<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 7, 2015 at 9:00 PM, Sean Silva <span dir="ltr"><<a href="mailto:chisophugis@gmail.com" target="_blank">chisophugis@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Nice!<div><br></div><div>But I thought that an MCSymbolizer would automatically get us this too? (along with symbolizing e.g. addresses of constants which the current commit won't do)</div></div></blockquote><div><br></div><div>I'm not sure, I didn't think that machinery knows about expressions involving symbols in object files but patches are always welcome.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><span class="HOEnZb"><font color="#888888"><div><br></div><div>-- Sean Silva</div></font></span></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jul 7, 2015 at 3:06 PM, David Majnemer <span dir="ltr"><<a href="mailto:david.majnemer@gmail.com" target="_blank">david.majnemer@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: majnemer<br>
Date: Tue Jul 7 17:06:59 2015<br>
New Revision: 241631<br>
<br>
URL: <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__llvm.org_viewvc_llvm-2Dproject-3Frev-3D241631-26view-3Drev&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=mQ4LZ2PUj9hpadE3cDHZnIdEwhEBrbAstXeMaFoB9tg&m=eeSH7HzWYbfRsfXgy_7EOCGfkyEMtycNUCA_4ROeNfI&s=KiRa_XpwuOrEoLv8tuMPFmKKRpFwG53GjyblJSTbQSI&e=" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project?rev=241631&view=rev</a><br>
Log:<br>
[llvm-objdump] Print the call target next to the instruction<br>
<br>
GNU binutils provides this behavior. objdump -r doesn't really help<br>
when you aren't dealing with relocation object files.<br>
<br>
Modified:<br>
llvm/trunk/test/MC/X86/AlignedBundling/nesting.s<br>
llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp<br>
<br>
Modified: llvm/trunk/test/MC/X86/AlignedBundling/nesting.s<br>
URL: <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__llvm.org_viewvc_llvm-2Dproject_llvm_trunk_test_MC_X86_AlignedBundling_nesting.s-3Frev-3D241631-26r1-3D241630-26r2-3D241631-26view-3Ddiff&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=mQ4LZ2PUj9hpadE3cDHZnIdEwhEBrbAstXeMaFoB9tg&m=eeSH7HzWYbfRsfXgy_7EOCGfkyEMtycNUCA_4ROeNfI&s=XPRk-1e7x2ytBtwWPuBv6K8c-X8cqAPf6JK6wKqSgUI&e=" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/X86/AlignedBundling/nesting.s?rev=241631&r1=241630&r2=241631&view=diff</a><br>
==============================================================================<br>
--- llvm/trunk/test/MC/X86/AlignedBundling/nesting.s (original)<br>
+++ llvm/trunk/test/MC/X86/AlignedBundling/nesting.s Tue Jul 7 17:06:59 2015<br>
@@ -6,7 +6,7 @@<br>
# Will be bundle-aligning to 16 byte boundaries<br>
.bundle_align_mode 4<br>
.text<br>
-# CHECK-LABEL: foo<br>
+# CHECK-LABEL: foo:<br>
foo:<br>
# Test that bundle alignment mode can be set more than once.<br>
.bundle_align_mode 4<br>
@@ -19,11 +19,11 @@ foo:<br>
callq bar<br>
.bundle_unlock<br>
.bundle_unlock<br>
-# CHECK: 10: callq<br>
-# CHECK-NEXT: 15: callq<br>
+# CHECK: 10: callq {{.*}} <bar><br>
+# CHECK-NEXT: 15: callq {{.*}} <bar><br>
<br>
.p2align 4<br>
-# CHECK-LABEL: bar<br>
+# CHECK-LABEL: bar:<br>
bar:<br>
callq foo<br>
callq foo<br>
@@ -35,10 +35,10 @@ bar:<br>
callq bar<br>
.bundle_unlock<br>
.bundle_unlock<br>
-# CHECK: 36: callq<br>
-# CHECK-NEXT: 3b: callq<br>
+# CHECK: 36: callq {{.*}} <bar><br>
