|  | /* | 
|  | * Compatibility mode system call entry point for x86-64. | 
|  | * | 
|  | * Copyright 2000-2002 Andi Kleen, SuSE Labs. | 
|  | */ | 
|  |  | 
|  | #include <asm/dwarf2.h> | 
|  | #include <asm/calling.h> | 
|  | #include <asm/asm-offsets.h> | 
|  | #include <asm/current.h> | 
|  | #include <asm/errno.h> | 
|  | #include <asm/ia32_unistd.h> | 
|  | #include <asm/thread_info.h> | 
|  | #include <asm/segment.h> | 
|  | #include <asm/irqflags.h> | 
|  | #include <linux/linkage.h> | 
|  |  | 
|  | /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */ | 
|  | #include <linux/elf-em.h> | 
|  | #define AUDIT_ARCH_I386		(EM_386|__AUDIT_ARCH_LE) | 
|  | #define __AUDIT_ARCH_LE	   0x40000000 | 
|  |  | 
|  | #ifndef CONFIG_AUDITSYSCALL | 
|  | #define sysexit_audit ia32_ret_from_sys_call | 
|  | #define sysretl_audit ia32_ret_from_sys_call | 
|  | #endif | 
|  |  | 
|  | .section .entry.text, "ax" | 
|  |  | 
|  | #define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8) | 
|  |  | 
|  | .macro IA32_ARG_FIXUP noebp=0 | 
|  | movl	%edi,%r8d | 
|  | .if \noebp | 
|  | .else | 
|  | movl	%ebp,%r9d | 
|  | .endif | 
|  | xchg	%ecx,%esi | 
|  | movl	%ebx,%edi | 
|  | movl	%edx,%edx	/* zero extension */ | 
|  | .endm | 
|  |  | 
|  | /* clobbers %eax */ | 
|  | .macro  CLEAR_RREGS offset=0, _r9=rax | 
|  | xorl 	%eax,%eax | 
|  | movq	%rax,\offset+R11(%rsp) | 
|  | movq	%rax,\offset+R10(%rsp) | 
|  | movq	%\_r9,\offset+R9(%rsp) | 
|  | movq	%rax,\offset+R8(%rsp) | 
|  | .endm | 
|  |  | 
|  | /* | 
|  | * Reload arg registers from stack in case ptrace changed them. | 
|  | * We don't reload %eax because syscall_trace_enter() returned | 
|  | * the %rax value we should see.  Instead, we just truncate that | 
|  | * value to 32 bits again as we did on entry from user mode. | 
|  | * If it's a new value set by user_regset during entry tracing, | 
|  | * this matches the normal truncation of the user-mode value. | 
|  | * If it's -1 to make us punt the syscall, then (u32)-1 is still | 
|  | * an appropriately invalid value. | 
|  | */ | 
|  | .macro LOAD_ARGS32 offset, _r9=0 | 
|  | .if \_r9 | 
|  | movl \offset+16(%rsp),%r9d | 
|  | .endif | 
|  | movl \offset+40(%rsp),%ecx | 
|  | movl \offset+48(%rsp),%edx | 
|  | movl \offset+56(%rsp),%esi | 
|  | movl \offset+64(%rsp),%edi | 
|  | movl %eax,%eax			/* zero extension */ | 
|  | .endm | 
|  |  | 
|  | .macro CFI_STARTPROC32 simple | 
|  | CFI_STARTPROC	\simple | 
|  | CFI_UNDEFINED	r8 | 
|  | CFI_UNDEFINED	r9 | 
|  | CFI_UNDEFINED	r10 | 
|  | CFI_UNDEFINED	r11 | 
|  | CFI_UNDEFINED	r12 | 
|  | CFI_UNDEFINED	r13 | 
|  | CFI_UNDEFINED	r14 | 
|  | CFI_UNDEFINED	r15 | 
|  | .endm | 
|  |  | 
|  | #ifdef CONFIG_PARAVIRT | 
|  | ENTRY(native_usergs_sysret32) | 
|  | swapgs | 
|  | sysretl | 
|  | ENDPROC(native_usergs_sysret32) | 
|  |  | 
|  | ENTRY(native_irq_enable_sysexit) | 
|  | swapgs | 
|  | sti | 
|  | sysexit | 
|  | ENDPROC(native_irq_enable_sysexit) | 
|  | #endif | 
|  |  | 
|  | /* | 
|  | * 32bit SYSENTER instruction entry. | 
|  | * | 
|  | * Arguments: | 
|  | * %eax	System call number. | 
|  | * %ebx Arg1 | 
|  | * %ecx Arg2 | 
|  | * %edx Arg3 | 
|  | * %esi Arg4 | 
|  | * %edi Arg5 | 
|  | * %ebp user stack | 
|  | * 0(%ebp) Arg6 | 
|  | * | 
|  | * Interrupts off. | 
|  | * | 
|  | * This is purely a fast path. For anything complicated we use the int 0x80 | 
|  | * path below.	Set up a complete hardware stack frame to share code | 
|  | * with the int 0x80 path. | 
|  | */ | 
|  | ENTRY(ia32_sysenter_target) | 
|  | CFI_STARTPROC32	simple | 
|  | CFI_SIGNAL_FRAME | 
