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Added support for the Mach-O .symbol_resolver directive. rdar://8673046

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119816 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kevin Enderby 2010-11-19 18:39:33 +00:00
parent 0c2283a910
commit e8e98d7f2e
10 changed files with 52 additions and 24 deletions
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5
include/llvm/MC/MCAsmInfo.h
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@ -212,6 +212,10 @@ namespace llvm {
/// directive.
bool HasNoDeadStrip; // Defaults to false.
/// HasSymbolResolver - True if this target supports the MachO
/// .symbol_resolver directive.
bool HasSymbolResolver; // Defaults to false.
/// WeakRefDirective - This directive, if non-null, is used to declare a
/// global as being a weak undefined symbol.
const char *WeakRefDirective; // Defaults to NULL.
@ -395,6 +399,7 @@ namespace llvm {
}
bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; }
bool hasNoDeadStrip() const { return HasNoDeadStrip; }
bool hasSymbolResolver() const { return HasSymbolResolver; }
const char *getWeakRefDirective() const { return WeakRefDirective; }
const char *getWeakDefDirective() const { return WeakDefDirective; }
const char *getLinkOnceDirective() const { return LinkOnceDirective; }

1
include/llvm/MC/MCDirectives.h
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@ -34,6 +34,7 @@ enum MCSymbolAttr {
MCSA_LazyReference, ///< .lazy_reference (MachO)
MCSA_Local, ///< .local (ELF)
MCSA_NoDeadStrip, ///< .no_dead_strip (MachO)
MCSA_SymbolResolver, ///< .symbol_resolver (MachO)
MCSA_PrivateExtern, ///< .private_extern (MachO)
MCSA_Protected, ///< .protected (ELF)
MCSA_Reference, ///< .reference (MachO)

3
include/llvm/MC/MCMachOSymbolFlags.h
View File

@ -36,7 +36,8 @@ namespace llvm {
// Other 'desc' flags.
SF_NoDeadStrip = 0x0020,
SF_WeakReference = 0x0040,
SF_WeakDefinition = 0x0080
SF_WeakDefinition = 0x0080,
SF_SymbolResolver = 0x0100
};
} // end namespace llvm

1
lib/MC/MCAsmInfo.cpp
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@ -58,6 +58,7 @@ MCAsmInfo::MCAsmInfo() {
HasDotTypeDotSizeDirective = true;
HasSingleParameterDotFile = true;
HasNoDeadStrip = false;
HasSymbolResolver = false;
WeakRefDirective = 0;
WeakDefDirective = 0;
LinkOnceDirective = 0;

1
lib/MC/MCAsmInfoDarwin.cpp
View File

@ -44,6 +44,7 @@ MCAsmInfoDarwin::MCAsmInfoDarwin() {
HasDotTypeDotSizeDirective = false;
HasNoDeadStrip = true;
HasSymbolResolver = true;
DwarfUsesAbsoluteLabelForStmtList = false;
DwarfUsesLabelOffsetForRanges = false;

1
lib/MC/MCAsmStreamer.cpp
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@ -326,6 +326,7 @@ void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
case MCSA_LazyReference: OS << "\t.lazy_reference\t"; break;
case MCSA_Local: OS << "\t.local\t"; break;
case MCSA_NoDeadStrip: OS << "\t.no_dead_strip\t"; break;
case MCSA_SymbolResolver: OS << "\t.symbol_resolver\t"; break;
case MCSA_PrivateExtern: OS << "\t.private_extern\t"; break;
case MCSA_Protected: OS << "\t.protected\t"; break;
case MCSA_Reference: OS << "\t.reference\t"; break;

1
lib/MC/MCELFStreamer.cpp
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@ -281,6 +281,7 @@ void MCELFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
case MCSA_LazyReference:
case MCSA_Reference:
case MCSA_NoDeadStrip:
case MCSA_SymbolResolver:
case MCSA_PrivateExtern:
case MCSA_WeakDefinition:
case MCSA_WeakDefAutoPrivate:

4
lib/MC/MCMachOStreamer.cpp
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@ -235,6 +235,10 @@ void MCMachOStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
SD.setFlags(SD.getFlags() | SF_NoDeadStrip);
break;
case MCSA_SymbolResolver:
SD.setFlags(SD.getFlags() | SF_SymbolResolver);
break;
case MCSA_PrivateExtern:
SD.setExternal(true);
SD.setPrivateExtern(true);

