2009-12-10 Oza Pawandeep (paawan1982@yahoo.com

	* gdb.reverse/i387-env-reverse.c: New file.
	* gdb.reverse/i387-env-reverse.exp: New file.
	* gdb.reverse/i387-stack-reverse.c: New file.
	* gdb.reverse/i387-stack-reverse.exp: New file.

5 files changed, 429 insertions, 0 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 069280cfaf1..751df31e9a4 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2009-12-10  Oza Pawandeep (paawan1982@yahoo.com
+
+	* gdb.reverse/i387-env-reverse.c: New file.
+	* gdb.reverse/i387-env-reverse.exp: New file.
+	* gdb.reverse/i387-stack-reverse.c: New file.
+	* gdb.reverse/i387-stack-reverse.exp: New file.
+
 2009-12-08  Phil Muldoon  <pmuldoon@redhat.com>
 
 	* gdb.python/py-type.exp (test_range): New test.
diff --git a/gdb/testsuite/gdb.reverse/i387-env-reverse.c b/gdb/testsuite/gdb.reverse/i387-env-reverse.c
new file mode 100644
index 00000000000..c346879a4b3
--- /dev/null
+++ b/gdb/testsuite/gdb.reverse/i387-env-reverse.c
@@ -0,0 +1,60 @@
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+
+
+float no1,no2,no3,no4,no5,no6,no7;
+float result,resultd,resultld; 
+float *float_memory;
+long double ldx = 88888888888888888888.88, ldy = 9999999999999999999.99;
+double x = 100.345, y = 25.7789;
+/* marks FPU stack as empty */
+void empty_fpu_stack()
+{
+  asm ("ffree %st(1) \n\t"
+       "ffree %st(2) \n\t"
+       "ffree %st(3) \n\t"
+       "ffree %st(4) \n\t"
+       "ffree %st(5) \n\t"
+       "ffree %st(6) \n\t"
+       "ffree %st(7)");
+}   
+
+/* initialization of floats */
+void init_floats()
+{
+  no1 = 10.45;
+  no2 = 20.77;
+  no3 = 156.89874646;
+  no4 = 14.56;
+  no5 = 11.11;
+  no6 = 66.77;
+  no7 = 88.88;
+  float_memory = malloc(sizeof(float) * 4);
+  *float_memory = 256.256;
+  *(float_memory + 1) = 356.356;
+  *(float_memory + 2) = 456.456;
+  *(float_memory + 3) = 556.556;
+}
+
+int main()
+{
+  init_floats();
+  empty_fpu_stack();    /* BEGIN I387-FLOAT-REVERSE */  
+  
+  asm("nop");   /* TEST ENV */
+  asm ("fsave %0" : "=m"(*float_memory) : );   
+  asm ("frstor %0" : : "m"(*float_memory));
+  asm ("fstsw %ax");     /* test eax register */
+
+  asm ("fld1");
+  asm ("fldl2t");
+  asm ("fldl2e");
+  asm ("fldpi");
+  asm ("fldlg2");
+  asm ("fldln2");
+  asm ("fldz");
+  asm ("nop");
+  
+  return 1;             /* END I387-FLOAT-REVERSE */
+}
diff --git a/gdb/testsuite/gdb.reverse/i387-env-reverse.exp b/gdb/testsuite/gdb.reverse/i387-env-reverse.exp
new file mode 100644
index 00000000000..985675be76e
--- /dev/null
+++ b/gdb/testsuite/gdb.reverse/i387-env-reverse.exp
@@ -0,0 +1,147 @@
+# Copyright 2009 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# This file is part of the gdb testsuite.
+
+if $tracelevel {
+    strace $tracelevel
+}
+
+set prms_id 0
+set bug_id 0
+
+if ![istarget "i?86-*linux*"] then {
+    verbose "Skipping i387 reverse float tests."
+    return
+}
+
+set testfile "i387-env-reverse"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+# some targets have leading underscores on assembly symbols.
+# TODO: detect this automatically
+set additional_flags ""
+if [istarget "i?86-*-cygwin*"] then {
+  set additional_flags "additional_flags=-DSYMBOL_PREFIX=\"_\""
+}
+
+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug $additional_flags]] != "" } {
+    untested i387-float-reverse
+    return -1
+}
+
+# Get things started.
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+runto main
+
+# Record to end of main
+
+set location [gdb_get_line_number "END I387-FLOAT-REVERSE"]
+gdb_test "record" "" "Turn on process record"
+gdb_test "until $location" ".*/$srcfile:$location.*" \
+    "record to end of main"
+
+# Now rewind to beginning so we can begin testing.
