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Diffstat (limited to 'arch/x86/entry/entry_32.S')
-rw-r--r--arch/x86/entry/entry_32.S43
1 files changed, 18 insertions, 25 deletions
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index ccb9d32768f3..887420844066 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -268,19 +268,16 @@
1: popl %ds
2: popl %es
3: popl %fs
- addl $(4 + \pop), %esp /* pop the unused "gs" slot */
+4: addl $(4 + \pop), %esp /* pop the unused "gs" slot */
IRET_FRAME
-.pushsection .fixup, "ax"
-4: movl $0, (%esp)
- jmp 1b
-5: movl $0, (%esp)
- jmp 2b
-6: movl $0, (%esp)
- jmp 3b
-.popsection
- _ASM_EXTABLE(1b, 4b)
- _ASM_EXTABLE(2b, 5b)
- _ASM_EXTABLE(3b, 6b)
+
+ /*
+ * There is no _ASM_EXTABLE_TYPE_REG() for ASM, however since this is
+ * ASM the registers are known and we can trivially hard-code them.
+ */
+ _ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_POP_ZERO|EX_REG_DS)
+ _ASM_EXTABLE_TYPE(2b, 3b, EX_TYPE_POP_ZERO|EX_REG_ES)
+ _ASM_EXTABLE_TYPE(3b, 4b, EX_TYPE_POP_ZERO|EX_REG_FS)
.endm
.macro RESTORE_ALL_NMI cr3_reg:req pop=0
@@ -740,7 +737,7 @@ SYM_FUNC_START(schedule_tail_wrapper)
popl %eax
FRAME_END
- ret
+ RET
SYM_FUNC_END(schedule_tail_wrapper)
.popsection
@@ -925,10 +922,8 @@ SYM_FUNC_START(entry_SYSENTER_32)
sti
sysexit
-.pushsection .fixup, "ax"
-2: movl $0, PT_FS(%esp)
- jmp 1b
-.popsection
+2: movl $0, PT_FS(%esp)
+ jmp 1b
_ASM_EXTABLE(1b, 2b)
.Lsysenter_fix_flags:
@@ -996,8 +991,7 @@ restore_all_switch_stack:
*/
iret
-.section .fixup, "ax"
-SYM_CODE_START(asm_iret_error)
+.Lasm_iret_error:
pushl $0 # no error code
pushl $iret_error
@@ -1014,9 +1008,8 @@ SYM_CODE_START(asm_iret_error)
#endif
jmp handle_exception
-SYM_CODE_END(asm_iret_error)
-.previous
- _ASM_EXTABLE(.Lirq_return, asm_iret_error)
+
+ _ASM_EXTABLE(.Lirq_return, .Lasm_iret_error)
SYM_FUNC_END(entry_INT80_32)
.macro FIXUP_ESPFIX_STACK
@@ -1248,14 +1241,14 @@ SYM_CODE_START(asm_exc_nmi)
SYM_CODE_END(asm_exc_nmi)
.pushsection .text, "ax"
-SYM_CODE_START(rewind_stack_do_exit)
+SYM_CODE_START(rewind_stack_and_make_dead)
/* Prevent any naive code from trying to unwind to our caller. */
xorl %ebp, %ebp
movl PER_CPU_VAR(cpu_current_top_of_stack), %esi
leal -TOP_OF_KERNEL_STACK_PADDING-PTREGS_SIZE(%esi), %esp
- call do_exit
+ call make_task_dead
1: jmp 1b
-SYM_CODE_END(rewind_stack_do_exit)
+SYM_CODE_END(rewind_stack_and_make_dead)
.popsection