sync with OpenBSD -current

bin/pax/cpio.1

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: cpio.1,v 1.36 2020/01/16 16:46:46 schwarze Exp $
+.\"	$OpenBSD: cpio.1,v 1.37 2023/12/09 23:00:11 jca Exp $
 .\"
 .\" Copyright (c) 1997 SigmaSoft, Th. Lockert
 .\" All rights reserved.
@@ -23,7 +23,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: January 16 2020 $
+.Dd $Mdocdate: December 9 2023 $
 .Dt CPIO 1
 .Os
 .Sh NAME
@@ -98,6 +98,8 @@ format.
 Old octal character
 .Nm
 format.
+.It Ar pax
+POSIX pax format.
 .It Ar sv4cpio
 SVR4 hex
 .Nm
@@ -173,6 +175,8 @@ format.
 Old octal character
 .Nm
 format.
+.It Ar pax
+POSIX pax format.
 .It Ar sv4cpio
 SVR4 hex
 .Nm
@@ -298,6 +302,8 @@ be used for larger files.
 .It bcpio Ta "4 Gigabytes"
 .It sv4cpio Ta "4 Gigabytes"
 .It cpio Ta "8 Gigabytes"
+.\" XXX should be "unlimited"
+.It pax Ta "8 Gigabytes"
 .It tar Ta "8 Gigabytes"
 .It ustar Ta "8 Gigabytes"
 .El

bin/pax/extern.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: extern.h,v 1.61 2023/11/26 16:04:17 espie Exp $	*/
+/*	$OpenBSD: extern.h,v 1.62 2023/12/09 23:00:11 jca Exp $	*/
 /*	$NetBSD: extern.h,v 1.5 1996/03/26 23:54:16 mrg Exp $	*/
 
 /*-
@@ -284,6 +284,7 @@ int tar_wr(ARCHD *);
 int ustar_id(char *, int);
 int ustar_rd(ARCHD *, char *);
 int ustar_wr(ARCHD *);
+int pax_wr(ARCHD *);
 
 /*
  * tty_subs.c

bin/pax/options.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: options.c,v 1.106 2023/11/26 16:04:17 espie Exp $	*/
+/*	$OpenBSD: options.c,v 1.107 2023/12/09 23:00:11 jca Exp $	*/
 /*	$NetBSD: options.c,v 1.6 1996/03/26 23:54:18 mrg Exp $	*/
 
 /*-
@@ -216,6 +216,8 @@ FSUB fsub[] = {
 	{ },
 /* 9: gzip, to detect failure to use -z */
 	{ },
+/* 10: POSIX PAX */
+	{ },
 #else
 /* 6: compress, to detect failure to use -Z */
 	{NULL, 0, 4, 0, 0, 0, 0, compress_id},
@@ -225,6 +227,10 @@ FSUB fsub[] = {
 	{NULL, 0, 4, 0, 0, 0, 0, bzip2_id},
 /* 9: gzip, to detect failure to use -z */
 	{NULL, 0, 4, 0, 0, 0, 0, gzip_id},
+/* 10: POSIX PAX */
+	{"pax", 5120, BLKMULT, 0, 1, BLKMULT, 0, ustar_id, no_op,
+	ustar_rd, tar_endrd, no_op, pax_wr, tar_endwr, tar_trail,
+	tar_opt},
 #endif
 };
 #define	F_OCPIO	0	/* format when called as cpio -6 */

bin/pax/pax.1

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: pax.1,v 1.76 2022/03/31 17:27:14 naddy Exp $
+.\"	$OpenBSD: pax.1,v 1.77 2023/12/09 23:00:11 jca Exp $
 .\"	$NetBSD: pax.1,v 1.3 1995/03/21 09:07:37 cgd Exp $
 .\"
 .\" Copyright (c) 1992 Keith Muller.
@@ -34,7 +34,7 @@
 .\"
 .\"	@(#)pax.1	8.4 (Berkeley) 4/18/94
 .\"
-.Dd $Mdocdate: March 31 2022 $
+.Dd $Mdocdate: December 9 2023 $
 .Dt PAX 1
 .Os
 .Sh NAME
@@ -868,6 +868,11 @@ standard.
 The default blocksize for this format is 10240 bytes.
 Filenames stored by this format must be 100 characters or less in length;
 the total pathname must be 256 characters or less.
+.It Cm pax
+The pax interchange format specified in the
+.St -p1003.1-2001
+standard.
+The default blocksize for this format is 5120 bytes.
 .El
 .Pp
 .Nm
@@ -1081,9 +1086,10 @@ utility is compliant with the
 specification,
 except that the
 .Cm pax
-archive format and the
+archive format is only partially supported,
+and the
 .Cm listopt
-keyword are unsupported.
+keyword is unsupported.
 .Pp
 The flags
 .Op Fl 0BDEGjOPTUYZz ,

bin/pax/tar.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: tar.c,v 1.73 2023/09/04 17:05:34 jca Exp $	*/
+/*	$OpenBSD: tar.c,v 1.74 2023/12/09 23:00:11 jca Exp $	*/
 /*	$NetBSD: tar.c,v 1.5 1995/03/21 09:07:49 cgd Exp $	*/
 
 /*-
@@ -35,10 +35,12 @@
  */
 
 #include <sys/types.h>
+#include <sys/queue.h>
 #include <sys/stat.h>
 #include <ctype.h>
 #include <errno.h>
 #include <grp.h>
+#include <libgen.h>
 #include <limits.h>
 #include <pwd.h>
 #include <stdio.h>
@@ -50,6 +52,19 @@
 #include "extern.h"
 #include "tar.h"
 
+SLIST_HEAD(xheader, xheader_record);
+struct xheader_record {
+	SLIST_ENTRY(xheader_record)	 entry;
+	size_t				 reclen;
+	char				*record;
+};
+
+/* shortest possible extended record: "5 a=\n" */
+#define MINXHDRSZ	5
+
+/* longest record we'll accept */
+#define MAXXHDRSZ	BLKMULT
+
 /*
  * Routines for reading, writing and header identify of various versions of tar
  */
@@ -60,6 +75,9 @@ static char *name_split(char *, int);
 static int ul_oct(u_long, char *, int, int);
 static int ull_oct(unsigned long long, char *, int, int);
 static int rd_xheader(ARCHD *arcn, int, off_t);
+#ifndef SMALL
+static int wr_xheader(ARCHD *, struct xheader *);
+#endif
 
 static uid_t uid_nobody;
 static uid_t uid_warn;
@@ -891,24 +909,121 @@ reset:
 	return(0);
 }
 
-/*
+#ifndef SMALL
- * ustar_wr()
+static int
- *	write a ustar header for the file specified in the ARCHD to the archive
+xheader_add(struct xheader *xhdr, const char *keyword,
- *	Have to check for file types that cannot be stored and file names that
+    const char *value)
- *	are too long. Be careful of the term (last arg) to ul_oct, we only use
+{
- *	'\0' for the termination character (this is different than picky tar)
+	struct xheader_record *rec;
- *	ASSUMED: space after header in header block is zero filled
+	int reclen, tmplen;
- * Return:
+	char *s;
- *	0 if file has data to be written after the header, 1 if file has NO
- *	data to write after the header, -1 if archive write failed
- */
 
-int
+	tmplen = MINXHDRSZ;
-ustar_wr(ARCHD *arcn)
+	do {
+		reclen = tmplen;
+		tmplen = snprintf(NULL, 0, "%d %s=%s\n", reclen, keyword,
+		    value);
+	} while (tmplen >= 0 && tmplen != reclen);
+	if (tmplen < 0)
+		return -1;
+
+	rec = calloc(1, sizeof(*rec));
+	if (rec == NULL)
+		return -1;
+	rec->reclen = reclen;
+	if (asprintf(&s, "%d %s=%s\n", reclen, keyword, value) < 0) {
+		free(rec);
+		return -1;
+	}
+	rec->record = s;
+
+	SLIST_INSERT_HEAD(xhdr, rec, entry);
+
+	return 0;
+}
+
+static void
+xheader_free(struct xheader *xhdr)
+{
+	struct xheader_record *rec;
+
+	while (!SLIST_EMPTY(xhdr)) {
+		rec = SLIST_FIRST(xhdr);
+		SLIST_REMOVE_HEAD(xhdr, entry);
+		free(rec->record);
+		free(rec);
+	}
+}
+
+static int
+wr_xheader(ARCHD *arcn, struct xheader *xhdr)
+{
+	char hdblk[sizeof(HD_USTAR)];
+	HD_USTAR *hd;
+	char buf[sizeof(hd->name) + 1];
+	struct xheader_record *rec;
+	size_t size;
+
+	size = 0;
+	SLIST_FOREACH(rec, xhdr, entry)
+		size += rec->reclen;
+
+	memset(hdblk, 0, sizeof(hdblk));
+	hd = (HD_USTAR *)hdblk;
+	hd->typeflag = XHDRTYPE;
+	strncpy(hd->magic, TMAGIC, TMAGLEN);
+	strncpy(hd->version, TVERSION, TVERSLEN);
+	if (ul_oct(size, hd->size, sizeof(hd->size), 3))
+		return -1;
+
+	/*
+	 * Best effort attempt at providing a useful file name for
+	 * implementations that don't support pax format. Don't bother
+	 * with truncation if the resulting file name doesn't fit.
+	 * XXX dirname/basename portability (check return value?)
+	 */
+	(void)snprintf(buf, sizeof(buf), "%s/PaxHeaders.%ld/%s",
+	    dirname(arcn->name), (long)getpid(), basename(arcn->name));
+	fieldcpy(hd->name, sizeof(hd->name), buf, sizeof(buf));
+
+	if (ul_oct(arcn->sb.st_mode, hd->mode, sizeof(hd->mode), 0) ||
+	    ull_oct(arcn->sb.st_mtime < 0 ? 0 : arcn->sb.st_mtime, hd->mtime,
+		sizeof(hd->mtime), 1) ||
+	    ul_oct(arcn->sb.st_uid, hd->uid, sizeof(hd->uid), 0) ||
+	    ul_oct(arcn->sb.st_gid, hd->gid, sizeof(hd->gid), 0))
+		return -1;
+
+	if (ul_oct(tar_chksm(hdblk, sizeof(HD_USTAR)), hd->chksum,
+	   sizeof(hd->chksum), 3))
+		return -1;
+
+	/* write out extended header */
+	if (wr_rdbuf(hdblk, sizeof(HD_USTAR)) < 0)
+		return -1;
+	if (wr_skip(BLKMULT - sizeof(HD_USTAR)) < 0)
+		return -1;
+
+	/* write out extended header records */
+	SLIST_FOREACH(rec, xhdr, entry)
+		if (wr_rdbuf(rec->record, rec->reclen) < 0)
+			return -1;
+
+	if (wr_skip(TAR_PAD(size)) < 0)
+		return -1;
+
+	return 0;
+}
+#endif
+
+static int
+wr_ustar_or_pax(ARCHD *arcn, int ustar)
 {
 	HD_USTAR *hd;
 	const char *name;
 	char *pt, hdblk[sizeof(HD_USTAR)];
+#ifndef SMALL
+	struct xheader xhdr = SLIST_HEAD_INITIALIZER(xhdr);
+#endif
 
 	/*
 	 * check for those file system types ustar cannot store
@@ -929,8 +1044,19 @@ ustar_wr(ARCHD *arcn)
 	 */
 	if (PAX_IS_LINK(arcn->type) &&
 	    ((size_t)arcn->ln_nlen > sizeof(hd->linkname))) {
-		paxwarn(1, "Link name too long for ustar %s", arcn->ln_name);
+		if (ustar) {
-		return(1);
+			paxwarn(1, "Link name too long for ustar %s",
+			    arcn->ln_name);
+			return(1);
+		}
+#ifndef SMALL
+		else if (xheader_add(&xhdr, "linkpath", arcn->name) == -1) {
+			paxwarn(1, "Link name too long for pax %s",
+			    arcn->ln_name);
+			xheader_free(&xhdr);
+			return(1);
+		}
+#endif
 	}
 
 	/*
@@ -938,8 +1064,21 @@ ustar_wr(ARCHD *arcn)
 	 * pt != arcn->name, the name has to be split
 	 */
 	if ((pt = name_split(arcn->name, arcn->nlen)) == NULL) {
-		paxwarn(1, "File name too long for ustar %s", arcn->name);
+		if (ustar) {
-		return(1);
+			paxwarn(1, "File name too long for ustar %s",
+			    arcn->name);
+			return(1);
+		}
+#ifndef SMALL
+		else if (xheader_add(&xhdr, "path", arcn->name) == -1) {
+			paxwarn(1, "File name too long for pax %s",
+			    arcn->ln_name);
+			xheader_free(&xhdr);
+			return(1);
+		}
+		/* PAX format, we don't need to split the path */
+		pt = arcn->name;
+#endif
 	}
 
 	/*
@@ -1074,6 +1213,18 @@ ustar_wr(ARCHD *arcn)
 			strncpy(hd->gname, name, sizeof(hd->gname));
 	}
 
+#ifndef SMALL
+	/* write out a pax extended header if needed */
+	if (!SLIST_EMPTY(&xhdr)) {
+		int ret;
+
+		ret = wr_xheader(arcn, &xhdr);
+		xheader_free(&xhdr);
+		if (ret == -1)
+			return(-1);
+	}
+#endif
+
 	/*
 	 * calculate and store the checksum write the header to the archive
 	 * return 0 tells the caller to now write the file data, 1 says no data
@@ -1091,6 +1242,9 @@ ustar_wr(ARCHD *arcn)
 	return(1);
 
     out:
+#ifndef SMALL
+	xheader_free(&xhdr);
+#endif
 	/*
 	 * header field is out of range
 	 */
@@ -1098,6 +1252,42 @@ ustar_wr(ARCHD *arcn)
 	return(1);
 }
 
