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ea3d710fe5
Change the N32 debugging ABI to something more sane, and add support
for o32 and n32 debuggers to trace n64 programs.
Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
370 lines
8.5 KiB
ArmAsm
370 lines
8.5 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 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/thread_info.h>
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#include <asm/unistd.h>
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/* This duplicates the definition from <linux/sched.h> */
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#define PT_TRACESYS 0x00000002 /* tracing system calls */
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/* This duplicates the definition from <asm/signal.h> */
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#define SIGILL 4 /* Illegal instruction (ANSI). */
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#ifndef CONFIG_MIPS32_O32
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/* No O32, so define handle_sys here */
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#define handle_sysn32 handle_sys
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#endif
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.align 5
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NESTED(handle_sysn32, PT_SIZE, sp)
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#ifndef CONFIG_MIPS32_O32
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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_N32_Linux # check syscall number
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sltiu t0, t0, __NR_N32_Linux_syscalls + 1
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#ifndef CONFIG_MIPS32_O32
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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, not_n32_scall
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dsll t0, v0, 3 # offset into table
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ld t2, (sysn32_call_table - (__NR_N32_Linux * 8))(t0)
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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, n32_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 restarting
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1: sd v0, PT_R2(sp) # result
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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, n32_syscall_exit_work
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j restore_partial
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n32_syscall_exit_work:
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j syscall_exit_work_partial
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/* ------------------------------------------------------------------------ */
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n32_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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not_n32_scall:
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/* This is not an n32 compatibility syscall, pass it on to
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the n64 syscall handlers. */
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j handle_sys64
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END(handle_sysn32)
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EXPORT(sysn32_call_table)
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PTR sys_read /* 6000 */
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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 /* 6005 */
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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 /* 6010 */
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PTR sys_munmap
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PTR sys_brk
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PTR sys32_rt_sigaction
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PTR sys32_rt_sigprocmask
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PTR compat_sys_ioctl /* 6015 */
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PTR sys_pread64
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PTR sys_pwrite64
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PTR compat_sys_readv
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PTR compat_sys_writev
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PTR sys_access /* 6020 */
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PTR sys_pipe
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PTR compat_sys_select
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PTR sys_sched_yield
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PTR sys_mremap
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PTR sys_msync /* 6025 */
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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 sys32_shmat
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PTR sys_shmctl /* 6030 */
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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 compat_sys_nanosleep
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PTR compat_sys_getitimer /* 6035 */
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PTR compat_sys_setitimer
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PTR sys_alarm
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PTR sys_getpid
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PTR sys32_sendfile
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PTR sys_socket /* 6040 */
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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 compat_sys_sendmsg /* 6045 */
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PTR compat_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 /* 6050 */
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PTR sys_getpeername
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PTR sys_socketpair
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PTR compat_sys_setsockopt
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PTR sys_getsockopt
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PTR sys_clone /* 6055 */
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PTR sys_fork
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PTR sys32_execve
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PTR sys_exit
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PTR compat_sys_wait4
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PTR sys_kill /* 6060 */
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PTR sys32_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 /* 6065 */
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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 compat_sys_fcntl /* 6070 */
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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 /* 6075 */
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PTR sys32_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 /* 6080 */
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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 /* 6085 */
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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 /* 6090 */
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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 sys32_gettimeofday
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PTR compat_sys_getrlimit /* 6095 */
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PTR compat_sys_getrusage
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PTR sys32_sysinfo
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PTR compat_sys_times
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PTR sys32_ptrace
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PTR sys_getuid /* 6100 */
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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 /* 6105 */
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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 /* 6110 */
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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 /* 6115 */
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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 /* 6120 */
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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 sys32_rt_sigpending /* 6125 */
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PTR sysn32_rt_sigtimedwait
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PTR sys_rt_sigqueueinfo
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PTR sys32_rt_sigsuspend
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PTR sys32_sigaltstack
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PTR compat_sys_utime /* 6130 */
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PTR sys_mknod
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PTR sys32_personality
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PTR sys32_ustat
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PTR compat_sys_statfs
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PTR compat_sys_fstatfs /* 6135 */
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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 /* 6140 */
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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 sys32_sched_rr_get_interval /* 6145 */
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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 /* 6150 */
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PTR sys_pivot_root
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PTR sys32_sysctl
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PTR sys_prctl
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PTR sys32_adjtimex
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PTR compat_sys_setrlimit /* 6155 */
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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 sys32_settimeofday
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PTR sys_mount /* 6160 */
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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 /* 6165 */
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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 /* 6170, 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 /* 6175 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 sys32_readahead
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PTR sys_setxattr /* 6180 */
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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 /* 6185 */
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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 /* 6190 */
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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 compat_sys_futex
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PTR compat_sys_sched_setaffinity /* 6195 */
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PTR compat_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 /* 6200 */
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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 /* 6205 */
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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 /* 6210 */
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PTR sysn32_rt_sigreturn
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PTR compat_sys_fcntl64
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PTR sys_set_tid_address
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PTR sys_restart_syscall
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PTR sys_semtimedop /* 6215 */
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PTR sys_fadvise64_64
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PTR compat_sys_statfs64
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PTR compat_sys_fstatfs64
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PTR sys_sendfile64
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PTR sys32_timer_create /* 6220 */
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PTR compat_sys_timer_settime
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PTR compat_sys_timer_gettime
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PTR sys_timer_getoverrun
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PTR sys_timer_delete
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PTR compat_sys_clock_settime /* 6225 */
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PTR compat_sys_clock_gettime
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PTR compat_sys_clock_getres
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PTR compat_sys_clock_nanosleep
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PTR sys_tgkill
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PTR compat_sys_utimes /* 6230 */
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PTR sys_ni_syscall /* 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 compat_sys_mq_open
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PTR sys_mq_unlink /* 6235 */
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PTR compat_sys_mq_timedsend
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PTR compat_sys_mq_timedreceive
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PTR compat_sys_mq_notify
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PTR compat_sys_mq_getsetattr
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PTR sys_ni_syscall /* 6240, sys_vserver */
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PTR sysn32_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
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PTR sys_keyctl /* 6245 */
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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
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