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-rw-r--r--src/backend/port/Makefile.in14
-rw-r--r--src/backend/port/darwin/Makefile30
-rw-r--r--src/backend/port/darwin/sem.c374
-rw-r--r--src/backend/port/dynloader/darwin.c22
-rw-r--r--src/backend/port/dynloader/darwin.h8
-rw-r--r--src/backend/storage/buffer/s_lock.c31
-rw-r--r--src/backend/storage/ipc/ipc.c13
-rw-r--r--src/backend/storage/ipc/spin.c4
-rw-r--r--src/backend/storage/lmgr/proc.c9
-rw-r--r--src/include/port/darwin.h7
-rw-r--r--src/include/port/darwin/sem.h75
-rw-r--r--src/makefiles/Makefile.darwin1
-rw-r--r--src/template/darwin5
13 files changed, 568 insertions, 25 deletions
diff --git a/src/backend/port/Makefile.in b/src/backend/port/Makefile.in
index 2b3430a05a0..a7c2de98cb0 100644
--- a/src/backend/port/Makefile.in
+++ b/src/backend/port/Makefile.in
@@ -13,7 +13,7 @@
# be converted to Method 2.
#
# IDENTIFICATION
-# $Header: /cvsroot/pgsql/src/backend/port/Attic/Makefile.in,v 1.27 2000/10/20 21:03:45 petere Exp $
+# $Header: /cvsroot/pgsql/src/backend/port/Attic/Makefile.in,v 1.28 2000/12/11 00:49:54 tgl Exp $
#
#-------------------------------------------------------------------------
@@ -30,6 +30,10 @@ endif
ifeq ($(PORTNAME), beos)
OBJS += beos/SUBSYS.o
endif
+ifeq ($(PORTNAME), darwin)
+OBJS += darwin/SUBSYS.o
+endif
+
all: SUBSYS.o
SUBSYS.o: $(OBJS)
@@ -45,11 +49,19 @@ beos/SUBSYS.o: beos.dir
beos.dir:
$(MAKE) -C beos all
+darwin/SUBSYS.o: darwin.dir
+
+darwin.dir:
+ $(MAKE) -C darwin all
+
tas.o: tas.s
$(CC) $(CFLAGS) -c $<
distclean clean:
rm -f SUBSYS.o $(OBJS)
+ $(MAKE) -C beos clean
+ $(MAKE) -C darwin clean
+ $(MAKE) -C qnx4 clean
depend dep:
$(CC) -MM $(CFLAGS) *.c >depend
diff --git a/src/backend/port/darwin/Makefile b/src/backend/port/darwin/Makefile
new file mode 100644
index 00000000000..6696529e510
--- /dev/null
+++ b/src/backend/port/darwin/Makefile
@@ -0,0 +1,30 @@
+#-------------------------------------------------------------------------
+#
+# Makefile--
+# Makefile for port/darwin
+#
+# IDENTIFICATION
+# $Header: /cvsroot/pgsql/src/backend/port/darwin/Makefile,v 1.1 2000/12/11 00:49:54 tgl Exp $
+#
+#-------------------------------------------------------------------------
+
+subdir = src/backend/port/darwin
+top_builddir = ../../../..
