[lldb] [test] Add tests for coredumps with multiple threads

Differential Revision: https://reviews.llvm.org/D101157

Author: mgorny

lldb/test/Shell/Register/Core/Inputs/aarch64-freebsd-multithread.core

@@ -0,0 +1,77 @@
+// This program is used to generate a core dump for testing multithreading
+// support.
+
+#include <atomic>
+#include <chrono>
+#include <cstdint>
+#include <thread>
+
+std::atomic_int start_counter{3};
+
+void pseudobarrier_wait() {
+  start_counter--;
+  while (start_counter > 0);
+}
+
+void fcommon(uint32_t a, uint32_t b, uint32_t c, uint32_t d, double fa, double fb, double fc, double fd, bool segv) {
+  if (segv) {
+    int *foo = nullptr;
+    *foo = 0;
+  }
+  while (1);
+}
+
+void f1() {
+  volatile uint32_t a = 0x01010101;
+  volatile uint32_t b = 0x02020202;
+  volatile uint32_t c = 0x03030303;
+  volatile uint32_t d = 0x04040404;
+  volatile double fa = 2.0;
+  volatile double fb = 4.0;
+  volatile double fc = 8.0;
+  volatile double fd = 16.0;
+
+  pseudobarrier_wait();
+  std::this_thread::sleep_for(std::chrono::milliseconds(200));
+  fcommon(a, b, c, d, fa, fb, fc, fd, true);
+}
+
+void f2() {
+  volatile uint32_t a = 0x11111111;
+  volatile uint32_t b = 0x12121212;
+  volatile uint32_t c = 0x13131313;
+  volatile uint32_t d = 0x14141414;
+  volatile double fa = 3.0;
+  volatile double fb = 6.0;
+  volatile double fc = 9.0;
+  volatile double fd = 12.0;
+
+  pseudobarrier_wait();
+  fcommon(a, b, c, d, fa, fb, fc, fd, false);
+}
+
+void f3() {
+  volatile uint32_t a = 0x21212121;
+  volatile uint32_t b = 0x22222222;
+  volatile uint32_t c = 0x23232323;
+  volatile uint32_t d = 0x24242424;
+  volatile double fa = 5.0;
+  volatile double fb = 10.0;
+  volatile double fc = 15.0;
+  volatile double fd = 20.0;
+
+  pseudobarrier_wait();
+  fcommon(a, b, c, d, fa, fb, fc, fd, false);
+}
+
+int main() {
+  std::thread t1{f1};
+  std::thread t2{f2};
+  std::thread t3{f3};
+
+  t3.join();
+  t2.join();
+  t1.join();
+
+  return 0;
+}

