* [PATCH] parisc: Fix 64-bit userspace syscall path
@ 2024-09-07 22:40 Helge Deller
0 siblings, 0 replies; only message in thread
From: Helge Deller @ 2024-09-07 22:40 UTC (permalink / raw)
To: linux-parisc
Currently the glibc isn't yet ported to 64-bit for hppa, so
there is no usable userspace available yet.
But it's possible to manually build a static 64-bit binary
and run that for testing. One such 64-bit test program is
available at http://ftp.parisc-linux.org/src/64bit.tar.gz
and it shows various issues with the existing 64-bit syscall
path in the kernel.
This patch fixes those issues.
Signed-off-by: Helge Deller <deller@gmx.de>
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S
index 1f51aa9c8230..0fa81bf1466b 100644
--- a/arch/parisc/kernel/syscall.S
+++ b/arch/parisc/kernel/syscall.S
@@ -243,10 +243,10 @@ linux_gateway_entry:
#ifdef CONFIG_64BIT
ldil L%sys_call_table, %r1
- or,= %r2,%r2,%r2
- addil L%(sys_call_table64-sys_call_table), %r1
+ or,ev %r2,%r2,%r2
+ ldil L%sys_call_table64, %r1
ldo R%sys_call_table(%r1), %r19
- or,= %r2,%r2,%r2
+ or,ev %r2,%r2,%r2
ldo R%sys_call_table64(%r1), %r19
#else
load32 sys_call_table, %r19
@@ -379,10 +379,10 @@ tracesys_next:
extrd,u %r19,63,1,%r2 /* W hidden in bottom bit */
ldil L%sys_call_table, %r1
- or,= %r2,%r2,%r2
- addil L%(sys_call_table64-sys_call_table), %r1
+ or,ev %r2,%r2,%r2
+ ldil L%sys_call_table64, %r1
ldo R%sys_call_table(%r1), %r19
- or,= %r2,%r2,%r2
+ or,ev %r2,%r2,%r2
ldo R%sys_call_table64(%r1), %r19
#else
load32 sys_call_table, %r19
@@ -1327,6 +1327,8 @@ ENTRY(sys_call_table)
END(sys_call_table)
#ifdef CONFIG_64BIT
+#undef __SYSCALL_WITH_COMPAT
+#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native)
.align 8
ENTRY(sys_call_table64)
#include <asm/syscall_table_64.h> /* 64-bit syscalls */
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2024-09-07 22:40 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-09-07 22:40 [PATCH] parisc: Fix 64-bit userspace syscall path Helge Deller
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.