diff options
Diffstat (limited to 'arch/x86_64/ia32/ia32entry.S')
| -rw-r--r-- | arch/x86_64/ia32/ia32entry.S | 43 |
1 files changed, 36 insertions, 7 deletions
diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S index e0eb0c712fe91..58f5bfb52c63e 100644 --- a/arch/x86_64/ia32/ia32entry.S +++ b/arch/x86_64/ia32/ia32entry.S @@ -35,6 +35,18 @@ movq %rax,R8(%rsp) .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 + /* * 32bit SYSENTER instruction entry. * @@ -55,7 +67,7 @@ * with the int 0x80 path. */ ENTRY(ia32_sysenter_target) - CFI_STARTPROC simple + CFI_STARTPROC32 simple CFI_DEF_CFA rsp,0 CFI_REGISTER rsp,rbp swapgs @@ -92,6 +104,7 @@ ENTRY(ia32_sysenter_target) .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) CFI_REMEMBER_STATE jnz sysenter_tracesys @@ -105,6 +118,7 @@ sysenter_do_call: cli testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10) jnz int_ret_from_sys_call + andl $~TS_COMPAT,threadinfo_status(%r10) /* clear IF, that popfq doesn't enable interrupts early */ andl $~0x200,EFLAGS-R11(%rsp) RESTORE_ARGS 1,24,1,1,1,1 @@ -161,7 +175,7 @@ sysenter_tracesys: * with the int 0x80 path. */ ENTRY(ia32_cstar_target) - CFI_STARTPROC simple + CFI_STARTPROC32 simple CFI_DEF_CFA rsp,0 CFI_REGISTER rip,rcx /*CFI_REGISTER rflags,r11*/ @@ -191,6 +205,7 @@ ENTRY(ia32_cstar_target) .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) CFI_REMEMBER_STATE jnz cstar_tracesys @@ -204,6 +219,7 @@ cstar_do_call: cli testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10) jnz int_ret_from_sys_call + andl $~TS_COMPAT,threadinfo_status(%r10) RESTORE_ARGS 1,-ARG_SKIP,1,1,1 movl RIP-ARGOFFSET(%rsp),%ecx CFI_REGISTER rip,rcx @@ -276,6 +292,7 @@ ENTRY(ia32_syscall) 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) jnz ia32_tracesys ia32_do_syscall: @@ -318,7 +335,7 @@ quiet_ni_syscall: jmp ia32_ptregs_common .endm - CFI_STARTPROC + CFI_STARTPROC32 PTREGSCALL stub32_rt_sigreturn, sys32_rt_sigreturn, %rdi PTREGSCALL stub32_sigreturn, sys32_sigreturn, %rdi @@ -333,15 +350,26 @@ quiet_ni_syscall: ENTRY(ia32_ptregs_common) popq %r11 - CFI_ADJUST_CFA_OFFSET -8 - CFI_REGISTER rip, r11 + CFI_ENDPROC + CFI_STARTPROC32 simple + 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 - .data + .section .rodata,"a" .align 8 .globl ia32_sys_call_table ia32_sys_call_table: @@ -608,7 +636,7 @@ ia32_sys_call_table: .quad sys_epoll_wait .quad sys_remap_file_pages .quad sys_set_tid_address - .quad sys32_timer_create + .quad compat_sys_timer_create .quad compat_sys_timer_settime /* 260 */ .quad compat_sys_timer_gettime .quad sys_timer_getoverrun @@ -643,6 +671,7 @@ ia32_sys_call_table: .quad sys_inotify_init .quad sys_inotify_add_watch .quad sys_inotify_rm_watch + .quad sys_migrate_pages ia32_syscall_end: .rept IA32_NR_syscalls-(ia32_syscall_end-ia32_sys_call_table)/8 .quad ni_syscall |