// RUN: llvm-mc -triple i386-apple-darwin9 -mcpu=pentiumpro %s -filetype=obj -o - | llvm-readobj --file-headers -S --sd -r --symbols --macho-segment --macho-dysymtab --macho-indirect-symbols | FileCheck %s # 1 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret # nop # 0x90 .align 1, 0x90 ret # 2 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret # xchg %ax,%ax # 0x66, 0x90 .align 2, 0x90 ret # 3 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret # nopl (%[re]ax) # 0x0f, 0x1f, 0x00 .align 2, 0x90 ret # 4 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret ret ret # nopl 0(%[re]ax) # 0x0f, 0x1f, 0x40, 0x00 .align 3, 0x90 ret # 5 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret ret # nopl 0(%[re]ax,%[re]ax,1) # 0x0f, 0x1f, 0x44, 0x00, 0x00 .align 3, 0x90 ret # 6 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret # nopw 0(%[re]ax,%[re]ax,1) # 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 .align 3, 0x90 ret # 7 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret # nopl 0L(%[re]ax) # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00 .align 3, 0x90 ret # 8 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret ret ret ret ret ret ret # nopl 0L(%[re]ax,%[re]ax,1) # 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 .align 3, 0x90 ret # 9 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret ret ret ret ret ret # nopw 0L(%[re]ax,%[re]ax,1) # 0x66, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 .align 4, 0x90 ret # 10 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret ret ret ret ret ret # nopw %cs:0L(%[re]ax,%[re]ax,1) # 0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 .align 4, 0x90 ret # 11 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret ret ret ret # nopw %cs:0L(%[re]ax,%[re]ax,1) # 0x66, 0x66, 0x2e, 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 .align 4, 0x90 ret # 12 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret ret ret # nopw 0(%[re]ax,%[re]ax,1) # nopw 0(%[re]ax,%[re]ax,1) # 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00, # 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 .align 4, 0x90 ret # 13 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret ret # nopw 0(%[re]ax,%[re]ax,1) # nopl 0L(%[re]ax) # 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00, # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00 .align 4, 0x90 ret # 14 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret ret # nopl 0L(%[re]ax) # nopl 0L(%[re]ax) # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00, # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00 .align 4, 0x90 ret # 15 byte nop test .align 4, 0 # start with 16 byte alignment filled with zeros ret # nopl 0L(%[re]ax) # nopl 0L(%[re]ax,%[re]ax,1) # 0x0f, 0x1f, 0x80, 0x00, 0x00, 0x00, 0x00, # 0x0f, 0x1f, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00 .align 4, 0x90 ret # Only the .text sections gets optimal nops. .section __TEXT,__const f0: .byte 0 .align 4, 0x90 .long 0 // CHECK: File: // CHECK: Format: Mach-O 32-bit i386 // CHECK: Arch: i386 // CHECK: AddressSize: 32bit // CHECK: MachHeader { // CHECK: Magic: Magic (0xFEEDFACE) // CHECK: CpuType: X86 (0x7) // CHECK: CpuSubType: CPU_SUBTYPE_I386_ALL (0x3) // CHECK: FileType: Relocatable (0x1) // CHECK: NumOfLoadCommands: 4 // CHECK: SizeOfLoadCommands: 312 // CHECK: Flags [ (0x0) // CHECK: ] // 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: 0x151 // CHECK: Offset: 340 // CHECK: Alignment: 4 // CHECK: RelocationOffset: 0x0 // CHECK: RelocationCount: 0 // CHECK: Type: Regular (0x0) // CHECK: Attributes [ (0x800004) // CHECK: PureInstructions (0x800000) // CHECK: SomeInstructions (0x4) // CHECK: ] // CHECK: Reserved1: 0x0 // CHECK: Reserved2: 0x0 // CHECK: SectionData ( // CHECK: 0000: C390C300 00000000 00000000 00000000 |................