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authorMike Frysinger <vapier@gentoo.org>2021-06-20 12:38:27 -0400
committerMike Frysinger <vapier@gentoo.org>2021-06-22 19:36:28 -0400
commitc45cffdbe1a1b816fd9a88f88bb83bd7078a1e4e (patch)
treece8e3f7618908cb5d1c0472b0923a91442640b92
parente173c80fbb01dfed80a1b628157de3c0040d774b (diff)
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sim: callback: add a getpid interface
Rather than hit the OS interface directly, use the existing callback layer so the instantiator can decide behavior.
-rw-r--r--include/sim/ChangeLog4
-rw-r--r--include/sim/callback.h1
-rw-r--r--sim/common/ChangeLog6
-rw-r--r--sim/common/callback.c13
-rw-r--r--sim/common/syscall.c3
5 files changed, 26 insertions, 1 deletions
diff --git a/include/sim/ChangeLog b/include/sim/ChangeLog
index 4fe3bc0..b98631b 100644
--- a/include/sim/ChangeLog
+++ b/include/sim/ChangeLog
@@ -1,3 +1,7 @@
+2021-06-22 Mike Frysinger <vapier@gentoo.org>
+
+ * sim/callback.h (struct host_callback_struct): Add getpid.
+
2021-05-14 Mike Frysinger <vapier@gentoo.org>
* sim/callback.h (struct host_callback_struct): Change lseek return and
diff --git a/include/sim/callback.h b/include/sim/callback.h
index 4c162bc..a6c536b 100644
--- a/include/sim/callback.h
+++ b/include/sim/callback.h
@@ -91,6 +91,7 @@ struct host_callback_struct
int (*to_lstat) (host_callback *, const char *, struct stat *);
int (*ftruncate) (host_callback *, int, int64_t);
int (*truncate) (host_callback *, const char *, int64_t);
+ int (*getpid) (host_callback *);
int (*pipe) (host_callback *, int *);
/* Called by the framework when a read call has emptied a pipe buffer. */
diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index bcf9242..5545771 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,5 +1,11 @@
2021-06-22 Mike Frysinger <vapier@gentoo.org>
+ * callback.c (os_getpid): New function.
+ (default_callback): Add os_getpid.
+ * syscall.c (cb_syscall): Change getpid to cb->getpid.
+
+2021-06-22 Mike Frysinger <vapier@gentoo.org>
+
* Make-common.in (VPATH): Use $(srcdir).
(config.status): New variable.
(stamp-hw): Depend on $(config.status).
diff --git a/sim/common/callback.c b/sim/common/callback.c
index f2587a4..071e7b1 100644
--- a/sim/common/callback.c
+++ b/sim/common/callback.c
@@ -557,6 +557,17 @@ os_truncate (host_callback *p, const char *file, int64_t len)
}
static int
+os_getpid (host_callback *p)
+{
+ int result;
+
+ result = getpid ();
+ /* POSIX says getpid always succeeds. */
+ p->last_errno = 0;
+ return result;
+}
+
+static int
os_pipe (host_callback *p, int *filedes)
{
int i;
@@ -737,6 +748,8 @@ host_callback default_callback =
os_ftruncate,
os_truncate,
+ os_getpid,
+
os_pipe,
os_pipe_empty,
os_pipe_nonempty,
diff --git a/sim/common/syscall.c b/sim/common/syscall.c
index 4e76d20..7ef34b9 100644
--- a/sim/common/syscall.c
+++ b/sim/common/syscall.c
@@ -579,7 +579,8 @@ cb_syscall (host_callback *cb, CB_SYSCALL *sc)
break;
case CB_SYS_getpid:
- result = getpid ();
+ /* POSIX says getpid always succeeds. */
+ result = (*cb->getpid) (cb);
break;
case CB_SYS_time :