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Subject[PATCH] s390 (2/7): syscall numbers > 255.
Date
Add support for system calls with numbers > 255.
diffstat:
arch/s390/kernel/entry.S | 36 ++++--
arch/s390x/kernel/entry.S | 45 +++++---
include/asm-s390/unistd.h | 252 ++++++++++++++++++++++++++-------------------
include/asm-s390x/unistd.h | 252 ++++++++++++++++++++++++++-------------------
4 files changed, 351 insertions(+), 234 deletions(-)
diff -urN linux-2.5.64/arch/s390/kernel/entry.S linux-2.5.64-s390/arch/s390/kernel/entry.S
--- linux-2.5.64/arch/s390/kernel/entry.S Wed Mar 5 04:29:02 2003
+++ linux-2.5.64-s390/arch/s390/kernel/entry.S Fri Mar 7 11:40:25 2003
@@ -18,6 +18,7 @@
#include <asm/ptrace.h>
#include <asm/thread_info.h>
#include <asm/offsets.h>
+#include <asm/unistd.h>

/*
* Stack layout for the system_call stack entry.
@@ -97,8 +98,7 @@
stam %a0,%a15,SP_AREGS(%r15) # store access registers to kst.
mvc SP_AREGS+8(12,%r15),__LC_SAVE_AREA+12 # store ac. regs
mvc SP_PSW(8,%r15),\psworg # move user PSW to stack
- la %r0,\psworg # store trap indication
- st %r0,SP_TRAP(%r15)
+ mvc SP_TRAP(4,%r15),BASED(.L\psworg) # store trap indication
xc 0(4,%r15),0(%r15) # clear back chain
.endm

@@ -179,12 +179,18 @@
SAVE_ALL_BASE
SAVE_ALL __LC_SVC_OLD_PSW,1
lh %r7,0x8a # get svc number from lowcore
- GET_THREAD_INFO # load pointer to task_struct to R9
- sll %r7,2
stosm 24(%r15),0x03 # reenable interrupts
+ GET_THREAD_INFO # load pointer to task_struct to R9
+ sla %r7,2 # *4 and test for svc 0
+ bnz BASED(sysc_do_restart) # svc number > 0
+ # svc 0: system call number in %r1
+ cl %r1,BASED(.Lnr_syscalls)
+ bnl BASED(sysc_do_restart)
+ lr %r7,%r1 # copy svc number to %r7
+ sla %r7,2 # *4
sysc_do_restart:
- l %r8,sys_call_table-entry_base(%r7,%r13) # get system call addr.
tm __TI_flags+3(%r9),_TIF_SYSCALL_TRACE
+ l %r8,sys_call_table-entry_base(%r7,%r13) # get system call addr.
bo BASED(sysc_tracesys)
basr %r14,%r8 # call sys_xxxx
st %r2,SP_R2(%r15) # store return value (change R2 on stack)
@@ -247,7 +253,7 @@
ni __TI_flags+3(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC
stosm 24(%r15),0x03 # reenable interrupts
l %r7,SP_R2(%r15) # load new svc number
- sll %r7,2
+ sla %r2,2
mvc SP_R2(4,%r15),SP_ORIG_R2(%r15) # restore first argument
lm %r2,%r6,SP_R2(%r15) # load svc arguments
b BASED(sysc_do_restart) # restart svc
@@ -617,9 +623,15 @@
.long sys_epoll_wait
.long sys_set_tid_address
.long sys_fadvise64
- .rept 255-253
- .long sys_ni_syscall
- .endr
+ .long sys_timer_create
+ .long sys_timer_settime /* 255 */
+ .long sys_timer_gettime
+ .long sys_timer_getoverrun
+ .long sys_timer_delete
+ .long sys_clock_settime
+ .long sys_clock_gettime
+ .long sys_clock_getres
+ .long sys_clock_nanosleep

/*
* Program check handler routine
@@ -925,6 +937,12 @@
.Lc_pactive: .long PREEMPT_ACTIVE
.Lc0xff: .long 0xff
.Lc256: .long 256
+.Lnr_syscalls: .long NR_syscalls
+.L0x018: .long 0x018
+.L0x020: .long 0x020
+.L0x028: .long 0x028
+.L0x030: .long 0x030
+.L0x038: .long 0x038

