X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fx86_64%2Fia32%2Fia32entry.S;h=29930d7501bc6b86839ecdd8e05c2faa47c41a51;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=6595b3599c81818bf2966a7bf421e5e9f2bbdb6c;hpb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;p=linux-2.6.git

diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S
index 6595b3599..29930d750 100644
--- a/arch/x86_64/ia32/ia32entry.S
+++ b/arch/x86_64/ia32/ia32entry.S
@@ -13,6 +13,7 @@
 #include <asm/thread_info.h>	
 #include <asm/segment.h>
 #include <asm/vsyscall32.h>
+#include <asm/irqflags.h>
 #include <linux/linkage.h>
 
 #define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
@@ -75,6 +76,10 @@ ENTRY(ia32_sysenter_target)
 	swapgs
 	movq	%gs:pda_kernelstack, %rsp
 	addq	$(PDA_STACKOFFSET),%rsp	
+	/*
+	 * No need to follow this irqs on/off section: the syscall
+	 * disabled irqs, here we enable it straight after entry:
+	 */
 	sti	
  	movl	%ebp,%ebp		/* zero extension */
 	pushq	$__USER32_DS
@@ -98,7 +103,7 @@ ENTRY(ia32_sysenter_target)
 	pushq	%rax
 	CFI_ADJUST_CFA_OFFSET 8
 	cld
-	SAVE_ARGS 0,0,1
+	SAVE_ARGS 0,0,0
  	/* no need to do an access_ok check here because rbp has been
  	   32bit zero extended */ 
 1:	movl	(%rbp),%r9d
@@ -118,6 +123,7 @@ sysenter_do_call:
 	movq	%rax,RAX-ARGOFFSET(%rsp)
 	GET_THREAD_INFO(%r10)
 	cli
+	TRACE_IRQS_OFF
 	testl	$_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
 	jnz	int_ret_from_sys_call
 	andl    $~TS_COMPAT,threadinfo_status(%r10)
@@ -132,6 +138,7 @@ sysenter_do_call:
 	CFI_REGISTER rsp,rcx
 	movl	$VSYSCALL32_SYSEXIT,%edx	/* User %eip */
 	CFI_REGISTER rip,rdx
+	TRACE_IRQS_ON
 	swapgs
 	sti		/* sti only takes effect after the next instruction */
 	/* sysexit */
@@ -155,6 +162,7 @@ sysenter_tracesys:
 	.previous
 	jmp	sysenter_do_call
 	CFI_ENDPROC
+ENDPROC(ia32_sysenter_target)
 
 /*
  * 32bit SYSCALL instruction entry.
@@ -178,13 +186,17 @@ sysenter_tracesys:
  */ 	
 ENTRY(ia32_cstar_target)
 	CFI_STARTPROC32	simple
-	CFI_DEF_CFA	rsp,0
+	CFI_DEF_CFA	rsp,PDA_STACKOFFSET
 	CFI_REGISTER	rip,rcx
 	/*CFI_REGISTER	rflags,r11*/
 	swapgs
 	movl	%esp,%r8d
 	CFI_REGISTER	rsp,r8
 	movq	%gs:pda_kernelstack,%rsp
+	/*
+	 * No need to follow this irqs on/off section: the syscall
+	 * disabled irqs and here we enable it straight after entry:
+	 */
 	sti
 	SAVE_ARGS 8,1,1
 	movl 	%eax,%eax	/* zero extension */
@@ -219,6 +231,7 @@ cstar_do_call:
 	movq %rax,RAX-ARGOFFSET(%rsp)
 	GET_THREAD_INFO(%r10)
 	cli
+	TRACE_IRQS_OFF
 	testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
 	jnz  int_ret_from_sys_call
 	andl $~TS_COMPAT,threadinfo_status(%r10)
@@ -227,6 +240,7 @@ cstar_do_call:
 	CFI_REGISTER rip,rcx
 	movl EFLAGS-ARGOFFSET(%rsp),%r11d	
 	/*CFI_REGISTER rflags,r11*/
+	TRACE_IRQS_ON
 	movl RSP-ARGOFFSET(%rsp),%esp
 	CFI_RESTORE rsp
 	swapgs
@@ -249,6 +263,7 @@ cstar_tracesys:
 	.quad 1b,ia32_badarg
 	.previous
 	jmp cstar_do_call
+END(ia32_cstar_target)
 				
 ia32_badarg:
 	movq $-EFAULT,%rax
@@ -284,7 +299,11 @@ ENTRY(ia32_syscall)
 	/*CFI_REL_OFFSET	rflags,EFLAGS-RIP*/
 	/*CFI_REL_OFFSET	cs,CS-RIP*/
 	CFI_REL_OFFSET	rip,RIP-RIP
-	swapgs	
+	swapgs
+	/*
+	 * No need to follow this irqs on/off section: the syscall
+	 * disabled irqs and here we enable it straight after entry:
+	 */
 	sti
 	movl %eax,%eax
 	pushq %rax
@@ -314,16 +333,13 @@ ia32_tracesys:
 	LOAD_ARGS ARGOFFSET  /* reload args from stack in case ptrace changed it */
 	RESTORE_REST
 	jmp ia32_do_syscall
+END(ia32_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
@@ -370,10 +386,10 @@ ENTRY(ia32_ptregs_common)
 	RESTORE_REST
 	jmp  ia32_sysret	/* misbalances the return cache */
 	CFI_ENDPROC
+END(ia32_ptregs_common)
 
 	.section .rodata,"a"
 	.align 8
-	.globl ia32_sys_call_table
 ia32_sys_call_table:
 	.quad sys_restart_syscall
 	.quad sys_exit
@@ -401,7 +417,7 @@ ia32_sys_call_table:
 	.quad sys_setuid16
 	.quad sys_getuid16
 	.quad compat_sys_stime	/* stime */		/* 25 */
-	.quad sys32_ptrace	/* ptrace */
+	.quad compat_sys_ptrace	/* ptrace */
 	.quad sys_alarm
 	.quad sys_fstat	/* (old)fstat */
 	.quad sys_pause
@@ -695,8 +711,8 @@ ia32_sys_call_table:
 	.quad sys_readlinkat		/* 305 */
 	.quad sys_fchmodat
 	.quad sys_faccessat
-	.quad quiet_ni_syscall		/* pselect6 for now */
-	.quad quiet_ni_syscall		/* ppoll for now */
+	.quad compat_sys_pselect6
+	.quad compat_sys_ppoll
 	.quad sys_unshare		/* 310 */
 	.quad compat_sys_set_robust_list
 	.quad compat_sys_get_robust_list
@@ -704,4 +720,5 @@ ia32_sys_call_table:
 	.quad sys_sync_file_range
 	.quad sys_tee
 	.quad compat_sys_vmsplice
+	.quad compat_sys_move_pages
 ia32_syscall_end: