mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
e025323d29
This patch adds support for the MachO .alt_entry assembly directive, and uses it for global aliases with non-zero GEP offsets. The alt_entry flag indicates that a symbol should be layed out immediately after the preceding symbol. Conceptually it introduces an alternate entry point for a function or data structure. E.g.: safe_foo: // check preconditions for foo .alt_entry fast_foo fast_foo: // body of foo, can assume preconditions. The .alt_entry flag is also implicitly set on assembly aliases of the form: a = b + C where C is a non-zero constant, since these have the same effect as an alt_entry symbol: they introduce a label that cannot be moved relative to the preceding one. Setting the alt_entry flag on aliases of this form fixes http://llvm.org/PR25381. llvm-svn: 263521
179 lines
4.8 KiB
ArmAsm
179 lines
4.8 KiB
ArmAsm
// RUN: llvm-mc -triple x86_64-apple-darwin10 %s -filetype=obj -o - | llvm-readobj -file-headers -s -r -t -macho-segment -macho-dysymtab -macho-indirect-symbols | FileCheck %s
|
|
|
|
_bar:
|
|
nop
|
|
_foo:
|
|
nop
|
|
|
|
.set foo_set1, (_foo + 0xffff0000)
|
|
.set foo_set2, (_foo - _bar + 0xffff0000)
|
|
|
|
foo_equals = (_foo + 0xffff0000)
|
|
foo_equals2 = (_foo - _bar + 0xffff0000)
|
|
|
|
.globl foo_set1_global;
|
|
.set foo_set1_global, (_foo + 0xffff0000)
|
|
|
|
.globl foo_set2_global;
|
|
.set foo_set2_global, (_foo - _bar + 0xffff0000)
|
|
|
|
// CHECK: File: <stdin>
|
|
// CHECK: Format: Mach-O 64-bit x86-64
|
|
// CHECK: Arch: x86_64
|
|
// CHECK: AddressSize: 64bit
|
|
// CHECK: MachHeader {
|
|
// CHECK: Magic: Magic64 (0xFEEDFACF)
|
|
// CHECK: CpuType: X86-64 (0x1000007)
|
|
// CHECK: CpuSubType: CPU_SUBTYPE_X86_64_ALL (0x3)
|
|
// CHECK: FileType: Relocatable (0x1)
|
|
// CHECK: NumOfLoadCommands: 4
|
|
// CHECK: SizeOfLoadCommands: 272
|
|
// CHECK: Flags [ (0x0)
|
|
// CHECK: ]
|
|
// CHECK: Reserved: 0x0
|
|
// CHECK: }
|
|
// CHECK: Sections [
|
|
// CHECK: Section {
|
|
// CHECK: Index: 0
|
|
// CHECK: Name: __text (5F 5F 74 65 78 74 00 00 00 00 00 00 00 00 00 00)
|
|
// CHECK: Segment: __TEXT (5F 5F 54 45 58 54 00 00 00 00 00 00 00 00 00 00)
|
|
// CHECK: Address: 0x0
|
|
// CHECK: Size: 0x2
|
|
// CHECK: Offset: 304
|
|
// CHECK: Alignment: 0
|
|
// CHECK: RelocationOffset: 0x0
|
|
// CHECK: RelocationCount: 0
|
|
// CHECK: Type: 0x0
|
|
// CHECK: Attributes [ (0x800004)
|
|
// CHECK: PureInstructions (0x800000)
|
|
// CHECK: SomeInstructions (0x4)
|
|
// CHECK: ]
|
|
// CHECK: Reserved1: 0x0
|
|
// CHECK: Reserved2: 0x0
|
|
// CHECK: Reserved3: 0x0
|
|
// CHECK: }
|
|
// CHECK: ]
|
|
// CHECK: Relocations [
|
|
// CHECK: ]
|
|
// CHECK: Symbols [
|
|
// CHECK: Symbol {
|
|
// CHECK: Name: _bar (12)
|
|
// CHECK: Type: Section (0xE)
|
|
// CHECK: Section: __text (0x1)
|
|
// CHECK: RefType: UndefinedNonLazy (0x0)
|
|
// CHECK: Flags [ (0x0)
|
|
// CHECK: ]
|
|
// CHECK: Value: 0x0
|
|
// CHECK: }
|
|
// CHECK: Symbol {
|
|
// CHECK: Name: _foo (17)
|
|
