diff options
Diffstat (limited to 'arch/x86/kernel/entry_32.S')
-rw-r--r-- | arch/x86/kernel/entry_32.S | 47 |
1 files changed, 14 insertions, 33 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 7b784f4ef1e4..01ccf9b71473 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S | |||
@@ -56,6 +56,7 @@ | |||
56 | #include <asm/irq_vectors.h> | 56 | #include <asm/irq_vectors.h> |
57 | #include <asm/cpufeature.h> | 57 | #include <asm/cpufeature.h> |
58 | #include <asm/alternative-asm.h> | 58 | #include <asm/alternative-asm.h> |
59 | #include <asm/asm.h> | ||
59 | 60 | ||
60 | /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this. */ | 61 | /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this. */ |
61 | #include <linux/elf-em.h> | 62 | #include <linux/elf-em.h> |
@@ -151,10 +152,8 @@ | |||
151 | .pushsection .fixup, "ax" | 152 | .pushsection .fixup, "ax" |
152 | 99: movl $0, (%esp) | 153 | 99: movl $0, (%esp) |
153 | jmp 98b | 154 | jmp 98b |
154 | .section __ex_table, "a" | ||
155 | .align 4 | ||
156 | .long 98b, 99b | ||
157 | .popsection | 155 | .popsection |
156 | _ASM_EXTABLE(98b,99b) | ||
158 | .endm | 157 | .endm |
159 | 158 | ||
160 | .macro PTGS_TO_GS | 159 | .macro PTGS_TO_GS |
@@ -164,10 +163,8 @@ | |||
164 | .pushsection .fixup, "ax" | 163 | .pushsection .fixup, "ax" |
165 | 99: movl $0, PT_GS(%esp) | 164 | 99: movl $0, PT_GS(%esp) |
166 | jmp 98b | 165 | jmp 98b |
167 | .section __ex_table, "a" | ||
168 | .align 4 | ||
169 | .long 98b, 99b | ||
170 | .popsection | 166 | .popsection |
167 | _ASM_EXTABLE(98b,99b) | ||
171 | .endm | 168 | .endm |
172 | 169 | ||
173 | .macro GS_TO_REG reg | 170 | .macro GS_TO_REG reg |
@@ -249,12 +246,10 @@ | |||
249 | jmp 2b | 246 | jmp 2b |
250 | 6: movl $0, (%esp) | 247 | 6: movl $0, (%esp) |
251 | jmp 3b | 248 | jmp 3b |
252 | .section __ex_table, "a" | ||
253 | .align 4 | ||
254 | .long 1b, 4b | ||
255 | .long 2b, 5b | ||
256 | .long 3b, 6b | ||
257 | .popsection | 249 | .popsection |
250 | _ASM_EXTABLE(1b,4b) | ||
251 | _ASM_EXTABLE(2b,5b) | ||
252 | _ASM_EXTABLE(3b,6b) | ||
258 | POP_GS_EX | 253 | POP_GS_EX |
259 | .endm | 254 | .endm |
260 | 255 | ||
@@ -415,10 +410,7 @@ sysenter_past_esp: | |||
415 | jae syscall_fault | 410 | jae syscall_fault |
416 | 1: movl (%ebp),%ebp | 411 | 1: movl (%ebp),%ebp |
417 | movl %ebp,PT_EBP(%esp) | 412 | movl %ebp,PT_EBP(%esp) |
418 | .section __ex_table,"a" | 413 | _ASM_EXTABLE(1b,syscall_fault) |
419 | .align 4 | ||
420 | .long 1b,syscall_fault | ||
421 | .previous | ||
422 | 414 | ||
423 | GET_THREAD_INFO(%ebp) | 415 | GET_THREAD_INFO(%ebp) |
424 | 416 | ||
@@ -485,10 +477,8 @@ sysexit_audit: | |||
485 | .pushsection .fixup,"ax" | 477 | .pushsection .fixup,"ax" |
486 | 2: movl $0,PT_FS(%esp) | 478 | 2: movl $0,PT_FS(%esp) |
487 | jmp 1b | 479 | jmp 1b |
488 | .section __ex_table,"a" | ||
489 | .align 4 | ||
490 | .long 1b,2b | ||
491 | .popsection | 480 | .popsection |
481 | _ASM_EXTABLE(1b,2b) | ||
492 | PTGS_TO_GS_EX | 482 | PTGS_TO_GS_EX |
493 | ENDPROC(ia32_sysenter_target) | 483 | ENDPROC(ia32_sysenter_target) |
494 | 484 | ||
@@ -543,10 +533,7 @@ ENTRY(iret_exc) | |||
543 | pushl $do_iret_error | 533 | pushl $do_iret_error |
544 | jmp error_code | 534 | jmp error_code |
545 | .previous | 535 | .previous |
546 | .section __ex_table,"a" | 536 | _ASM_EXTABLE(irq_return,iret_exc) |
547 | .align 4 | ||
548 | .long irq_return,iret_exc | ||
549 | .previous | ||
550 | 537 | ||
551 | CFI_RESTORE_STATE | 538 | CFI_RESTORE_STATE |
552 | ldt_ss: | 539 | ldt_ss: |
@@ -901,10 +888,7 @@ END(device_not_available) | |||
901 | #ifdef CONFIG_PARAVIRT | 888 | #ifdef CONFIG_PARAVIRT |
902 | ENTRY(native_iret) | 889 | ENTRY(native_iret) |
903 | iret | 890 | iret |
904 | .section __ex_table,"a" | 891 | _ASM_EXTABLE(native_iret, iret_exc) |
905 | .align 4 | ||
906 | .long native_iret, iret_exc | ||
907 | .previous | ||
908 | END(native_iret) | 892 | END(native_iret) |
909 | 893 | ||
910 | ENTRY(native_irq_enable_sysexit) | 894 | ENTRY(native_irq_enable_sysexit) |
@@ -1093,13 +1077,10 @@ ENTRY(xen_failsafe_callback) | |||
1093 | movl %eax,16(%esp) | 1077 | movl %eax,16(%esp) |
1094 | jmp 4b | 1078 | jmp 4b |
1095 | .previous | 1079 | .previous |
1096 | .section __ex_table,"a" | 1080 | _ASM_EXTABLE(1b,6b) |
1097 | .align 4 | 1081 | _ASM_EXTABLE(2b,7b) |
1098 | .long 1b,6b | 1082 | _ASM_EXTABLE(3b,8b) |
1099 | .long 2b,7b | 1083 | _ASM_EXTABLE(4b,9b) |
1100 | .long 3b,8b | ||
1101 | .long 4b,9b | ||
1102 | .previous | ||
1103 | ENDPROC(xen_failsafe_callback) | 1084 | ENDPROC(xen_failsafe_callback) |
1104 | 1085 | ||
1105 | BUILD_INTERRUPT3(xen_hvm_callback_vector, XEN_HVM_EVTCHN_CALLBACK, | 1086 | BUILD_INTERRUPT3(xen_hvm_callback_vector, XEN_HVM_EVTCHN_CALLBACK, |