llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-risc-v
Author: Jason Molenda (jasonmolenda)
<details>
<summary>Changes</summary>
I've wanted a utility to create a corefile for test purposes given a bit of
memory and regsters, for a while. I've written a few API tests over the years
that needed exactly this capability -- we have several one-off Mach-O corefile
creator utility in the API testsuite to do this. But it's a lot of boilerplate
when you only want to specify some register contents and memory contents, to
create an API test.
This adds yaml2mach-core, a tool that should build on any system, takes a yaml
description of register values for one or more threads, optionally memory
values for one or more memory regions, and can take a list of UUIDs that will
be added as LC_NOTE "load binary" metadata to the corefile so binaries can be
loaded into virtual address space in a test scenario.
The format of the yaml file looks like
cpu: armv7m
endian: little
threads:
- regsets: - flavor: gpr registers: [{name: sp, value: 0x2000fe70}, {name:
r7, value: 0x2000fe80}, {name: pc, value: 0x0020392c}, {name: lr, value:
0x0020392d}]
memory-regions:
- addr: 0x2000fe70 UInt32: [ 0x0000002a, 0x20010e58, 0x00203923, 0x00000001,
0x2000fe88, 0x00203911, 0x2000ffdc, 0xfffffff9 ]
- addr: 0x203910 UInt8: [ 0xf8, 0xb5, 0x04, 0xaf, 0x06, 0x4c, 0x07, 0x49,
0x74, 0xf0, 0x2e, 0xf8, 0x01, 0xac, 0x74, 0xf0 ]
and that's all that is needed to specify a corefile where four register values
are specified (the others will be set to 0), and two memory regions will be
emitted.
The memory can be specified as an array of UInt8, UInt32, or UInt64, I
anticipate that some of these corefiles may have stack values constructed
manually and it may be simpler for a human to write them in a particular
grouping of values.
Accepting "endian" is probably a boondoggle that won't ever come to any use,
and honestly I don't 100% know what the correct byte layout would be for a big
endian Mach-O file any more. In a RISC-V discussion a month ago, it was noted
that register byte layout will be little endian even when there is a big endian
defined format for RV, so memory would be byteswapped but registers would not.
It may have been better not to pretend to support this, but on the other hand
it might be neat to be able to generate a big endian test case simply.
I needed this utility for an upcoming patch for ARM Cortex-M processors, to
create a test for the change. I took the opportunity to remove two of the
"trivial mach-o corefile" creator utilities I've written in the past, which
also restricted the tests to only run on Darwin systems because I was using the
system headers for Mach-O constant values.
rdar://110663219
---
Patch is 64.83 KiB, truncated to 20.00 KiB below, full version:
https://github.com/llvm/llvm-project/pull/153911.diff
28 Files Affected:
- (modified) lldb/packages/Python/lldbsuite/test/configuration.py (+10)
- (modified) lldb/packages/Python/lldbsuite/test/dotest.py (+1)
- (modified) lldb/packages/Python/lldbsuite/test/lldbtest.py (+15)
- (modified) lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.cpp (+36)
- (modified) lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.h (+3)
- (removed) lldb/test/API/macosx/arm-corefile-regctx/Makefile (-6)
- (modified)
lldb/test/API/macosx/arm-corefile-regctx/TestArmMachoCorefileRegctx.py (+6-11)
- (added) lldb/test/API/macosx/arm-corefile-regctx/arm64.yaml (+31)
