Merge tag 'bsd-user-mmap-pull-request' of https://gitlab.com/bsdimp/qemu into staging

bsd-user mmap and exec branches from gsoc

This pull request represents the mmap and exec changes from Karim Taha
for his GSoC project.

They represent all the mmap and exec related system calls and get bsd-user to
the point that a dynamic hello-world works (at least for armv7).

There are a couple of patch check errors, but they are the lessor evil: I made
purposely bad style choices to ensure all the commits compiled (and i undid the
style choices in subsequent commits).

I pushed an earlier version to gitlab, and all but the riscv64 pipelines were
green.  Since bsd-user doesn't change anything related to ricsv64 (there's no
support in qemu-project repo, though we do have it in the bsd-user fork: coming
soon).

I think this is good to go.

https://gitlab.com/bsdimp/qemu.git

Warner

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# gpg:                 aka "Warner Losh <imp@bsdimp.com>" [unknown]
# gpg:                 aka "Warner Losh <imp@freebsd.org>" [unknown]
# gpg:                 aka "Warner Losh <imp@village.org>" [unknown]
# gpg:                 aka "Warner Losh <wlosh@bsdimp.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 2035 F894 B00A A3CF 7CCD  E1B7 6C1C D128 7DB0 1100

* tag 'bsd-user-mmap-pull-request' of https://gitlab.com/bsdimp/qemu: (51 commits)
  bsd-user: Add stubs for vadvise(), sbrk() and sstk()
  bsd-user: Implement shmat(2) and shmdt(2)
  bsd-user: Implement shmctl(2)
  bsd-user: Implement shm_unlink(2) and shmget(2)
  bsd-user: Implement shm_open(2)
  bsd-user: Implement do_obreak function
  bsd-user: Implement mincore(2)
  bsd-user: Implment madvise(2) to match the linux-user implementation.
  bsd-user: Implement mlock(2), munlock(2), mlockall(2), munlockall(2), minherit(2)
  bsd-user: Implement msync(2)
  bsd-user: Implement mprotect(2)
  bsd-user: Implement mmap(2) and munmap(2)
  bsd-user: Introduce bsd-mem.h to the source tree
  bsd-user: Implement shmid_ds conversion between host and target.
  bsd-user: Implement ipc_perm conversion between host and target.
  bsd-user: Implement target_set_brk function in bsd-mem.c instead of os-syscall.c
  bsd-user: Add bsd-mem.c to meson.build
  bsd-user: Implement shm_rename(2) system call
  bsd-user: Implement shm_open2(2) system call
  bsd-user: Introduce freebsd/os-misc.h to the source tree
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 85 insertions, 4 deletions

diff --git a/bsd-user/syscall_defs.h b/bsd-user/syscall_defs.h
index 9c90616baa..52f84d5dd1 100644
--- a/bsd-user/syscall_defs.h
+++ b/bsd-user/syscall_defs.h
@@ -56,8 +56,47 @@ struct target_iovec {
 };
 
 /*
+ * sys/ipc.h
+ */
+struct target_ipc_perm {
+    uint32_t    cuid;       /* creator user id */
+    uint32_t    cgid;       /* creator group id */
+    uint32_t    uid;        /* user id */
+    uint32_t    gid;        /* group id */
+    uint16_t    mode;       /* r/w permission */
+    uint16_t    seq;        /* sequence # */
+    abi_long    key;        /* user specified msg/sem/shm key */
+};
+
+#define TARGET_IPC_RMID 0   /* remove identifier */
+#define TARGET_IPC_SET  1   /* set options */
+#define TARGET_IPC_STAT 2   /* get options */
+
+/*
+ * sys/shm.h
+ */
+struct target_shmid_ds {
+    struct  target_ipc_perm shm_perm; /* peration permission structure */
+    abi_ulong   shm_segsz;  /* size of segment in bytes */
+    int32_t     shm_lpid;   /* process ID of last shared memory op */
+    int32_t     shm_cpid;   /* process ID of creator */
+    int32_t     shm_nattch; /* number of current attaches */
+    target_time_t shm_atime;  /* time of last shmat() */
+    target_time_t shm_dtime;  /* time of last shmdt() */
+    target_time_t shm_ctime;  /* time of last change by shmctl() */
+};
+
+#define N_BSD_SHM_REGIONS   32
+struct bsd_shm_regions {
+    abi_long start;
+    abi_long size;
+};
+
+/*
  *  sys/mman.h
  */
+#define TARGET_MADV_DONTNEED            4       /* dont need these pages */
+
 #define TARGET_FREEBSD_MAP_RESERVED0080 0x0080  /* previously misimplemented */
                                                 /* MAP_INHERIT */
 #define TARGET_FREEBSD_MAP_RESERVED0100 0x0100  /* previously unimplemented */
@@ -130,11 +169,7 @@ struct target_freebsd_timeval {
 /*
  *  sys/resource.h
  */
-#if defined(__FreeBSD__)
 #define TARGET_RLIM_INFINITY    RLIM_INFINITY
-#else
-#define TARGET_RLIM_INFINITY    ((abi_ulong)-1)
-#endif
 
 #define TARGET_RLIMIT_CPU       0
 #define TARGET_RLIMIT_FSIZE     1
@@ -390,6 +425,52 @@ struct target_freebsd_flock {
     int32_t l_sysid;
 } QEMU_PACKED;
 
+/* sys/unistd.h */
+/* user: vfork(2) semantics, clear signals */
+#define TARGET_RFSPAWN (1U << 31)
+
+/*
+ * from sys/procctl.h
+ */
+#define TARGET_PROC_SPROTECT            1
+#define TARGET_PROC_REAP_ACQUIRE        2
+#define TARGET_PROC_REAP_RELEASE        3
+#define TARGET_PROC_REAP_STATUS         4
+#define TARGET_PROC_REAP_GETPIDS        5
+#define TARGET_PROC_REAP_KILL           6
+
+struct target_procctl_reaper_status {
+    uint32_t rs_flags;
+    uint32_t rs_children;
+    uint32_t rs_descendants;
+    uint32_t rs_reaper;
+    uint32_t rs_pid;
+    uint32_t rs_pad0[15];
+};
+
+struct target_procctl_reaper_pidinfo {
+    uint32_t pi_pid;
+    uint32_t pi_subtree;
+    uint32_t pi_flags;
+    uint32_t pi_pad0[15];
+};
+
+struct target_procctl_reaper_pids {
+    uint32_t rp_count;
+    uint32_t rp_pad0[15];
+    abi_ulong rp_pids;
+};
+
+struct target_procctl_reaper_kill {
+    int32_t  rk_sig;
+    uint32_t rk_flags;
+    uint32_t rk_subtree;
+    uint32_t rk_killed;
+    uint32_t rk_fpid;
+    uint32_t rk_pad0[15];
+};
+
+
 #define safe_syscall0(type, name) \
 type safe_##name(void) \
 { \