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[PATCH] x86_64: add END()/ENDPROC() annotations to entry.S
Since END()/ENDPROC() are now available, add respective annotations to x86_64's entry.S. This should help debugging activities. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Beulich
Linus Torvalds
parent
bebfa1013e
commit
4b787e0b83
@ -155,6 +155,7 @@ sysenter_tracesys:
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.previous
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jmp sysenter_do_call
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CFI_ENDPROC
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ENDPROC(ia32_sysenter_target)
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/*
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* 32bit SYSCALL instruction entry.
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@ -249,6 +250,7 @@ cstar_tracesys:
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.quad 1b,ia32_badarg
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.previous
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jmp cstar_do_call
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END(ia32_cstar_target)
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ia32_badarg:
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movq $-EFAULT,%rax
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@ -314,6 +316,7 @@ ia32_tracesys:
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LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed it */
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RESTORE_REST
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jmp ia32_do_syscall
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END(ia32_syscall)
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ia32_badsys:
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movq $0,ORIG_RAX-ARGOFFSET(%rsp)
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@ -370,6 +373,7 @@ ENTRY(ia32_ptregs_common)
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RESTORE_REST
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jmp ia32_sysret /* misbalances the return cache */
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CFI_ENDPROC
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END(ia32_ptregs_common)
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.section .rodata,"a"
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.align 8
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@ -154,6 +154,7 @@ rff_trace:
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GET_THREAD_INFO(%rcx)
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jmp rff_action
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CFI_ENDPROC
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END(ret_from_fork)
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/*
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* System call entry. Upto 6 arguments in registers are supported.
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@ -285,6 +286,7 @@ tracesys:
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/* Use IRET because user could have changed frame */
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jmp int_ret_from_sys_call
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CFI_ENDPROC
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END(system_call)
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/*
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* Syscall return path ending with IRET.
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@ -364,6 +366,7 @@ int_restore_rest:
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cli
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jmp int_with_check
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CFI_ENDPROC
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END(int_ret_from_sys_call)
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/*
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* Certain special system calls that need to save a complete full stack frame.
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@ -375,6 +378,7 @@ int_restore_rest:
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leaq \func(%rip),%rax
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leaq -ARGOFFSET+8(%rsp),\arg /* 8 for return address */
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jmp ptregscall_common
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END(\label)
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.endm
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CFI_STARTPROC
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@ -404,6 +408,7 @@ ENTRY(ptregscall_common)
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CFI_REL_OFFSET rip, 0
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ret
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CFI_ENDPROC
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END(ptregscall_common)
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ENTRY(stub_execve)
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CFI_STARTPROC
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@ -418,6 +423,7 @@ ENTRY(stub_execve)
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RESTORE_REST
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jmp int_ret_from_sys_call
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CFI_ENDPROC
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END(stub_execve)
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/*
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* sigreturn is special because it needs to restore all registers on return.
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@ -435,6 +441,7 @@ ENTRY(stub_rt_sigreturn)
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RESTORE_REST
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jmp int_ret_from_sys_call
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CFI_ENDPROC
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END(stub_rt_sigreturn)
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/*
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* initial frame state for interrupts and exceptions
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@ -589,7 +596,9 @@ retint_kernel:
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call preempt_schedule_irq
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jmp exit_intr
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#endif
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CFI_ENDPROC
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END(common_interrupt)
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/*
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* APIC interrupts.
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@ -605,17 +614,21 @@ retint_kernel:
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ENTRY(thermal_interrupt)
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apicinterrupt THERMAL_APIC_VECTOR,smp_thermal_interrupt
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END(thermal_interrupt)
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ENTRY(threshold_interrupt)
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apicinterrupt THRESHOLD_APIC_VECTOR,mce_threshold_interrupt
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END(threshold_interrupt)
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#ifdef CONFIG_SMP
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ENTRY(reschedule_interrupt)
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apicinterrupt RESCHEDULE_VECTOR,smp_reschedule_interrupt
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END(reschedule_interrupt)
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.macro INVALIDATE_ENTRY num
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ENTRY(invalidate_interrupt\num)
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apicinterrupt INVALIDATE_TLB_VECTOR_START+\num,smp_invalidate_interrupt
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END(invalidate_interrupt\num)
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.endm
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INVALIDATE_ENTRY 0
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@ -629,17 +642,21 @@ ENTRY(invalidate_interrupt\num)
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ENTRY(call_function_interrupt)
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apicinterrupt CALL_FUNCTION_VECTOR,smp_call_function_interrupt
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END(call_function_interrupt)
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#endif
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#ifdef CONFIG_X86_LOCAL_APIC
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ENTRY(apic_timer_interrupt)
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apicinterrupt LOCAL_TIMER_VECTOR,smp_apic_timer_interrupt
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END(apic_timer_interrupt)
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ENTRY(error_interrupt)
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apicinterrupt ERROR_APIC_VECTOR,smp_error_interrupt
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END(error_interrupt)
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ENTRY(spurious_interrupt)
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apicinterrupt SPURIOUS_APIC_VECTOR,smp_spurious_interrupt
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END(spurious_interrupt)
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#endif
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/*
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@ -777,6 +794,7 @@ error_kernelspace:
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cmpq $gs_change,RIP(%rsp)
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je error_swapgs
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jmp error_sti
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END(error_entry)
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/* Reload gs selector with exception handling */
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/* edi: new selector */
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@ -794,6 +812,7 @@ gs_change:
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CFI_ADJUST_CFA_OFFSET -8
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ret
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CFI_ENDPROC
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ENDPROC(load_gs_index)
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.section __ex_table,"a"
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.align 8
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@ -847,7 +866,7 @@ ENTRY(kernel_thread)
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UNFAKE_STACK_FRAME
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ret
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CFI_ENDPROC
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ENDPROC(kernel_thread)
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child_rip:
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/*
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@ -860,6 +879,7 @@ child_rip:
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# exit
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xorl %edi, %edi
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call do_exit
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ENDPROC(child_rip)
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/*
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* execve(). This function needs to use IRET, not SYSRET, to set up all state properly.
