[lldb-mi] Fix implementation for a few mi commands

Summary:
Some of the mi commands implemented in lldb-mi are incomplete/not confirming to the spec.
- `gdb-show` and `gdb-set` doesn't support getting/setting `disassembly-flavor`
- `environment-cd` should also change the working directory for inferior
- debugger CLI output should be printed as console-stream-output record, rather than being dumped directly
to stdout
- `target-select` should provide inner error message in mi response

Related bug report:
- https://llvm.org/bugs/show_bug.cgi?id=28026
- https://llvm.org/bugs/show_bug.cgi?id=28718
- https://llvm.org/bugs/show_bug.cgi?id=30265

Reviewers: ki.stfu, abidh

Subscribers: abidh, ki.stfu, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D24711

llvm-svn: 291104

1 files changed, 15 insertions, 1 deletions

diff --git a/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/main.cpp b/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/main.cpp
index 6a2079f2ce7..0215b428925 100644
--- a/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/main.cpp
+++ b/lldb/packages/Python/lldbsuite/test/tools/lldb-mi/main.cpp
@@ -9,11 +9,25 @@
 
 #include <cstdio>
 
+#ifdef _WIN32
+    #include <direct.h>
+    #define getcwd _getcwd // suppress "deprecation" warning
+#else
+    #include <unistd.h>
+#endif
+
 int
 main(int argc, char const *argv[])
 {
-    int a  = 10;
+    int a = 10;
+
+    char buf[512];
+    char *ans = getcwd(buf, sizeof(buf));
+    if (ans) {
+        printf("cwd: %s\n", ans);
+    }
 
     printf("argc=%d\n", argc); // BP_printf
+
     return 0;
 }