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84c56f2c7c
While the value of the CIE pointer field in a DWARF FDE record is an offset to the corresponding CIE record from the beginning of the section, for EH FDE records it is relative to the current offset. Previously, we did not make that distinction when dumped both kinds of FDE records and just printed the same value for the CIE pointer field and the CIE offset; that was acceptable for DWARF FDEs but was wrong for EH FDEs. This patch fixes the issue by explicitly printing the offset of the linked CIE object. Differential Revision: https://reviews.llvm.org/D74613
97 lines
4.9 KiB
ArmAsm
97 lines
4.9 KiB
ArmAsm
// Test the bits of .eh_frame on mips that are already implemented correctly.
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips-unknown-linux-gnu
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,ABS32 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF32,DWARF32_ABS %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mipsel-unknown-linux-gnu
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,ABS32 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF32,DWARF32_ABS %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips64-unknown-linux-gnu
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,ABS64 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF64,DWARF64_ABS %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips64el-unknown-linux-gnu
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,ABS64 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF64,DWARF64_ABS %s
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/// Check that position-indenpendent code use PC-relative relocations:
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips-unknown-linux-gnu --position-independent
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,PIC32 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF32,DWARF32_PIC %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mipsel-unknown-linux-gnu --position-independent
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,PIC32 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF32,DWARF32_PIC %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips64-unknown-linux-gnu --position-independent
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,PIC64 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF64,DWARF64_PIC %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips64el-unknown-linux-gnu --position-independent
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,PIC64 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF64,DWARF64_PIC %s
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/// However using the large code model forces R_MIPS_64 since there is no R_MIPS_PC64 relocation:
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips64-unknown-linux-gnu --position-independent --large-code-model
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,ABS64 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF64,DWARF64_ABS %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips64el-unknown-linux-gnu --position-independent --large-code-model
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// RUN: llvm-readobj -r %t.o | FileCheck --check-prefixes=RELOCS,ABS64 %s
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// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefixes=DWARF64,DWARF64_ABS %s
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func:
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.cfi_startproc
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.cfi_endproc
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// RELOCS: Relocations [
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// RELOCS: Section ({{.+}}) .rel{{a?}}.eh_frame {
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// ABS32-NEXT: R_MIPS_32
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// ABS64-NEXT: R_MIPS_64/R_MIPS_NONE/R_MIPS_NONE
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// PIC32-NEXT: R_MIPS_PC32
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// PIC64-NEXT: R_MIPS_PC32/R_MIPS_NONE/R_MIPS_NONE
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// RELOCS-NEXT: }
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// DWARF32: 00000000 00000010 00000000 CIE
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// DWARF32-NEXT: Version: 1
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// DWARF32-NEXT: Augmentation: "zR"
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// DWARF32-NEXT: Code alignment factor: 1
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// DWARF32-NEXT: Data alignment factor: -4
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// DWARF32-NEXT: Return address column: 31
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// DWARF32_ABS-NEXT: Augmentation data: 0B
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// ^^ fde pointer encoding: DW_EH_PE_sdata4
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// DWARF32_PIC-NEXT: Augmentation data: 1B
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// ^^ fde pointer encoding: DW_EH_PE_pcrel | DW_EH_PE_sdata4
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// DWARF32-EMPTY:
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// DWARF32-NEXT: DW_CFA_def_cfa_register: reg29
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//
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// DWARF32: 00000014 00000010 00000018 FDE cie=00000000 pc=00000000...00000000
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// DWARF32-NEXT: DW_CFA_nop:
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// DWARF32-NEXT: DW_CFA_nop:
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// DWARF32-NEXT: DW_CFA_nop:
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// DWARF64: 00000000 00000010 00000000 CIE
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// DWARF64-NEXT: Version: 1
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// DWARF64-NEXT: Augmentation: "zR"
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// DWARF64-NEXT: Code alignment factor: 1
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// DWARF64-NEXT: Data alignment factor: -8
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// ^^ GAS uses -4. Should be ok as long as
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// all offsets we need are a multiple of 8.
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// DWARF64-NEXT: Return address column: 31
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// DWARF64_ABS-NEXT: Augmentation data: 0C
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// ^^ fde pointer encoding: DW_EH_PE_sdata8
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// DWARF64_PIC: Augmentation data: 1B
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// ^^ fde pointer encoding: DW_EH_PE_pcrel | DW_EH_PE_sdata4
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// DWARF64-EMPTY:
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// DWARF64-NEXT: DW_CFA_def_cfa_register: reg29
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// DWARF64_PIC-NEXT: DW_CFA_nop:
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//
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// DWARF64_ABS: 00000014 00000018 00000018 FDE cie=00000000 pc=00000000...00000000
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// DWARF64_PIC: 00000014 00000010 00000018 FDE cie=00000000 pc=00000000...00000000
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// DWARF64-NEXT: DW_CFA_nop:
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// DWARF64-NEXT: DW_CFA_nop:
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// DWARF64-NEXT: DW_CFA_nop:
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