/*
* Symbol constants
diff -urN linux-2.5.64/arch/s390x/kernel/entry.S linux-2.5.64-s390/arch/s390x/kernel/entry.S
--- linux-2.5.64/arch/s390x/kernel/entry.S Wed Mar 5 04:29:03 2003
+++ linux-2.5.64-s390/arch/s390x/kernel/entry.S Fri Mar 7 11:40:25 2003
@@ -18,6 +18,7 @@
#include <asm/ptrace.h>
#include <asm/thread_info.h>
#include <asm/offsets.h>
+#include <asm/unistd.h>

/*
* Stack layout for the system_call stack entry.
@@ -60,8 +61,9 @@

.macro SAVE_ALL psworg,sync # system entry macro
stmg %r14,%r15,__LC_SAVE_AREA
- tm \psworg+1,0x01 # test problem state bit
stam %a2,%a4,__LC_SAVE_AREA+16
+ larl %r14,.Lconst
+ tm \psworg+1,0x01 # test problem state bit
.if \sync
jz 1f # skip stack setup save
.else
@@ -69,23 +71,22 @@
lg %r14,__LC_ASYNC_STACK # are we already on the async. stack ?
slgr %r14,%r15
srag %r14,%r14,14
+ larl %r14,.Lconst
jz 1f
lg %r15,__LC_ASYNC_STACK # load async. stack
j 1f
.endif
0: lg %r15,__LC_KERNEL_STACK # problem state -> load ksp
- larl %r14,.Lc_ac
- lam %a2,%a4,0(%r14)
+ lam %a2,%a4,.Lc_ac-.Lconst(%r14)
1: aghi %r15,-SP_SIZE # make room for registers & psw
nill %r15,0xfff8 # align stack pointer to 8
- stmg %r0,%r14,SP_R0(%r15) # store gprs 0-14 to kernel stack
+ stmg %r0,%r13,SP_R0(%r15) # store gprs 0-13 to kernel stack
stg %r2,SP_ORIG_R2(%r15) # store original content of gpr 2
- mvc SP_R14(16,%r15),__LC_SAVE_AREA # move R15 to stack
+ mvc SP_R14(16,%r15),__LC_SAVE_AREA # move r14 and r15 to stack
stam %a0,%a15,SP_AREGS(%r15) # store access registers to kst.
mvc SP_AREGS+8(12,%r15),__LC_SAVE_AREA+16 # store ac. regs
mvc SP_PSW(16,%r15),\psworg # move user PSW to stack
- lhi %r0,\psworg # store trap indication
- st %r0,SP_TRAP(%r15)
+ mvc SP_TRAP(4,%r15),.L\psworg-.Lconst(%r14) # store trap ind.
xc 0(8,%r15),0(%r15) # clear back chain
.endm

