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Message-ID: <20101021134243.GA5292@elte.hu>
Date: Thu, 21 Oct 2010 15:42:43 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>,
Thomas Gleixner <tglx@...utronix.de>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] x86/debug for v2.6.37
Linus,
Please pull the latest x86-debug-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86-debug-for-linus
Thanks,
Ingo
------------------>
Jan Beulich (5):
x86-64: Fix unwind annotations in syscall stubs
x86-64: Adjust frame type at paranoid_exit:
x86-64: Use symbolics instead of raw numbers in entry_64.S
i386: Add unwind directives to syscall ptregs stubs
x86: Use {push,pop}{l,q}_cfi in more places
Jin Dongming (1):
therm_throt.c: Trivial printk message fix for a unsuitable abbreviation of 'thermal'
Joe Perches (1):
x86: Remove pr_<level> uses of KERN_<level>
arch/x86/include/asm/dwarf2.h | 20 ++
arch/x86/kernel/apb_timer.c | 4 +-
arch/x86/kernel/cpu/mcheck/therm_throt.c | 2 +-
arch/x86/kernel/entry_32.S | 310 +++++++++++-------------------
arch/x86/kernel/entry_64.S | 108 +++++------
5 files changed, 177 insertions(+), 267 deletions(-)
diff --git a/arch/x86/include/asm/dwarf2.h b/arch/x86/include/asm/dwarf2.h
index 733f7e9..3260991 100644
--- a/arch/x86/include/asm/dwarf2.h
+++ b/arch/x86/include/asm/dwarf2.h
@@ -89,6 +89,16 @@
CFI_ADJUST_CFA_OFFSET -8
.endm
+ .macro pushfq_cfi
+ pushfq
+ CFI_ADJUST_CFA_OFFSET 8
+ .endm
+
+ .macro popfq_cfi
+ popfq
+ CFI_ADJUST_CFA_OFFSET -8
+ .endm
+
.macro movq_cfi reg offset=0
movq %\reg, \offset(%rsp)
CFI_REL_OFFSET \reg, \offset
@@ -109,6 +119,16 @@
CFI_ADJUST_CFA_OFFSET -4
.endm
+ .macro pushfl_cfi
+ pushfl
+ CFI_ADJUST_CFA_OFFSET 4
+ .endm
+
+ .macro popfl_cfi
+ popfl
+ CFI_ADJUST_CFA_OFFSET -4
+ .endm
+
.macro movl_cfi reg offset=0
movl %\reg, \offset(%esp)
CFI_REL_OFFSET \reg, \offset
diff --git a/arch/x86/kernel/apb_timer.c b/arch/x86/kernel/apb_timer.c
index 8dd7780..4004417 100644
--- a/arch/x86/kernel/apb_timer.c
+++ b/arch/x86/kernel/apb_timer.c
@@ -398,7 +398,7 @@ static int apbt_cpuhp_notify(struct notifier_block *n,
}
break;
default:
- pr_debug(KERN_INFO "APBT notified %lu, no action\n", action);
+ pr_debug("APBT notified %lu, no action\n", action);
}
return NOTIFY_OK;
}
@@ -552,7 +552,7 @@ bad_count:
pr_debug("APB CS going back %lx:%lx:%lx ",
t2, last_read, t2 - last_read);
bad_count_x3:
- pr_debug(KERN_INFO "tripple check enforced\n");
+ pr_debug("triple check enforced\n");
t0 = apbt_readl(phy_cs_timer_id,
APBTMR_N_CURRENT_VALUE);
udelay(1);
diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c
index c2a8b26..1d0f743 100644
--- a/arch/x86/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c
@@ -348,7 +348,7 @@ static void intel_thermal_interrupt(void)
static void unexpected_thermal_interrupt(void)
{
- printk(KERN_ERR "CPU%d: Unexpected LVT TMR interrupt!\n",
+ printk(KERN_ERR "CPU%d: Unexpected LVT thermal interrupt!\n",
smp_processor_id());
add_taint(TAINT_MACHINE_CHECK);
}
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 227d009..9fb188d 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -115,8 +115,7 @@
/* unfortunately push/pop can't be no-op */
.macro PUSH_GS
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
.endm
.macro POP_GS pop=0
addl $(4 + \pop), %esp
@@ -140,14 +139,12 @@
#else /* CONFIG_X86_32_LAZY_GS */
.macro PUSH_GS
- pushl %gs
