# Copyright (C) 2002, 2003 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 2 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, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # # Please email any bugs, comments, and/or additions to this file to: # bug-gdb@prep.ai.mit.edu # # Tests for Powerpc AltiVec register setting and fetching if $tracelevel then { strace $tracelevel } # # Test the use of registers, especially AltiVec registers, for Powerpc. # This file uses altivec-regs.c for input. # set prms_id 0 set bug_id 0 if ![istarget "powerpc-*altivec"] then { verbose "Skipping altivec register tests." return } set testfile "altivec-regs" set binfile ${objdir}/${subdir}/${testfile} set srcfile ${testfile}.c if { [gdb_compile ${srcdir}/${subdir}/${srcfile} ${binfile} executable {debug additional_flags=-w}] != "" } { gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail." } 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} {$j < 4} {incr j 1} { gdb_test "set \$vr$i.v4_int32\[$j\] = 1" "" "set reg vr$i.v4si.f\[$j\]" } } gdb_test "set \$vscr = 1" "" "" gdb_test "set \$vrsave = 1" "" "" # 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 $" { fail "couldn't get endianness" } timeout { fail "(timeout) endianness" } } # And then read the AltiVec registers back, to see that # a) the register write above worked, and # b) the register read (below) also works. if {$endianness == "big"} { set vector_register ".uint128 = 0x00000001000000010000000100000001, v4_float = .0x0, 0x0, 0x0, 0x0., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1., v16_int8 = .0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1.." } else { set vector_register ".uint128 = 0x00000001000000010000000100000001, v4_float = .0x0, 0x0, 0x0, 0x0., v4_int32 = .0x1, 0x1, 0x1, 0x1., v8_int16 = .0x1, 0x0, 0x1, 0x0, 0x1, 0x0, 0x1, 0x0., v16_int8 = .0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0.." } for {set i 0} {$i < 32} {incr i 1} { gdb_test "info reg vr$i" "vr$i.*$vector_register" "info reg vr$i" } gdb_test "info reg vrsave" "vrsave.*0x1" "info reg vrsave" gdb_test "info reg vscr" "vscr.*0x1" "info reg vscr" # Now redo the same tests, but using the print command. # Note: in LE case, the char array is printed WITHOUT the last character. # Gdb treats the terminating null char in the array like the terminating # null char in a string and doesn't print it. This is not a failure, but # the way gdb works. if {$endianness == "big"} { set decimal_vector ".uint128 = 0x00000001000000010000000100000001, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .0, 1, 0, 1, 0, 1, 0, 1., v16_int8 = ..0.0.0.001.0.0.0.001.0.0.0.001.0.0.0.001.." } else { set decimal_vector ".uint128 = 0x00000001000000010000000100000001, v4_float = .1.*e-45, 1.*e-45, 1.*e-45, 1.*e-45., v4_int32 = .1, 1, 1, 1., v8_int16 = .1, 0, 1, 0, 1, 0, 1, 0., v16_int8 = ..001.0.0.0.001.0.0.0.001.0.0.0.001.0.0.." } for {set i 0} {$i < 32} {incr i 1} { gdb_test "print \$vr$i" ".* = $decimal_vector" "print vr$i" } gdb_test "print \$vrsave" ".* = 1" "print vrsave" gdb_test "print \$vscr" ".* = 1" "print vscr" for {set i 0} {$i < 32} {incr i 1} { set pattern$i ".*vr$i.*" append pattern$i $vector_register } send_gdb "info powerpc altivec\n" gdb_expect_list "info powerpc altivec" ".*$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] "\[ \t\n\r\]+vscr\[ \t\]+0x1" "\[ \t\n\r\]+vrsave\[ \t\]+0x1" } gdb_test "break vector_fun" \ "Breakpoint 2 at.*altivec-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=.0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe., b=.0x1010101, 0x1010101, 0x1010101, 0x1010101.*altivec-regs.c.*vec_splat_u8.2..;" \ "continue to vector_fun" # Do a next over the assignment to vector 'a'. gdb_test "next" ".*b = \\(\\(vector unsigned int\\) vec_splat_u8\\(3\\)\\);" \ "next (1)" # Do a next over the assignment to vector 'b'. gdb_test "next" "c = vec_add \\(a, b\\);" \ "next (2)" # Now 'a' should be '0x02020202...' and 'b' should be '0x03030303...' gdb_test "print/x a" \ ".*= .0x2020202, 0x2020202, 0x2020202, 0x2020202." \ "print vector parameter a" gdb_test "print/x b" \ ".*= .0x3030303, 0x3030303, 0x3030303, 0x3030303." \ "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.*altivec-regs.c.*z = vector_fun \\(x, y\\);" \ "up to main" gdb_test "print/x x" \ ".*= .0xfefefefe, 0xfefefefe, 0xfefefefe, 0xfefefefe." \ "print vector x" gdb_test "print/x y" \ ".*= .0x1010101, 0x1010101, 0x1010101, 0x1010101." \ "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=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*c = vec_add \\(a, b\\);" \ "down to vector_fun" gdb_test "finish" \ "Run till exit from .0 vector_fun \\(a=.0x2020202, 0x2020202, 0x2020202, 0x2020202., b=.0x3030303, 0x3030303, 0x3030303, 0x3030303.\\) at.*altivec-regs.c.*in main \\(\\) at.*altivec-regs.c.*z = vector_fun \\(x, y\\);.*Value returned is.*= .0x5050505, 0x5050505, 0x5050505, 0x5050505." \ "finish returned correct value"