+include $(top_builddir)/src/Makefile.global
+
+OBJS = sem.o
+
+all: SUBSYS.o
+
+SUBSYS.o: $(OBJS)
+ $(LD) $(LDREL) $(LDOUT) SUBSYS.o $(OBJS)
+
+depend dep:
+ $(CC) -MM $(CFLAGS) *.c >depend
+
+clean:
+ rm -f SUBSYS.o $(OBJS)
+
+ifeq (depend,$(wildcard depend))
+include depend
+endif
diff --git a/src/backend/port/darwin/sem.c b/src/backend/port/darwin/sem.c
new file mode 100644
index 00000000000..c55090cedc2
--- /dev/null
+++ b/src/backend/port/darwin/sem.c
@@ -0,0 +1,374 @@
+/*-------------------------------------------------------------------------
+ *
+ * sem.c
+ * System V Semaphore Emulation
+ *
+ * Copyright (c) 1999, repas AEG Automation GmbH
+ *
+ * 2000-12-1 pmb@mac.com
+ * - changed from anonymous to named semaphores for darwin
+ * - this required changing sem_info from containig an array of sem_t to an array of sem_t*
+ *
+ * IDENTIFICATION
+ * $Header: /cvsroot/pgsql/src/backend/port/darwin/Attic/sem.c,v 1.1 2000/12/11 00:49:54 tgl Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include <errno.h>
+#include <semaphore.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include "postgres.h"
+#include "storage/ipc.h"
+#include "storage/proc.h"
+#include "port/darwin/sem.h"
+
+#define SEMMAX IPC_NMAXSEM
+#define SETMAX ((MAXBACKENDS + SEMMAX - 1) / SEMMAX)
+#define OPMAX 8
+
+#define MODE 0700
+#define SHM_INFO_NAME "SysV_Sem_Info"
+#define SEM_NAME "/pgsql-darwin"
+
+struct pending_ops
+{
+ int op[OPMAX]; /* array of pending operations */
+ int idx; /* index of first free array member */
+};
+
+struct sem_info
+{
+ sem_t* sem;
+ struct
+ {
+ key_t key;
+ int nsems;
+ sem_t* sem[SEMMAX];/* array of POSIX semaphores */
+ struct sem semV[SEMMAX]; /* array of System V semaphore
+ * structures */
+ struct pending_ops pendingOps[SEMMAX]; /* array of pending
+ * operations */
+ } set[SETMAX];
+};
+
+static struct sem_info *SemInfo = (struct sem_info *) - 1;
+
+
+int
+semctl(int semid, int semnum, int cmd, /* ... */ union semun arg)
+{
+ int r = 0;
+
+ sem_wait(SemInfo->sem);
+
+ if (semid < 0 || semid >= SETMAX ||
+ semnum < 0 || semnum >= SemInfo->set[semid].nsems)
+ {
+ sem_post(SemInfo->sem);
+ errno = EINVAL;
+ return -1;
+ }
+
+ switch (cmd)
+ {
+ case GETNCNT:
+ r = SemInfo->set[semid].semV[semnum].semncnt;
+ break;
+
+ case GETPID:
+ r = SemInfo->set[semid].semV[semnum].sempid;
+ break;
+
+ case GETVAL:
+ r = SemInfo->set[semid].semV[semnum].semval;
+ break;
+
+ case GETALL:
+ for (semnum = 0; semnum < SemInfo->set[semid].nsems; semnum++)
+ arg.array[semnum] = SemInfo->set[semid].semV[semnum].semval;
+ break;
+
+ case SETVAL:
+ SemInfo->set[semid].semV[semnum].semval = arg.val;
+ break;
+
+ case SETALL:
+ for (semnum = 0; semnum < SemInfo->set[semid].nsems; semnum++)
+ SemInfo->set[semid].semV[semnum].semval = arg.array[semnum];
+ break;
+
+ case GETZCNT:
+ r = SemInfo->set[semid].semV[semnum].semzcnt;
+ break;
+
+ case IPC_RMID:
+ for (semnum = 0; semnum < SemInfo->set[semid].nsems; semnum++)
+ {
+ if (sem_close(SemInfo->set[semid].sem[semnum]) == -1)
+ r = -1;
+ }
+ SemInfo->set[semid].key = -1;
+ SemInfo->set[semid].nsems = 0;
+ break;
+
+ default:
+ sem_post(SemInfo->sem);
+ errno = EINVAL;
+ return -1;
+ }
+
+ sem_post(SemInfo->sem);
+
+ return r;
+}
+
+int
+semget(key_t key, int nsems, int semflg)
+{
+ int fd,
+ semid,
+ semnum /* , semnum1 */ ;
+ int exist = 0;
+ char semname[64];
+
+ if (nsems < 0 || nsems > SEMMAX)
+ {
+#ifdef DEBUG_IPC
+ fprintf(stderr, "darwin semget aborting because nsems out of range. (%d)\n", nsems);
+#endif
+ errno = EINVAL;
+ return -1;
+ }
+
+ /* open and map shared memory */
+ if (SemInfo == (struct sem_info *) - 1)
+ {
+#ifdef DEBUG_IPC
+ fprintf(stderr, "darwin initializing shared mem for semaphore shim.\n");
+#endif
+ /* test if the shared memory already exists */
+ fd = shm_open(SHM_INFO_NAME, O_RDWR | O_CREAT | O_EXCL, MODE);
+ if (fd == -1 && errno == EEXIST)
+ {
+ exist = 1;
+ fd = shm_open(SHM_INFO_NAME, O_RDWR | O_CREAT, MODE);
+ }
+ if (fd == -1)
+ return fd;
+ /* The size may only be set once. Ignore errors. */
+ ftruncate(fd, sizeof(struct sem_info));
+ SemInfo = mmap(NULL, sizeof(struct sem_info),
+ PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+ if (SemInfo == MAP_FAILED)
+ return -1;
+ if (!exist)
+ {
+ /* create semaphore for locking */
+ sprintf(semname, "%s-map", SEM_NAME);
+#ifdef DEBUG_IPC
+ fprintf(stderr, "darwin creating sem %s to cover shared mem.\n", semname);
+#endif
+ SemInfo->sem = sem_open(semname, O_CREAT, semflg & 0777, 1);
+ sem_wait(SemInfo->sem);
+ /* initilize shared memory */
+ memset(SemInfo->set, 0, sizeof(SemInfo->set));
+ for (semid = 0; semid < SETMAX; semid++)
+ SemInfo->set[semid].key = -1;
+ sem_post(SemInfo->sem);
+ }
+ }
+
+ sem_wait(SemInfo->sem);
+
+ if (key != IPC_PRIVATE)
+ {
+ /* search existing element */
+ semid = 0;
+ while (semid < SETMAX && SemInfo->set[semid].key != key)
+ semid++;
+ if (!(semflg & IPC_CREAT) && semid >= SETMAX)
+ {
+ sem_post(SemInfo->sem);
+ errno = ENOENT;
+ return -1;
+ }
+ else if (semid < SETMAX)
+ {
+ if (semflg & IPC_CREAT && semflg & IPC_EXCL)
+ {
+ sem_post(SemInfo->sem);
+ errno = EEXIST;
+ return -1;
+ }
+ else
+ {
+ if (nsems != 0 && SemInfo->set[semid].nsems < nsems)
+ {
+#ifdef DEBUG_IPC
+fprintf(stderr, "darwin semget failed because if (nsems != 0 && SemInfo->set[semid].nsems < nsems) %d %d\n",
+ nsems, SemInfo->set[semid].nsems);
+#endif
+ sem_post(SemInfo->sem);
+ errno = EINVAL;
+ return -1;
+ }
+ sem_post(SemInfo->sem);
+ return semid;
+ }
+ }
+ }
+
+ /* search first free element */
+ semid = 0;
+ while (semid < SETMAX && SemInfo->set[semid].key != -1)
+ semid++;
+ if (semid >= SETMAX)
+ {
+#ifdef DEBUG_IPC
+ fprintf(stderr, "darwin semget failed because all keys were -1 up to SETMAX\n");
+#endif
+ sem_post(SemInfo->sem);
+ errno = ENOSPC;
+ return -1;
+ }
+
+ for (semnum = 0; semnum < nsems; semnum++)
+ {
+ sprintf(semname, "%s-%d-%d", SEM_NAME, semid, semnum);
+#ifdef DEBUG_IPC
+ fprintf(stderr, "darwin creating sem %s to cover set %d num %dm.\n", semname, semid, semnum);
+#endif
+ SemInfo->set[semid].sem[semnum] = sem_open(semname, O_CREAT, semflg & 0777, 0);
+
+/* Currently sem_init always returns -1.