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %gs
/*CFI_REL_OFFSET gs, 0*/
.endm
.macro POP_GS pop=0
-98: popl %gs
- CFI_ADJUST_CFA_OFFSET -4
+98: popl_cfi %gs
/*CFI_RESTORE gs*/
.if \pop <> 0
add $\pop, %esp
@@ -195,35 +192,25 @@
.macro SAVE_ALL
cld
PUSH_GS
- pushl %fs
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %fs
/*CFI_REL_OFFSET fs, 0;*/
- pushl %es
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %es
/*CFI_REL_OFFSET es, 0;*/
- pushl %ds
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ds
/*CFI_REL_OFFSET ds, 0;*/
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax
CFI_REL_OFFSET eax, 0
- pushl %ebp
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ebp
CFI_REL_OFFSET ebp, 0
- pushl %edi
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %edi
CFI_REL_OFFSET edi, 0
- pushl %esi
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %esi
CFI_REL_OFFSET esi, 0
- pushl %edx
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %edx
CFI_REL_OFFSET edx, 0
- pushl %ecx
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ecx
CFI_REL_OFFSET ecx, 0
- pushl %ebx
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ebx
CFI_REL_OFFSET ebx, 0
movl $(__USER_DS), %edx
movl %edx, %ds
@@ -234,39 +221,29 @@
.endm
.macro RESTORE_INT_REGS
- popl %ebx
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %ebx
CFI_RESTORE ebx
- popl %ecx
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %ecx
CFI_RESTORE ecx
- popl %edx
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %edx
CFI_RESTORE edx
- popl %esi
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %esi
CFI_RESTORE esi
- popl %edi
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %edi
CFI_RESTORE edi
- popl %ebp
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %ebp
CFI_RESTORE ebp
- popl %eax
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %eax
CFI_RESTORE eax
.endm
.macro RESTORE_REGS pop=0
RESTORE_INT_REGS
-1: popl %ds
- CFI_ADJUST_CFA_OFFSET -4
+1: popl_cfi %ds
/*CFI_RESTORE ds;*/
-2: popl %es
- CFI_ADJUST_CFA_OFFSET -4
+2: popl_cfi %es
/*CFI_RESTORE es;*/
-3: popl %fs
- CFI_ADJUST_CFA_OFFSET -4
+3: popl_cfi %fs
/*CFI_RESTORE fs;*/
POP_GS \pop
.pushsection .fixup, "ax"
@@ -320,16 +297,12 @@
ENTRY(ret_from_fork)
CFI_STARTPROC
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax
call schedule_tail
GET_THREAD_INFO(%ebp)
- popl %eax
- CFI_ADJUST_CFA_OFFSET -4
- pushl $0x0202 # Reset kernel eflags
- CFI_ADJUST_CFA_OFFSET 4
- popfl
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %eax
+ pushl_cfi $0x0202 # Reset kernel eflags
+ popfl_cfi
jmp syscall_exit
CFI_ENDPROC
END(ret_from_fork)
@@ -409,29 +382,23 @@ sysenter_past_esp:
* enough kernel state to call TRACE_IRQS_OFF can be called - but
* we immediately enable interrupts at that point anyway.
*/
- pushl $(__USER_DS)
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $(__USER_DS)
/*CFI_REL_OFFSET ss, 0*/
- pushl %ebp
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ebp
CFI_REL_OFFSET esp, 0
- pushfl
+ pushfl_cfi
orl $X86_EFLAGS_IF, (%esp)
- CFI_ADJUST_CFA_OFFSET 4
- pushl $(__USER_CS)
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $(__USER_CS)
/*CFI_REL_OFFSET cs, 0*/
/*
* Push current_thread_info()->sysenter_return to the stack.
* A tiny bit of offset fixup is necessary - 4*4 means the 4 words
* pushed above; +8 corresponds to copy_thread's esp0 setting.