+/*
+ * ustar_wr()
+ *	Write out a ustar format archive.
+ *	Have to check for file types that cannot be stored and file names that
+ *	are too long. Be careful of the term (last arg) to ul_oct, we only use
+ *	'\0' for the termination character (this is different than picky tar).
+ *	ASSUMED: space after header in header block is zero filled
+ * Return:
+ *	0 if file has data to be written after the header, 1 if file has NO
+ *	data to write after the header, -1 if archive write failed
+ */
+int
+ustar_wr(ARCHD *arcn)
+{
+	return wr_ustar_or_pax(arcn, 1);
+}
+
+/*
+ * pax_wr()
+ *	Write out a pax format archive.
+ *	Have to check for file types that cannot be stored.  Be careful of the
+ *      term (last arg) to ul_oct, we only use '\0' for the termination
+ *      character (this is different than picky tar).
+ *	ASSUMED: space after header in header block is zero filled
+ * Return:
+ *	0 if file has data to be written after the header, 1 if file has NO
+ *	data to write after the header, -1 if archive write failed
+ */
+#ifndef SMALL
+int
+pax_wr(ARCHD *arcn)
+{
+	return wr_ustar_or_pax(arcn, 0);
+}
+#endif
+
 /*
  * name_split()
  *	see if the name has to be split for storage in a ustar header. We try
@@ -1184,12 +1374,6 @@ expandname(char *buf, size_t len, char **gnu_name, const char *name,
 	return(nlen);
 }
 
-/* shortest possible extended record: "5 a=\n" */
-#define MINXHDRSZ	5
-
-/* longest record we'll accept */
-#define MAXXHDRSZ	BLKMULT
-
 static int
 rd_time(struct timespec *ts, const char *keyword, char *p)
 {

lib/libc/arch/DEFS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: DEFS.h,v 1.1 2022/01/01 23:47:14 guenther Exp $	*/
+/*	$OpenBSD: DEFS.h,v 1.2 2023/12/10 16:45:50 deraadt Exp $	*/
 /*
  * Copyright (c) 2015,2018,2021 Philip Guenther <guenther@openbsd.org>
  *
@@ -67,3 +67,9 @@
 #endif
 
 #define _END(x)		.size x, . - x
+
+#define PINSYSCALL(sysno, label)					\
+	.pushsection .openbsd.syscalls,"",@progbits;			\
+	.long label;							\
+	.long sysno;							\
+	.popsection;

lib/libc/arch/aarch64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.6 2022/12/08 01:25:43 guenther Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.7 2023/12/10 16:45:50 deraadt Exp $	*/
 /*	$NetBSD: SYS.h,v 1.8 2003/08/07 16:42:02 agc Exp $	*/
 
 /*-
@@ -53,7 +53,8 @@
 
 #define SYSTRAP(x) \
 	ldr	x8, =SYS_ ## x;		\
-	svc	0;			\
+97:	svc	0;			\
+	PINSYSCALL(SYS_ ## x, 97b);	\
 	dsb	nsh;			\
 	isb
 

lib/libc/arch/alpha/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.16 2023/12/06 06:15:33 miod Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.17 2023/12/10 16:45:50 deraadt Exp $	*/
 /*	$NetBSD: SYS.h,v 1.4 1996/10/17 03:03:53 cgd Exp $	*/
 
 /*
@@ -56,6 +56,12 @@
  */
 #define _END(x)		.size x, . - x
 
+#define PINSYSCALL(sysno, label)					\
+	.pushsection .openbsd.syscalls,"",@progbits;			\
+	.long label;							\
+	.long sysno;							\
+	.popsection;
+
 /*
  * For functions implemented in ASM that aren't syscalls.
  *   END_STRONG(x)	Like DEF_STRONG() in C; for standard/reserved C names
@@ -67,7 +73,8 @@
 
 #define	CALLSYS_NOERROR(name)					\
 	ldiq	v0, ___CONCAT(SYS_,name);			\
-	call_pal PAL_OSF1_callsys
+97:	call_pal PAL_OSF1_callsys;				\
+	PINSYSCALL(___CONCAT(SYS_,name), 97b)
 
 #define	CALLSYS_ERROR(name)					\
 	CALLSYS_NOERROR(name);					\

lib/libc/arch/amd64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.21 2023/01/11 01:55:17 mortimer Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.22 2023/12/10 16:45:50 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -41,7 +41,11 @@
 /* offsetof(struct tib, tib_errno) - offsetof(struct tib, __tib_tcb) */
 #define	TCB_OFFSET_ERRNO	32
 
-#define SYSTRAP(x)	movl $(SYS_ ## x),%eax; movq %rcx, %r10; syscall
+#define SYSTRAP(x)							\
+	movl $(SYS_ ## x),%eax;						\
+	movq %rcx, %r10;						\
+97:	syscall;							\
+	PINSYSCALL(SYS_ ## x, 97b)
 
 #define SYSENTRY(x)							\
 	SYSENTRY_HIDDEN(x);						\

lib/libc/arch/amd64/gen/setjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: setjmp.S,v 1.9 2020/10/21 17:22:59 kettenis Exp $	*/
+/*	$OpenBSD: setjmp.S,v 1.10 2023/12/10 16:45:51 deraadt Exp $	*/
 /*	$NetBSD: __setjmp14.S,v 1.1 2001/06/19 00:25:02 fvdl Exp $	*/
 
 /*
@@ -64,7 +64,8 @@ ENTRY(setjmp)
 	movl	$1,%edi			/* how = SIG_BLOCK */
 	xorl	%esi,%esi		/* set = empty */
 	movl	$SYS_sigprocmask,%eax
-	syscall
+99:	syscall
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	movq	%r8,%rdi		/* restore jmpbuf addr */
 	movq	%rax,(_JB_SIGMASK * 8)(%rdi)
 
@@ -100,7 +101,8 @@ ENTRY(longjmp)
 	movq	(_JB_SIGMASK * 8)(%rdi),%rsi	/* get set from sc_mask */
 	movl	$3,%edi				/* how = SIG_SETMASK */
 	movl	$SYS_sigprocmask,%eax
-	syscall
+98:	syscall
+	PINSYSCALL(SYS_sigprocmask, 98b)
 	movl	%r8d,%eax
 
 	leaq	 __jmpxor(%rip),%rcx

lib/libc/arch/amd64/gen/sigsetjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigsetjmp.S,v 1.9 2020/10/21 17:22:59 kettenis Exp $	*/
+/*	$OpenBSD: sigsetjmp.S,v 1.10 2023/12/10 16:45:51 deraadt Exp $	*/
 /*	$NetBSD: __setjmp14.S,v 1.1 2001/06/19 00:25:02 fvdl Exp $	*/
 
 /*
@@ -62,7 +62,8 @@ ENTRY(sigsetjmp)
 	movl	$1,%edi			/* how = SIG_BLOCK */
 	xorl	%esi,%esi		/* set = empty */
 	movl	$SYS_sigprocmask,%eax
-	syscall
+99:	syscall
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	movq	%r8,%rdi		/* restore jmpbuf addr */
 	movq	%rax,(_JB_SIGMASK * 8)(%rdi)
 
@@ -100,7 +101,8 @@ ENTRY(siglongjmp)
 	movq	(_JB_SIGMASK * 8)(%rdi),%rsi	/* get set from sc_mask */
 	movl	$3,%edi				/* how = SIG_SETMASK */
 	movl	$SYS_sigprocmask,%eax
-	syscall
+98:	syscall
+	PINSYSCALL(SYS_sigprocmask, 98b)
 2:	movl	%r8d,%eax
 
 	leaq	 __jmpxor(%rip),%rcx

lib/libc/arch/amd64/sys/tfork_thread.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: tfork_thread.S,v 1.11 2023/01/11 01:55:17 mortimer Exp $ */
+/*	$OpenBSD: tfork_thread.S,v 1.12 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
  * Copyright (c) 2003 Alan L. Cox <alc@cs.rice.edu>
@@ -56,7 +56,8 @@ ENTRY(__tfork_thread)
 	 */
 	movl	$SYS___tfork, %eax
 	.cfi_endproc
-	syscall
+99:	syscall
+	PINSYSCALL(SYS___tfork, 99b)
 	jb 	2f
 
 	/*
@@ -90,7 +91,8 @@ ENTRY(__tfork_thread)
 	 */
 	movl	$SYS___threxit, %eax
 	xorl	%edi, %edi
-	syscall
+98:	syscall
+	PINSYSCALL(SYS___threxit, 98b)
 	int3
 
 	/*

lib/libc/arch/arm/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.19 2022/12/08 01:25:43 guenther Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.20 2023/12/10 16:45:51 deraadt Exp $	*/
 /*	$NetBSD: SYS.h,v 1.8 2003/08/07 16:42:02 agc Exp $	*/
 
 /*-
@@ -54,7 +54,8 @@
 
 #define SYSTRAP(x) \
 	ldr	r12, =SYS_ ## x;			\
-	swi	0;					\
+97:	swi	0;					\
+	PINSYSCALL(SYS_ ## x, 97b);			\
 	dsb	nsh;					\
 	isb
 

lib/libc/arch/hppa/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.23 2023/02/11 06:10:39 guenther Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.24 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*
  * Copyright (c) 1998-2002 Michael Shalayeff
@@ -67,6 +67,11 @@
 #define	EXIT_WEAK(x)	EXIT_STRONG(x)				!\
 			.weak x
  
+#define PINSYSCALL(sysno, label)			\
+	.pushsection .openbsd.syscalls,"",@progbits	!\
+	.long label					!\
+	.long sysno					!\
+	.popsection
 
 #define SYSENTRY(x)				!\
 LEAF_ENTRY(__CONCAT(_thread_sys_,x))		!\
@@ -84,8 +89,9 @@ LEAF_ENTRY(__CONCAT(_thread_sys_,x))
 #define	SYSCALL(x)				!\
 	stw	rp, HPPA_FRAME_ERP(sr0,sp)	!\
 	ldil	L%SYSCALLGATE, r1		!\
-	ble	4(sr7, r1)			!\
+97:	ble	4(sr7, r1)			!\
-	ldi	__CONCAT(SYS_,x), t1		!\
+	PINSYSCALL(__CONCAT(SYS_,x), 97b)	!\
+	 ldi	__CONCAT(SYS_,x), t1		!\
 	comb,=	0, t1, 1f			!\
 	ldw	HPPA_FRAME_ERP(sr0,sp), rp	!\
 	/* set errno */				\
@@ -113,8 +119,9 @@ SYSEXIT_HIDDEN(x)
 SYSENTRY(x)					!\
 	stw	rp, HPPA_FRAME_ERP(sr0,sp)	!\
 	ldil	L%SYSCALLGATE, r1		!\
-	ble	4(sr7, r1)			!\
+97:	ble	4(sr7, r1)			!\
-	ldi	__CONCAT(SYS_,y), t1		!\
+	PINSYSCALL(__CONCAT(SYS_,x), 97b)	!\
+	 ldi	__CONCAT(SYS_,x), t1		!\
 	ldw	HPPA_FRAME_ERP(sr0,sp), rp	!\
 	bv	r0(rp)				!\
 	nop					!\

lib/libc/arch/hppa/gen/setjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: setjmp.S,v 1.11 2016/05/29 07:59:36 guenther Exp $	*/
+/*	$OpenBSD: setjmp.S,v 1.12 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -63,7 +63,8 @@ ALTENTRY(setjmp)
 	copy	%r0, %arg1		; set = empty
 	stw	%rp, HPPA_FRAME_ERP(%sr0,%sp)
 	ldil	L%SYSCALLGATE, %r1
-	ble	4(%sr7, %r1)
+99:	ble	4(%sr7, %r1)
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	 ldi	SYS_sigprocmask, %t1
 	ldw	HPPA_FRAME_ERP(%sr0,%sp), %rp
 
@@ -129,7 +130,8 @@ ALTENTRY(longjmp)
 	ldi	3, %arg0		; how = SIG_SETMASK
 	stw	%rp, HPPA_FRAME_ERP(%sr0,%sp)
 	ldil	L%SYSCALLGATE, %r1
-	ble	4(%sr7, %r1)
+98:	ble	4(%sr7, %r1)
+	PINSYSCALL(SYS_sigprocmask, 98b)
 	 ldi	SYS_sigprocmask, %t1
 	ldw	HPPA_FRAME_ERP(%sr0,%sp), %rp
 

lib/libc/arch/hppa/sys/Ovfork.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: Ovfork.S,v 1.15 2016/05/07 19:05:21 guenther Exp $	*/
+/*	$OpenBSD: Ovfork.S,v 1.16 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*
  * Copyright (c) 1999,2002 Michael Shalayeff
@@ -32,8 +32,9 @@ SYSENTRY_HIDDEN(vfork)
 	.import errno, data
 	copy	rp, t4
 	ldil	L%SYSCALLGATE, r1
-	ble	4(sr7, r1)
+99:	ble	4(sr7, r1)
-	ldi	__CONCAT(SYS_,vfork), t1
+	PINSYSCALL(__CONCAT(SYS_,vfork), 99b)
+	 ldi	__CONCAT(SYS_,vfork), t1
 	comb,=	r0, t1, 1f
 	copy	t4, rp
 	/* set errno */

lib/libc/arch/i386/DEFS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: DEFS.h,v 1.3 2017/11/29 05:13:57 guenther Exp $ */
+/*	$OpenBSD: DEFS.h,v 1.4 2023/12/10 16:45:51 deraadt Exp $ */
 /*
  * Copyright (c) 2017 Philip Guenther <guenther@openbsd.org>
  *
@@ -47,3 +47,9 @@
 #else
 #define	END_BUILTIN(x)	END_STRONG(x)
 #endif
+
+#define PINSYSCALL(sysno, label)					\
+	.pushsection .openbsd.syscalls,"",@progbits;			\
+	.long label;							\
+	.long sysno;							\
+	.popsection;

lib/libc/arch/i386/SYS.h

@@ -29,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$OpenBSD: SYS.h,v 1.27 2017/11/29 05:13:57 guenther Exp $
+ *	$OpenBSD: SYS.h,v 1.28 2023/12/10 16:45:51 deraadt Exp $
  */
 
