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MC/Mach-O/ARM: Start handling some Thumb branches.

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llvm-svn: 122547
This commit is contained in:
Daniel Dunbar 2010-12-24 16:41:46 +00:00
parent dfa31b1cf9
commit 592854a10a
2 changed files with 153 additions and 0 deletions
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14
lib/MC/MachObjectWriter.cpp
View File

@ -931,6 +931,20 @@ public:
// Report as 'long', even though that is not quite accurate.
Log2Size = llvm::Log2_32(4);
return true;
// Handle Thumb branches.
case ARM::fixup_arm_thumb_br:
Log2Size = llvm::Log2_32(2);
return true;
case ARM::fixup_arm_thumb_bl:
Log2Size = llvm::Log2_32(4);
return true;
case ARM::fixup_arm_thumb_blx:
// Report as 'long', even though that is not quite accurate.
Log2Size = llvm::Log2_32(4);
return true;
}
}
void RecordARMRelocation(const MCAssembler &Asm, const MCAsmLayout &Layout,

139
test/MC/MachO/darwin-Thumb-reloc.s Normal file
View File

@ -0,0 +1,139 @@
@ RUN: llvm-mc -n -triple thumbv7-apple-darwin10 %s -filetype=obj -o %t.obj
@ RUN: macho-dump --dump-section-data < %t.obj > %t.dump
@ RUN: FileCheck < %t.dump %s
.syntax unified
.section __TEXT,__text,regular,pure_instructions
.globl _main
.align 2
.code 16
.thumb_func _main
_main:
LPC0_0:
blx _printf
.align 2
LCPI0_0:
.long L_.str-(LPC0_0+4)
.section __TEXT,__cstring,cstring_literals
.align 2
L_.str:
.asciz "s0"
.subsections_via_symbols
@ CHECK: ('cputype', 12)
@ CHECK: ('cpusubtype', 9)
@ CHECK: ('filetype', 1)
@ CHECK: ('num_load_commands', 3)
@ CHECK: ('load_commands_size', 296)
@ CHECK: ('flag', 8192)
@ CHECK: ('load_commands', [
@ CHECK: # Load Command 0
@ CHECK: (('command', 1)
@ CHECK: ('size', 192)
@ CHECK: ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
@ CHECK: ('vm_addr', 0)
@ CHECK: ('vm_size', 11)
@ CHECK: ('file_offset', 324)
@ CHECK: ('file_size', 11)
@ CHECK: ('maxprot', 7)
@ CHECK: ('initprot', 7)
@ CHECK: ('num_sections', 2)
@ CHECK: ('flags', 0)
@ CHECK: ('sections', [
@ CHECK: # Section 0
@ CHECK: (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
@ CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
@ CHECK: ('address', 0)
@ CHECK: ('size', 8)
@ CHECK: ('offset', 324)
@ CHECK: ('alignment', 2)
@ CHECK: ('reloc_offset', 336)
@ CHECK: ('num_reloc', 3)
@ CHECK: ('flags', 0x80000400)
@ CHECK: ('reserved1', 0)
@ CHECK: ('reserved2', 0)
@ CHECK: ),
@ CHECK: ('_relocations', [
@ CHECK: # Relocation 0
@ CHECK: (('word-0', 0xa2000004),
@ CHECK: ('word-1', 0x8)),
@ CHECK: # Relocation 1
@ CHECK: (('word-0', 0xa1000000),
@ CHECK: ('word-1', 0x0)),
@ CHECK: # Relocation 2
@ CHECK: (('word-0', 0x0),
@ CHECK-FIXME: ('word-1', 0x6d000001)),
@ CHECK: ])
@ CHECK-FIXME: ('_section_data', 'fff7feef 04000000')
@ CHECK: # Section 1
@ CHECK: (('section_name', '__cstring\x00\x00\x00\x00\x00\x00\x00')
@ CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
@ CHECK: ('address', 8)
@ CHECK: ('size', 3)
@ CHECK: ('offset', 332)
@ CHECK: ('alignment', 2)
@ CHECK: ('reloc_offset', 0)
@ CHECK: ('num_reloc', 0)
@ CHECK: ('flags', 0x2)
@ CHECK: ('reserved1', 0)
@ CHECK: ('reserved2', 0)
@ CHECK: ),
@ CHECK: ('_relocations', [
@ CHECK: ])
@ CHECK: ('_section_data', '733000')
@ CHECK: ])
@ CHECK: ),
@ CHECK: # Load Command 1
@ CHECK: (('command', 2)
@ CHECK: ('size', 24)
@ CHECK: ('symoff', 360)
@ CHECK: ('nsyms', 2)
@ CHECK: ('stroff', 384)
@ CHECK: ('strsize', 16)
@ CHECK: ('_string_data', '\x00_main\x00_printf\x00\x00')
@ CHECK: ('_symbols', [
@ CHECK: # Symbol 0
@ CHECK: (('n_strx', 1)
@ CHECK: ('n_type', 0xf)
@ CHECK: ('n_sect', 1)
@ CHECK-FIXME: ('n_desc', 8)
@ CHECK: ('n_value', 0)
@ CHECK: ('_string', '_main')
@ CHECK: ),
@ CHECK: # Symbol 1
@ CHECK: (('n_strx', 7)
@ CHECK: ('n_type', 0x1)
@ CHECK: ('n_sect', 0)
@ CHECK: ('n_desc', 0)
@ CHECK: ('n_value', 0)
@ CHECK: ('_string', '_printf')
@ CHECK: ),
@ CHECK: ])
@ CHECK: ),
@ CHECK: # Load Command 2
@ CHECK: (('command', 11)
@ CHECK: ('size', 80)
@ CHECK: ('ilocalsym', 0)
@ CHECK: ('nlocalsym', 0)
@ CHECK: ('iextdefsym', 0)
@ CHECK: ('nextdefsym', 1)
@ CHECK: ('iundefsym', 1)
@ CHECK: ('nundefsym', 1)
@ 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: ('_indirect_symbols', [
@ CHECK: ])
@ CHECK: ),
@ CHECK: ])