+ if( sem_init( &SemInfo->set[semid].sem[semnum], 1, 0 ) == -1 ) {
+ for( semnum1 = 0; semnum1 < semnum; semnum1++ ) {
+ sem_close( SemInfo->set[semid].sem[semnum1] );
+ }
+ sem_post( SemInfo->sem );
+ return -1;
+ }
+*/
+ }
+
+ SemInfo->set[semid].key = key;
+ SemInfo->set[semid].nsems = nsems;
+
+ sem_post(SemInfo->sem);
+
+ return semid;
+}
+
+int
+semop(int semid, struct sembuf * sops, size_t nsops)
+{
+ int i,
+ r = 0,
+ r1,
+ errno1 = 0,
+ op;
+
+ sem_wait(SemInfo->sem);
+
+ if (semid < 0 || semid >= SETMAX)
+ {
+ sem_post(SemInfo->sem);
+ errno = EINVAL;
+ return -1;
+ }
+ for (i = 0; i < nsops; i++)
+ {
+ if ( /* sops[i].sem_num < 0 || */ sops[i].sem_num >= SemInfo->set[semid].nsems)
+ {
+ sem_post(SemInfo->sem);
+ errno = EFBIG;
+ return -1;
+ }
+ }
+
+ for (i = 0; i < nsops; i++)
+ {
+ if (sops[i].sem_op < 0)
+ {
+ if (SemInfo->set[semid].semV[sops[i].sem_num].semval < -sops[i].sem_op)
+ {
+ if (sops[i].sem_flg & IPC_NOWAIT)
+ {
+ sem_post(SemInfo->sem);
+ errno = EAGAIN;
+ return -1;
+ }
+ SemInfo->set[semid].semV[sops[i].sem_num].semncnt++;
+ if (SemInfo->set[semid].pendingOps[sops[i].sem_num].idx >= OPMAX)
+ {
+ /* pending operations array overflow */
+ sem_post(SemInfo->sem);
+ errno = ERANGE;
+ return -1;
+ }
+ SemInfo->set[semid].pendingOps[sops[i].sem_num].op[SemInfo->set[semid].pendingOps[sops[i].sem_num].idx++] = sops[i].sem_op;
+ /* suspend */
+ sem_post(SemInfo->sem); /* avoid deadlock */
+ r1 = sem_wait(SemInfo->set[semid].sem[sops[i].sem_num]);
+ sem_wait(SemInfo->sem);
+ if (r1)
+ {
+ errno1 = errno;
+ r = r1;
+ /* remove pending operation */
+ SemInfo->set[semid].pendingOps[sops[i].sem_num].op[--SemInfo->set[semid].pendingOps[sops[i].sem_num].idx] = 0;
+ }
+ else
+ SemInfo->set[semid].semV[sops[i].sem_num].semval -= -sops[i].sem_op;
+ SemInfo->set[semid].semV[sops[i].sem_num].semncnt--;
+ }
+ else
+ SemInfo->set[semid].semV[sops[i].sem_num].semval -= -sops[i].sem_op;
+ }
+ else if (sops[i].sem_op > 0)
+ {
+ SemInfo->set[semid].semV[sops[i].sem_num].semval += sops[i].sem_op;
+ op = sops[i].sem_op;
+ while (op > 0 && SemInfo->set[semid].pendingOps[sops[i].sem_num].idx > 0)
+ { /* operations pending */
+ if (SemInfo->set[semid].pendingOps[sops[i].sem_num].op[SemInfo->set[semid].pendingOps[sops[i].sem_num].idx - 1] + op >= 0)
+ {
+ /* unsuspend processes */
+ if (sem_post(SemInfo->set[semid].sem[sops[i].sem_num]))
+ {
+ errno1 = errno;
+ r = -1;
+ }
+ /* adjust pending operations */
+ op += SemInfo->set[semid].pendingOps[sops[i].sem_num].op[--SemInfo->set[semid].pendingOps[sops[i].sem_num].idx];
+ SemInfo->set[semid].pendingOps[sops[i].sem_num].op[SemInfo->set[semid].pendingOps[sops[i].sem_num].idx] = 0;
+ }
+ else
+ {
+ /* adjust pending operations */
+ SemInfo->set[semid].pendingOps[sops[i].sem_num].op[SemInfo->set[semid].pendingOps[sops[i].sem_num].idx - 1] += op;
+ op = 0;
+ }
+ }
+ }
+ else
+ /* sops[i].sem_op == 0 */
+ {
+ /* not supported */
+ sem_post(SemInfo->sem);
+ errno = ENOSYS;
+ return -1;