 #include "DEFS.h"
@@ -59,7 +59,9 @@
 
 #define	__DO_SYSCALL(x)					\
 			movl $(SYS_ ## x),%eax;		\
-			int $0x80
+		97:	int $0x80;			\
+			PINSYSCALL(SYS_ ## x, 97b)
+
 
 #define SET_ERRNO()					\
 	movl	%eax,%gs:(TCB_OFFSET_ERRNO);		\

lib/libc/arch/i386/gen/setjmp.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: setjmp.S,v 1.14 2020/12/13 21:21:32 bluhm Exp $ */
+/* $OpenBSD: setjmp.S,v 1.15 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -59,7 +59,8 @@ ENTRY(setjmp)
 	pushl	$1			/* how = SIG_BLOCK */
 	call	1f
 1:	movl	$(SYS_sigprocmask),%eax
-	int	$0x80			/* leave oset in %eax */
+99:	int	$0x80			/* leave oset in %eax */
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	popl	%edx
 	addl	$8,%esp
 	addl	$__jmpxor-1b,%edx	# load cookie address
@@ -89,7 +90,8 @@ ENTRY(longjmp)
 	pushl	$3			/* how = SIG_SETMASK */
 	call	1f			/* get our eip */
 1:	movl	$(SYS_sigprocmask),%eax
-	int	$0x80
+98:	int	$0x80
+	PINSYSCALL(SYS_sigprocmask, 98b)
 	popl	%ecx
 	addl	$8,%esp
 	addl	$__jmpxor-1b,%ecx	# load cookie address

lib/libc/arch/i386/gen/sigsetjmp.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: sigsetjmp.S,v 1.13 2020/12/13 21:21:32 bluhm Exp $ */
+/* $OpenBSD: sigsetjmp.S,v 1.14 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -47,7 +47,8 @@ ENTRY(sigsetjmp)
 	pushl	$1			/* how = SIG_BLOCK */
 	subl	$4,%esp
 	movl	$(SYS_sigprocmask),%eax
-	int	$0x80			/* leave oset in %eax */
+99:	int	$0x80			/* leave oset in %eax */
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	addl	$12,%esp
 	movl	%eax,(_JB_SIGMASK * 4)(%ecx)
 
@@ -81,7 +82,8 @@ ENTRY(siglongjmp)
 	pushl	$3			/* how = SIG_SETMASK */
 	subl	$4,%esp
 	movl	$(SYS_sigprocmask),%eax
-	int	$0x80
+98:	int	$0x80
+	PINSYSCALL(SYS_sigprocmask, 98b)
 	addl	$12,%esp
 
 1:	call	2f

lib/libc/arch/i386/sys/Ovfork.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: Ovfork.S,v 1.10 2016/05/07 19:05:21 guenther Exp $ */
+/*	$OpenBSD: Ovfork.S,v 1.11 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -36,7 +36,8 @@
 SYSENTRY_HIDDEN(vfork)
 	popl	%ecx		/* my rta into ecx */
 	movl	$(SYS_vfork),%eax
-	int	$0x80
+99:	int	$0x80
+	PINSYSCALL(SYS_vfork, 99b)
 	HANDLE_ERRNO()
 	jmp	*%ecx
 SYSCALL_END_HIDDEN(vfork)

lib/libc/arch/i386/sys/brk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: brk.S,v 1.15 2022/12/04 08:22:13 tb Exp $ */
+/*	$OpenBSD: brk.S,v 1.16 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -54,7 +54,8 @@ ENTRY_NB(brk)
 	movl	%ecx,4(%esp)
 1:
 	movl	$(SYS_break),%eax
-	int	$0x80
+99:	int	$0x80
+	PINSYSCALL(SYS_break, 99b)
 	jc	2f
 	PIC_PROLOGUE
 	movl	PIC_GOT(__curbrk),%edx	# set up GOT addressing
@@ -71,7 +72,8 @@ ENTRY_NB(brk)
 	movl	%ecx,4(%esp)
 1:
 	movl	$(SYS_break),%eax
-	int	$0x80
+98:	int	$0x80
+	PINSYSCALL(SYS_break, 98b)
 	jc	2f
 	xorl	%eax,%eax
 	movl	%ecx,__curbrk

lib/libc/arch/i386/sys/sbrk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sbrk.S,v 1.15 2022/12/04 08:22:13 tb Exp $ */
+/*	$OpenBSD: sbrk.S,v 1.16 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -51,7 +51,8 @@ ENTRY_NB(sbrk)
 	movl	(%edx),%eax
 	addl	%eax,4(%esp)
 	movl	$(SYS_break),%eax
-	int	$0x80
+99:	int	$0x80
+	PINSYSCALL(SYS_break, 99b)
 	jc	2f
 	PIC_PROLOGUE
 	movl	PIC_GOT(__curbrk),%edx
@@ -65,7 +66,8 @@ ENTRY_NB(sbrk)
 	movl	__curbrk,%eax
 	addl	%eax,4(%esp)
 	movl	$(SYS_break),%eax
-	int	$0x80
+98:	int	$0x80
+	PINSYSCALL(SYS_break, 98b)
 	jc	2f
 	movl	__curbrk,%eax
 	addl	%ecx,__curbrk

lib/libc/arch/i386/sys/sigprocmask.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigprocmask.S,v 1.12 2016/05/07 19:05:21 guenther Exp $ */
+/*	$OpenBSD: sigprocmask.S,v 1.13 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -43,7 +43,8 @@ SYSENTRY_HIDDEN(sigprocmask)
 1:	movl	(%ecx),%ecx		# fetch indirect  ...
 	movl	%ecx,8(%esp)		# to new mask arg
 2:	movl	$(SYS_sigprocmask),%eax
-	int	$0x80
+99:	int	$0x80
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	jc	1f
 	movl	12(%esp),%ecx		# fetch old mask requested
 	testl	%ecx,%ecx		# test if old mask requested

lib/libc/arch/i386/sys/sigsuspend.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigsuspend.S,v 1.10 2016/05/07 19:05:21 guenther Exp $ */
+/*	$OpenBSD: sigsuspend.S,v 1.11 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -38,7 +38,8 @@ SYSENTRY_HIDDEN(sigsuspend)
 	movl	(%eax),%eax		# indirect to mask arg
 	movl	%eax,4(%esp)
 	movl	$(SYS_sigsuspend),%eax
-	int	$0x80
+99:	int	$0x80
+	PINSYSCALL(SYS_sigsuspend, 99b)
 	SET_ERRNO()
 	ret
 SYSCALL_END_HIDDEN(sigsuspend)

lib/libc/arch/i386/sys/tfork_thread.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: tfork_thread.S,v 1.10 2020/10/18 14:28:17 deraadt Exp $ */
+/*	$OpenBSD: tfork_thread.S,v 1.11 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
  * All rights reserved.
@@ -62,7 +62,8 @@ ENTRY(__tfork_thread)
 	pushl	8(%ebp)		# push param
 	pushl	$0		# slot for return address, ignored by kernel
 	movl	$SYS___tfork, %eax
-	int	$0x80
+99:	int	$0x80
+	PINSYSCALL(SYS___tfork, 99b)
 	jb 	2f
 
 	/*
@@ -98,7 +99,8 @@ ENTRY(__tfork_thread)
 	pushl	$0		# NULL pointer argument to __threxit
 	pushl	$0		# slot for return address, ignored by kernel
 	movl	$SYS___threxit, %eax
-	int	$0x80
+98:	int	$0x80
+	PINSYSCALL(SYS___threxit, 98b)
 	int3
 
 	/*

lib/libc/arch/m88k/DEFS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: DEFS.h,v 1.3 2016/09/22 18:19:59 guenther Exp $ */
+/*	$OpenBSD: DEFS.h,v 1.4 2023/12/10 16:45:51 deraadt Exp $ */
 
 #include <machine/asm.h>
 
@@ -23,3 +23,9 @@
  */
 #define	END_STRONG(x)	END(x); _HIDDEN_FALIAS(x,x); END(_HIDDEN(x))
 #define	END_WEAK(x)	END_STRONG(x); .weak x
+
+#define PINSYSCALL(sysno, label)					\
+	.pushsection .openbsd.syscalls,"",@progbits;			\
+	.long label;							\
+	.long sysno;							\
+	.popsection;

lib/libc/arch/m88k/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.25 2018/06/16 16:06:03 guenther Exp $*/
+/*	$OpenBSD: SYS.h,v 1.26 2023/12/10 16:45:51 deraadt Exp $*/
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -80,7 +80,8 @@
 
 #define	__DO_SYSCALL(x)							\
 	or %r13, %r0, __SYSCALLNAME(SYS_,x);				\
-	tb0 0, %r0, 450
+97:	tb0 0, %r0, 450;						\
+	PINSYSCALL(__SYSCALLNAME(SYS_,x), 97b)
 
 #define	__SYSCALL__NOERROR(p,x,y)					\
 	__ENTRY(p,x);							\

lib/libc/arch/m88k/sys/brk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: brk.S,v 1.14 2015/09/10 13:29:09 guenther Exp $	*/
+/*	$OpenBSD: brk.S,v 1.15 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -65,7 +65,8 @@ ENTRY(brk)
 1:
 	or	%r4,%r2,0
 	or	%r13,%r0,__SYSCALLNAME(SYS_,break)
-	tb0	0,%r0,450
+99:	tb0	0,%r0,450
+	PINSYSCALL(SYS_break, 99b)
 #ifdef __PIC__
 	br	9f
 #else

lib/libc/arch/m88k/sys/sbrk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sbrk.S,v 1.14 2015/09/10 13:29:09 guenther Exp $	*/
+/*	$OpenBSD: sbrk.S,v 1.15 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -64,7 +64,8 @@ ENTRY(sbrk)
 	add	%r2,%r2,%r5
 	or	%r4,%r2,0
 	or	%r13,%r0,SYS_break
-	tb0	0,%r0,450
+99:	tb0	0,%r0,450
+	PINSYSCALL(SYS_break, 99b)
 #ifdef __PIC__
 	br	9f
 #else

lib/libc/arch/m88k/sys/sigpending.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigpending.S,v 1.10 2015/09/10 13:29:09 guenther Exp $	*/
+/*	$OpenBSD: sigpending.S,v 1.11 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -38,7 +38,8 @@
 SYSENTRY(sigpending)
 	or	%r4,%r2,0		/* save r2 */
 	or	%r13,%r0,SYS_sigpending
-	tb0	0,%r0,450
+99:	tb0	0,%r0,450
+	PINSYSCALL(SYS_sigpending, 99b)
 	br	CERROR
 	st	%r2,%r4,0
 	jmp.n	%r1

lib/libc/arch/m88k/sys/sigprocmask.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigprocmask.S,v 1.12 2015/10/23 04:39:24 guenther Exp $	*/
+/*	$OpenBSD: sigprocmask.S,v 1.13 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -43,7 +43,8 @@ SYSENTRY_HIDDEN(sigprocmask)
 	ld	%r3,%r3,0		/* else load set from *set and do it */
 2:
 	or	%r13,%r0,SYS_sigprocmask
-	tb0	0,%r0,450
+99:	tb0	0,%r0,450
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	br	CERROR
 	bcnd	eq0,%r4,3f		/* if old mask not requested, done */
 	st	%r2,%r4,0		/* otherwise, set it */

lib/libc/arch/m88k/sys/sigsuspend.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigsuspend.S,v 1.13 2016/05/07 19:05:21 guenther Exp $	*/
+/*	$OpenBSD: sigsuspend.S,v 1.14 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -45,7 +45,8 @@
 SYSENTRY_HIDDEN(sigsuspend)
 	ld	%r2,%r2,0		/* dereference the pointer mask */
 	or	%r13,%r0,SYS_sigsuspend
-	tb0	0,%r0,450
+99:	tb0	0,%r0,450
+	PINSYSCALL(SYS_sigsuspend, 99b)
 	br	CERROR
 	jmp.n	%r1
 	 or	%r2,%r0,0

lib/libc/arch/m88k/sys/tfork_thread.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: tfork_thread.S,v 1.7 2020/11/07 02:52:08 aoyama Exp $	*/
+/*	$OpenBSD: tfork_thread.S,v 1.8 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005, Miodrag Vallat
@@ -34,7 +34,8 @@
  */
 ENTRY(__tfork_thread)
 	or	%r13, %r0,  __SYSCALLNAME(SYS_,__tfork)
-	tb0	0,    %r0,  450	/* corrupts r2 and r3 in the child */
+99:	tb0	0,    %r0,  450	/* corrupts r2 and r3 in the child */
+	PINSYSCALL(SYS___tfork, 99b)
 	br	CERROR
 
 	bcnd	eq0,  %r2,  1f
@@ -52,7 +53,8 @@ ENTRY(__tfork_thread)
 	 or	%r2,  %r5,  %r0	/* arg */
 
 	or	%r13, %r0,  __SYSCALLNAME(SYS_,__threxit)
-	tb0	0,    %r0,  450
+98:	tb0	0,    %r0,  450
+	PINSYSCALL(SYS___threxit, 98b)
 	NOP
 	tb0     0, %r0, 130	/* breakpoint */
 END(__tfork_thread)

lib/libc/arch/mips64/SYS.h

@@ -29,7 +29,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *      $OpenBSD: SYS.h,v 1.12 2016/05/07 19:05:22 guenther Exp $ 
+ *      $OpenBSD: SYS.h,v 1.13 2023/12/10 16:45:51 deraadt Exp $ 
  */
 