+
+set location [gdb_get_line_number "BEGIN I387-FLOAT-REVERSE"]
+gdb_test "set exec-dir reverse" "" "set reverse direction"
+gdb_test "until $location" ".*/$srcfile:$location.*" \
+    "rewind to beginning of main"
+gdb_test "set exec-dir forward" "" "set forward direction"
+
+# Test FPU env particularly ftag and fstatus reigters.
+
+set location [gdb_get_line_number "TEST ENV"]
+gdb_test "until $location" ".*/$srcfile:$location.*asm.*nop.*" \
+    "begin testing fpu env"       
+
+gdb_test "n" "asm.*fsave.*"               "save FPU env in memory"    
+gdb_test "n" "asm.*frstor.*"              "restore FPU env"
+gdb_test "n" "asm.*fstsw.*"               "store status word in EAX"
+gdb_test "n" "asm.*fld1.*"                "push st0"
+
+gdb_test "info register eax" "eax *0x8040000.*\t.*"  "verify eax == 0x8040000"
+gdb_test "info register fstat" "fstat *0.*\t.*"      "verify fstat == 0"
+gdb_test "info register ftag" "ftag *0xffff.*\t.*"   "verify ftag == 0xffff"
+
+gdb_test "stepi" "asm.*fldl2t.*"                      "push st0"
+gdb_test "info register fstat" "fstat *0x3800.*\t.*"  "verify fstat == 0x3800"
+gdb_test "info register ftag" "ftag *0x3fff.*\t.*"    "verify ftag  == 0x3fff"
+
+gdb_test "stepi" "asm.*fldl2e.*"                  "push st0"
+gdb_test "info register fstat" "fstat *0x3000.*\t.*"  "verify fstat == 0x3000"
+gdb_test "info register ftag" "ftag *0xfff.*\t.*"     "verify ftag  == 0xfff"
+
+gdb_test "stepi" "asm.*fldpi.*"                   "push st0"
+gdb_test "info register fstat" "fstat *0x2800.*\t.*"  "verify fstat == 0x2800"
+gdb_test "info register ftag" "ftag *0x3ff.*\t.*"     "verify ftag  == 0x3ff"
+
+gdb_test "stepi" "asm.*fldlg2.*"                  "push st0"
+gdb_test "info register fstat" "fstat *0x2000.*\t.*"  "verify fstat == 0x2000"
+gdb_test "info register ftag" "ftag *0xff.*\t.*"      "verify ftag  == 0xff"
+
+gdb_test "stepi" "asm.*fldln2.*"                  "push st0"
+gdb_test "info register fstat" "fstat *0x1800.*\t.*"  "verify fstat == 0x1800"
+gdb_test "info register ftag" "ftag *0x3f.*\t.*"      "verify ftag  == 0x3f"
+
+gdb_test "stepi" "asm.*fldz.*"                    "push st0"
+gdb_test "info register fstat" "fstat *0x1000.*\t.*"  "verify fstat == 0x1000"
+gdb_test "info register ftag" "ftag *0xf.*\t.*"       "verify ftag  == 0xf"
+
+gdb_test "stepi" "asm.*nop.*"                    "push st0"
+gdb_test "info register fstat" "fstat *0x800.*\t.*"  "verify fstat == 0x800"
+gdb_test "info register ftag" "ftag *0x7.*\t.*"      "verify ftag  == 0x7"
+
+
+# move backward and ehck we get the same registers back.
