X-Git-Url: http://git.osdn.net/view?p=linuxjm%2FLDP_man-pages.git;a=blobdiff_plain;f=original%2Fman2%2Fsyscall.2;h=044f9876f14bbd54fa882bf9311f074f6f133870;hp=056063401d748a11fc373b55ff081b3a5ddd885b;hb=83f9e5d087c3464d5131604d3c9893479e6228eb;hpb=73cdbcd8b7948c6010c7756d89d5c0445ecba990

diff --git a/original/man2/syscall.2 b/original/man2/syscall.2
index 05606340..044f9876 100644
--- a/original/man2/syscall.2
+++ b/original/man2/syscall.2
@@ -36,8 +36,10 @@
 .\"
 .\" 2002-03-20  Christoph Hellwig <hch@infradead.org>
 .\"	- adopted for Linux
+.\" 2015-01-17, Kees Cook <keescook@chromium.org>
+.\"	Added mips and arm64.
 .\"
-.TH SYSCALL 2 2013-06-21 "Linux" "Linux Programmer's Manual"
+.TH SYSCALL 2 2015-01-22 "Linux" "Linux Programmer's Manual"
 .SH NAME
 syscall \- indirect system call
 .SH SYNOPSIS
@@ -46,7 +48,7 @@ syscall \- indirect system call
 .B #include <unistd.h>
 .BR "#include <sys/syscall.h>   "  "/* For SYS_xxx definitions */"
 
-.BI "int syscall(int " number ", ...);"
+.BI "long syscall(long " number ", ...);"
 .fi
 .SH DESCRIPTION
 .BR syscall ()
@@ -145,7 +147,8 @@ The details for various architectures are listed in the two tables below.
 
 The first table lists the instruction used to transition to kernel mode,
 (which might not be the fastest or best way to transition to the kernel,
-so you might have to refer to the VDSO),
+so you might have to refer to
+.BR vdso (7)),
 the register used to indicate the system call number,
 and the register used to return the system call result.
 .if t \{\
@@ -156,17 +159,30 @@ l l1 l l1 l.
 arch/ABI	instruction	syscall #	retval	Notes
 _
 arm/OABI	swi NR	-	a1	NR is syscall #
-arm/EABI	swi 0x0	r7	r1
+arm/EABI	swi 0x0	r7	r0
+arm64	svc #0	x8	x0
 blackfin	excpt 0x0	P0	R0
 i386	int $0x80	eax	eax
-ia64	break 0x100000	r15	r10/r8
+ia64	break 0x100000	r15	r8	See below
+mips	syscall	v0	v0	See below
 parisc	ble 0x100(%sr2, %r0)	r20	r28
-s390	svc 0	r1	r2	NR may be passed directly with
-s390x	svc 0	r1	r2	"svc NR" if NR is less than 256
+s390	svc 0	r1	r2	See below
+s390x	svc 0	r1	r2	See below
 sparc/32	t 0x10	g1	o0
 sparc/64	t 0x6d	g1	o0
 x86_64	syscall	rax	rax
 .TE
+.PP
+For s390 and s390x, NR (the system call number)
+may be passed directly with "svc NR" if it is less than 256.
+
+On a few architectures,
+a register is used to indicate simple boolean failure of the system call:
+ia64 uses
+.I r10
+for this purpose,
+and mips uses
+.IR a3 .
 .if t \{\
 .in
 .ft P
@@ -177,14 +193,17 @@ The second table shows the registers used to pass the system call arguments.
 .ft CW
 \}
 .TS
-l l l l l l l l.
-arch/ABI	arg1	arg2	arg3	arg4	arg5	arg6	arg7
+l l2 l2 l2 l2 l2 l2 l2 l.
+arch/ABI	arg1	arg2	arg3	arg4	arg5	arg6	arg7	Notes
 _
 arm/OABI	a1	a2	a3	a4	v1	v2	v3
-arm/EABI	r1	r2	r3	r4	r5	r6	r7
+arm/EABI	r0	r1	r2	r3	r4	r5	r6
+arm64	x0	x1	x2	x3	x4	x5	-
 blackfin	R0	R1	R2	R3	R4	R5	-
 i386	ebx	ecx	edx	esi	edi	ebp	-
-ia64	r11	r9	r10	r14	r15	r13	-
+ia64	out0	out1	out2	out3	out4	out5	-
+mips/o32	a0	a1	a2	a3	-	-	-	See below
+mips/n32,64	a0	a1	a2	a3	a4	a5	-
 parisc	r26	r25	r24	r23	r22	r21	-
 s390	r2	r3	r4	r5	r6	r7	-
 s390x	r2	r3	r4	r5	r6	r7	-
@@ -192,6 +211,9 @@ sparc/32	o0	o1	o2	o3	o4	o5	-
 sparc/64	o0	o1	o2	o3	o4	o5	-
 x86_64	rdi	rsi	rdx	r10	r8	r9	-
 .TE
+.PP
+The mips/o32 system call convention passes
+arguments 5 through 8 on the user stack.
 .if t \{\
 .in
 .ft P
@@ -205,6 +227,7 @@ architectures may indiscriminately clobber other registers not listed here.
 #include <unistd.h>
 #include <sys/syscall.h>
 #include <sys/types.h>
+#include <signal.h>
 
 int
 main(int argc, char *argv[])
@@ -212,10 +235,21 @@ main(int argc, char *argv[])
     pid_t tid;
 
     tid = syscall(SYS_gettid);
-    tid = syscall(SYS_tgkill, getpid(), tid);
+    tid = syscall(SYS_tgkill, getpid(), tid, SIGHUP);
 }
 .fi
 .SH SEE ALSO
 .BR _syscall (2),
 .BR intro (2),
-.BR syscalls (2)
+.BR syscalls (2),
+.BR errno (3),
+.BR vdso (7)
+.SH COLOPHON
+This page is part of release 3.79 of the Linux
+.I man-pages
+project.
+A description of the project,
+information about reporting bugs,
+and the latest version of this page,
+can be found at
+\%http://www.kernel.org/doc/man\-pages/.