- (added) lldb/test/API/macosx/arm-corefile-regctx/armv7m.yaml (+37)
- (removed) lldb/test/API/macosx/arm-corefile-regctx/create-arm-corefiles.cpp
(-266)
- (removed) lldb/test/API/macosx/riscv32-corefile/Makefile (-7)
- (modified) lldb/test/API/macosx/riscv32-corefile/TestRV32MachOCorefile.py
(+13-5)
- (removed)
lldb/test/API/macosx/riscv32-corefile/create-empty-riscv-corefile.cpp (-116)
- (added) lldb/test/API/macosx/riscv32-corefile/riscv32-registers.yaml (+47)
- (modified) lldb/tools/CMakeLists.txt (+2)
- (added) lldb/tools/yaml2macho-core/CMakeLists.txt (+13)
- (added) lldb/tools/yaml2macho-core/CoreSpec.h (+56)
- (added) lldb/tools/yaml2macho-core/LCNoteWriter.cpp (+68)
- (added) lldb/tools/yaml2macho-core/LCNoteWriter.h (+23)
- (added) lldb/tools/yaml2macho-core/MemoryWriter.cpp (+57)
- (added) lldb/tools/yaml2macho-core/MemoryWriter.h (+22)
- (added) lldb/tools/yaml2macho-core/ThreadWriter.cpp (+190)
- (added) lldb/tools/yaml2macho-core/ThreadWriter.h (+19)
- (added) lldb/tools/yaml2macho-core/Utility.cpp (+57)
- (added) lldb/tools/yaml2macho-core/Utility.h (+23)
- (added) lldb/tools/yaml2macho-core/main.cpp (+223)
- (added) lldb/tools/yaml2macho-core/yaml2corespec.cpp (+131)
- (added) lldb/tools/yaml2macho-core/yaml2corespec.h (+16)
``````````diff
diff --git a/lldb/packages/Python/lldbsuite/test/configuration.py
b/lldb/packages/Python/lldbsuite/test/configuration.py
index 5e3810992d172..1a9f25d66843a 100644
--- a/lldb/packages/Python/lldbsuite/test/configuration.py
+++ b/lldb/packages/Python/lldbsuite/test/configuration.py
@@ -64,6 +64,9 @@
# Path to the yaml2obj tool. Not optional.
yaml2obj = None
+# Path to the yaml2macho-core tool. Not optional.
+yaml2macho_core = None
+
# The arch might dictate some specific CFLAGS to be passed to the toolchain to
build
# the inferior programs. The global variable cflags_extras provides a hook to
do
# just that.
@@ -174,3 +177,10 @@ def get_yaml2obj_path():
"""
if yaml2obj and os.path.lexists(yaml2obj):
return yaml2obj
+
+def get_yaml2macho_core_path():
+ """
+ Get the path to the yaml2macho-core tool.
+ """
+ if yaml2macho_core and os.path.lexists(yaml2macho_core):
+ return yaml2macho_core
diff --git a/lldb/packages/Python/lldbsuite/test/dotest.py
b/lldb/packages/Python/lldbsuite/test/dotest.py
index 47a3c2ed2fc9d..89b6807b41075 100644
--- a/lldb/packages/Python/lldbsuite/test/dotest.py
+++ b/lldb/packages/Python/lldbsuite/test/dotest.py
@@ -280,6 +280,7 @@ def parseOptionsAndInitTestdirs():
configuration.llvm_tools_dir = args.llvm_tools_dir
configuration.filecheck = shutil.which("FileCheck",
path=args.llvm_tools_dir)
configuration.yaml2obj = shutil.which("yaml2obj",
path=args.llvm_tools_dir)
+ configuration.yaml2macho_core = shutil.which("yaml2macho-core",
path=args.llvm_tools_dir)
if not configuration.get_filecheck_path():
logging.warning("No valid FileCheck executable; some tests may
fail...")
diff --git a/lldb/packages/Python/lldbsuite/test/lldbtest.py
b/lldb/packages/Python/lldbsuite/test/lldbtest.py
index 0fc85fcc4d2d6..599b019f0df8c 100644
--- a/lldb/packages/Python/lldbsuite/test/lldbtest.py
+++ b/lldb/packages/Python/lldbsuite/test/lldbtest.py
@@ -1702,6 +1702,21 @@ def yaml2obj(self, yaml_path, obj_path, max_size=None):
command += ["--max-size=%d" % max_size]
self.runBuildCommand(command)
+ def yaml2macho_core(self, yaml_path, obj_path, uuids=None):
+ """
+ Create a Mach-O corefile at the given path from a yaml file.
