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Fix bug when trying to output uint16_t or uint32_t.

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llvm-svn: 122615
This commit is contained in:
Rafael Espindola 2010-12-29 02:30:49 +00:00
parent d51ed1fc6a
commit 0408a378e9
2 changed files with 54 additions and 2 deletions
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11
lib/MC/MCDwarf.cpp
View File

@ -799,11 +799,18 @@ void MCDwarfFrameEmitter::EncodeAdvanceLoc(uint64_t AddrDelta,
OS << uint8_t(dwarf::DW_CFA_advance_loc1);
OS << uint8_t(AddrDelta);
} else if (isUInt<16>(AddrDelta)) {
// FIXME: check what is the correct behavior on a big endian machine.
OS << uint8_t(dwarf::DW_CFA_advance_loc2);
OS << uint16_t(AddrDelta);
OS << uint8_t( AddrDelta & 0xff);
OS << uint8_t((AddrDelta >> 8) & 0xff);
} else {
// FIXME: check what is the correct behavior on a big endian machine.
assert(isUInt<32>(AddrDelta));
OS << uint8_t(dwarf::DW_CFA_advance_loc4);
OS << uint32_t(AddrDelta);
OS << uint8_t( AddrDelta & 0xff);
OS << uint8_t((AddrDelta >> 8) & 0xff);
OS << uint8_t((AddrDelta >> 16) & 0xff);
OS << uint8_t((AddrDelta >> 24) & 0xff);
}
}

45
test/MC/ELF/cfi-advance-loc2.s Normal file
View File

@ -0,0 +1,45 @@
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump --dump-section-data | FileCheck %s
// test that this produces a correctly encoded cfi_advance_loc2
f:
.cfi_startproc
nop
.zero 255, 0x90
.cfi_def_cfa_offset 8
nop
.cfi_endproc
// CHECK: (('sh_name', 0x00000012) # '.eh_frame'
// CHECK-NEXT: ('sh_type', 0x00000001)
// CHECK-NEXT: ('sh_flags', 0x00000002)
// CHECK-NEXT: ('sh_addr', 0x00000000)
// CHECK-NEXT: ('sh_offset', 0x00000148)
// CHECK-NEXT: ('sh_size', 0x00000030)
// CHECK-NEXT: ('sh_link', 0x00000000)
// CHECK-NEXT: ('sh_info', 0x00000000)
// CHECK-NEXT: ('sh_addralign', 0x00000008)
// CHECK-NEXT: ('sh_entsize', 0x00000000)
// CHECK-NEXT: ('_section_data', '14000000 00000000 017a5200 01781001 1b0c0708 90010000 14000000 1c000000 00000000 01010000 00030001 0e080000')
// CHECK-NEXT: ),
// CHECK: (('sh_name', 0x00000036) # '.rela.eh_frame'
// CHECK-NEXT: ('sh_type', 0x00000004)
// CHECK-NEXT: ('sh_flags', 0x00000000)
// CHECK-NEXT: ('sh_addr', 0x00000000)
// CHECK-NEXT: ('sh_offset', 0x00000258)
// CHECK-NEXT: ('sh_size', 0x00000018)
// CHECK-NEXT: ('sh_link', 0x00000006)
// CHECK-NEXT: ('sh_info', 0x00000004)
// CHECK-NEXT: ('sh_addralign', 0x00000008)
// CHECK-NEXT: ('sh_entsize', 0x00000018)
// CHECK-NEXT: ('_relocations', [
// CHECK-NEXT: # Relocation 0x00000000
// CHECK-NEXT: (('r_offset', 0x00000020)
// CHECK-NEXT: ('r_sym', 0x00000002)
// CHECK-NEXT: ('r_type', 0x00000002)
// CHECK-NEXT: ('r_addend', 0x00000000)
// CHECK-NEXT: ),
// CHECK-NEXT: ])
// CHECK-NEXT: ),