# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1175776843 -3600
# Node ID 95f329bf49ecb6359e2e6f541ad725de1ccb13c3
# Parent f1509862f3e6190e383871ef179d9ef5e6e01099
linux/x86-64: fix unwind information
Mostly adjusting mis-merges dating back to the 2.6.14 merge.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
---
linux-2.6-xen-sparse/arch/x86_64/kernel/entry-xen.S | 61 +++++++++++---------
1 files changed, 36 insertions(+), 25 deletions(-)
diff -r f1509862f3e6 -r 95f329bf49ec
linux-2.6-xen-sparse/arch/x86_64/kernel/entry-xen.S
--- a/linux-2.6-xen-sparse/arch/x86_64/kernel/entry-xen.S Thu Apr 05
13:35:54 2007 +0100
+++ b/linux-2.6-xen-sparse/arch/x86_64/kernel/entry-xen.S Thu Apr 05
13:40:43 2007 +0100
@@ -201,6 +201,19 @@ END(ret_from_fork)
END(ret_from_fork)
/*
+ * initial frame state for interrupts and exceptions
+ */
+ .macro _frame ref
+ CFI_STARTPROC simple
+ CFI_DEF_CFA rsp,SS+8-\ref
+ /*CFI_REL_OFFSET ss,SS-\ref*/
+ CFI_REL_OFFSET rsp,RSP-\ref
+ /*CFI_REL_OFFSET rflags,EFLAGS-\ref*/
+ /*CFI_REL_OFFSET cs,CS-\ref*/
+ CFI_REL_OFFSET rip,RIP-\ref
+ .endm
+
+/*
* System call entry. Upto 6 arguments in registers are supported.
*
* SYSCALL does not save anything on the stack and does not change the
@@ -232,10 +245,7 @@ END(ret_from_fork)
*/
ENTRY(system_call)
- CFI_STARTPROC simple
- CFI_DEF_CFA rsp,PDA_STACKOFFSET
- CFI_REGISTER rip,rcx
- /*CFI_REGISTER rflags,r11*/
+ _frame (RIP-0x10)
SAVE_ARGS -8,0
movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
/*
@@ -273,9 +283,7 @@ sysret_check:
*/
TRACE_IRQS_ON
XEN_UNBLOCK_EVENTS(%rsi)
- CFI_REGISTER rip,rcx
RESTORE_ARGS 0,8,0
- /*CFI_REGISTER rflags,r11*/
HYPERVISOR_IRET VGCF_IN_SYSCALL
/* Handle reschedules */
@@ -505,24 +513,16 @@ ENTRY(stub_rt_sigreturn)
CFI_ENDPROC
END(stub_rt_sigreturn)
-/*
- * initial frame state for interrupts and exceptions
- */
- .macro _frame ref
- CFI_STARTPROC simple
- CFI_DEF_CFA rsp,SS+8-\ref
- /*CFI_REL_OFFSET ss,SS-\ref*/
- CFI_REL_OFFSET rsp,RSP-\ref
- /*CFI_REL_OFFSET rflags,EFLAGS-\ref*/
- /*CFI_REL_OFFSET cs,CS-\ref*/
- CFI_REL_OFFSET rip,RIP-\ref
- .endm
-
/* initial frame state for interrupts (and exceptions without error code) */
-#define INTR_FRAME _frame RIP
+#define INTR_FRAME _frame (RIP-0x10); \
+ CFI_REL_OFFSET rcx,0; \
+ CFI_REL_OFFSET r11,8
+
/* initial frame state for exceptions with error code (and interrupts with
vector already pushed) */
-#define XCPT_FRAME _frame ORIG_RAX
+#define XCPT_FRAME _frame (RIP-0x18); \
+ CFI_REL_OFFSET rcx,0; \
+ CFI_REL_OFFSET r11,8
/*
* Interrupt exit.
@@ -599,8 +599,9 @@ retint_kernel:
#endif
CFI_ENDPROC
-END(common_interrupt)
-
+END(retint_check)
+
+#ifndef CONFIG_XEN
/*
* APIC interrupts.
*/
@@ -613,7 +614,6 @@ END(common_interrupt)
CFI_ENDPROC
.endm
-#ifndef CONFIG_XEN
ENTRY(thermal_interrupt)
apicinterrupt THERMAL_APIC_VECTOR,smp_thermal_interrupt
END(thermal_interrupt)
@@ -668,12 +668,16 @@ END(spurious_interrupt)
.macro zeroentry sym
INTR_FRAME
movq (%rsp),%rcx
+ CFI_RESTORE rcx
movq 8(%rsp),%r11
+ CFI_RESTORE r11
addq $0x10,%rsp /* skip rcx and r11 */
+ CFI_ADJUST_CFA_OFFSET -0x10
pushq $0 /* push error code/oldrax */
CFI_ADJUST_CFA_OFFSET 8
pushq %rax /* push real oldrax to the rdi slot */
CFI_ADJUST_CFA_OFFSET 8
+ CFI_REL_OFFSET rax,0
leaq \sym(%rip),%rax
jmp error_entry
CFI_ENDPROC
@@ -682,10 +686,14 @@ END(spurious_interrupt)
.macro errorentry sym
XCPT_FRAME
movq (%rsp),%rcx
+ CFI_RESTORE rcx
movq 8(%rsp),%r11
+ CFI_RESTORE r11
addq $0x10,%rsp /* rsp points to the error code */
+ CFI_ADJUST_CFA_OFFSET -0x10
pushq %rax
CFI_ADJUST_CFA_OFFSET 8
+ CFI_REL_OFFSET rax,0
leaq \sym(%rip),%rax
jmp error_entry
CFI_ENDPROC
@@ -799,6 +807,7 @@ paranoid_schedule\trace:
*/
ENTRY(error_entry)
_frame RDI
+ CFI_REL_OFFSET rax,0
/* rdi slot contains rax, oldrax contains error code */
cld
subq $14*8,%rsp
@@ -806,6 +815,7 @@ ENTRY(error_entry)
movq %rsi,13*8(%rsp)
CFI_REL_OFFSET rsi,RSI
movq 14*8(%rsp),%rsi /* load rax from rdi slot */
+ CFI_REGISTER rax,rsi
movq %rdx,12*8(%rsp)
CFI_REL_OFFSET rdx,RDX
movq %rcx,11*8(%rsp)
@@ -839,6 +849,7 @@ ENTRY(error_entry)
#endif
error_call_handler:
movq %rdi, RDI(%rsp)
+ CFI_REL_OFFSET rdi,RDI
movq %rsp,%rdi
movq ORIG_RAX(%rsp),%rsi # get error code
movq $-1,ORIG_RAX(%rsp)
@@ -1186,7 +1197,7 @@ END(int3)
ENTRY(overflow)
zeroentry do_overflow
-END(debug)
+END(overflow)
ENTRY(bounds)
zeroentry do_bounds
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