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parisc: Fix 64-bit userspace syscall path
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> Cc: stable@vger.kernel.org # v4.19+
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@ -243,10 +243,10 @@ linux_gateway_entry:
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#ifdef CONFIG_64BIT
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ldil L%sys_call_table, %r1
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or,= %r2,%r2,%r2
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addil L%(sys_call_table64-sys_call_table), %r1
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or,ev %r2,%r2,%r2
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ldil L%sys_call_table64, %r1
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ldo R%sys_call_table(%r1), %r19
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or,= %r2,%r2,%r2
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or,ev %r2,%r2,%r2
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ldo R%sys_call_table64(%r1), %r19
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#else
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load32 sys_call_table, %r19
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@ -379,10 +379,10 @@ tracesys_next:
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extrd,u %r19,63,1,%r2 /* W hidden in bottom bit */
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ldil L%sys_call_table, %r1
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or,= %r2,%r2,%r2
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addil L%(sys_call_table64-sys_call_table), %r1
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or,ev %r2,%r2,%r2
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ldil L%sys_call_table64, %r1
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ldo R%sys_call_table(%r1), %r19
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or,= %r2,%r2,%r2
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or,ev %r2,%r2,%r2
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ldo R%sys_call_table64(%r1), %r19
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#else
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load32 sys_call_table, %r19
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@ -1327,6 +1327,8 @@ ENTRY(sys_call_table)
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END(sys_call_table)
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#ifdef CONFIG_64BIT
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#undef __SYSCALL_WITH_COMPAT
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#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native)
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.align 8
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ENTRY(sys_call_table64)
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#include <asm/syscall_table_64.h> /* 64-bit syscalls */
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