[klibc] [klibc:master] parisc: Fix vfork()

[klibc-bot for Ben Hutchings]

Commit-ID:  b71dd57f6a784962681ac05aa686b28db8668609
Gitweb:     http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=b71dd57f6a784962681ac05aa686b28db8668609
Author:     Ben Hutchings <ben at decadent.org.uk>
AuthorDate: Mon, 21 Jan 2019 03:55:35 +0000
Committer:  Ben Hutchings <ben at decadent.org.uk>
CommitDate: Mon, 21 Jan 2019 03:55:35 +0000

[klibc] parisc: Fix vfork()

The caller does not pass any arguments, so we need to set the system
call number ourselves.

Signed-off-by: Ben Hutchings <ben at decadent.org.uk>

---
 usr/klibc/arch/parisc/vfork.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/usr/klibc/arch/parisc/vfork.S b/usr/klibc/arch/parisc/vfork.S
index 97ebc8f..3868a8d 100644
--- a/usr/klibc/arch/parisc/vfork.S
+++ b/usr/klibc/arch/parisc/vfork.S
@@ -1,7 +1,7 @@
 /*
  * arch/parisc/vfork.S, "vfork() me harder. ugh." -- kyle
  *
- * %r20 contains the system call number, %rp contains whence we came,
+ * %rp contains whence we came,
  * %rp is saved and restored across the syscall, thankfully.
  *
  */
@@ -12,6 +12,7 @@
 	.type	vfork, at function
 vfork:
 	/* pid_t vfork(void) */
+	ldi		113,%r20
 	ble		0x100(%sr2, %r0)	; jump to gateway page
 	nop