2013-05-10 16:17:24 +00:00
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@ RUN: llvm-mc %s -triple=armv7-unknown-linux-gnueabi -filetype=obj -o - \
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@ RUN: | llvm-readobj -s -sd -sr | FileCheck %s
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@ Check the .fnstart directive and the .fnend directive.
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@ The .fnstart directive and .fnend directive should create an entry in
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@ exception handling table. For example, if the function is defined in .text
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@ section, then there should be an entry in .ARM.exidx section.
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.syntax unified
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.text
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.globl func1
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.align 2
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.type func1,%function
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.fnstart
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func1:
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bx lr
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.fnend
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@-------------------------------------------------------------------------------
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@ Check the .text section.
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@-------------------------------------------------------------------------------
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@ CHECK: Sections [
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@ CHECK: Section {
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@-------------------------------------------------------------------------------
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@ Check the index of .text section. This will be used in .ARM.exidx.
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@-------------------------------------------------------------------------------
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@ CHECK: Index: 1
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@ CHECK: Name: .text
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@ CHECK: Type: SHT_PROGBITS (0x1)
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@ CHECK: Flags [ (0x6)
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@ CHECK: SHF_ALLOC (0x2)
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@ CHECK: SHF_EXECINSTR (0x4)
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@ CHECK: ]
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@ CHECK: SectionData (
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@ CHECK: 0000: 1EFF2FE1 |../.|
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@ CHECK: )
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@ CHECK: }
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@-------------------------------------------------------------------------------
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@ Check the name of the EXIDX section. For the function in the .text section,
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@ this should be .ARM.exidx. It is incorrect to see .ARM.exidx.text here.
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@-------------------------------------------------------------------------------
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@ CHECK: Section {
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@ CHECK: Name: .ARM.exidx
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@ CHECK: Type: SHT_ARM_EXIDX (0x70000001)
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@ CHECK: Flags [ (0x82)
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@ CHECK: SHF_ALLOC (0x2)
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@ CHECK: SHF_LINK_ORDER (0x80)
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@ CHECK: ]
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@-------------------------------------------------------------------------------
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@ Check the linked section of the EXIDX section. This should be the index
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@ of the .text section.
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@-------------------------------------------------------------------------------
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@ CHECK: Link: 1
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@-------------------------------------------------------------------------------
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@ The first word should be the offset to .text. The second word should be
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@ 0xB0B0B080, which means compact model 0 is used (0x80) and the rest of the
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@ word is filled with FINISH opcode (0xB0).
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@-------------------------------------------------------------------------------
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@ CHECK: SectionData (
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@ CHECK: 0000: 00000000 B0B0B080 |........|
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@ CHECK: )
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@ CHECK: }
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@ CHECK: ]
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2013-05-30 03:05:14 +00:00
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@-------------------------------------------------------------------------------
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@ The first word should be relocated to the code address in .text section.
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@ Besides, since this function is using compact model 0, thus we have to
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@ add an relocation to __aeabi_unwind_cpp_pr0.
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@-------------------------------------------------------------------------------
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@ CHECK: Relocations [
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@ CHECK: 0x0 R_ARM_PREL31 .text 0x0
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@ CHECK: 0x0 R_ARM_NONE __aeabi_unwind_cpp_pr0 0x0
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@ CHECK: ]
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