 #include <sys/syscall.h>
@@ -59,15 +59,16 @@
 			.size _HIDDEN(x), . - _HIDDEN(x)
 #define	END_WEAK(x)	END_STRONG(x); .weak x
 
-
 #define CERROR		__cerror
 	.hidden	CERROR
 
 # define __ENTRY(p,x)		ENTRY(p ## x)
 
-# define __DO_SYSCALL(x)				\
+# define __DO_SYSCALL(x)					\
-				li	v0,SYS_ ## x;	\
+				li	v0,SYS_ ## x;		\
-				syscall
+			97:	syscall;			\
+				PINSYSCALL(SYS_ ## x, 97b)	\
+
 
 # define __LEAF2(p,x,sz)	LEAF(p ## x, sz) \
 				WEAK_ALIAS(x, p ## x);
@@ -124,3 +125,8 @@
 #define	SYSCALL_END(x)		__END2(_thread_sys_,x)
 #define	SYSCALL_END_HIDDEN(x)	__END2_HIDDEN(_thread_sys_,x)
 
+#define PINSYSCALL(sysno, label)					\
+	.pushsection .openbsd.syscalls,"",@progbits;			\
+	.long label;							\
+	.long sysno;							\
+	.popsection;

lib/libc/arch/mips64/gen/setjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: setjmp.S,v 1.12 2018/01/08 16:44:32 visa Exp $ */
+/*	$OpenBSD: setjmp.S,v 1.13 2023/12/10 16:45:51 deraadt Exp $ */
 
 /*
  * Copyright (c) 2001-2002 Opsycon AB  (www.opsycon.se / www.opsycon.com)
@@ -60,7 +60,8 @@ LEAF(setjmp, FRAMESZ)
 	li	a0, 1				# how = SIG_BLOCK
 	move	a1, zero			# get current signal mask
 	li	v0, SYS_sigprocmask
-	syscall					# mask in v0
+99:	syscall				# mask in v0
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	bne	a3, zero, botch
 	REG_S	v0, _JB_MASK(a2)		# save sc_mask
 
@@ -132,7 +133,8 @@ LEAF(longjmp, FRAMESZ)
 	REG_L	a1, _JB_MASK(a2)		# load sc_mask
 	li	a0, 3				# how = SIG_SETMASK
 	li	v0, SYS_sigprocmask
-	syscall
+98:	syscall
+	PINSYSCALL(SYS_sigprocmask, 98b)
 	bne	a3, zero, botch
 
 	REG_L	v0, _JB_REGS+ZERO*REGSZ(a2)

lib/libc/arch/mips64/sys/brk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: brk.S,v 1.10 2022/12/08 01:25:43 guenther Exp $ */
+/*	$OpenBSD: brk.S,v 1.11 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -55,7 +55,8 @@ LEAF(brk, FRAMESZ)
 	move	a0, v0		# dont allow break < minbrk
 1:
 	li	v0, SYS_break
-	syscall
+99:	syscall
+	PINSYSCALL(SYS_break, 99b)
 	bne	a3, zero, 2f
 	PTR_S	a0, __curbrk
 	move	v0, zero

lib/libc/arch/mips64/sys/sbrk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sbrk.S,v 1.10 2022/12/08 01:25:43 guenther Exp $ */
+/*	$OpenBSD: sbrk.S,v 1.11 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -52,7 +52,8 @@ LEAF(sbrk, FRAMESZ)
 	PTR_L	v1, __curbrk
 	li	v0, SYS_break
 	PTR_ADDU a0, a0, v1	# compute current break
-	syscall
+99:	syscall
+	PINSYSCALL(SYS_break, 99b)
 
 	bne	a3, zero, 1f
 	move	v0, v1		# return old val of curbrk from above

lib/libc/arch/mips64/sys/sigpending.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigpending.S,v 1.7 2015/10/23 04:39:24 guenther Exp $ */
+/*	$OpenBSD: sigpending.S,v 1.8 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -41,7 +41,8 @@ SYSLEAF(sigpending, FRAMESZ)
 	SETUP_GP64(GPOFF, _HIDDEN(sigpending))
 	.set	reorder
 	li	v0, SYS_sigpending
-	syscall
+99:	syscall
+	PINSYSCALL(SYS_sigpending, 99b)
 	bne	a3, zero, 1f
 	sw	v0, 0(a0)
 	move	v0, zero

lib/libc/arch/mips64/sys/sigprocmask.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigprocmask.S,v 1.7 2015/10/23 04:39:24 guenther Exp $ */
+/*	$OpenBSD: sigprocmask.S,v 1.8 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -47,7 +47,8 @@ SYSLEAF_HIDDEN(sigprocmask, FRAMESZ)
 	lw	a1, 0(a1)		# indirect to new mask arg
 .Ldoit:
 	li	v0, SYS_sigprocmask
-	syscall
+99:	syscall
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	bne	a3, zero, .Lerr
 	beq	a2, zero, .Lout		# test if old mask requested
 	sw	v0, 0(a2)		# store old mask

lib/libc/arch/mips64/sys/sigsuspend.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigsuspend.S,v 1.7 2016/05/07 19:05:22 guenther Exp $ */
+/*	$OpenBSD: sigsuspend.S,v 1.8 2023/12/10 16:45:51 deraadt Exp $ */
 /*-
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -42,7 +42,8 @@ SYSLEAF_HIDDEN(sigsuspend, FRAMESZ)
 	.set	reorder
 	lw	a0, 0(a0)		# indirect to mask arg
 	li	v0, SYS_sigsuspend
-	syscall
+99:	syscall
+	PINSYSCALL(SYS_sigsuspend, 99b)
 	bne	a3, zero, 1f
 	move	v0, zero		# should not happen
 	RESTORE_GP64

lib/libc/arch/powerpc/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.27 2023/02/11 06:10:39 guenther Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.28 2023/12/10 16:45:51 deraadt Exp $	*/
 /*-
  * Copyright (c) 1994
  *	Andrew Cagney.  All rights reserved.
@@ -64,7 +64,8 @@
 #define	PSEUDO_NOERROR(x,y)	SYSENTRY(x)				\
 				RETGUARD_SETUP(x, %r11, %r12);		\
 				li	%r0, SYS_ ## y ;		\
-				sc;					\
+			97:	sc;					\
+				PINSYSCALL(SYS_ ## y, 97b);		\
 				RETGUARD_CHECK(x, %r11, %r12);		\
 				blr;					\
 				__END(x)
@@ -72,7 +73,8 @@
 #define	PSEUDO_HIDDEN(x,y)	SYSENTRY_HIDDEN(x)			\
 				RETGUARD_SETUP(x, %r11, %r12);		\
 				li	%r0, SYS_ ## y;			\
-				sc;					\
+			97:	sc;					\
+				PINSYSCALL(SYS_ ## y, 97b);		\
 				cmpwi	%r0, 0;				\
 				beq+	.L_ret;				\
 				stw	%r0, R2_OFFSET_ERRNO(2);	\

lib/libc/arch/powerpc/gen/setjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: setjmp.S,v 1.14 2022/06/10 01:56:02 guenther Exp $ */
+/*	$OpenBSD: setjmp.S,v 1.15 2023/12/10 16:45:51 deraadt Exp $ */
 /*
  * Copyright (c) 1996 Dale Rahn. All rights reserved.
  *
@@ -68,7 +68,9 @@ ENTRY(setjmp)
 	li	3, 1			/* how = SIG_BLOCK */
 	li	4, 0			/* oset = empty */
 	li	0, SYS_sigprocmask
-	sc
+99:	sc
+	PINSYSCALL(SYS_sigprocmask, 99b)
+
 	stw	3, JMP_sig(5)
 	mr	3, 5
 ENTRY(_setjmp)
@@ -125,7 +127,8 @@ ENTRY(longjmp)
 	li	3, 3			/* how = SIG_SETMASK */
 	lwz	4, JMP_sig(5)		/* oset from the jmpbuf */
 	li	0, SYS_sigprocmask
-	sc
+98:	sc
+	PINSYSCALL(SYS_sigprocmask, 98b)
 	mr	3, 5			/* restore jmpbuf and val to r3,r4 */
 	mr	4, 6
 

lib/libc/arch/powerpc/gen/sigsetjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigsetjmp.S,v 1.8 2022/06/10 01:56:02 guenther Exp $ */
+/*	$OpenBSD: sigsetjmp.S,v 1.9 2023/12/10 16:45:51 deraadt Exp $ */
 /*
  * Copyright (c) 1996 Dale Rahn. All rights reserved.
  *
@@ -63,7 +63,8 @@ ENTRY(sigsetjmp)
 	li	3, 1			/* how = SIG_BLOCK */
 	li	4, 0			/* oset = empty */
 	li	0, SYS_sigprocmask
-	sc
+99:	sc
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	stw	3, JMP_sigmask(5)
 1:	mflr	6
 	bcl	20, 31, 2f
@@ -122,7 +123,8 @@ ENTRY(siglongjmp)
 	li	3, 3			/* how = SIG_SETMASK */
 	lwz	4, JMP_sigmask(5)	/* oset from the jmpbuf */
 	li	0, SYS_sigprocmask
-	sc
+98:	sc
+	PINSYSCALL(SYS_sigprocmask, 98b)
 
 1:	bcl	20, 31, 2f
 2:	mflr	9

lib/libc/arch/powerpc/sys/brk.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: brk.S,v 1.18 2022/12/08 01:25:43 guenther Exp $ */
+/* $OpenBSD: brk.S,v 1.19 2023/12/10 16:45:51 deraadt Exp $ */
 
 /*
  * Copyright (c) 1996 Dale Rahn
@@ -60,7 +60,8 @@ ENTRY_NB(brk)
 #endif
 
 	li	0, SYS_break
-	sc
+99:	sc
+	PINSYSCALL(SYS_break, 99b)
 
 	/* check for error */
 	cmpwi	0, 0

lib/libc/arch/powerpc/sys/sbrk.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: sbrk.S,v 1.17 2022/12/08 01:25:43 guenther Exp $ */
+/* $OpenBSD: sbrk.S,v 1.18 2023/12/10 16:45:51 deraadt Exp $ */
 
 /*
  * Copyright (c) 1996 Dale Rahn
@@ -57,7 +57,8 @@ ENTRY_NB(sbrk)
 	mr	7, 3
 
 	li	0, SYS_break
-	sc
+99:	sc
+	PINSYSCALL(SYS_break, 99b)
 
 	/* check for error */
 	cmpwi	0, 0

lib/libc/arch/powerpc/sys/sigpending.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: sigpending.S,v 1.8 2020/11/28 19:49:30 gkoehler Exp $ */
+/* $OpenBSD: sigpending.S,v 1.9 2023/12/10 16:45:51 deraadt Exp $ */
 /*
  * Copyright (c) 2012 Mark Kettenis
  *
@@ -24,7 +24,8 @@ SYSENTRY(sigpending)
 	RETGUARD_SETUP(sigpending, %r11, %r12)
 	mr	%r5, %r3
 	li	%r0, SYS_sigpending
-	sc
+99:	sc
+	PINSYSCALL(SYS_sigpending, 99b)
 	stw	%r3, 0(%r5)
 	li	%r3, 0
 	RETGUARD_CHECK(sigpending, %r11, %r12)

lib/libc/arch/powerpc/sys/sigprocmask.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: sigprocmask.S,v 1.14 2020/11/28 19:49:30 gkoehler Exp $ */
+/* $OpenBSD: sigprocmask.S,v 1.15 2023/12/10 16:45:51 deraadt Exp $ */
 
 /*
  * Copyright (c) 1996 Dale Rahn
@@ -46,8 +46,9 @@ SYSENTRY_HIDDEN(sigprocmask)
 .L_do_call:
 
 	li	0, SYS_sigprocmask
-	sc
+99:	sc
-	
+	PINSYSCALL(SYS_sigprocmask, 99b)
+
 	/* didnt work? */
 	cmpwi	0, 0
 	beq+	.L_sigprocmask_ok

lib/libc/arch/powerpc/sys/sigsuspend.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: sigsuspend.S,v 1.7 2020/11/28 19:49:30 gkoehler Exp $ */
+/* $OpenBSD: sigsuspend.S,v 1.8 2023/12/10 16:45:51 deraadt Exp $ */
 
 /*
  * Copyright (c) 1996 Dale Rahn
@@ -35,7 +35,8 @@ SYSENTRY_HIDDEN(sigsuspend)
 	li	%r0, SYS_sigsuspend
 
 	lwz	%r3, 0(%r3)		/* load the mask */
-	sc
+99:	sc
+	PINSYSCALL(SYS_sigsuspend, 99b)
 
 	cmpwi	%r0, 0
 	beq+	.L_ret

lib/libc/arch/powerpc/sys/tfork_thread.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: tfork_thread.S,v 1.10 2020/11/28 19:49:30 gkoehler Exp $	*/
+/*	$OpenBSD: tfork_thread.S,v 1.11 2023/12/10 16:45:51 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005 Tim Wiess <tim@nop.cx>
@@ -22,7 +22,8 @@ ENTRY(__tfork_thread)
 	RETGUARD_SETUP(__tfork_thread, %r11, %r12)
 	/* call __tfork */
 	li	%r0, SYS___tfork
-	sc
+99:	sc
+	PINSYSCALL(SYS___tfork, 99b)
 	cmpwi	%r0, 0
 	bne	1f
 	