*/
- pushl (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp)
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi (TI_sysenter_return-THREAD_SIZE+8+4*4)(%esp)
CFI_REL_OFFSET eip, 0
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax
SAVE_ALL
ENABLE_INTERRUPTS(CLBR_NONE)
@@ -486,8 +453,7 @@ sysenter_audit:
movl %eax,%edx /* 2nd arg: syscall number */
movl $AUDIT_ARCH_I386,%eax /* 1st arg: audit arch */
call audit_syscall_entry
- pushl %ebx
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ebx
movl PT_EAX(%esp),%eax /* reload syscall number */
jmp sysenter_do_call
@@ -529,8 +495,7 @@ ENDPROC(ia32_sysenter_target)
# system call handler stub
ENTRY(system_call)
RING0_INT_FRAME # can't unwind into user space anyway
- pushl %eax # save orig_eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax # save orig_eax
SAVE_ALL
GET_THREAD_INFO(%ebp)
# system call tracing in operation / emulation
@@ -566,7 +531,6 @@ restore_all_notrace:
je ldt_ss # returning to user-space with LDT SS
restore_nocheck:
RESTORE_REGS 4 # skip orig_eax/error_code
- CFI_ADJUST_CFA_OFFSET -4
irq_return:
INTERRUPT_RETURN
.section .fixup,"ax"
@@ -619,10 +583,8 @@ ldt_ss:
shr $16, %edx
mov %dl, GDT_ESPFIX_SS + 4 /* bits 16..23 */
mov %dh, GDT_ESPFIX_SS + 7 /* bits 24..31 */
- pushl $__ESPFIX_SS
- CFI_ADJUST_CFA_OFFSET 4
- push %eax /* new kernel esp */
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $__ESPFIX_SS
+ pushl_cfi %eax /* new kernel esp */
/* Disable interrupts, but do not irqtrace this section: we
* will soon execute iret and the tracer was already set to
* the irqstate after the iret */
@@ -666,11 +628,9 @@ work_notifysig: # deal with pending signals and
ALIGN
work_notifysig_v86:
- pushl %ecx # save ti_flags for do_notify_resume
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ecx # save ti_flags for do_notify_resume
call save_v86_state # %eax contains pt_regs pointer
- popl %ecx
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %ecx
movl %eax, %esp
#else
movl %esp, %eax
@@ -750,14 +710,18 @@ ptregs_##name: \
#define PTREGSCALL3(name) \
ALIGN; \
ptregs_##name: \
+ CFI_STARTPROC; \
leal 4(%esp),%eax; \
- pushl %eax; \
+ pushl_cfi %eax; \
movl PT_EDX(%eax),%ecx; \
movl PT_ECX(%eax),%edx; \
movl PT_EBX(%eax),%eax; \
call sys_##name; \
addl $4,%esp; \
- ret
+ CFI_ADJUST_CFA_OFFSET -4; \
+ ret; \
+ CFI_ENDPROC; \
+ENDPROC(ptregs_##name)
PTREGSCALL1(iopl)
PTREGSCALL0(fork)
@@ -772,15 +736,19 @@ PTREGSCALL1(vm86old)
/* Clone is an oddball. The 4th arg is in %edi */
ALIGN;
ptregs_clone:
+ CFI_STARTPROC
leal 4(%esp),%eax
- pushl %eax
- pushl PT_EDI(%eax)
+ pushl_cfi %eax
+ pushl_cfi PT_EDI(%eax)
movl PT_EDX(%eax),%ecx
movl PT_ECX(%eax),%edx
movl PT_EBX(%eax),%eax
call sys_clone
addl $8,%esp
+ CFI_ADJUST_CFA_OFFSET -8
ret
+ CFI_ENDPROC
+ENDPROC(ptregs_clone)
.macro FIXUP_ESPFIX_STACK
/*
@@ -795,10 +763,8 @@ ptregs_clone:
mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */
shl $16, %eax
addl %esp, %eax /* the adjusted stack pointer */
- pushl $__KERNEL_DS
- CFI_ADJUST_CFA_OFFSET 4
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $__KERNEL_DS
+ pushl_cfi %eax
lss (%esp), %esp /* switch to the normal stack segment */
CFI_ADJUST_CFA_OFFSET -8
.endm
@@ -835,8 +801,7 @@ vector=FIRST_EXTERNAL_VECTOR
.if vector <> FIRST_EXTERNAL_VECTOR
CFI_ADJUST_CFA_OFFSET -4
.endif
-1: pushl $(~vector+0x80) /* Note: always in signed byte range */
- CFI_ADJUST_CFA_OFFSET 4
+1: pushl_cfi $(~vector+0x80) /* Note: always in signed byte range */
.if ((vector-FIRST_EXTERNAL_VECTOR)%7) <> 6
jmp 2f
.endif
@@ -876,8 +841,7 @@ ENDPROC(common_interrupt)
#define BUILD_INTERRUPT3(name, nr, fn) \
ENTRY(name) \
RING0_INT_FRAME; \
- pushl $~(nr); \
- CFI_ADJUST_CFA_OFFSET 4; \
+ pushl_cfi $~(nr); \
SAVE_ALL; \
TRACE_IRQS_OFF \
movl %esp,%eax; \
@@ -893,21 +857,18 @@ ENDPROC(name)
ENTRY(coprocessor_error)
RING0_INT_FRAME
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
- pushl $do_coprocessor_error
