Merge tag 'linux-user-for-7.0-pull-request' of https://gitlab.com/laurent_vivier/qemu into staging

linux-user pull request 20220106

update netlink entries
nios2 fixes
/proc/self/maps fixes
set/getscheduler update
prctl cleanup and fixes
target_signal.h cleanup
and some trivial fixes

# gpg: Signature made Thu 06 Jan 2022 02:41:07 AM PST
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [undefined]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [undefined]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [undefined]
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# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* tag 'linux-user-for-7.0-pull-request' of https://gitlab.com/laurent_vivier/qemu: (27 commits)
  linux-user: netlink: update IFLA_BRPORT entries
  linux-user: netlink: Add IFLA_VFINFO_LIST
  linux-user: netlink: update IFLA entries
  linux-user/syscall.c: malloc to g_try_malloc
  linux-user/nios2: Use set_sigmask in do_rt_sigreturn
  linux-user/nios2: Fix sigmask in setup_rt_frame
  linux-user/nios2: Fix EA vs PC confusion
  linux-user/nios2: Map a real kuser page
  linux-user/elfload: Rename ARM_COMMPAGE to HI_COMMPAGE
  linux-user/nios2: Fixes for signal frame setup
  linux-user/nios2: Properly emulate EXCP_TRAP
  linux-user/syscall.c: fix missed flag for shared memory in open_self_maps
  linux-user: call set/getscheduler set/getparam directly
  linux-user: add sched_getattr support
  linux-user/signal: Map exit signals in SIGCHLD siginfo_t
  target/sh4: Implement prctl_unalign_sigbus
  target/hppa: Implement prctl_unalign_sigbus
  target/alpha: Implement prctl_unalign_sigbus
  linux-user: Add code for PR_GET/SET_UNALIGN
  linux-user: Disable more prctl subcodes
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/linux-user/generic/signal.h b/linux-user/generic/signal.h
index 943bc1a1e2..6fd05b77bb 100644
--- a/linux-user/generic/signal.h
+++ b/linux-user/generic/signal.h
@@ -55,6 +55,21 @@
 #define TARGET_SIG_UNBLOCK        1    /* for unblocking signals */
 #define TARGET_SIG_SETMASK        2    /* for setting the signal mask */
 
+/* this struct defines a stack used during syscall handling */
+typedef struct target_sigaltstack {
+    abi_ulong ss_sp;
+    abi_int ss_flags;
+    abi_ulong ss_size;
+} target_stack_t;
+
+/*
+ * sigaltstack controls
+ */
+#define TARGET_SS_ONSTACK 1
+#define TARGET_SS_DISABLE 2
+
+#define TARGET_MINSIGSTKSZ     2048
+
 /* bit-flags */
 #define TARGET_SS_AUTODISARM (1U << 31) /* disable sas during sighandling */
 /* mask for all SS_xxx flags */