This revision was automatically updated to reflect the committed changes.
Closed by commit rL331173: ObjectFileELF: Add support for arbitrarily named
code sections (authored by labath, committed by ).
Herald added a subscriber: JDevlieghere.
Changed prior to commit:
https://reviews.llvm.org/D44998?vs=140628&id=144547#toc
Repository:
rL LLVM
https://reviews.llvm.org/D44998
Files:
lldb/trunk/lit/Modules/dwarf-gnu-debugaltlink.yaml
lldb/trunk/lit/Modules/elf-section-types.yaml
lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/Makefile
lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/TestBreakpointThumbCodesection.py
lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/main.c
lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
Index: lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
===================================================================
--- lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ lldb/trunk/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -1950,6 +1950,16 @@
sect_type = kalimbaSectionType(m_header, header);
}
+ // In common case ELF code section can have arbitrary name (for example,
+ // we can specify it using section attribute for particular function) so
+ // assume that section is a code section if it has SHF_EXECINSTR flag set
+ // and has SHT_PROGBITS type.
+ if (eSectionTypeOther == sect_type &&
+ llvm::ELF::SHT_PROGBITS == header.sh_type &&
+ (header.sh_flags & SHF_EXECINSTR)) {
+ sect_type = eSectionTypeCode;
+ }
+
const uint32_t target_bytes_size =
(eSectionTypeData == sect_type || eSectionTypeZeroFill == sect_type)
? m_arch_spec.GetDataByteSize()
Index: lldb/trunk/lit/Modules/elf-section-types.yaml
===================================================================
--- lldb/trunk/lit/Modules/elf-section-types.yaml
+++ lldb/trunk/lit/Modules/elf-section-types.yaml
@@ -0,0 +1,39 @@
+# RUN: yaml2obj %s > %t
+# RUN: lldb-test module-sections %t | FileCheck %s
+
+# CHECK: Name: .text
+# CHECK-NEXT: Type: code
+
+# CHECK: Name: .gnu_debugaltlink
+# CHECK-NEXT: Type: dwarf-gnu-debugaltlink
+# CHECK-NEXT: VM size: 0
+# CHECK-NEXT: File size: 8
+
+# CHECK: Name: __codesection
+# CHECK-NEXT: Type: code
+
+--- !ELF
+FileHeader:
+ Class: ELFCLASS64
+ Data: ELFDATA2LSB
+ Type: ET_DYN
+ Machine: EM_X86_64
+ Entry: 0x00000000000007A0
+Sections:
+ - Name: .text
+ Type: SHT_PROGBITS
+ Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
+ Content: DEADBEEFBAADF00D
+ - Name: .debug_info
+ Type: SHT_PROGBITS
+ AddressAlign: 0x0000000000000001
+ Content: DEADBEEFBAADF00D
+ - Name: .gnu_debugaltlink
+ Type: SHT_PROGBITS
+ AddressAlign: 0x0000000000000001
+ Content: DEADBEEFBAADF00D
+ - Name: __codesection
+ Type: SHT_PROGBITS
+ Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
+ Content: DEADBEEFBAADF00D
+...
Index: lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/main.c
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/main.c
+++ lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/main.c
@@ -0,0 +1,8 @@
+__attribute__((section("__codesection")))
+int f(int a) {
+ return a + 1; // Set break point at this line.
+}
+
+int main() {
+ return f(10);
+}
Index: lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/TestBreakpointThumbCodesection.py
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/TestBreakpointThumbCodesection.py
+++ lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/TestBreakpointThumbCodesection.py
@@ -0,0 +1,35 @@
+"""
+Test that breakpoints correctly work in an thumb function in an arbitrary
+named codesection.
+"""
+from __future__ import print_function
+
+
+import lldb
+import os
+import time
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class TestBreakpointThumbCodesection(TestBase):
+
+ mydir = TestBase.compute_mydir(__file__)
+
+ @skipIf(archs=no_match(["arm"]))
+ def test_breakpoint(self):
+ self.build()
+ exe = self.getBuildArtifact("a.out")
+ line = line_number('main.c', '// Set break point at this line.')
+
+ self.runCmd("target create %s" % exe)
+ bpid = lldbutil.run_break_set_by_file_and_line(self, "main.c", line)
+
+ self.runCmd("run")
+
+ self.assertIsNotNone(lldbutil.get_one_thread_stopped_at_breakpoint_id(
+ self.process(), bpid), "Process is not stopped at breakpoint")
+
+ self.process().Continue()
+ self.assertEqual(self.process().GetState(), lldb.eStateExited, PROCESS_EXITED)
Index: lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/Makefile
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/Makefile
+++ lldb/trunk/packages/Python/lldbsuite/test/arm/breakpoint-thumb-codesection/Makefile
@@ -0,0 +1,6 @@
+LEVEL = ../../make
+
+C_SOURCES := main.c
+CFLAGS_EXTRAS = -mthumb
+
+include $(LEVEL)/Makefile.rules
\ No newline at end of file
Index: lldb/trunk/lit/Modules/dwarf-gnu-debugaltlink.yaml
===================================================================
--- lldb/trunk/lit/Modules/dwarf-gnu-debugaltlink.yaml
+++ lldb/trunk/lit/Modules/dwarf-gnu-debugaltlink.yaml
@@ -1,25 +0,0 @@
-# RUN: yaml2obj %s > %t
-# RUN: lldb-test module-sections %t | FileCheck %s
-
-# CHECK: Name: .gnu_debugaltlink
-# CHECK-NEXT: Type: dwarf-gnu-debugaltlink
-# CHECK-NEXT: VM size: 0
-# CHECK-NEXT: File size: 8
-
---- !ELF
-FileHeader:
- Class: ELFCLASS64
- Data: ELFDATA2LSB
- Type: ET_DYN
- Machine: EM_X86_64
- Entry: 0x00000000000007A0
-Sections:
- - Name: .debug_info
- Type: SHT_PROGBITS
- AddressAlign: 0x0000000000000001
- Content: DEADBEEFBAADF00D
- - Name: .gnu_debugaltlink
- Type: SHT_PROGBITS
- AddressAlign: 0x0000000000000001
- Content: DEADBEEFBAADF00D
-...
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