@@ -160,11 +161,16 @@
system_call:
SAVE_ALL __LC_SVC_OLD_PSW,1
llgh %r7,__LC_SVC_INT_CODE # get svc number from lowcore
- GET_THREAD_INFO # load pointer to task_struct to R9
stosm 48(%r15),0x03 # reenable interrupts
+ GET_THREAD_INFO # load pointer to task_struct to R9
+ slag %r7,%r7,3 # *8 and test for svc 0
+ jnz sysc_do_restart
+ # svc 0: system call number in %r1
+ clg %r1,.Lnr_syscalls-.Lconst(%r14)
+ jnl sysc_do_restart
+ slag %r7,%r1,3 # svc 0: system call number in %r1
sysc_do_restart:
larl %r10,sys_call_table
- sll %r7,3
tm SP_PSW+3(%r15),0x01 # are we running in 31 bit mode ?
jo sysc_noemu
la %r10,4(%r10) # use 31 bit emulation system calls
@@ -231,6 +237,7 @@
ni __TI_flags+3(%r9),255-_TIF_RESTART_SVC # clear TIF_RESTART_SVC
stosm 48(%r15),0x03 # reenable interrupts
lg %r7,SP_R2(%r15) # load new svc number
+ slag %r7,%r7,3 # *8
mvc SP_R2(8,%r15),SP_ORIG_R2(%r15) # restore first argument
lmg %r2,%r6,SP_R2(%r15) # load svc arguments
j sysc_do_restart # restart svc
@@ -651,9 +658,15 @@
.long SYSCALL(sys_epoll_wait,sys_ni_syscall)
.long SYSCALL(sys_set_tid_address,sys32_set_tid_address_wrapper)
.long SYSCALL(sys_fadvise64,sys_ni_syscall)
- .rept 255-253
- .long SYSCALL(sys_ni_syscall,sys_ni_syscall)
- .endr
+ .long SYSCALL(sys_timer_create,sys_ni_syscall)
+ .long SYSCALL(sys_timer_settime,sys_ni_syscall) /* 255 */
+ .long SYSCALL(sys_timer_gettime,sys_ni_syscall)
+ .long SYSCALL(sys_timer_getoverrun,sys_ni_syscall)
+ .long SYSCALL(sys_timer_delete,sys_ni_syscall)
+ .long SYSCALL(sys_clock_settime,sys_ni_syscall)
+ .long SYSCALL(sys_clock_gettime,sys_ni_syscall)
+ .long SYSCALL(sys_clock_getres,sys_ni_syscall)
+ .long SYSCALL(sys_clock_nanosleep,sys_ni_syscall)

/*
* Program check handler routine
@@ -938,6 +951,12 @@
* Integer constants
*/
.align 4
+.Lconst:
.Lc_ac: .long 0,0,1
.Lc_pactive: .long PREEMPT_ACTIVE
-.Lc256: .quad 256
+.L0x0130: .long 0x0130
+.L0x0140: .long 0x0140
+.L0x0150: .long 0x0150
+.L0x0160: .long 0x0160
+.L0x0170: .long 0x0170
+.Lnr_syscalls: .long NR_syscalls
diff -urN linux-2.5.64/include/asm-s390/unistd.h linux-2.5.64-s390/include/asm-s390/unistd.h
--- linux-2.5.64/include/asm-s390/unistd.h Wed Mar 5 04:29:56 2003
+++ linux-2.5.64-s390/include/asm-s390/unistd.h Fri Mar 7 11:40:25 2003
@@ -249,130 +249,170 @@
#define __NR_epoll_wait 251
#define __NR_set_tid_address 252
#define __NR_fadvise64 253
+#define __NR_timer_create 254
+#define __NR_timer_settime (__NR_timer_create+1)
+#define __NR_timer_gettime (__NR_timer_create+2)
+#define __NR_timer_getoverrun (__NR_timer_create+3)
+#define __NR_timer_delete (__NR_timer_create+4)
+#define __NR_clock_settime (__NR_timer_create+5)
+#define __NR_clock_gettime (__NR_timer_create+6)
+#define __NR_clock_getres (__NR_timer_create+7)
+#define __NR_clock_nanosleep (__NR_timer_create+8)

+#define NR_syscalls 263

/* user-visible error numbers are in the range -1 - -122: see <asm-s390/errno.h> */

-#define __syscall_return(type, res) \
-do { \
- if ((unsigned long)(res) >= (unsigned long)(-125)) { \
- errno = -(res); \
- res = -1; \
- } \
- return (type) (res); \
+#define __syscall_return(type, res) \
+do { \
+ if ((unsigned long)(res) >= (unsigned long)(-125)) { \
+ errno = -(res); \
+ res = -1; \
+ } \
+ return (type) (res); \
} while (0)

-#define _svc_clobber "cc", "memory"
+#define _svc_clobber "1", "cc", "memory"

