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llvm-project/llvm/test/MC/Mips/eh-frame.s

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Fix the fde encoding used by mips to match gas. This finally fixes the encoding. The patch also * Removes eh-frame.ll. It was an unnecessary .ll to .o test that was checking the wrong value. * Merge fde-reloc.s and eh-frame.s into a single test, since the only difference was the run lines. * Don't blindly test the content of the entire .eh_frame section. It makes it hard to anyone actually fixing a bug and hitting a difference in a binary blob. Instead, use a CHECK for each field and document what is being checked. llvm-svn: 178615
2013-04-03 11:13:19 +08:00
// Test the bits of .eh_frame on mips that are already implemented correctly.
Mips direct object exception handling regression Revision 177141 caused a regression in all but mips64 little endian. That is because none of the other Mips targets had test cases checking the contents of the .eh_frame section. This patch fixes both the llvm code and adds an assembler test case to include the current 4 flavors. The test cases unfortunately rely on llvm-objdump. A preferable method would be to use a pretty printer output such as what readelf -wf <elf_file> would give. I also changed the name of the test case to correct a typo. llvm-svn: 178506
2013-04-02 05:55:15 +08:00
[mips] Use llvm-mc -triple option instead of combination of arch,target-abi,mcpu. NFC llvm-svn: 348914
2018-12-12 15:03:04 +08:00
// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips-unknown-linux-gnu
[mips] Use llvm-dwarfdump to simplify the test. NFC llvm-svn: 314222
2017-09-27 01:02:35 +08:00
// RUN: llvm-objdump -r -section=.rel.eh_frame %t.o | FileCheck --check-prefix=REL32 %s
// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefix=DWARF32 %s
Mips direct object exception handling regression Revision 177141 caused a regression in all but mips64 little endian. That is because none of the other Mips targets had test cases checking the contents of the .eh_frame section. This patch fixes both the llvm code and adds an assembler test case to include the current 4 flavors. The test cases unfortunately rely on llvm-objdump. A preferable method would be to use a pretty printer output such as what readelf -wf <elf_file> would give. I also changed the name of the test case to correct a typo. llvm-svn: 178506
2013-04-02 05:55:15 +08:00
[mips] Use llvm-mc -triple option instead of combination of arch,target-abi,mcpu. NFC llvm-svn: 348914
2018-12-12 15:03:04 +08:00
// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mipsel-unknown-linux-gnu
[mips] Use llvm-dwarfdump to simplify the test. NFC llvm-svn: 314222
2017-09-27 01:02:35 +08:00
// RUN: llvm-objdump -r -section=.rel.eh_frame %t.o | FileCheck --check-prefix=REL32 %s
// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefix=DWARF32 %s
Mips direct object exception handling regression Revision 177141 caused a regression in all but mips64 little endian. That is because none of the other Mips targets had test cases checking the contents of the .eh_frame section. This patch fixes both the llvm code and adds an assembler test case to include the current 4 flavors. The test cases unfortunately rely on llvm-objdump. A preferable method would be to use a pretty printer output such as what readelf -wf <elf_file> would give. I also changed the name of the test case to correct a typo. llvm-svn: 178506
2013-04-02 05:55:15 +08:00
[mips] Use llvm-mc -triple option instead of combination of arch,target-abi,mcpu. NFC llvm-svn: 348914
2018-12-12 15:03:04 +08:00
// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips64-unknown-linux-gnu
[mips] Use llvm-dwarfdump to simplify the test. NFC llvm-svn: 314222
2017-09-27 01:02:35 +08:00
// RUN: llvm-objdump -r -section=.rela.eh_frame %t.o | FileCheck --check-prefix=REL64 %s
// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefix=DWARF64 %s
Mips direct object exception handling regression Revision 177141 caused a regression in all but mips64 little endian. That is because none of the other Mips targets had test cases checking the contents of the .eh_frame section. This patch fixes both the llvm code and adds an assembler test case to include the current 4 flavors. The test cases unfortunately rely on llvm-objdump. A preferable method would be to use a pretty printer output such as what readelf -wf <elf_file> would give. I also changed the name of the test case to correct a typo. llvm-svn: 178506
2013-04-02 05:55:15 +08:00
