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Add unit tests for overlapping functions and externs.

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R=mark@chromium.org

Review URL: https://breakpad.appspot.com/3774002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1424 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
thestig@chromium.org 2015-02-04 00:03:58 +00:00
parent 89947e7d86
commit c63cf36a13
1 changed files with 68 additions and 0 deletions
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68
src/common/module_unittest.cc
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@ -476,3 +476,71 @@ TEST(Construct, DuplicateExterns) {
"PUBLIC ffff 0 _xyz\n", "PUBLIC ffff 0 _xyz\n",
contents.c_str()); contents.c_str());
} }
// If there exists an extern and a function at the same address, only write
// out the FUNC entry.
TEST(Construct, FunctionsAndExternsWithSameAddress) {
stringstream s;
Module m(MODULE_NAME, MODULE_OS, MODULE_ARCH, MODULE_ID);
// Two externs.
Module::Extern* extern1 = new Module::Extern(0xabc0);
extern1->name = "abc";
Module::Extern* extern2 = new Module::Extern(0xfff0);
extern2->name = "xyz";
m.AddExtern(extern1);
m.AddExtern(extern2);
Module::Function* function = new Module::Function("_xyz", 0xfff0);
function->size = 0x10;
function->parameter_size = 0;
m.AddFunction(function);
m.Write(s, ALL_SYMBOL_DATA);
string contents = s.str();
EXPECT_STREQ("MODULE " MODULE_OS " " MODULE_ARCH " "
MODULE_ID " " MODULE_NAME "\n"
"FUNC fff0 10 0 _xyz\n"
"PUBLIC abc0 0 abc\n",
contents.c_str());
}
// If there exists an extern and a function at the same address, only write
// out the FUNC entry. For ARM THUMB, the extern that comes from the ELF
// symbol section has bit 0 set.
TEST(Construct, FunctionsAndThumbExternsWithSameAddress) {
stringstream s;
Module m(MODULE_NAME, MODULE_OS, "arm", MODULE_ID);
// Two THUMB externs.
Module::Extern* thumb_extern1 = new Module::Extern(0xabc1);
thumb_extern1->name = "thumb_abc";
Module::Extern* thumb_extern2 = new Module::Extern(0xfff1);
thumb_extern2->name = "thumb_xyz";
Module::Extern* arm_extern1 = new Module::Extern(0xcc00);
arm_extern1->name = "arm_func";
m.AddExtern(thumb_extern1);
m.AddExtern(thumb_extern2);
m.AddExtern(arm_extern1);
// The corresponding function from the DWARF debug data have the actual
// address.
Module::Function* function = new Module::Function("_thumb_xyz", 0xfff0);
function->size = 0x10;
function->parameter_size = 0;
m.AddFunction(function);
m.Write(s, ALL_SYMBOL_DATA);
string contents = s.str();
EXPECT_STREQ("MODULE " MODULE_OS " arm "
MODULE_ID " " MODULE_NAME "\n"
"FUNC fff0 10 0 _thumb_xyz\n"
"PUBLIC abc1 0 thumb_abc\n"
"PUBLIC cc00 0 arm_func\n",
contents.c_str());
}