* printcmd.c: (printf_command): Add support for new DFP

    modifiers %H, %D and %DD.
    * configure.ac: Add check for DECFLOAT printf support.
    * configure: Regenerated.
    * doc/gdb.texinfo: Update printf command's description.
    * testsuite/gdb.base/printcmds.exp: New function
    test_printf_with_dfp.

1 files changed, 52 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/printcmds.exp b/gdb/testsuite/gdb.base/printcmds.exp
index a44db01..7745116 100644
--- a/gdb/testsuite/gdb.base/printcmds.exp
+++ b/gdb/testsuite/gdb.base/printcmds.exp
@@ -668,6 +668,57 @@ proc test_printf {} {
 0xfeedface, 0xdeadbeef, 5.0" "bad -99.54\[0-9\]+, z feedface, deadbeef, 5.0+"
 }
 
+#Test printing DFP values with printf
+proc test_printf_with_dfp {} {
+
+    # Test various dfp values, covering 32-bit, 64-bit and 128-bit ones
+
+    # _Decimal32 constants, which can support up to 7 digits
+    gdb_test "printf \"%H\\n\",1.2df" "1.2"
+    gdb_test "printf \"%H\\n\",-1.2df" "-1.2"
+    gdb_test "printf \"%H\\n\",1.234567df" "1.234567"
+    gdb_test "printf \"%H\\n\",-1.234567df" "-1.234567"
+    gdb_test "printf \"%H\\n\",1234567.df" "1234567"
+    gdb_test "printf \"%H\\n\",-1234567.df" "-1234567"
+
+    gdb_test "printf \"%H\\n\",1.2E1df" "12"
+    gdb_test "printf \"%H\\n\",1.2E10df" "1.2E\\+10"
+    gdb_test "printf \"%H\\n\",1.2E-10df" "1.2E-10"
+
+    # The largest exponent for 32-bit dfp value is 96.
+    gdb_test "printf \"%H\\n\",1.2E96df" "1.200000E\\+96"
+
+    # _Decimal64 constants, which can support up to 16 digits
+    gdb_test "printf \"%D\\n\",1.2dd" "1.2"
+    gdb_test "printf \"%D\\n\",-1.2dd" "-1.2"
+    gdb_test "printf \"%D\\n\",1.234567890123456dd" "1.234567890123456"
+    gdb_test "printf \"%D\\n\",-1.234567890123456dd" "-1.234567890123456"
+    gdb_test "printf \"%D\\n\",1234567890123456.dd" "1234567890123456"
+    gdb_test "printf \"%D\\n\",-1234567890123456.dd" "-1234567890123456"
+
+    gdb_test "printf \"%D\\n\",1.2E1dd" "12"
+    gdb_test "printf \"%D\\n\",1.2E10dd" "1.2E\\+10"
+    gdb_test "printf \"%D\\n\",1.2E-10dd" "1.2E-10"
+
+    # The largest exponent for 64-bit dfp value is 384.
+    gdb_test "printf \"%D\\n\",1.2E384dd" "1.200000000000000E\\+384"
+
+    # _Decimal128 constants, which can support up to 34 digits
+    gdb_test "printf \"%DD\\n\",1.2dl" "1.2"
+    gdb_test "printf \"%DD\\n\",-1.2dl" "-1.2"
+    gdb_test "printf \"%DD\\n\",1.234567890123456789012345678901234dl" "1.234567890123456789012345678901234"
+    gdb_test "printf \"%DD\\n\",-1.234567890123456789012345678901234dl" "-1.234567890123456789012345678901234"
+    gdb_test "printf \"%DD\\n\",1234567890123456789012345678901234.dl" "1234567890123456789012345678901234"
+    gdb_test "printf \"%DD\\n\",-1234567890123456789012345678901234.dl" "-1234567890123456789012345678901234"
+
+    gdb_test "printf \"%DD\\n\",1.2E1dl" "12"
+    gdb_test "printf \"%DD\\n\",1.2E10dl" "1.2E\\+10"
+    gdb_test "printf \"%DD\\n\",1.2E-10dl" "1.2E-10"
+
+    # The largest exponent for 128-bit dfp value is 6144.
+    gdb_test "printf \"%DD\\n\",1.2E6144dl" "1.200000000000000000000000000000000E\\+6144"
+}
+
 # Escape a left curly brace to prevent it from being interpreted as 
 # the beginning of a bound
 proc gdb_test_escape_braces { args } {
@@ -711,6 +762,7 @@ if [set_lang_c] then {
 	test_print_string_constants
 	test_print_array_constants
 	test_printf
+	test_printf_with_dfp
     }
 } else {
     fail "C print command tests suppressed"