mirror of
https://github.com/edk2-porting/linux-next.git
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456 lines
9.6 KiB
ArmAsm
456 lines
9.6 KiB
ArmAsm
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02 by Ralf Baechle
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* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
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* Copyright (C) 2001 MIPS Technologies, Inc.
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*/
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#include <linux/config.h>
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#include <linux/errno.h>
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#include <asm/asm.h>
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#include <asm/asmmacro.h>
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#include <asm/mipsregs.h>
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#include <asm/regdef.h>
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#include <asm/stackframe.h>
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#include <asm/asm-offsets.h>
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#include <asm/sysmips.h>
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#include <asm/thread_info.h>
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#include <asm/unistd.h>
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#include <asm/war.h>
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#ifndef CONFIG_BINFMT_ELF32
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/* Neither O32 nor N32, so define handle_sys here */
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#define handle_sys64 handle_sys
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#endif
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.align 5
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NESTED(handle_sys64, PT_SIZE, sp)
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#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32)
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/*
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* When 32-bit compatibility is configured scall_o32.S
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* already did this.
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*/
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.set noat
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SAVE_SOME
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STI
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.set at
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#endif
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dsubu t0, v0, __NR_64_Linux # check syscall number
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sltiu t0, t0, __NR_64_Linux_syscalls + 1
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#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32)
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ld t1, PT_EPC(sp) # skip syscall on return
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daddiu t1, 4 # skip to next instruction
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sd t1, PT_EPC(sp)
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#endif
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beqz t0, illegal_syscall
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dsll t0, v0, 3 # offset into table
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ld t2, (sys_call_table - (__NR_64_Linux * 8))(t0)
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# syscall routine
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sd a3, PT_R26(sp) # save a3 for syscall restarting
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li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
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LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
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and t0, t1, t0
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bnez t0, syscall_trace_entry
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jalr t2 # Do The Real Thing (TM)
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li t0, -EMAXERRNO - 1 # error?
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sltu t0, t0, v0
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sd t0, PT_R7(sp) # set error flag
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beqz t0, 1f
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dnegu v0 # error
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sd v0, PT_R0(sp) # set flag for syscall
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# restarting
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1: sd v0, PT_R2(sp) # result
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n64_syscall_exit:
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local_irq_disable # make sure need_resched and
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# signals dont change between
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# sampling and return
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LONG_L a2, TI_FLAGS($28) # current->work
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li t0, _TIF_ALLWORK_MASK
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and t0, a2, t0
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bnez t0, n64_syscall_exit_work
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j restore_partial
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n64_syscall_exit_work:
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j syscall_exit_work_partial
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/* ------------------------------------------------------------------------ */
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syscall_trace_entry:
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SAVE_STATIC
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move s0, t2
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move a0, sp
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li a1, 0
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jal do_syscall_trace
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ld a0, PT_R4(sp) # Restore argument registers
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ld a1, PT_R5(sp)
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ld a2, PT_R6(sp)
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ld a3, PT_R7(sp)
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ld a4, PT_R8(sp)
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ld a5, PT_R9(sp)
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jalr s0
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li t0, -EMAXERRNO - 1 # error?
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sltu t0, t0, v0
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sd t0, PT_R7(sp) # set error flag
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beqz t0, 1f
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dnegu v0 # error
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sd v0, PT_R0(sp) # set flag for syscall restarting
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1: sd v0, PT_R2(sp) # result
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j syscall_exit
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illegal_syscall:
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/* This also isn't a 64-bit syscall, throw an error. */
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li v0, -ENOSYS # error
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sd v0, PT_R2(sp)
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li t0, 1 # set error flag
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sd t0, PT_R7(sp)
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j n64_syscall_exit
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END(handle_sys64)
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LEAF(mips_atomic_set)
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andi v0, a1, 3 # must be word aligned
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bnez v0, bad_alignment
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LONG_L v1, TI_ADDR_LIMIT($28) # in legal address range?
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LONG_ADDIU a0, a1, 4
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or a0, a0, a1
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and a0, a0, v1
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bltz a0, bad_address
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#ifdef CONFIG_CPU_HAS_LLSC
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/* Ok, this is the ll/sc case. World is sane :-) */
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1: ll v0, (a1)
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move a0, a2
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2: sc a0, (a1)
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#if R10000_LLSC_WAR
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beqzl a0, 1b
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#else
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beqz a0, 1b
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#endif
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.section __ex_table,"a"
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PTR 1b, bad_stack
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PTR 2b, bad_stack
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.previous
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#else
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sw a1, 16(sp)
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sw a2, 20(sp)
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move a0, sp
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move a2, a1
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li a1, 1
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jal do_page_fault
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lw a1, 16(sp)
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lw a2, 20(sp)
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/*
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* At this point the page should be readable and writable unless
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* there was no more memory available.
