From 0d81f350ec01630ef7cd9ae4385a1dc504c54d73 Mon Sep 17 00:00:00 2001 From: Jerome Guitton Date: Sat, 8 Sep 2018 16:47:11 -0500 Subject: [PATCH] Handle PPC64 function descriptor in Ada decoding On PPC64, the entry point of the function "FN" is ".FN" when a function descriptor is used. One of the consequences of this is that GDB then presents the name of the function to the user (eg: in backtraces) with the leading dot, which is a low-level internal detail that the user should not be seeing. The Ada decoding should strip it. gdb/ChangeLog: * ada-lang.c (ada_decode): strip dot prefix in symbol name. No testcase added, as a number of existing testcases should already demonstrate that problem. --- gdb/ChangeLog | 4 ++++ gdb/ada-lang.c | 5 +++++ 2 files changed, 9 insertions(+) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 4aeb0ba..41b1ad4 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,7 @@ +2018-09-08 Jerome Guitton + + * ada-lang.c (ada_decode): strip dot prefix in symbol name. + 2018-09-08 Joel Brobecker * ada-lang.c (ada_exception_sal): Replace gdb_assert calls diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c index c5cddd0..16c7c51 100644 --- a/gdb/ada-lang.c +++ b/gdb/ada-lang.c @@ -1164,6 +1164,11 @@ ada_decode (const char *encoded) static char *decoding_buffer = NULL; static size_t decoding_buffer_size = 0; + /* With function descriptors on PPC64, the value of a symbol named + ".FN", if it exists, is the entry point of the function "FN". */ + if (encoded[0] == '.') + encoded += 1; + /* The name of the Ada main procedure starts with "_ada_". This prefix is not part of the decoded name, so skip this part if we see this prefix. */ -- 2.7.4