gdb/testsuite/gdb.trace: Deduplicate pcreg/spreg/fpreg.

These variables were used in many gdb.trace tests.  Keep them in one place,
to reduce work needed for new targets.

gdb/testsuite/ChangeLog:

	* gdb.trace/backtrace.exp: Use global fpreg/spreg definition, add $
	in front.
	* gdb.trace/change-loc.exp: Use global pcreg definition.
	* gdb.trace/collection.exp: Use global pcreg/fpreg/spreg definition.
	* gdb.trace/entry-values.exp: Use global spreg definition, add $
	in front.
	* gdb.trace/mi-trace-frame-collected.exp: Use global pcreg definition.
	* gdb.trace/pending.exp: Likewise.
	* gdb.trace/report.exp: Use global pcreg/fpreg/spreg definition.
	* gdb.trace/trace-break.exp: Likewise.
	* gdb.trace/trace-condition.exp: Use global pcreg definition, add $
	in front.
	* gdb.trace/unavailable.exp: Use global pcreg/fpreg/spreg definition.
	* gdb.trace/while-dyn.exp: Use global fpreg definition, add $
	in front.
	* lib/trace-support.exp: Define fpreg, spreg, pcreg variables.

1 files changed, 0 insertions, 16 deletions

diff --git a/gdb/testsuite/gdb.trace/trace-break.exp b/gdb/testsuite/gdb.trace/trace-break.exp
index 1f57601..4329f3a 100644
--- a/gdb/testsuite/gdb.trace/trace-break.exp
+++ b/gdb/testsuite/gdb.trace/trace-break.exp
@@ -37,22 +37,6 @@ if ![gdb_target_supports_trace] {
     return -1
 }
 
-set fpreg "fp"
-set spreg "sp"
-set pcreg "pc"
-
-if [is_amd64_regs_target] {
-    set fpreg "rbp"
-    set spreg "rsp"
-    set pcreg "rip"
-} elseif [is_x86_like_target] {
-    set fpreg "ebp"
-    set spreg "esp"
-    set pcreg "eip"
-} elseif [is_aarch64_target] {
-    set fpreg "x29"
-}
-
 # Set breakpoint and tracepoint at the same address.
 
 proc break_trace_same_addr_1 { trace_type option } \