+
+ Throws subprocess.CalledProcessError if the object could not be
created.
+ """
+ yaml2macho_core_bin = configuration.get_yaml2macho_core_path()
+ if not yaml2macho_core_bin:
+ self.assertTrue(False, "No valid yaml2macho-core executable
specified")
+ if uuids != None:
+ command = [yaml2macho_core_bin, "-i", yaml_path, "-o", obj_path,
"-u", uuids]
+ else:
+ command = [yaml2macho_core_bin, "-i", yaml_path, "-o", obj_path]
+ self.runBuildCommand(command)
+
def cleanup(self, dictionary=None):
"""Platform specific way to do cleanup after build."""
module = builder_module()
diff --git a/lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.cpp
b/lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.cpp
index cb8ba05d461d4..0aff98078120e 100644
--- a/lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.cpp
+++ b/lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.cpp
@@ -12,6 +12,7 @@
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/Section.h"
#include "lldb/Symbol/Symbol.h"
+#include "lldb/Target/Target.h"
#include "lldb/Utility/LLDBLog.h"
#include "lldb/Utility/Log.h"
#include "llvm/ADT/DenseSet.h"
@@ -233,6 +234,41 @@ void ObjectFileJSON::CreateSections(SectionList
&unified_section_list) {
}
}
+bool ObjectFileJSON::SetLoadAddress(Target &target, lldb::addr_t value,
+ bool value_is_offset) {
+ Log *log(GetLog(LLDBLog::DynamicLoader));
+ if (!m_sections_up)
+ return true;
+
+ const bool warn_multiple = true;
+
+ addr_t slide = value;
+ if (!value_is_offset) {
+ addr_t lowest_addr = LLDB_INVALID_ADDRESS;
+ for (const SectionSP §ion_sp : *m_sections_up) {
+ addr_t section_load_addr = section_sp->GetFileAddress();
+ lowest_addr = std::min(lowest_addr, section_load_addr);
+ }
+ if (lowest_addr == LLDB_INVALID_ADDRESS)
+ return false;
+ slide = value - lowest_addr;
+ }
+
+ // Apply slide to each section's file address.
+ for (const SectionSP §ion_sp : *m_sections_up) {
+ addr_t section_load_addr = section_sp->GetFileAddress();
+ if (section_load_addr != LLDB_INVALID_ADDRESS) {
+ LLDB_LOGF(
+ log,
+ "ObjectFileJSON::SetLoadAddress section %s to load addr 0x%" PRIx64,
+ section_sp->GetName().AsCString(), section_load_addr + slide);
+ target.SetSectionLoadAddress(section_sp, section_load_addr + slide,
+ warn_multiple);
+ }
+ }
+ return true;
+}
+
bool ObjectFileJSON::MagicBytesMatch(DataBufferSP data_sp,
lldb::addr_t data_offset,
lldb::addr_t data_length) {
diff --git a/lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.h
b/lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.h
index b72565f468862..029c8ff188934 100644
--- a/lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.h
+++ b/lldb/source/Plugins/ObjectFile/JSON/ObjectFileJSON.h
@@ -86,6 +86,9 @@ class ObjectFileJSON : public ObjectFile {
Strata CalculateStrata() override { return eStrataUser; }
+ bool SetLoadAddress(Target &target, lldb::addr_t value,
+ bool value_is_offset) override;
+
static bool MagicBytesMatch(lldb::DataBufferSP data_sp, lldb::addr_t offset,
lldb::addr_t length);
diff --git a/lldb/test/API/macosx/arm-corefile-regctx/Makefile
b/lldb/test/API/macosx/arm-corefile-regctx/Makefile
