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authorDavid S. Miller <davem@davemloft.net>2009-11-19 01:19:03 -0500
committerDavid S. Miller <davem@davemloft.net>2009-11-19 01:19:03 -0500
commit3505d1a9fd65e2d3e00827857b6795d9d8983658 (patch)
tree941cfafdb57c427bb6b7ebf6354ee93b2a3693b5 /arch/x86/ia32
parentdfef948ed2ba69cf041840b5e860d6b4e16fa0b1 (diff)
parent66b00a7c93ec782d118d2c03bd599cfd041e80a1 (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts: drivers/net/sfc/sfe4001.c drivers/net/wireless/libertas/cmd.c drivers/staging/Kconfig drivers/staging/Makefile drivers/staging/rtl8187se/Kconfig drivers/staging/rtl8192e/Kconfig
Diffstat (limited to 'arch/x86/ia32')
-rw-r--r--arch/x86/ia32/ia32entry.S41
1 files changed, 25 insertions, 16 deletions
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 11a6c79d5f46..d23b98782653 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -21,8 +21,8 @@
21#define __AUDIT_ARCH_LE 0x40000000 21#define __AUDIT_ARCH_LE 0x40000000
22 22
23#ifndef CONFIG_AUDITSYSCALL 23#ifndef CONFIG_AUDITSYSCALL
24#define sysexit_audit int_ret_from_sys_call 24#define sysexit_audit ia32_ret_from_sys_call
25#define sysretl_audit int_ret_from_sys_call 25#define sysretl_audit ia32_ret_from_sys_call
26#endif 26#endif
27 27
28#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8) 28#define IA32_NR_syscalls ((ia32_syscall_end - ia32_sys_call_table)/8)
@@ -39,12 +39,12 @@
39 .endm 39 .endm
40 40
41 /* clobbers %eax */ 41 /* clobbers %eax */
42 .macro CLEAR_RREGS _r9=rax 42 .macro CLEAR_RREGS offset=0, _r9=rax
43 xorl %eax,%eax 43 xorl %eax,%eax
44 movq %rax,R11(%rsp) 44 movq %rax,\offset+R11(%rsp)
45 movq %rax,R10(%rsp) 45 movq %rax,\offset+R10(%rsp)
46 movq %\_r9,R9(%rsp) 46 movq %\_r9,\offset+R9(%rsp)
47 movq %rax,R8(%rsp) 47 movq %rax,\offset+R8(%rsp)
48 .endm 48 .endm
49 49
50 /* 50 /*
@@ -172,6 +172,10 @@ sysexit_from_sys_call:
172 movl RIP-R11(%rsp),%edx /* User %eip */ 172 movl RIP-R11(%rsp),%edx /* User %eip */
173 CFI_REGISTER rip,rdx 173 CFI_REGISTER rip,rdx
174 RESTORE_ARGS 1,24,1,1,1,1 174 RESTORE_ARGS 1,24,1,1,1,1
175 xorq %r8,%r8
176 xorq %r9,%r9
177 xorq %r10,%r10
178 xorq %r11,%r11
175 popfq 179 popfq
176 CFI_ADJUST_CFA_OFFSET -8 180 CFI_ADJUST_CFA_OFFSET -8
177 /*CFI_RESTORE rflags*/ 181 /*CFI_RESTORE rflags*/
@@ -200,9 +204,9 @@ sysexit_from_sys_call:
200 movl RDI-ARGOFFSET(%rsp),%r8d /* reload 5th syscall arg */ 204 movl RDI-ARGOFFSET(%rsp),%r8d /* reload 5th syscall arg */
201 .endm 205 .endm
202 206
203 .macro auditsys_exit exit,ebpsave=RBP 207 .macro auditsys_exit exit
204 testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10) 208 testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
205 jnz int_ret_from_sys_call 209 jnz ia32_ret_from_sys_call
206 TRACE_IRQS_ON 210 TRACE_IRQS_ON
207 sti 211 sti
