| /* | 
 |  * 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 | 
 |  | 
 | #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 value it wants us to use in the table lookup. | 
 | 	 */ | 
 | 	.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 | 
 | 	.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	$__USER32_DS | 
 | 	CFI_ADJUST_CFA_OFFSET 8 | 
 | 	/*CFI_REL_OFFSET ss,0*/ | 
 | 	pushq	%rbp | 
 | 	CFI_ADJUST_CFA_OFFSET 8 | 
 | 	CFI_REL_OFFSET rsp,0 | 
 | 	pushfq | 
 | 	CFI_ADJUST_CFA_OFFSET 8 | 
 | 	/*CFI_REL_OFFSET rflags,0*/ | 
 | 	movl	8*3-THREAD_SIZE+TI_sysenter_return(%rsp), %r10d | 
 | 	CFI_REGISTER rip,r10 | 
 | 	pushq	$__USER32_CS | 
 | 	CFI_ADJUST_CFA_OFFSET 8 | 
 | 	/*CFI_REL_OFFSET cs,0*/ | 
 | 	movl	%eax, %eax | 
 | 	pushq	%r10 | 
 | 	CFI_ADJUST_CFA_OFFSET 8 | 
 | 	CFI_REL_OFFSET rip,0 | 
 | 	pushq	%rax | 
 | 	CFI_ADJUST_CFA_OFFSET 8 | 
 | 	cld | 
 | 	SAVE_ARGS 0,0,1 | 
 |  	/* 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 | 
 | 	cmpl	$(IA32_NR_syscalls-1),%eax | 
 | 	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 1,24,1,1,1,1 | 
 | 	xorq	%r8,%r8 | 
 | 	xorq	%r9,%r9 | 
 | 	xorq	%r10,%r10 | 
 | 	xorq	%r11,%r11 | 
 | 	popfq | 
 | 	CFI_ADJUST_CFA_OFFSET -8 | 
 | 	/*CFI_RESTORE rflags*/ | 
 | 	popq	%rcx				/* User %esp */ | 
 | 	CFI_ADJUST_CFA_OFFSET -8 | 
 | 	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 */ | 
 | 	cmpl $(IA32_NR_syscalls-1),%eax | 
 | 	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 | 
 | 	cmpl	$(IA32_NR_syscalls-1),%eax | 
 | 	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 8,1,1 | 
 | 	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 | 
 | 	cmpl $IA32_NR_syscalls-1,%eax | 
 | 	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 1,-ARG_SKIP,1,1,1 | 
 | 	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 | 
 | 	cmpl $(IA32_NR_syscalls-1),%eax | 
 | 	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 %rax | 
 | 	CFI_ADJUST_CFA_OFFSET 8 | 
 | 	cld | 
 | 	/* note the registers are not zero extended to the sf. | 
 | 	   this could be a problem. */ | 
 | 	SAVE_ARGS 0,0,1 | 
 | 	GET_THREAD_INFO(%r10) | 
 | 	orl   $TS_COMPAT,TI_status(%r10) | 
 | 	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10) | 
 | 	jnz ia32_tracesys | 
 | 	cmpl $(IA32_NR_syscalls-1),%eax | 
 | 	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 | 
 | 	cmpl $(IA32_NR_syscalls-1),%eax | 
 | 	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 sys32_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 sys32_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 sys32_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_uname | 
 | 	.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 compat_sys_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 | 
 | ia32_syscall_end: |