-#define _syscall0(type,name) \
-type name(void) { \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
-}
-
-#define _syscall1(type,name,type1,arg1) \
-type name(type1 arg1) { \
- register type1 __arg1 asm("2") = arg1; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
-}
-
-#define _syscall2(type,name,type1,arg1,type2,arg2) \
-type name(type1 arg1, type2 arg2) { \
- register type1 __arg1 asm("2") = arg1; \
- register type2 __arg2 asm("3") = arg2; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1), \
- "d" (__arg2) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
+#define _syscall0(type,name) \
+type name(void) { \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lhi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
+}
+
+#define _syscall1(type,name,type1,arg1) \
+type name(type1 arg1) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lhi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
+}
+
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+type name(type1 arg1, type2 arg2) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lhi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1), \
+ "d" (__arg2) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
}

#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)\
-type name(type1 arg1, type2 arg2, type3 arg3) { \
- register type1 __arg1 asm("2") = arg1; \
- register type2 __arg2 asm("3") = arg2; \
- register type3 __arg3 asm("4") = arg3; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1), \
- "d" (__arg2), \
- "d" (__arg3) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
+type name(type1 arg1, type2 arg2, type3 arg3) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register type3 __arg3 asm("4") = arg3; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lhi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1), \
+ "d" (__arg2), \
+ "d" (__arg3) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
}

#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,\
- type4,name4) \
+ type4,name4) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
- register type1 __arg1 asm("2") = arg1; \
- register type2 __arg2 asm("3") = arg2; \
- register type3 __arg3 asm("4") = arg3; \
- register type4 __arg4 asm("5") = arg4; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1), \
- "d" (__arg2), \
- "d" (__arg3), \
- "d" (__arg4) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register type3 __arg3 asm("4") = arg3; \
+ register type4 __arg4 asm("5") = arg4; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lhi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1), \
+ "d" (__arg2), \
+ "d" (__arg3), \
+ "d" (__arg4) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
}

#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,\
- type4,name4,type5,name5) \
+ type4,name4,type5,name5) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5) { \
- register type1 __arg1 asm("2") = arg1; \
- register type2 __arg2 asm("3") = arg2; \
- register type3 __arg3 asm("4") = arg3; \
- register type4 __arg4 asm("5") = arg4; \
- register type5 __arg5 asm("6") = arg5; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1), \
- "d" (__arg2), \
- "d" (__arg3), \
- "d" (__arg4), \
- "d" (__arg5) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
+ type5 arg5) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register type3 __arg3 asm("4") = arg3; \
+ register type4 __arg4 asm("5") = arg4; \
+ register type5 __arg5 asm("6") = arg5; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lhi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1), \
+ "d" (__arg2), \
+ "d" (__arg3), \
+ "d" (__arg4), \
+ "d" (__arg5) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
}

#ifdef __KERNEL_SYSCALLS__
diff -urN linux-2.5.64/include/asm-s390x/unistd.h linux-2.5.64-s390/include/asm-s390x/unistd.h
--- linux-2.5.64/include/asm-s390x/unistd.h Wed Mar 5 04:29:31 2003
+++ linux-2.5.64-s390/include/asm-s390x/unistd.h Fri Mar 7 11:40:25 2003
@@ -216,130 +216,170 @@
#define __NR_epoll_wait 251
#define __NR_set_tid_address 252
#define __NR_fadvise64 253
+#define __NR_timer_create 254
+#define __NR_timer_settime (__NR_timer_create+1)
+#define __NR_timer_gettime (__NR_timer_create+2)
+#define __NR_timer_getoverrun (__NR_timer_create+3)
+#define __NR_timer_delete (__NR_timer_create+4)
+#define __NR_clock_settime (__NR_timer_create+5)
+#define __NR_clock_gettime (__NR_timer_create+6)
+#define __NR_clock_getres (__NR_timer_create+7)
+#define __NR_clock_nanosleep (__NR_timer_create+8)

+#define NR_syscalls 263

/* user-visible error numbers are in the range -1 - -122: see <asm-s390/errno.h> */

-#define __syscall_return(type, res) \
-do { \
- if ((unsigned long)(res) >= (unsigned long)(-125)) { \
- errno = -(res); \
- res = -1; \
- } \
- return (type) (res); \
+#define __syscall_return(type, res) \
+do { \
+ if ((unsigned long)(res) >= (unsigned long)(-125)) { \
+ errno = -(res); \
+ res = -1; \
+ } \
+ return (type) (res); \
} while (0)