deleted file mode 100644
index e1d0354441cd4..0000000000000
--- a/lldb/test/API/macosx/arm-corefile-regctx/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-MAKE_DSYM := NO
-
-CXX_SOURCES := create-arm-corefiles.cpp
-
-include Makefile.rules
-
diff --git
a/lldb/test/API/macosx/arm-corefile-regctx/TestArmMachoCorefileRegctx.py
b/lldb/test/API/macosx/arm-corefile-regctx/TestArmMachoCorefileRegctx.py
index 6754288a65e1a..a2890cdfeaa44 100644
--- a/lldb/test/API/macosx/arm-corefile-regctx/TestArmMachoCorefileRegctx.py
+++ b/lldb/test/API/macosx/arm-corefile-regctx/TestArmMachoCorefileRegctx.py
@@ -13,20 +13,14 @@
class TestArmMachoCorefileRegctx(TestBase):
NO_DEBUG_INFO_TESTCASE = True
- @skipUnlessDarwin
- def setUp(self):
- TestBase.setUp(self)
- self.build()
- self.create_corefile = self.getBuildArtifact("a.out")
- self.corefile = self.getBuildArtifact("core")
-
def test_armv7_corefile(self):
### Create corefile
- retcode = call(self.create_corefile + " armv7 " + self.corefile,
shell=True)
+ corefile = self.getBuildArtifact("core")
+ self.yaml2macho_core("armv7m.yaml", corefile)
target = self.dbg.CreateTarget("")
err = lldb.SBError()
- process = target.LoadCore(self.corefile)
+ process = target.LoadCore(corefile)
self.assertTrue(process.IsValid())
thread = process.GetSelectedThread()
frame = thread.GetSelectedFrame()
@@ -50,11 +44,12 @@ def test_armv7_corefile(self):
def test_arm64_corefile(self):
### Create corefile
- retcode = call(self.create_corefile + " arm64 " + self.corefile,
shell=True)
+ corefile = self.getBuildArtifact("core")
+ self.yaml2macho_core("arm64.yaml", corefile)
target = self.dbg.CreateTarget("")
err = lldb.SBError()
- process = target.LoadCore(self.corefile)
+ process = target.LoadCore(corefile)
self.assertTrue(process.IsValid())
thread = process.GetSelectedThread()
frame = thread.GetSelectedFrame()
diff --git a/lldb/test/API/macosx/arm-corefile-regctx/arm64.yaml
b/lldb/test/API/macosx/arm-corefile-regctx/arm64.yaml
new file mode 100644
index 0000000000000..4c23b69302a02
--- /dev/null
+++ b/lldb/test/API/macosx/arm-corefile-regctx/arm64.yaml
@@ -0,0 +1,31 @@
+cpu: arm64
+endian: little
+threads:
+ # (lldb) reg read
+ # % pbpaste | grep = | sed 's, ,,g' | awk -F= '{print "{name: " $1 ", value:
" $2 "},"}'
+ - regsets:
+ - flavor: gpr
+ registers: [
+ {name: x0, value: 0x0000000000000001}, {name: x1, value:
0x000000016fdff3c0},
+ {name: x2, value: 0x000000016fdff3d0}, {name: x3, value:
0x000000016fdff510},
+ {name: x4, value: 0x0000000000000000}, {name: x5, value:
0x0000000000000000},
+ {name: x6, value: 0x0000000000000000}, {name: x7, value:
0x0000000000000000},
+ {name: x8, value: 0x000000010000d910}, {name: x9, value:
0x0000000000000001},
+ {name: x10, value: 0xe1e88de000000000}, {name: x11, value:
0x0000000000000003},
+ {name: x12, value: 0x0000000000000148}, {name: x13, value:
0x0000000000004000},
+ {name: x14, value: 0x0000000000000008}, {name: x15, value:
0x0000000000000000},
+ {name: x16, value: 0x0000000000000000}, {name: x17, value:
0x0000000100003f5c},
+ {name: x18, value: 0x0000000000000000}, {name: x19, value:
0x0000000100003f5c},