+
+gdb_test "reverse-stepi" "asm.*fldz.*"           "push st0"
+gdb_test "info register fstat" "fstat *0x1000.*\t.*" "verify fstat == 0x1000"
+gdb_test "info register ftag" "ftag *0xf.*\t.*"      "verify ftag  == 0xf"
+
+gdb_test "reverse-stepi" "asm.*fldln2.*"          "push st0"
+gdb_test "info register fstat" "fstat *0x1800.*\t.*"  "verify fstat == 0x1800"
+gdb_test "info register ftag" "ftag *0x3f.*\t.*"      "verify ftag  == 0x3f"
+
+gdb_test "reverse-stepi" "asm.*fldlg2.*"          "push st0"
+gdb_test "info register fstat" "fstat *0x2000.*\t.*"  "verify fstat == 0x2000"
+gdb_test "info register ftag" "ftag *0xff.*\t.*"      "verify ftag  == 0xff"
+
+gdb_test "reverse-stepi" "asm.*fldpi.*"          "push st0"
+gdb_test "info register fstat" "fstat *0x2800.*\t.*" "verify fstat == 0x2800"
+gdb_test "info register ftag" "ftag *0x3ff.*\t.*"    "verify ftag  == 0x3ff"
+
+gdb_test "reverse-stepi" "asm.*fldl2e.*"          "push st0"
+gdb_test "info register fstat" "fstat *0x3000.*\t.*"  "verify fstat == 0x3000"
+gdb_test "info register ftag" "ftag *0xfff.*\t.*"     "verify ftag  == 0xfff"
+
+gdb_test "reverse-stepi" "asm.*fldl2t.*"          "push st0"
+gdb_test "info register fstat" "fstat *0x3800.*\t.*"  "verify fstat == 0x3800"
+gdb_test "info register ftag" "ftag *0x3fff.*\t.*"    "verify ftag  == 0x3fff"
+
+gdb_test "reverse-stepi" "asm.*fld1.*"            "push st0"
+gdb_test "info register fstat" "fstat *0.*\t.*"       "verify fstat == 0"
+gdb_test "info register ftag" "ftag *0xffff.*\t.*"    "verify ftag == 0xffff"
+
+
+
+
+
+
diff --git a/gdb/testsuite/gdb.reverse/i387-stack-reverse.c b/gdb/testsuite/gdb.reverse/i387-stack-reverse.c
new file mode 100644
index 00000000000..8c690f7def4
--- /dev/null
+++ b/gdb/testsuite/gdb.reverse/i387-stack-reverse.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <math.h>
+#include <stdlib.h>
+
+/* marks FPU stack as empty */
+void empty_fpu_stack()
+{
+  asm ("ffree %st(1) \n\t"
+       "ffree %st(2) \n\t"
+       "ffree %st(3) \n\t"
+       "ffree %st(4) \n\t"
+       "ffree %st(5) \n\t"
+       "ffree %st(6) \n\t"
+       "ffree %st(7)");
+}   
+
+/* tests floating point arithmatic */
+void test_arith_floats()
+{
+  
+}
+
+int main()
+{
+  empty_fpu_stack();    /* BEGIN I387-FLOAT-REVERSE */
+  
+  asm ("fld1");   /* test st0 register */
+  asm ("fldl2t"); /* test st0, st1 */
+  asm ("fldl2e"); /* test st0, st1, st2 */
+  asm ("fldpi");  /* test st0, st1, st2, st3 */
+  asm ("fldlg2"); /* test st0, st1, st2, st3, st4 */
+  asm ("fldln2"); /* test st0, st1, st2, st3, st4, st5 */
+  asm ("fldz");   /* test st0, st1, st2, st3, st4, st5, st6 */
+  asm ("fld1");   /* test st0, st1, st2, st3, st4, st5, st6, st7 */
+  asm ("nop");
+  
+  return 1;             /* END I387-FLOAT-REVERSE */
+}
diff --git a/gdb/testsuite/gdb.reverse/i387-stack-reverse.exp b/gdb/testsuite/gdb.reverse/i387-stack-reverse.exp
new file mode 100644
index 00000000000..bb38e59094b
--- /dev/null
+++ b/gdb/testsuite/gdb.reverse/i387-stack-reverse.exp
@@ -0,0 +1,177 @@
+# Copyright 2009 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# This file is part of the gdb testsuite.
+
+if $tracelevel {
+    strace $tracelevel
+}
+
+set prms_id 0
+set bug_id 0
+
+if ![istarget "i?86-*linux*"] then {
+    verbose "Skipping i387 reverse float tests."
+    return
+}
+
+set testfile "i387-stack-reverse"
+set srcfile ${testfile}.c
+set binfile ${objdir}/${subdir}/${testfile}
+
+# some targets have leading underscores on assembly symbols.
+# TODO: detect this automatically
+set additional_flags ""
+if [istarget "i?86-*-cygwin*"] then {
+  set additional_flags "additional_flags=-DSYMBOL_PREFIX=\"_\""
+}
+
+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug $additional_flags]] != "" } {
+    untested i387-float-reverse
+    return -1
+}
+
+# Get things started.
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+gdb_load ${binfile}
+runto main
+
+# Record to end of main
+
+set location [gdb_get_line_number "END I387-FLOAT-REVERSE"]
+gdb_test "record" "" "Turn on process record"
+gdb_test "until $location" ".*/$srcfile:$location.*" \
+    "record to end of main"
+
+# Now rewind to beginning so we can begin testing.