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
+ pushl_cfi $do_coprocessor_error
jmp error_code
CFI_ENDPROC
END(coprocessor_error)
ENTRY(simd_coprocessor_error)
RING0_INT_FRAME
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
#ifdef CONFIG_X86_INVD_BUG
/* AMD 486 bug: invd from userspace calls exception 19 instead of #GP */
-661: pushl $do_general_protection
+661: pushl_cfi $do_general_protection
662:
.section .altinstructions,"a"
.balign 4
@@ -922,19 +883,16 @@ ENTRY(simd_coprocessor_error)
664:
.previous
#else
- pushl $do_simd_coprocessor_error
+ pushl_cfi $do_simd_coprocessor_error
#endif
- CFI_ADJUST_CFA_OFFSET 4
jmp error_code
CFI_ENDPROC
END(simd_coprocessor_error)
ENTRY(device_not_available)
RING0_INT_FRAME
- pushl $-1 # mark this as an int
- CFI_ADJUST_CFA_OFFSET 4
- pushl $do_device_not_available
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $-1 # mark this as an int
+ pushl_cfi $do_device_not_available
jmp error_code
CFI_ENDPROC
END(device_not_available)
@@ -956,82 +914,68 @@ END(native_irq_enable_sysexit)
ENTRY(overflow)
RING0_INT_FRAME
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
- pushl $do_overflow
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
+ pushl_cfi $do_overflow
jmp error_code
CFI_ENDPROC
END(overflow)
ENTRY(bounds)
RING0_INT_FRAME
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
- pushl $do_bounds
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
+ pushl_cfi $do_bounds
jmp error_code
CFI_ENDPROC
END(bounds)
ENTRY(invalid_op)
RING0_INT_FRAME
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
- pushl $do_invalid_op
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
+ pushl_cfi $do_invalid_op
jmp error_code
CFI_ENDPROC
END(invalid_op)
ENTRY(coprocessor_segment_overrun)
RING0_INT_FRAME
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
- pushl $do_coprocessor_segment_overrun
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
+ pushl_cfi $do_coprocessor_segment_overrun
jmp error_code
CFI_ENDPROC
END(coprocessor_segment_overrun)
ENTRY(invalid_TSS)
RING0_EC_FRAME
- pushl $do_invalid_TSS
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $do_invalid_TSS
jmp error_code
CFI_ENDPROC
END(invalid_TSS)
ENTRY(segment_not_present)
RING0_EC_FRAME
- pushl $do_segment_not_present
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $do_segment_not_present
jmp error_code
CFI_ENDPROC
END(segment_not_present)
ENTRY(stack_segment)
RING0_EC_FRAME
- pushl $do_stack_segment
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $do_stack_segment
jmp error_code
CFI_ENDPROC
END(stack_segment)
ENTRY(alignment_check)
RING0_EC_FRAME
- pushl $do_alignment_check
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $do_alignment_check
jmp error_code
CFI_ENDPROC
END(alignment_check)
ENTRY(divide_error)
RING0_INT_FRAME
- pushl $0 # no error code
- CFI_ADJUST_CFA_OFFSET 4
- pushl $do_divide_error
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0 # no error code
+ pushl_cfi $do_divide_error
jmp error_code
CFI_ENDPROC
END(divide_error)
@@ -1039,10 +983,8 @@ END(divide_error)
#ifdef CONFIG_X86_MCE
ENTRY(machine_check)
RING0_INT_FRAME
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
- pushl machine_check_vector
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
+ pushl_cfi machine_check_vector
jmp error_code
CFI_ENDPROC
END(machine_check)
@@ -1050,10 +992,8 @@ END(machine_check)
ENTRY(spurious_interrupt_bug)
RING0_INT_FRAME
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
- pushl $do_spurious_interrupt_bug
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
+ pushl_cfi $do_spurious_interrupt_bug
jmp error_code
CFI_ENDPROC
END(spurious_interrupt_bug)
@@ -1084,8 +1024,7 @@ ENTRY(xen_sysenter_target)
ENTRY(xen_hypervisor_callback)
CFI_STARTPROC
- pushl $0
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $0
SAVE_ALL
TRACE_IRQS_OFF
@@ -1121,23 +1060,20 @@ ENDPROC(xen_hypervisor_callback)
