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# Copyright 2003, 2004, 2007, 2008 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 .

#

# Please email any bugs, comments, and/or additions to this file to:

# bug-gdb@prep.ai.mit.edu

#

# Tests for Powerpc E500 register setting and fetching

if $tracelevel then {

    strace $tracelevel

}

#

# Test the use of registers, especially E500 registers, for Powerpc.

# This file uses e500-regs.c for input.

#

set prms_id 0

set bug_id 0

if ![istarget "powerpc-*eabispe"] then {

    verbose "Skipping e500 register tests."

    return

}

set testfile "e500-regs"

set binfile ${objdir}/${subdir}/${testfile}

set src1 ${srcdir}/${subdir}/${testfile}.c

if  { [gdb_compile ${src1} ${binfile} executable {debug nowarnings}] != "" } {

     untested e500-regs.exp

     return -1

}

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

#

# Run to `main' where we begin our tests.

#

if ![runto_main] then {

    gdb_suppress_tests

}

# set all the registers integer portions to 1

for {set i 0} {$i < 32} {incr i 1} {

        for {set j 0} {$j < 2} {incr j 1} {

           gdb_test "set \$ev$i.v2_int32\[$j\] = 1" "" "set reg ev$i.v4si.f\[$j\]"

        }

}

# Now execute some target code, so that GDB's register cache is flushed.

#gdb_test "next" "" ""

send_gdb "show endian\n"

gdb_expect {

    -re "(The target endianness is set automatically .currently )(big|little)( endian.*)$gdb_prompt $" {

        pass "endianness"

        set endianness $expect_out(2,string)

    }

    -re ".*$gdb_prompt $" {

        fail "couldn't get endianness"

    }

    timeout             { fail "(timeout) endianness" }

}

# And then read the E500 registers back, to see that

# a) the register write above worked, and

# b) the register read (below) also works.

if {$endianness == "big"} {

set vector_register ".uint64 = 0x100000001, v2_float = .0x0, 0x0., v2_int32 = .0x1, 0x1., v4_int16 = .0x0, 0x1, 0x0, 0x1., v8_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.."

} else {

set vector_register ".uint64 = 0x100000001, v2_float = .0x0, 0x0., v2_int32 = .0x1, 0x1., v4_int16 = .0x1, 0x0, 0x1, 0x0., v8_int8 = .0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0.."

}

for {set i 0} {$i < 32} {incr i 1} {

        gdb_test "info reg ev$i" "ev$i.*$vector_register" "info reg ev$i"

}

# Test wether the GPRs are updated accordingly. (GPRs are just the lower

# 32 bits of the EV registers.)

set general_register "0x1\[ \t\]+1"

for {set i 0} {$i < 32} {incr i 1} {

        gdb_test "info reg r$i" "r$i.*$general_register" "info reg r$i"

}

# Now redo the same tests, but using the print command.

# Note: in LE case, the char array is printed WITHOUT the last character.

# Gdb treats the terminating null char in the array like the terminating

# null char in a string and doesn't print it. This is not a failure, but

# the way gdb works.

if {$endianness == "big"} {

     set decimal_vector ".uint64 = 4294967297, v2_float = .1.*e-45, 1.*e-45., v2_int32 = .1, 1., v4_int16 = .0, 1, 0, 1., v8_int8 = ..000.000.000.001.000.000.000.001.."

} else {

     set decimal_vector ".uint64 = 4294967297, v2_float = .1.*e-45, 1.*e-45., v2_int32 = .1, 1., v4_int16 = .1, 0, 1, 0., v8_int8 = ..001.000.000.000.001.000.000.."

}

for {set i 0} {$i < 32} {incr i 1} {

        gdb_test "print \$ev$i" ".* = $decimal_vector" "print ev$i"

}

for {set i 0} {$i < 32} {incr i 1} {

         set pattern$i ".*ev$i.*"

         append pattern$i $vector_register

}

send_gdb "info vector\n"

gdb_expect_list "info vector" ".*$gdb_prompt $" {

[$pattern0]

[$pattern1]

[$pattern2]

[$pattern3]

[$pattern4]

[$pattern5]

[$pattern6]

[$pattern7]

[$pattern8]

[$pattern9]

[$pattern10]

[$pattern11]

[$pattern12]

[$pattern13]

[$pattern14]

[$pattern15]

[$pattern16]

[$pattern17]

[$pattern18]

[$pattern19]

[$pattern20]

[$pattern21]

[$pattern22]

[$pattern23]

[$pattern24]

[$pattern25]

[$pattern26]

[$pattern27]

[$pattern28]

[$pattern29]

[$pattern30]

[$pattern31]

}

# We must restart everything, because we have set important registers to

# some unusual values.

gdb_exit

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

if ![runto_main] then {

    gdb_suppress_tests

}

gdb_test "break vector_fun" \

 "Breakpoint 2 at.*e500-regs.c, line \[0-9\]+\\." \

 "Set breakpoint at vector_fun"

# Actually it is nuch easier to see these results printed in hex.

# gdb_test "set output-radix 16" \

#   "Output radix now set to decimal 16, hex 10, octal 20." \

#   "Set output radix to hex"

gdb_test "continue" \

  "Breakpoint 2, vector_fun .a=.-2, -2., b=.1, 1.*e500-regs.c.*ev_create_s32 .2, 2.;" \

  "continue to vector_fun"

# Do a next over the assignment to vector 'a'.

gdb_test "next" ".*b = \\(vector int\\) __ev_create_s32 \\(3, 3\\);" \

  "next (1)"

# Do a next over the assignment to vector 'b'.

gdb_test "next" "c = __ev_and \\(a, b\\);" \

  "next (2)"

# Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...'

gdb_test "print/x a" \

  ".*= .0x2, 0x2." \

  "print vector parameter a"

gdb_test "print/x b" \

  ".*= .0x3, 0x3." \

  "print vector parameter b"

# If we do an 'up' now, and print 'x' and 'y' we should see the values they

# have in main, not the values they have in vector_fun.

gdb_test "up" ".1.*main \\(\\) at.*e500-regs.c.*z = vector_fun \\(x, y\\);" \

  "up to main"

gdb_test "print x" \

  ".*= .-2, -2." \

  "print vector x"

gdb_test "print y" \

  ".*= .1, 1." \

  "print vector y"

# now go back to vector_func and do a finish, to see if we can print the return

# value correctly.

gdb_test "down" \

  ".0  vector_fun \\(a=.2, 2., b=.3, 3.\\) at.*e500-regs.c.*c = __ev_and \\(a, b\\);" \

  "down to vector_fun"

gdb_test "finish" \

  "Run till exit from .0  vector_fun \\(a=.2, 2., b=.3, 3.\\) at.*e500-regs.c.*main \\(\\) at.*e500-regs.c.*z = vector_fun \\(x, y\\);.*Value returned is.*= .2, 2." \

  "finish returned correct value"