208 movl %eax,%esi /* second arg, syscall return value */ 212 movl %eax,%esi /* second arg, syscall return value */
@@ -213,13 +217,13 @@ sysexit_from_sys_call:
213 call audit_syscall_exit 217 call audit_syscall_exit
214 GET_THREAD_INFO(%r10) 218 GET_THREAD_INFO(%r10)
215 movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall return value */ 219 movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall return value */
216 movl \ebpsave-ARGOFFSET(%rsp),%ebp /* reload user register value */
217 movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi 220 movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
218 cli 221 cli
219 TRACE_IRQS_OFF 222 TRACE_IRQS_OFF
220 testl %edi,TI_flags(%r10) 223 testl %edi,TI_flags(%r10)
221 jnz int_with_check 224 jz \exit
222 jmp \exit 225 CLEAR_RREGS -ARGOFFSET
226 jmp int_with_check
223 .endm 227 .endm
224 228
225sysenter_auditsys: 229sysenter_auditsys:
@@ -329,6 +333,9 @@ sysretl_from_sys_call:
329 CFI_REGISTER rip,rcx 333 CFI_REGISTER rip,rcx
330 movl EFLAGS-ARGOFFSET(%rsp),%r11d 334 movl EFLAGS-ARGOFFSET(%rsp),%r11d
331 /*CFI_REGISTER rflags,r11*/ 335 /*CFI_REGISTER rflags,r11*/
336 xorq %r10,%r10
337 xorq %r9,%r9
338 xorq %r8,%r8
332 TRACE_IRQS_ON 339 TRACE_IRQS_ON
333 movl RSP-ARGOFFSET(%rsp),%esp 340 movl RSP-ARGOFFSET(%rsp),%esp
334 CFI_RESTORE rsp 341 CFI_RESTORE rsp
@@ -343,7 +350,7 @@ cstar_auditsys:
343 jmp cstar_dispatch 350 jmp cstar_dispatch
344 351
345sysretl_audit: 352sysretl_audit:
346 auditsys_exit sysretl_from_sys_call, RCX /* user %ebp in RCX slot */ 353 auditsys_exit sysretl_from_sys_call
347#endif 354#endif
348 355
349cstar_tracesys: 356cstar_tracesys:
@@ -353,7 +360,7 @@ cstar_tracesys:
353#endif 360#endif
354 xchgl %r9d,%ebp 361 xchgl %r9d,%ebp
355 SAVE_REST 362 SAVE_REST
356 CLEAR_RREGS r9 363 CLEAR_RREGS 0, r9
357 movq $-ENOSYS,RAX(%rsp) /* ptrace can change this for a bad syscall */ 364 movq $-ENOSYS,RAX(%rsp) /* ptrace can change this for a bad syscall */
358 movq %rsp,%rdi /* &pt_regs -> arg1 */ 365 movq %rsp,%rdi /* &pt_regs -> arg1 */
359 call syscall_trace_enter 366 call syscall_trace_enter
@@ -425,6 +432,8 @@ ia32_do_call:
425 call *ia32_sys_call_table(,%rax,8) # xxx: rip relative 432 call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
426ia32_sysret: 433ia32_sysret:
427 movq %rax,RAX-ARGOFFSET(%rsp) 434 movq %rax,RAX-ARGOFFSET(%rsp)
435ia32_ret_from_sys_call:
436 CLEAR_RREGS -ARGOFFSET
428 jmp int_ret_from_sys_call 437 jmp int_ret_from_sys_call
429 438
430ia32_tracesys: 439ia32_tracesys:
@@ -442,8 +451,8 @@ END(ia32_syscall)
442 451
443ia32_badsys: 452ia32_badsys:
444 movq $0,ORIG_RAX-ARGOFFSET(%rsp) 453 movq $0,ORIG_RAX-ARGOFFSET(%rsp)
445 movq $-ENOSYS,RAX-ARGOFFSET(%rsp) 454 movq $-ENOSYS,%rax
446 jmp int_ret_from_sys_call 455 jmp ia32_sysret
447 456
448quiet_ni_syscall: 457quiet_ni_syscall:
449 movq $-ENOSYS,%rax 458 movq $-ENOSYS,%rax