+ }
+ SemInfo->set[semid].semV[sops[i].sem_num].sempid = getpid();
+ }
+
+ sem_post(SemInfo->sem);
+
+ errno = errno1;
+ return r;
+}
diff --git a/src/backend/port/dynloader/darwin.c b/src/backend/port/dynloader/darwin.c
index d45e4ad9eaf..6c149b9f55e 100644
--- a/src/backend/port/dynloader/darwin.c
+++ b/src/backend/port/dynloader/darwin.c
@@ -3,14 +3,14 @@
* available with a PostgreSQL-compatible license. Kudos Wilfredo
* Sánchez <wsanchez@apple.com>.
*
- * $Header: /cvsroot/pgsql/src/backend/port/dynloader/darwin.c,v 1.3 2000/11/14 21:26:21 petere Exp $
+ * $Header: /cvsroot/pgsql/src/backend/port/dynloader/darwin.c,v 1.4 2000/12/11 00:49:54 tgl Exp $
*/
#include "postgres.h"
#include <mach-o/dyld.h>
#include "dynloader.h"
-void *pg_dlopen(const char *filename)
+void *pg_dlopen(char *filename)
{
NSObjectFileImage image;
@@ -26,18 +26,26 @@ void pg_dlclose(void *handle)
return;
}
-PGFunction pg_dlsym(void *handle, const char *funcname)
+PGFunction pg_dlsym(void *handle, char *funcname)
{
NSSymbol symbol;
char *symname = (char*)malloc(strlen(funcname)+2);
sprintf(symname, "_%s", funcname);
- symbol = NSLookupAndBindSymbol(symname);
- free(symname);
- return (PGFunction) NSAddressOfSymbol(symbol);
+ if (NSIsSymbolNameDefined(symname))
+ {
+ symbol = NSLookupAndBindSymbol(symname);
+ free(symname);
+ return (PGFunction) NSAddressOfSymbol(symbol);
+ }
+ else
+ {
+ free(symname);
+ return (PGFunction)NULL;
+ }
}
-const char *pg_dlerror(void)
+char *pg_dlerror(void)
{
return "no error message available";
}
diff --git a/src/backend/port/dynloader/darwin.h b/src/backend/port/dynloader/darwin.h
index 36ba3f34886..0e73eb2be67 100644
--- a/src/backend/port/dynloader/darwin.h
+++ b/src/backend/port/dynloader/darwin.h
@@ -1,8 +1,8 @@
-/* $Header: /cvsroot/pgsql/src/backend/port/dynloader/darwin.h,v 1.2 2000/11/09 19:00:50 petere Exp $ */
+/* $Header: /cvsroot/pgsql/src/backend/port/dynloader/darwin.h,v 1.3 2000/12/11 00:49:54 tgl Exp $ */
#include "fmgr.h"
-void *pg_dlopen(const char *filename);
-PGFunction pg_dlsym(void *handle, const char *funcname);
+void* pg_dlopen(char *filename);
+PGFunction pg_dlsym(void *handle, char *funcname);
void pg_dlclose(void *handle);
-const char *pg_dlerror(void);
+char* pg_dlerror(void);
diff --git a/src/backend/storage/buffer/s_lock.c b/src/backend/storage/buffer/s_lock.c
index 72b167977d5..7f658ad26a8 100644
--- a/src/backend/storage/buffer/s_lock.c
+++ b/src/backend/storage/buffer/s_lock.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/storage/buffer/Attic/s_lock.c,v 1.26 2000/11/28 23:27:55 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/storage/buffer/Attic/s_lock.c,v 1.27 2000/12/11 00:49:51 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -119,6 +119,35 @@ _success: \n\
#endif /* __m68k__ */
+#if defined(__APPLE__) && defined(__ppc__)
+/* used in darwin. */
+/* We key off __APPLE__ here because this function differs from
+ * the LinuxPPC implementation only in compiler syntax.
