qemu/linux-user/microblaze
Timothy E Baldwin 4134ecfeb9 linux-user: Support for restarting system calls for Microblaze targets
Update the Microblaze main loop and sigreturn code:
 * on TARGET_ERESTARTSYS, wind guest PC backwards to repeat syscall insn
 * set all guest CPU state within signal.c code on sigreturn
 * handle TARGET_QEMU_ESIGRETURN in the main loop as the indication
   that the main loop should not touch any guest CPU state

Note that this in passing fixes a bug where we were corrupting
the guest r[3] on sigreturn with the guest's r[10] because
do_sigreturn() was returning env->regs[10] but the register for
syscall return values is env->regs[3].

Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk>
Message-id: 1441497448-32489-11-git-send-email-T.E.Baldwin99@members.leeds.ac.uk
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: Commit message tweaks; drop TARGET_USE_ERESTARTSYS define;
 drop whitespace changes]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-05-27 14:49:51 +03:00
..
syscall_nr.h linux-user: sync syscall numbers with kernel 2016-02-23 21:25:10 +02:00
target_cpu.h linux-user: Move cpu_clone_regs() and cpu_set_tls() into linux-user 2013-07-09 21:20:28 +02:00
target_signal.h linux-user: Support for restarting system calls for Microblaze targets 2016-05-27 14:49:51 +03:00
target_structs.h linux-user: create target_structs header to place ipc_perm and shmid_ds 2013-11-29 11:42:04 +02:00
target_syscall.h build: [linux-user] Rename "syscall.h" to "target_syscall.h" in target directories 2016-02-23 21:25:09 +02:00
termbits.h