+ {name: x20, value: 0x000000010000c000}, {name: x21, value:
0x000000010000d910},
+ {name: x22, value: 0x000000016fdff250}, {name: x23, value:
0x000000018ce12366},
+ {name: x24, value: 0x000000016fdff1d0}, {name: x25, value:
0x0000000000000001},
+ {name: x26, value: 0x0000000000000000}, {name: x27, value:
0x0000000000000000},
+ {name: x28, value: 0x0000000000000000}, {name: fp, value:
0x000000016fdff3a0},
+ {name: lr, value: 0x000000018cd97f28}, {name: sp, value:
0x000000016fdff140},
+ {name: pc, value: 0x0000000100003f5c}, {name: cpsr, value:
0x80001000}
+ ]
+ - flavor: exc
+ registers: [ {name: far, value: 0x0000000100003f5c},
+ {name: esr, value: 0xf2000000},
+ {name: exception, value: 0x00000000}
+ ]
diff --git a/lldb/test/API/macosx/arm-corefile-regctx/armv7m.yaml
b/lldb/test/API/macosx/arm-corefile-regctx/armv7m.yaml
new file mode 100644
index 0000000000000..1351056ed0999
--- /dev/null
+++ b/lldb/test/API/macosx/arm-corefile-regctx/armv7m.yaml
@@ -0,0 +1,37 @@
+cpu: armv7m
+endian: little
+threads:
+ # (lldb) reg read
+ # % pbpaste | grep = | sed 's, ,,g' | awk -F= '{print "{name: " $1 ", value:
" $2 "},"}'
+ - regsets:
+ - flavor: gpr
+ registers: [
+ {name: r0, value: 0x00010000}, {name: r1, value: 0x00020000},
+ {name: r2, value: 0x00030000}, {name: r3, value: 0x00040000},
+ {name: r4, value: 0x00050000}, {name: r5, value: 0x00060000},
+ {name: r6, value: 0x00070000}, {name: r7, value: 0x00080000},
+ {name: r8, value: 0x00090000}, {name: r9, value: 0x000a0000},
+ {name: r10, value: 0x000b0000}, {name: r11, value: 0x000c0000},
+ {name: r12, value: 0x000d0000}, {name: sp, value: 0x000e0000},
+ {name: lr, value: 0x000f0000}, {name: pc, value: 0x00100000},
+ {name: cpsr, value: 0x00110000}
+ ]
+ - flavor: exc
+ registers: [ {name: far, value: 0x00003f5c},
+ {name: esr, value: 0xf2000000},
+ {name: exception, value: 0x00000000}
+ ]
+
+memory-regions:
+ # $sp is 0x000e0000, have bytes surrounding that address
+ - addr: 0x000dffe0
+ UInt8: [
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
+ 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11,
+ 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a,
+ 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
+ 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c,
+ 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
+ 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e,
+ 0x3f
+ ]
diff --git a/lldb/test/API/macosx/arm-corefile-regctx/create-arm-corefiles.cpp
b/lldb/test/API/macosx/arm-corefile-regctx/create-arm-corefiles.cpp
deleted file mode 100644
index db39f12ecfb7e..0000000000000
--- a/lldb/test/API/macosx/arm-corefile-regctx/create-arm-corefiles.cpp
+++ /dev/null
@@ -1,266 +0,0 @@
-#include <mach-o/loader.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string>
-#include <vector>
-
-
-// Normally these are picked up by including <mach/thread_status.h>
-// but that does a compile time check for the build host arch and
-// only defines the ARM register context constants when building on
-// an arm system. We're creating fake corefiles, and might be
-// creating them on an intel system.
