tVarious tweaks to make things run on Mac OS. The main change is the use of pthread to implement ffork. - plan9port - [fork] Plan 9 from user space
HTML git clone git://src.adamsgaard.dk/plan9port
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---
DIR commit a995e477ffb4dd1184da87e9e46a9e57f3178c63
DIR parent e182749a982e415fba755bc1035c35da5c4fe606
HTML Author: rsc <devnull@localhost>
Date: Wed, 1 Oct 2003 02:50:57 +0000
Various tweaks to make things run on Mac OS.
The main change is the use of pthread to implement ffork.
Diffstat:
M include/lib9.h | 8 +++++++-
M src/cmd/sam/unix.c | 36 +++++++++++++++++++++++++++++++
M src/lib9/Makefile | 4 ++--
M src/lib9/argv0.c | 5 +++++
M src/lib9/await.c | 1 +
M src/lib9/ffork-FreeBSD.c | 6 ++++++
M src/lib9/ffork-Linux.c | 6 ++++++
M src/lib9/lock.c | 7 ++-----
M src/lib9/sysfatal.c | 1 +
M src/libthread/getpid.c | 5 ++---
M src/libthread/label.h | 15 +++++++++++++++
M src/libthread/trend.c | 2 +-
12 files changed, 84 insertions(+), 12 deletions(-)
---
DIR diff --git a/include/lib9.h b/include/lib9.h
t@@ -46,6 +46,11 @@ extern "C" {
# undef _NEEDUINT
# endif
#endif
+#if defined(__APPLE__)
+# include <sys/types.h>
+# undef _NEEDUSHORT
+# undef _NEEDUINT
+#endif
typedef signed char schar;
typedef unsigned int u32int;
t@@ -213,7 +218,8 @@ extern int errstr(char*, uint);
/* command line */
extern char *argv0;
-#define ARGBEGIN for((argv0||(argv0=*argv)),argv++,argc--;\
+extern void __fixargv0(void);
+#define ARGBEGIN for((argv0||(argv0=(__fixargv0(),*argv))),argv++,argc--;\
argv[0] && argv[0][0]=='-' && argv[0][1];\
argc--, argv++) {\
char *_args, *_argt;\
DIR diff --git a/src/cmd/sam/unix.c b/src/cmd/sam/unix.c
t@@ -270,3 +270,39 @@ int create(char *name, int omode, int perm)
return fd;
}
+
+/* SHOULD BE ELSEWHERE */
+#ifdef __APPLE__
+#include <lib9.h>
+
+Lock plk;
+
+ulong
+pread(int fd, void *buf, ulong n, ulong off)
+{
+ ulong rv;
+
+ lock(&plk);
+ if (lseek(fd, off, 0) != off)
+ return -1;
+ rv = read(fd, buf, n);
+ unlock(&plk);
+
+ return rv;
+}
+
+ulong
+pwrite(int fd, void *buf, ulong n, ulong off)
+{
+ ulong rv;
+
+ lock(&plk);
+ if (lseek(fd, off, 0) != off)
+ return -1;
+ rv = write(fd, buf, n);
+ unlock(&plk);
+
+ return rv;
+}
+#endif
+
DIR diff --git a/src/lib9/Makefile b/src/lib9/Makefile
t@@ -19,7 +19,7 @@ OFILES=\
nrand.$O\
qlock.$O\
readn.$O\
- rendez.$O\
+ rendez-$(SYSNAME).$O\
strecpy.$O\
sysfatal.$O\
tas-$(OBJTYPE).$O\
t@@ -31,7 +31,7 @@ OFILES=\
werrstr.$O\
HFILES=\
- lib9.h\
+ $(9SRC)/include/lib9.h\
include $(9SRC)/Makesyslib
DIR diff --git a/src/lib9/argv0.c b/src/lib9/argv0.c
t@@ -2,3 +2,8 @@
char *argv0;
+/*
+ * Mac OS can't deal with files that only declare data.
+ * ARGBEGIN mentions this function so that this file gets pulled in.
+ */
+void __fixargv0(void) { }
DIR diff --git a/src/lib9/await.c b/src/lib9/await.c
t@@ -1,5 +1,6 @@
#include <signal.h>
#include <sys/types.h>
+#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <sys/time.h>
DIR diff --git a/src/lib9/ffork-FreeBSD.c b/src/lib9/ffork-FreeBSD.c
t@@ -31,3 +31,9 @@ _spinlock(spinlock_t *lk)
lock((Lock*)&lk->access_lock);
}
+int
+getfforkid(void)
+{
+ return getpid();
+}
+
DIR diff --git a/src/lib9/ffork-Linux.c b/src/lib9/ffork-Linux.c
t@@ -37,3 +37,9 @@ ffork(int flags, void (*fn)(void*), void *arg)
return pid;
}
+int
+getfforkid(void)
+{
+ return getpid();
+}
+
DIR diff --git a/src/lib9/lock.c b/src/lib9/lock.c
t@@ -8,12 +8,9 @@ _xtas(void *v)
{
int x;
-_ntas++;
+ _ntas++;
x = _tas(v);
- if(x == 0 || x == 0xCAFEBABE)
- return x;
- fprint(2, "%d: tas %p got %ux\n", getpid(), v, x);
- abort();
+ return x;
}
int
DIR diff --git a/src/lib9/sysfatal.c b/src/lib9/sysfatal.c
t@@ -14,6 +14,7 @@ sysfatal(char *fmt, ...)
vseprint(buf, buf+sizeof buf, fmt, arg);
va_end(arg);
+ __fixargv0();
fprint(2, "%s; %s\n", argv0 ? argv0 : "<prog>", buf);
exits("fatal");
}
DIR diff --git a/src/libthread/getpid.c b/src/libthread/getpid.c
t@@ -1,8 +1,7 @@
#include "threadimpl.h"
-#include <unistd.h>
-
+extern int getfforkid(void);
int
_threadgetpid(void)
{
- return getpid();
+ return getfforkid();
}
DIR diff --git a/src/libthread/label.h b/src/libthread/label.h
t@@ -17,6 +17,21 @@ struct Label
ulong si;
ulong di;
};
+#elif defined(__APPLE__)
+struct Label
+{
+ ulong pc; /* lr */
+ ulong cr; /* mfcr */
+ ulong ctr; /* mfcr */
+ ulong xer; /* mfcr */
+ ulong sp; /* callee saved: r1 */
+ ulong toc; /* callee saved: r2 */
+ ulong gpr[19]; /* callee saved: r13-r31 */
+// XXX: currently do not save vector registers or floating-point state
+// ulong pad;
+// uvlong fpr[18]; /* callee saved: f14-f31 */
+// ulong vr[4*12]; /* callee saved: v20-v31, 256-bits each */
+};
#else
#error "Unknown or unsupported architecture"
#endif
DIR diff --git a/src/libthread/trend.c b/src/libthread/trend.c
t@@ -25,7 +25,7 @@ threadmain(int argc, char **argv)
c[1] = chancreate(sizeof(ulong), 1);
c[2] = c[0];
- threadcreate(pingpong, c, 16384);
+ proccreate(pingpong, c, 16384);
threadcreate(pingpong, c+1, 16384);
sendul(c[0], atoi(argv[1]));
}