|  | CFI_DEF_CFA	rsp,0 | 
|  | CFI_REGISTER	rsp,rbp | 
|  | SWAPGS_UNSAFE_STACK | 
|  | movq	PER_CPU_VAR(kernel_stack), %rsp | 
|  | addq	$(KERNEL_STACK_OFFSET),%rsp | 
|  | /* | 
|  | * No need to follow this irqs on/off section: the syscall | 
|  | * disabled irqs, here we enable it straight after entry: | 
|  | */ | 
|  | ENABLE_INTERRUPTS(CLBR_NONE) | 
|  | movl	%ebp,%ebp		/* zero extension */ | 
|  | pushq_cfi $__USER32_DS | 
|  | /*CFI_REL_OFFSET ss,0*/ | 
|  | pushq_cfi %rbp | 
|  | CFI_REL_OFFSET rsp,0 | 
|  | pushfq_cfi | 
|  | /*CFI_REL_OFFSET rflags,0*/ | 
|  | movl	8*3-THREAD_SIZE+TI_sysenter_return(%rsp), %r10d | 
|  | CFI_REGISTER rip,r10 | 
|  | pushq_cfi $__USER32_CS | 
|  | /*CFI_REL_OFFSET cs,0*/ | 
|  | movl	%eax, %eax | 
|  | pushq_cfi %r10 | 
|  | CFI_REL_OFFSET rip,0 | 
|  | pushq_cfi %rax | 
|  | cld | 
|  | SAVE_ARGS 0,1,0 | 
|  | /* no need to do an access_ok check here because rbp has been | 
|  | 32bit zero extended */ | 
|  | 1:	movl	(%rbp),%ebp | 
|  | .section __ex_table,"a" | 
|  | .quad 1b,ia32_badarg | 
|  | .previous | 
|  | GET_THREAD_INFO(%r10) | 
|  | orl    $TS_COMPAT,TI_status(%r10) | 
|  | testl  $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) | 
|  | CFI_REMEMBER_STATE | 
|  | jnz  sysenter_tracesys | 
|  | cmpq	$(IA32_NR_syscalls-1),%rax | 
|  | ja	ia32_badsys | 
|  | sysenter_do_call: | 
|  | IA32_ARG_FIXUP | 
|  | sysenter_dispatch: | 
|  | call	*ia32_sys_call_table(,%rax,8) | 
|  | movq	%rax,RAX-ARGOFFSET(%rsp) | 
|  | GET_THREAD_INFO(%r10) | 
|  | DISABLE_INTERRUPTS(CLBR_NONE) | 
|  | TRACE_IRQS_OFF | 
|  | testl	$_TIF_ALLWORK_MASK,TI_flags(%r10) | 
|  | jnz	sysexit_audit | 
|  | sysexit_from_sys_call: | 
|  | andl    $~TS_COMPAT,TI_status(%r10) | 
|  | /* clear IF, that popfq doesn't enable interrupts early */ | 
|  | andl  $~0x200,EFLAGS-R11(%rsp) | 
|  | movl	RIP-R11(%rsp),%edx		/* User %eip */ | 
|  | CFI_REGISTER rip,rdx | 
|  | RESTORE_ARGS 0,24,0,0,0,0 | 
|  | xorq	%r8,%r8 | 
|  | xorq	%r9,%r9 | 
|  | xorq	%r10,%r10 | 
|  | xorq	%r11,%r11 | 
|  | popfq_cfi | 
|  | /*CFI_RESTORE rflags*/ | 
|  | popq_cfi %rcx				/* User %esp */ | 
|  | CFI_REGISTER rsp,rcx | 
|  | TRACE_IRQS_ON | 
|  | ENABLE_INTERRUPTS_SYSEXIT32 | 
|  |  | 
|  | #ifdef CONFIG_AUDITSYSCALL | 
|  | .macro auditsys_entry_common | 
|  | movl %esi,%r9d			/* 6th arg: 4th syscall arg */ | 
|  | movl %edx,%r8d			/* 5th arg: 3rd syscall arg */ | 
|  | /* (already in %ecx)		   4th arg: 2nd syscall arg */ | 
|  | movl %ebx,%edx			/* 3rd arg: 1st syscall arg */ | 
|  | movl %eax,%esi			/* 2nd arg: syscall number */ | 
|  | movl $AUDIT_ARCH_I386,%edi	/* 1st arg: audit arch */ | 
|  | call audit_syscall_entry | 
|  | movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall number */ | 
|  | cmpq $(IA32_NR_syscalls-1),%rax | 
|  | ja ia32_badsys | 
|  | movl %ebx,%edi			/* reload 1st syscall arg */ | 
|  | movl RCX-ARGOFFSET(%rsp),%esi	/* reload 2nd syscall arg */ | 
|  | movl RDX-ARGOFFSET(%rsp),%edx	/* reload 3rd syscall arg */ | 
|  | movl RSI-ARGOFFSET(%rsp),%ecx	/* reload 4th syscall arg */ | 
|  | movl RDI-ARGOFFSET(%rsp),%r8d	/* reload 5th syscall arg */ | 
|  | .endm | 
|  |  | 
|  | .macro auditsys_exit exit | 
|  | testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10) | 
|  | jnz ia32_ret_from_sys_call | 
|  | TRACE_IRQS_ON | 
|  | sti | 
|  | movl %eax,%esi		/* second arg, syscall return value */ | 
|  | cmpl $0,%eax		/* is it < 0? */ | 
|  | setl %al		/* 1 if so, 0 if not */ | 
|  | movzbl %al,%edi		/* zero-extend that into %edi */ | 
|  | inc %edi /* first arg, 0->1(AUDITSC_SUCCESS), 1->2(AUDITSC_FAILURE) */ | 