// CHECK: Type: Section (0xE)
|
|
// CHECK: Section: __text (0x1)
|
|
// CHECK: RefType: UndefinedNonLazy (0x0)
|
|
// CHECK: Flags [ (0x0)
|
|
// CHECK: ]
|
|
// CHECK: Value: 0x1
|
|
// CHECK: }
|
|
// CHECK: Symbol {
|
|
// CHECK: Name: foo_set1 (75)
|
|
// CHECK: Type: Section (0xE)
|
|
// CHECK: Section: __text (0x1)
|
|
// CHECK: RefType: UndefinedNonLazy (0x0)
|
|
// CHECK: Flags [ (0x220)
|
|
// CHECK: AltEntry (0x200)
|
|
// CHECK: NoDeadStrip (0x20)
|
|
// CHECK: ]
|
|
// CHECK: Value: 0xFFFF0001
|
|
// CHECK: }
|
|
// CHECK: Symbol {
|
|
// CHECK: Name: foo_set2 (54)
|
|
// CHECK: Type: Abs (0x2)
|
|
// CHECK: Section: (0x0)
|
|
// CHECK: RefType: UndefinedNonLazy (0x0)
|
|
// CHECK: Flags [ (0x20)
|
|
// CHECK: NoDeadStrip (0x20)
|
|
// CHECK: ]
|
|
// CHECK: Value: 0xFFFF0001
|
|
// CHECK: }
|
|
// CHECK: Symbol {
|
|
// CHECK: Name: foo_equals (1)
|
|
// CHECK: Type: Section (0xE)
|
|
// CHECK: Section: __text (0x1)
|
|
// CHECK: RefType: UndefinedNonLazy (0x0)
|
|
// CHECK: Flags [ (0x200)
|
|
// CHECK: AltEntry (0x200)
|
|
// CHECK: ]
|
|
// CHECK: Value: 0xFFFF0001
|
|
// CHECK: }
|
|
// CHECK: Symbol {
|
|
// CHECK: Name: foo_equals2 (63)
|
|
// CHECK: Type: Abs (0x2)
|
|
// CHECK: Section: (0x0)
|
|
// CHECK: RefType: UndefinedNonLazy (0x0)
|
|
// CHECK: Flags [ (0x0)
|
|
// CHECK: ]
|
|
// CHECK: Value: 0xFFFF0001
|
|
// CHECK: }
|
|
// CHECK: Symbol {
|
|
// CHECK: Name: foo_set1_global (38)
|
|
// CHECK: Extern
|
|
// CHECK: Type: Section (0xE)
|
|
// CHECK: Section: __text (0x1)
|
|
// CHECK: RefType: UndefinedNonLazy (0x0)
|
|
// CHECK: Flags [ (0x220)
|
|
// CHECK: AltEntry (0x200)
|
|
// CHECK: NoDeadStrip (0x20)
|
|
// CHECK: ]
|
|
// CHECK: Value: 0xFFFF0001
|
|
// CHECK: }
|
|
// CHECK: Symbol {
|
|
// CHECK: Name: foo_set2_global (22)
|
|
// CHECK: Extern
|
|
// CHECK: Type: Abs (0x2)
|
|
// CHECK: Section: (0x0)
|
|
// CHECK: RefType: UndefinedNonLazy (0x0)
|
|
// CHECK: Flags [ (0x20)
|
|
// CHECK: NoDeadStrip (0x20)
|
|
// CHECK: ]
|
|
// CHECK: Value: 0xFFFF0001
|
|
// CHECK: }
|
|
// CHECK: ]
|
|
// CHECK: Indirect Symbols {
|
|
// CHECK: Number: 0
|
|
// CHECK: Symbols [
|
|
// CHECK: ]
|
|
// CHECK: }
|
|
// CHECK: Segment {
|
|
// CHECK: Cmd: LC_SEGMENT_64
|
|
// CHECK: Name:
|
|
// CHECK: Size: 152
|
|
// CHECK: vmaddr: 0x0
|
|
// CHECK: vmsize: 0x2
|
|
// CHECK: fileoff: 304
|
|
// CHECK: filesize: 2
|
|
// CHECK: maxprot: rwx
|
|
// CHECK: initprot: rwx
|
|
// CHECK: nsects: 1
|
|
// CHECK: flags: 0x0
|
|
// CHECK: }
|
|
// CHECK: Dysymtab {
|
|
// CHECK: ilocalsym: 0
|
|
// CHECK: nlocalsym: 6
|
|
// CHECK: iextdefsym: 6
|
|
// CHECK: nextdefsym: 2
|
|
// CHECK: iundefsym: 8
|
|
// CHECK: nundefsym: 0
|
|
// CHECK: tocoff: 0
|
|
// CHECK: ntoc: 0
|
|
// CHECK: modtaboff: 0
|
|
// CHECK: nmodtab: 0
|
|
// CHECK: extrefsymoff: 0
|
|
// CHECK: nextrefsyms: 0
|
|
// CHECK: indirectsymoff: 0
|
|
// CHECK: nindirectsyms: 0
|
|
// CHECK: extreloff: 0
|
|
// CHECK: nextrel: 0
|
|
// CHECK: locreloff: 0
|
|
// CHECK: nlocrel: 0
|
|
// CHECK: }
|