# We distinguish between categories by maintaining a status value in EAX.
ENTRY(xen_failsafe_callback)
CFI_STARTPROC
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax
movl $1,%eax
1: mov 4(%esp),%ds
2: mov 8(%esp),%es
3: mov 12(%esp),%fs
4: mov 16(%esp),%gs
testl %eax,%eax
- popl %eax
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %eax
lea 16(%esp),%esp
CFI_ADJUST_CFA_OFFSET -16
jz 5f
addl $16,%esp
jmp iret_exc # EAX != 0 => Category 2 (Bad IRET)
-5: pushl $0 # EAX == 0 => Category 1 (Bad segment)
- CFI_ADJUST_CFA_OFFSET 4
+5: pushl_cfi $0 # EAX == 0 => Category 1 (Bad segment)
SAVE_ALL
jmp ret_from_exception
CFI_ENDPROC
@@ -1287,40 +1223,29 @@ syscall_table_size=(.-sys_call_table)
ENTRY(page_fault)
RING0_EC_FRAME
- pushl $do_page_fault
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $do_page_fault
ALIGN
error_code:
/* the function address is in %gs's slot on the stack */
- pushl %fs
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %fs
/*CFI_REL_OFFSET fs, 0*/
- pushl %es
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %es
/*CFI_REL_OFFSET es, 0*/
- pushl %ds
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ds
/*CFI_REL_OFFSET ds, 0*/
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax
CFI_REL_OFFSET eax, 0
- pushl %ebp
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ebp
CFI_REL_OFFSET ebp, 0
- pushl %edi
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %edi
CFI_REL_OFFSET edi, 0
- pushl %esi
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %esi
CFI_REL_OFFSET esi, 0
- pushl %edx
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %edx
CFI_REL_OFFSET edx, 0
- pushl %ecx
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ecx
CFI_REL_OFFSET ecx, 0
- pushl %ebx
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ebx
CFI_REL_OFFSET ebx, 0
cld
movl $(__KERNEL_PERCPU), %ecx
@@ -1362,12 +1287,9 @@ END(page_fault)
movl TSS_sysenter_sp0 + \offset(%esp), %esp
CFI_DEF_CFA esp, 0
CFI_UNDEFINED eip
- pushfl
- CFI_ADJUST_CFA_OFFSET 4
- pushl $__KERNEL_CS
- CFI_ADJUST_CFA_OFFSET 4
- pushl $sysenter_past_esp
- CFI_ADJUST_CFA_OFFSET 4
+ pushfl_cfi
+ pushl_cfi $__KERNEL_CS
+ pushl_cfi $sysenter_past_esp
CFI_REL_OFFSET eip, 0
.endm
@@ -1377,8 +1299,7 @@ ENTRY(debug)
jne debug_stack_correct
FIX_STACK 12, debug_stack_correct, debug_esp_fix_insn
debug_stack_correct:
- pushl $-1 # mark this as an int
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $-1 # mark this as an int
SAVE_ALL
TRACE_IRQS_OFF
xorl %edx,%edx # error code 0
@@ -1398,32 +1319,27 @@ END(debug)
*/
ENTRY(nmi)
RING0_INT_FRAME
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax
movl %ss, %eax
cmpw $__ESPFIX_SS, %ax
- popl %eax
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %eax
je nmi_espfix_stack
cmpl $ia32_sysenter_target,(%esp)
je nmi_stack_fixup
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax
movl %esp,%eax
/* Do not access memory above the end of our stack page,
* it might not exist.
