Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 602 insertions, 0 deletions

diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S
new file mode 100644
index 00000000000..f3ca0db85b5
--- /dev/null
+++ b/arch/x86_64/ia32/ia32entry.S
@@ -0,0 +1,602 @@
+/*
+ * 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/offset.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/vsyscall32.h>
+#include <linux/linkage.h>
+
+	.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
+	xorl 	%eax,%eax
+	movq	%rax,R11(%rsp)
+	movq	%rax,R10(%rsp)
+	movq	%rax,R9(%rsp)
+	movq	%rax,R8(%rsp)
+	.endm
+
+/*
+ * 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_STARTPROC
+	swapgs
+	movq	%gs:pda_kernelstack, %rsp
+	addq	$(PDA_STACKOFFSET),%rsp	
+	sti	
+ 	movl	%ebp,%ebp		/* zero extension */
+	pushq	$__USER32_DS
+	pushq	%rbp
+	pushfq
+	movl	$VSYSCALL32_SYSEXIT, %r10d
+	pushq	$__USER32_CS
+	movl	%eax, %eax
+	pushq	%r10
+	pushq	%rax
+	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),%r9d
+ 	.section __ex_table,"a"
+ 	.quad 1b,ia32_badarg
+ 	.previous	
+	GET_THREAD_INFO(%r10)
+	testl  $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+	jnz  sysenter_tracesys
+sysenter_do_call:	
+	cmpl	$(IA32_NR_syscalls),%eax
+	jae	ia32_badsys
+	IA32_ARG_FIXUP 1
+	call	*ia32_sys_call_table(,%rax,8)
+	movq	%rax,RAX-ARGOFFSET(%rsp)
+	GET_THREAD_INFO(%r10)
+	cli
+	testl	$_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
+	jnz	int_ret_from_sys_call
+	/* clear IF, that popfq doesn't enable interrupts early */
+	andl  $~0x200,EFLAGS-R11(%rsp) 
+	RESTORE_ARGS 1,24,1,1,1,1
+	popfq
+	popq	%rcx				/* User %esp */
+	movl	$VSYSCALL32_SYSEXIT,%edx	/* User %eip */
+	swapgs
+	sti		/* sti only takes effect after the next instruction */
+	/* sysexit */
+	.byte	0xf, 0x35
+
+sysenter_tracesys:
+	SAVE_REST
+	CLEAR_RREGS
+	movq	$-ENOSYS,RAX(%rsp)	/* really needed? */
+	movq	%rsp,%rdi        /* &pt_regs -> arg1 */
+	call	syscall_trace_enter
+	LOAD_ARGS ARGOFFSET  /* reload args from stack in case ptrace changed it */
+	RESTORE_REST
+	movl	%ebp, %ebp
+	/* no need to do an access_ok check here because rbp has been
+	   32bit zero extended */ 
+1:	movl	(%rbp),%r9d
+	.section __ex_table,"a"
+	.quad 1b,ia32_badarg
+	.previous
+	jmp	sysenter_do_call
+	CFI_ENDPROC
+
+/*
+ * 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_STARTPROC
+	swapgs
+	movl	%esp,%r8d
+	movq	%gs:pda_kernelstack,%rsp
+	sti
+	SAVE_ARGS 8,1,1
+	movl 	%eax,%eax	/* zero extension */
+	movq	%rax,ORIG_RAX-ARGOFFSET(%rsp)
+	movq	%rcx,RIP-ARGOFFSET(%rsp)
+	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)
+	movq	%r8,RSP-ARGOFFSET(%rsp)	
+	/* 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)
+	testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+	jnz   cstar_tracesys
+cstar_do_call:	
+	cmpl $IA32_NR_syscalls,%eax
+	jae  ia32_badsys
+	IA32_ARG_FIXUP 1
+	call *ia32_sys_call_table(,%rax,8)
+	movq %rax,RAX-ARGOFFSET(%rsp)
+	GET_THREAD_INFO(%r10)
+	cli
+	testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
+	jnz  int_ret_from_sys_call
+	RESTORE_ARGS 1,-ARG_SKIP,1,1,1
+	movl RIP-ARGOFFSET(%rsp),%ecx
+	movl EFLAGS-ARGOFFSET(%rsp),%r11d	
+	movl RSP-ARGOFFSET(%rsp),%esp
+	swapgs
+	sysretl
+	
+cstar_tracesys:	
+	SAVE_REST
+	CLEAR_RREGS
+	movq $-ENOSYS,RAX(%rsp)	/* really needed? */
+	movq %rsp,%rdi        /* &pt_regs -> arg1 */
+	call syscall_trace_enter
+	LOAD_ARGS ARGOFFSET  /* reload args from stack in case ptrace changed it */
+	RESTORE_REST
+	movl RSP-ARGOFFSET(%rsp), %r8d