|  | call audit_syscall_exit | 
|  | GET_THREAD_INFO(%r10) | 
|  | movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall return value */ | 
|  | movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi | 
|  | cli | 
|  | TRACE_IRQS_OFF | 
|  | testl %edi,TI_flags(%r10) | 
|  | jz \exit | 
|  | CLEAR_RREGS -ARGOFFSET | 
|  | jmp int_with_check | 
|  | .endm | 
|  |  | 
|  | sysenter_auditsys: | 
|  | CFI_RESTORE_STATE | 
|  | auditsys_entry_common | 
|  | movl %ebp,%r9d			/* reload 6th syscall arg */ | 
|  | jmp sysenter_dispatch | 
|  |  | 
|  | sysexit_audit: | 
|  | auditsys_exit sysexit_from_sys_call | 
|  | #endif | 
|  |  | 
|  | sysenter_tracesys: | 
|  | #ifdef CONFIG_AUDITSYSCALL | 
|  | testl	$(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10) | 
|  | jz	sysenter_auditsys | 
|  | #endif | 
|  | SAVE_REST | 
|  | CLEAR_RREGS | 
|  | movq	$-ENOSYS,RAX(%rsp)/* ptrace can change this for a bad syscall */ | 
|  | movq	%rsp,%rdi        /* &pt_regs -> arg1 */ | 
|  | call	syscall_trace_enter | 
|  | LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */ | 
|  | RESTORE_REST | 
|  | cmpq	$(IA32_NR_syscalls-1),%rax | 
|  | ja	int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */ | 
|  | jmp	sysenter_do_call | 
|  | CFI_ENDPROC | 
|  | ENDPROC(ia32_sysenter_target) | 
|  |  | 
|  | /* | 
|  | * 32bit SYSCALL instruction entry. | 
|  | * | 
|  | * Arguments: | 
|  | * %eax	System call number. | 
|  | * %ebx Arg1 | 
|  | * %ecx return EIP | 
|  | * %edx Arg3 | 
|  | * %esi Arg4 | 
|  | * %edi Arg5 | 
|  | * %ebp Arg2    [note: not saved in the stack frame, should not be touched] | 
|  | * %esp user stack | 
|  | * 0(%esp) Arg6 | 
|  | * | 
|  | * Interrupts off. | 
|  | * | 
|  | * This is purely a fast path. For anything complicated we use the int 0x80 | 
|  | * path below.	Set up a complete hardware stack frame to share code | 
|  | * with the int 0x80 path. | 
|  | */ | 
|  | ENTRY(ia32_cstar_target) | 
|  | CFI_STARTPROC32	simple | 
|  | CFI_SIGNAL_FRAME | 
|  | CFI_DEF_CFA	rsp,KERNEL_STACK_OFFSET | 
|  | CFI_REGISTER	rip,rcx | 
|  | /*CFI_REGISTER	rflags,r11*/ | 
|  | SWAPGS_UNSAFE_STACK | 
|  | movl	%esp,%r8d | 
|  | CFI_REGISTER	rsp,r8 | 
|  | movq	PER_CPU_VAR(kernel_stack),%rsp | 
|  | /* | 
|  | * No need to follow this irqs on/off section: the syscall | 
|  | * disabled irqs and here we enable it straight after entry: | 
|  | */ | 
|  | ENABLE_INTERRUPTS(CLBR_NONE) | 
|  | SAVE_ARGS 8,0,0 | 
|  | movl 	%eax,%eax	/* zero extension */ | 
|  | movq	%rax,ORIG_RAX-ARGOFFSET(%rsp) | 
|  | movq	%rcx,RIP-ARGOFFSET(%rsp) | 
|  | CFI_REL_OFFSET rip,RIP-ARGOFFSET | 
|  | movq	%rbp,RCX-ARGOFFSET(%rsp) /* this lies slightly to ptrace */ | 
|  | movl	%ebp,%ecx | 
|  | movq	$__USER32_CS,CS-ARGOFFSET(%rsp) | 
|  | movq	$__USER32_DS,SS-ARGOFFSET(%rsp) | 
|  | movq	%r11,EFLAGS-ARGOFFSET(%rsp) | 
|  | /*CFI_REL_OFFSET rflags,EFLAGS-ARGOFFSET*/ | 
|  | movq	%r8,RSP-ARGOFFSET(%rsp) | 
|  | CFI_REL_OFFSET rsp,RSP-ARGOFFSET | 
|  | /* no need to do an access_ok check here because r8 has been | 
|  | 32bit zero extended */ | 
|  | /* hardware stack frame is complete now */ | 
|  | 1:	movl	(%r8),%r9d | 
|  | .section __ex_table,"a" | 
|  | .quad 1b,ia32_badarg | 
|  | .previous | 
|  | GET_THREAD_INFO(%r10) | 
|  | orl   $TS_COMPAT,TI_status(%r10) | 
|  | testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) | 
|  | CFI_REMEMBER_STATE | 
|  | jnz   cstar_tracesys | 
|  | cmpq $IA32_NR_syscalls-1,%rax | 
|  | ja  ia32_badsys | 
|  | cstar_do_call: | 
|  | IA32_ARG_FIXUP 1 | 
|  | cstar_dispatch: | 
|  | call *ia32_sys_call_table(,%rax,8) | 