[mips] Use llvm-mc -triple option instead of combination of arch,target-abi,mcpu. NFC llvm-svn: 348914
2018-12-12 15:03:04 +08:00
// RUN: llvm-mc -filetype=obj %s -o %t.o -triple mips64el-unknown-linux-gnu
[mips] Use llvm-dwarfdump to simplify the test. NFC llvm-svn: 314222
2017-09-27 01:02:35 +08:00
// RUN: llvm-objdump -r -section=.rela.eh_frame %t.o | FileCheck --check-prefix=REL64 %s
// RUN: llvm-dwarfdump -eh-frame %t.o | FileCheck --check-prefix=DWARF64 %s
Mips direct object exception handling regression Revision 177141 caused a regression in all but mips64 little endian. That is because none of the other Mips targets had test cases checking the contents of the .eh_frame section. This patch fixes both the llvm code and adds an assembler test case to include the current 4 flavors. The test cases unfortunately rely on llvm-objdump. A preferable method would be to use a pretty printer output such as what readelf -wf <elf_file> would give. I also changed the name of the test case to correct a typo. llvm-svn: 178506
2013-04-02 05:55:15 +08:00
Fix the fde encoding used by mips to match gas. This finally fixes the encoding. The patch also * Removes eh-frame.ll. It was an unnecessary .ll to .o test that was checking the wrong value. * Merge fde-reloc.s and eh-frame.s into a single test, since the only difference was the run lines. * Don't blindly test the content of the entire .eh_frame section. It makes it hard to anyone actually fixing a bug and hitting a difference in a binary blob. Instead, use a CHECK for each field and document what is being checked. llvm-svn: 178615
2013-04-03 11:13:19 +08:00
func:
.cfi_startproc
.cfi_endproc
Mips direct object exception handling regression Revision 177141 caused a regression in all but mips64 little endian. That is because none of the other Mips targets had test cases checking the contents of the .eh_frame section. This patch fixes both the llvm code and adds an assembler test case to include the current 4 flavors. The test cases unfortunately rely on llvm-objdump. A preferable method would be to use a pretty printer output such as what readelf -wf <elf_file> would give. I also changed the name of the test case to correct a typo. llvm-svn: 178506
2013-04-02 05:55:15 +08:00
[mips] Use llvm-dwarfdump to simplify the test. NFC llvm-svn: 314222
2017-09-27 01:02:35 +08:00
// REL32: R_MIPS_32
// REL64: R_MIPS_64/R_MIPS_NONE/R_MIPS_NONE
// DWARF32: 00000000 00000010 ffffffff CIE
// DWARF32: Version: 1
// DWARF32: Augmentation: "zR"
// DWARF32: Code alignment factor: 1
// DWARF32: Data alignment factor: -4
// DWARF32: Return address column: 31
// DWARF32: Augmentation data: 0B
// ^^ fde pointer encoding: DW_EH_PE_sdata4
[mips] LLVM and GAS now use same instructions for CFA Definition. NFCI LLVM previously used `DW_CFA_def_cfa` instruction in .eh_frame to set the register and offset for current CFA rule. We change it to `DW_CFA_def_cfa_register` which is the same one used by GAS that only changes the register but keeping the old offset. Patch by Mirko Brkusanin. Differential Revision: https://reviews.llvm.org/D61899 llvm-svn: 360765
2019-05-15 20:05:27 +08:00
// DWARF32: DW_CFA_def_cfa_register: reg29
[mips] Use llvm-dwarfdump to simplify the test. NFC llvm-svn: 314222
2017-09-27 01:02:35 +08:00
//
// DWARF32: 00000014 00000010 00000018 FDE cie=00000018 pc=00000000...00000000
// DWARF32: DW_CFA_nop:
// DWARF32: DW_CFA_nop:
// DWARF32: DW_CFA_nop:
// DWARF64: 00000000 00000010 ffffffff CIE
// DWARF64: Version: 1
// DWARF64: Augmentation: "zR"
// DWARF64: Code alignment factor: 1
// DWARF64: Data alignment factor: -8
// ^^ GAS uses -4. Should be ok as long as
// all offsets we need are a multiple of 8.
// DWARF64: Return address column: 31
// DWARF64: Augmentation data: 0C
// ^^ fde pointer encoding: DW_EH_PE_sdata8
[mips] LLVM and GAS now use same instructions for CFA Definition. NFCI LLVM previously used `DW_CFA_def_cfa` instruction in .eh_frame to set the register and offset for current CFA rule. We change it to `DW_CFA_def_cfa_register` which is the same one used by GAS that only changes the register but keeping the old offset. Patch by Mirko Brkusanin. Differential Revision: https://reviews.llvm.org/D61899 llvm-svn: 360765
2019-05-15 20:05:27 +08:00
// DWARF64: DW_CFA_def_cfa_register: reg29
[mips] Use llvm-dwarfdump to simplify the test. NFC llvm-svn: 314222
2017-09-27 01:02:35 +08:00
//
// DWARF64: 00000014 00000018 00000018 FDE cie=00000018 pc=00000000...00000000
// DWARF64: DW_CFA_nop:
// DWARF64: DW_CFA_nop:
// DWARF64: DW_CFA_nop: