From: Chuck Ebbert <76306.1226@compuserve.com> Date: Tue, 26 Sep 2006 08:52:37 +0000 (+0200) Subject: [PATCH] i386: annotate FIX_STACK() and the rest of nmi() X-Git-Tag: v2.6.19-rc1~1077^2~74 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=a549b86dd0f3cbffcd5f9343f4ae7fcd59f7e756;p=linux-2.6-omap-h63xx.git [PATCH] i386: annotate FIX_STACK() and the rest of nmi() In i386's entry.S, FIX_STACK() needs annotation because it replaces the stack pointer. And the rest of nmi() needs annotation in order to compile with these new annotations. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andi Kleen --- diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S index 0928f70639a..4b084524922 100644 --- a/arch/i386/kernel/entry.S +++ b/arch/i386/kernel/entry.S @@ -701,9 +701,15 @@ device_not_available_emulate: jne ok; \ label: \ movl TSS_sysenter_esp0+offset(%esp),%esp; \ + CFI_DEF_CFA esp, 0; \ + CFI_UNDEFINED eip; \ pushfl; \ + CFI_ADJUST_CFA_OFFSET 4; \ pushl $__KERNEL_CS; \ - pushl $sysenter_past_esp + CFI_ADJUST_CFA_OFFSET 4; \ + pushl $sysenter_past_esp; \ + CFI_ADJUST_CFA_OFFSET 4; \ + CFI_REL_OFFSET eip, 0 KPROBE_ENTRY(debug) RING0_INT_FRAME @@ -754,6 +760,7 @@ KPROBE_ENTRY(nmi) cmpl $sysenter_entry,12(%esp) je nmi_debug_stack_check nmi_stack_correct: + /* We have a RING0_INT_FRAME here */ pushl %eax CFI_ADJUST_CFA_OFFSET 4 SAVE_ALL @@ -764,9 +771,12 @@ nmi_stack_correct: CFI_ENDPROC nmi_stack_fixup: + RING0_INT_FRAME FIX_STACK(12,nmi_stack_correct, 1) jmp nmi_stack_correct + nmi_debug_stack_check: + /* We have a RING0_INT_FRAME here */ cmpw $__KERNEL_CS,16(%esp) jne nmi_stack_correct cmpl $debug,(%esp) @@ -777,8 +787,10 @@ nmi_debug_stack_check: jmp nmi_stack_correct nmi_16bit_stack: - RING0_INT_FRAME - /* create the pointer to lss back */ + /* We have a RING0_INT_FRAME here. + * + * create the pointer to lss back + */ pushl %ss CFI_ADJUST_CFA_OFFSET 4 pushl %esp diff --git a/include/asm-i386/dwarf2.h b/include/asm-i386/dwarf2.h index fe2392f361e..5d1a8db5a9b 100644 --- a/include/asm-i386/dwarf2.h +++ b/include/asm-i386/dwarf2.h @@ -26,6 +26,7 @@ #define CFI_RESTORE .cfi_restore #define CFI_REMEMBER_STATE .cfi_remember_state #define CFI_RESTORE_STATE .cfi_restore_state +#define CFI_UNDEFINED .cfi_undefined #else @@ -46,6 +47,7 @@ #define CFI_RESTORE ignore #define CFI_REMEMBER_STATE ignore #define CFI_RESTORE_STATE ignore +#define CFI_UNDEFINED ignore #endif