@@ -38,7 +39,8 @@ ENTRY(__tfork_thread)
 	
 	/* child returned, call __threxit */
 	li	%r0, SYS___threxit
-	sc
+98:	sc
+	PINSYSCALL(SYS___threxit, 98b)
 	.long	0		/* illegal */
 
 1:

lib/libc/arch/powerpc64/DEFS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: DEFS.h,v 1.1 2020/06/25 01:59:27 drahn Exp $	*/
+/*	$OpenBSD: DEFS.h,v 1.2 2023/12/10 16:45:52 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -67,3 +67,9 @@
 #else
 #define END_BUILTIN(x)	END_STRONG(x)
 #endif
+
+#define PINSYSCALL(sysno, label)					\
+	.pushsection .openbsd.syscalls,"",@progbits;			\
+	.long label;							\
+	.long sysno;							\
+	.popsection;

lib/libc/arch/powerpc64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.5 2022/12/07 23:25:59 guenther Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.6 2023/12/10 16:45:52 deraadt Exp $	*/
 /*-
  * Copyright (c) 1994
  *	Andrew Cagney.  All rights reserved.
@@ -69,7 +69,8 @@
 				ENTRY(_thread_sys_ ## x) \
 				RETGUARD_SETUP(_thread_sys_ ## x, %r11); \
 				li %r0, SYS_ ## y ; \
-				sc ; \
+			97:	sc ; \
+				PINSYSCALL(SYS_ ## y, 97b); \
 				RETGUARD_CHECK(_thread_sys_ ## x, %r11); \
 				blr; \
 				__END(_thread_sys_,x)
@@ -77,7 +78,8 @@
 #define PSEUDO_HIDDEN(x,y) 	ENTRY(_thread_sys_ ## x) \
 				RETGUARD_SETUP(_thread_sys_ ## x, %r11); \
 				li %r0, SYS_ ## y ; \
-				sc ; \
+			97:	sc ; \
+				PINSYSCALL(SYS_ ## y, 97b); \
 				cmpwi %r0, 0 ; \
 				beq .L_ret ; \
 				stw	%r0, R13_OFFSET_ERRNO(%r13); \

lib/libc/arch/powerpc64/gen/setjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: setjmp.S,v 1.4 2020/10/18 17:51:39 mortimer Exp $ */
+/*	$OpenBSD: setjmp.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $ */
 /*
  * Copyright (c) 2020 Dale Rahn. All rights reserved.
  *
@@ -70,7 +70,8 @@ ENTRY(setjmp)
 	li	%r3, 1			/* how = SIG_BLOCK */
 	li	%r4, 0			/* oset = empty */
 	li	%r0, SYS_sigprocmask
-	sc
+99:	sc
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	std	%r3, JMP_sig(%r5)
 	b	1f
 	nop
@@ -130,7 +131,8 @@ ENTRY(longjmp)
 	li	%r3, 3			/* how = SIG_SETMASK */
 	ld	%r4, JMP_sig(%r5)	/* oset from the jmpbuf */
 	li	%r0, SYS_sigprocmask
-	sc
+98:	sc
+	PINSYSCALL(SYS_sigprocmask, 98b)
 	nop
 	b	1f
 	nop

lib/libc/arch/powerpc64/gen/sigsetjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigsetjmp.S,v 1.3 2020/10/19 23:24:17 mortimer Exp $ */
+/*	$OpenBSD: sigsetjmp.S,v 1.4 2023/12/10 16:45:52 deraadt Exp $ */
 /*
  * Copyright (c) 2020 Dale Rahn. All rights reserved.
  *
@@ -67,7 +67,8 @@ ENTRY(sigsetjmp)
 	li	%r3, 1			/* how = SIG_BLOCK */
 	li	%r4, 0			/* oset = empty */
 	li	%r0, SYS_sigprocmask
-	sc
+99:	sc
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	nop
 	std	%r3, JMP_sigmask(5)
 1:
@@ -126,7 +127,8 @@ ENTRY(siglongjmp)
 	li	%r3, 3			/* how = SIG_SETMASK */
 	ld	%r4, JMP_sigmask(%r5)	/* oset from the jmpbuf */
 	li	%r0, SYS_sigprocmask
-	sc
+98:	sc
+	PINSYSCALL(SYS_sigprocmask, 98b)
 1:
 	addis	%r9, %r2, __jmpxor@toc@ha
 	addi	%r9, %r9, __jmpxor@toc@l

lib/libc/arch/powerpc64/sys/brk.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: brk.S,v 1.5 2022/12/07 23:25:59 guenther Exp $ */
+/* $OpenBSD: brk.S,v 1.6 2023/12/10 16:45:52 deraadt Exp $ */
 
 /*
  * Copyright (c) 1996 Dale Rahn
@@ -50,7 +50,8 @@ SYSENTRY(brk)
 	addi	%r6, %r6, __curbrk@toc@l	/* # %r6 = &__curbrk */
 
 	li %r0, SYS_break
-	sc
+99:	sc
+	PINSYSCALL(SYS_break, 99b)
 
 	/* check for error */
 	cmpwi	%r0, 0

lib/libc/arch/powerpc64/sys/sbrk.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: sbrk.S,v 1.4 2020/10/16 23:42:16 deraadt Exp $ */
+/* $OpenBSD: sbrk.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $ */
 
 /*
  * Copyright (c) 1996 Dale Rahn
@@ -51,7 +51,8 @@ SYSENTRY(sbrk)
 	mr	%r7, %r3
 
 	li %r0, SYS_break
-	sc
+99:	sc
+	PINSYSCALL(SYS_break, 99b)
 
 	/* check for error */
 	cmpwi	%r0, 0

lib/libc/arch/powerpc64/sys/sigpending.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: sigpending.S,v 1.2 2020/10/16 23:42:16 deraadt Exp $ */
+/* $OpenBSD: sigpending.S,v 1.3 2023/12/10 16:45:52 deraadt Exp $ */
 /*
  * Copyright (c) 2012 Mark Kettenis
  *
@@ -25,7 +25,8 @@ SYSENTRY(sigpending)
 	li	%r0, SYS_sigpending
 
 	mr	%r5, %r3
-	sc
+99:	sc
+	PINSYSCALL(SYS_sigpending, 99b)
 	stw	%r3, 0(%r5)
 	li	%r3, 0
 	RETGUARD_CHECK(sigpending, %r11)

lib/libc/arch/powerpc64/sys/sigprocmask.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: sigprocmask.S,v 1.4 2020/10/16 23:42:16 deraadt Exp $ */
+/* $OpenBSD: sigprocmask.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $ */
 
 /*
  * Copyright (c) 1996 Dale Rahn
@@ -47,7 +47,8 @@ SYSENTRY_HIDDEN(sigprocmask)
 	lwz	%r4, 0(%r4)	/* get new mask */
 .L_do_call:
 	
-	sc
+99:	sc
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	
 	/* didnt work? */
 	cmpwi	%r0, 0

lib/libc/arch/powerpc64/sys/sigsuspend.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: sigsuspend.S,v 1.3 2020/10/16 23:42:16 deraadt Exp $ */
+/* $OpenBSD: sigsuspend.S,v 1.4 2023/12/10 16:45:52 deraadt Exp $ */
 
 /*
  * Copyright (c) 1996 Dale Rahn <drahn@openbsd.org>
@@ -35,7 +35,8 @@ SYSENTRY(sigsuspend)
 	li	%r0, SYS_sigsuspend
 
 	lwz %r3, 0(%r3)		/* load the mask */
-	sc
+99:	sc
+	PINSYSCALL(SYS_sigsuspend, 99b)
 
 	cmpwi	%r0, 0
 	beq	.L_ret

lib/libc/arch/powerpc64/sys/tfork_thread.S

@@ -1,4 +1,4 @@
-/* $OpenBSD: tfork_thread.S,v 1.4 2020/10/19 14:15:29 deraadt Exp $ */
+/* $OpenBSD: tfork_thread.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $ */
 
 /*
  * Copyright (c) 2005 Tim Wiess <tim@nop.cx>
@@ -22,7 +22,8 @@ ENTRY(__tfork_thread)
 	RETGUARD_SETUP(__tfork_thread, %r11)
 
 	li	%r0, SYS___tfork
-	sc
+99:	sc
+	PINSYSCALL(SYS___tfork, 99b)
 	cmpwi	%r0, 0
 	bne	1f
 	
@@ -39,7 +40,8 @@ ENTRY(__tfork_thread)
 	
 	/* child returned, call __threxit */
 	li	%r0, SYS___threxit
-	sc
+98:	sc
+	PINSYSCALL(SYS___threxit, 98b)
 	.long	0		/* illegal */
 1:
 	stw	%r0, R13_OFFSET_ERRNO(%r13)

lib/libc/arch/riscv64/DEFS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: DEFS.h,v 1.1 2021/04/29 18:39:53 drahn Exp $	*/
+/*	$OpenBSD: DEFS.h,v 1.2 2023/12/10 16:45:52 deraadt Exp $	*/
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -58,3 +58,8 @@
 #define	END_STRONG(x)	END(x); _HIDDEN_FALIAS(x,x); END(_HIDDEN(x))
 #define	END_WEAK(x)	END_STRONG(x); .weak x
 
+#define PINSYSCALL(sysno, label)					\
+	.pushsection .openbsd.syscalls,"",@progbits;			\
+	.long label;							\
+	.long sysno;							\
+	.popsection;

lib/libc/arch/riscv64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.4 2022/12/02 12:27:08 jca Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.5 2023/12/10 16:45:52 deraadt Exp $	*/
 /*-
  * Copyright (c) 2020 Brian Bamsch <bbamsch@google.com>
  * Copyright (c) 1990 The Regents of the University of California.
@@ -56,9 +56,10 @@
 #define __END(x)					\
 	__END_HIDDEN(x); END(x)
 
-#define SYSTRAP(x) \
+#define SYSTRAP(x)					\
-	li	t0, SYS_ ## x;		\
+	li	t0, SYS_ ## x;				\
-	ecall
+97:	ecall;						\
+	PINSYSCALL(SYS_ ## x, 97b)
 
 #define HANDLE_ERROR()							\
 	beqz	t0, 200f;						\

lib/libc/arch/riscv64/sys/brk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: brk.S,v 1.4 2022/12/03 15:02:30 jca Exp $	*/
+/*	$OpenBSD: brk.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $	*/
 /*
  * Copyright (c) 2021 Dale Rahn <drahn@openbsd.org>
  *
@@ -38,7 +38,8 @@ ENTRY_NB(brk)
 	lla	t1, __curbrk
 
 	li t0, SYS_break
-	ecall
+99:	ecall
+	PINSYSCALL(SYS_break, 99b)
 
 	/* check for error */
 	beqz	t0, .L_brk_ok

lib/libc/arch/sh/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.13 2023/02/11 06:10:39 guenther Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.14 2023/12/10 16:45:52 deraadt Exp $	*/
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -85,6 +85,12 @@
 #define	__END(x)					\
 	__END_HIDDEN(x); SET_ENTRY_SIZE(x)
 
+#define PINSYSCALL(sysno, label)					\
+	.pushsection .openbsd.syscalls,"",@progbits;			\
+	.long label;							\
+	.long sysno;							\
+	.popsection;
+
 #ifdef __ASSEMBLER__
 /*
  * If the system call number fits in a 8-bit signed value (i.e. fits in 7 bits),
@@ -94,10 +100,12 @@
 .macro systrap num
 .iflt \num - 128
 	mov	# \num, r0
-	trapa	#0x80
+97:	trapa	#0x80
+	PINSYSCALL(\num, 97b)
 .else
 	mov.l	903f, r0
-	trapa	#0x80
+97:	trapa	#0x80
+	PINSYSCALL(\num, 97b)
 	bra	904f
 	 nop
 	.align	2

lib/libc/arch/sh/sys/brk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: brk.S,v 1.8 2022/12/08 02:11:27 guenther Exp $	*/
+/*	$OpenBSD: brk.S,v 1.9 2023/12/10 16:45:52 deraadt Exp $	*/
 /*	$NetBSD: brk.S,v 1.10 2006/01/06 03:58:31 uwe Exp $	*/
 
 /*-
@@ -69,7 +69,8 @@ ENTRY(brk)
 #else
 	mov	#SYS_break, r0
 #endif
-	trapa	#0x80
+99:	trapa	#0x80
+	PINSYSCALL(SYS_break, 99b)
 	bf	2f
 #ifdef __PIC__
 	mov.l	Lcurbrk, r0

lib/libc/arch/sh/sys/sbrk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sbrk.S,v 1.8 2022/12/08 02:11:27 guenther Exp $	*/
+/*	$OpenBSD: sbrk.S,v 1.9 2023/12/10 16:45:52 deraadt Exp $	*/
 /*	$NetBSD: sbrk.S,v 1.9 2006/01/06 03:58:31 uwe Exp $	*/
 
 /*-
@@ -69,7 +69,8 @@ ENTRY(sbrk)
 #else
 	mov	#SYS_break, r0
 #endif
-	trapa	#0x80
+99:	trapa	#0x80
+	PINSYSCALL(SYS_break, 99b)
 	bf	1f
 #ifdef __PIC__
 	mov.l	Lcurbrk, r0

lib/libc/arch/sh/sys/sigprocmask.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigprocmask.S,v 1.6 2022/09/02 06:19:04 miod Exp $	*/
+/*	$OpenBSD: sigprocmask.S,v 1.7 2023/12/10 16:45:52 deraadt Exp $	*/
 /*	$NetBSD: sigprocmask.S,v 1.6 2003/08/07 16:42:21 agc Exp $	*/
 