| // CHECK: 0010: C3C36690 C3000000 00000000 00000000 |..f.............| // CHECK: 0020: C30F1F00 C3000000 00000000 00000000 |................| // CHECK: 0030: C3C3C3C3 0F1F4000 C3000000 00000000 |......@.........| // CHECK: 0040: C3C3C30F 1F440000 C3000000 00000000 |.....D..........| // CHECK: 0050: C3C3660F 1F440000 C3000000 00000000 |..f..D..........| // CHECK: 0060: C30F1F80 00000000 C3000000 00000000 |................| // CHECK: 0070: C3C3C3C3 C3C3C3C3 C3000000 00000000 |................| // CHECK: 0080: C3C3C3C3 C3C3C366 0F1F8400 00000000 |.......f........| // CHECK: 0090: C3000000 00000000 00000000 00000000 |................| // CHECK: 00A0: C3C3C3C3 C3C3C366 0F1F8400 00000000 |.......f........| // CHECK: 00B0: C3000000 00000000 00000000 00000000 |................| // CHECK: 00C0: C3C3C3C3 C3662E0F 1F840000 00000090 |.....f..........| // CHECK: 00D0: C3000000 00000000 00000000 00000000 |................| // CHECK: 00E0: C3C3C3C3 662E0F1F 84000000 00006690 |....f.........f.| // CHECK: 00F0: C3000000 00000000 00000000 00000000 |................| // CHECK: 0100: C3C3C366 2E0F1F84 00000000 000F1F00 |...f............| // CHECK: 0110: C3000000 00000000 00000000 00000000 |................| // CHECK: 0120: C3C3662E 0F1F8400 00000000 0F1F4000 |..f...........@.| // CHECK: 0130: C3000000 00000000 00000000 00000000 |................| // CHECK: 0140: C3662E0F 1F840000 0000000F 1F440000 |.f...........D..| // CHECK: 0150: C3 |.| // CHECK: ) // CHECK: } // CHECK: Section { // CHECK: Index: 1 // CHECK: Name: __const (5F 5F 63 6F 6E 73 74 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: 0x160 // CHECK: Size: 0x14 // CHECK: Offset: 692 // CHECK: Alignment: 4 // CHECK: RelocationOffset: 0x0 // CHECK: RelocationCount: 0 // CHECK: Type: Regular (0x0) // CHECK: Attributes [ (0x0) // CHECK: ] // CHECK: Reserved1: 0x0 // CHECK: Reserved2: 0x0 // CHECK: SectionData ( // CHECK: 0000: 00909090 90909090 90909090 90909090 |................| // CHECK: 0010: 00000000 |....| // CHECK: ) // CHECK: } // CHECK: ] // CHECK: Relocations [ // CHECK: ] // CHECK: Symbols [ // CHECK: Symbol { // CHECK: Name: f0 (1) // CHECK: Type: Section (0xE) // CHECK: Section: __const (0x2) // CHECK: RefType: UndefinedNonLazy (0x0) // CHECK: Flags [ (0x0) // CHECK: ] // CHECK: Value: 0x160 // CHECK: } // CHECK: ] // CHECK: Indirect Symbols { // CHECK: Number: 0 // CHECK: Symbols [ // CHECK: ] // CHECK: } // CHECK: Segment { // CHECK: Cmd: LC_SEGMENT // CHECK: Name: // CHECK: Size: 192 // CHECK: vmaddr: 0x0 // CHECK: vmsize: 0x174 // CHECK: fileoff: 340 // CHECK: filesize: 372 // CHECK: maxprot: rwx // CHECK: initprot: rwx // CHECK: nsects: 2 // CHECK: flags: 0x0 // CHECK: } // CHECK: Dysymtab { // CHECK: ilocalsym: 0 // CHECK: nlocalsym: 1 // CHECK: iextdefsym: 1 // CHECK: nextdefsym: 0 // CHECK: iundefsym: 1 // 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: }