+ */
+static void
+tas_dummy()
+{
+ __asm__(" \n\
+ .globl tas \n\
+ .globl _tas \n\
+_tas: \n\
+tas: \n\
+ lwarx r5,0,r3 \n\
+ cmpwi r5,0 \n\
+ bne fail \n\
+ addi r5,r5,1 \n\
+ stwcx. r5,0,r3 \n\
+ beq success \n\
+fail: li r3,1 \n\
+ blr \n\
+success: \n\
+ li r3,0 \n\
+ blr \n\
+ ");
+}
+
+#endif /* __APPLE__ && __ppc__ */
+
#if defined(__powerpc__)
/* Note: need a nice gcc constrained asm version so it can be inlined */
static void
diff --git a/src/backend/storage/ipc/ipc.c b/src/backend/storage/ipc/ipc.c
index 804411bb960..ee1bd7aeab1 100644
--- a/src/backend/storage/ipc/ipc.c
+++ b/src/backend/storage/ipc/ipc.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipc.c,v 1.56 2000/12/03 17:18:10 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/storage/ipc/ipc.c,v 1.57 2000/12/11 00:49:52 tgl Exp $
*
* NOTES
*
@@ -45,14 +45,19 @@
#ifdef HAVE_KERNEL_OS_H
#include <kernel/OS.h>
#endif
-#include "miscadmin.h"
-#include "utils/memutils.h"
-#include "libpq/libpq.h"
#if defined(solaris_sparc)
#include <sys/ipc.h>
#endif
+#if defined(__darwin__)
+#include "port/darwin/sem.h"
+#endif
+
+#include "miscadmin.h"
+#include "utils/memutils.h"
+#include "libpq/libpq.h"
+
/*
* This flag is set during proc_exit() to change elog()'s behavior,
diff --git a/src/backend/storage/ipc/spin.c b/src/backend/storage/ipc/spin.c
index a93ae69e032..554eeba797e 100644
--- a/src/backend/storage/ipc/spin.c
+++ b/src/backend/storage/ipc/spin.c
@@ -14,14 +14,14 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/spin.c,v 1.26 2000/11/28 23:27:56 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/storage/ipc/Attic/spin.c,v 1.27 2000/12/11 00:49:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include <errno.h>
-#ifndef HAS_TEST_AND_SET
+#if !defined(HAS_TEST_AND_SET) && defined(HAVE_SYS_SEM_H)
#include <sys/sem.h>
#endif
diff --git a/src/backend/storage/lmgr/proc.c b/src/backend/storage/lmgr/proc.c
index 0193a7ad2e7..550a43bb54a 100644
--- a/src/backend/storage/lmgr/proc.c
+++ b/src/backend/storage/lmgr/proc.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.84 2000/11/28 23:27:56 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.85 2000/12/11 00:49:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -47,7 +47,7 @@
* This is so that we can support more backends. (system-wide semaphore
* sets run out pretty fast.) -ay 4/95
*
- * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.84 2000/11/28 23:27:56 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/proc.c,v 1.85 2000/12/11 00:49:52 tgl Exp $
*/
#include "postgres.h"
@@ -61,6 +61,10 @@
#include <sys/sem.h>
#endif
+#if defined(__darwin__)
+#include "port/darwin/sem.h"
+#endif
+
#include "miscadmin.h"
@@ -71,6 +75,7 @@
#include "storage/proc.h"
+
void HandleDeadLock(SIGNAL_ARGS);
static void ProcFreeAllSemaphores(void);
static bool GetOffWaitqueue(PROC *);
diff --git a/src/include/port/darwin.h b/src/include/port/darwin.h
index 597b998a017..5d5072aa550 100644
