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Read an expression in the form of "ABSOLUTE(<expr>) op <expr> ...". 

Fixes bug 30741.

llvm-svn: 284662
This commit is contained in:
Rui Ueyama 2016-10-19 23:11:21 +00:00
parent 98508a8344
commit 7c1381a099
2 changed files with 21 additions and 1 deletions
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4
lld/ELF/LinkerScript.cpp
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@ -1432,7 +1432,9 @@ SymbolAssignment *ScriptParser::readAssignment(StringRef Name) {
Expr E;
assert(Op == "=" || Op == "+=");
if (consume("ABSOLUTE")) {
E = readParenExpr();
// The RHS may be something like "ABSOLUTE(.) & 0xff".
// Call readExpr1 to read the whole expression.
E = readExpr1(readParenExpr(), 0);
IsAbsolute = true;
} else {
E = readExpr();

18
lld/test/ELF/linkerscript/absolute.s Normal file
View File

@ -0,0 +1,18 @@
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t.o
# RUN: echo "SECTIONS { foo = ABSOLUTE(.) + 1; };" > %t.script
# RUN: ld.lld -o %t --script %t.script %t.o
# RUN: llvm-readobj --symbols %t | FileCheck %s
# CHECK: Name: foo
# CHECK-NEXT: Value:
# CHECK-NEXT: Size:
# CHECK-NEXT: Binding:
# CHECK-NEXT: Type:
# CHECK-NEXT: Other:
# CHECK-NEXT: Section: Absolute
# CHECK-NEXT: }
.text
.globl _start
_start: