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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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178615 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
parent
729c19482f
commit
04011e8429
@ -223,10 +223,13 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
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}
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void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
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if (T.getArch() != Triple::mips &&
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T.getArch() != Triple::mipsel &&
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T.getArch() != Triple::mips64 &&
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T.getArch() != Triple::mips64el )
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if (T.getArch() == Triple::mips ||
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T.getArch() == Triple::mipsel)
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FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
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else if (T.getArch() == Triple::mips64 ||
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T.getArch() == Triple::mips64el)
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FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
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else
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FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
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if (T.getArch() == Triple::x86) {
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@ -1,52 +0,0 @@
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; This tests .eh_frame CIE descriptor for the.
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; Data alignment factor
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; RUN: llc -filetype=obj -mcpu=mips64r2 -mattr=n64 -march=mips64el %s -o - \
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; RUN: | llvm-objdump -s - | FileCheck %s
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; N64
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; CHECK: Contents of section .eh_frame:
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; CHECK-NEXT: 0000 1c000000 00000000 017a504c 52000178 .........zPLR..x
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; CHECK-NEXT: 0010 1f0b0000 00000000 00000000 000c1d00 ................
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; CHECK-NEXT: 0020 2c000000 24000000 00000000 00000000 ,...$...........
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; CHECK-NEXT: 0030 7c000000 00000000 08000000 00000000 |...............
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; CHECK-NEXT: 0040 00440e10 489f019c 02000000 00000000 .D..H...........
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; ModuleID = 'simple_throw.cpp'
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@_ZTIi = external constant i8*
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@str = private unnamed_addr constant [7 x i8] c"All ok\00"
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define i32 @main() {
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entry:
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%exception.i = tail call i8* @__cxa_allocate_exception(i64 4) nounwind
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%0 = bitcast i8* %exception.i to i32*
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store i32 5, i32* %0, align 4
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invoke void @__cxa_throw(i8* %exception.i, i8* bitcast (i8** @_ZTIi to i8*), i8* null) noreturn
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to label %.noexc unwind label %return
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.noexc: ; preds = %entry
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unreachable
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return: ; preds = %entry
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%1 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
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catch i8* null
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%2 = extractvalue { i8*, i32 } %1, 0
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%3 = tail call i8* @__cxa_begin_catch(i8* %2) nounwind
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%puts = tail call i32 @puts(i8* getelementptr inbounds ([7 x i8]* @str, i64 0, i64 0))
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tail call void @__cxa_end_catch()
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ret i32 0
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}
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declare i32 @__gxx_personality_v0(...)
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declare i8* @__cxa_begin_catch(i8*)
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declare void @__cxa_end_catch()
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declare i8* @__cxa_allocate_exception(i64)
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declare void @__cxa_throw(i8*, i8*, i8*)
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declare i32 @puts(i8* nocapture) nounwind
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@ -1,46 +1,167 @@
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// Assembler generated object test.
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// This tests .eh_frame descriptors minimally.
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// Test the bits of .eh_frame on mips that are already implemented correctly.
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// What we really need is a prettyprinter output check not unlike what
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// gnu's readobj generates instead of checking the bits for .eh_frame.
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// FIXME: This test would be a lot cleaner if llvm-objdump had the
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// --dwarf=frames option.
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// RUN: llvm-mc -filetype=obj -mcpu=mips32r2 -triple mipsel-unknown-linux -arch=mipsel %s -o - \
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// RUN: | llvm-objdump -s - | FileCheck -check-prefix=CHECK-LEO32 %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -arch=mips
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// RUN: llvm-objdump -r -s %t.o | FileCheck --check-prefix=MIPS32 %s
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// RUN: llvm-mc -filetype=obj -mcpu=mips32r2 -triple mips-unknown-linux -arch=mips %s -o - \
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// RUN: | llvm-objdump -s - | FileCheck -check-prefix=CHECK-BEO32 %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -arch=mipsel
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// RUN: llvm-objdump -r -s %t.o | FileCheck --check-prefix=MIPS32EL %s
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// RUN: llvm-mc -filetype=obj -mcpu=mips64r2 -mattr=n64 -arch=mips64el %s -o - \
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// RUN: | llvm-objdump -s - | FileCheck -check-prefix=CHECK-LE64 %s
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// RUN: llvm-mc -filetype=obj %s -o %t.o -arch=mips64
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// RUN: llvm-objdump -r -s %t.o | FileCheck --check-prefix=MIPS64 %s
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// RUN: llvm-mc -filetype=obj -mcpu=mips64r2 -mattr=n64 -arch=mips64 %s -o - \
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// RUN: | llvm-objdump -s - | FileCheck -check-prefix=CHECK-BE64 %s
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// O32 little endian
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// CHECK-LEO32: Contents of section .eh_frame:
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// CHECK-LEO32-NEXT: 0000 10000000 00000000 017a5200 017c1f01 .........zR..|..
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// CHECK-LEO32-NEXT: 0010 000c1d00 10000000 18000000 00000000 ................
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// CHECK-LEO32-NEXT: 0020 00000000 00000000 ........
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// O32 big endian
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// CHECK-BEO32: Contents of section .eh_frame:
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// CHECK-BEO32-NEXT 0000 00000010 00000000 017a5200 017c1f01 .........zR..|..
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// CHECK-BEO32-NEXT 0010 000c1d00 00000010 00000018 00000000 ................
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// CHECK-BEO32-NEXT 0020 00000000 00000000 ........
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// N64 little endian
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// CHECK-LE64: Contents of section .eh_frame:
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// CHECK-LE64-NEXT: 0000 10000000 00000000 017a5200 01781f01 .........zR..x..
