

while (1) {
}
}

The reason for the crash is that the signal handling routine doesn't clear
the 'N' flag in the PSW. If the signal interrupts a thread when the 'N'
flag is set, the flag remains set at the beginning of the signal handler
and the first instruction of the signal handler is skipped.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mp

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O2 signal.c"
and run it with "qemu-hppa -one-insn-per-tb a.out". It reports that the
address of the flag is 0xb4 and it crashes when attempting to touch it.

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.h>

sig_atomic_t flag;

void sig(int n)
{
printf("&flag: %p\n", &flag);
flag = 1;
}

int main(void)
{
struct sigaction sa;
struct itimerval it;

sa.sa_handler = sig;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGALRM, &sa, NULL)) perror("sigaction"), exit(1);

it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = 100;
it.it_value.tv_sec = it.it_interval.tv_sec;
it.it_value.tv_usec = it.it_interval.tv_usec;

if (setitimer(ITIMER_REAL, &it, NULL)) perror("setitimer"), exit(1);

while (1) {
}
}

The reason for the crash is that the signal handling routine doesn't clear
the 'N' flag in the PSW. If the signal interrupts a thread when the 'N'
flag is set, the flag remains set at the beginning of the signal handler
and the first instruction of the signal handler is skipped.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mp

linux-user/hppa: lock both words of function descriptor

The code in setup_rt_frame reads two words at haddr, but locks only one.
This patch fixes it to lock both.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O

linux-user/hppa: clear the PSW 'N' bit when delivering signals

qemu-hppa may crash when delivering a signal. It can be demonstrated with
this program. Compile the program with "hppa-linux-gnu-gcc -O2 signal.c"
and run it with "qemu-hppa -one-insn-per-tb a.out". It reports that the
address of the flag is 0xb4 and it crashes when attempting to touch it.

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.h>

sig_atomic_t flag;

void sig(int n)
{
printf("&flag: %p\n", &flag);
flag = 1;
}

int main(void)
{
struct sigaction sa;
struct itimerval it;

sa.sa_handler = sig;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGALRM, &sa, NULL)) perror("sigaction"), exit(1);

it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = 100;
it.it_value.tv_sec = it.it_interval.tv_sec;
it.it_value.tv_usec = it.it_interval.tv_usec;

if (setitimer(ITIMER_REAL, &it, NULL)) perror("setitimer"), exit(1);

while (1) {
}
}

The reason for the crash is that the signal handling routine doesn't clear
the 'N' flag in the PSW. If the signal interrupts a thread when the 'N'
flag is set, the flag remains set at the beginning of the signal handler
and the first instruction of the signal handler is skipped.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: qemu-stable@nongnu.org
Signed-off-by: Helge Deller <deller@gmx.de>

show more ...

linux-user/hppa: Fix setup_sigcontext()

We don't emulate a preemptive kernel on this level, and the hppa architecture
doesn't allow context switches on the gateway page. So we always have to return

linux-user/hppa: Fix setup_sigcontext()

We don't emulate a preemptive kernel on this level, and the hppa architecture
doesn't allow context switches on the gateway page. So we always have to return
to sc_iaoq[] and not to gr[31].
This fixes the remaining random segfaults which still occured.

Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20220924114501.21767-8-deller@gmx.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

show more ...

linux-user/hppa: Add signal trampoline for hppa target

In Linux kernel v5.18 the vDSO for signal trampoline was added.
This code mimiks the bare minimum of this vDSO and thus avoids that the
parisc

linux-user/hppa: Add signal trampoline for hppa target

In Linux kernel v5.18 the vDSO for signal trampoline was added.
This code mimiks the bare minimum of this vDSO and thus avoids that the
parisc emulation needs executable stacks.

Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20220924114501.21767-4-deller@gmx.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

show more ...

linux-user/hppa: Fix setup_sigcontext()

We don't emulate a preemptive kernel on this level, and the hppa architecture
doesn't allow context switches on the gateway page. So we always have to return

linux-user/hppa: Fix setup_sigcontext()

We don't emulate a preemptive kernel on this level, and the hppa architecture
doesn't allow context switches on the gateway page. So we always have to return
to sc_iaoq[] and not to gr[31].
This fixes the remaining random segfaults which still occured.

Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20220924114501.21767-8-deller@gmx.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

show more ...