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Set the value of absolute symbols.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122268 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Roman Divacky 2010-12-20 21:14:39 +00:00
parent d7a0852464
commit d149186e15
2 changed files with 23 additions and 1 deletions
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9
lib/MC/ELFObjectWriter.cpp
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@ -518,6 +518,15 @@ static uint64_t SymbolValue(MCSymbolData &Data, const MCAsmLayout &Layout) {
return Data.getCommonAlignment();
const MCSymbol &Symbol = Data.getSymbol();
if (Symbol.isAbsolute() && Symbol.isVariable()) {
if (const MCExpr *Value = Symbol.getVariableValue()) {
int64_t IntValue;
if (Value->EvaluateAsAbsolute(IntValue, Layout))
return (uint64_t)IntValue;
}
}
if (!Symbol.isInSection())
return 0;

15
test/MC/ELF/set.s
View File

@ -1,5 +1,18 @@
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | elf-dump --dump-section-data | FileCheck %s
// Test that we emit the correct value.
.set kernbase,0xffffffff80000000
// CHECK: (('st_name', 0x00000001) # 'kernbase'
// CHECK-NEXT: ('st_bind', 0x00000000)
// CHECK-NEXT: ('st_type', 0x00000000)
// CHECK-NEXT: ('st_other', 0x00000000)
// CHECK-NEXT: ('st_shndx', 0x0000fff1)
// CHECK-NEXT: ('st_value', 0xffffffff80000000)
// CHECK-NEXT: ('st_size', 0x0000000000000000)
// CHECK-NEXT: ),
// Test that we accept .set of a symbol after it has been used in a statement.
jmp foo
@ -11,7 +24,7 @@
.set foo2,bar2
// Test that there is an undefined reference to bar
// CHECK: (('st_name', 0x00000001) # 'bar'
// CHECK: (('st_name', 0x0000000a) # 'bar'
// CHECK-NEXT: ('st_bind', 0x00000001)
// CHECK-NEXT: ('st_type', 0x00000000)
// CHECK-NEXT: ('st_other', 0x00000000)