--- a/src/include/port/darwin.h
+++ b/src/include/port/darwin.h
@@ -1,5 +1,10 @@
+#define __darwin__ 1
+
+#if defined(__ppc__)
#define HAS_TEST_AND_SET
-#if defined(__powerpc__)
+#endif
+
+#if defined(__ppc__)
typedef unsigned int slock_t;
#else
typedef unsigned char slock_t;
diff --git a/src/include/port/darwin/sem.h b/src/include/port/darwin/sem.h
new file mode 100644
index 00000000000..9e3e28d646a
--- /dev/null
+++ b/src/include/port/darwin/sem.h
@@ -0,0 +1,75 @@
+/*-------------------------------------------------------------------------
+ *
+ * sem.h
+ * System V Semaphore Emulation
+ *
+ * Copyright (c) 1999, repas AEG Automation GmbH
+ *
+ *
+ * IDENTIFICATION
+ * $Header: /cvsroot/pgsql/src/include/port/darwin/Attic/sem.h,v 1.1 2000/12/11 00:49:53 tgl Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef _SYS_SEM_H
+#define _SYS_SEM_H
+
+/* #define DEBUG_IPC here if you want to see the shim in action */
+
+#include <sys/ipc.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/*
+ * Semctl Command Definitions.
+ */
+
+#define GETNCNT 3 /* get semncnt */
+#define GETPID 4 /* get sempid */
+#define GETVAL 5 /* get semval */
+#define GETALL 6 /* get all semval's */
+#define GETZCNT 7 /* get semzcnt */
+#define SETVAL 8 /* set semval */
+#define SETALL 9 /* set all semval's */
+
+#ifndef ushort_t
+#define ushort_t unsigned int
+#endif
+
+/*
+ * There is one semaphore structure for each semaphore in the system.
+ */
+
+ struct sem
+ {
+ ushort_t semval; /* semaphore text map address */
+ pid_t sempid; /* pid of last operation */
+ ushort_t semncnt; /* # awaiting semval > cval */
+ ushort_t semzcnt; /* # awaiting semval = 0 */
+ };
+
+/*
+ * User semaphore template for semop system calls.
+ */
+
+ struct sembuf
+ {
+ ushort_t sem_num; /* semaphore # */
+ short sem_op; /* semaphore operation */
+ short sem_flg; /* operation flags */
+ };
+
+ extern int semctl(int semid, int semnum, int cmd, /* ... */ union semun arg);
+ extern int semget(key_t key, int nsems, int semflg);
+ extern int semop(int semid, struct sembuf * sops, size_t nsops);
+
+#ifdef __cplusplus
+}
+
+#endif
+
+#endif /* _SYS_SEM_H */
diff --git a/src/makefiles/Makefile.darwin b/src/makefiles/Makefile.darwin
index fe167e048dd..cfeba7f922f 100644
--- a/src/makefiles/Makefile.darwin
+++ b/src/makefiles/Makefile.darwin
@@ -1,4 +1,5 @@
AROPT = cr
+AWK= awk
DLSUFFIX = .so
CFLAGS_SL = -bundle -undefined suppress
diff --git a/src/template/darwin b/src/template/darwin
index fb99dffb89c..9685f4840a9 100644
--- a/src/template/darwin
+++ b/src/template/darwin
@@ -1,4 +1,3 @@
-# regular cpp is broken in current development releases
+# -traditional-cpp means "don't use apple's cpp-precomp" on darwin
+# this should change to -no-cpp-precomp when that flag is implemented
CC="$CC -traditional-cpp"
-# be on safe side while they sort out their compiler
-CFLAGS=-O0
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-20 07:28:17 +0000