|  | movq %rax,RAX-ARGOFFSET(%rsp) | 
|  | GET_THREAD_INFO(%r10) | 
|  | DISABLE_INTERRUPTS(CLBR_NONE) | 
|  | TRACE_IRQS_OFF | 
|  | testl $_TIF_ALLWORK_MASK,TI_flags(%r10) | 
|  | jnz sysretl_audit | 
|  | sysretl_from_sys_call: | 
|  | andl $~TS_COMPAT,TI_status(%r10) | 
|  | RESTORE_ARGS 0,-ARG_SKIP,0,0,0 | 
|  | movl RIP-ARGOFFSET(%rsp),%ecx | 
|  | CFI_REGISTER rip,rcx | 
|  | movl EFLAGS-ARGOFFSET(%rsp),%r11d | 
|  | /*CFI_REGISTER rflags,r11*/ | 
|  | xorq	%r10,%r10 | 
|  | xorq	%r9,%r9 | 
|  | xorq	%r8,%r8 | 
|  | TRACE_IRQS_ON | 
|  | movl RSP-ARGOFFSET(%rsp),%esp | 
|  | CFI_RESTORE rsp | 
|  | USERGS_SYSRET32 | 
|  |  | 
|  | #ifdef CONFIG_AUDITSYSCALL | 
|  | cstar_auditsys: | 
|  | CFI_RESTORE_STATE | 
|  | movl %r9d,R9-ARGOFFSET(%rsp)	/* register to be clobbered by call */ | 
|  | auditsys_entry_common | 
|  | movl R9-ARGOFFSET(%rsp),%r9d	/* reload 6th syscall arg */ | 
|  | jmp cstar_dispatch | 
|  |  | 
|  | sysretl_audit: | 
|  | auditsys_exit sysretl_from_sys_call | 
|  | #endif | 
|  |  | 
|  | cstar_tracesys: | 
|  | #ifdef CONFIG_AUDITSYSCALL | 
|  | testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10) | 
|  | jz cstar_auditsys | 
|  | #endif | 
|  | xchgl %r9d,%ebp | 
|  | SAVE_REST | 
|  | CLEAR_RREGS 0, r9 | 
|  | movq $-ENOSYS,RAX(%rsp)	/* ptrace can change this for a bad syscall */ | 
|  | movq %rsp,%rdi        /* &pt_regs -> arg1 */ | 
|  | call syscall_trace_enter | 
|  | LOAD_ARGS32 ARGOFFSET, 1  /* reload args from stack in case ptrace changed it */ | 
|  | RESTORE_REST | 
|  | xchgl %ebp,%r9d | 
|  | cmpq $(IA32_NR_syscalls-1),%rax | 
|  | ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */ | 
|  | jmp cstar_do_call | 
|  | END(ia32_cstar_target) | 
|  |  | 
|  | ia32_badarg: | 
|  | movq $-EFAULT,%rax | 
|  | jmp ia32_sysret | 
|  | CFI_ENDPROC | 
|  |  | 
|  | /* | 
|  | * Emulated IA32 system calls via int 0x80. | 
|  | * | 
|  | * Arguments: | 
|  | * %eax	System call number. | 
|  | * %ebx Arg1 | 
|  | * %ecx Arg2 | 
|  | * %edx Arg3 | 
|  | * %esi Arg4 | 
|  | * %edi Arg5 | 
|  | * %ebp Arg6    [note: not saved in the stack frame, should not be touched] | 
|  | * | 
|  | * Notes: | 
|  | * Uses the same stack frame as the x86-64 version. | 
|  | * All registers except %eax must be saved (but ptrace may violate that) | 
|  | * Arguments are zero extended. For system calls that want sign extension and | 
|  | * take long arguments a wrapper is needed. Most calls can just be called | 
|  | * directly. | 
|  | * Assumes it is only called from user space and entered with interrupts off. | 
|  | */ | 
|  |  | 
|  | ENTRY(ia32_syscall) | 
|  | CFI_STARTPROC32	simple | 
|  | CFI_SIGNAL_FRAME | 
|  | CFI_DEF_CFA	rsp,SS+8-RIP | 
|  | /*CFI_REL_OFFSET	ss,SS-RIP*/ | 
|  | CFI_REL_OFFSET	rsp,RSP-RIP | 
|  | /*CFI_REL_OFFSET	rflags,EFLAGS-RIP*/ | 
|  | /*CFI_REL_OFFSET	cs,CS-RIP*/ | 
|  | CFI_REL_OFFSET	rip,RIP-RIP | 
|  | PARAVIRT_ADJUST_EXCEPTION_FRAME | 
|  | SWAPGS | 
|  | /* | 
|  | * No need to follow this irqs on/off section: the syscall | 
|  | * disabled irqs and here we enable it straight after entry: | 
|  | */ | 
|  | ENABLE_INTERRUPTS(CLBR_NONE) | 
|  | movl %eax,%eax | 
|  | pushq_cfi %rax | 
|  | cld | 
|  | /* note the registers are not zero extended to the sf. | 
|  | this could be a problem. */ | 
|  | SAVE_ARGS 0,1,0 | 
|  | GET_THREAD_INFO(%r10) | 
|  | orl   $TS_COMPAT,TI_status(%r10) | 
|  | testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) | 
|  | jnz ia32_tracesys | 
|  | cmpq $(IA32_NR_syscalls-1),%rax | 
|  | ja ia32_badsys | 
|  | ia32_do_call: | 
|  | IA32_ARG_FIXUP | 