 /*-
@@ -52,7 +52,8 @@ SYSENTRY_HIDDEN(sigprocmask)
 #else
 	mov	#SYS_sigprocmask, r0
 #endif
-	trapa	#0x80
+99:	trapa	#0x80
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	bf	4f
 	mov	r6, r2			/* fetch old mask requested */
 	tst	r2, r2			/* test if old mask requested */

lib/libc/arch/sh/sys/sigsuspend.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigsuspend.S,v 1.5 2022/09/02 06:19:04 miod Exp $	*/
+/*	$OpenBSD: sigsuspend.S,v 1.6 2023/12/10 16:45:52 deraadt Exp $	*/
 /*	$NetBSD: sigsuspend.S,v 1.5 2003/08/07 16:42:21 agc Exp $	*/
 
 /*-
@@ -46,7 +46,8 @@ SYSENTRY_HIDDEN(sigsuspend)
 #else
 	mov	#SYS_sigsuspend, r0
 #endif
-	trapa	#0x80
+99:	trapa	#0x80
+	PINSYSCALL(SYS_sigsuspend, 99b)
 	SET_ERRNO_AND_RETURN
 
 	.align	2

lib/libc/arch/sh/sys/tfork_thread.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: tfork_thread.S,v 1.4 2022/09/02 06:19:04 miod Exp $	*/
+/*	$OpenBSD: tfork_thread.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2007 Miodrag Vallat.
@@ -29,7 +29,8 @@ ENTRY(__tfork_thread)
 #else
 	mov	#SYS___tfork, r0
 #endif
-	trapa	#0x80
+99:	trapa	#0x80
+	PINSYSCALL(SYS___tfork, 99b)
 	bf	9f
 
 	tst	r0, r0
@@ -53,7 +54,8 @@ ENTRY(__tfork_thread)
 #else
 	mov	#SYS___threxit, r0
 #endif
-	trapa	#0x80
+98:	trapa	#0x80
+	PINSYSCALL(SYS___threxit, 98b)
 
 9:
 	/*

lib/libc/arch/sparc64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.17 2022/01/01 23:47:14 guenther Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.18 2023/12/10 16:45:52 deraadt Exp $	*/
 /*-
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -49,8 +49,8 @@
 #define	__ENTRY(p,x)		ENTRY(_CAT(p,x)) ; .weak x; x = _CAT(p,x)
 #define	__ENTRY_HIDDEN(p,x)	ENTRY(_CAT(p,x))
 
-#define __END_HIDDEN(p,x)	END(_CAT(p,x));				\
+#define __END_HIDDEN(p,x)	END(_CAT(p,x));			\
-				_HIDDEN_FALIAS(x, _CAT(p,x));		\
+				_HIDDEN_FALIAS(x, _CAT(p,x));	\
 				END(_HIDDEN(x))
 #define __END(p,x)		__END_HIDDEN(p,x); END(x)
 
@@ -67,15 +67,30 @@
  * Note that it adds a `nop' over what we could do, if we only knew what
  * came at label 1....
  */
-#define	_SYSCALL(p,x,y) \
+#define	_SYSCALL(p,x,y)						\
-	__ENTRY(p,x); mov _CAT(SYS_,y),%g1; t ST_SYSCALL; bcc 1f; nop; ERROR(); 1:
+	__ENTRY(p,x);						\
-#define	_SYSCALL_HIDDEN(p,x,y) \
+	mov _CAT(SYS_,y),%g1;					\
-	__ENTRY_HIDDEN(p,x); mov _CAT(SYS_,y),%g1; t ST_SYSCALL; bcc 1f; nop; ERROR(); 1:
+97:	t ST_SYSCALL;						\
+	PINSYSCALL(_CAT(SYS_,y), 97b);				\
+	bcc 1f;							\
+	nop;							\
+	ERROR();						\
+1:
 
-#define	__SYSCALL(p,x) \
+#define	_SYSCALL_HIDDEN(p,x,y)					\
+	__ENTRY_HIDDEN(p,x);					\
+	mov _CAT(SYS_,y),%g1;					\
+97:	t ST_SYSCALL;						\
+	PINSYSCALL(_CAT(SYS_,y), 97b);				\
+	bcc 1f;							\
+	nop;							\
+	ERROR();						\
+1:
+
+#define	__SYSCALL(p,x)						\
 	_SYSCALL(p,x,x)
 
-#define	__SYSCALL_HIDDEN(p,x) \
+#define	__SYSCALL_HIDDEN(p,x)					\
 	_SYSCALL_HIDDEN(p,x,x)
 
 /*
@@ -83,19 +98,34 @@
  * we use the SYSCALL_G2RFLAG to put the `success' return address in %g2
  * and avoid a branch.
  */
-#define	__RSYSCALL(p,x) \
+#define	__RSYSCALL(p,x)						\
-	__ENTRY(p,x); mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1; \
+	__ENTRY(p,x);						\
-	add %o7,8,%g2; t ST_SYSCALL; ERROR(); __END(p,x)
+	mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1;			\
-#define	__RSYSCALL_HIDDEN(p,x) \
+	add %o7,8,%g2;						\
-	__ENTRY_HIDDEN(p,x); mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1; \
+97:	t ST_SYSCALL;						\
-	add %o7,8,%g2; t ST_SYSCALL; ERROR(); __END_HIDDEN(p,x)
+	PINSYSCALL(_CAT(SYS_,x), 97b);				\
+	ERROR();						\
+	__END(p,x)
+#define	__RSYSCALL_HIDDEN(p,x)					\
+	__ENTRY_HIDDEN(p,x);					\
+	mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1;			\
+	add %o7,8,%g2;						\
+97:	t ST_SYSCALL;						\
+	PINSYSCALL(_CAT(SYS_,x), 97b);				\
+	ERROR();						\
+	__END_HIDDEN(p,x)
 
 /*
  * PSEUDO(x,y) is like RSYSCALL(y) except that the name is x.
  */
-#define	__PSEUDO(p,x,y) \
+#define	__PSEUDO(p,x,y)						\
-	__ENTRY(p,x); mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
+	__ENTRY(p,x);						\
-	t ST_SYSCALL; ERROR(); __END(p,x)
+	mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1;			\
+	add %o7,8,%g2;						\
+97:	t ST_SYSCALL;						\
+	PINSYSCALL(_CAT(SYS_,y), 97b);				\
+	ERROR();						\
+	__END(p,x)
 
 /*
  * SYSCALL_NOERROR is like SYSCALL, except it's used for syscalls 
@@ -103,8 +133,11 @@
  *
  * XXX - This should be optimized.
  */
-#define __SYSCALL_NOERROR(p,x) \
+#define __SYSCALL_NOERROR(p,x)					\
-	__ENTRY(p,x); mov _CAT(SYS_,x),%g1; t ST_SYSCALL
+	__ENTRY(p,x);						\
+	mov _CAT(SYS_,x),%g1;					\
+97:	t ST_SYSCALL;						\
+	PINSYSCALL(_CAT(SYS_,x), 97b)
 
 /*
  * RSYSCALL_NOERROR is like RSYSCALL, except it's used for syscalls 
@@ -112,16 +145,24 @@
  *
  * XXX - This should be optimized.
  */
-#define __RSYSCALL_NOERROR(p,x) \
+#define __RSYSCALL_NOERROR(p,x)					\
-	__ENTRY(p,x); mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
+	__ENTRY(p,x);						\
-	t ST_SYSCALL; __END(p,x)
+	mov (_CAT(SYS_,x))|SYSCALL_G2RFLAG,%g1;			\
+	add %o7,8,%g2;						\
+97:	t ST_SYSCALL;						\
+	PINSYSCALL(_CAT(SYS_,x), 97b);				\
+	__END(p,x)
 
 /*
  * PSEUDO_NOERROR(x,y) is like RSYSCALL_NOERROR(y) except that the name is x.
  */
-#define __PSEUDO_NOERROR(p,x,y) \
+#define __PSEUDO_NOERROR(p,x,y)					\
-	__ENTRY(p,x); mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1; add %o7,8,%g2; \
+	__ENTRY(p,x);						\
-	t ST_SYSCALL; __END(p,x)
+	mov (_CAT(SYS_,y))|SYSCALL_G2RFLAG,%g1;			\
+	add %o7,8,%g2;						\
+97:	t ST_SYSCALL;						\
+	PINSYSCALL(_CAT(SYS_,y), 97b);				\
+	__END(p,x)
 
 /*
  * SYSENTRY is for functions that pretend to be syscalls.

lib/libc/arch/sparc64/gen/setjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: setjmp.S,v 1.6 2016/04/28 12:53:47 kettenis Exp $	*/
+/*	$OpenBSD: setjmp.S,v 1.7 2023/12/10 16:45:52 deraadt Exp $	*/
 /*	$NetBSD: setjmp.S,v 1.4 2000/08/28 00:45:59 eeh Exp $	*/
 
 /*
@@ -53,7 +53,8 @@ ENTRY(setjmp)
 	mov	1, %o0			/* SIG_BLOCK */
 	mov	SYS_sigprocmask, %g1	
 	clr	%o1			/* sigprocmask(SIG_BLOCK, 0) */
-	t	ST_SYSCALL
+99:	t	ST_SYSCALL
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	stx	%o0, [%o3 + 0x10]
 
 	stx	%sp, [%o3 + 0x00]	/* store caller's stack pointer */
@@ -68,7 +69,8 @@ ENTRY(longjmp)
 	mov	3, %o0			/* SIG_SETMASK */
 	ldx	[%i0 + 0x10], %o1
 	mov	SYS_sigprocmask, %g1	
-	t	ST_SYSCALL
+98:	t	ST_SYSCALL
+	PINSYSCALL(SYS_sigprocmask, 98b)
 	
 	ldx	[%i0 + 0x00], %fp
 	ldx	[%i0 + 0x08], %i7

lib/libc/arch/sparc64/gen/sigsetjmp.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigsetjmp.S,v 1.4 2016/05/08 18:29:34 guenther Exp $	*/
+/*	$OpenBSD: sigsetjmp.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $	*/
 /*	$NetBSD: sigsetjmp.S,v 1.5 2000/08/28 00:45:59 eeh Exp $	*/
 /*
  * Copyright (c) 1992, 1993
@@ -43,7 +43,8 @@ ENTRY(sigsetjmp)
 	mov	1, %o0			/* SIG_BLOCK */
 	mov	SYS_sigprocmask, %g1	
 	clr	%o1			/* sigprocmask(SIG_BLOCK, 0) */
-	t	ST_SYSCALL
+99:	t	ST_SYSCALL
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	stx	%o0, [%o3 + 0x10]
 
 1:	stx	%sp, [%o3 + 0x00]	/* store caller's stack pointer */
@@ -62,7 +63,8 @@ ENTRY(siglongjmp)
 	 mov	3, %o0			/* SIG_SETMASK */
 	ldx	[%i0 + 0x10], %o1
 	mov	SYS_sigprocmask, %g1	
-	t	ST_SYSCALL
+98:	t	ST_SYSCALL
+	PINSYSCALL(SYS_sigprocmask, 98b)
 
 1:	ldx	[%i0 + 0x00], %fp
 	ldx	[%i0 + 0x08], %i7

lib/libc/arch/sparc64/sys/brk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: brk.S,v 1.11 2023/01/13 17:52:08 miod Exp $	*/
+/*	$OpenBSD: brk.S,v 1.12 2023/12/10 16:45:52 deraadt Exp $	*/
 /*	$NetBSD: brk.S,v 1.9 2000/07/25 20:15:40 mycroft Exp $	*/
 
 /*
@@ -59,7 +59,8 @@ ENTRY_NB(brk)
 	movgu	%xcc, %o1, %o0		/*	%o0 = minbrk */
 	mov	%o0, %o2		/* save argument to syscall */
 	mov	SYS_break, %g1
-	t	ST_SYSCALL
+99:	t	ST_SYSCALL
+	PINSYSCALL(SYS_break, 99b)
 	set	__curbrk, %o3
 	bcc,a,pt	%icc, 1f
 	 ldx	[%o5 + %o3], %o4
@@ -74,7 +75,8 @@ ENTRY_NB(brk)
 	movgu	%xcc, %o1, %o0		/*	%o0 = minbrk */
 	mov	%o0, %o2		/* save argument to syscall */
 	mov	SYS_break, %g1
-	t	ST_SYSCALL
+98:	t	ST_SYSCALL
+	PINSYSCALL(SYS_break, 98b)
 	bcc,a,pt	%icc,1f
 	 sethi	%hi(__curbrk), %g1
 	ERROR()

lib/libc/arch/sparc64/sys/sbrk.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sbrk.S,v 1.9 2023/01/13 17:52:08 miod Exp $	*/
+/*	$OpenBSD: sbrk.S,v 1.10 2023/12/10 16:45:52 deraadt Exp $	*/
 /*	$NetBSD: sbrk.S,v 1.7 2000/07/25 15:14:46 mycroft Exp $	*/
 