-#define _svc_clobber "cc", "memory"
+#define _svc_clobber "1", "cc", "memory"

-#define _syscall0(type,name) \
-type name(void) { \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
-}
-
-#define _syscall1(type,name,type1,arg1) \
-type name(type1 arg1) { \
- register type1 __arg1 asm("2") = arg1; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
-}
-
-#define _syscall2(type,name,type1,arg1,type2,arg2) \
-type name(type1 arg1, type2 arg2) { \
- register type1 __arg1 asm("2") = arg1; \
- register type2 __arg2 asm("3") = arg2; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1), \
- "d" (__arg2) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
+#define _syscall0(type,name) \
+type name(void) { \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lghi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
+}
+
+#define _syscall1(type,name,type1,arg1) \
+type name(type1 arg1) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lghi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
+}
+
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+type name(type1 arg1, type2 arg2) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lghi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1), \
+ "d" (__arg2) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
}

#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)\
-type name(type1 arg1, type2 arg2, type3 arg3) { \
- register type1 __arg1 asm("2") = arg1; \
- register type2 __arg2 asm("3") = arg2; \
- register type3 __arg3 asm("4") = arg3; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1), \
- "d" (__arg2), \
- "d" (__arg3) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
+type name(type1 arg1, type2 arg2, type3 arg3) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register type3 __arg3 asm("4") = arg3; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lghi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1), \
+ "d" (__arg2), \
+ "d" (__arg3) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
}

#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,\
- type4,name4) \
+ type4,name4) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
- register type1 __arg1 asm("2") = arg1; \
- register type2 __arg2 asm("3") = arg2; \
- register type3 __arg3 asm("4") = arg3; \
- register type4 __arg4 asm("5") = arg4; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1), \
- "d" (__arg2), \
- "d" (__arg3), \
- "d" (__arg4) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register type3 __arg3 asm("4") = arg3; \
+ register type4 __arg4 asm("5") = arg4; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lghi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1), \
+ "d" (__arg2), \
+ "d" (__arg3), \
+ "d" (__arg4) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
}

#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,\
- type4,name4,type5,name5) \
+ type4,name4,type5,name5) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
- type5 arg5) { \
- register type1 __arg1 asm("2") = arg1; \
- register type2 __arg2 asm("3") = arg2; \
- register type3 __arg3 asm("4") = arg3; \
- register type4 __arg4 asm("5") = arg4; \
- register type5 __arg5 asm("6") = arg5; \
- register long __svcres asm("2"); \
- long __res; \
- __asm__ __volatile__ ( \
- " svc %b1\n" \
- : "=d" (__svcres) \
- : "i" (__NR_##name), \
- "0" (__arg1), \
- "d" (__arg2), \
- "d" (__arg3), \
- "d" (__arg4), \
- "d" (__arg5) \
- : _svc_clobber ); \
- __res = __svcres; \
- __syscall_return(type,__res); \
+ type5 arg5) { \
+ register type1 __arg1 asm("2") = arg1; \
+ register type2 __arg2 asm("3") = arg2; \
+ register type3 __arg3 asm("4") = arg3; \
+ register type4 __arg4 asm("5") = arg4; \
+ register type5 __arg5 asm("6") = arg5; \
+ register long __svcres asm("2"); \
+ long __res; \
+ __asm__ __volatile__ ( \
+ " .if %b1 < 256\n" \
+ " svc %b1\n" \
+ " .else\n" \
+ " lghi %%r1,%b1\n" \
+ " svc 0\n" \
+ " .endif" \
+ : "=d" (__svcres) \
+ : "i" (__NR_##name), \
+ "0" (__arg1), \
+ "d" (__arg2), \
+ "d" (__arg3), \
+ "d" (__arg4), \
+ "d" (__arg5) \
+ : _svc_clobber ); \
+ __res = __svcres; \
+ __syscall_return(type,__res); \
}

#ifdef __KERNEL_SYSCALLS__
-
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