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https://github.com/c64scene-ar/llvm-6502.git
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Currently, llvm always emits a DWARF CIE with a version of 1, even when emitting DWARF 3 or 4, which both support CIE version 3. This patch makes it emit the newer CIE version when we are emitting DWARF 3 or 4. This will not reduce compatibility, as we already emit other DWARF3/4 features, and is worth doing as the DWARF3 spec removed some ambiguities in the interpretation of call frame information. It also fixes a minor bug where the "return address" field of the CIE was encoded as a ULEB128, which is only valid when the CIE version is 3. There are no test changes for this, because (as far as I can tell) none of the platforms that we test have a return address register with a DWARF register number >127. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211272 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
1.8 KiB
ArmAsm
68 lines
1.8 KiB
ArmAsm
# RUN: llvm-mc -triple=s390x-linux-gnu -filetype=obj %s -o %t
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# RUN: llvm-objdump -s %t | FileCheck %s
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.text
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.globl foo
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.align 4
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.type foo,@function
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foo: # @foo
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.cfi_startproc
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.cfi_personality 155, DW.ref.__gxx_personality_v0
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.cfi_lsda 27, .Lexception0
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stmg %r14, %r15, 112(%r15)
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.cfi_offset %r14, -48
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.cfi_offset %r15, -40
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aghi %r15, -160
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.cfi_def_cfa_offset 320
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lmg %r14, %r15, 272(%r15)
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br %r14
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.size foo, .-foo
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.cfi_endproc
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.section .gcc_except_table,"a",@progbits
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.align 4
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.Lexception0:
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.hidden DW.ref.__gxx_personality_v0
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.weak DW.ref.__gxx_personality_v0
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.section .data.DW.ref.__gxx_personality_v0,"aGw",@progbits,DW.ref.__gxx_personality_v0,comdat
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.align 8
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.type DW.ref.__gxx_personality_v0,@object
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.size DW.ref.__gxx_personality_v0, 8
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DW.ref.__gxx_personality_v0:
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.quad __gxx_personality_v0
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# The readelf rendering is:
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#
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# Contents of the .eh_frame section:
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#
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# 00000000 0000001c 00000000 CIE
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# Version: 3
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# Augmentation: "zPLR"
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# Code alignment factor: 1
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# Data alignment factor: -8
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# Return address column: 14
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# Augmentation data: 9b ff ff ff ed 1b 1b
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#
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# DW_CFA_def_cfa: r15 ofs 160
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# DW_CFA_nop
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# DW_CFA_nop
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# DW_CFA_nop
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#
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# 00000020 0000001c 00000024 FDE cie=00000000 pc=00000000..00000012
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# Augmentation data: ff ff ff cf
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#
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# DW_CFA_advance_loc: 6 to 00000006
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# DW_CFA_offset: r14 at cfa-48
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# DW_CFA_offset: r15 at cfa-40
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# DW_CFA_advance_loc: 4 to 0000000a
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# DW_CFA_def_cfa_offset: 320
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# DW_CFA_nop
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# DW_CFA_nop
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#
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# CHECK: Contents of section .eh_frame:
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# CHECK-NEXT: 0000 0000001c 00000000 037a504c 52000178 .........zPLR..x
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# CHECK-NEXT: 0010 0e079b00 0000001b 1b0c0fa0 01000000 ................
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# CHECK-NEXT: 0020 0000001c 00000024 00000000 00000012 .......$........
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# CHECK-NEXT: 0030 04000000 00468e06 8f05440e c0020000 .....F....D.....
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