 /*
@@ -59,7 +59,8 @@ ENTRY_NB(sbrk)
 	add	%o3, %o0, %o4			/* %o4 = new break */
 	mov	%o4, %o0			/* copy for syscall */
 	mov	SYS_break, %g1
-	t	ST_SYSCALL			/* break(new_break) */
+99:	t	ST_SYSCALL			/* break(new_break) */
+	PINSYSCALL(SYS_break, 99b)
 	bcc,a	1f				/* if success, */
 	 mov	%o3, %o0			/*    set return value */
 	ERROR()
@@ -72,7 +73,8 @@ ENTRY_NB(sbrk)
 	add	%o3, %o0, %o4			/* %o4 = new break */
 	mov	%o4, %o0			/* copy for syscall */
 	mov	SYS_break, %g1
-	t	ST_SYSCALL			/* break(new_break) */
+98:	t	ST_SYSCALL			/* break(new_break) */
+	PINSYSCALL(SYS_break, 98b)
 	bcc,a	1f				/* if success, */
 	 mov	%o3, %o0			/*    set return value */
 	ERROR()

lib/libc/arch/sparc64/sys/sigpending.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigpending.S,v 1.3 2015/09/05 06:22:47 guenther Exp $	*/
+/*	$OpenBSD: sigpending.S,v 1.4 2023/12/10 16:45:52 deraadt Exp $	*/
 /*
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -38,7 +38,8 @@
 SYSENTRY(sigpending)
 	mov	%o0, %o2		/* save pointer */
 	mov	SYS_sigpending, %g1
-	t	ST_SYSCALL		/* sigpending() */
+99:	t	ST_SYSCALL		/* sigpending() */
+	PINSYSCALL(SYS_sigpending, 99b)
 	bcc,a	1f			/* if success, */
 	 st	%o0, [%o2]		/*    store return value */
 	ERROR()

lib/libc/arch/sparc64/sys/sigprocmask.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigprocmask.S,v 1.4 2015/10/23 04:39:25 guenther Exp $	*/
+/*	$OpenBSD: sigprocmask.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $	*/
 /*
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -46,7 +46,8 @@ SYSENTRY_HIDDEN(sigprocmask)
 	mov	1, %o0		/* ... using sigprocmask(SIG_BLOCK) */
 1:
 	mov	SYS_sigprocmask, %g1
-	t	ST_SYSCALL
+99:	t	ST_SYSCALL
+	PINSYSCALL(SYS_sigprocmask, 99b)
 	bcc	2f		/* if success, */
 	 tst	%o2		/*    check to see if oset requested */
 	ERROR()

lib/libc/arch/sparc64/sys/sigsuspend.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: sigsuspend.S,v 1.4 2016/05/07 19:05:22 guenther Exp $	*/
+/*	$OpenBSD: sigsuspend.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $	*/
 /*
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -39,6 +39,7 @@
 SYSENTRY_HIDDEN(sigsuspend)
 	ld	[%o0], %o0		/* indirect to mask argument */
 	mov	SYS_sigsuspend, %g1
-	t	ST_SYSCALL
+99:	t	ST_SYSCALL
+	PINSYSCALL(SYS_sigsuspend, 99b)
 	ERROR()				/* always terminates with EINTR */
 SYSCALL_END_HIDDEN(sigsuspend)

lib/libc/arch/sparc64/sys/tfork_thread.S

@@ -1,4 +1,4 @@
-/*	$OpenBSD: tfork_thread.S,v 1.4 2020/10/18 14:28:18 deraadt Exp $	*/
+/*	$OpenBSD: tfork_thread.S,v 1.5 2023/12/10 16:45:52 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2005, Miodrag Vallat
@@ -36,7 +36,8 @@ ENTRY(__tfork_thread)
 	 * different return paths.
 	 */
 	mov	SYS___tfork, %g1
-	t	ST_SYSCALL
+99:	t	ST_SYSCALL
+	PINSYSCALL(SYS___tfork, 99b)
 	bcs	9f
 	 nop
 
@@ -59,7 +60,8 @@ ENTRY(__tfork_thread)
 
 	mov	SYS___threxit, %g1
 	clr	%o0
-	t	ST_SYSCALL	/* will not return */
+98:	t	ST_SYSCALL	/* will not return */
+	PINSYSCALL(SYS___threxit, 98b)
 	unimp
 
 9:

libexec/ld.so/aarch64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.5 2020/02/18 12:19:11 kettenis Exp $ */
+/*	$OpenBSD: SYS.h,v 1.6 2023/12/10 16:45:50 deraadt Exp $ */
 
 /*
  * Copyright (c) 2016 Dale Rahn
@@ -29,18 +29,25 @@
 #include <machine/asm.h>
 #include <sys/syscall.h>
 
-#define SYSTRAP(x)					\
+#define PINSYSCALL(sysno, label)				\
-	ldr	x8, =SYS_ ## x				;\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
-	svc	0					;\
+	.long label						;\
-	dsb	nsh					;\
+	.long sysno						;\
+	.popsection
+
+#define SYSTRAP(x)						\
+	ldr	x8, =SYS_ ## x					;\
+99:	svc	0						;\
+	PINSYSCALL(SYS_ ## x, 99b)				;\
+	dsb	nsh						;\
 	isb
 
-#define DL_SYSCALL(n)					\
+#define DL_SYSCALL(n)						\
-	.global		__CONCAT(_dl_,n)		;\
+	.global		__CONCAT(_dl_,n)			;\
-	.type		__CONCAT(_dl_,n)%function	;\
+	.type		__CONCAT(_dl_,n)%function		;\
-__CONCAT(_dl_,n):					;\
+__CONCAT(_dl_,n):						;\
-	RETGUARD_SETUP(__CONCAT(_dl_,n), x15)		;\
+	RETGUARD_SETUP(__CONCAT(_dl_,n), x15)			;\
-	SYSTRAP(n)					;\
+	SYSTRAP(n)						;\
-	cneg	x0, x0, cs	/* r0 = -errno */	;\
+	cneg	x0, x0, cs	/* r0 = -errno */		;\
-	RETGUARD_CHECK(__CONCAT(_dl_,n), x15)	 	;\
+	RETGUARD_CHECK(__CONCAT(_dl_,n), x15)	 		;\
 	ret

libexec/ld.so/aarch64/ld.script

@@ -5,6 +5,7 @@ PHDRS
 	btext	PT_LOAD FLAGS (0x08000001);
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -39,11 +40,20 @@ SECTIONS
     {
 	*(.openbsd.randomdata .openbsd.randomdata.*)
     } :data :relro :random
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
     .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
     .dynamic	: { *(.dynamic) } :data :relro :dynamic
     .got	: { *(.got.plt) *(.got) } :data :relro
     . = DATA_SEGMENT_RELRO_END (0, .);
 
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
+
     /* BOOTDATA */
     . = ALIGN(0x1000);
     boot_data_start = .;

libexec/ld.so/alpha/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.3 2023/12/06 06:15:33 miod Exp $ */
+/*	$OpenBSD: SYS.h,v 1.4 2023/12/10 16:45:50 deraadt Exp $ */
 
 /*
  * Copyright (c) 2001 Niklas Hallqvist
@@ -61,10 +61,17 @@
  * further register saving.
  */
 
+#define PINSYSCALL(sysno, label)				\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
+	.long label						;\
+	.long sysno						;\
+	.popsection
+
 #define	DL_SYSCALL(c)							\
 LEAF_NOPROFILE(_dl_##c, irrelevant);					\
 	ldiq	v0, SYS_##c;						\
-	call_pal PAL_OSF1_callsys;					\
+99:	call_pal PAL_OSF1_callsys;					\
+	PINSYSCALL(SYS_##c, 99b);					\
 	beq	a3, 1f;							\
 	subq	zero, v0, v0;	/* return -errno */			\
 1:									\

libexec/ld.so/alpha/ld.script

@@ -5,6 +5,7 @@ PHDRS
 	btext	PT_LOAD FLAGS (0x08000005);
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -39,6 +40,10 @@ SECTIONS
     {
 	*(.openbsd.randomdata .openbsd.randomdata.*)
     } :data :relro :random
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
     .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
     .dynamic	: { *(.dynamic) } :data :relro :dynamic
     .got	: { *(.got.plt) *(.got) } :data :relro

libexec/ld.so/amd64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.3 2023/04/25 04:11:10 deraadt Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.4 2023/12/10 16:45:50 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2002,2004 Dale Rahn
@@ -30,19 +30,26 @@
 #include <sys/syscall.h>
 #include <machine/asm.h>
 
-#define	DL_SYSCALL(n)					\
+#define PINSYSCALL(sysno, label)				\
-	.global	__CONCAT(_dl_,n)			;\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
-	.type	__CONCAT(_dl_,n), @function		;\
+	.long label						;\
-	.align	16,0xcc					;\
+	.long sysno						;\
-__CONCAT(_dl_,n):					;\
+	.popsection
-	endbr64						;\
+
-	RETGUARD_SETUP(_dl_##n, r11)			;\
+#define	DL_SYSCALL(n)						\
-	RETGUARD_PUSH(r11)				;\
+	.global	__CONCAT(_dl_,n)				;\
-	movl	$(__CONCAT(SYS_,n)), %eax		;\
+	.type	__CONCAT(_dl_,n), @function			;\
-	movq	%rcx, %r10				;\
+	.align	16,0xcc						;\
-	syscall						;\
+__CONCAT(_dl_,n):						;\
-	jnc	1f					;\
+	endbr64							;\
-	neg	%rax					;\
+	RETGUARD_SETUP(_dl_##n, r11)				;\
-1:	RETGUARD_POP(r11)				;\
+	RETGUARD_PUSH(r11)					;\
-	RETGUARD_CHECK(_dl_##n, r11)			;\
+	movl	$(__CONCAT(SYS_,n)), %eax			;\
+	movq	%rcx, %r10					;\
+99:	syscall							;\
+	PINSYSCALL(__CONCAT(SYS_,n), 99b)			;\
+	jnc	1f						;\
+	neg	%rax						;\
+1:	RETGUARD_POP(r11)					;\
+	RETGUARD_CHECK(_dl_##n, r11)				;\
 	ret

libexec/ld.so/amd64/ld.script

@@ -5,6 +5,7 @@ PHDRS
 	btext	PT_LOAD FLAGS (0x08000005);
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -43,6 +44,11 @@ SECTIONS
     .got	: { *(.got.plt) *(.got) } :data :relro
     . = DATA_SEGMENT_RELRO_END (0, .);
 
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
+
     /* BOOTDATA */
     . = ALIGN(0x1000);
     boot_data_start = .;

libexec/ld.so/arm/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.3 2020/03/13 09:31:26 deraadt Exp $ */
+/*	$OpenBSD: SYS.h,v 1.4 2023/12/10 16:45:50 deraadt Exp $ */
 
 /*
  * Copyright (c) 2004 Dale Rahn
@@ -29,18 +29,25 @@
 #include <machine/asm.h>
 #include <sys/syscall.h>
 
+#define PINSYSCALL(sysno, label)				\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
+	.long label						;\
+	.long sysno						;\
+	.popsection
+
 #define SYSTRAP(x) \
-	ldr	r12, =SYS_ ## x;			\
+	ldr	r12, =SYS_ ## x					;\
-	swi	0;					\
+99:	swi	0						;\
-	dsb	nsh;					\
+	PINSYSCALL(SYS_ ## x, 99b)				;\
+	dsb	nsh						;\
 	isb
 
-#define DL_SYSCALL(n)					\
+#define DL_SYSCALL(n)						\
-	.global		__CONCAT(_dl_,n)		;\
+	.global		__CONCAT(_dl_,n)			;\
-	.type		__CONCAT(_dl_,n)%function	;\
+	.type		__CONCAT(_dl_,n)%function		;\
-__CONCAT(_dl_,n):					;\
+__CONCAT(_dl_,n):						;\
-	SYSTRAP(n)					;\
+	SYSTRAP(n)						;\
-	bcs	.L_cerr					;\
+	bcs	.L_cerr						;\
 	mov	pc, lr
 
 .L_cerr:

libexec/ld.so/arm/ld.script

@@ -5,6 +5,7 @@ PHDRS
 	btext	PT_LOAD FLAGS (0x08000005);
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -40,6 +41,11 @@ SECTIONS
     {
 	*(.openbsd.randomdata .openbsd.randomdata.*)
     } :data :relro :random
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
+
     .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
     .dynamic	: { *(.dynamic) } :data :relro :dynamic
     .got	: { *(.got.plt) *(.got) } :data :relro

libexec/ld.so/hppa/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.1 2017/08/27 21:59:52 deraadt Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.2 2023/12/10 16:45:50 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2004 Michael Shalayeff
@@ -33,17 +33,24 @@
 #include <machine/vmparam.h>
 #undef  _LOCORE
 
-#define	DL_SYSCALL(x)				\
+#define PINSYSCALL(sysno, label)				\
-ENTRY(__CONCAT(_dl_,x),0)			!\
+	.pushsection .openbsd.syscalls,"",@progbits		!\
-	stw	rp, HPPA_FRAME_ERP(sr0,sp)	!\
+	.long label						!\
-	ldil	L%SYSCALLGATE, r1		!\
+	.long sysno						!\
-	ble	4(sr7, r1)			!\
+	.popsection
-	ldi	__CONCAT(SYS_,x), t1		!\
+
-	comb,<>	r0, t1, _dl_sysexit		!\
+#define	DL_SYSCALL(x)						\
-	ldw	HPPA_FRAME_ERP(sr0,sp), rp	!\
+ENTRY(__CONCAT(_dl_,x),0)					!\
-	bv	r0(rp)				!\
+	stw	rp, HPPA_FRAME_ERP(sr0,sp)			!\
-	nop					!\
+	ldil	L%SYSCALLGATE, r1				!\
-_dl_sysexit					!\
+99:	ble	4(sr7, r1)					!\
-	bv	r0(rp)				!\
+	PINSYSCALL(__CONCAT(SYS_,x), 99b)			!\
-	sub	r0, ret0, ret0			!\
+	 ldi	__CONCAT(SYS_,x), t1				!\
+	comb,<>	r0, t1, _dl_sysexit				!\
+	ldw	HPPA_FRAME_ERP(sr0,sp), rp			!\
+	bv	r0(rp)						!\
+	nop							!\
+_dl_sysexit							!\
+	bv	r0(rp)						!\
+	sub	r0, ret0, ret0					!\
 EXIT(__CONCAT(_dl_,x))

libexec/ld.so/hppa/ld.script

@@ -6,6 +6,7 @@ PHDRS
 	pltgot	PT_LOAD;
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -45,6 +46,10 @@ SECTIONS
     {
 	*(.openbsd.randomdata .openbsd.randomdata.*)
     } :data :relro :random
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
     .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
     .dynamic	: { *(.dynamic) } :data :relro :dynamic
     . = DATA_SEGMENT_RELRO_END (0, .);

libexec/ld.so/i386/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.1 2017/08/27 21:59:52 deraadt Exp $ */
+/*	$OpenBSD: SYS.h,v 1.2 2023/12/10 16:45:50 deraadt Exp $ */
 