|  | call *ia32_sys_call_table(,%rax,8) # xxx: rip relative | 
|  | ia32_sysret: | 
|  | movq %rax,RAX-ARGOFFSET(%rsp) | 
|  | ia32_ret_from_sys_call: | 
|  | CLEAR_RREGS -ARGOFFSET | 
|  | jmp int_ret_from_sys_call | 
|  |  | 
|  | ia32_tracesys: | 
|  | SAVE_REST | 
|  | CLEAR_RREGS | 
|  | movq $-ENOSYS,RAX(%rsp)	/* ptrace can change this for a bad syscall */ | 
|  | movq %rsp,%rdi        /* &pt_regs -> arg1 */ | 
|  | call syscall_trace_enter | 
|  | LOAD_ARGS32 ARGOFFSET  /* reload args from stack in case ptrace changed it */ | 
|  | RESTORE_REST | 
|  | cmpq $(IA32_NR_syscalls-1),%rax | 
|  | ja  int_ret_from_sys_call	/* ia32_tracesys has set RAX(%rsp) */ | 
|  | jmp ia32_do_call | 
|  | END(ia32_syscall) | 
|  |  | 
|  | ia32_badsys: | 
|  | movq $0,ORIG_RAX-ARGOFFSET(%rsp) | 
|  | movq $-ENOSYS,%rax | 
|  | jmp ia32_sysret | 
|  |  | 
|  | quiet_ni_syscall: | 
|  | movq $-ENOSYS,%rax | 
|  | ret | 
|  | CFI_ENDPROC | 
|  |  | 
|  | .macro PTREGSCALL label, func, arg | 
|  | .globl \label | 
|  | \label: | 
|  | leaq \func(%rip),%rax | 
|  | leaq -ARGOFFSET+8(%rsp),\arg	/* 8 for return address */ | 
|  | jmp  ia32_ptregs_common | 
|  | .endm | 
|  |  | 
|  | CFI_STARTPROC32 | 
|  |  | 
|  | PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi | 
|  | PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi | 
|  | PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx | 
|  | PTREGSCALL stub32_execve, sys32_execve, %rcx | 
|  | PTREGSCALL stub32_fork, sys_fork, %rdi | 
|  | PTREGSCALL stub32_clone, sys32_clone, %rdx | 
|  | PTREGSCALL stub32_vfork, sys_vfork, %rdi | 
|  | PTREGSCALL stub32_iopl, sys_iopl, %rsi | 
|  |  | 
|  | ENTRY(ia32_ptregs_common) | 
|  | popq %r11 | 
|  | CFI_ENDPROC | 
|  | CFI_STARTPROC32	simple | 
|  | CFI_SIGNAL_FRAME | 
|  | CFI_DEF_CFA	rsp,SS+8-ARGOFFSET | 
|  | CFI_REL_OFFSET	rax,RAX-ARGOFFSET | 
|  | CFI_REL_OFFSET	rcx,RCX-ARGOFFSET | 
|  | CFI_REL_OFFSET	rdx,RDX-ARGOFFSET | 
|  | CFI_REL_OFFSET	rsi,RSI-ARGOFFSET | 
|  | CFI_REL_OFFSET	rdi,RDI-ARGOFFSET | 
|  | CFI_REL_OFFSET	rip,RIP-ARGOFFSET | 
|  | /*	CFI_REL_OFFSET	cs,CS-ARGOFFSET*/ | 
|  | /*	CFI_REL_OFFSET	rflags,EFLAGS-ARGOFFSET*/ | 
|  | CFI_REL_OFFSET	rsp,RSP-ARGOFFSET | 
|  | /*	CFI_REL_OFFSET	ss,SS-ARGOFFSET*/ | 
|  | SAVE_REST | 
|  | call *%rax | 
|  | RESTORE_REST | 
|  | jmp  ia32_sysret	/* misbalances the return cache */ | 
|  | CFI_ENDPROC | 
|  | END(ia32_ptregs_common) | 
|  |  | 
|  | .section .rodata,"a" | 
|  | .align 8 | 
|  | ia32_sys_call_table: | 
|  | .quad sys_restart_syscall | 
|  | .quad sys_exit | 
|  | .quad stub32_fork | 
|  | .quad sys_read | 
|  | .quad sys_write | 
|  | .quad compat_sys_open		/* 5 */ | 
|  | .quad sys_close | 
|  | .quad sys32_waitpid | 
|  | .quad sys_creat | 
|  | .quad sys_link | 
|  | .quad sys_unlink		/* 10 */ | 
|  | .quad stub32_execve | 
|  | .quad sys_chdir | 
|  | .quad compat_sys_time | 
|  | .quad sys_mknod | 
|  | .quad sys_chmod		/* 15 */ | 
|  | .quad sys_lchown16 | 
|  | .quad quiet_ni_syscall			/* old break syscall holder */ | 
|  | .quad sys_stat | 
|  | .quad sys32_lseek | 
|  | .quad sys_getpid		/* 20 */ | 
|  | .quad compat_sys_mount	/* mount  */ | 
|  | .quad sys_oldumount	/* old_umount  */ | 
|  | .quad sys_setuid16 | 
|  | .quad sys_getuid16 | 
|  | .quad compat_sys_stime	/* stime */		/* 25 */ | 
|  | .quad compat_sys_ptrace	/* ptrace */ | 
|  | .quad sys_alarm | 
|  | .quad sys_fstat	/* (old)fstat */ | 
|  | .quad sys_pause | 
|  | .quad compat_sys_utime	/* 30 */ | 
|  | .quad quiet_ni_syscall	/* old stty syscall holder */ | 
|  | .quad quiet_ni_syscall	/* old gtty syscall holder */ | 