lldb/test/Shell/Register/Core/Inputs/multithread.cpp

@@ -0,0 +1,42 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/aarch64-freebsd-multithread.core | FileCheck %s
+
+thread list
+# CHECK: * thread #1: tid = 100160, 0x0000000000211fc4, name = 'a.out', stop reason = signal SIGSEGV
+# CHECK-NEXT:   thread #2: tid = 100115, 0x00000000406267a8, name = 'a.out', stop reason = signal SIGSEGV
+# CHECK-NEXT:   thread #3: tid = 100161, 0x0000000000211fc8, name = 'a.out', stop reason = signal SIGSEGV
+# CHECK-NEXT:   thread #4: tid = 100162, 0x0000000000211fc8, name = 'a.out', stop reason = signal SIGSEGV
+
+
+register read --all
+# CHECK-DAG: w0 = 0x01010101
+# CHECK-DAG: w1 = 0x02020202
+# CHECK-DAG: w2 = 0x03030303
+# CHECK-DAG: w3 = 0x04040404
+# CHECK-DAG: v0 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: v1 = {0x00 0x00 0x00 0x00 0x00 0x00 0x10 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: v2 = {0x00 0x00 0x00 0x00 0x00 0x00 0x20 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: v3 = {0x00 0x00 0x00 0x00 0x00 0x00 0x30 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+
+thread select 3
+# CHECK: (lldb) thread select 3
+register read --all
+# CHECK-DAG: w0 = 0x11111111
+# CHECK-DAG: w1 = 0x12121212
+# CHECK-DAG: w2 = 0x13131313
+# CHECK-DAG: w3 = 0x14141414
+# CHECK-DAG: v0 = {0x00 0x00 0x00 0x00 0x00 0x00 0x08 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: v1 = {0x00 0x00 0x00 0x00 0x00 0x00 0x18 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: v2 = {0x00 0x00 0x00 0x00 0x00 0x00 0x22 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: v3 = {0x00 0x00 0x00 0x00 0x00 0x00 0x28 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+
+thread select 4
+# CHECK: (lldb) thread select 4
+register read --all
+# CHECK-DAG: w0 = 0x21212121
+# CHECK-DAG: w1 = 0x22222222
+# CHECK-DAG: w2 = 0x23232323
+# CHECK-DAG: w3 = 0x24242424
+# CHECK-DAG: v0 = {0x00 0x00 0x00 0x00 0x00 0x00 0x14 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: v1 = {0x00 0x00 0x00 0x00 0x00 0x00 0x24 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: v2 = {0x00 0x00 0x00 0x00 0x00 0x00 0x2e 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}
+# CHECK-DAG: v3 = {0x00 0x00 0x00 0x00 0x00 0x00 0x34 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00}

lldb/test/Shell/Register/Core/Inputs/x86-32-freebsd-multithread.core

@@ -0,0 +1,42 @@
+# RUN: %lldb -b -s %s -c %p/Inputs/x86-32-freebsd-multithread.core | FileCheck %s
+
+thread list
+# CHECK: * thread #1: tid = 100761, 0x00402ed1, name = 'a.out', stop reason = signal SIGSEGV
+# CHECK-NEXT:   thread #2: tid = 100744, 0x2057f78b, name = 'a.out', stop reason = signal SIGSEGV
+# CHECK-NEXT:   thread #3: tid = 100762, 0x00402edc, name = 'a.out', stop reason = signal SIGSEGV
+# CHECK-NEXT:   thread #4: tid = 100763, 0x00402edc, name = 'a.out', stop reason = signal SIGSEGV
+
+
+register read --all
+# CHECK-DAG: ecx = 0x04040404
+# CHECK-DAG: edx = 0x03030303
+# CHECK-DAG: edi = 0x01010101
+# CHECK-DAG: esi = 0x02020202
+# CHECK-DAG: st4 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x80 0x00 0x40}
+# CHECK-DAG: st5 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x80 0x01 0x40}
+# CHECK-DAG: st6 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x80 0x02 0x40}
+# CHECK-DAG: st7 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x80 0x03 0x40}
+
+thread select 3
+# CHECK: (lldb) thread select 3
+register read --all
+# CHECK-DAG: ecx = 0x14141414
+# CHECK-DAG: edx = 0x13131313
+# CHECK-DAG: edi = 0x11111111
+# CHECK-DAG: esi = 0x12121212
+# CHECK-DAG: st4 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xc0 0x00 0x40}
+# CHECK-DAG: st5 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xc0 0x01 0x40}
+# CHECK-DAG: st6 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x90 0x02 0x40}
+# CHECK-DAG: st7 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xc0 0x02 0x40}
+
+thread select 4
+# CHECK: (lldb) thread select 4
+register read --all
+# CHECK-DAG: ecx = 0x24242424
+# CHECK-DAG: edx = 0x23232323
+# CHECK-DAG: edi = 0x21212121
+# CHECK-DAG: esi = 0x22222222
+# CHECK-DAG: st4 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xa0 0x01 0x40}
+# CHECK-DAG: st5 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xa0 0x02 0x40}
+# CHECK-DAG: st6 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xf0 0x02 0x40}
+# CHECK-DAG: st7 = {0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xa0 0x03 0x40}