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*/
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1: lw v0, (a1)
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2: sw a2, (a1)
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.section __ex_table,"a"
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PTR 1b, no_mem
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PTR 2b, no_mem
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.previous
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#endif
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sd zero, PT_R7(sp) # success
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sd v0, PT_R2(sp) # result
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/* Success, so skip usual error handling garbage. */
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li t0, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
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LONG_L a2, TI_FLAGS($28) # syscall tracing enabled?
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and t0, a2, t0
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bnez t0, 1f
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j n64_syscall_exit
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1: SAVE_STATIC
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move a0, sp
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li a1, 1
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jal do_syscall_trace
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j syscall_exit
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no_mem: li v0, -ENOMEM
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jr ra
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bad_address:
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li v0, -EFAULT
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jr ra
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bad_alignment:
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li v0, -EINVAL
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jr ra
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END(mips_atomic_set)
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LEAF(sys_sysmips)
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beq a0, MIPS_ATOMIC_SET, mips_atomic_set
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j _sys_sysmips
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END(sys_sysmips)
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.align 3
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sys_call_table:
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PTR sys_read /* 5000 */
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PTR sys_write
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PTR sys_open
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PTR sys_close
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PTR sys_newstat
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PTR sys_newfstat /* 5005 */
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PTR sys_newlstat
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PTR sys_poll
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PTR sys_lseek
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PTR old_mmap
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PTR sys_mprotect /* 5010 */
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PTR sys_munmap
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PTR sys_brk
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PTR sys_rt_sigaction
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PTR sys_rt_sigprocmask
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PTR sys_ioctl /* 5015 */
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PTR sys_pread64
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PTR sys_pwrite64
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PTR sys_readv
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PTR sys_writev
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PTR sys_access /* 5020 */
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PTR sys_pipe
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PTR sys_select
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PTR sys_sched_yield
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PTR sys_mremap
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PTR sys_msync /* 5025 */
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PTR sys_mincore
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PTR sys_madvise
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PTR sys_shmget
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PTR sys_shmat
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PTR sys_shmctl /* 5030 */
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PTR sys_dup
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PTR sys_dup2
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PTR sys_pause
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PTR sys_nanosleep
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PTR sys_getitimer /* 5035 */
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PTR sys_setitimer
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PTR sys_alarm
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PTR sys_getpid
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PTR sys_sendfile64
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PTR sys_socket /* 5040 */
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PTR sys_connect
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PTR sys_accept
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PTR sys_sendto
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PTR sys_recvfrom
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PTR sys_sendmsg /* 5045 */
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PTR sys_recvmsg
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PTR sys_shutdown
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PTR sys_bind
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PTR sys_listen
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PTR sys_getsockname /* 5050 */
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PTR sys_getpeername
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PTR sys_socketpair
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PTR sys_setsockopt
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PTR sys_getsockopt
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PTR sys_clone /* 5055 */
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PTR sys_fork
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PTR sys_execve
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PTR sys_exit
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PTR sys_wait4
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PTR sys_kill /* 5060 */
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PTR sys_newuname
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PTR sys_semget
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PTR sys_semop
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PTR sys_semctl
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PTR sys_shmdt /* 5065 */
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PTR sys_msgget
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PTR sys_msgsnd
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PTR sys_msgrcv
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PTR sys_msgctl
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PTR sys_fcntl /* 5070 */
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PTR sys_flock
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PTR sys_fsync
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PTR sys_fdatasync
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PTR sys_truncate
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PTR sys_ftruncate /* 5075 */
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PTR sys_getdents
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PTR sys_getcwd
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PTR sys_chdir
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PTR sys_fchdir
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PTR sys_rename /* 5080 */
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PTR sys_mkdir
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PTR sys_rmdir
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PTR sys_creat
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PTR sys_link
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PTR sys_unlink /* 5085 */
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PTR sys_symlink
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PTR sys_readlink
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PTR sys_chmod
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PTR sys_fchmod
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PTR sys_chown /* 5090 */
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PTR sys_fchown
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PTR sys_lchown
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PTR sys_umask
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PTR sys_gettimeofday
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PTR sys_getrlimit /* 5095 */
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PTR sys_getrusage
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PTR sys_sysinfo
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PTR sys_times
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PTR sys_ptrace
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PTR sys_getuid /* 5100 */
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PTR sys_syslog
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PTR sys_getgid
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PTR sys_setuid
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PTR sys_setgid
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PTR sys_geteuid /* 5105 */
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PTR sys_getegid
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PTR sys_setpgid
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PTR sys_getppid
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PTR sys_getpgrp