|  | .quad sys_access | 
|  | .quad sys_nice | 
|  | .quad quiet_ni_syscall	/* 35 */	/* old ftime syscall holder */ | 
|  | .quad sys_sync | 
|  | .quad sys32_kill | 
|  | .quad sys_rename | 
|  | .quad sys_mkdir | 
|  | .quad sys_rmdir		/* 40 */ | 
|  | .quad sys_dup | 
|  | .quad sys_pipe | 
|  | .quad compat_sys_times | 
|  | .quad quiet_ni_syscall			/* old prof syscall holder */ | 
|  | .quad sys_brk		/* 45 */ | 
|  | .quad sys_setgid16 | 
|  | .quad sys_getgid16 | 
|  | .quad sys_signal | 
|  | .quad sys_geteuid16 | 
|  | .quad sys_getegid16	/* 50 */ | 
|  | .quad sys_acct | 
|  | .quad sys_umount			/* new_umount */ | 
|  | .quad quiet_ni_syscall			/* old lock syscall holder */ | 
|  | .quad compat_sys_ioctl | 
|  | .quad compat_sys_fcntl64		/* 55 */ | 
|  | .quad quiet_ni_syscall			/* old mpx syscall holder */ | 
|  | .quad sys_setpgid | 
|  | .quad quiet_ni_syscall			/* old ulimit syscall holder */ | 
|  | .quad sys_olduname | 
|  | .quad sys_umask		/* 60 */ | 
|  | .quad sys_chroot | 
|  | .quad compat_sys_ustat | 
|  | .quad sys_dup2 | 
|  | .quad sys_getppid | 
|  | .quad sys_getpgrp		/* 65 */ | 
|  | .quad sys_setsid | 
|  | .quad sys32_sigaction | 
|  | .quad sys_sgetmask | 
|  | .quad sys_ssetmask | 
|  | .quad sys_setreuid16	/* 70 */ | 
|  | .quad sys_setregid16 | 
|  | .quad sys32_sigsuspend | 
|  | .quad compat_sys_sigpending | 
|  | .quad sys_sethostname | 
|  | .quad compat_sys_setrlimit	/* 75 */ | 
|  | .quad compat_sys_old_getrlimit	/* old_getrlimit */ | 
|  | .quad compat_sys_getrusage | 
|  | .quad compat_sys_gettimeofday | 
|  | .quad compat_sys_settimeofday | 
|  | .quad sys_getgroups16	/* 80 */ | 
|  | .quad sys_setgroups16 | 
|  | .quad compat_sys_old_select | 
|  | .quad sys_symlink | 
|  | .quad sys_lstat | 
|  | .quad sys_readlink		/* 85 */ | 
|  | .quad sys_uselib | 
|  | .quad sys_swapon | 
|  | .quad sys_reboot | 
|  | .quad compat_sys_old_readdir | 
|  | .quad sys32_mmap		/* 90 */ | 
|  | .quad sys_munmap | 
|  | .quad sys_truncate | 
|  | .quad sys_ftruncate | 
|  | .quad sys_fchmod | 
|  | .quad sys_fchown16		/* 95 */ | 
|  | .quad sys_getpriority | 
|  | .quad sys_setpriority | 
|  | .quad quiet_ni_syscall			/* old profil syscall holder */ | 
|  | .quad compat_sys_statfs | 
|  | .quad compat_sys_fstatfs		/* 100 */ | 
|  | .quad sys_ioperm | 
|  | .quad compat_sys_socketcall | 
|  | .quad sys_syslog | 
|  | .quad compat_sys_setitimer | 
|  | .quad compat_sys_getitimer	/* 105 */ | 
|  | .quad compat_sys_newstat | 
|  | .quad compat_sys_newlstat | 
|  | .quad compat_sys_newfstat | 
|  | .quad sys_uname | 
|  | .quad stub32_iopl		/* 110 */ | 
|  | .quad sys_vhangup | 
|  | .quad quiet_ni_syscall	/* old "idle" system call */ | 
|  | .quad sys32_vm86_warning	/* vm86old */ | 
|  | .quad compat_sys_wait4 | 
|  | .quad sys_swapoff		/* 115 */ | 
|  | .quad compat_sys_sysinfo | 
|  | .quad sys32_ipc | 
|  | .quad sys_fsync | 
|  | .quad stub32_sigreturn | 
|  | .quad stub32_clone		/* 120 */ | 
|  | .quad sys_setdomainname | 
|  | .quad sys_newuname | 
|  | .quad sys_modify_ldt | 
|  | .quad compat_sys_adjtimex | 
|  | .quad sys32_mprotect		/* 125 */ | 
|  | .quad compat_sys_sigprocmask | 
|  | .quad quiet_ni_syscall		/* create_module */ | 
|  | .quad sys_init_module | 
|  | .quad sys_delete_module | 
|  | .quad quiet_ni_syscall		/* 130  get_kernel_syms */ | 
|  | .quad sys32_quotactl | 
|  | .quad sys_getpgid | 
|  | .quad sys_fchdir | 
|  | .quad quiet_ni_syscall	/* bdflush */ | 
|  | .quad sys_sysfs		/* 135 */ | 
|  | .quad sys_personality | 
|  | .quad quiet_ni_syscall	/* for afs_syscall */ | 
|  | .quad sys_setfsuid16 | 