-#ifndef ARM_THREAD_STATE
-#define ARM_THREAD_STATE 1
-#endif
-#ifndef ARM_THREAD_STATE_COUNT
-#define ARM_THREAD_STATE_COUNT 17
-#endif
-#ifndef ARM_EXCEPTION_STATE
-#define ARM_EXCEPTION_STATE 3
-#endif
-#ifndef ARM_EXCEPTION_STATE_COUNT
-#define ARM_EXCEPTION_STATE_COUNT 3
-#endif
-#ifndef ARM_THREAD_STATE64
-#define ARM_THREAD_STATE64 6
-#endif
-#ifndef ARM_THREAD_STATE64_COUNT
-#define ARM_THREAD_STATE64_COUNT 68
-#endif
-#ifndef ARM_EXCEPTION_STATE64
-#define ARM_EXCEPTION_STATE64 7
-#endif
-#ifndef ARM_EXCEPTION_STATE64_COUNT
-#define ARM_EXCEPTION_STATE64_COUNT 4
-#endif
-
-union uint32_buf {
- uint8_t bytebuf[4];
- uint32_t val;
-};
-
-union uint64_buf {
- uint8_t bytebuf[8];
- uint64_t val;
-};
-
-void add_uint64(std::vector<uint8_t> &buf, uint64_t val) {
- uint64_buf conv;
- conv.val = val;
- for (int i = 0; i < 8; i++)
- buf.push_back(conv.bytebuf[i]);
-}
-
-void add_uint32(std::vector<uint8_t> &buf, uint32_t val) {
- uint32_buf conv;
- conv.val = val;
- for (int i = 0; i < 4; i++)
- buf.push_back(conv.bytebuf[i]);
-}
-
-std::vector<uint8_t> armv7_lc_thread_load_command() {
- std::vector<uint8_t> data;
- add_uint32(data, LC_THREAD); // thread_command.cmd
- add_uint32(data, 104); // thread_command.cmdsize
- add_uint32(data, ARM_THREAD_STATE); // thread_command.flavor
- add_uint32(data, ARM_THREAD_STATE_COUNT); // thread_command.count
- add_uint32(data, 0x00010000); // r0
- add_uint32(data, 0x00020000); // r1
- add_uint32(data, 0x00030000); // r2
- add_uint32(data, 0x00040000); // r3
- add_uint32(data, 0x00050000); // r4
- add_uint32(data, 0x00060000); // r5
- add_uint32(data, 0x00070000); // r6
- add_uint32(data, 0x00080000); // r7
- add_uint32(data, 0x00090000); // r8
- add_uint32(data, 0x000a0000); // r9
- add_uint32(data, 0x000b0000); // r10
- add_uint32(data, 0x000c0000); // r11
- add_uint32(data, 0x000d0000); // r12
- add_uint32(data, 0x000e0000); // sp
- add_uint32(data, 0x000f0000); // lr
- add_uint32(data, 0x00100000); // pc
- add_uint32(data, 0x00110000); // cpsr
-
- add_uint32(data, ARM_EXCEPTION_STATE); // thread_command.flavor
- add_uint32(data, ARM_EXCEPTION_STATE_COUNT); // thread_command.count
- add_uint32(data, 0x00003f5c); // far
- add_uint32(data, 0xf2000000); // esr
- add_uint32(data, 0x00000000); // exception
-
- return data;
-}
-
-std::vector<uint8_t> arm64_lc_thread_load_command() {
- std::vector<uint8_t> data;
- add_uint32(data, LC_THREAD); // thread_command.cmd
- add_uint32(data, 312); // thread_command.cmdsize
- add_uint32(data, ARM_THREAD_STATE64); // thread_command.flavor
- add_uint32(data, ARM_THREAD_STATE64_COUNT); // thread_command.count
- add_uint64(data, 0x0000000000000001); // x0
- add_uint64(data, 0x000000016fdff3c0); // x1
- add_uint64(data, 0x000000016fdff3d0); // x2
- add_uint64(data, 0x000000016fdff510); // x3
- add_uint64(data, 0x0000000000000000); // x4
- add_uint64(data, 0x0000000000000000); // x5
- add_uint64(data, 0x0000000000000000); // x6
- add_uint64(data, 0x0000000000000000); // x7
- add_uint64(data, 0x000000010000d910); // x8
- add_uint64(data, 0x0000000000000001); // x9
- add_uint64(data, 0xe1e88de000000000); // x10
- add_uint64(data, 0x0000000000000003); // x11
- add_uint64(data, 0x0000000000000148); // x12
- add_uint64(data, 0x0000000000004000); // x13
- add_uint64(data, 0x0000000000000008); // x14
- add_uint64(data, 0x0000000000000000); // x15
- add_uint64(data, 0x0000000000000000); // x16