*/
andl $(THREAD_SIZE-1),%eax
cmpl $(THREAD_SIZE-20),%eax
- popl %eax
- CFI_ADJUST_CFA_OFFSET -4
+ popl_cfi %eax
jae nmi_stack_correct
cmpl $ia32_sysenter_target,12(%esp)
je nmi_debug_stack_check
nmi_stack_correct:
/* We have a RING0_INT_FRAME here */
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax
SAVE_ALL
xorl %edx,%edx # zero error code
movl %esp,%eax # pt_regs pointer
@@ -1452,18 +1368,14 @@ nmi_espfix_stack:
*
* create the pointer to lss back
*/
- pushl %ss
- CFI_ADJUST_CFA_OFFSET 4
- pushl %esp
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %ss
+ pushl_cfi %esp
addl $4, (%esp)
/* copy the iret frame of 12 bytes */
.rept 3
- pushl 16(%esp)
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi 16(%esp)
.endr
- pushl %eax
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi %eax
SAVE_ALL
FIXUP_ESPFIX_STACK # %eax == %esp
xorl %edx,%edx # zero error code
@@ -1477,8 +1389,7 @@ END(nmi)
ENTRY(int3)
RING0_INT_FRAME
- pushl $-1 # mark this as an int
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $-1 # mark this as an int
SAVE_ALL
TRACE_IRQS_OFF
xorl %edx,%edx # zero error code
@@ -1490,8 +1401,7 @@ END(int3)
ENTRY(general_protection)
RING0_EC_FRAME
- pushl $do_general_protection
- CFI_ADJUST_CFA_OFFSET 4
+ pushl_cfi $do_general_protection
jmp error_code
CFI_ENDPROC
END(general_protection)
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 17be5ec..8851a2b 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -213,23 +213,17 @@ ENDPROC(native_usergs_sysret64)
.macro FAKE_STACK_FRAME child_rip
/* push in order ss, rsp, eflags, cs, rip */
xorl %eax, %eax
- pushq $__KERNEL_DS /* ss */
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi $__KERNEL_DS /* ss */
/*CFI_REL_OFFSET ss,0*/
- pushq %rax /* rsp */
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi %rax /* rsp */
CFI_REL_OFFSET rsp,0
- pushq $X86_EFLAGS_IF /* eflags - interrupts on */
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi $X86_EFLAGS_IF /* eflags - interrupts on */
/*CFI_REL_OFFSET rflags,0*/
- pushq $__KERNEL_CS /* cs */
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi $__KERNEL_CS /* cs */
/*CFI_REL_OFFSET cs,0*/
- pushq \child_rip /* rip */
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi \child_rip /* rip */
CFI_REL_OFFSET rip,0
- pushq %rax /* orig rax */
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi %rax /* orig rax */
.endm
.macro UNFAKE_STACK_FRAME
@@ -398,10 +392,8 @@ ENTRY(ret_from_fork)
LOCK ; btr $TIF_FORK,TI_flags(%r8)
- push kernel_eflags(%rip)
- CFI_ADJUST_CFA_OFFSET 8
- popf # reset kernel eflags
- CFI_ADJUST_CFA_OFFSET -8
+ pushq_cfi kernel_eflags(%rip)
+ popfq_cfi # reset kernel eflags
call schedule_tail # rdi: 'prev' task parameter
@@ -521,11 +513,9 @@ sysret_careful:
jnc sysret_signal
TRACE_IRQS_ON
ENABLE_INTERRUPTS(CLBR_NONE)
- pushq %rdi
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi %rdi
call schedule
- popq %rdi
- CFI_ADJUST_CFA_OFFSET -8
+ popq_cfi %rdi