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PTR sys_setsid /* 5110 */
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PTR sys_setreuid
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PTR sys_setregid
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PTR sys_getgroups
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PTR sys_setgroups
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PTR sys_setresuid /* 5115 */
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PTR sys_getresuid
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PTR sys_setresgid
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PTR sys_getresgid
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PTR sys_getpgid
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PTR sys_setfsuid /* 5120 */
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PTR sys_setfsgid
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PTR sys_getsid
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PTR sys_capget
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PTR sys_capset
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PTR sys_rt_sigpending /* 5125 */
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PTR sys_rt_sigtimedwait
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PTR sys_rt_sigqueueinfo
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PTR sys_rt_sigsuspend
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PTR sys_sigaltstack
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PTR sys_utime /* 5130 */
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PTR sys_mknod
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PTR sys_personality
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PTR sys_ustat
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PTR sys_statfs
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PTR sys_fstatfs /* 5135 */
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PTR sys_sysfs
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PTR sys_getpriority
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PTR sys_setpriority
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PTR sys_sched_setparam
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PTR sys_sched_getparam /* 5140 */
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PTR sys_sched_setscheduler
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PTR sys_sched_getscheduler
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PTR sys_sched_get_priority_max
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PTR sys_sched_get_priority_min
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PTR sys_sched_rr_get_interval /* 5145 */
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PTR sys_mlock
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PTR sys_munlock
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PTR sys_mlockall
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PTR sys_munlockall
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PTR sys_vhangup /* 5150 */
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PTR sys_pivot_root
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PTR sys_sysctl
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PTR sys_prctl
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PTR sys_adjtimex
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PTR sys_setrlimit /* 5155 */
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PTR sys_chroot
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PTR sys_sync
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PTR sys_acct
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PTR sys_settimeofday
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PTR sys_mount /* 5160 */
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PTR sys_umount
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PTR sys_swapon
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PTR sys_swapoff
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PTR sys_reboot
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PTR sys_sethostname /* 5165 */
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PTR sys_setdomainname
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PTR sys_ni_syscall /* was create_module */
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PTR sys_init_module
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PTR sys_delete_module
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PTR sys_ni_syscall /* 5170, was get_kernel_syms */
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PTR sys_ni_syscall /* was query_module */
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PTR sys_quotactl
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PTR sys_nfsservctl
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PTR sys_ni_syscall /* res. for getpmsg */
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PTR sys_ni_syscall /* 5175 for putpmsg */
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PTR sys_ni_syscall /* res. for afs_syscall */
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PTR sys_ni_syscall /* res. for security */
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PTR sys_gettid
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PTR sys_readahead
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PTR sys_setxattr /* 5180 */
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PTR sys_lsetxattr
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PTR sys_fsetxattr
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PTR sys_getxattr
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PTR sys_lgetxattr
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PTR sys_fgetxattr /* 5185 */
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PTR sys_listxattr
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PTR sys_llistxattr
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PTR sys_flistxattr
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PTR sys_removexattr
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PTR sys_lremovexattr /* 5190 */
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PTR sys_fremovexattr
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PTR sys_tkill
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PTR sys_ni_syscall
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PTR sys_futex
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PTR sys_sched_setaffinity /* 5195 */
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PTR sys_sched_getaffinity
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PTR sys_cacheflush
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PTR sys_cachectl
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PTR sys_sysmips
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PTR sys_io_setup /* 5200 */
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PTR sys_io_destroy
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PTR sys_io_getevents
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PTR sys_io_submit
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PTR sys_io_cancel
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PTR sys_exit_group /* 5205 */
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PTR sys_lookup_dcookie
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PTR sys_epoll_create
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PTR sys_epoll_ctl
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PTR sys_epoll_wait
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PTR sys_remap_file_pages /* 5210 */
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PTR sys_rt_sigreturn
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PTR sys_set_tid_address
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PTR sys_restart_syscall
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PTR sys_semtimedop
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PTR sys_fadvise64_64 /* 5215 */
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PTR sys_timer_create
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PTR sys_timer_settime
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PTR sys_timer_gettime
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PTR sys_timer_getoverrun
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PTR sys_timer_delete /* 5220 */
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PTR sys_clock_settime
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PTR sys_clock_gettime
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PTR sys_clock_getres
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PTR sys_clock_nanosleep
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PTR sys_tgkill /* 5225 */
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PTR sys_utimes
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PTR sys_mbind
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PTR sys_ni_syscall /* sys_get_mempolicy */
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PTR sys_ni_syscall /* sys_set_mempolicy */
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PTR sys_mq_open /* 5230 */
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PTR sys_mq_unlink
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PTR sys_mq_timedsend
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PTR sys_mq_timedreceive
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PTR sys_mq_notify
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PTR sys_mq_getsetattr /* 5235 */
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PTR sys_ni_syscall /* sys_vserver */
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PTR sys_waitid
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PTR sys_ni_syscall /* available, was setaltroot */
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PTR sys_add_key
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PTR sys_request_key /* 5240 */
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PTR sys_keyctl
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PTR sys_set_thread_area
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PTR sys_inotify_init
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PTR sys_inotify_add_watch
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PTR sys_inotify_rm_watch /* 5245 */
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