2
lib/MC/MCParser/AsmParser.cpp
View File

@ -1012,6 +1012,8 @@ bool AsmParser::ParseStatement() {
return ParseDirectiveSymbolAttribute(MCSA_LazyReference);
if (IDVal == ".no_dead_strip")
return ParseDirectiveSymbolAttribute(MCSA_NoDeadStrip);
if (IDVal == ".symbol_resolver")
return ParseDirectiveSymbolAttribute(MCSA_SymbolResolver);
if (IDVal == ".private_extern")
return ParseDirectiveSymbolAttribute(MCSA_PrivateExtern);
if (IDVal == ".protected")

57
test/MC/MachO/symbol-flags.s
View File

@ -49,6 +49,9 @@ sym_private_ext_C:
.no_dead_strip sym_no_dead_strip_A
sym_symbol_resolver_A:
.symbol_resolver sym_symbol_resolver_A
.reference sym_ref_A
.desc sym_ref_A, 1
.desc sym_ref_A, 0x1234
@ -112,10 +115,10 @@ sym_desc_flags:
// CHECK: (('command', 2)
// CHECK: ('size', 24)
// CHECK: ('symoff', 324)
// CHECK: ('nsyms', 23)
// CHECK: ('stroff', 600)
// CHECK: ('strsize', 368)
// CHECK: ('_string_data', '\x00sym_ref_A\x00sym_ref_def_D\x00sym_ref_def_E\x00sym_weak_ref_A\x00sym_weak_def_A\x00sym_weak_def_B\x00sym_weak_def_C\x00sym_lazy_ref_A\x00sym_lazy_ref_D\x00sym_lazy_ref_E\x00sym_private_ext_A\x00sym_private_ext_B\x00sym_private_ext_C\x00sym_private_ext_D\x00sym_private_ext_E\x00sym_no_dead_strip_A\x00sym_ref_def_A\x00sym_ref_def_C\x00sym_weak_ref_def_A\x00sym_weak_ref_def_B\x00sym_lazy_ref_B\x00sym_lazy_ref_C\x00sym_desc_flags\x00\x00\x00\x00')
// CHECK: ('nsyms', 24)
// CHECK: ('stroff', 612)
// CHECK: ('strsize', 388)
// CHECK: ('_string_data', '\x00sym_ref_A\x00sym_ref_def_D\x00sym_ref_def_E\x00sym_weak_ref_A\x00sym_weak_def_A\x00sym_weak_def_B\x00sym_weak_def_C\x00sym_lazy_ref_A\x00sym_lazy_ref_D\x00sym_lazy_ref_E\x00sym_private_ext_A\x00sym_private_ext_B\x00sym_private_ext_C\x00sym_private_ext_D\x00sym_private_ext_E\x00sym_no_dead_strip_A\x00sym_ref_def_A\x00sym_ref_def_C\x00sym_weak_ref_def_A\x00sym_weak_ref_def_B\x00sym_lazy_ref_B\x00sym_lazy_ref_C\x00sym_symbol_resolver_A\x00sym_desc_flags\x00\x00')
// CHECK: ('_symbols', [
// CHECK: # Symbol 0
// CHECK: (('n_strx', 254)
@ -169,11 +172,19 @@ sym_desc_flags:
// CHECK: (('n_strx', 350)
// CHECK: ('n_type', 0xe)
// CHECK: ('n_sect', 2)
// CHECK: ('n_desc', 256)
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_symbol_resolver_A')
// CHECK: ),
// CHECK: # Symbol 7
// CHECK: (('n_strx', 372)
// CHECK: ('n_type', 0xe)
// CHECK: ('n_sect', 2)
// CHECK: ('n_desc', 64)
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_desc_flags')
// CHECK: ),
// CHECK: # Symbol 7
// CHECK: # Symbol 8
// CHECK: (('n_strx', 162)
// CHECK: ('n_type', 0x1f)
// CHECK: ('n_sect', 2)
@ -181,7 +192,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_private_ext_B')
// CHECK: ),
// CHECK: # Symbol 8
// CHECK: # Symbol 9
// CHECK: (('n_strx', 180)
// CHECK: ('n_type', 0x1f)
// CHECK: ('n_sect', 2)
@ -189,7 +200,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_private_ext_C')
// CHECK: ),
// CHECK: # Symbol 9
// CHECK: # Symbol 10
// CHECK: (('n_strx', 54)
// CHECK: ('n_type', 0xf)
// CHECK: ('n_sect', 2)
@ -197,7 +208,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_weak_def_A')
// CHECK: ),