 /*
  * Copyright (c) 2002 Dale Rahn
@@ -30,6 +30,12 @@
 #include <sys/syscall.h>
 #include <machine/asm.h>
 
+#define PINSYSCALL(sysno, label)				\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
+	.long label						;\
+	.long sysno						;\
+	.popsection
+
 #define DL_SYSCALL(n)						\
 	.section	".text"					;\
 	.align		16,0xcc					;\
@@ -37,7 +43,8 @@
 	.type		__CONCAT(_dl_,n),@function		;\
 __CONCAT(_dl_,n):						;\
 	movl $__CONCAT(SYS_, n),%eax;				;\
-	int $0x80						;\
+99:	int $0x80						;\
+	PINSYSCALL(__CONCAT(SYS_, n), 99b)			;\
 	jb	.L_cerr						;\
 	ret
 

libexec/ld.so/i386/ld.script

@@ -5,6 +5,7 @@ PHDRS
 	btext	PT_LOAD FLAGS (0x08000005);
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -38,6 +39,11 @@ SECTIONS
     {
 	*(.openbsd.randomdata .openbsd.randomdata.*)
     } :data :relro :random
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
+
     .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
     .dynamic	: { *(.dynamic) } :data :relro :dynamic
     .got	: { *(.got.plt) *(.got) } :data :relro

libexec/ld.so/m88k/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.4 2019/10/23 19:55:09 guenther Exp $	*/
+/*	$OpenBSD: SYS.h,v 1.5 2023/12/10 16:45:50 deraadt Exp $	*/
 
 /*
  * Copyright (c) 2013 Miodrag Vallat.
@@ -44,22 +44,29 @@
 #include <machine/asm.h>
 #include <sys/syscall.h>
 
+#define PINSYSCALL(sysno, label)				\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
+	.long label						;\
+	.long sysno						;\
+	.popsection
+
 #define	__CONCAT(p,x)		p##x
 #define	__ENTRY(p,x)		ENTRY(__CONCAT(p,x))
 #define	__SYSCALLNAME(p,x)	__CONCAT(p,x)
 
-#define	__DO_SYSCALL(x)					\
+#define	__DO_SYSCALL(x)						\
-	or %r13, %r0, __SYSCALLNAME(SYS_,x);		\
+	or %r13, %r0, __SYSCALLNAME(SYS_,x)			;\
-	tb0 0, %r0, 450
+99:	tb0 0, %r0, 450						;\
+	PINSYSCALL(__SYSCALLNAME(SYS_,x), 99b)
 
 /*
  * m88k syscall return ABI requires the same amount of ASM
  * whether or not the syscall can possibly fail, so there's
  * no benefit to a DL_SYSCALL_NOERR() macro.
  */
-#define DL_SYSCALL(n)					\
+#define DL_SYSCALL(n)						\
-	__ENTRY(_dl_,n);				\
+	__ENTRY(_dl_,n)						;\
-	__DO_SYSCALL(n);				\
+	__DO_SYSCALL(n)						;\
-	subu	%r2, %r0, %r2;	/* return -errno; */	\
+	subu	%r2, %r0, %r2	/* return -errno; */		;\
-	jmp	%r1;					\
+	jmp	%r1						;\
 	END(_dl_##n)

libexec/ld.so/m88k/ld.script

@@ -5,6 +5,7 @@ PHDRS
   btext   PT_LOAD FLAGS (0x08000005);
   data    PT_LOAD;
   random  PT_OPENBSD_RANDOMIZE;
+  scalls PT_OPENBSD_SYSCALLS;
   relro   PT_GNU_RELRO;
   dynamic PT_DYNAMIC;
   note    PT_NOTE;
@@ -36,6 +37,9 @@ SECTIONS
   . = DATA_SEGMENT_ALIGN (0x10000, 0x1000);
   .openbsd.randomdata : { *(.openbsd.randomdata .openbsd.randomdata.*) }
     :data :relro :random
+  .openbsd.syscalls :   { *(.openbsd.syscalls .openbsd.syscalls.*) }
+    :syscalls
+
   .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
   .dynamic : { *(.dynamic) } :data :relro :dynamic
   .got : { *(.got.plt) *(.got) } :data :relro

libexec/ld.so/mips64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.1 2017/08/27 21:59:52 deraadt Exp $ */
+/*	$OpenBSD: SYS.h,v 1.2 2023/12/10 16:45:50 deraadt Exp $ */
 
 /*
  * Copyright (c) 1998-2002 Opsycon AB, Sweden.
@@ -29,14 +29,21 @@
 #include <sys/syscall.h>
 #include <machine/asm.h>
 
-#define	DL_SYSCALL(c)							\
+#define PINSYSCALL(sysno, label)				\
-NLEAF(_dl_##c,0)							\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
-	li      v0,SYS_##c;						\
+	.long label						;\
-	syscall;							\
+	.long sysno						;\
-	bnez	a3, 1f;							\
+	.popsection
-	j	ra;							\
+
-1:		;							\
+#define	DL_SYSCALL(c)						\
-	subu	v0, zero, v0;						\
+NLEAF(_dl_##c,0)						\
-	j	ra	;						\
+	li      v0,SYS_##c;					\
+99:	syscall;						\
+	PINSYSCALL(SYS_##c, 99b);				\
+	bnez	a3, 1f;						\
+	j	ra;						\
+1:	;							\
+	subu	v0, zero, v0;					\
+	j	ra;						\
 END(_dl_##c)
 

libexec/ld.so/mips64/ld.script

@@ -5,6 +5,7 @@ PHDRS
 	btext	PT_LOAD FLAGS (0x08000005);
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -39,6 +40,11 @@ SECTIONS
     {
 	*(.openbsd.randomdata .openbsd.randomdata.*)
     } :data :relro :random
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
+
     .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
     .dynamic	: { *(.dynamic) } :data :relro :dynamic
     _gp = ALIGN(16) + 0x7ff0;

libexec/ld.so/powerpc/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.4 2020/11/28 19:49:30 gkoehler Exp $ */
+/*	$OpenBSD: SYS.h,v 1.5 2023/12/10 16:45:50 deraadt Exp $ */
 
 /*
  * Copyright (c) 1999 Dale Rahn
@@ -29,14 +29,21 @@
 #include <sys/syscall.h>
 #include <machine/asm.h>
 
-#define	DL_SYSCALL(n)							\
+#define PINSYSCALL(sysno, label)				\
-ENTRY(_dl_##n)								\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
-	RETGUARD_SETUP(_dl_##n, %r11, %r12)				;\
+	.long label						;\
-	li	0, SYS_##n						;\
+	.long sysno						;\
-	sc								;\
+	.popsection
-	cmpwi	0, 0							;\
+
-	beq+	.L_end##n						;\
+#define	DL_SYSCALL(n)						\
-	neg	3, 3							;\
+ENTRY(_dl_##n)							\
-.L_end##n:								;\
+	RETGUARD_SETUP(_dl_##n, %r11, %r12)			;\
-	RETGUARD_CHECK(_dl_##n, %r11, %r12)				;\
+	li	0, SYS_##n					;\
+99:	sc							;\
+	PINSYSCALL(SYS_##n, 99b)				;\
+	cmpwi	0, 0						;\
+	beq+	.L_end##n					;\
+	neg	3, 3						;\
+.L_end##n:							;\
+	RETGUARD_CHECK(_dl_##n, %r11, %r12)			;\
 	blr

libexec/ld.so/powerpc/ld.script

@@ -5,6 +5,7 @@ PHDRS
 	btext	PT_LOAD FLAGS (0x08000005);
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -39,6 +40,11 @@ SECTIONS
     {
 	*(.openbsd.randomdata .openbsd.randomdata.*)
     } :data :relro :random
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
+
     .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
     .dynamic	: { *(.dynamic) } :data :relro :dynamic
     .got	: { *(.got.plt) *(.got) } :data :relro

libexec/ld.so/powerpc64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.2 2020/10/16 23:42:53 deraadt Exp $ */
+/*	$OpenBSD: SYS.h,v 1.3 2023/12/10 16:45:50 deraadt Exp $ */
 
 /*
  * Copyright (c) 1999 Dale Rahn
@@ -29,14 +29,21 @@
 #include <sys/syscall.h>
 #include <machine/asm.h>
 
-#define	DL_SYSCALL(n)							\
+#define PINSYSCALL(sysno, label)				\
-ENTRY(_dl_##n)								\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
-	RETGUARD_SETUP(_dl_##n, %r11)					;\
+	.long label						;\
-	li	%r0, SYS_##n						;\
+	.long sysno						;\
-	sc								;\
+	.popsection
-	cmpdi	%r0, 0							;\
+
-	beq .L_end##n							;\
+#define	DL_SYSCALL(n)						\
-	neg	%r3, %r3						;\
+ENTRY(_dl_##n)							\
-.L_end##n:								;\
+	RETGUARD_SETUP(_dl_##n, %r11)				;\
-	RETGUARD_CHECK(_dl_##n, %r11)					;\
+	li	%r0, SYS_##n					;\
+99:	sc							;\
+	PINSYSCALL(SYS_##n, 99b)				;\
+	cmpdi	%r0, 0						;\
+	beq .L_end##n						;\
+	neg	%r3, %r3					;\
+.L_end##n:							;\
+	RETGUARD_CHECK(_dl_##n, %r11)				;\
 	blr

libexec/ld.so/powerpc64/ld.script

@@ -5,6 +5,7 @@ PHDRS
 	text	PT_LOAD FLAGS (1);
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -38,6 +39,11 @@ SECTIONS
     {
 	*(.openbsd.randomdata .openbsd.randomdata.*)
     } :data :relro :random
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
+
     .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
     .dynamic	: { *(.dynamic) } :data :relro :dynamic
     .got	: { *(.got.plt) *(.got) } :data :relro

libexec/ld.so/riscv64/SYS.h

@@ -1,4 +1,4 @@
-/*	$OpenBSD: SYS.h,v 1.1 2021/04/28 15:16:26 drahn Exp $ */
+/*	$OpenBSD: SYS.h,v 1.2 2023/12/10 16:45:50 deraadt Exp $ */
 
 /*
  * Copyright (c) 2016 Dale Rahn <drahn@openbsd.org>
@@ -29,19 +29,26 @@
 #include <machine/asm.h>
 #include <sys/syscall.h>
 
-#define SYSTRAP(x)					\
+#define PINSYSCALL(sysno, label)				\
-	li	t0, SYS_ ## x				;\
+	.pushsection .openbsd.syscalls,"",@progbits		;\
-	ecall						;\
+	.long label						;\
+	.long sysno						;\
+	.popsection
+
+#define SYSTRAP(x)						\
+	li	t0, SYS_ ## x					;\
+99:	ecall							;\
+	PINSYSCALL(SYS_ ## x, 99b)
 	/* XXX fence */
 
-#define DL_SYSCALL(n)					\
+#define DL_SYSCALL(n)						\
-	.global		__CONCAT(_dl_,n)		;\
+	.global		__CONCAT(_dl_,n)			;\
-	.type		__CONCAT(_dl_,n)%function	;\
+	.type		__CONCAT(_dl_,n)%function		;\
-__CONCAT(_dl_,n):					;\
+__CONCAT(_dl_,n):						;\
-	RETGUARD_SETUP(__CONCAT(_dl_,n), x15)		;\
+	RETGUARD_SETUP(__CONCAT(_dl_,n), x15)			;\
-	SYSTRAP(n)					;\
+	SYSTRAP(n)						;\
-	beqz	t0, 1f					;\
+	beqz	t0, 1f						;\
-	sub	a0, zero, a0	/* r0 = -errno */	;\
+	sub	a0, zero, a0	/* r0 = -errno */		;\
-1:							;\
+1:								;\
-	RETGUARD_CHECK(__CONCAT(_dl_,n), x15)	 	;\
+	RETGUARD_CHECK(__CONCAT(_dl_,n), x15)	 		;\
 	ret

libexec/ld.so/riscv64/ld.script

@@ -5,6 +5,7 @@ PHDRS
 	btext	PT_LOAD FLAGS (0x08000005);
 	data	PT_LOAD;
 	random	PT_OPENBSD_RANDOMIZE;
+	syscalls PT_OPENBSD_SYSCALLS;
 	relro	PT_GNU_RELRO;
 	dynamic	PT_DYNAMIC;
 	note	PT_NOTE;
@@ -39,6 +40,11 @@ SECTIONS
     {
 	*(.openbsd.randomdata .openbsd.randomdata.*)
     } :data :relro :random
+    .openbsd.syscalls :
+    {
+	*(.openbsd.syscalls .openbsd.syscalls.*)
+    } :syscalls
+
     .data.rel.ro : { *(.data.rel.ro.local*) *(.data.rel.ro*) } :data :relro
     .dynamic	: { *(.dynamic) } :data :relro :dynamic
     .got	: { *(.got.plt) *(.got) } :data :relro