+
+set location [gdb_get_line_number "BEGIN I387-FLOAT-REVERSE"]
+gdb_test "set exec-dir reverse" "" "set reverse direction"
+gdb_test "until $location" ".*/$srcfile:$location.*" \
+    "rewind to beginning of main"
+gdb_test "set exec-dir forward" "" "set forward direction"
+
+# Test FPU stack. FPU stack includes st0, st1, st2, st3, st4, 
+# st5, st6, st7. We push 8 values to FPU stack in record mode
+# and see whether all are getting recorded.
+
+set location [gdb_get_line_number "test st0 register"]
+gdb_test "until $location" ".*/$srcfile:$location.*asm.*fld1.*" \
+    "begin test st0"
+gdb_test "stepi" "asm.*fldl2t.*"              "push st0 == 1"
+gdb_test "info register st0" "st0 *1\t.*"     "verify st0 == 1"
+
+
+gdb_test "stepi" "asm.*fldl2e.*"              "push st0 == 3.3219280948*"
+gdb_test "info register st0" "st0 *3.32192.*\t.*" "verify st0 == 3.321928094*"
+gdb_test "info register st1" "st1 *1\t.*"       "verify st1 == 1"
+
+gdb_test "stepi" "asm.*fldpi.*"                   "push st0 == 1.4426950406*"
+gdb_test "info register st0" "st0 *1.44269.*\t.*" "verify st0 == 1.442695040*"
+gdb_test "info register st1" "st1 *3.32192.*\t.*" "verify st1 == 3.3219280948*"
+gdb_test "info register st2" "st2 *1\t.*"         "verify st2 == 1"
+                                               
+gdb_test "stepi" "asm.*fldlg2.*"                  "push st0 == 3.14159265*"
+gdb_test "info register st0" "st0 *3.14159.*\t.*" "verify st0 == 3.14159265*"
+gdb_test "info register st1" "st1 *1.44269.*\t.*" "verify st1 == 1.4426950*"
+gdb_test "info register st2" "st2 *3.32192.*\t.*" "verify st2 == 3.3219280*"
+gdb_test "info register st3" "st3 *1\t.*"          "verify st3 == 1"
+
+gdb_test "stepi" "asm.*fldln2.*"                  "push st0 == 0.301029*"
+gdb_test "info register st0" "st0 *0.30102.*\t.*" "verify st0 == 0.301029*"
+gdb_test "info register st1" "st1 *3.14159.*\t.*" "verify st1 == 3.14159265*"
+gdb_test "info register st2" "st2 *1.44269.*\t.*" "verify st2 == 1.44269506*"
+gdb_test "info register st3" "st3 *3.32192.*\t.*" "verify st3 == 3.3219280948*"
+gdb_test "info register st4" "st4 *1\t.*"         "verify st4 == 1"
+
+gdb_test "stepi" "asm.*fldz.*"                    "push st0 == 0.69314*"
+gdb_test "info register st0" "st0 *0.69314.*\t.*" "verify st0 == 0.69314*"
+gdb_test "info register st1" "st1 *0.30102.*\t.*" "verify st1 == 0.301029*"
+gdb_test "info register st2" "st2 *3.14159.*\t.*" "verify st2 == 3.14159265*"
+gdb_test "info register st3" "st3 *1.44269.*\t.*" "verify st3 == 1.442695040*"
+gdb_test "info register st4" "st4 *3.32192.*\t.*" "verify st4 == 3.3219280948*"
+gdb_test "info register st5" "st5 *1\t.*"         "verify st5 == 1"
+
+gdb_test "stepi" "asm.*fld1.*"                    "push st0 == 0"
+gdb_test "info register st0" "st0 *0\t.*"         "verify st0 == 0"
+gdb_test "info register st1" "st1 *0.69314.*\t.*" "verify st1 == 0.69314*"
+gdb_test "info register st2" "st2 *0.30102.*\t.*" "verify st2 == 0.301029*"
+gdb_test "info register st3" "st3 *3.14159.*\t.*" "verify st3 == 3.14159265*"
+gdb_test "info register st4" "st4 *1.44269.*\t.*" "verify st4 == 1.442695040*"
+gdb_test "info register st5" "st5 *3.32192.*\t.*" "verify st5 == 3.32192809*"
+gdb_test "info register st6" "st6 *1\t.*"         "verify st6 == 1"
+
+gdb_test "stepi" "asm.*nop.*"                     "push st0 == 0"
+gdb_test "info register st0" "st0 *1\t.*"         "verify st0 == 1"
+gdb_test "info register st1" "st1 *0\t.*"         "verify st1 == 0"
+gdb_test "info register st2" "st2 *0.69314.*\t.*" "verify st2 == 0.69314*"
+gdb_test "info register st3" "st3 *0.30102.*\t.*" "verify st3 == 0.301029*"
+gdb_test "info register st4" "st4 *3.14159.*\t.*" "verify st4 == 3.14159265*"
+gdb_test "info register st5" "st5 *1.44269.*\t.*" "verify st5 == 1.44269504*"
+gdb_test "info register st6" "st6 *3.32192.*\t.*" "verify st6 == 3.3219280948*"
+gdb_test "info register st7" "st7 *1.*"           "verify st7 == 1"
+
+# Now step backward, and check that st0 value reverts to zero.