+# CHECK-NEXT: 3b: callq {{.*}} <bar><br>
<br>
-# CHECK-LABEL: baz<br>
+# CHECK-LABEL: baz:<br>
baz:<br>
callq foo<br>
callq foo<br>
@@ -50,8 +50,8 @@ baz:<br>
callq bar<br>
.bundle_unlock<br>
.bundle_unlock<br>
-# CHECK: 56: callq<br>
-# CHECK-NEXT: 5b: callq<br>
+# CHECK: 56: callq {{.*}} <bar><br>
+# CHECK-NEXT: 5b: callq {{.*}} <bar><br>
<br>
# CHECK-LABEL: quux<br>
quux:<br>
@@ -65,5 +65,5 @@ quux:<br>
.bundle_unlock<br>
# Check that the calls are bundled together when the second one is after the<br>
# inner nest is closed.<br>
-# CHECK: 70: callq<br>
-# CHECK-NEXT: 75: callq<br>
+# CHECK: 70: callq {{.*}} <bar><br>
+# CHECK-NEXT: 75: callq {{.*}} <bar><br>
<br>
Modified: llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp<br>
URL: <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__llvm.org_viewvc_llvm-2Dproject_llvm_trunk_tools_llvm-2Dobjdump_llvm-2Dobjdump.cpp-3Frev-3D241631-26r1-3D241630-26r2-3D241631-26view-3Ddiff&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=mQ4LZ2PUj9hpadE3cDHZnIdEwhEBrbAstXeMaFoB9tg&m=eeSH7HzWYbfRsfXgy_7EOCGfkyEMtycNUCA_4ROeNfI&s=3nXfksLozWM41GCgghLUEIXV3tMNySnwLEXrZEFDPRY&e=" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp?rev=241631&r1=241630&r2=241631&view=diff</a><br>
==============================================================================<br>
--- llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp (original)<br>
+++ llvm/trunk/tools/llvm-objdump/llvm-objdump.cpp Tue Jul 7 17:06:59 2015<br>
@@ -808,6 +808,27 @@ static void DisassembleObject(const Obje<br>
SectionRelocMap[*Sec2].push_back(Section);<br>
}<br>
<br>
+ // Create a mapping from virtual address to symbol name. This is used to<br>
+ // pretty print the target of a call.<br>
+ std::vector<std::pair<uint64_t, StringRef>> AllSymbols;<br>
+ if (MIA) {<br>
+ for (const SymbolRef &Symbol : Obj->symbols()) {<br>
+ ErrorOr<uint64_t> AddressOrErr = Symbol.getAddress();<br>
+ if (error(AddressOrErr.getError()))<br>
+ break;<br>
+ uint64_t Address = *AddressOrErr;<br>
+<br>
+ ErrorOr<StringRef> Name = Symbol.getName();<br>
+ if (error(Name.getError()))<br>
+ break;<br>
+ if (Name->empty())<br>
+ continue;<br>
+ AllSymbols.push_back(std::make_pair(Address, *Name));<br>
+ }<br>
+<br>
+ array_pod_sort(AllSymbols.begin(), AllSymbols.end());<br>
+ }<br>
+<br>
for (const SectionRef &Section : Obj->sections()) {<br>
if (!Section.isText() || Section.isVirtual())<br>
continue;<br>
@@ -912,6 +933,21 @@ static void DisassembleObject(const Obje<br>
SectionAddr + Index, outs(), "", *STI);<br>
outs() << CommentStream.str();<br>
Comments.clear();<br>
+ if (MIA && (MIA->isCall(Inst) || MIA->isUnconditionalBranch(Inst))) {<br>
+ uint64_t Target;<br>
+ if (MIA->evaluateBranch(Inst, SectionAddr + Index, Size, Target)) {<br>
+ const auto &TargetSym =<br>
+ std::lower_bound(AllSymbols.begin(), AllSymbols.end(),<br>
+ std::make_pair(Target, StringRef()));<br>
+ if (TargetSym != AllSymbols.end()) {<br>
+ outs() << " <" << TargetSym->second;<br>
+ uint64_t Disp = TargetSym->first - Target;<br>
+ if (Disp)<br>
+ outs() << '-' << Disp;<br>
+ outs() << '>';<br>
+ }<br>
+ }<br>
+ }<br>
outs() << "\n";<br>
} else {<br>
errs() << ToolName << ": warning: invalid instruction encoding\n";<br>
<br>
<br>
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</blockquote></div><br></div>
</div></div></blockquote></div><br></div></div>