From: anton <anton@openbsd.org>
Date: Mon, 1 Apr 2024 18:52:34 +0000 (+0000)
Subject: The regress/sys/arch/amd64/fpu/fenv.S utility issues "direct" syscalls
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=b9fcb1698cd154a339319f0e446a1dc0a9cf5891;p=openbsd

The regress/sys/arch/amd64/fpu/fenv.S utility issues "direct" syscalls
which does not go through libc. This is no longer possible due to
pinsyscalls(2). Borrow the PINSYSCALL asm macro from libc/arch/DEFS.h to
setup a .openbsd.syscalls section.
---

diff --git a/regress/sys/arch/amd64/fpu/fenv.S b/regress/sys/arch/amd64/fpu/fenv.S
index 1178d15e670..1ad78a1a51e 100644
--- a/regress/sys/arch/amd64/fpu/fenv.S
+++ b/regress/sys/arch/amd64/fpu/fenv.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fenv.S,v 1.1.1.1 2018/08/21 18:35:18 bluhm Exp $	*/
+/*	$OpenBSD: fenv.S,v 1.2 2024/04/01 18:52:34 anton Exp $	*/
 /*
  * Copyright (c) 2018 Alexander Bluhm <bluhm@openbsd.org>
  *
@@ -17,6 +17,13 @@
 
 #include <sys/syscall.h>
 
+#define PINSYSCALL(sysno, label)					\
+	.pushsection .openbsd.syscalls,"",%progbits;			\
+	.p2align 2;							\
+	.long label;							\
+	.long sysno;							\
+	.popsection;
+
 	.section	.note.openbsd.ident, "a"
 	.p2align	2
 	.long		8
@@ -49,7 +56,11 @@ _start:
 	mov	$1,		%rdi
 	mov	$env,		%rsi
 	mov	$(env_end-env),	%rdx
+1:
 	syscall
+	PINSYSCALL(SYS_write, 1b)
 	mov	$SYS_exit,	%rax
 	mov	$0,		%rdi
+2:
 	syscall
+	PINSYSCALL(SYS_exit, 2b)