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// CHECK-LE64-NEXT: 0010 000c1d00 18000000 18000000 00000000 ................
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// CHECK-LE64-NEXT: 0020 00000000 00000000 00000000 00000000 ................
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// N64 big endian
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// CHECK-BE64: Contents of section .eh_frame:
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// CHECK-BE64-NEXT: 0000 00000010 00000000 017a5200 01781f01 .........zR..x..
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// CHECK-BE64-NEXT: 0010 000c1d00 00000018 00000018 00000000 ................
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// CHECK-BE64-NEXT: 0020 00000000 00000000 00000000 00000000 ................
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// RUN: llvm-mc -filetype=obj %s -o %t.o -arch=mips64el
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// RUN: llvm-objdump -r -s %t.o | FileCheck --check-prefix=MIPS64EL %s
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func:
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.cfi_startproc
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.cfi_endproc
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// MIPS32: RELOCATION RECORDS FOR [.eh_frame]:
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// MIPS32-NEXT: R_MIPS_32
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// MIPS32: Contents of section .eh_frame:
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// MIPS32-NEXT: 0000
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// Length
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// MIPS32: 00000010
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// CIE ID
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// MIPS32: 00000000
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// Version
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// MIPS32: 01
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// Augmentation String
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// MIPS32: 7a5200
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// Code Alignment Factor
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// MIPS32: 01
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// Data Alignment Factor (-4)
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// MIPS32: 7c
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// Return Address Register
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// MIPS32: 1f
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// Augmentation Size
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// MIPS32: 01
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// MIPS32: .........zR..|..
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// MIPS32-NEXT: 0010
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// Augmentation (fde pointer encoding: DW_EH_PE_sdata4)
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// MIPS32: 0b
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// FIXME: The instructions are different from the ones produces by gas.
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// MIPS32EL: RELOCATION RECORDS FOR [.eh_frame]:
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// MIPS32EL-NEXT: R_MIPS_32
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// MIPS32EL: Contents of section .eh_frame:
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// MIPS32EL-NEXT: 0000
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// Length
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// MIPS32EL: 10000000
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// CIE ID
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// MIPS32EL: 00000000
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// Version
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// MIPS32EL: 01
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// Augmentation String
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// MIPS32EL: 7a5200
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// Code Alignment Factor
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// MIPS32EL: 01
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// Data Alignment Factor (-4)
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// MIPS32EL: 7c
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// Return Address Register
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// MIPS32EL: 1f
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// Augmentation Size
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// MIPS32EL: 01
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// MIPS32EL: .........zR..|..
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// MIPS32EL-NEXT: 0010
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// Augmentation (fde pointer encoding: DW_EH_PE_sdata4)
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// MIPS32EL: 0b
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// FIXME: The instructions are different from the ones produces by gas.
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// MIPS64: RELOCATION RECORDS FOR [.eh_frame]:
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// MIPS64-NEXT: R_MIPS_64
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// MIPS64: Contents of section .eh_frame:
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// MIPS64-NEXT: 0000
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// Length
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// MIPS64: 00000010
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// CIE ID
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// MIPS64: 00000000
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// Version
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// MIPS64: 01
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// Augmentation String
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// MIPS64: 7a5200
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// Code Alignment Factor
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// MIPS64: 01
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// Data Alignment Factor (-8). GAS uses -4. Should be ok as long as all
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// offsets we need are a multiple of 8.
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// MIPS64: 78
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// Return Address Register
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// MIPS64: 1f
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// Augmentation Size
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// MIPS64: 01
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// MIPS64: .........zR..x..
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// MIPS64-NEXT: 0010
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// Augmentation (fde pointer encoding: DW_EH_PE_sdata8)
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// MIPS64: 0c
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// FIXME: The instructions are different from the ones produces by gas.
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// MIPS64EL: RELOCATION RECORDS FOR [.eh_frame]:
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// FIXME: llvm-objdump currently misprints the relocations for mips64el
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// MIPS64EL: Contents of section .eh_frame:
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// MIPS64EL-NEXT: 0000
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// Length
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// MIPS64EL: 10000000
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// CIE ID
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// MIPS64EL: 00000000
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// Version
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// MIPS64EL: 01
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// Augmentation String
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// MIPS64EL: 7a5200
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// Code Alignment Factor
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// MIPS64EL: 01
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// Data Alignment Factor (-8). GAS uses -4. Should be ok as long as all
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// offsets we need are a multiple of 8.
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// MIPS64EL: 78
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// Return Address Register
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// MIPS64EL: 1f
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// Augmentation Size
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// MIPS64EL: 01
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// MIPS64EL: .........zR..x..
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// MIPS64EL-NEXT: 0010
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// Augmentation (fde pointer encoding: DW_EH_PE_sdata8)
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// MIPS64EL: 0c
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// FIXME: The instructions are different from the ones produces by gas.
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@ -1,21 +0,0 @@
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// This just tests that a relocation of the specified type shows up as the first
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// relocation in the relocation section for .eh_frame when produced by the
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// assembler.
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// RUN: llvm-mc -filetype=obj %s -o - -triple mips-unknown-unknown | \
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// RUN: llvm-objdump -r - | FileCheck --check-prefix=MIPS32 %s
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// RUN: llvm-mc -filetype=obj %s -o - -triple mips64-unknown-unknown | \
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// RUN: llvm-objdump -r - | FileCheck --check-prefix=MIPS64 %s
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// PR15448
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func:
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.cfi_startproc
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.cfi_endproc
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// MIPS32: RELOCATION RECORDS FOR [.eh_frame]:
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// MIPS32-NEXT: R_MIPS_32
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// MIPS64: RELOCATION RECORDS FOR [.eh_frame]:
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// MIPS64-NEXT: R_MIPS_64
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