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@ -889,19 +909,24 @@ ENTRY(execve)
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UNFAKE_STACK_FRAME
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ret
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CFI_ENDPROC
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ENDPROC(execve)
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KPROBE_ENTRY(page_fault)
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errorentry do_page_fault
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END(page_fault)
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.previous .text
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ENTRY(coprocessor_error)
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zeroentry do_coprocessor_error
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END(coprocessor_error)
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ENTRY(simd_coprocessor_error)
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zeroentry do_simd_coprocessor_error
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END(simd_coprocessor_error)
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ENTRY(device_not_available)
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zeroentry math_state_restore
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END(device_not_available)
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/* runs on exception stack */
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KPROBE_ENTRY(debug)
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@ -911,6 +936,7 @@ KPROBE_ENTRY(debug)
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paranoidentry do_debug, DEBUG_STACK
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jmp paranoid_exit
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CFI_ENDPROC
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END(debug)
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.previous .text
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/* runs on exception stack */
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@ -961,6 +987,7 @@ paranoid_schedule:
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cli
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jmp paranoid_userspace
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CFI_ENDPROC
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END(nmi)
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.previous .text
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KPROBE_ENTRY(int3)
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@ -970,22 +997,28 @@ KPROBE_ENTRY(int3)
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paranoidentry do_int3, DEBUG_STACK
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jmp paranoid_exit
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CFI_ENDPROC
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END(int3)
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.previous .text
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ENTRY(overflow)
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zeroentry do_overflow
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END(overflow)
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ENTRY(bounds)
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zeroentry do_bounds
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END(bounds)
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ENTRY(invalid_op)
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zeroentry do_invalid_op
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END(invalid_op)
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ENTRY(coprocessor_segment_overrun)
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zeroentry do_coprocessor_segment_overrun
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END(coprocessor_segment_overrun)
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ENTRY(reserved)
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zeroentry do_reserved
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END(reserved)
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/* runs on exception stack */
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ENTRY(double_fault)
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@ -993,12 +1026,15 @@ ENTRY(double_fault)
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paranoidentry do_double_fault
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jmp paranoid_exit
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CFI_ENDPROC
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END(double_fault)
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ENTRY(invalid_TSS)
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errorentry do_invalid_TSS
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END(invalid_TSS)
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ENTRY(segment_not_present)
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errorentry do_segment_not_present
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END(segment_not_present)
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/* runs on exception stack */
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ENTRY(stack_segment)
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@ -1006,19 +1042,24 @@ ENTRY(stack_segment)
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paranoidentry do_stack_segment
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jmp paranoid_exit
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CFI_ENDPROC
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END(stack_segment)
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KPROBE_ENTRY(general_protection)
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errorentry do_general_protection
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END(general_protection)
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.previous .text
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ENTRY(alignment_check)
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errorentry do_alignment_check
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END(alignment_check)
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ENTRY(divide_error)
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zeroentry do_divide_error
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END(divide_error)
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ENTRY(spurious_interrupt_bug)
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zeroentry do_spurious_interrupt_bug
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END(spurious_interrupt_bug)
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#ifdef CONFIG_X86_MCE
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/* runs on exception stack */
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@ -1029,6 +1070,7 @@ ENTRY(machine_check)
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paranoidentry do_machine_check
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jmp paranoid_exit
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CFI_ENDPROC
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END(machine_check)
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#endif
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ENTRY(call_softirq)
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@ -1046,3 +1088,4 @@ ENTRY(call_softirq)
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decl %gs:pda_irqcount
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ret
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CFI_ENDPROC
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ENDPROC(call_softirq)
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