/*
* This file is subject to the terms and conditions of the GNU General Public
* License . See the file " COPYING " in the main directory of this archive
* for more details .
*
* Copyright ( C ) 1995 , 96 , 97 , 98 , 99 , 2000 , 01 , 02 by Ralf Baechle
* Copyright ( C ) 1999 , 2000 Silicon Graphics , Inc .
* Copyright ( C ) 2001 MIPS Technologies , Inc .
*/
#include <linux/errno.h>
#include <asm/asm.h>
#include <asm/asmmacro.h>
#include <asm/irqflags.h>
#include <asm/mipsregs.h>
#include <asm/regdef.h>
#include <asm/stackframe.h>
#include <asm/asm-offsets.h>
#include <asm/sysmips.h>
#include <asm/thread_info.h>
#include <asm/unistd.h>
#ifndef CONFIG_MIPS32_COMPAT
/* Neither O32 nor N32, so define handle_sys here */
#define handle_sys64 handle_sys
#endif
.align 5
NESTED(handle_sys64, PT_SIZE, sp)
#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32)
/*
* When 32 - bit compatibility is configured scall_o32 . S
* already did this .
*/
.set noat
SAVE_SOME
TRACE_IRQS_ON_RELOAD
STI
.set at
#endif
#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32)
ld t1, PT_EPC(sp) # skip syscall on return
daddiu t1, 4 # skip to next instruction
sd t1, PT_EPC(sp)
#endif
sd a3, PT_R26(sp) # save a3 for syscall restarting
LONG_S v0, TI_SYSCALL($28 ) # Store syscall number
li t1, _TIF_WORK_SYSCALL_ENTRY
LONG_L t0, TI_FLAGS($28 ) # syscall tracing enabled?
and t0, t1, t0
bnez t0, syscall_trace_entry
syscall_common:
dsubu t2, v0, __NR_64_Linux
sltiu t0, t2, __NR_64_Linux_syscalls
beqz t0, illegal_syscall
dsll t0, t2, 3 # offset into table
dla t2, sys_call_table
daddu t0, t2, t0
ld t2, (t0) # syscall routine
beqz t2, illegal_syscall
jalr t2 # Do The Real Thing (TM)
li t0, -EMAXERRNO - 1 # error?
sltu t0, t0, v0
sd t0, PT_R7(sp) # set error flag
beqz t0, 1 f
ld t1, PT_R2(sp) # syscall number
dnegu v0 # error
sd t1, PT_R0(sp) # save it for syscall restarting
1 : sd v0, PT_R2(sp) # result
n64_syscall_exit:
j syscall_exit_partial
/* ------------------------------------------------------------------------ */
syscall_trace_entry:
SAVE_STATIC
move a0, sp
jal syscall_trace_enter
bltz v0, 1 f # seccomp failed? Skip syscall
RESTORE_STATIC
ld v0, PT_R2(sp) # Restore syscall (maybe modified)
ld a0, PT_R4(sp) # Restore argument registers
ld a1, PT_R5(sp)
ld a2, PT_R6(sp)
ld a3, PT_R7(sp)
ld a4, PT_R8(sp)
ld a5, PT_R9(sp)
j syscall_common
1 : j syscall_exit
illegal_syscall:
/* This also isn't a 64-bit syscall, throw an error. */
li v0, ENOSYS # error
sd v0, PT_R2(sp)
li t0, 1 # set error flag
sd t0, PT_R7(sp)
j n64_syscall_exit
END(handle_sys64)
#define __SYSCALL(nr, entry) PTR_WD entry
.align 3
.type sys_call_table, @object
EXPORT(sys_call_table)
#include <asm/syscall_table_n64.h>
Messung V0.5 in Prozent C=92 H=94 G=92
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet am 2026-09-29)
¤
*© Formatika GbR, Deutschland