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syscall.2: arm64: Fix syscall number register size 

arm64 is currently documented as receiving the syscall number in
x8.

While this is the correct register, the syscall number is a 32-bit
integer.  Bits [63:32] are ignored by the kernel.

So it is more correct to say "w8".

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Dave Martin 2020-05-05 16:24:40 +01:00 committed by Michael Kerrisk
parent f13396bc2d
commit 3862672084
1 changed files with 1 additions and 1 deletions
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man2/syscall.2
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@ -203,7 +203,7 @@ alpha callsys v0 v0 a4 a3 1, 6
arc trap0 r8 r0 - -
arm/OABI swi NR - r0 - - 2
arm/EABI swi 0x0 r7 r0 r1 -
arm64 svc #0 x8 x0 x1 -
arm64 svc #0 w8 x0 x1 -
blackfin excpt 0x0 P0 R0 - -
i386 int $0x80 eax eax edx -
ia64 break 0x100000 r15 r8 r9 r10 1, 6