+
+gdb_test "reverse-stepi" "asm.*fld1.*"            "undo registers, st0-st7"
+gdb_test "info register st0" "st0 *0\t.*"         "verify st0 == 0"
+gdb_test "info register st1" "st1 *0.69314.*\t.*" "verify st1 == 0.69314*"
+gdb_test "info register st2" "st2 *0.30102.*\t.*" "verify st2 == 0.301029*"
+gdb_test "info register st3" "st3 *3.14159.*\t.*" "verify st3 == 3.14159265*"
+gdb_test "info register st4" "st4 *1.44269.*\t.*" "verify st4 == 1.442695040*"
+gdb_test "info register st5" "st5 *3.32192.*\t.*" "verify st5 == 3.3219280948*"
+gdb_test "info register st6" "st6 *1\t.*"         "verify st6 == 1"
+
+gdb_test "reverse-stepi" "asm.*fldz.*"            "push st0 == 0.69314*"
+gdb_test "info register st0" "st0 *0.69314.*\t.*" "verify st0 == 0.69314*"
+gdb_test "info register st1" "st1 *0.30102.*\t.*" "verify st1 == 0.301029*"
+gdb_test "info register st2" "st2 *3.14159.*\t.*" "verify st2 == 3.14159265*"
+gdb_test "info register st3" "st3 *1.44269.*\t.*" "verify st3 == 1.442695040*"
+gdb_test "info register st4" "st4 *3.32192.*\t.*" "verify st4 == 3.3219280948*"
+gdb_test "info register st5" "st5 *1\t.*"       "verify st5 == 1"
+
+gdb_test "reverse-stepi" "asm.*fldln2.*"          "push st0 == 0.301029*"
+gdb_test "info register st0" "st0 *0.30102.*\t.*" "verify st0 == 0.301029*"
+gdb_test "info register st1" "st1 *3.14159.*\t.*" "verify st1 == 3.14159265*"
+gdb_test "info register st2" "st2 *1.44269.*\t.*" "verify st2 == 1.442695040*"
+gdb_test "info register st3" "st3 *3.32192.*\t.*" "verify st3 == 3.3219280948*"
+gdb_test "info register st4" "st4 *1\t.*"         "verify st4 == 1"
+
+gdb_test "reverse-stepi" "asm.*fldlg2.*"          "push st0 == 3.14159265*"
+gdb_test "info register st0" "st0 *3.14159.*\t.*" "verify st0 == 3.14159265*"
+gdb_test "info register st1" "st1 *1.44269.*\t.*" "verify st1 == 1.442695040*"
+gdb_test "info register st2" "st2 *3.32192.*\t.*" "verify st2 == 3.3219280948*"
+gdb_test "info register st3" "st3 *1\t.*"       "verify st3 == 1"
+
+gdb_test "reverse-stepi" "asm.*fldpi.*"           "push st0 == 1.44269504088*"
+gdb_test "info register st0" "st0 *1.44269.*\t.*" "verify st0 == 1.442695040*"
+gdb_test "info register st1" "st1 *3.32192.*\t.*" "verify st1 == 3.3219280948*"
+gdb_test "info register st2" "st2 *1\t.*"         "verify st2 == 1"
+
+
+gdb_test "reverse-stepi" "asm.*fldl2e.*"          "push st0 == 3.3219280948*"
+gdb_test "info register st0" "st0 *3.32192.*\t.*" "verify st0 == 3.3219280948*"
+gdb_test "info register st1" "st1 *1\t.*"         "verify st1 == 1"
+
+gdb_test "reverse-stepi" "asm.*fldl2t.*"      "push st0 == 1"
+gdb_test "info register st0" "st0 *1\t.*"     "verify st0 == 1"                                               
+
+
+
+
+