- add_uint64(data, 0x0000000100003f5c); // x17
- add_uint64(data, 0x0000000000000000); // x18
- add_uint64(data, 0x0000000100003f5c); // x19
- add_uint64(data, 0x000000010000c000); // x20
- add_uint64(data, 0x000000010000d910); // x21
- add_uint64(data, 0x000000016fdff250); // x22
- add_uint64(data, 0x000000018ce12366); // x23
- add_uint64(data, 0x000000016fdff1d0); // x24
- add_uint64(data, 0x0000000000000001); // x25
- add_uint64(data, 0x0000000000000000); // x26
- add_uint64(data, 0x0000000000000000); // x27
- add_uint64(data, 0x0000000000000000); // x28
- add_uint64(data, 0x000000016fdff3a0); // fp
- add_uint64(data, 0x000000018cd97f28); // lr
- add_uint64(data, 0x000000016fdff140); // sp
- add_uint64(data, 0x0000000100003f5c); // pc
- add_uint32(data, 0x80001000); // cpsr
-
- add_uint32(data, 0x00000000); // padding
-
- add_uint32(data, ARM_EXCEPTION_STATE64); // thread_command.flavor
- add_uint32(data, ARM_EXCEPTION_STATE64_COUNT); // thread_command.count
- add_uint64(data, 0x0000000100003f5c); // far
- add_uint32(data, 0xf2000000); // esr
- add_uint32(data, 0x00000000); // exception
-
- return data;
-}
-
-std::vector<uint8_t> lc_segment(uint32_t fileoff,
- uint32_t lc_segment_data_size) {
- std::vector<uint8_t> data;
- // 0x000e0000 is the value of $sp in the armv7 LC_THREAD
- uint32_t start_vmaddr = 0x000e0000 - (lc_segment_data_size / 2);
- add_uint32(data, LC_SEGMENT); // segment_command.cmd
- add_uint32(data, sizeof(struct segment_command)); // segment_command.cmdsize
- for (int i = 0; i < 16; i++)
- data.push_back(0); // segment_command.segname[16]
- add_uint32(data, start_vmaddr); // segment_command.vmaddr
- add_uint32(data, lc_segment_data_size); // segment_command.vmsize
- add_uint32(data, fileoff); // segment_command.fileoff
- add_uint32(data, lc_segment_data_size); // segment_command.filesize
- add_uint32(data, 3); // segment_command.maxprot
- add_uint32(data, 3); // segment_command.initprot
- add_uint32(data, 0); // segment_command.nsects
- add_uint32(data, 0); // segment_command.flags
-
- return data;
-}
-
-enum arch { unspecified, armv7, arm64 };
-
-int main(int argc, char **argv) {
- if (argc != 3) {
- fprintf(stderr,
- "usage: create-arm-corefiles [armv7|arm64] <output-core-name>\n");
- exit(1);
- }
-
- arch arch = unspecified;
-
- if (strcmp(argv[1], "armv7") == 0)
- arch = armv7;
- else if (strcmp(argv[1], "arm64") == 0)
- arch = arm64;
- else {
- fprintf(stderr, "unrecognized architecture %s\n", argv[1]);
- exit(1);
- }
-
- // An array of load commands (in the form of byte arrays)
- std::vector<std::vector<uint8_t>> load_commands;
-
- // An array of corefile contents (page data, lc_note data, etc)
- std::vector<uint8_t> payload;
-
- // First add all the load commands / payload so we can figure out how large
- // the load commands will actually be.
- if (arch == armv7) {
- load_commands.push_back(armv7_lc_thread_load_command());
- load_commands.push_back(lc_segment(0, 0));
- } else if (arch == arm64) {
- load_commands.push_back(arm64_lc_thread_load_command());
- }
-
- int size_of_load_commands = 0;
- for (const auto &lc : load_commands)
- size_of_load_commands += lc.size();
-
- int header_and_load_cmd_room =
- sizeof(struct mach_header_64) + size_of_load_commands;
-
- // Erase the load commands / payload now that we know how much space...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/153911
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