jmp sysret_check
/* Handle a signal */
@@ -634,11 +624,9 @@ int_careful:
jnc int_very_careful
TRACE_IRQS_ON
ENABLE_INTERRUPTS(CLBR_NONE)
- pushq %rdi
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi %rdi
call schedule
- popq %rdi
- CFI_ADJUST_CFA_OFFSET -8
+ popq_cfi %rdi
DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
jmp int_with_check
@@ -652,12 +640,10 @@ int_check_syscall_exit_work:
/* Check for syscall exit trace */
testl $_TIF_WORK_SYSCALL_EXIT,%edx
jz int_signal
- pushq %rdi
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi %rdi
leaq 8(%rsp),%rdi # &ptregs -> arg1
call syscall_trace_leave
- popq %rdi
- CFI_ADJUST_CFA_OFFSET -8
+ popq_cfi %rdi
andl $~(_TIF_WORK_SYSCALL_EXIT|_TIF_SYSCALL_EMU),%edi
jmp int_restore_rest
@@ -714,9 +700,8 @@ END(ptregscall_common)
ENTRY(stub_execve)
CFI_STARTPROC
- popq %r11
- CFI_ADJUST_CFA_OFFSET -8
- CFI_REGISTER rip, r11
+ addq $8, %rsp
+ PARTIAL_FRAME 0
SAVE_REST
FIXUP_TOP_OF_STACK %r11
movq %rsp, %rcx
@@ -735,7 +720,7 @@ END(stub_execve)
ENTRY(stub_rt_sigreturn)
CFI_STARTPROC
addq $8, %rsp
- CFI_ADJUST_CFA_OFFSET -8
+ PARTIAL_FRAME 0
SAVE_REST
movq %rsp,%rdi
FIXUP_TOP_OF_STACK %r11
@@ -766,8 +751,7 @@ vector=FIRST_EXTERNAL_VECTOR
.if vector <> FIRST_EXTERNAL_VECTOR
CFI_ADJUST_CFA_OFFSET -8
.endif
-1: pushq $(~vector+0x80) /* Note: always in signed byte range */
- CFI_ADJUST_CFA_OFFSET 8
+1: pushq_cfi $(~vector+0x80) /* Note: always in signed byte range */
.if ((vector-FIRST_EXTERNAL_VECTOR)%7) <> 6
jmp 2f
.endif
@@ -796,8 +780,8 @@ END(interrupt)
/* 0(%rsp): ~(interrupt number) */
.macro interrupt func
- subq $10*8, %rsp
- CFI_ADJUST_CFA_OFFSET 10*8
+ subq $ORIG_RAX-ARGOFFSET+8, %rsp
+ CFI_ADJUST_CFA_OFFSET ORIG_RAX-ARGOFFSET+8
call save_args
PARTIAL_FRAME 0
call \func
@@ -822,6 +806,7 @@ ret_from_intr:
TRACE_IRQS_OFF
decl PER_CPU_VAR(irq_count)
leaveq
+ CFI_RESTORE rbp
CFI_DEF_CFA_REGISTER rsp
CFI_ADJUST_CFA_OFFSET -8
exit_intr:
@@ -903,11 +888,9 @@ retint_careful:
jnc retint_signal
TRACE_IRQS_ON
ENABLE_INTERRUPTS(CLBR_NONE)
- pushq %rdi
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi %rdi
call schedule
- popq %rdi
- CFI_ADJUST_CFA_OFFSET -8
+ popq_cfi %rdi
GET_THREAD_INFO(%rcx)
DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
@@ -956,8 +939,7 @@ END(common_interrupt)
.macro apicinterrupt num sym do_sym
ENTRY(\sym)
INTR_FRAME
- pushq $~(\num)
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi $~(\num)
interrupt \do_sym
jmp ret_from_intr
CFI_ENDPROC
@@ -1036,8 +1018,8 @@ ENTRY(\sym)
INTR_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */
- subq $15*8,%rsp
- CFI_ADJUST_CFA_OFFSET 15*8
+ subq $ORIG_RAX-R15, %rsp
+ CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call error_entry
DEFAULT_FRAME 0
movq %rsp,%rdi /* pt_regs pointer */
@@ -1052,9 +1034,9 @@ END(\sym)
ENTRY(\sym)
INTR_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
- pushq $-1 /* ORIG_RAX: no syscall to restart */
- CFI_ADJUST_CFA_OFFSET 8
- subq $15*8, %rsp
+ pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */
+ subq $ORIG_RAX-R15, %rsp
+ CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call save_paranoid
TRACE_IRQS_OFF
movq %rsp,%rdi /* pt_regs pointer */
@@ -1070,9 +1052,9 @@ END(\sym)
ENTRY(\sym)
INTR_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
- pushq $-1 /* ORIG_RAX: no syscall to restart */
- CFI_ADJUST_CFA_OFFSET 8
- subq $15*8, %rsp
+ pushq_cfi $-1 /* ORIG_RAX: no syscall to restart */
+ subq $ORIG_RAX-R15, %rsp
+ CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call save_paranoid
TRACE_IRQS_OFF
movq %rsp,%rdi /* pt_regs pointer */
@@ -1089,8 +1071,8 @@ END(\sym)
ENTRY(\sym)
XCPT_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
- subq $15*8,%rsp
- CFI_ADJUST_CFA_OFFSET 15*8
+ subq $ORIG_RAX-R15, %rsp
+ CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call error_entry
DEFAULT_FRAME 0
movq %rsp,%rdi /* pt_regs pointer */
@@ -1107,8 +1089,8 @@ END(\sym)
ENTRY(\sym)
XCPT_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
- subq $15*8,%rsp
- CFI_ADJUST_CFA_OFFSET 15*8
+ subq $ORIG_RAX-R15, %rsp
+ CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call save_paranoid
DEFAULT_FRAME 0
TRACE_IRQS_OFF
@@ -1139,16 +1121,14 @@ zeroentry simd_coprocessor_error do_simd_coprocessor_error
/* edi: new selector */
ENTRY(native_load_gs_index)
CFI_STARTPROC
- pushf
- CFI_ADJUST_CFA_OFFSET 8
+ pushfq_cfi
DISABLE_INTERRUPTS(CLBR_ANY & ~CLBR_RDI)
SWAPGS
gs_change:
movl %edi,%gs
2: mfence /* workaround */
SWAPGS
- popf
- CFI_ADJUST_CFA_OFFSET -8
+ popfq_cfi
ret
CFI_ENDPROC
END(native_load_gs_index)
@@ -1215,8 +1195,7 @@ END(kernel_execve)
/* Call softirq on interrupt stack. Interrupts are off. */
ENTRY(call_softirq)
CFI_STARTPROC
- push %rbp
- CFI_ADJUST_CFA_OFFSET 8
+ pushq_cfi %rbp
CFI_REL_OFFSET rbp,0
mov %rsp,%rbp
CFI_DEF_CFA_REGISTER rbp
@@ -1225,6 +1204,7 @@ ENTRY(call_softirq)
push %rbp # backlink for old unwinder
call __do_softirq
leaveq
+ CFI_RESTORE rbp
CFI_DEF_CFA_REGISTER rsp
CFI_ADJUST_CFA_OFFSET -8
decl PER_CPU_VAR(irq_count)
@@ -1368,7 +1348,7 @@ paranoidzeroentry machine_check *machine_check_vector(%rip)
/* ebx: no swapgs flag */
ENTRY(paranoid_exit)
- INTR_FRAME
+ DEFAULT_FRAME
DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
testl %ebx,%ebx /* swapgs needed? */
@@ -1445,7 +1425,6 @@ error_swapgs:
error_sti:
TRACE_IRQS_OFF
ret
- CFI_ENDPROC
/*
* There are two places in the kernel that can potentially fault with
@@ -1470,6 +1449,7 @@ bstep_iret:
/* Fix truncated RIP */
movq %rcx,RIP+8(%rsp)
jmp error_swapgs
+ CFI_ENDPROC
END(error_entry)
@@ -1498,8 +1478,8 @@ ENTRY(nmi)
INTR_FRAME
PARAVIRT_ADJUST_EXCEPTION_FRAME
pushq_cfi $-1
- subq $15*8, %rsp
- CFI_ADJUST_CFA_OFFSET 15*8
+ subq $ORIG_RAX-R15, %rsp
+ CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
call save_paranoid
DEFAULT_FRAME 0
/* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */
--
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