+	/* no need to do an access_ok check here because r8 has been
+	   32bit zero extended */ 
+1:	movl	(%r8),%r9d
+	.section __ex_table,"a"
+	.quad 1b,ia32_badarg
+	.previous
+	jmp cstar_do_call
+				
+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_STARTPROC
+	swapgs	
+	sti
+	movl %eax,%eax
+	pushq %rax
+	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)
+	testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+	jnz ia32_tracesys
+ia32_do_syscall:	
+	cmpl $(IA32_NR_syscalls),%eax
+	jae  ia32_badsys
+	IA32_ARG_FIXUP
+	call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
+ia32_sysret:
+	movq %rax,RAX-ARGOFFSET(%rsp)
+	jmp int_ret_from_sys_call 
+
+ia32_tracesys:			 
+	SAVE_REST
+	movq $-ENOSYS,RAX(%rsp)	/* really needed? */
+	movq %rsp,%rdi        /* &pt_regs -> arg1 */
+	call syscall_trace_enter
+	LOAD_ARGS ARGOFFSET  /* reload args from stack in case ptrace changed it */
+	RESTORE_REST
+	jmp ia32_do_syscall
+
+ia32_badsys:
+	movq $0,ORIG_RAX-ARGOFFSET(%rsp)
+	movq $-ENOSYS,RAX-ARGOFFSET(%rsp)
+	jmp int_ret_from_sys_call
+
+ni_syscall:
+	movq %rax,%rdi
+	jmp  sys32_ni_syscall			
+
+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
+
+	PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi
+	PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi
+	PTREGSCALL stub32_sigaltstack, sys32_sigaltstack, %rdx
+	PTREGSCALL stub32_sigsuspend, sys32_sigsuspend, %rcx
+	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
+	PTREGSCALL stub32_rt_sigsuspend, sys_rt_sigsuspend, %rdx
+
+ENTRY(ia32_ptregs_common)
+	CFI_STARTPROC
+	popq %r11
+	SAVE_REST
+	call *%rax
+	RESTORE_REST
+	jmp  ia32_sysret	/* misbalances the return cache */
+	CFI_ENDPROC
+
+	.data
+	.align 8
+	.globl ia32_sys_call_table
+ia32_sys_call_table:
+	.quad sys_restart_syscall
+	.quad sys_exit
+	.quad stub32_fork
+	.quad sys_read
+	.quad sys_write
+	.quad sys32_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 sys32_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 sys32_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 sys32_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 stub32_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 sys32_gettimeofday
+	.quad sys32_settimeofday
+	.quad sys_getgroups16	/* 80 */
+	.quad sys_setgroups16
+	.quad sys32_old_select
+	.quad sys_symlink
+	.quad sys_lstat
+	.quad sys_readlink		/* 85 */
+#ifdef CONFIG_IA32_AOUT
+	.quad sys_uselib
+#else
+	.quad quiet_ni_syscall
+#endif
+	.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 sys32_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 sys32_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 sys_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 sys32_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 sys_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 stub32_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 sys32_mmap2
+	.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 sys_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 sys32_set_thread_area
+	.quad sys32_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 sys_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 sys32_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 quiet_ni_syscall		/* reserved for kexec */
+	.quad compat_sys_waitid
+	.quad quiet_ni_syscall		/* sys_altroot */
+	.quad sys_add_key
+	.quad sys_request_key
+	.quad sys_keyctl
+	/* don't forget to change IA32_NR_syscalls */
+ia32_syscall_end:		
+	.rept IA32_NR_syscalls-(ia32_syscall_end-ia32_sys_call_table)/8
+		.quad ni_syscall
+	.endr