|  | .quad sys_setfsgid16 | 
|  | .quad sys_llseek		/* 140 */ | 
|  | .quad compat_sys_getdents | 
|  | .quad compat_sys_select | 
|  | .quad sys_flock | 
|  | .quad sys_msync | 
|  | .quad compat_sys_readv		/* 145 */ | 
|  | .quad compat_sys_writev | 
|  | .quad sys_getsid | 
|  | .quad sys_fdatasync | 
|  | .quad compat_sys_sysctl	/* sysctl */ | 
|  | .quad sys_mlock		/* 150 */ | 
|  | .quad sys_munlock | 
|  | .quad sys_mlockall | 
|  | .quad sys_munlockall | 
|  | .quad sys_sched_setparam | 
|  | .quad sys_sched_getparam   /* 155 */ | 
|  | .quad sys_sched_setscheduler | 
|  | .quad sys_sched_getscheduler | 
|  | .quad sys_sched_yield | 
|  | .quad sys_sched_get_priority_max | 
|  | .quad sys_sched_get_priority_min  /* 160 */ | 
|  | .quad sys32_sched_rr_get_interval | 
|  | .quad compat_sys_nanosleep | 
|  | .quad sys_mremap | 
|  | .quad sys_setresuid16 | 
|  | .quad sys_getresuid16	/* 165 */ | 
|  | .quad sys32_vm86_warning	/* vm86 */ | 
|  | .quad quiet_ni_syscall	/* query_module */ | 
|  | .quad sys_poll | 
|  | .quad quiet_ni_syscall /* old nfsservctl */ | 
|  | .quad sys_setresgid16	/* 170 */ | 
|  | .quad sys_getresgid16 | 
|  | .quad sys_prctl | 
|  | .quad stub32_rt_sigreturn | 
|  | .quad sys32_rt_sigaction | 
|  | .quad sys32_rt_sigprocmask	/* 175 */ | 
|  | .quad sys32_rt_sigpending | 
|  | .quad compat_sys_rt_sigtimedwait | 
|  | .quad sys32_rt_sigqueueinfo | 
|  | .quad sys_rt_sigsuspend | 
|  | .quad sys32_pread		/* 180 */ | 
|  | .quad sys32_pwrite | 
|  | .quad sys_chown16 | 
|  | .quad sys_getcwd | 
|  | .quad sys_capget | 
|  | .quad sys_capset | 
|  | .quad stub32_sigaltstack | 
|  | .quad sys32_sendfile | 
|  | .quad quiet_ni_syscall		/* streams1 */ | 
|  | .quad quiet_ni_syscall		/* streams2 */ | 
|  | .quad stub32_vfork            /* 190 */ | 
|  | .quad compat_sys_getrlimit | 
|  | .quad sys_mmap_pgoff | 
|  | .quad sys32_truncate64 | 
|  | .quad sys32_ftruncate64 | 
|  | .quad sys32_stat64		/* 195 */ | 
|  | .quad sys32_lstat64 | 
|  | .quad sys32_fstat64 | 
|  | .quad sys_lchown | 
|  | .quad sys_getuid | 
|  | .quad sys_getgid		/* 200 */ | 
|  | .quad sys_geteuid | 
|  | .quad sys_getegid | 
|  | .quad sys_setreuid | 
|  | .quad sys_setregid | 
|  | .quad sys_getgroups	/* 205 */ | 
|  | .quad sys_setgroups | 
|  | .quad sys_fchown | 
|  | .quad sys_setresuid | 
|  | .quad sys_getresuid | 
|  | .quad sys_setresgid	/* 210 */ | 
|  | .quad sys_getresgid | 
|  | .quad sys_chown | 
|  | .quad sys_setuid | 
|  | .quad sys_setgid | 
|  | .quad sys_setfsuid		/* 215 */ | 
|  | .quad sys_setfsgid | 
|  | .quad sys_pivot_root | 
|  | .quad sys_mincore | 
|  | .quad sys_madvise | 
|  | .quad compat_sys_getdents64	/* 220 getdents64 */ | 
|  | .quad compat_sys_fcntl64 | 
|  | .quad quiet_ni_syscall		/* tux */ | 
|  | .quad quiet_ni_syscall    	/* security */ | 
|  | .quad sys_gettid | 
|  | .quad sys32_readahead	/* 225 */ | 
|  | .quad sys_setxattr | 
|  | .quad sys_lsetxattr | 
|  | .quad sys_fsetxattr | 
|  | .quad sys_getxattr | 
|  | .quad sys_lgetxattr	/* 230 */ | 
|  | .quad sys_fgetxattr | 
|  | .quad sys_listxattr | 
|  | .quad sys_llistxattr | 
|  | .quad sys_flistxattr | 
|  | .quad sys_removexattr	/* 235 */ | 
|  | .quad sys_lremovexattr | 
|  | .quad sys_fremovexattr | 
|  | .quad sys_tkill | 
|  | .quad sys_sendfile64 | 
|  | .quad compat_sys_futex		/* 240 */ | 
|  | .quad compat_sys_sched_setaffinity | 
|  | .quad compat_sys_sched_getaffinity | 
|  | .quad sys_set_thread_area | 
|  | .quad sys_get_thread_area | 
|  | .quad compat_sys_io_setup	/* 245 */ | 
|  | .quad sys_io_destroy | 
|  | .quad compat_sys_io_getevents | 
|  | .quad compat_sys_io_submit | 
|  | .quad sys_io_cancel | 
|  | .quad sys32_fadvise64		/* 250 */ | 
|  | .quad quiet_ni_syscall 	/* free_huge_pages */ | 
|  | .quad sys_exit_group | 
|  | .quad sys32_lookup_dcookie | 
|  | .quad sys_epoll_create | 
|  | .quad sys_epoll_ctl		/* 255 */ | 
|  | .quad sys_epoll_wait | 
|  | .quad sys_remap_file_pages | 
|  | .quad sys_set_tid_address | 
|  | .quad compat_sys_timer_create | 
|  | .quad compat_sys_timer_settime	/* 260 */ | 
|  | .quad compat_sys_timer_gettime | 
|  | .quad sys_timer_getoverrun | 
|  | .quad sys_timer_delete | 
|  | .quad compat_sys_clock_settime | 
|  | .quad compat_sys_clock_gettime	/* 265 */ | 
|  | .quad compat_sys_clock_getres | 
|  | .quad compat_sys_clock_nanosleep | 
|  | .quad compat_sys_statfs64 | 
|  | .quad compat_sys_fstatfs64 | 
|  | .quad sys_tgkill		/* 270 */ | 
|  | .quad compat_sys_utimes | 
|  | .quad sys32_fadvise64_64 | 
|  | .quad quiet_ni_syscall	/* sys_vserver */ | 
|  | .quad sys_mbind | 
|  | .quad compat_sys_get_mempolicy	/* 275 */ | 
|  | .quad sys_set_mempolicy | 
|  | .quad compat_sys_mq_open | 
|  | .quad sys_mq_unlink | 
|  | .quad compat_sys_mq_timedsend | 
|  | .quad compat_sys_mq_timedreceive	/* 280 */ | 
|  | .quad compat_sys_mq_notify | 
|  | .quad compat_sys_mq_getsetattr | 
|  | .quad compat_sys_kexec_load	/* reserved for kexec */ | 
|  | .quad compat_sys_waitid | 
|  | .quad quiet_ni_syscall		/* 285: sys_altroot */ | 
|  | .quad sys_add_key | 
|  | .quad sys_request_key | 
|  | .quad sys_keyctl | 
|  | .quad sys_ioprio_set | 
|  | .quad sys_ioprio_get		/* 290 */ | 
|  | .quad sys_inotify_init | 
|  | .quad sys_inotify_add_watch | 
|  | .quad sys_inotify_rm_watch | 
|  | .quad sys_migrate_pages | 
|  | .quad compat_sys_openat		/* 295 */ | 
|  | .quad sys_mkdirat | 
|  | .quad sys_mknodat | 
|  | .quad sys_fchownat | 
|  | .quad compat_sys_futimesat | 
|  | .quad sys32_fstatat		/* 300 */ | 
|  | .quad sys_unlinkat | 
|  | .quad sys_renameat | 
|  | .quad sys_linkat | 
|  | .quad sys_symlinkat | 
|  | .quad sys_readlinkat		/* 305 */ | 
|  | .quad sys_fchmodat | 
|  | .quad sys_faccessat | 
|  | .quad compat_sys_pselect6 | 
|  | .quad compat_sys_ppoll | 
|  | .quad sys_unshare		/* 310 */ | 
|  | .quad compat_sys_set_robust_list | 
|  | .quad compat_sys_get_robust_list | 
|  | .quad sys_splice | 
|  | .quad sys32_sync_file_range | 
|  | .quad sys_tee			/* 315 */ | 
|  | .quad compat_sys_vmsplice | 
|  | .quad compat_sys_move_pages | 
|  | .quad sys_getcpu | 
|  | .quad sys_epoll_pwait | 
|  | .quad compat_sys_utimensat	/* 320 */ | 
|  | .quad compat_sys_signalfd | 
|  | .quad sys_timerfd_create | 
|  | .quad sys_eventfd | 
|  | .quad sys32_fallocate | 
|  | .quad compat_sys_timerfd_settime	/* 325 */ | 
|  | .quad compat_sys_timerfd_gettime | 
|  | .quad compat_sys_signalfd4 | 
|  | .quad sys_eventfd2 | 
|  | .quad sys_epoll_create1 | 
|  | .quad sys_dup3				/* 330 */ | 
|  | .quad sys_pipe2 | 
|  | .quad sys_inotify_init1 | 
|  | .quad compat_sys_preadv | 
|  | .quad compat_sys_pwritev | 
|  | .quad compat_sys_rt_tgsigqueueinfo	/* 335 */ | 
|  | .quad sys_perf_event_open | 
|  | .quad compat_sys_recvmmsg | 
|  | .quad sys_fanotify_init | 
|  | .quad sys32_fanotify_mark | 
|  | .quad sys_prlimit64		/* 340 */ | 
|  | .quad sys_name_to_handle_at | 
|  | .quad compat_sys_open_by_handle_at | 
|  | .quad compat_sys_clock_adjtime | 
|  | .quad sys_syncfs | 
|  | .quad compat_sys_sendmmsg	/* 345 */ | 
|  | .quad sys_setns | 
|  | .quad compat_sys_process_vm_readv | 
|  | .quad compat_sys_process_vm_writev | 
|  | ia32_syscall_end: |