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.
*
CFI_SIGNAL_FRAME
CFI_DEF_CFA rsp,0
CFI_REGISTER rsp,rbp
- swapgs
+ SWAPGS_UNSAFE_STACK
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
+ ENABLE_INTERRUPTS(CLBR_NONE)
movl %ebp,%ebp /* zero extension */
pushq $__USER32_DS
CFI_ADJUST_CFA_OFFSET 8
pushfq
CFI_ADJUST_CFA_OFFSET 8
/*CFI_REL_OFFSET rflags,0*/
- movl 8*3-THREAD_SIZE+threadinfo_sysenter_return(%rsp), %r10d
+ movl 8*3-THREAD_SIZE+TI_sysenter_return(%rsp), %r10d
CFI_REGISTER rip,r10
pushq $__USER32_CS
CFI_ADJUST_CFA_OFFSET 8
.quad 1b,ia32_badarg
.previous
GET_THREAD_INFO(%r10)
- orl $TS_COMPAT,threadinfo_status(%r10)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+ orl $TS_COMPAT,TI_status(%r10)
+ testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP), \
+ TI_flags(%r10)
CFI_REMEMBER_STATE
jnz sysenter_tracesys
sysenter_do_call:
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
GET_THREAD_INFO(%r10)
- cli
+ DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
- testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
+ testl $_TIF_ALLWORK_MASK,TI_flags(%r10)
jnz int_ret_from_sys_call
- andl $~TS_COMPAT,threadinfo_status(%r10)
+ 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_ADJUST_CFA_OFFSET -8
CFI_REGISTER rsp,rcx
TRACE_IRQS_ON
- swapgs
- sti /* sti only takes effect after the next instruction */
- /* sysexit */
- .byte 0xf, 0x35
+ ENABLE_INTERRUPTS_SYSEXIT32
sysenter_tracesys:
CFI_RESTORE_STATE
SAVE_REST
CLEAR_RREGS
movq %r9,R9(%rsp)
- movq $-ENOSYS,RAX(%rsp) /* really needed? */
+ 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
xchgl %ebp,%r9d
+ 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)
CFI_DEF_CFA rsp,PDA_STACKOFFSET
CFI_REGISTER rip,rcx
/*CFI_REGISTER rflags,r11*/
- swapgs
+ SWAPGS_UNSAFE_STACK
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
+ ENABLE_INTERRUPTS(CLBR_NONE)
SAVE_ARGS 8,1,1
movl %eax,%eax /* zero extension */
movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
.quad 1b,ia32_badarg
.previous
GET_THREAD_INFO(%r10)
- orl $TS_COMPAT,threadinfo_status(%r10)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+ orl $TS_COMPAT,TI_status(%r10)
+ testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP), \
+ TI_flags(%r10)
CFI_REMEMBER_STATE
jnz cstar_tracesys
cstar_do_call:
call *ia32_sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
GET_THREAD_INFO(%r10)
- cli
+ DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
- testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
+ testl $_TIF_ALLWORK_MASK,TI_flags(%r10)
jnz int_ret_from_sys_call
- andl $~TS_COMPAT,threadinfo_status(%r10)
+ andl $~TS_COMPAT,TI_status(%r10)
RESTORE_ARGS 1,-ARG_SKIP,1,1,1
movl RIP-ARGOFFSET(%rsp),%ecx
CFI_REGISTER rip,rcx
TRACE_IRQS_ON
movl RSP-ARGOFFSET(%rsp),%esp
CFI_RESTORE rsp
- swapgs
- sysretl
+ USERGS_SYSRET32
cstar_tracesys:
CFI_RESTORE_STATE
SAVE_REST
CLEAR_RREGS
movq %r9,R9(%rsp)
- movq $-ENOSYS,RAX(%rsp) /* really needed? */
+ 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
xchgl %ebp,%r9d
movl RSP-ARGOFFSET(%rsp), %r8d
+ 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)
/*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
+ ENABLE_INTERRUPTS(CLBR_NONE)
movl %eax,%eax
pushq %rax
CFI_ADJUST_CFA_OFFSET 8
this could be a problem. */
SAVE_ARGS 0,0,1
GET_THREAD_INFO(%r10)
- orl $TS_COMPAT,threadinfo_status(%r10)
- testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP),threadinfo_flags(%r10)
+ orl $TS_COMPAT,TI_status(%r10)
+ testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP), \
+ TI_flags(%r10)
jnz ia32_tracesys
ia32_do_syscall:
cmpl $(IA32_NR_syscalls-1),%eax
- ja ia32_badsys
+ ja int_ret_from_sys_call /* ia32_tracesys has set RAX(%rsp) */
IA32_ARG_FIXUP
call *ia32_sys_call_table(,%rax,8) # xxx: rip relative
ia32_sysret:
ia32_tracesys:
SAVE_REST
CLEAR_RREGS
- movq $-ENOSYS,RAX(%rsp) /* really needed? */
+ 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 */
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)
popq %r11
.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
.quad sys_ssetmask
.quad sys_setreuid16 /* 70 */
.quad sys_setregid16
- .quad stub32_sigsuspend
+ .quad sys32_sigsuspend
.quad compat_sys_sigpending
.quad sys_sethostname
.quad compat_sys_setrlimit /* 75 */
.quad sys32_rt_sigpending
.quad compat_sys_rt_sigtimedwait
.quad sys32_rt_sigqueueinfo
- .quad stub32_rt_sigsuspend
+ .quad sys_rt_sigsuspend
.quad sys32_pread /* 180 */
.quad sys32_pwrite
.quad sys_chown16
git.openpandora.org / pandora-kernel.git / blobdiff