6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-22 09:29:31 +00:00
Code Issues Projects Releases Wiki Activity

Add support for ARM and AArch64 BE object files

Browse Source 
This change fixes the ARM and AArch64 relocation visitors in
RelocVisitor.  They were unconditionally assuming the object data are
little-endian.  Tests have been added to ensure that the
llvm-dwarfdump utility does not crash when processing big-endian
object files.

Patch by Charlie Turner.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218389 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Renato Golin 2014-09-24 17:01:06 +00:00
parent faac033f73
commit 1513681a0b
5 changed files with 51 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
include/llvm/Object/RelocVisitor.h
View File

@ -306,7 +306,8 @@ private:
// AArch64 ELF
RelocToApply visitELF_AARCH64_ABS32(RelocationRef R, uint64_t Value) {
int64_t Addend = getAddend64LE(R);
int64_t Addend;
getELFRelocationAddend(R, Addend);
int64_t Res = Value + Addend;
// Overflow check allows for both signed and unsigned interpretation.
@ -317,7 +318,8 @@ private:
}
RelocToApply visitELF_AARCH64_ABS64(RelocationRef R, uint64_t Value) {
int64_t Addend = getAddend64LE(R);
int64_t Addend;
getELFRelocationAddend(R, Addend);
return RelocToApply(Value + Addend, 8);
}
@ -354,8 +356,15 @@ private:
}
RelocToApply visitELF_ARM_ABS32(RelocationRef R, uint64_t Value) {
int64_t Addend = getAddend32LE(R);
return RelocToApply(Value + Addend, 4);
int64_t Addend;
getELFRelocationAddend(R, Addend);
int64_t Res = Value + Addend;
// Overflow check allows for both signed and unsigned interpretation.
if (Res < INT32_MIN || Res > UINT32_MAX)
HasError = true;
return RelocToApply(static_cast<uint32_t>(Res), 4);
}
};

16
test/tools/llvm-dwarfdump/AArch64/big-endian-dump.ll Normal file
View File

@ -0,0 +1,16 @@
; RUN: llc -O0 -filetype=obj -o %t1 < %s
; RUN: llvm-dwarfdump %t1
target datalayout = "E-m:e-i64:64-i128:128-n32:64-S128"
target triple = "aarch64_be-none--eabi"
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4}
!llvm.ident = !{!5}
!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.6.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !2, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/a/empty.c] [DW_LANG_C99]
!1 = metadata !{metadata !"empty.c", metadata !"/a"}
!2 = metadata !{}
!3 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!4 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
!5 = metadata !{metadata !"clang version 3.6.0 "}

2
test/tools/llvm-dwarfdump/AArch64/lit.local.cfg Normal file
View File

@ -0,0 +1,2 @@
if not 'AArch64' in config.root.targets:
config.unsupported = True

18
test/tools/llvm-dwarfdump/ARM/big-endian-dump.ll Normal file
View File

@ -0,0 +1,18 @@
; RUN: llc -O0 -filetype=obj -o %t1 < %s
; RUN: llvm-dwarfdump %t1
target datalayout = "E-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
target triple = "armebv8-none--eabi"
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5, !6}
!llvm.ident = !{!7}
!0 = metadata !{i32 786449, metadata !1, i32 12, metadata !"clang version 3.6.0 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !2, metadata !2, metadata !2, metadata !"", i32 1} ; [ DW_TAG_compile_unit ] [/a/empty.c] [DW_LANG_C99]
!1 = metadata !{metadata !"empty.c", metadata !"/a"}
!2 = metadata !{}
!3 = metadata !{i32 2, metadata !"Dwarf Version", i32 4}
!4 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
!5 = metadata !{i32 1, metadata !"wchar_size", i32 4}
!6 = metadata !{i32 1, metadata !"min_enum_size", i32 4}
!7 = metadata !{metadata !"clang version 3.6.0 "}

2
test/tools/llvm-dwarfdump/ARM/lit.local.cfg Normal file
View File

@ -0,0 +1,2 @@
if not 'ARM' in config.root.targets:
config.unsupported = True