// CHECK: # Symbol 10
// CHECK: # Symbol 11
// CHECK: (('n_strx', 69)
// CHECK: ('n_type', 0xf)
// CHECK: ('n_sect', 2)
@ -205,7 +216,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_weak_def_B')
// CHECK: ),
// CHECK: # Symbol 11
// CHECK: # Symbol 12
// CHECK: (('n_strx', 84)
// CHECK: ('n_type', 0xf)
// CHECK: ('n_sect', 2)
@ -213,7 +224,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_weak_def_C')
// CHECK: ),
// CHECK: # Symbol 12
// CHECK: # Symbol 13
// CHECK: (('n_strx', 99)
// CHECK: ('n_type', 0x1)
// CHECK: ('n_sect', 0)
@ -221,7 +232,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_lazy_ref_A')
// CHECK: ),
// CHECK: # Symbol 13
// CHECK: # Symbol 14
// CHECK: (('n_strx', 114)
// CHECK: ('n_type', 0x1)
// CHECK: ('n_sect', 0)
@ -229,7 +240,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_lazy_ref_D')
// CHECK: ),
// CHECK: # Symbol 14
// CHECK: # Symbol 15
// CHECK: (('n_strx', 129)
// CHECK: ('n_type', 0x1)
// CHECK: ('n_sect', 0)
@ -237,7 +248,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_lazy_ref_E')
// CHECK: ),
// CHECK: # Symbol 15
// CHECK: # Symbol 16
// CHECK: (('n_strx', 234)
// CHECK: ('n_type', 0x1)
// CHECK: ('n_sect', 0)
@ -245,7 +256,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_no_dead_strip_A')
// CHECK: ),
// CHECK: # Symbol 16
// CHECK: # Symbol 17
// CHECK: (('n_strx', 144)
// CHECK: ('n_type', 0x11)
// CHECK: ('n_sect', 0)
@ -253,7 +264,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_private_ext_A')
// CHECK: ),
// CHECK: # Symbol 17
// CHECK: # Symbol 18
// CHECK: (('n_strx', 198)
// CHECK: ('n_type', 0x11)
// CHECK: ('n_sect', 0)
@ -261,7 +272,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_private_ext_D')
// CHECK: ),
// CHECK: # Symbol 18
// CHECK: # Symbol 19
// CHECK: (('n_strx', 216)
// CHECK: ('n_type', 0x11)
// CHECK: ('n_sect', 0)
@ -269,7 +280,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_private_ext_E')
// CHECK: ),
// CHECK: # Symbol 19
// CHECK: # Symbol 20
// CHECK: (('n_strx', 1)
// CHECK: ('n_type', 0x1)
// CHECK: ('n_sect', 0)
@ -277,7 +288,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_ref_A')
// CHECK: ),
// CHECK: # Symbol 20
// CHECK: # Symbol 21
// CHECK: (('n_strx', 11)
// CHECK: ('n_type', 0x1)
// CHECK: ('n_sect', 0)
@ -285,7 +296,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_ref_def_D')
// CHECK: ),
// CHECK: # Symbol 21
// CHECK: # Symbol 22
// CHECK: (('n_strx', 25)
// CHECK: ('n_type', 0x1)
// CHECK: ('n_sect', 0)
@ -293,7 +304,7 @@ sym_desc_flags:
// CHECK: ('n_value', 0)
// CHECK: ('_string', 'sym_ref_def_E')
// CHECK: ),
// CHECK: # Symbol 22
// CHECK: # Symbol 23
// CHECK: (('n_strx', 39)
// CHECK: ('n_type', 0x1)
// CHECK: ('n_sect', 0)
@ -307,10 +318,10 @@ sym_desc_flags:
// CHECK: (('command', 11)
// CHECK: ('size', 80)
// CHECK: ('ilocalsym', 0)
// CHECK: ('nlocalsym', 7)
// CHECK: ('iextdefsym', 7)
// CHECK: ('nlocalsym', 8)
// CHECK: ('iextdefsym', 8)
// CHECK: ('nextdefsym', 5)
// CHECK: ('iundefsym', 12)
// CHECK: ('iundefsym', 13)
// CHECK: ('nundefsym', 11)
// CHECK: ('tocoff', 0)
// CHECK: ('ntoc', 0)